-
Marine Division92571 Neuilly-sur-Seine Cedex- France
Tel: + 33 (0)1 55 24 70 00 - Fax: + 33 (0)1 55 24 70 25Marine
Website: http://www.veristar.comEmail:
[email protected]
2011 Bureau Veritas - All rights reserved
PART E Additional Class NotationsChapters 6 7 8 9 10
NR 467.E2 DT R05 E July 2011
Rules for the Classification ofSteel Ships
-
ARTICLE 1
1.1. - BUREAU VERITAS is a Society the purpose of whose Marine
Division (the "Society") is the classi-fication (" Classification
") of any ship or vessel or structure of any type or part of it or
system therein col-lectively hereinafter referred to as a "Unit"
whether linked to shore, river bed or sea bed or not,
whetheroperated or located at sea or in inland waters or partly on
land, including submarines, hovercrafts, drillingrigs, offshore
installations of any type and of any purpose, their related and
ancillary equipment, subseaor not, such as well head and pipelines,
mooring legs and mooring points or otherwise as decided by
theSociety.
The Society: prepares and publishes Rules for classification,
Guidance Notes and other documents (Rules); issues Certificates,
Attestations and Reports following its interventions
(Certificates); publishes Registers.
1.2. - The Society also participates in the application of
National and International Regulations or Stand-ards, in particular
by delegation from different Governments. Those activities are
hereafter collectively re-ferred to as " Certification ".1.3. - The
Society can also provide services related to Classification and
Certification such as ship andcompany safety management
certification; ship and port security certification, training
activities; all activi-ties and duties incidental thereto such as
documentation on any supporting means, software, instrumen-tation,
measurements, tests and trials on board.
1.4. - The interventions mentioned in 1.1., 1.2. and 1.3. are
referred to as " Services ". The party and/or itsrepresentative
requesting the services is hereinafter referred to as the " Client
". The Services are pre-pared and carried out on the assumption
that the Clients are aware of the International Maritimeand/or
Offshore Industry (the "Industry") practices.1.5. - The Society is
neither and may not be considered as an Underwriter, Broker in
ship's sale or char-tering, Expert in Unit's valuation, Consulting
Engineer, Controller, Naval Architect, Manufacturer, Ship-builder,
Repair yard, Charterer or Shipowner who are not relieved of any of
their expressed or impliedobligations by the interventions of the
Society.
ARTICLE 22.1. - Classification is the appraisement given by the
Society for its Client, at a certain date, following sur-veys by
its Surveyors along the lines specified in Articles 3 and 4
hereafter on the level of compliance ofa Unit to its Rules or part
of them. This appraisement is represented by a class entered on the
Certificatesand periodically transcribed in the Society's
Register.
2.2. - Certification is carried out by the Society along the
same lines as set out in Articles 3 and 4 hereafterand with
reference to the applicable National and International Regulations
or Standards.
2.3. - It is incumbent upon the Client to maintain the condition
of the Unit after surveys, to presentthe Unit for surveys and to
inform the Society without delay of circumstances which may affect
thegiven appraisement or cause to modify its scope.2.4. - The
Client is to give to the Society all access and information
necessary for the safe and efficientperformance of the requested
Services. The Client is the sole responsible for the conditions of
presenta-tion of the Unit for tests, trials and surveys and the
conditions under which tests and trials are carried out.
ARTICLE 33.1. - The Rules, procedures and instructions of the
Society take into account at the date of theirpreparation the state
of currently available and proven technical knowledge of the
Industry. Theyare not a standard or a code of construction neither
a guide for maintenance, a safety handbookor a guide of
professional practices, all of which are assumed to be known in
detail and carefullyfollowed at all times by the Client.Committees
consisting of personalities from the Industry contribute to the
development of those docu-ments.3.2. - The Society only is
qualified to apply its Rules and to interpret them. Any reference
to themhas no effect unless it involves the Society's
intervention.3.3. - The Services of the Society are carried out by
professional Surveyors according to the applicableRules and to the
Code of Ethics of the Society. Surveyors have authority to decide
locally on matters re-lated to classification and certification of
the Units, unless the Rules provide otherwise.
3.4. - The operations of the Society in providing its Services
are exclusively conducted by way ofrandom inspections and do not in
any circumstances involve monitoring or exhaustive
verifica-tion.
ARTICLE 4
4.1. - The Society, acting by reference to its Rules: reviews
the construction arrangements of the Units as shown on the
documents presented by the Cli-
ent; conducts surveys at the place of their construction;
classes Units and enters their class in its Register; surveys
periodically the Units in service to note that the requirements for
the maintenance of class are
met.
The Client is to inform the Society without delay of
circumstances which may cause the date or theextent of the surveys
to be changed.
ARTICLE 55.1. - The Society acts as a provider of services. This
cannot be construed as an obligation bearingon the Society to
obtain a result or as a warranty.5.2. - The certificates issued by
the Society pursuant to 5.1. here above are a statement on the
levelof compliance of the Unit to its Rules or to the documents of
reference for the Services providedfor.In particular, the Society
does not engage in any work relating to the design, building,
productionor repair checks, neither in the operation of the Units
or in their trade, neither in any advisory serv-ices, and cannot be
held liable on those accounts. Its certificates cannot be construed
as an im-plied or express warranty of safety, fitness for the
purpose, seaworthiness of the Unit or of its valuefor sale,
insurance or chartering.5.3. - The Society does not declare the
acceptance or commissioning of a Unit, nor of its construc-tion in
conformity with its design, that being the exclusive responsibility
of its owner or builder,respectively.
5.4. - The Services of the Society cannot create any obligation
bearing on the Society or constitute anywarranty of proper
operation, beyond any representation set forth in the Rules, of any
Unit, equipment ormachinery, computer software of any sort or other
comparable concepts that has been subject to any sur-vey by the
Society.
ARTICLE 66.1. - The Society accepts no responsibility for the
use of information related to its Services which was notprovided
for the purpose by the Society or with its assistance.
6.2. - If the Services of the Society cause to the Client a
damage which is proved to be the directand reasonably foreseeable
consequence of an error or omission of the Society, its liability
to-wards the Client is limited to ten times the amount of fee paid
for the Service having caused thedamage, provided however that this
limit shall be subject to a minimum of eight thousand (8,000)Euro,
and to a maximum which is the greater of eight hundred thousand
(800,000) Euro and oneand a half times the above mentioned fee.The
Society bears no liability for indirect or consequential loss such
as e.g. loss of revenue, lossof profit, loss of production, loss
relative to other contracts and indemnities for termination of
oth-er agreements.6.3. - All claims are to be presented to the
Society in writing within three months of the date when the
Serv-ices were supplied or (if later) the date when the events
which are relied on of were first known to the Client,and any claim
which is not so presented shall be deemed waived and absolutely
barred. Time is to be in-terrupted thereafter with the same
periodicity.
