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CONDUCTE DIN OTEL
Principii de conceptie si proiectare
Norma Petrom
OMV
H 1001
STEEL PIPELINES Design and Planning Principles
Petrom OMV Standard
H 1001
Elaborat/ Compiled:
Nechifor Daniela
Verificat/ Checked:
Decusara Felicia
Eng:. 2/15.09.2008
Aprobat/ Approved:
Neil Morgan
Divizia Rafinare Petrom OMV isi rezerva toate drepturile asupra
acestei documentatii si va da in judecata pe orice persoana
neautorizata sa o utilizeze sau sa o transmita la terti
PetromOMV Refining Division reserves all its rights to these
documents and will take legal action against anyone using them or
passing them on without authorization.
Aceasta norma a fost elaborata pentru rafinariile Petrom prin
prelucrarea si adaptarea Normei OMV H1001 revizie 01.04.2003 / This
norm was elaborated for Petrom refineries by the processing
and adapting of norm OMV H1001 revision 01.04.2003
Capitol Cuprins Nr. pag
Point Content Page
1.0 Generalitati 3 1.0 General 3 1.1 Domeniul de aplicare 3 1.1
Scope 3 1.2 Norme si reglementari 3 1.2 Standards and instructions
3 2.0 Principii de conceptie 3 2.0 Design principles 3 2.1 Diagrame
de evaluare a
conformitatii 5 2.1 Conformity assessment
diagrams 5
2.2 Categorii de conducte 5 2.2 Pipe classes 5 2.3 Imbinarea
conductelor de
categorii diferite 6 2.3 Pipe class step-up 6
2.4 Tronsoane de conducte 6 2.4 Pipeline parts 6 2.5 Materiale 7
2.5 Materials 7 2.6 Calculul 7 2.6 Calculation 7 2.7 Repararea si
adaptarea conductelor
11 2.7 Repair and adaptation of
existing pipelines 11
3.0 Principii de constructie 12 3.0 Design principles 12 3.1
Sisteme de intretinere 13 3.1 Maintenance systems 13 4.0 Documente
de executie 13 4.0 Implementation documentation 13 4.1 Documente de
executie necesare 13 4.1 Implementation documentation
to be compiled 13
5.0 Ordonarea conductelor 17 5.0 Pipeline configuration 17 5.1
Trasee 17 5.1 Pipe sections 17 5.2 Coturi 18 5.2 Bends 18 5.3
Inchideri de capat 18 5.3 Sealing ends 18 5.4 Flanse 18 5.4 Flanges
18 5.5 Organe de inchidere 19 5.5 Shut-off devices 19 5.6 Armaturi
de reglare 19 5.6 Control valves 19 5.7 Planificarea montarii
aparatelor
de masura si reglare 20 5.7 Planning of measurement and
control devices 20
5.8 Site de protectie 20 5.8 Protective filters 20 5.9 Discuri
de separare 20 5.9 Blanks 20 5.10 Organe de inchidere si
discuri
de separare la limita(terminalele) instalatiilor
20 5.10 Shut-off devices and blanks at the plant boundary
20
6.0 Elemente de ventilatie si golire 21 6.0 Venting and draining
provisions 21 7.0 Supape de siguranta si conducte
de purjare 21 7.0 Safety valves and blow -off-lines 21
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Pag / Page 2 Norma Petrom OMV H 1001 / Petrom OMV Standard H
1001
7.1 Supape de siguranta 21 7.1 Safety valves 21 7.2 Conducte de
purjare 22 7.2 Blow-off lines 22 7.3 Elemente de blocare
(inzavorare) 22 7.3 Interlocking systems 22 8.0 Conducte de
aspiratie la pompe si
conducte de presiune 23 8.0 Pump suction and pressure lines
23
9.0 Conducte de abur si condens 24 9.0 Steam and condensate
lines 24 10.0 Statii de agenti de exploatare 24 10.0 Equipment
stations 24 11.0 Sisteme de sustinere si de prindere
a tevilor 25 11.0 Pipe supports and pipe holders 25
12.0 Curatirea conductelor 26 12.0 Cleaning pipelines 26 13.0
Protectia la coroziune 26 13.0 Corrosion protection 26 14.0 Sisteme
insotitoare de incalzire 26 14.0 Heating 26 15.0 Izolatia la
caldura, la frig si fonica 26 15.0 Heat, cold and acoustic
insulation 26 15.1 Izolatia impotriva contactului 27 15.1
Protection against accidental contact 27 16.0 Reglementari speciale
pentru
instalatiile tehnologice 27 16.0 Special regulations for
process
plants 27
16.1 Apa bruta 27 16.1 Raw water 27 16.2 Apa de racire 27 16.2
Cooling water 27 16.3 Apa de alimentare cazane 27 16.3 Boiler feed
water 27 16.4 Conducte DEA, sisteme insotitoare
de incalzire 28 16.4 DEA lines 28
16.5 Conditii impuse pentru gaz cu continut de hidrogen
sulfurat
28 16.5 Sour gas transportation systems 28
16.6 Conducte de sulf 28 16.6 Sulfur pipelines 28 16.7 Conditii
impuse pentru hidrogen 28 16.7 Hydrogen requirements 28 16.8
Racorduri de aburire 28 16.8 Steaming-out connections 28 16.9 Azot
29 16.9 Nitrogen 29 16.10 Aer pentru instrumente 29 16.10
Instrument air 29 16.11 Gaz de incalzire 29 16.11 Heating gas 29
16.12 Sisteme de facla si de reziduuri
petroliere 29 16.12 Flare and slop systems 29
17.0 Conducte subterane 31 17.0 Underground lines 31 Anexa 1
Norme si reglementari 32 Anexa 1 Standards and instructions 32
Anexa 2 Punctele ce trebuie sa fie stabilite inainte de
incredintarea contractului
40 Annex 2 Summary of specifications to be agreed prior to award
of contract
40
Anexa 3 Diagrame de evaluare a conformitatii
41 Annex 3 Conformity assessmenta diagrams
41
Anexa 4 Metode de verificare a elasticitatii conductelor
45 Annex 4 Methods for elasticity testing of pipelines
45
Anexa 5 Schite cu tubari tipice 47 Annex 5 Sketches of typical
pipe installations 47 Anexa 6 Amplasarea ergonomica a organelor
de inchidere 60 Annex 6 Operator-friendly arrangement
of shut-off devices 60
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1.0 GENERALITATI 1.1 Domeniul de aplicare Prezenta norma se
aplica in cadrul Rafinariilor OMV Petrom pentru dimensionarea si
proiectarea conductelor. 1.2 Norme si reglementari In coroborare cu
prezenta norma se vor respecta dispozitiile, normele si directivele
valabile in Romania, in varianta lor aflata in vigoare, care sunt
mentionate la Anexa 1. Nu consideram enumerarea noastra ca fiind
una completa. Daca intre diferitele dispozitii, reglementari, norme
si directive apar diferente sau contradictii, iar aspectele
respective nu sunt in mod expres clarificate prin prezenta norma,
se va aplica reglementarea cu formularea cea mai restrictiva. In
cazul in care prevederile se exclud reciproc, atunci se va aplica
reglementarea prevazuta de legislatia romaneasca. Intra in
responsabilitatea executantului sa verifice daca prevederile
prezentei norme sunt adecvate scopului lucrarii respective.
Aplicarea normei nu il exonereaza pe executant de raspunderea pe
care o are in calitate de antreprenor profesionist si responsabil.
Daca executantul are obiectii cu privire la una dintre prevederile
stabilite, el il va informa imediat in scris pe angajator despre
acest lucru. 2.0 PRINCIPII DE CONCEPTIE Conditiile impuse
conductelor care intra sub incidenta echipamentelor sub presiune
sunt stabilite in conformitate cu Directiva UE 97/23/EG,
PED,transpusa in legislatia din Romania prin HG 584/2004,
Prescriptiile Tehnice ISCIR in vigoare si standardele SR EN
armonizate sub incidenta acestei directive. (Exceptie: conductele
sub o presiune mai mica decat presiunea atmosferica nu sunt incluse
in Directiva UE 97/23/EG). Conditiile impuse conductelor care,
conform dispozitiilor de la art.3 (1) paragraf 4, intra sub
incidenta altor reglementari sunt stabilite prin normele aferente
din domeniu (de ex.SR EN 1594-2002)/(PT ISCIR-
C6/2003,C10/1,2/2003) Conductele vor fi proiectate in conformitate
cu cerintele tehnologice si cu particularitatile locale ale
conditiilor de explotare. Pentru proiectarea conductelor,
constructorul va avea in vedere asigurarea unei durate de viata de
30
1.0 GENERAL 1.1 Scope This Standard is applicable for Petrom OMV
Refineries for the design of pipelines.
1.2 Standards and instructions In conjunction with this
Standard, the respective specifications, standards and directives
legally applicable in Romania and stated in Annex 1 should be taken
into account in their currently valid form. This listing is not
claimed to be complete. In the event of deviations or conflicts
arising between the various specifications, standards and
directives and there is no firm definition by this Standard, then
the strictest formulation is to be applied in each case. Where they
are mutually exclusive, then the Romanian statutory regulations
will apply. The Contractor will be responsible for checking the
appropriateness of this standard for the intended purpose. The
application does not relieve the Contractor of his responsibility
as specialist and independent entrepreneur.
If the Contractor has reservations concerning an agreed
definition, then he must notify the Client of this in writing
without delay.
2.0 DESIGN PRINCIPLES Specifications for pipelines for which the
terms of the EU Directive 97/23/EG PED apply, transposed to
Romanian legislation through HG584/2004, ISCIR Technical
prescriptions in force and SR EN harmonized standards under the
incidence of these directives. (Exception: pipelines for pressures
under atmospheric pressure are not covered by the EU Directive
97/23/EG).
The specifications on pipelines for which other legal regulation
apply in accordance with dispositions of art. 3(1) paragraph 4, are
laid out in the relevant Standards (e.g. SR EN 1594-2002)/(PT
ISCIR-C6/2003, C10/1,2/2003). The pipelines are to be constructed
in accordance with process-related requirements and the local
conditions. In the construction of the pipelines the manufacturer
has to apply technical and
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Pag / Page 4 Norma Petrom OMV H 1001 / Petrom OMV Standard H
1001
de ani la parametri tehnico-economici stabiliti. In conditii
corespunzatoare de functionare trebuie sa se asigure posibilitatea
unei exploatari continue a conductelor de min.5 ani. In proiectarea
conductelor dupa criteriile de rezistenta la oboseala trebuie sa se
aiba in atentie un numar de 200.000 ore de functionare In cazul in
care, din motive tehnologice, materialele alese nu asigura o
rezistenta la oboseala pentru 200.000 de ore de functionare,
solutionarea va fi convenita cu responsabilul de proiect Petrom
OMV. In principiu,sistemele de transport produs din instalatiile
tehnologice vor fi executate conform ANSI, sistemele de agenti de
exploatare cu PN pana la 40 vor fi executate conform DIN iar cu PN
peste aceasta valoare vor fi executate conform ANSI. Exceptiile vor
fi convenite cu responsabilul de proiect Petrom OMV- Pentru
conducte se vor folosi armaturi cu flanse si flanse asamblate prin
sudura, pentru conductele de inalta presiune armaturi cu capete
sudate si, pe cat posibil, cat mai putine flanse presudate. Alte
variante de executie pentru conducte de apa bruta, apa potabila si
apa pentru stingere incendii (hidranti) sau pentru aer
(instrumental) pot fi gasite in categoriile de conducte prevazute
de Norma OMV H 3101.
