154838635 Storage Tank Certification Presentation

8/14/2019 154838635 Storage Tank Certification Presentation

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resen e y ser em z

IndustryandCertificationDivision

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WHOWEARE

T RKLOYDUisanindependent,impartial

classification,

cer ca on,an conformityassesmentorganization.

WithitsMarineandIndustryDivisionsprovideswiderangeofservices;Classificationandstatutorysurveysofnewbuildingandexistingships,andcertificationofmarinematerialsandproducts.Thirdpartyinspections,CEmarkinginpressurevessels,systemcertifications,typeapprovalsaresomeofthebusinessesamongsttheothers.


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PHASES TO CERTIFICATION;

APPROVALOFPROJECTSAND

INSPECTIONOFFABRICATION

AND FINALTESTSQUALIFYINGOF

WELDINGPROCEDURESAND


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APPROVALOF

PROJECTS

AND

CALCULATIONS

ARE

EXECUTED

ACCORDING

TO

API

650,653

WealsouseCOADEsoftwaretoverifythecalculationsanddesign,

oana yse es ruc ureweuse program.

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BEFORECONSTRUCTIONOFATANKINTHEWORKSHOPANDINTHEPLANT

EXAMINATIONOF

QUALITYPLAN(ITP)

ISANESSENTIALSTEPNOTTOBEOVERLOOKED.

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QUALIFICATIONOFWELDINGPROCEDURES

WeldingprocedurequalificationrecordsmustmeettherequirementsofSectionIXoftheASMECode.Either AWSD1.1 or AWSD1.6 arealsoacceptablefor ladderand platformassemblies,handrails,stairways,andothermiscellaneous assemblies,butnottheirattachmentsto

.

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QUALIFICATIONOFWELDERS

Theweldersandweldingoperatorsmust bequalified inaccordancewithSectionIXoftheASMECode.

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INSPECTIONOFMATERIALS;

STEELPLATES

PROFILES

FLANGES

etc.

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MARKING

Toenablethevariousfabricatedcomponentstobeassembledtogethercorrectlyonsite,eachparthastobemarkedwithauniquenumbering

system.

Hardstampingmaybeusedaswell,butexceptfortheplateslessthan6mmthick.

Markingalso

provides

traceability

of

each

piece

of

material.

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AFTERFORMING

OF

SHELL

PLATES

RADIUSOFEACHPLATEMUSTBECHECKED

NOTTOSPENDMUCHTIMEDURINGTHISSTEP,APREFORMEDPATTERNMODEL

MADEOF

THIN

METAL

SHEET

CAN

BE

USED.

PRIMERSHOULDBEAPPLIEDBEFORETRANSPORTINGTHESHEETSTOPLANT,ANDINCASEOFNOTTOAFFECTTHEQUALITYOFWELDS,ALLWELDFACESSHOULDBE

.

INCASEANYDEFORMATIONMAYOCCURDURINGTRANSPORTANDSTACKING,

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CONCRETERINGWALL,

AND

BOTTOM

SURFACE

ARE

MEASURED

BY

MEANS

OF

TOTALSTATIONDEVICE.

ANCHORSARE

CHECKED

,MATERIALTYPELOCATION

Tensiletestisrequiredforeachpartyofsteelrodsusedintheconcrete

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BOTTOMPLATES

ARE

SETTLED

ACCORDING

TO

PLATE

ORIENTATION

SCHEME

IN

THE

APPROVEDPROJECT.

BOTTOMPLATESAREWELDEDAFTERCONSTRUCTINGOFCOARSES

LAPWELDEDBOTTOMPLATESUNDERTANK

SHELL

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TWOTYPES

OF

TANK

FLOORING

ARE;

BOTTOMDOWN:Generally,bottomdownisdesignforconerooftanks.Centreoftheflooringisinstalledwithdrainpit.Waterinthetankis accumulatedinthepit(lowestpointofthebottomplate/floor).