ARTICLE 77.1. - Requests for Services are to be in writing.7.2.
- Either the Client or the Society can terminate as of right the
requested Services after givingthe other party thirty days' written
notice, for convenience, and without prejudice to the provisionsin
Article 8 hereunder. 7.3. - The class granted to the concerned
Units and the previously issued certificates remain valid until
thedate of effect of the notice issued according to 7.2. here above
subject to compliance with 2.3. here aboveand Article 8
hereunder.
7.4. - The contract for classification and/or certification of a
Unit cannot be transferred neither assigned.
ARTICLE 88.1. - The Services of the Society, whether completed
or not, involve, for the part carried out, the paymentof fee upon
receipt of the invoice and the reimbursement of the expenses
incurred.
8.2. Overdue amounts are increased as of right by interest in
accordance with the applicable leg-islation.8.3. - The class of a
Unit may be suspended in the event of non-payment of fee after a
first unfruitfulnotification to pay.
ARTICLE 9
9.1. - The documents and data provided to or prepared by the
Society for its Services, and the informationavailable to the
Society, are treated as confidential. However: clients have access
to the data they have provided to the Society and, during the
period of classifica-
tion of the Unit for them, to the classification file consisting
of survey reports and certificates whichhave been prepared at any
time by the Society for the classification of the Unit;
copy of the documents made available for the classification of
the Unit and of available survey reportscan be handed over to
another Classification Society, where appropriate, in case of the
Unit's transferof class;
the data relative to the evolution of the Register, to the class
suspension and to the survey status of theUnits, as well as general
technical information related to hull and equipment damages, are
passed onto IACS (International Association of Classification
Societies) according to the association workingrules;
the certificates, documents and information relative to the
Units classed with the Society may bereviewed during certificating
bodies audits and are disclosed upon order of the concerned
governmen-tal or inter-governmental authorities or of a Court
having jurisdiction.
The documents and data are subject to a file management
plan.
ARTICLE 1010.1. - Any delay or shortcoming in the performance of
its Services by the Society arising from an eventnot reasonably
foreseeable by or beyond the control of the Society shall be deemed
not to be a breach ofcontract.
ARTICLE 1111.1. - In case of diverging opinions during surveys
between the Client and the Society's surveyor, the So-ciety may
designate another of its surveyors at the request of the
Client.
11.2. - Disagreements of a technical nature between the Client
and the Society can be submitted by theSociety to the advice of its
Marine Advisory Committee.
ARTICLE 1212.1. - Disputes over the Services carried out by
delegation of Governments are assessed within theframework of the
applicable agreements with the States, international Conventions
and national rules.
12.2. - Disputes arising out of the payment of the Society's
invoices by the Client are submitted to the Courtof Nanterre,
France.
12.3. - Other disputes over the present General Conditions or
over the Services of the Society areexclusively submitted to
arbitration, by three arbitrators, in London according to the
ArbitrationAct 1996 or any statutory modification or re-enactment
thereof. The contract between the Societyand the Client shall be
governed by English law.
ARTICLE 1313.1. - These General Conditions constitute the sole
contractual obligations binding together theSociety and the Client,
to the exclusion of all other representation, statements, terms,
conditionswhether express or implied. They may be varied in writing
by mutual agreement.13.2. - The invalidity of one or more
stipulations of the present General Conditions does not affect the
va-lidity of the remaining provisions.
13.3. - The definitions herein take precedence over any
definitions serving the same purpose which mayappear in other
documents issued by the Society.
BV Mod. Ad. ME 545 k - 17 December 2008
MARINE DIVISION
GENERAL CONDITIONS
-
July 2011
RULES FOR THE CLASSIFICATION OF SHIPS
Part EAdditional Class Notations
Chapters 1 2 3 4 5 6 7 8 9 10
Chapter 1 VeriSTAR SYSTEM (STAR) Chapter 2 AVAILABILITY OF
MACHINERY (AVM) Chapter 3 AUTOMATION SYSTEMS (AUT) Chapter 4
INTEGRATED SHIP SYSTEMS (SYS) Chapter 5 MONITORING EQUIPMENT (MON)
Chapter 6 COMFORT ON BOARD (COMF) Chapter 7 REFRIGERATING
INSTALLATIONS (REF) Chapter 8 ICE CLASS (ICE) Chapter 9 POLLUTION
PREVENTION (CLEANSHIP) Chapter 10 OTHER ADDITIONAL CLASS
NOTATIONS
-
2 Bureau Veritas July 2011
The English wording of these rules take precedence over
editionsin other languages.
Unless otherwise specified, these rules apply to ships for which
contracts aresigned after July 1st, 2011. The Society may refer to
the contents hereofbefore July 1st, 2011, as and when deemed
necessary or appropriate.