Diagrama de flux tehnologic furnizeaza informatii referitoare la
mediul transportat, debitul de masa, presiunile maxime de regim
admise si temperaturile maxime de regim admise (parametri de lucru
si de proiectare).
Pentru mediul transportat se vor stabili valorile caracteristice
conform Normei Petrom OMV 303.
Diametrul nominal va fi ales in functie de debitul de masa si de
viteza de curgere dorita, tinand cont si de costurile de investitie
si de consumul de energie (vezi Norma Petrom OMV H 1101). In
delimitarea circuitelor (zonelor) pentru verificarile de presiune
in sistem vor fi luate in calcul presiunile de control ale
aparatelor ce vor fi supuse testelor sub presiune (aparate vechi si
noi) si presiunile de control necesare dar si posibile ale
conductelor si aparatelor. Aceasta inseamna ca vor putea fi facute
probe in sistem numai pentru aparatele sub presiune (conducte si
aparate ) care au aceleasi presiuni de proba. Sistemele cu presiuni
de proba diferite vor fi
economic criteria to take into account a service life of 30
years. With the use of the pipelines as intended, uninterrupted
operation of at least five years must be possible. An endurance
strength for 200,000 operational hours is to be applied for the
tensile strength design of pipelines. In the event of no values for
an endurance strength of 200,000 hours being available for the
chosen materials for process-related reasons, the subsequent
procedure is to be agreed with the Petrom OMV project manager. In
principle, product-handling systems in processing plants are to be
constructed in accordance with ANSI and the operating supplies
systems up to PN 40 in accordance with DIN, above this in
accordance with ANSI. Exceptions are to be agreed with the Petrom
OMV project manager.
In principle, flange fittings and welding neck flanges are to be
used for pipelines, and fittings with weld-on ends and as few
welding neck flanges as possible for high-pressure pipelines. Other
designs for raw, drinking and fire-fighting water as well as
instrument air in-site are to be found in the pipe classes in OMV
Standard H 3101.
The specifications concerning medium, mass flow rate, highest
permissible operational pressures and the highest permissible
operation temperatures (working and design parameters) can be found
in the process flow diagram.
A medium coefficient is to be determined for the medium in
accordance with Petrom OMV Standard 303. The nominal width is to be
selected in accordance with the arising mass flow rate and the
desired flow speed, taking into account the investment costs and
the ongoing energy consumption (see Petrom OMV Standard H 1101).
With the arrangement of the pressure test circuits (collective
pressure tests) to be determined during the planning phase, the
test pressures of equipment that is also to be pressurized (new and
existing equipment) and the required as well as possible test
pressures of the pipelines and equipment are to be taken into
account. This means that the pressure test circuits can only
consist of pressure devices (equipment and pipelines) with the same
test pressures. Pipe systems with different test pressures are to
be
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separate (blinde sau capace sudate suplimentar). Categoriile de
conducte vor fi alese din clasificarea OMV; alegerea altor
categorii de conducte trebuie evitata respectiv, in caz ca este
necesar, categoria respectiva va fi convenita cu responsabilul de
proiect OMV Petrom si apoi clasificarea va fi intocmita in
intregime de catre EXECUTANT. Pentru repararea si adaptarea
conductelor existente se aplica punctul 2.7. 2.1 Diagrame de
evaluare a conformitatii Pentru clasificarea conductelor se vor
aplica diagramele de evaluare a conformitatii 6, 7, 8 si 9 din PED
transpuse in diagramele din PT ISCIR C6,C10/1-2003 Ca execptie de
la Anexa II punct 1, la diferite categorii se vor aplica
obligatoriu urmatoarele metode de evaluare a conformitatii, conform
HG 584/2004:
- Diagrama 6 (gaze Grupa 1) si Diagrama 8 (Fluide Grupa 1):
Pentru domeniul sub incidenta art.8 si pentru Categoriile I si
II: Modul A1 Pentru Categoria III: combinatia de module B1 + F -
Diagrama 7 (gaze Grupa 2) si Diagrama 9 (Fluide Grupa 2): Pentru
domeniul sub incidenta art.8 si Pentru Categoria I: Modul A; peste
PS = 40 bar, Modul A1 Pentru Categoria II: Modul A1 Pentru
Categoria III:combinatia de module B1+ F
Observatie: Diagramele 6 9 vezi Anexa 3 fig. 1 4.
Pentru domeniul abordat la art.8 nu trebuie sa se aplice
marcajul CE. 2.2 Categorii de conducte Pentru cele mai importante
medii de transport, domenii de presiune si temperatura au fost
elaborate clasificari ale conductelor in categoriile sintetizate in
Norma Petrom OMV H 3101, care sunt verificate de catre TV Aceste
categorii cuprind domeniul reglementat de DIN si ANSI. Alegerea
categoriilor de conducte este in sarcina responsabilului de proiect
si se face dupa criterii economice. Pentru mediile, domeniile de
presiune si temperatura nespecificate in Norma Petrom OMV H 3101,
se vor intocmi clasificari de conducte pentru fiecare proiect in
parte, care vor fi convenite cu responsabilul de proiect al Petrom
OMV si cu autoritatea de standardizare. Clasificarea in categorii
noi de conducte va fi supusa unei verificari preliminare de catre
institutia de control acreditata.
designed as separable (blanks or additional welded-on caps).
Selection of the pipe classes to be used has to take place with
reference to the Petrom OMV pipe classes; new pipe classes are to
be avoided or, where necessary, to be agreed with the Petrom OMV
project manager and are then to be manufactured completely by the
CONTRACTOR. Point 2.7 shall apply for repair or adaptation of
existing pipelines.
2.1 Conformity assessment diagrams The conformity assessment
diagrams 6, 7, 8 and 9 of the PED transposed from PT ISCIR C6,
C10/1-2003 diagrams. In departure from the PED Annex II Point 1,
the following conformity assessment processes are to be applied
mandatorily in the various categories, acc. to HG 584/2004:
- Diagram 6 (Group 1 gases) and Diagram 8 (Group 1 liquids):
For the range as stated in Section 8 and for categories I and
II: Module A1 For category III: Module combination B1 + F - Diagram
7 (Group 2 gases) and Diagram 9 (Group 2 liquids): For the range as
stated in Section 8 and for category I: Module A, over PS = 40 bar
Module A1 For category II: Module A1 For category III: Module
combination B1 + F Note: For diagrams 6 to 9, see Annex 3, figures
1 to 4. No CE marking is to be used for the range under Section 8.
2.2 Pipe classes For the most important transport medium, pressue
and temperature ranges, pipe classes were compiled, summarized in
Petrom OMV Standard H 3101 and checked by the initial testing
laboratory of TV.These pipe classes include the DIN and ANSI range.
The choice of pipe classes is the responsibility of the project
supervisor and is to be carried out according to economic criteria.
For medium, pressure and temperature ranges that are not stated in
Petrom OMV Standard H 3101, the pipe classes for the project in
question are to be established and agreed with the Petrom OMV
project manager and the standardization institute.
Newly-established pipe classes are to subjected to a preliminary
examination by the responsible initial testing authority.
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1001
Categoriile de conducte contin urmatoarele date:
- mediul transportat si valorile caracteristice ale
acestuia;
- presiunea nominala; - clasificarea domeniilor de temper. /
presiune; - natura materialului; - norma de aplicare; - tipul de
racordare; - diametrele nominale si domeniul de
exploatare pentru tronsoanele de conducte; - adaosurile de
coroziune.
2.3 Imbinarea conductelor de categorii diferite La imbinarea
conductelor (ramificatii, racorduri secundare) cu trepte diferite
de presiune sau din material diferit, conducta cu treapta de
presiune mai mica sau cu calitate inferioara de material trebuie sa
fie conectata printr-un racord conform treptei superioare de
presiune sau de calitate a materialului. Reducerea treptei de
presiune se face dupa un organ de inchidere. Reducerea calitatii
materialului, ca urmare a unor temperaturi mai mici la aceeasi
treapta de presiune, nu necesita existenta unui organ de inchidere.
Totusi, va trebui sa fie prevazuta o pereche de flanse in cazul in
care materialele nu se pot suda. Toate trecerile intre trepte
diferite de presiune trebuie sa fie reprezentate in diagrama
P&I si in desenele de conducte. Acolo unde stuturile la
rezervoare ( supape de siguranta) au o treapta de presiune mai mare
decat conducta racordata, este necesar ca armatura respectiv flansa
de racordare a conductei la rezervor (supapa de siguranta) sa aiba
aceeasi treapta de siguranta ca si stutul rezervorului (supapa de
siguranta). 2.4 Tronsoane de conducte In categoriile de conducte (
Norma H 3101) sunt mentionate tronsoanele de conducte, specificate
in descrierile tehnice (Norma OMV H 3155). Aceste tronsoane au fost
dimensionate conform punctului 2.5. din prezenta norma. Tronsoanele
care nu sunt mentionate in Norma OMV H 3101, respectiv care nu sunt
mentionate in clasificarile intocmite pentru fiecare proiect in
parte, vor fi specificate de catre executant si convenite cu
responsabilul de proiect Petrom OMV si cu autoritatea de
standardizare. Daca trebuie sa se sudeze tronsoane cu grosimi
diferite ale peretelui, se va proceda conform reglementarilor din
Norma Petrom OMV H 3305 (vezi imbinarea conductelor cu grosime
diferita a peretelui).
The pipe classes include the following specifications: - medium
and medium index; - nominal pressure; - pressure/temperature
classification; - material; - standard; - type of connection; -
nominal widths and field of application of the pipeline parts; -
corrosion supplements. 2.3 Pipe class upgrade In the case of
connection of pipelines (junctions, extension lines) with different
pressure stages or differing materials, the adaptor for the line
with the lower pressure stage or material quality must be designed
for the higher pressure stage or material quality. The reduction of
the pressure stage is to be implemented after a shut-off device.
The reduction of the material quality due to lower temperatures
with unchanged pressure stage does not require a shut-off device.