BOTTOMUP:Generally,thistypeofdesignisusedforfloatingrooftanks, 3to4collectorpitsareinstalled,closetotheshellplate. Eachofthepitisprovidedwithawaterdrawoffline.

Aslo e

of

1:120

is

suitable

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Theerectionprocedureshallincludethefollowingsteps:

(a)aholeshallbecutinthebottomplateorasumpshall

beplaced

in

the foundation

before

bottom

placement;

(b)aneatexcavationshallbemadetoconformtotheshapeofthedrawoffsump,thesumpshallbeput inplace,andthefoundationshallbecompactedaroundthesump

(c)the

sump

shall

be

welded

to

the

bottom.

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ADJUSTMENTOF

FIRST

COURSE

UPRIGHTNESS,ROUNDNESSANDDIAMETEROFTHECOURSEISMEASUREDMIN.AT8POINTS.

ITIS

CONSIDERED

THAT

THE

WELD

SEAMS

OF

BOTTOM

PLATES

AND

VERTICAL

SEAMSOFTHECOARSEARENOTTOBEINTERSECTEACHOTHER

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, . .

THEN,

VERTICAL

AND

CIRCUMFERENTIAL

WELDS

OF

THE

SECOND

COURSE

ARE

SUCHPRINCIPLEISFOLLOWEDFORTHEOTHERCOURSES.

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FOURTH

THIRD

FIRST

SECOND

COURSE

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TYPICAL ANCHORAGE

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TYPICAL ANCHORAGE

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, .THEN

VACUUM

TEST

IS

PERFORMED.

Vacuumtestingisperformedusingatesting boxapproximately150mm(6in.)wideby750mm(30in.)long withaclearwindowinthetop,whichprovidespropervisibility toviewtheareaunderinspection.

Durin testin ,illumination shallbeade uateforproperevaluationand interpretationofthe

test.

Theopenbottomshallbesealed againstthe. ,

valves,lightingandgauges,shallbeprovidedasrequired.

A soapfilm

solution

or commercial,

leak

detectionsolution, applicabletotheconditions,shallbeused.

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platestoshellplates.

method, oralternatively,byagreement betweenthepurchaserandthemanufacturer,usingtheultrasonic method.Inadditiontotheradiographic orultrasonicexamination theseweldsarealsovisuall examined.

Ingeneral,radiographic inspectionisrequiredforshellbuttwelds,annularplatebuttwelds,andflushtypeconnectionswithbuttwelds.

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TESTINGOF

THE

SHELL

Aftertheentiretankandroofstructureiscompleted,the shellis testedbyoneofthe

following methods:

1Ifwaterisavailablefortestingtheshell,thetankshallbe filledwithwateras follows:

itothemaximumdesignliquid level;iifor

atank

with

atight

roof,

to

50

mm

above

the

weld

connecting

the

roof

plate

or

compressionbar tothetopangleorshell

2

If

sufficient

water

to

fill

the

tank

is

not

available,

the

tank may

be

tested

by painting

a o e o n son e ns e w a g ypene ra ngo

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FIREPROTECTION

FireprotectionsystemshallbeestablishedaccordingtotheNFPAstandards.

Thiss stem

is

ins ected

durin

manufacturin

of

the

installation

and

after

that

functions,andperformanceareexamined.

Systemshallinclude;

Foambasedextinguishing,WatercoolingMonitorsDikeprotection

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FIREPROTECTION

Forthecoolingwaterratesthestandards donotprovidecogruentvalues.Theyonlyprescribeminimumwaterflowrates

API2030 :4.1 litersperminutepersquaremeterNFPA15 :10.5 liters/min.m2

IP19 :2 liters/min.m2

TobeonthesafesideforexposureprotectionwerecommendandapplyNFPArate.

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CATHODICPROTECTION

Bothsacrificialanodesystemorimpressedcurrentsystemareacceptable.

Themain

standard

for

this

ste

is

API

651.

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154838635 Storage Tank Certification Presentation

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