-
July 2011 Bureau Veritas 3
CHAPTER 6COMFORT ON BOARD (COMF)
Section 1 General Requirements1 General 21
1.1 Application1.2 Basic principles1.3 Regulations, Standards1.4
Definitions1.5 Document to be submitted
2 Conditions of attribution 222.1 Measurements2.2 Determination
of comfort rating number2.3 Measuring locations
3 Testing conditions 233.1 General3.2 Harbour test conditions3.3
Sea trial conditions
Section 2 Additional Requirements for Ships of Less than 65 m in
Length1 General 25
1.1 Application
2 COMF-NOISE 252.1 Measurement procedure2.2 Noise levels2.3
Sound insulation measurements
3 COMF-VIB 263.1 Measurement procedure3.2 Vibration levels
Section 3 Additional Requirements for Cargo Ships Greater than
or Equal to 65 m in Length
1 General 281.1 Application
2 COMF-NOISE 282.1 Measurement procedure2.2 Noise levels2.3
Sound insulation measurements
3 COMF-VIB 283.1 Measurement procedure3.2 Vibration levels
-
4 Bureau Veritas July 2011
Section 4 Additional Requirements for Passenger Ships Greater
than or Equal to 65 m in Length
1 General 311.1 Application
2 COMF-NOISE 312.1 Measurement procedure2.2 Noise levels2.3
Sound insulation measurements2.4 Impact measurements
3 COMF-VIB 333.1 Measurement procedure3.2 Vibration levels
Section 5 Additional Requirements for Yachts1 General 35
1.1 Application
2 COMF-NOISE 352.1 Measurement procedure2.2 Noise levels2.3
Sound insulation measurements2.4 Impact measurements
3 COMF-VIB 363.1 Measurement procedure3.2 Vibration levels
4 COMF + 374.1 Application4.2 Data processing - Analysis4.3
Measurement procedure4.4 COMF + Sound insulation index4.5 COMF +
Impact index4.6 COMF + Emergence4.7 COMF + intermittent noise4.8
COMF + intelligibility
-
July 2011 Bureau Veritas 5
CHAPTER 7REFRIGERATING INSTALLATIONS (REF)
Section 1 General Requirements 1 General 41
1.1 Application1.2 Temperature conditions1.3 Definitions
2 Design criteria 422.1 Reference conditions
3 Documentation 423.1 Refrigerating installations3.2 Controlled
atmosphere installations
4 General technical requirements 424.1 Refrigeration of
chambers4.2 Defrosting4.3 Prime movers and sources of power4.4
Pumps4.5 Sea connections 4.6 Refrigerating machinery spaces4.7
Exemptions for small plants4.8 Personnel safety
5 Refrigerated chambers 445.1 Construction of refrigerated
chambers 5.2 Penetrations5.3 Access to refrigerated spaces5.4
Insulation of refrigerated chambers 5.5 Protection of insulation5.6
Miscellaneous requirements 5.7 Installation of the insulation5.8
Drainage of refrigerated spaces
6 Refrigerants 466.1 General6.2 Rated working pressures
7 Refrigerating machinery and equipment 477.1 General
requirements for prime movers7.2 Common requirements for
compressors7.3 Reciprocating compressors7.4 Screw compressor
bearings7.5 Pressure vessels7.6 General requirements for piping7.7
Accessories7.8 Refrigerating plant overpressure protection
8 Specific requirements for direct and indirect refrigerating
systems 498.1 Specific requirements for refrigerating systems8.2
Specific requirements for air cooling systems and distribution and
renewal of air
in cargo spaces
-
6 Bureau Veritas July 2011
9 Instrumentation, alarm, monitoring 509.1 General9.2
Instrumentation, alarm and monitoring arrangement
10 Material tests, inspection and testing, certification 5110.1
Material testing10.2 Shop tests10.3 Pressure tests at the
workshop10.4 Thermometers and manometers10.5 Shipboard tests10.6
Defrosting system
Section 2 Additional Requirements for Notation REF-CARGO1
General 53
1.1 Application1.2 Refrigeration of cargo spaces1.3 Heating
2 Refrigerated cargo spaces 532.1 Insulation
3 Instrumentation 533.1 Thermometers in cargo spaces
4 Additional requirements for AIR-CONT notation 544.1 General4.2
Controlled atmosphere cargo spaces and adjacent spaces4.3 Gas
systems4.4 Miscellaneous equipment4.5 Gas detection and monitoring
equipment4.6 Instrumentation, alarm and monitoring arrangement4.7
Safety4.8 Tests and trials
5 Additional requirements for notations PRECOOLING and
QUICKFREEZE 595.1 General5.2 Shipboard tests
Section 3 Additional Requirements for Notation REF-CONT1 General
60
1.1 Application
2 Refrigerating plants supplying refrigerated air to containers
602.1 Definitions2.2 Cold distribution2.3 Equipment and systems2.4
Thermometers2.5 Workshop and shipboard inspections and tests2.6
Temperature measuring and recording devices2.7 Shipboard tests
-
July 2011 Bureau Veritas 7
3 Ships supplying electrical power to self-refrigerated
containers 633.1 Electrical equipment3.2 Installation of
containers
Section 4 Additional Requirements for Notation REF-STORE1
General 64
1.1 Application
-
8 Bureau Veritas July 2011
CHAPTER 8ICE CLASS (ICE)
Section 1 General1 General 67
1.1 Application1.2 Owners responsibility
2 Ice class draughts and ice thickness 672.1 Definitions2.2
Draught limitations in ice2.3 Ice thickness
3 Output of propulsion machinery 683.1 Required engine output
for ICE CLASS IA SUPER, ICE CLASS IA,
ICE CLASS IB and ICE CLASS IC
Section 2 Hull and Stability1 General 71
1.1 Application1.2 Hull regions1.3 Ice strengthened area
2 Structure design principles 722.1 General framing
arrangement2.2 Transverse framing arrangement2.3 Bilge keels
3 Design loads 733.1 General3.2 Ice loads
4 Hull scantlings 754.1 Plating4.2 Ordinary stiffeners4.3
Primary supporting members
5 Other structures 775.1 Application5.2 Fore part5.3 Aft part5.4
Deck strips and hatch covers5.5 Sidescuttles and freeing ports
6 Hull outfitting 786.1 Rudders and steering arrangements6.2
Bulwarks
-
July 2011 Bureau Veritas 9
Section 3 Machinery1 Requirements for propulsion machinery of
the class notation
ICE CLASS IA SUPER, ICE CLASS IA, ICE CLASS IB and ICE CLASS IC
801.1 Scope1.2 Design ice conditions1.3 Materials1.4 Design
loads1.5 Design1.6 Alternative design procedure
2 Requirements for propulsion machinery of ICE CLASS ID 892.1
Propulsion machinery performance2.2 Ice torque2.3 Propellers2.4
Shafting
3 Miscellaneous requirements 913.1 Sea inlets, ballast systems
and cooling water systems of machinery3.2 Steering gear3.3 Fire
pumps3.4 Transverse thrusters
-
10 Bureau Veritas July 2011
CHAPTER 9POLLUTION PREVENTION (CLEANSHIP)
Section 1 General Requirements1 Scope and application 95
1.1 General1.2 Applicable rules and regulations
2 Definitions and abbreviations 962.1 Definitions related to sea
pollution2.2 Definitions related to air pollution2.3
Abbreviations
3 Documents to be submitted and applicable standards 973.1