However, a flange pair should be provided if the differing
materials cannot be welded. All pressure stage transitions must be
evident from the piping & instrumentation flow diagram and the
pipeline drawings. Where tank necks (safety valves) have a higher
pressure stage than the connected pipeline, the fitting or the pipe
connection flange on the tank (safety valve) must have the same
pressure stage as the tank neck (safety valve). 2.4 Pipeline parts
In the pipe classes (Standard H 3101) the pipeline parts are listed
and specified in the parts descriptions (OMV Standard H 3155).
These pipeline parts were calculated in accordance with Point 2.5
of this Standard. Pipeline parts which are not stated in OMV
Standard H 3101 or which are not stated in the pipe classes
compiled for the project in question must be specified by the
Contractor and agreed with the Petrom OMV project manager and the
standardization authority.
Where pipeline parts of differing wall thicknesses have to be
welded, this is to be carried out in accordance with the
requirements laid out in Petrom OMV Standard H 3305 (see Wall
Thickness Upgrading).
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Daca nu este posibila o sanfrenare, va trebui sa fie prevazuta o
piesa intermediara respectiv o reductie. In principiu, pentru
conducte se vor folosi armaturi cu flanse si flanse presudate,
pentru conductele de inalta presiune (treapta de presiune >
Categoria 1500) se vor folosi armaturi cu capete sudate si, pe cat
posibil, cat mai putine flanse presudate. Alte variante de executie
pentru conducte de apa bruta, apa potabila si apa pentru stingere
incendii (hidranti) sau pentru aer pentru instrumente pot fi gasite
in categoriile de conducte prevazute de Norma OMV H 3101. 2.5
Materiale Daca este necesar sa se utilizeze alte materiale decat
cele stabilite in categoria de conducte, se va conveni cu
responsabilul de proiect asupra obtinerii unui aviz de certificare
pentru respectivele materiale prin intermediul institutiei
acreditate de control. 2.6 Calculul In continuare sunt indicate
bazele de calcul de rezistenta la suprapresiuni interne. In plus,
se vor lua in considerare factorii interni si externi care
actioneaza asupra conductelor (coroziune, eroziune, eforturi de
intindere, oscilatii, lovituri de berbec etc). 2.6.1. Tevi Calculul
conform reglementarilor cunoscute: - conducte conform HG 584/2004:
Categorii de conducte DIN AD 2000 Fisa tehnica B1 Categorii de
conducte ANSI ASME B 31.3 - conducte care nu intra sub incidenta HG
584/2004 de ex. SR EN 1594-2002 respectiv AD 2000 Fisa tehnica B1
2.6.2 Coturi - conducte conform HG 584/2004: Categorii de conducte
DIN TRD 301 Anexa 2 Categorii de conducte ANSI ASME B 31.3 La
coturile standardizate mentionate in DIN 2605-2 respectiv ANSI B
16.9 nu mai este nevoie de un calcul daca grosimea standard a
peretelui de racordare a cotului nu este mai mica decat grosimea
stabilita prin calcul a peretelui unei tevi drepte, din acelasi
material. - conducte care nu intra sub incidenta HG 584/2004 de ex.
SR EN 1594:TRD 301 Anexa 2
Where beveling is not possible, an adaptor piece or junction
must be planned-in. In principle, flange fittings and welding neck
flanges are to be used for pipelines, and fittings with weld-on
ends and as few welding neck flanges as possible for high-pressure
pipelines (pressure stage > Class 1500). Other designs for raw,
drinking and fire-fighting water as well as instrument air in-site
are to be found in the pipe classes in OMV Standard H 3101. 2.5
Materials Where materials other than those stipulated in the pipe
classes are to be used, in agreement with the project manager a
certification of the material is to be effected by the initial
testing laboratory. 2.6 Calculation The following are the
fundamental principles for the calculation for provision against
overpressure. In addition, the internal and external influences
that act on the pipeline are to be taken into consideration
(corrosion, erosion, expansion forces, vibrations, pressure shocks,
etc.). 2.6.1 Pipes Calculation in accordance with recognized
regulations: - pipelines in accordance with HG 584/2004: DIN pipe
classes:AD 2000 Code of Practice B 1 ANSI pipe classes:ASME B 31.3
- not in the HG584/2004 range: e.g.: SR EN 1594-2002, or AD 2000
Code of Practice B 1 2.6.2 Bends - pipelines in accordance with HG
584/2004: Act:DIN pipe classes:TRD 301 Annex 2 ANSI pipe
classes:ANSI B 31.3 With standardized bends in accordance with DIN
2605-2 or ANSI B 16.9, calculation is unnecessary when the
standardized connection wall thickness of the bend is not less than
the calculated required wall thickness of a straight pipe of the
same material. - not in the HG 584/2004 range:e.g.: SR EN 1594
orTRD 301 Annex 2.
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1001
2.6.3 Teuri - conducte conform HG 584/2004:Categorii de conducte
DIN AD 2000 Fisa tehnica B9 Categorii de conducte ANSI: ASME B 31.3
La teurile standardizate mentionate in DIN 2615-2 respectiv ANSI B
16.9 nu mai este nevoie de un calcul daca grosimea standard a
peretelui de racordare a teului nu este mai mica decat grosimea
stabilita prin calcul a peretelui unei tevi drepte, din acelasi
material. - conducte care nu intra sub incidenta HG 584/2004 de ex.
SR EN 1594 AD 2000 Fisa tehnica B9 2.6.4 Reductii - Conducte
conform HG 584/2004: Categorii de conducte DIN AD 2000 Fisa tehnica
B2 Categorii de conducte ANSI ASME B 31.3 La reductiile
standardizate mentionate in DIN 2616-2 respectiv ANSI B 16.9 nu mai
este nevoie de un calcul daca grosimea standard a peretelui de
racordare a reductiei nu este mai mica decat grosimea stabilita
prin calcul a peretelui unei tevi drepte, din acelasi material. -
conducte care nu intra sub incidenta HG 584/2004 de ex. SR EN 1594
AD 2000 Fisa tehnica B2 2.6.5 Calote - Conducte conform HG
584/2004: Categorii de conducte DIN AD 2000 Fisa tehnica B3
Categorii de conducte ANSI ASME B 31.3 La calotele standardizate
mentionate in DIN 2617 respectiv ANSI B 16.9 nu mai este nevoie de
un calcul daca grosimea standard a peretelui de racordare a calotei
nu este mai mica decat grosimea stabilita prin calcul a peretelui
unei tevi drepte, din acelasi material. -Conducte care nu intra sub
incidenta HG 584/2004 ex.SR EN 1594 AD 2000 Fisa tehnica B3 2.6.6
Flanse Cand se utilizeaza flanse standardizate nu mai este necesar
un calcul daca sunt respectate domeniile de presiune si temperatura
specificate in DIN 2401
2.6.3 T-pieces - pipelines in accordance with HG 584/2004: DIN
pipe classes:AD 2000 Code of Practice B 9 ANSI pipe classes:ASME B
31.3 With standardized bends in accordance with DIN 2615-2 or ANSI
B 16.9 calculation is unnecessary when the standardized connection
wall thickness of the bend is not less than the calculated required
wall thickness of a straight pipe of the same material. - not in
the HG 584/2004 range:e.g.: SR EN 1594, or AD 2000 Code of Practice
B 9.
2.6.4 Reductions
- pipelines in accordance with HG 584/2004
DIN pipe classes:AD 2000 Code of Practice B 2 ANSI pipe classes:
ANSI B 31.3
With standardized bends in accordance with DIN 2616-2 or ANSI B
16.9, calculation is unnecessary when the standardized connection
wall thickness of the bend is not less than the calculated required
wall thickness of a straight pipe of the same material. - not in
the HG 584/2004 range:e.g.: SR EN 1594, or AD 2000 Code of Practice
B 2.
2.6.5 Caps - Pipelines in accordance with HG 584/2004: DIN pipe
classes:AD 2000 Code of Practice B 3 ANSI pipe classes:ASME B 31.3
With standardized bends in accordance with DIN 2617 or ANSI B 16.9,
calculation is unnecessary when the standardized connection wall
thickness of the bend is not less than the calculated required wall
thickness of a straight pipe of the same material. - Not in the HG
584/2004 range:e.g.: SR EN 1594, or AD 2000 Code of Practice B
3.
2.6.6 Flanges When using standardized pipeline flanges, a
calculation is not necessary when the pressure/temperature grading
is in compliance
-
(Norma succesiva SR EN 1092-1) respectiv in ANSI B 16.5.
Grosimea peretelui in zona racordului trebuie sa fie cel putin
egala cu cea a peretelui tevii. La categoriile de conducte DIN
Flansele cu diametre nominale pentru care nu se aplica clasificarea
de temperatura si presiune din DIN 2401 (Norma succesiva SR EN
1092-1) (tipic pentru DN > 400) respectiv flansele
nestandardizate se vor calcula conform DIN V 2505 (Norma succesiva
SR EN 1591-1) (flansele oarbe nestandardizate se vor calcula
conform AD 2000 Fisa tehnica B 5). Pentru dimensiunile mai mari
etajarea presiune- temperatura a fost realizata conform DIN 2401 si
introdusa in clasele de conducte OMV. La categoriile de conducte
ANSI: pentru flansele nestandardizate, calculul se va efectua
conform ASME (Boiler and Pressure Vessel Code Section VIII Div.1).
2.6.7 Suruburi Pentru suruburile de la imbinarile standardizate cu
flansa nu mai este necesar un calcul. Pentru suruburile din
imbinarile nestandardizate, calculul se va face conform AD 2000
Fisa tehnica B 7 sau SR EN 1591 respectiv ASME (Boiler and Pressure
Vessel Code Section VIII Div.1) La imbinarile cu flansa intens
solicitate se va analiza daca este sau va fi necesara utilizarea de
prezoane. 2.6.8 Garnituri Pe langa momentul de strangere al
imbinarii cu flansa se va lua in calcul presarea permisa pe
suprafata garniturii. Pot fi utilizate numai garniturile
specificate in urmatorul tabel:
with DIN 2401 (successor standard SR EN 1092-1) or ANSI B 16.5.
The flange neck wall thickness must correspond at least to the
determined pipe wall thickness. DIN pipe classes: Flanges with
nominal widths for which the pressure/temperature classification in
accordance with DIN 2401 (successor standard SR EN 1092-1) do not
apply (typically for DN > 400) or non-standard flanges, are to
be calculated in accordance with DIN V 2505 (successor standard SR
EN 1591-1) (non-standard blank flanges in accordance with AD 2000
Code of Practice B 5). Where considered necessary, in the OMV pipe
classes the pressure/temperature classification for the larger
nominal widths was reduced compared with DIN 2401. ANSI pipe
classes: Non-standard flanges are to be calculated in accordance
with ASME (Boiler and Pressure Vessel Code Section VIII, Div. 1).