Documents to be submitted3.2 Modifications and additions
Section 2 Design Requirements for the Notations CLEANSHIP and
CLEANSHIP SUPER
1 General 1021.1 Application1.2 Documents to be submitted
2 Design requirements for the additional class notation
CLEANSHIP 1022.1 Waste management2.2 Oily wastes2.3 Wastewaters2.4
Garbage and hazardous wastes2.5 Hull antifouling systems2.6
Prevention of pollution by oil spillage and leakage2.7
Refrigeration systems2.8 Fire-fighting systems2.9 Emission of
nitrogen oxides (NOx)2.10 Emission of sulphur oxides (SOx)
3 Additional design requirements for the additional class
notation CLEANSHIP SUPER 1083.1 Waste minimization and recycling
program3.2 Protection against oil pollution in the event of
collision or grounding3.3 Prevention of air pollution3.4 Monitoring
and recording systems
Section 3 Design Requirements for the Pollution Prevention
Notations other than CLEANSHIP and CLEANSHIP SUPER
1 General 1091.1 Application1.2 Documents to be submitted
-
July 2011 Bureau Veritas 11
2 Additional class notation AWT 1092.1 Scope2.2 Definitions and
abbreviations2.3 Design of the AWT plant
3 Additional class notation BWE 1103.1 Scope3.2 Design
requirements
4 Additional class notation BWT 1104.1 Scope4.2 Design and
installation requirements
5 Additional class notation GWT 1105.1 Scope5.2 Design of the
grey water treatment plant
6 Additional class notation NDO-x days 1116.1 Scope6.2 Design
requirements
7 Additional class notation NOX-x% 1117.1 Scope7.2 Design
requirements
8 Additional class notation OWS-x ppm 1128.1 Scope8.2 Design
requirements
9 Additional class notation SOX-x% 1129.1 Scope9.2 Design
requirements
Section 4 Onboard Surveys1 Application 113
1.1
2 Periodical tests and measurements done by the shipowner 1132.1
General2.2 Initial period2.3 Periodical tests after first year of
service
3 Periodical surveys 1143.1 Initial survey3.2 Periodical
survey
-
12 Bureau Veritas July 2011
CHAPTER 10OTHER ADDITIONAL CLASS NOTATIONS
Section 1 Strengthened Bottom (STRENGTHBOTTOM)1 General 117
1.1 Application1.2 General bottom arrangement
2 Primary supporting members arrangement 1182.1 Ships with a
longitudinally framed bottom2.2 Ships with a transversely framed
bottom
3 Bottom scantlings 1183.1 Plating3.2 Ordinary stiffeners3.3
Primary supporting members
Section 2 Grab Loading (GRABLOADING)1 General 119
1.1 Application
2 Scantlings 1192.1 Inner bottom plating
Section 3 In-Water Survey Arrangements (INWATERSURVEY)1 General
120
1.1 Application1.2 Documentation to be submitted
2 Structure design principles 1202.1
3 Sea inlets and cooling water systems of machinery 1203.1
Section 4 Single Point Mooring (SPM)1 General 121
1.1 Application
2 Documentation 1212.1 Documentation for approval2.2
Documentation for information
-
July 2011 Bureau Veritas 13
3 General arrangement 1213.1 General provision3.2 Typical
layout3.3 Equipment
4 Number and safe working load of chain stoppers 1224.1
General
5 Mooring components 1225.1 Bow chain stopper5.2 Bow
fairleads5.3 Pedestal roller fairleads5.4 Winches or capstans
6 Supporting hull structures 1246.1 General
7 Strength criteria 1247.1 General
Section 5 Container Lashing Equipment (LASHING)1 General 125
1.1 Application1.2 Documents to be kept on board1.3
Materials
2 Arrangement of containers 1252.1 General2.2 Stowage in holds
using removable cell guides2.3 Stowage under deck without cell
guides2.4 Stowage on exposed deck 2.5 Uniform line load stowage on
deck or hatch covers
3 Procedure for the assignment of the notation 1283.1 Approval
of the mobile lashing equipment3.2 Type tests3.3 Inspection at
works of the mobile lashing equipment3.4 Reception on board of the
mobile lashing equipment
4 Forces applied to containers 1294.1 General4.2 Definitions4.3
Still water and inertial forces4.4 Wind forces4.5 Forces imposed by
lashing and securing arrangements4.6 Buoyancy force
5 Determination of loads in lashing equipment and in container
frames 1335.1 Calculation hypothesis5.2 Distribution of forces5.3
Containers only secured by locking devices5.4 Containers secured by
means of lashings or buttresses5.5 Stiffnesses
-
14 Bureau Veritas July 2011
6 Strength criteria 1346.1 Permissible loads on containers 6.2
Permissible loads induced by lashing on container corners 6.3
Permissible loads on lashing equipment 6.4 Permissible stresses on
cell guides
Section 6 Dynamic Positioning (DYNAPOS)1 General 136
1.1 Application1.2 Definitions1.3 Dynamic positioning
sub-systems1.4 Additional and optional class notation1.5
Installation survey during construction1.6 List of documents to be
submitted
2 Performance analysis 1372.1 General2.2 Condition of
analysis2.3 Modelling and simulations2.4 Risk analysis
3 Equipment class 1393.1 General3.2 Equipment class according to
single failure
4 Functional requirements 1394.1 General4.2 Power system4.3
Monitoring of the electricity production and propulsion4.4 Thruster
system4.5 Thruster control4.6 Thruster monitoring and protection4.7
DP Control system4.8 Computers
5 Position reference system 1435.1 General5.2 Arrangement and
performance of reference systems5.3 Type of position reference
system5.4 Other reference systems5.5 Vessel sensors
6 Installation requirements 1446.1 Cables and piping systems6.2
Thruster location
7 Operational requirements 1467.1 General
8 Tests and trials 1468.1 Inspection at works8.2 Trials
-
July 2011 Bureau Veritas 15
9 Environmental station keeping index ESKI 1469.1 Definition9.2
Environmental conditions9.3 Condition of ESKI estimation9.4
Documentation to be submitted and example
Section 7 Vapour Control System (VCS)1 General 148
1.1 Application1.2 Definitions1.3 Documentation to be
submitted
2 Vapour system 1482.1 General2.2 Vapour manifold2.3 Vapour
hoses2.4 Vapour overpressure and vacuum protection
3 Instrumentation 1513.1 Cargo tank gauging equipment3.2 Cargo
tank high level alarms3.3 Cargo tank overfill alarms3.4 High and
low vapour pressure alarms
4 Instruction manual 1514.1 General4.2 Content
5 Testing and trials 1525.1 5.2 Shipboard trials
6 Additional requirements for notation TRANSFER 1526.1
Application6.2 Equipment
Section 8 Cofferdam Ventilation (COVENT)1 General 153
1.1 Application1.2 Documents to be submitted
2 Design and construction 1532.1 Arrangement2.2 Other technical
requirements
3 Inspection and testing 1543.1 Equipment and systems3.2 Testing
on board
-
16 Bureau Veritas July 2011
Section 9 Centralised Cargo and Ballast Water Handling
Installations (CARGOCONTROL)
1 General 1551.1 Application1.2 Documents to be submitted
2 Design and construction requirements 1552.1 Control station2.2
Remote control, indication and alarm systems
3 Inspection and testing 1563.1 Equipment and systems3.2 Testing
on board
Section 10 Ship Manoeuvrability (MANOVR)1 General 157
1.1 Application1.2 Manoeuvre evaluation
2 Definitions 1572.1 Geometry of the ship2.2 Standard manoeuvres
and associated terminology
3 Requirements 1583.1 Foreword3.2 Conditions in which the
requirements apply3.3 Criteria for manoeuvrability evaluation
4 Additional considerations 1584.1 Trials in different
conditions4.2 Dynamic instability
Section 11 Cold Weather Conditions COLD (H tDH, E tDE)1 General
159
1.1 Application1.2 Documentation to be submitted1.3 Testing
2 Hull and stability 1602.1 Hull2.2 Stability
3 Machinery installations 1603.1 General3.2 Principles3.3 Design
requirements
4 Electrical installations 1624.1 General4.2 System design4.3
Protection
-
July 2011 Bureau Veritas 17
5 Additional requirements 1635.1 Special equipment
Section 12 Efficient Washing of Cargo Tanks (EWCT)1 General
164
1.1 Application1.2 Documents to be submitted
2 Design requirements 1642.1 Cargo tanks2.2 Cargo piping
system2.3 Cargo tank cleaning system
Section 13 Protected FO Tanks (PROTECTED FO TANKS)1 General
165
1.1 Application1.2 Definitions
2 Design requirements 1652.1 Distance from the bottom shell
plating2.2 Distance from the side shell plating2.3 Oil fuel piping
lines2.4 Suction wells
Section 14 Increased Admissible cargo Tank Pressure (IATP)1
Application 167
1.1 Ships covered by this section1.2 Scope
2 Documentation to be submitted 1672.1 Drawings and documents to
be submitted to the Society
3 Definitions 1673.1
4 General design requirements 1674.1 Ship design4.2 Cargo tanks
pressure relieving system4.3 Boil-off gas management system
5 Control, monitoring and safety systems 1685.1 Cargo tanks
pressure alarms5.2 Indication of the cargo tanks pressure
setting
6 Other 1696.1 Shop and gas trials6.2 Ship to ship transfer
-
18 Bureau Veritas July 2011
Section 15 Enhanced Fire Protection for Cargo Ships and Tankers
(EFP-AMC)1 General 170
1.1 Application
2 Protection of accommodation spaces (EFP-A) 1702.1
Application2.2 Prevention of fire2.3 Detection and alarm2.4
Containment of fire2.5 Escape
3 Protection of machinery spaces (EFP-M) 1713.1 Application3.2
Machinery spaces general arrangement3.3 Detection and alarm3.4
Ventilation system3.5 Local application system3.6 Escape3.7
Centralized fire control station
4 Protection of cargo decks and cargo spaces (EFP-C) 1714.1
Cargo ships4.2 Ro-ro cargo ships4.3 Oil tankers, FLS tankers and
chemical tankers4.4 Liquefied gas carriers
Section 16 SINGLEPASSLOADING1 General 174
1.1 Application1.2 Definitions
2 Documentation to be submitted 1742.1 Design loading rate2.2
Loading sequences2.3 Hold mass curves
3 Loading instrument and alternative loading 1753.1 Loading
instrument3.2 Alternative loading
4 Hull requirements 1754.1 General4.2 Hull structure4.3 Control
and monitoring
5 System requirements 1755.1 General5.2 Ballast piping5.3
Control and monitoring
-
Part EService Notations
Chapter 6
COMFORT ON BOARD (COMF)SECTION 1 GENERAL REQUIREMENTS
SECTION 2 ADDITIONAL REQUIREMENTS FOR SHIPS OF LESS THAN 65 M IN
LENGTH
SECTION 3 ADDITIONAL REQUIREMENTS FOR CARGO SHIPS GREATER THAN
OR EQUAL TO 65 M IN LENGTH
SECTION 4 ADDITIONAL REQUIREMENTS FOR PASSENGER SHIPS GREATER
THAN OR EQUAL TO 65 M IN LENGTH
SECTION 5 ADDITIONAL REQUIREMENTS FOR YACHTS
-
20 Bureau Veritas July 2011
Symbols used in this Chapter
NCR : Normal continuous rating of the propulsionMCR : Maximum
continuous rating of the propulsiondB : Decibel, unit of sound
pressure level compared
to the reference pressure level (2 10-5 Pa)dB(A) : (A) weighted
global value of the sound pressure
leveloctave band: Frequency space limited by a given
frequency
and twice this frequency. Third (1/3) octaveband corresponds to
a frequency space of 1/3octave. Octave and thirds bands used in
acous-tics are standard bands (IEC).
-
Pt E, Ch 6, Sec 1
July 2011 Bureau Veritas 21
SECTION 1 GENERAL REQUIREMENTS
1 General
1.1 Application
1.1.1 The additional class notation COMF is assigned,
inaccordance with Pt A, Ch 1, Sec 2, [6.7] to the
followingships:
Ships of less than 65 m in length between perpendicu-lars (such
as fishing ships, tugs, small passenger shipsexcluding yachts and
pleasure crafts)
Cargo ships of 65 m in length between perpendicularsand upward
(such as tankers, container ships, large fish-ing vessels...)
Passenger ships of 65 m in length between perpendicu-lars and
upward (such as cruise ships, ferries of 65 m inlength and
upward...)
Yachts.
The notation COMF is to be completed as follows:
COMF-NOISE x: Comfort with regard to noise criteriaapplicable to
specified ship category
with x = 1, 2 or 3, "1" corresponding to the most com-fortable
level for both passenger and crew spaces
COMF-VIB x: Comfort with regard to vibration criteriaapplicable
to specified ship category
with x = 1, 2 or 3, the overall frequency weighted
r.m.s.velocity criteria, "1" corresponding to the most comfort-able
level for both passenger and crew spaces, or
with x = 1PK, 2PK or 3PK, for the single amplitude peakvelocity
criteria, "1PK" corresponding to the most com-fortable level for
both passenger and crew spaces.
The requirements corresponding to those additional
classnotations are given in Ch 6, Sec 2 to Ch 6, Sec 5 for
eachconcerned ship type.
The assignment of COMF-NOISE and COMF-VIB can bedone separately
for passenger and crew spaces.
COMF Pax deals with passenger comfort:
COMF-NOISE-Pax x and COMF-VIB-Pax x may begranted accordingly
with different grades
COMF Crew deals with crew comfort:
COMF-NOISE-Crew x and COMF-VIB-Crew x may begranted accordingly
with different grades.
1.1.2 High speed crafts which do not have the same kind
ofbehaviour in the concerned fields (vibrations and noise) arenot
covered by these Rules.
1.2 Basic principles
1.2.1 Granting of the comfort grade is made on the basis
ofmeasurements performed by, or under supervision of anacoustic and
vibration specialist from the Society duringbuilding stage, sea
trials or in service. However, measure-ments may be performed by
another acoustic and vibrationspecialist from external company
provided that this special-ist has duly obtained the relevant
delegation from the Soci-ety.