2.6.7 Bolts No calculation is required for bolts of standard
pipeline flange connections. Bolts for non-standard flange
connections are to be calculated in accordance with AD 2000 Code of
Practice B 7 or SR EN 1591, ASME respectively ( Boiler and Pressure
Vessel Code Section VIII, Div. I. With highly-stressed flange
connections, it should be ascertained as to whether the use of
stress bolts is advisable or necessary. 2.6.8 Gaskets The
permissible surface pressure of the gasket is to be taken into
account in relation to the tightening torque of the flange
connection. Only gaskets that comply with the following table may
be used:
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Pag / Page 10 Norma Petrom OMV H 1001 / Petrom OMV Standard H
1001
2.6.9 Organe de inchidere si armaturi
- in conductele care intra sub incidenta HG 584/2004: conceptie,
fabricatie si control conform Normelor Petrom OMV H 1001, H 3002, H
2002, H 2003, H 2004, H 2005, H 4202, H 4302 si AD 2000 Fisa
tehnica A 4, EN ISO 4126 sau TRD 110 - in conductele care nu intra
sub incidenta HG 584/2004: conceptie, fabricatie si control conform
Normelor Petrom OMV si EN 1594 /PT-ISCIR C10/2/2003
2.6.10 Discuri de separare Calcul conform AD 2000 Fisa tehnica B
5 respectiv ASME B 31.3/ PT-ISCIR C10/2/23 2.6.11 Dilatatie,
elasticitate Pentru conducte se va prezenta atestatul pentru
tensiunile din intregul sistem de conducte (analiza
tensiunilor).
Aceste atestate pot fi realizate dupa urmatoarele metode:
- O = Verificare fara atestare, pe baza exeperientelor in
domeniu - V = verificare dupa metode simplificate (de ex.cu
diagrame) - C = verificare prin calcule in sistem informatizat
Alegerea metodei de verificare se face astfel:
Domeniu de utilizare Tip de garnitura Loc de utilizare
Domeniu
general Domeniu -
H2
450C Class 600
PN 40
425C Class 600
Garnitura spirala grafit, in cazuri speciale garnitura RTJ
> 450C
Class 900
> 425C
Class 900 Garnitura RTJ
Class 1500
Class 2500
Class 1500
Class 2500
Capete sudate resp.daca sunt necesare flanse: garnituri RTJ
Conducte
Domeniu de joasa temperatura
Garnitura spirala cu PTFE
Proba presiune hidraulica
Limitare automata 70C
Garnitura fibra aramid, de ex. Klinger C 4400 Dupa proba de
presiune, garnitura va fi inlocuita cu cea specificata.
2.6.9 Shut-off devices and fittings
- Pipelines in accordance with HG 584/2004 Design, manufacture
and testing in accordance with Petrom OMV Standards H 1001, H 3002,
H 2002, H 2003, H 2004, H 2005, H 4202 and H 4302 and AD 2000 Code
of Practice A4, EN ISO 4126 or TRD 110. -Not in HG584/2004 range:
design, manufacture and testing in accordance with Petrom OMV
Standards and EN 1594/PT-ISCIR C10/2/2003. 2.6.10 Blanking plates
Calculation in accordance with AD 2000 Code of Practice B 5 or ASME
B31.3/ PT-ISCIR C10/2/2-3. 2.6.11 Expansion, elasticity For the
pipelines, attestation of the tensions in the complete pipeline
system (tension analysis) must be provided.
These analyses can be carried out by the following methods: - O
= Testing without attestation on the basis of professional
experience; - V = Testing in accordance with simplified methods
(e.g. with diagrams); - C = Testing with computer-aided
calculation. The selection of the test method is carried our
for:
Application range Type of gasket Application point General
use H2 application
450C CLASS 600
PN 40
425C CLASS 600
Spiral graphite gasket, in special cases an RTJ gasket
> 450C
CLASS 900
> 425C
CLASS 900
RTJ gasket
CLASS 1500
CLASS 2500
CLASS 1500
CLASS 2500
Welded-on, or when flanges are necessary: RTJ gasket
Pipelines
Low temperature range
Spiral gasket with PTFE
Water pressure test
Self-restriction 70C Aramid fiber gasket, e.g. Klinger C 4400
After pressure test, gasket is replaced by specified gasket.
-
- conducte speciale, acestea sunt conductele pentru fluide din
Grupa 1 si conductele de la utilaje si racitoare de aer, conform
Anexa 4 fig.1
- conducte generale, acestea sunt toate celelalte conducte,
conform Anexa 4 fig.2
Calculele de dilatatie vor fi efectuate in baza unui domeniu de
temperatura externa de la 20C pana + 38C (vezi Norma Petrom OMV
206) respectiv pe baza temperaturii de regim minime si maxime
admise. La trasarea conductelor se va avea in vedere sa nu se
depaseasca fortele si momentele maxime admise pentru aparate si
utilaje. Se vor solicita constructorului utilajului date
referitoare la fortele de forfecare maxime admise si la momentele
racordurilor masinilor. Traseul conductelor va fi astfel ales incat
dilatatia aparuta sa poata fi preluata fara tensiuni nepermise.
Acolo unde este necesar, vor fi prevazute coturi suplimentare de
dilatatie. Acestea vor fi amplasate pe cat posibil in pozitie
orizontala. La estacadele de conducte si traverse se va avea grija
sa nu se impiedice pozarea ulterioara a altor conducte.
Compensatoarele vor fi prevazute numai acolo unde, din motive de
spatiu sau de pierderi de presiune, nu este posibila montarea de
coturi de dilatatie. O pretensionare a conductei in stare rece va
fi prevazuta numai daca trebuie sa fie impiedicate deplasari
(dislocari) mai mari ale conductelor in stare calda sau daca
trebuie sa fie diminuate fortele si momentele aparute in punctele
de sprijin respectiv la stuturile aparatelor si masinilor. Valorile
de pretensionare utilizate vor fi mentionate in desenele aferente.
2.7 Pentru repararea respectiv adaptarea conductelor existente se
aplica urmatoarele: Prin repararea respectiv adaptarea conductei se
intelege modificarile aduse acestora fara a modifica destinatia
instalatiei respective, mediul de transport, diametrul nominal sau
sistemul de asigurare. Pentru indeplinirea obligatiei de efectuare
a receptiei se vor folosi diagramele de evaluare a conformitatii
asemanatoare celor de la o punere in functiune a unei conducte noi
(Anexa 3). Alegerea diagramelor corespunzatoare de evaluare a
conformitatii se face in functie de mediul transportat, presiunea
proiectata si diametrul nominal. Receptia lucararilor de reparatie
la o conducta pana
- Special pipelines, namely pipelines for Group 1 fluids and
pipelines to machines and air coolers, in accordance with Annex 4
Figure 1; - General pipelines, namely all other pipelines in
accordance with Annex 4 Figure 2. The expansion calculations are to
be based on an ambient temperature of 20C to +38C (see Petrom OMV
Standard 206) or the lowest permissible and highest permissible
operational temperatures. With the pipeline layout, care should be
taken that the permissible forces and torques on equipment and
machines are not exceeded. Data on highest-permissible shear forces
and torques on machine supports is to be collected from the
manufacturers of the machines. The course of the pipeline is to be
chosen so that any expansion occurring can be assimilated without
becoming impermissible. Where necessary, additional expansion bends
are to be provided. Where possible, these expansion bends should
only be planned in horizontal positions. Care should be taken that
subsequent pipe relocation within pipe bridges and sleepers will
not be impeded.
Compensators are only to be provided in those places where the
use of expansion bends is not possible due to lack of space or
pressure loss. Prestressing of the pipeline should only be carried
out when major displacements of it under warm condition must be
prevented or to reduce the occurrence forces and torques in the
fixed points of the equipment or machine supports. The prestressing
applied is to be stated in the respective drawings. 2.7 The
following will apply for the repair or adaptation of existing
pipelines: Repairs or adaptations are deemed to be modifications to
pipelines whereby the purpose of the plant, the medium, the nominal
diameter or the securing system. For the determination of the
obligation to take delivery, the conformity assessment diagrams
(Annex 3) are to apply in the same way as with a new release. The
selection of the respective conformity assessment diagrams is
carried out according to medium, design pressure and nominal
diameter. Up to Category I at the highest, the acceptance
-
Pag / Page 12 Norma Petrom OMV H 1001 / Petrom OMV Standard H
1001
la max.categoria 1 se face de catre constructor (uzina de
reparatii). In afara de acesta, va fi implicat in toate fazele
receptiei reprezentantul institutiei de control acreditata pentru
verificarea aparatelor sub presiune. Acesta analizeaza daca este
necesara o noua verificare preliminara. La categoriile de conducte
se va verifica daca este necesara o refacere a calculelor de
rezistenta la oboseala (stres). Categoriile de conducte vechi
(clasificarea veche) vor fi utilizate numai daca nu s-au elaborat
categorii noi (o noua clasificare). Pentru incercarea de presiune
hidraulica se va utiliza aceeasi presiune de control ca la
verificarea initiala. Daca receptia se face prin constructor, acest
lucru va fi confirmat printr-o declaratie de conformitate cu
prevederile HG 584/2004/prevederile legale in vigoare. Receptia
efectuata prin institutia de control acreditata va fi confirmata
printr-un certificat de conformitate a conductelor. Pentru
intocmirea documentelor de executie si pentru documentatia pentru
lucrarile de reaparare executate se vor aplica aceleasi
reglementari valabile pentru constructiile noi. 3.0 PRINCIPII DE
CONSTRUCTIE
Toate datele de inaltime din cadrul instalatiei se raporteaza la
nivelul acesteia (vezi Norma Petrom OMV 201). In proiectare se va
tine cont de faptul ca suprafetele trebuie sa fie executate cu
panta descendendenta si, prin urmare, vor prezenta diferente de
nivel. Distanta dintre suprafata si marginea inferioara a unei
conducte va fi astfel aleasa incat sa se asigure suficient spatiu
pentru elementele de golire, dispozitivele de evacuare a
condensului, demontarea suportilor ventilelor de reglare etc.
Fundatiile necesare pentru constructiile de sustinere a conductelor
vor fi separat analizate in functie de incarcari si se vor stabili
inaltimile aferente. Fortele aparute in conducte trebuie sa poata
fi preluate in siguranta de structurile de sustinere, schele,
poduri de conducte etc.
La estacadele de conducte din interiorul instalatiei, care merg
in afara instalatiei (offsites), inaltimea etajelor va fi corelata
cu cea a estacadelor de conducte din amplasamentul exterior.
Diferenta de inaltime a etajelor podurilor estacadelor din
instalatie si a celor din amplasamentele exterioare trebuie sa fie
de minim 1 m si depinde si de modul de executie a zonei de trecere
instalatie
of the repair to a pipeline can be carried out by the
manufacturer (repair service). For repairs in excess of this the
initial testing laboratory for pressure equipment is to be fully
involved. The initial testing laboratory is required to check
whether a new preliminary examination is necessary. With the use of
pipe classes, a check is only made as to whether a repetition of
the stress calculation is necessary. Old pipe classes may be used
when no appropriate new pipe classes are available. For the
pressure test, the same test pressure will apply as for the
original pressure test. In the event of the acceptance being
carried out by the manufacturer, this is to be confirmed by means
of a manufacturer declaration in accordance with the legal
provisions of HG 584/2004, in force. Acceptance by the initial
testing laboratory is to be confirmed by a pipeline certificate.
The same stipulations will apply in principle for the
implementation paperwork and for the documentation of repairs as
for new construction.
3.0 DESIGN PRINCIPLES
All height declarations within the plant relate to the plant
level (see Petrom OMV Standard 201). During planning, care should
be taken that fixed surfaces are designed with slopes and thus have
a differing level. The distance between the upper and lower edge of
a pipeline is to be selected so that sufficient space is available
for emptying, drawing off condensate, removal of control valve
cores, etc.
Any necessary foundations for pipe supports are to be dealt with
separately in keeping with the loadings arising and the height
dimensioned accordingly. Supports, scaffolding, pipe bridges, etc.,
must be capable of withstanding the forces exerted by the
pipelines.
The plant pipe bridges leading to offsite facilities are to be
designed to correspond to the levels of stagings of the offsite
pipe bridges.
The staging height difference between the plant and the offsite
pipe bridges should be at least 1.0 m and should also be dependent
on the design of
the transition point of the pipelines from plant to
-
(insite) / amplasament exterior (offsite).
Pentru caile de acces vezi Normele Petrom OMV 201, 202, 204.
Toate cotele de inaltime din afara instalatiei vor fi indicate
ca valori absolute peste nivelul marii.
3.1 Instalatii de intretinere
Capacitatea de montare si demontare a armaturilor si utilajelor
trebuie sa existe fara a fi necesara demontarea altor tronsoane de
conducta. Daca, din motive de spatiu, acest lucru nu este posibil,
se vor folosi piese de pasuire demontabile. Acolo unde este
necesar, pentru demontarea ventilelor de siguranta cu greutate
mare, se vor folosi brate pivotante (de rotire) sau suporti pentru
demontare. Renuntarea la bratele pivotante respectiv la suportii
pentru demontare necesita acordul responsabilului de proiect OMV
Petrom. La aparate si utilaje conductele vor fi astfel pozate incat
deservirea si intretinerea lor sa poata fi executate in pozitia
normala de lucru. 4.0 DOCUMENTE DE EXECUTIE 4.1 Documente de
executie necesare Toate documentele tehnice vor fi intocmite
conform Normelor Petrom OMV 301 si 310. De regula, inainte de
inceperea lucrarilor de planificare, se va stabili care documente
sunt desene as built originale. Daca aceste desene exista, ele vor
fi prelucrate in cadrul derularii operatiilor de proiectare.
Sistemul CAD va fi utilizat in prelucrarea documentelor tehnice. De
regula, aceste aspecte trebuie sa fie convenite cu responsabilul de
proiect Petrom OMV. In functie de necesitatea de informare, vor fi
puse la dispozitia ofertantului sau a executantului lucrarilor de
montaj urmatoarele documente:
- Norme Petrom OMV - Planuri de santier (amplasarea
instalatiilor de
santier) - Planuri de amplasament - Planuri de montaj si planuri
in sectiune in
care sa fie indicate locurile de amplasare a masinilor,
aparatelor si a altor sisteme din cadrul unei instalatii
- Planuri generale pentru subteran - Caietul de sarcini
offsite facilities.
For traffic routes, see also Petrom OMV Standards 201, 202 and
204.
All altitudes outside plants are to stated in absolute values
above the sea level.
3.1 Maintenance facilities
Fittings and machines must be capable of installation and
removal without the need for dismantling other pipeline points. If
this is not possible due to space considerations, then demountable
adaptors are to be provided. Where necessary, swivel arms and
lifting beams are to be provided for the dismantling of heavy
safety valves and other fittings. Omission of swivel arms or
lifting beams requires the agreement of the Petrom OMV project
manager. With equipment and machines the pipelines are to be laid
out in such a manner that operation and maintenance of the
equipment and machines is possible in a reasonable position. 4.0
IMPLEMENTATION DOCUMENTATION 4.1 Implementation documentation to be
compiled All technical documentation is to be completed in
accordance with Petrom OMV Standards 301 and 310. In principle,
before commencement of planning it should be ascertained as to
which planning documentation is available as as-built drawings. If
such are available, then these should be revised during the course
of the planning process. When CAD is to be used, this must be taken
into account in the revision of available plan documentation. In
principle, this must be carried out in agreement with the Petrom
OMV project manager. In keeping with information requirements, the
following documentation is to be provided for the bidder or
Contractor of the installation works: - Petrom OMV Standards; -
Site plans (layout of site facilities); - Site plans; - Floor plans
and sections indicating the location of machines, equipment and
other installations within the individual plants. - Underground
services plans - Schedule of works
-
Pag / Page 14 Norma Petrom OMV H 1001 / Petrom OMV Standard H
1001
- Diagramele P&I - Lista de conducte - Desene de conducte,
si anume: planuri de
tubare, planuri de ocupare a estacadelor de conducte, izometrii,
liste de piese, extrase de specificatii material
- Lista punctelor de legatura - Lista punctelor de trecere din
interiorul
instalatiei in exterior (insite / offsite) - Lista aparatelor de
masura, reglare si control
si a sistemelor de decompresie - Documentele de constructie a
conductelor
din contractul respectiv, in care sunt furnizate date
referitoare la tronsoanele pentru care in normele de executie nu
exista date sau nu sunt precizate detaliile
- Norme de constructie a conductelor, care contin exemple tipice
de constructie, cum ar fi desene de executie a structurilor
speciale de sustinere. In cazuri speciale (proiecte de mare
amploare), in completare la desenele izometrice, va fi stabilit un
model de conducte.
4.1.1 Lista de conducte EXECUTANTUL va intocmi o lista de
conducte conform unui formular standardizat, cu indicarea tuturor
datelor solicitate, pe care o va remite spre verificare si avizare
organului de control acreditat cu activitatea de control si
verificare. In aceste liste vor fi inregistrate toate conductele
din diagrama P&I respectiv din diagrama simplificata P&I
pentru amplasamentele exterioare (Offsite).
Ele contin date referitoare la:
- Denumirea conductelor - Numarul conductei (diametrul
nominal,
nr.instalatiei, nr.curent) si categoria de conducte
- Traseul conducte (de la...catre) - Numarul desenului aferent
P&I si desen
izometric - Conditii de lucru: mediul transportat, starea
(lichid sau gazos), densitate, debit, viteza de curgere,
temperatura, presiune
- Conditii de regim max.admise: Tmax, Pmax - Material de baza
(teava) - Grosimea peretelui - Protectia la coroziune - Izolatie,
sistem insotitor de incalzire - Conditii de verificare: verificarea
elasticitatii,
tratament termic, verificarea duritatii, incercari
nedistructive, presiune de
- Pipeline & instrumentation flow diagrams - Pipeline list -
Pipeline drawings, namely: Pipeline plans, pipe bridge plans,
isometric drawings, parts lists and material statements - List of
linking points - Lists of transition points (in-site/offsite) -
Lists of measuring and control equipment and pressure relief
installations
- Assignment-related pipeline design documentation containing
those specifications on parts that are not, or not in the necessary
detail, included in the implementation standards for pipelines.
- Pipeline design standards that include
typical design examples, such as: Detail design drawings for
special supports. In special cases (e.g. with major projects) a
pipeline model can be defined in the planning order complementary
to the isometric drawings.
4.1.1 Pipeline list The Contractor is required to compile a
pipeline list on the printed form, stating all required data and to
submit it for evaluation of the inspection requirement of the
stated location for approval and which must also be entered. These
pipeline lists must include the pipelines from the pipeline &
instrumentation flow diagram or simplified pipeline &
instrumentation flow diagram for offsite.
They will contain specifications concerning:
- Pipeline description: - Pipeline number (nominal width, plant
number, consecutive number) and pipe class; - Pipeline route from
to; - Respective drawing number (pipeline & instrumentation and
isometric drawing); - Work conditions: Medium, state (liquid or
gaseous), density, flow rate, flow speed, temperature, pressure; -
Highest permissible operational conditions: Tmax, Pmax - Basic
material (pipe); - wall thickness; - Corrosion protection; -
Insulation, heating; - Test conditions: Testing of elasticity, heat
treatment, hardness test, nondestructive tests, test pressure, test
medium, certification
-
incercare, mediul de control, certificate de receptie finala
- Cerinte privind gradul de puritate (curatenie) a conductei
- Observatii 4.1.2 Desene de conducte De regula, acestea vor fi
intocmite pentru:
- conductele de transport produs - conductele de transport
agenti de exploatare
peste DN 50 inclusiv conductele de alimentare la
distribuitoarele de abur
Pentru restul conductelor de agenti de exploatare si de
incalzire pana la DN 40, executantul va intocmi schite de sistem.
In desenele de conducte se vor indica:
- Diametrul nominal, numarul conductei si categoria conductei -
Traseul conductei de la... catre (valabil
pentru desenul izometric), cu mentionarea numarului pozitiei
masinilor, aparatelor si conductelor la care se racordeaza
respectiva conducta. La aparate si masini se va indica si numarul
stutului. Ordonarea si pozitia ramificatiilor, a punctelor de
intersectare, a pieselor fasonate, a flanselor, organelor de
inchidere, a armaturilor, a reazemelor standard si a celor
speciale, a pieselor speciale
- Pozitia si inaltimea conductelor vor fi indicate prin
coordonate si cote de inaltime - Dispunerea si pozitia conductelor
subterane,
a puturilor, a traseelor de cablu, a fundatiilor, ancorajelor
etc.cu cotele teoretice rezultate din montarea aparatelor si
masinilor, in masura in care ele sunt necesare pentru executarea
lucrarilor la nivel suprateran
- Numarul pozitiei echipamentelor de masura,
reglare si control si a componentelor speciale - Diametrul
nominal, numarul conductei si
categoria conductei in punctul de trecere interior/exterior
(insite/offsite) pentru ambele conducte (indicate de ex.in planul
punctelor de trecere)
- Numarul desenelor de racorduri - Conditii minimale de
livrare
In planurile de ocupare a estacadelor , planurile de tubare si
in desenele izometrice vor fi folosite simbolurile grafice
(pictogramele) specificate in Norma Petrom OMV 302 Partea 3. In
primele doua tipuri de planuri se vor face
of final acceptance; - Requirements concerning purity degree
(cleanliness) of pipe - Remarks 4.1.2 Pipeline drawings These are
normally to be produced for: - Product pipelines; - Resource
pipelines from DN 50 including the feeder lines to the steam
distributors. The Contractor must draw up system drawings for the
remaining resource and heating lines up to DN 40. The pipeline
drawings are to include information concerning: - Nominal width,
pipeline number and pipe
class; - Pipeline route from to (applies for
isometric drawings) with statement of the item number of
machines, equipment and lines to which the line is connected. With
equipment and machines, the respective connecting piece
number.Configuration and location of branch circuits and nodes,
shaped parts, flanges, shut-off devices, fittings, standard and
special supports, special parts.