1.2.2 These Rules take into account various
InternationalStandards, and are deemed to preserve their general
princi-ples.
1.3 Regulations, Standards
1.3.1 NoiseThe following standards refer to the edition in force
for thenoise
IMO Resolution A.468 (XII), "Code on noise levelsonboard
ships"
ISO 2923, "Acoustics - Measurements of noise on
boardvessels"
ISO 31/VII, "Quantities and units of acoustics"
IEC Publication 61672, "Electroacoustics-Sound levelmeters"
IEC Publication 61260, "Octave, half-octave and thirdoctave band
filters
IEC Publication 60942, "Electroacoustics - Sound
cali-brators"
ISO 140, "Acoustics - Measurements of sound insulationin
buildings and of building elements", namely:
- Part 4, "Field measurements of airborne sound insu-lation
between rooms"
- Part 7, "Field measurements of airborne impact insu-lation of
floors"
- Part 13, "Guidelines"
- Part 14, "Guidelines for special situation in the field"
ISO 717, "Acoustics - Rating of sound insulation inbuildings and
of building elements", namely:
- Part 1, "Airborne sound insulation in buildings andinterior
elements"
- Part 2, "Impact sound insulation"
IEC Publication 60268-16, "Sound system equipment -Part 16:
Objective rating of speech intelligibility byspeech transmission
index".
-
Pt E, Ch 6, Sec 1
22 Bureau Veritas July 2011
1.3.2 Vibration
The following standards refer to the edition in force for
thevibration
ISO 2041, "Vibration and shock - Vocabulary"
ISO 6954:1984, "Mechanical vibration and shock -Guidelines for
the overall evaluation of vibration in mer-chant ships"
ISO 6954:2000, "Mechanical vibration - Guidelines
formeasurements, reporting and evaluation of vibrationwith regard
to habitability on passenger and merchantships"
ISO 2631, "Mechanical vibration and shock- Evaluationof human
exposure to whole-body vibration"
ISO 8041, "Human response to vibration -
Measuringinstrumentation".
1.4 Definitions
1.4.1 In addition to the definitions given by IMO for crewspaces
and SOLAS for passenger spaces, the following defi-nitions are used
in the present Chapter for the concernedships:
Passenger public spaces
- Type A public space
closed rooms normally manned at sea or recrea-tional spaces
where noise is generally high (disco-theques)
- Type B public space
closed rooms permanently manned at sea wherenoise may be
moderately high (restaurants, bars,cinemas, casinos, lounges)
- Type C public space
closed rooms permanently manned at sea requiringrelatively low
background noise (lecture rooms,libraries, theatres)
- Type D public space
closed rooms intermittently used at sea or passageswhich do not
require very low background noise(halls, atriums, shops, corridors,
staircases, sportrooms, gymnasiums)
Passenger cabins
- Cabins are dealt with separately. Distinctionbetween passenger
cabins categories is to be madeon the basis of Owner's
specifications.
1.5 Document to be submitted
1.5.1 Prior to any sea trials, documents are to be submittedin
relation with ship categories listed in Tab 1.
Table 1 : Documents to be submitted
2 Conditions of attribution
2.1 Measurements
2.1.1 Measurements aiming at giving the comfort classnotation
have to be performed under the conditions speci-fied in [3].
2.1.2 Instrumentationa) General
Measurement and calibration equipments are to complywith ISO
2923, IEC 61672, IEC 61260 and IEC 60942for noise, and ISO 6954 and
ISO 8041 for vibration.
b) Noise measurements
The instrumentation has to be calibrated in situ, beforeand
after the tests.
c) Vibration measurements
The instrumentation has to include at least a
transducer(accelerometer or velocity transducer) with an
appropri-ate amplifier, and a FFT analyser. The instrumentationhas
to be calibrated in situ, before and after the tests.Should the
vibration measurements be performed on asoft floor, the use of a
tripod mount is recommended.
2.1.3 Data processing - Analysisa) For noise level
Results have to be given on a table in global values(dB(A)).
b) For vibration level
The criteria of vibration is to be expressed either interms of
overall frequency-weighted r.m.s. velocity(mm/s) from 1 to 80Hz as
defined by ISO 6954:2000, orsingle frequency amplitude peak
velocity from 1Hz to100Hz as defined by ISO 6954:1984 with a
conversionfactor CF = 1, wich leads to:
N0 A/I Document
1 I General arrangements
2 A List of measuring points: noise level at harbour conditions
(yacht only) noise level at sea conditions vibration level at sea
conditions insulation measurements impact measurements
3 A Measurement program: loading conditions propulsion operating
conditions other equipment to be run weather conditions measuring
instruments
A = to be submitted for approval I = to be submitted for
information
crest factor CF 2=
Maximum repetitive value 2 rms value=
-
Pt E, Ch 6, Sec 1
July 2011 Bureau Veritas 23
c) For sound insulation
Sound insulation measurement is to be carried outaccording to
ISO 140-4, ISO 140-13 and ISO 140-14.
d) For impact noise
Impact measurement is to be carried out according toISO 140-7
and ISO 140-13.
2.1.4 When it is not possible for the Society to follow or todo
all the required measurements, spot-check is to be per-formed by,
or under the supervision of the Society. Thisspot-check consists of
a cross-comparison between:
a sample of at least 10% of the measurements providedby the
shipyard/external specialist (see [2.1.4], Note 1),
and the corresponding readings obtained during thespot-check
measurements.
This procedure enables the validation of the entire set
ofmeasurements provided by the shipyard/external specialist.
Note 1: The maximum deviations allowed during the
cross-com-parison are 2 dB(A) for noise measurements and 0,5 mm/s
for vibra-tion measurements for both single amplitude peak velocity
andoverall frequency weighted rms readings.
2.2 Determination of comfort rating number
2.2.1 The notation is completed by a grade 1, 2 or 3
whichrepresents the comfort level achieved for the assignment ofthe
notation, the grade 1 corresponding to the most com-fortable
(highest) class notation.
Regarding vibration, the notation is completed either by agrade
1, 2 or 3 or by a grade 1PK, 2PK or 3PK according tothe vibration
criteria used for the assessment.
2.2.2 Measurements are to be carried out by or undersupervision
of the Society.
2.2.3 Levels are measured in several locations of eachspace of
the ship. The granted comfort class grade is givenon condition that
none of the measured levels exceeds thecorresponding requested
limits.