- The position and height of pipelines are to be stipulated by
coordinates and height indications.
- Configurations and location of underground pipelines, shafts,
cable routes, foundations, anchorages, etc., with the theoretical
masses derived from the layout of the equipment and machines
insofar as these are necessary for the overground
implementation.
- Item numbers for measuring and control equipment, special
parts, etc.
- Nominal diameter, pipeline number and pipe class at the
transition point offsite/plant for both pipelines (e.g. in pipeline
transition point plan).
- Connection drawing numbers - Delivery limits.
In pipe bridge layout drawings, pipe installation drawings and
isometric drawings, graphic symbols are to be used in accordance
with Petrom OMV Standard 302 Part 3. In the two first-stated
drawings, the graphic
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Pag / Page 16 Norma Petrom OMV H 1001 / Petrom OMV Standard H
1001
reprezentari la scara. In toate planurile mentionate va fi
indicata pozitia sistemului de actionare (de ex.arbore/ roata de
mana/ motor). Izometriile vor fi astfel intocmite incat sa poata fi
inregistrate toate informatiile necesare pentru intocmirea
documentatie pentru sudarea conductelor (vezi Norma Petrom OMV H
3001). 4.1.3 Diagramele de flux pentru conducte si instrumente
Diagrama de flux P&I se intocmeste pe baza diagramei de flux
tehnologic. Pentru zona amplasamentelor exterioare (Offsites), in
loc de diagrama P&I se poate intocmi o schema-bloc sau o
diagrama P&I simplificata. In diagrama P&I vor fi
reprezentate toate echipamentele tehnice ale unei instalatii. Toate
digramele vor fi intocmite conform Normei Petrom OMV 302. 4.1.4
Lista de piese pentru tronsoane de conducte (formular standardizat)
In acestea se vor specifica:
- numarul conductei - denumirea - traseul conducte (de la
..catre) - clasa conductei - numarul piesei - diametrul nominal -
denumirea tronsoanelor ce urmeaza a fi
utilizate si cantitatea de tronsoane fara rezerva de
constructie, ultima cantitate specificata fiind cea valabila
4.1.5 Listele de montaj al tronsoanelor de conducte (formular
standardizat) In acestea vor fi indicate cantitatile necesare,
sortate pe liste de piese. Pe langa indicarea numarului fisei
pentru respectiva lista de piese, listele de montaj vor avea
aceleasi rubrici ca si listele de piese pentru tronsoanele de
conducte. De asemenea, cantitatea inregistrata ultima data va
ramane cea valabila. 4.1.6 Devizul pentru constructia de conducte
Daca nu este altfel convenit, pentru lucrarile de montaj conducte
se va intocmi un deviz. Fiecare mod de amplasare al pieselor si
materialelor va fi convenita cu responsabilul de proiect OMV
Petrom.
symbols are to be entered in full scale. The location of the
drive (e.g. spindle, hand-wheel, motor, etc.) is to be stated in
all the above-stated drawings.
Isometrics are to be configured in such a way that all
information necessary for the welding documentation of the pipeline
can be entered (see Petrom OMV Standard H 3001). 4.1.3 Pipeline and
instrumentation flow diagram The process flow diagram is the basis
for the pipeline and instrumentation flow diagram. A clock diagram
or simplified pipeline and instrumentation flow diagram can be use
instead of the pipeline and instrumentation flow diagram in the
offsite area. The complete technical equipment of a plant is to
entered in the pipeline and instrumentation flow diagram. All flow
diagrams are to be drawn up in accordance with Petrom OMV Standard
302. 4.1.4 Pipeline components parts lists (standard form) These
are to include the following:
- pipeline number; - designation; - pipeline route from to; -
pipe class; - part number; - nominal width; - description of the
pipeline parts to be
used as well as their required quantity without building
reserves, whereby the last-entered quantity is applicable. 4.1.5
Pipeline components parts lists (standard form) In these, the
required quantities are to be stated, sorted over several parts
lists. Apart from stating the respective parts list sheet numbers,
the listings must indicate the same column configuration as the
pipeline components parts lists. Once again, the last-entered
quantity is applicable. 4.1.6 Pipeline construction schedule of
works Where not otherwise agreed, a schedule of works is to be
drawn up for the pipeline construction works. The respective type
of raw material listing is to be agreed with the Petrom OMV project
representative.
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5.0 DISPUNEREA CONDUCTELOR Dispunerea conductelor trebuie sa fie
vizibila, pe criterii economice si in general dispusa pe 3 directii
principale, in unghi drept una fata de cealalta (diferenta de
inaltime a etajelor, de regula 1 m). Vezi Norma Petrom OMV 201.
Daca conductele sunt pozate pe grinzi transversale sau pe
constructii metalice, reazemele vor fi executate ca aparate de
reazem de alunecare, ca aparate de reazem cu rol de ghidare sau ca
puncte(reazeme) fixe. Pentru distanta intre centrele conductelor
vezi Norma Petrom OMV H 1201 iar pentru izolatie vezi Norma Petrom
OMV L 1001. Conductele de pe estacade nu vor fi asezate pe stalpii
de sustinere a estacadei, pentru ca este posibila supraetajarea
(supraincarcarea) ulterioara a estacadei. Etajarea conductelor in
estacade (de ex. de la etajul 1 la etajul 3) va fi executata in asa
fel incat etajarea sa nu impedimenteze tubarile executate ulterior
sau sa le faca imposibil de executat. In acest caz etajarea se va
face in exteriorul estacadelor. Nu este admisa schimbarea directiei
de pozare a conductei sau executarea coturilor de dilatatie fara
etajare. Se va evita fixarea reazemelor de conductele invecinate.
Fac exceptie conductele din sistemul insotitor de incalzire,
conductele de impuls sau alte solutii speciale convenite cu
responsabilul de proiect OMV Petrom. Imbinarea tronsoanelor de
conducta va fi realizata prin sudare. Flansele vor fi utilizate
numai pentru racordarea la aparate, utilaje si armaturi. Perechile
de flanse vor fi folosite numai in locurile unde acestea sunt
necesare din motive tehnologice. La conductele zincate si cu
acoperire pe interior, imbinarile vor fi convenite cu responsabilul
de proiect Petrom OMV. Pentru conductele care, din motive
tehnologice, trebuie sa fie executate in panta descendenta
continua, se vor indica in specificatia tehnica ordonarea si modul
de executie a reazemelor. Trasarea conductelor care transporta
medii cu tendinta de condensare va fi realizata pe cat posibil fara
puncte de adancime (nivel minim) pentru a evita acumularea de
lichid. Vor fi prevazute elementele de golire necesare. 5.1
Traseele de conducte Acoperirea traseelor va fi conform Normei
Petrom OMV 201 si se va intreprinde in felul urmator:
5.0 PIPELINE CONFIGURATION The configuration of pipelines must
be clearly laid-out, cost-effective and generally arranged in three
main directions at right-angles to one another (level height
difference normally 1.0 m). See also Petrom OMV Standard 201. If
pipelines are laid on sleeper beams or on steel structures, the
bearers are to be designed in the form of sliding bearings, pilot
bearings or fixed points. For pipe center-to-center distances see
Petrom OMV Standard H 1201, for insulation see Petrom OMV Standard
L 1001. Pipelines on pipe bridges must not be arranged over pipe
bridge uprights so that subsequent augmentation of the pipe bridge
(overloading) is possible.
The raising of pipelines in pipe bridges (e.g. from the 1st to
the 3rd floor) is to be carried out in such a way that subsequent
pipe installations are not impeded or made impossible by this
staging. Here, the staging must be implemented outside the pipe
bridge. Implementation of change of direction or expansion bends
without staging is not permitted. The fastening of pipe suspension
systems to neighboring pipelines should be avoided. Exceptions are
heating systems, pulse lines or special solutions agreed with the
Petrom OMV project manager. Connections between pipeline parts are
to be carried out by welding. Flanges are only to be used for
connection to equipment, machines and fittings. Flange pairs are
only to be installed at points where they are deemed necessary for
operational reasons. With galvanized and internally coated
pipelines, the type of pipeline connections are to be determined in
collaboration with the Petrom OMV project representative. With
pipelines which must be implemented with a continuous downward
gradient, the configuration and constitution of the pipe supports
are to stated in the technical specification. In the case of media
with a tendency towards condensation, where possible the pipeline
route should be without low points in order to avoid liquid locks.
Provision for drainage is to be provided where necessary. 5.1 Pipe
routes
The assignment of pipe routes is to be carried out in accordance
with Petrom OMV Standard 201 as
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Pag / Page 18 Norma Petrom OMV H 1001 / Petrom OMV Standard H
1001
Conductele de abur si de condens vor fi pozate la marginea
traseului, pe partea mai usor accesibila. In continuare vor fi
pozitionate restul conductelor de agenti de exploatare si in final
conductele de transport produs. Se recomanda pozarea conductelor de
agenti de exploatare pe etajul inferior al podurilor de conducte si
pozarea conductelor de facla pe etajul superior. Conductele care
isi modifica forma din cauza dilatatiei termice vor fi pozate cu
distanta suplimentara prevazuta de Norma Petrom OMV H 1201. La
conductele cu flanse cu diafragme de masura se va verifica traseul,
pentru a se asigura spatiu suficient pentru conductele
instrumentelor si pentru efectuarea operatiilor de intretinere.
Tronsoanele de intrare si de iesire in dispozitivul de masura vor
fi trasate rectiliniu, cu lungimile necesare. 5.2 Coturi Pe cat
posibil , vor fi prevazute coturi standardizate. In conditii
normale, pentru montajul conductelor se utilizeaza coturi de 90
> DN 25 si coturi de 45 > DN 50 (sub forma de coturi de 90
care se pot separa). Coturile de dimensiuni mici pot fi realizate
prin indoirea la cald a tevilor. In cazuri speciale convenite intre
parti se pot folosi tevi din materiale nealiate 15 Mo3 si cu
diametre nominale mai mari, care sunt deformate la cald respectiv
la rece. Exemplu: deformarea tevilor cu < DN 80, cu ajutorul
arzatoarelor manuale, respectand temperatura de prelucrare la cald.