A tolerance on noise levels may be accepted but shall notexceed
the following maximum values:
3 dB(A) for 18% of all cabins and 5 dB(A) for 2% of allcabins
(with a minimum of 1 cabin).
3 dB(A) for 25% of measuring points and 5 dB(A) for 5%of
measuring points, in other spaces.
1 dB for 20% of apparent weighted sound reductionindexes R'w and
impact noise indexes L'n,w and 2 dBfor 10% of apparent weighted
sound reduction indexesR'w and impact noise indexes L'n,w (with a
minimumof 1 partition or floor).
A tolerance on vibration levels may be accepted but shallnot
exceed the following maximum values:
0,3 mm/s for 20% of measuring points in all passengerand crew
spaces for overall frequency weighted r.m.s.velocity criteria
0,5 mm/s for 20% of measuring points in all passengerand crew
spaces for single amplitude peak velocity cri-teria.
2.3 Measuring locations
2.3.1 The list of measuring points is to be prepared prior tothe
tests (see [1.5.1]). This list is to be approved by the Soci-ety
and may be adjusted during the tests. Measurementsmay be performed
in locations such as corridors, sanitaryspaces, when noise and
vibration levels subjectively seemexcessive.
3 Testing conditions
3.1 General
3.1.1 This Article gives the conditions to be fulfilled
duringmeasurements. Additional details of these conditions maybe
taken from International Standards, respectively:
IMO Resolution A.468 (XII), ISO 2923 for noise
ISO 6954 for vibrations.
3.1.2 Prior to the tests, possible divergence on the
requiredconditions may be accepted by the Society. If any, it is to
beclearly mentioned in the report.
3.1.3 The measurement program, has to be approvedbefore the
trials (see [1.5.1]). During the tests, some addi-tional
measurements may be decided upon request of theSociety.
3.1.4 During measurements, especially for noise, roomshave to be
preferably fully completed (outfitting, furniture,covering...).
Measurements may be performed even in anunfinished state, which
generally suppose better final results.
3.2 Harbour test conditions
3.2.1 Part of the noise measurement tests may be con-ducted at
quay or at anchorage (impact noises, determina-tion of insulation
indexes between rooms). For thesespecific tests, no particular
conditions concerning output,loading conditions, water depth,
weather conditions arerequired.
3.3 Sea trial conditions
3.3.1 During the sea trials, propeller output has to corre-spond
to the operating conditions specification of the ship.In
particular, ships which are frequently operated by meanof a Dynamic
Positioning system (DP system) may requireadditional measurements
to be performed in DP mode.
3.3.2 Any other frequently used equipment (more than 1/3of the
time at sea) is to be run at its normal operating condi-tions (If
practicable). The list of machine and equipment tobe run during the
tests is, at least, to include (if present) thefollowing:
generating sets
air conditioning and machinery ventilation
evaporators
anti rolling devices
compressors, chillers
cold rooms
-
Pt E, Ch 6, Sec 1
24 Bureau Veritas July 2011
waste treatment units
swimming pool with pumps
jacuzzi and thalassotherapy equipment
laundry with the entire equipment running: drying (spindryer or
tumble dryer) and washing machines (for meas-urements inside
laundry, equipment is to be stopped).
3.3.3 Standard test conditions correspond to the
loadingcondition defined for sea trials. Nevertheless, for
cargoships which are operated over a wide range of drafts,
thereadings may significantly differ from test condition toanother
loading condition. Should this particular caseoccur, additional
measurements may be required.
3.3.4 Tests have to be conducted in sea and weather condi-tion 3
or less. Measurements carried out with worst weatherconditions may
be accepted at the sight of the results.
3.3.5 The tests have to be performed in deep water, with awater
depth greater than 5 times the mean draft. However,for ships
usually operating in coastal waters, measurementsmay be taken with
conditions corresponding to normalservice conditions.
3.3.6 Ship course has to be kept constant, with rudderangle less
than 2 degrees portside or starboard, for the dura-tion of the
measurement. If ship manoeuvring is needed,measurements must be
stopped until recovery of heading.
-
Pt E, Ch 6, Sec 2
July 2011 Bureau Veritas 25
SECTION 2 ADDITIONAL REQUIREMENTS FOR SHIPS OF LESS THAN 65 M IN
LENGTH
1 General
1.1 Application
1.1.1 The requirements of this Section are applicable to
theassignment of the additional requirements for ships of lessthan
65 m in length. They are additional to the applicablerequirements
of Ch 6, Sec 1.
2 COMF-NOISE
2.1 Measurement procedure
2.1.1 Measuring conditions Tests have to be conducted in the
conditions described inCh 6, Sec 1, [3.3]. Air conditioning is to
be in normal oper-ation. Doors and windows have to be closed,
unless theyhave to be kept open in normal use.
It may happen that the measurements cannot be performedwith
machinery equipments, Hvac and machinery ventila-tion in normal
operation (as defined in Ch 6, Sec 1, [3.3]).In such case,
additional measurements should be done atquay and taken into
account in the final results.
2.1.2 Measuring positionsa) Noise measurements
Measurements are to be taken at a height between 1,2and 1,6 m
from the deck and at a distance above 1,0 mfrom any boundary
surface of the room. In cabins andoffices, one measurement will be
performed in the mid-dle of the space. Additional measurements
should beperformed in other locations if appreciable sound
leveldifferences inside the room occur.
On open deck, measurements are to be taken at 2 m atleast from
the existing noise sources (e.g. inlet/outlet ofventilation).
Noise is to be measured in all accommodation spaces(cabins, mess
rooms, offices) in the navigation bridgeand in the engine control
room, if any. On passengerships having relatively large public
rooms (salons or res-taurants), noise measurements are to be
carried out indifferent locations (to get a representative
description ofthe noise), each measuring points covering less
than20 m2.
b) Sound insulation measurements
The selection of insulation measuring locations is to
berepresentative of the different types of insulation pro-vided in
Tab 2 and Tab 3 (a minimum of one measure-ment of each type is
required).
2.2 Noise levels
2.2.1 Noise levels in standard spaces defined in Ch 6, Sec1,
[1.4] and corresponding to the noise grade x are pro-vided in Tab
1.
Noise levels described in IMO Resolution A.468 (XII)
areapplicable for all locations unlisted in Tab 1.
2.3 Sound insulation measurements
2.3.1 Between two adjacent accommodation spaces,acoustic
insulation has to satisfy the requirements given inTab 2 and Tab 3.
Measurements are to be performed in situ,ship at quay or at
anchorage.