Tevile din otel aliat nu pot fi prelucrate nici la cald nici la
rece fara o aprobare speciala. 5.3 Inchideri de capat Daca se are
in vedere o extindere ulterioara a conductei sau daca este necesara
curatirea acesteia, vor fi prevazute flanse oarbe, in caz contrar
conductele vor fi inchise la capete cu capace de teava. Din motive
de corodare se va evita inchiderea tronsoanelor fara scurgeri de
tranzit. 5.4 Flanse Flansele vor fi astfel amplasate incat sa se
asigure accesul la ele. Este permisa strangerea ulterioara a
imbinarilor cu flansa cu ajutorul instrumentelor mobile de montaj,
in functie de particularitatile locale, de frecventa utilizarii si
a intretinerii. In cazul in care exista riscuri pentru personalul
operativ (in zona trecerilor, podetelor, scarilor), la conductele
de transport substante periculoase sau
follows: Steam and condensate lines must be laid on the edge of
the most easily accessible side of the pipe route. In further
succession the remaining resource pipelines are to be laid and
finally the product pipelines are to be located. Every effort
should be made to plan the resource pipelines on the lowest pipe
bridge level and the flare pipeline on the uppermost level.
Pipelines that change their status due to heat expansion should be
provided with additional spacing in accordance with Petrom OMV
Standard H 1201. On pipelines with metering pipe flanges, the
pipeline route must be checked to ensure sufficient spacing for
instrument lines and maintenance works. The input and output routes
must run straight for the lengths technically necessary for
measurements. 5.2 Bends The most standardized possible bends are to
be used in designs. Normally for the assembly of pipelines, 90
bends DN 25 and 45 bends DN 50 (in the form of a spaced-out 90
bend) are to be planned. Bends with smaller dimensions are to be
formed by hot-bending the pipes. In agreed special cases, also
pipes with greater nominal width in unalloyed materials and 15Mo3
can be hot- or cold-shaped. For example, pipes with nominal widths
DN 80 can also be shaped by means of manual torches while
maintaining the hot processing temperature. Pipes of alloyed steel
may be neither hot- nor cold-shaped without special permission. 5.3
End closures If a subsequent extension of the pipeline can be
expected or cleaning will be necessary, then blank flanges are to
be provided, otherwise the ends of pipelines are to be closed off
with pipe caps. Pipeline sections without throughflow are to be
avoided for corrosion reasons. 5.4 Flanges Flanges in pipelines are
to be arranged so as to be accessible. It is permissible that the
subsequent tightening of flange connections is carried out
usingmobile assembly assistance in relation to the local situation
or operational and maintenance frequency.In the event of a possible
hazard to persons (in the vicinity of passageways, platforms,
ladders, etc,), the flange connections of pipelines that carry
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toxice respectiv lesie si acizi, imbinarile cu flansa vor fi
prevazute cu carcase de protectie la stropire (vezi Norma Petrom
OMV 202). De regula acestea trebuie sa fie din plastic. Produsul ce
urmeaza a fi utilizat va fi convenit cu responsabilul de proiect
OMV Petrom. 5.4.1 Rugozitatea la flansele de conducte si la
armaturi Tinand cont de cerinta ca la flanse ratele de scurgere sa
fie mici, se vor folosi flanse DIN cu element de etanseitate in
forma de E, rugozitate medie Rz = 16 m pe zona strunjita si flanse
conform ASME/ANSI B 16.5 model Raised Face cu o valoare de
rugozitate in centru Ra = 125 inch pana la 250 inch. 5.5 Organe de
inchidere 5.5.1 Selectia Alegerea organelor de inchidere se va face
conform celor indicate in clasele de conducte. Organele de
inchidere intre conducte, sisteme sau aparate cu parametri diferiti
de exploatare vor fi alese dupa categoria cu parametri maxim
admisi. 5.5.2 Ordonarea si accesul la organele de inchidere
Organele de inchidere trebuie sa fie astfel montate incat sa poata
fi posibila deservirea sau intretinerea de la nivelul solului sau
de pe o platforma (vezi Anexa 6 fig.1 si 2 si Norma Petrom OMV 202
pct.4.0). Dupa posbilitati, se vor evita rotile dintate (roti de
lant) sau elementele de prelungire a arborilor, tijelor etc.
Organele de inchidere de pe poduri de conducte sau traverse, ca si
elementele de ventilatie si golire vor fi amplasate pe cat posibil
grupate. 5.6 Armaturi de reglare
Armaturile de reglare de la sistemele de conducte care nu pot fi
scoase din functiune vor fi prevazute cu un element de ocolire si
doua organe de inchidere. Valva de bypass trebuie sa prezinte
caracteristica de reglare, iar valoarea Kv/Cv sa fie la fel de mare
decat cea a armaturilor de reglare. Se poate renunta la elementul
de ocolire daca, in cazul defectarii ventilului de reglare,
instalatia poate fi mentinuta in functiune si fara acesta. Armatura
de reglare si valva de bypass vor fi astfel ordonate incat sa se
evite o acumulare de lichid. La robinetii cu trei
dangerous or noxious substances, alkalis or acids are to be
provided with splash protection rings (see Petrom OMV Standard
202). The splash protection rings are normally to be planned in the
form of plastic rings. The brand to be used is to be agreed with
the Petrom OMV project representative. 5.4.1 Roughnesses on
pipeline flanges and fittings Due to the requirement for low leak
rates for flanges, DIN flanges turned with raised faces as Form E,
averaged roughness depth Rz = 16 m and flanges in accordance with
ASME/ANSI B 16.5 in the raised face design with average roughness
depth Ra = 125 inch to 250 inch are to be used. 5.5. Shut-off
devices 5.5.1 Selection Shutoff devices are to be selected from
those devices stipulated in the pipe classes. Shut-off devices
between pipelines, systems or equipment with differing operational
conditions are to be chosen in accordance with the pipe class for
the highest permissible operational conditions. 5.5.2 Configuration
and access Shut-off devices should be installed in such a way that
operation and maintenance is possible from the ground or from a
platform (see Annex 6, Fig 1 and 2 and Petrom OMV Standard 202
Point 4.0). Chain wheels and spindle extensions should be avoided
where possible. Shut-off devices on pipe bridges and in sleepers as
well as venting and discharge provisions should be arranged in
groups where possible.
5.6 Control fittings
Control fittings in pipe systems that cannot be taken out of
service are to be provided with a bypass arrangement and two
shut-off devices. The bypass valve must have control
characteristics and its Kv/Cv value must be equivalent to that of
the control fittings. This bypass fitting can be dispensed with
when the operation of the plant can also be maintained without the
bypass fitting when the control valve malfunctions. The control
fitting and the bypass are to be arranged so as to avoid
accumulations of
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Pag / Page 20 Norma Petrom OMV H 1001 / Petrom OMV Standard H
1001
cai se va stabili in mod special modul de ocolire. Se vor lua
masuri de asigurare a elementelor de golire, de degajare a
presiunii si de purjare (suflare) Se va asigura un bun acces la
flansa de baza a ventilului de reglare. 5.7 Planificarea montarii
aparatelor de masura si
reglare Pentru montarea diafragmelor se vor dimensiona
tronsoanele de intrare si iesire conform DIN EN ISO 5167-1. De
asemenea, se vor lua in calcul distanta laterala fata de conductele
invecinate, pozitia conexiunilor de impuls (stuturi) si a
recipientilor de condens si de separare. La contoare se va tine
cont de accesibilitate, demontarea in fata si in sus, ca si de
tronsoanele de intrare si iesire la acestea. Dimensionarea
tronsoanelor de intrare si iesire se va face in conformitate cu
reglementarile aferente pentru aparatele de masura si reglare.
Debitmetrele cu plutitor vor fi montate vertical iar debitul de
tranzit trebuie sa se execute de jos in sus. 5.8 Site de protectie
Sitele de protectie vor fi prevazute numai in conductele
orizontale. Din cauza cotelor de montaj mari, ele vor fi montate
intr-un unghi de 45 orientare in jos. Sitele si captatoarele de
impuritati vor fi planificate in functie de necesitatile de
exploatare (cu posibilitate de demontare a cartusului). 5.9 Discuri
de separare Discurile de separare necesare pentru exploatarea
instalatiei sunt mentionate pe diagrama P&I respectiv pe
diagrama simplificata P&I pentru amplasamentele in exterior
(offsites). Discurile de separare vor fi realizate conform Normei
Petrom OMV H 2401,2402 si H 1355. Pentru rafinarie se aplica
prevederile prescriptiei interne Montarea si demontarea discurilor
de separare. 5.10 Organe de inchidere si discuri de separare la
marginea (terminalul) instalatiei La trecerea de la conductele
instalatiei la zona exterioara (offsite) se vor amplasa, in
conditii normale, organe de inchidere cu discurile de separare tip
ochelari plasate inainte sau dupa organul de inchidere, in functie
de necesitati.
liquids. With 3-way valves, the nature of the bypass is to be
defined separately. Provision is to be made for appropriate
draining, pressure release and blow-out requirements. Attention
should be paid to good accessibility for the base flange of the
control valve. 5.7 Planning of measurement and control devices With
the planning of apertures, input and output sections are to be
dimensioned in accordance with DIN EN ISO 5167-1. The lateral
distance to the neighboring pipelines, the locations of the pulse
sampling necks (nozzles) as well as the condensate and separator
containers are to be taken into account. With meters the
accessibility, the forward and upward removal as well as the input
and output sections are to be taken into account. Dimensioning of
the input and output sections is to be carried out in accordance
with the respective regulations for the measurement and control
devices. Float-type flow meters are to be planned in a vertical
position and the throughflow must take place from bottom to top.
5.8 Protective filters Protective filters are only to be planned in
horizontal pipelines. Due to the large mounting dimensions they are
to be arranged downwards at an angle of less than 45. Filters and
dirt traps are to planned in such a way as to simplify operation
(possibility of removing cartridges). 5.9 Blanking plates
Information on the blanking plates necessary for plant operation is
to be found in the pipeline & instrumentation flow diagram or
the simplified offsite pipeline & instrumentation flow diagram.
The blanking plates are to be constructed in accordance with Petrom
OMV H 2401, 2402 and 1355. For the refinery the regulation of the
works management Setting and drawing blanking plates will apply.
5.10 Shut-off devices and blanking plates on the plant perimeter
Shut-off devices with spectacle blinds are normally to be arranged
before or after the shut-off device at the transition from plant
pipelines to the offsite area in accordance with plant
requirements.
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Daca sunt necesare armaturi de refulare, acestea vor fi montate
suplimentar, pe partea cu instalatia. Toate componentele (armaturi,
imbinari cu flansa, discuri de separare) necesare in zona de
trecere interior / exterior (insite/offsite) vor fi specificate si
executate constructiv de catre EXECUTANT. Cordoanele de sudura din
marginea zonei de trecere vor fi executate pe suprafata din zona
din interiorul instalatiei (insites). Limita de livrare a
domeniului Offsites se termina inainte de contraflansa armaturii
(prevazuta Insites) respectiv a discului de separare. Conductele
trebuiesc prevazute cu punct fix in interiorul instalatiei (Insites
).
6.0 ELEMENTE DE VENTILATIE SI GOLIRE In toate punctele de nivel
maxim respectiv minim, conductele vor fi prevazute cu posibilitati
de aerisire si golire (in functie de conditiile locale, pot fi
necesare si stuturi de aspiratie). Organele de inchidere vor fi
prevazute la capatul liber cu o flansa oarba. Orificiile de
aerisire care sunt necesare numai pentru probele de presiune
hidraulica respectiv daca mediul de transport este apa, nu vor fi
prevazute cu un organ de inchidere ci numai cu flansa si flansa
oarba.
Conductele de decompresie (detenta) si de golire a aparatelor si
masinilor care transporta gaz lichefiat vor fi prevazute cu
inchideri duble. 7.0 SUPAPE DE SIGURANTA SI CONDUCTE DE PURJARE 7.1
Supape de siguranta (vezi Norma Petrom OMV H1001 si H3001) La
supapele de siguranta care nu sunt montate direct la rezervorul sau
la sistemul de conducte asigurat se va calcula suplimentar
pierderea de presiune in conducta de intrare si de iesire
(alimentare si evacuare).
Where non-return valves are necessary for process requirements,
then these are to be planned additionally in on the plant side. All
necessary installations (fittings, flange connections, blanking
plates, etc.) on the transition point to the offsite area are to be
specified and structurally implemented by the CONTRACTOR. The
welding joint on the delivery perimeter is to be included in the
in-site scope of services. The delivery limit of the offsite area
ends before the counterflange of the shut-off device or the
blanking plate to be provided by the plant. The pipelines are to be
formed on the plant side with a fixed point on the plant
perimeter.
6.0 VENTING AND DRAINAGE PROVISIONS Venting and drainage
facilities are to be provided at all high and low points of the
pipelines (depending on local conditions, extraction connector
pieces may also be necessary). The shut-off devices are to be
provided with a blind flange at the free end. Venting provisions
that are only required for water the water pressure test or for the
medium water do not require a shut-off device but rather merely a
flange and blind flange. Depressurizing and draining lines of
equipment and machines handling liquid gas will be fitted with
double shut-off devices. 7.0 SAFETY VALVES AND BLOWING-OFF LINES
7.1 Safety valves (see Petrom OMV Standards H 1001 and H 3001) With
safety valves that are not located directly on the secured vessel
or pipe system, the pressure loss of the input or output line is to
be checked. The nominal width is to be designed so that the overall
pressure loss of the line between the
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Pag / Page 22 Norma Petrom OMV H 1001 / Petrom OMV Standard H
1001
Diametrul nominal va fi astfel conceput incat pierderea totala
de presiune in zona dintre aparatul asigurat si flansa de intrare a
ventilului de siguranta sa nu ajunga la 3 % din presiunea reglata.
Se va lua in calcul debitul max.de purjare a ventilului de
siguranta si nu debitul proiectat. Conductele de iesire din
ventilul de siguranta trebuie sa aiba cel putin diametrul nominal
al flansei de iesire. La tronsoanele de conducte care pot fi
inchise (blocabile), vor fi prevazute ventile de siguranta pentru
asigurarea la dilatatia termica a mediului transportat. Inainte si
dupa ventilele de siguranta nu trebuie sa fie montate discuri de
separare. 7.2 Conducte de purjare Purjarile libere pot fi facute
numai la mediile care nu sunt toxice, inflamabile si care nu au
miros neplacut. Aceste conducte trebuie sa se situeze la min.3 m
desupra zonei de deservire. In alegerea vitezei admise de evacuare
trebuie sa se tina cont de poluarea sonora si, daca este nevoie,
vor fi prevazute amortizoare de zgomot. Orificiile de purjare vor
fi astfel amplasate incat sa se evite punerea in pericol a
personalului si deteriorarea altor tronsoane.
Fixarea acestor conducte trebuie sa fie foarte buna (sa se
acorde atentie fortelor de reactiune din timpul functionarii).
Pentru evitarea acumularilor de lichid, la conductele de purjare
cu abur sau la cele la care este posibila o acumulare de apa (din
cauza umiditatii aerului) va fi prevazut un orificiu cu diametrul
de 10 mm in punctul de inaltime minima a conductei. La aceste
orificii vor fi prevazute tevi cu min.DN 20 din motive de
siguranta, doar daca personalul poate fi pus in pericol de
evacuarea condensului. Daca un ventil de siguranta purjeaza in
sistem inchis, conducta de purjare va fi pozata cu panta
descendenta. Ventilul de siguranta trebuie sa fie montat deasupra
acestei conducte colectoare.
7.2 Elemente de blocare (inzavorare)(vezi Norma Petrom OMV H
1002 si H 3002) Acestea trebuie sa fie amplasate acolo unde n + 1
ventile de siguranta asigura acelasi sistem. Acestea trebuie sa
asigure faptul ca n ventile de siguranta raman in functiune si ca
organele de inchidere din fata si din spatele ventilului ce urmeaza
sa fie demontat sunt inchise in acelasi timp. In functie de
posibilitati, vor fi prevazuti robineti de dirijare, robineti cu
trei cai sau sisteme cu sine. Sectiunea transversala a fluxului de
curgere prin aceste elemente in momentul procesului de comutare /
inversare trebuie sa fie egala cu sectiunea de purjare
secured equipment and the entry flange of the safety valve does
not reach 3% of the set pressure. For this, the maximum blow-off
volume of the safety valve is to be applied and not the design
volume. Safety valve outlet lines should have at least the nominal
width of the outlet flange. With closable pipeline sections, safety
valves must be provided to protect against the thermal expansion of
the medium. No blanking plates may be planned-in either upstream or
downstream of safety valves. 7.2 Blow-off lines Free blow-off
procedures may only be used for non-toxic, non-combustible and
non-malodorous media. These blow-off lines must be situated at
least 3 meters over the operating level. In the choice of
permissible exhaust speed the resultant noise pollution is to be
taken into account, and where necessary sound absorbers are to be
provided. Blow-off lines are to be located in such a way that there
is no risk of injury to persons or interference with other plant
parts.
Care should be taken that the lines are properly fastened (take
into account any reaction forces during operation!)
To avoid fluid accumulations, steam blow-off lines and lines
where water can collect (due to air humidity, etc.) are to be
provided with 10 mm bore holes at the lowest point of the line.
Only if the accumulated condensate could endanger persons,
pipelines of at least DN 20 are to be provided for these bore holes
for safety reasons. Where safety valves blow into a closed system,
then this blow-off line must be laid with a downward gradient. The
safety valve must be located above this collector pipe.
7.3 Locking systems (see Petrom OMV Standards H 1002 and H 3002)
Locking systems must be arranged where n + 1 safety valves protect
the same system. This locking system should ensure that there are
always n safety valves in operation and the sut-off devices
upstream and downstream of the safety valve to be removed are
closed simultaneously. Where possible, shuttle valves, 3-way valves
or slide locking systems are to be provided. These shut-off devices
must indicate the blow-off cross-section of the safety valve in the
flow cross-section during the switchover procedure, even in
-
a ventilului de siguranta.
Acolo unde montarea acestor elemente nu este posibila, vor fi
prevazute, de comun acord cu responsabilul de proiect OMV Petrom
sisteme mecanice de zavorare cu lant inoxidabil.
Ventilele de siguranta care fac descarcarea in sistem de facla
sau in alt sistem inchis, care nu poate fi scos din functiune, vor
fi prevazute cu elemente de blocare pe partea de intrare si de
iesire. Exceptiile vor fi convenite cu responsabilul de proiect OMV
Petrom. 8.0 CONDUCTE DE ASPIRATIE LA POMPE SI CONDUCTE SUB
PRESIUNE
8.1. O reducere a unei conducte orizontale de aspiratie la
stutul pompelor pate fi realizata printr-o reductie excentrica
aliniata in partea de sus. In conductele pentru lichide cu continut
de corpuri solide sau pentru gaze care se pot condensa, reductiile
vor fi aliniate in partea de jos. Intre organele de inchidere si
pompe vor fi prevazute in conducta piese intermediare demontabile.
Piesele intermediare care trebuie sa fie demontate pentru
efectuarea operatiilor de intretinere nu vor fi prevazute cu
suporti. Nu vor fi depasite fortele si momentele admise la
stuturile masinilor, indicate de constructor. Dupa caz, vor fi
prevazuti suporti de teava reglabili.
8.2. Sitele si captatoarele de impuritati vor fi marcate pe
diagramele P&I. In conductele de aspiratie de la compresoare
vor fi prevazute site sau filtre. Cartusele sitelor trebuie sa fie
usor de montat si demontat.
8.3. Pe partea de presiune si de aspiratie la pompe, organele de
inchidere respectiv dispozitivele de retinere incepand de la DN
> 200 trebuie sa aiba acelasi diametru nominal ca si stutul
pompei, cu conditia ca prin aceasta sa nu fie influentate valorile
caracteristice ale pompei. Viteza de curgere a lichidelor pe partea
de aspiratie trebuie sa fie de aprox.1m/sec. iar pe partea de
presiune, de aprox.2 m/ sec. Daca stutul pompei are un diametru
nominal mai putin utilizat (de ex. DN 65, 125 etc), se va face
largirea la diametrul imediat superior, respectiv se vor utiliza
dimensiunile corespondente comportarii hidraulice a fluidului
vehiculat. Daca este necesara o cursa lenta de inchidere, se va
folsi drept dispozitiv de retinere un ventil de retinere cu
duza.
an awkward position.
Where these locking systems are not possible, then in agreement
with the Petrom OMV project manager a stainless steel cylinder lock
should be provided.
Safety valves that blow off into the flare system or another
closed system that cannot be taken out of service are to be
lockable at the inlet and outlet sides. Exceptions are to be
proposed and agreed with the Petrom OMV project manager. 8.0 PUMP
SUCTION AND PRESSURE LINES 8.1 A reduction of a horizontal suction
line at the pump connecting piece is to be implemented by means of
an upwards-aligned eccentric reduction piece. In pipelines for
liquids with solid components and for gases that can condense, the
eccentric reduction pieces are to be aligned downwards.
Dismantleable adaptors are to be provided in the pipeline between
the shut-off devices and the pumps. No connecting pieces may be
fitted to dismantleable adaptors that are removed for maintenance
purposes. The permissible forces and torques stated by the machine
manufacturer may not be exceeded on machine connecting pieces.
Adjustable pipe supports are to be provided where necessary. 8.2
St