Table 1 : Noise levels
Noise levels, in dB (A)
Locations (1) grade = 1 grade = 2 grade = 3
Wheelhouse 63 64 65
Passenger Cabins 50 54 58
Crew Cabins 55 58 60
Public spaces (type B), mess rooms 60 63 65
Passages and type D spaces 65 68 72
Engine control room 74 77 80
Open public areas 70 73 75
Other workspaces IMO resolution A 468 (XII)
(1) For the meaning of public room type A to type D, refer to Ch
6, Sec 1, [1.3.1]
-
Pt E, Ch 6, Sec 2
26 Bureau Veritas July 2011
Table 2 : Apparent weighted sound reduction indexes Rw in dB for
passenger areas
Table 3 : Apparent weighted sound reduction indexes Rw in dB for
crew areas
3 COMF-VIB
3.1 Measurement procedure
3.1.1 Measuring conditionsTests are to be conducted under the
conditions described inCh 6, Sec 1, [3.3].
3.1.2 Measuring positionsMeasurements are to be taken in
vertical direction. In cab-ins, offices or other small size rooms,
measurements are tobe taken on the floor in the centre of the room.
For largerrooms, several measuring points may be required and are
tobe chosen according to the local structure (measurementsof the
different existing types of stiffened panels).
Vibrations are to be measured in all accommodation
spaces(cabins, mess rooms, offices) in the navigation bridge and
inthe engine control room, if any. On passenger ships
havingrelatively large public rooms (salons or restaurants),
vibra-tion measurements are to be carried out in different
loca-tions (to get a representative description of the
vibration),each measuring points covering less than 20 m2.
In addition to vertical direction, measurements in transverseand
longitudinal directions are to be performed on onepoint of each
deck.
3.2 Vibration levels
3.2.1 Vibration levels corresponding to the grade x are
pro-vided in Tab 4 in accordance to ISO 6954 - 2000 (the
limitslisted below are applicable for any directions).
3.2.2 Vibration levels corresponding to the grade x are
pro-vided in Tab 5 and Tab 6 in accordance to ISO 6954 - 1984(the
limits listed below are applicable for any directions).
Table 4 : Overall frequency weighted r.m.s. vibration levels
Table 5 : Single amplitude peak vibration levels from 5 Hz to
100 Hz
Locations grade = 1 grade = 2 grade = 3
Cabin to cabin 40 38 36
Corridor to cabin 38 36 34
Stairs to cabin 50 50 50
Public spaces to cabin 53 50 48
Locations grade = 1 grade = 2 grade = 3
Cabin to cabin 37 33 30
Corridor to cabin 35 32 30
Stairs to cabin 35 32 30
Public spaces to cabin 45 45 45
Vibration velocity (mm/s) values from 1 Hz to 80 Hz
Locations grade = 1 grade = 2 grade = 3
Wheelhouse 3,5 4 4,5
Passenger Cabins3 3,5 4
Crew Cabins
Public spaces (type B), mess rooms (1)3 4 5
Passages and type D spaces (1)
Engine control room 4 6 6
Open public areas 4 6 6
Other workspaces 4 6 6
(1) For the definition of type A to type D public spaces, refer
to Ch 6, Sec 1, [1.4.1].
Vibration velocity (mm/s peak) values from 5 Hz to 100 Hz
Locations grade = 1PK grade = 2PK grade = 3PK
Wheelhouse 3 4 5
Passenger Cabins2 2,5 3
Crew Cabins
Public spaces (type B) , mess rooms (1)3 3,5 4
Passages and type D spaces (1)
Engine control room 4 5 6
Open public areas 4 5 6
Other workspaces 4 5 6
(1) For the definition of type A to type D public spaces, refer
to Ch 6, Sec 1, [1.4.1].
-
Pt E, Ch 6, Sec 2
July 2011 Bureau Veritas 27
Table 6 : Single amplitude peak vibration levels from 1 Hz to 5
Hz
Acceleration (mm/s2 peak) values from 1 Hz to 5 Hz
Locations grade = 1PK grade = 2PK grade = 3PK
Wheelhouse 96 125 157
Passenger Cabins64 80 96
Crew Cabins
Public spaces (type B), mess rooms (1)96 111 125
Passages and type D spaces (1)
Engine control room 125 157 188
Open public areas 125 157 188
Other workspaces 125 157 188
(1) For the definition of type A to type D public spaces, refer
to Ch 6, Sec 1, [1.4.1].
-
Pt E, Ch 6, Sec 3
28 Bureau Veritas July 2011
SECTION 3 ADDITIONAL REQUIREMENTS FOR CARGO SHIPS GREATER THAN
OR EQUAL TO 65 M IN LENGTH
1 General
1.1 Application
1.1.1 The requirements of this Section are applicable to
theassignment of the additional requirements for cargo shipsgreater
than or equal to 65 m in length. They are additionalto the
applicable requirements of Ch 6, Sec 1.
2 COMF-NOISE
2.1 Measurement procedure
2.1.1 Measuring conditions
Tests are to be conducted in the conditions described in Ch6,
Sec 1, [3.3]. Air conditioning is to be in normal opera-tion. Doors
and windows are to be closed, unless they areto be kept open in
normal use.
It may happen that the measurements cannot be performedwith
machinery equipments, Hvac and machinery ventila-tion in normal
operation (as defined in Ch 6, Sec 1, [3.3]).In such case,
additional measurements should be done atquay and taken into
account in the final results.
2.1.2 Measuring positions
a) Noise measurements
Measurement are to be taken at a height between 1,2and 1,6 m
from the deck and at a distance above 1,0 mfrom any boundary
surface of the room. In cabins andoffices, one measurement will be
performed in the mid-dle of the space. Additional measurements
should beperformed in other locations if appreciable sound
leveldifferences inside the room occur.
On open deck, measurements are to be taken at 2 m atleast from
the existing noise sources (e.g. inlet/outlet ofventilation).
In the areas corresponding to Navigation spaces, Ser-vice spaces
and Work spaces as described in IMOResolution A.468 (XII),
measurements are to be taken oneach deck, with three measuring
points in the naviga-tion bridge deck (centre line and both sides).
In addi-tion, measurements are to be carried out in a minimumof 60%
of the rooms on each cabins deck (includinghospital). When the
engine casing is integrated in the
accommodation area, noise levels are to be measuredin each
adjacent room. For large rooms exceeding20 m2 (mess rooms,
recreation rooms...), noise measure-ments are to be performed every
20 m2.
b) Sound insulation measurements
The selection of insulation measuring locations is to
berepresentative of the different types of insulation pro-vided in
Tab 1 (a minimum of one measurement of eachtype is required).
2.2 Noise levels
2.2.1 Noise levels in standard spaces defined in Ch 6, Sec1,
[1.4] and corresponding to the noise grade x are pro-vided in Tab
2.
Noise levels described in IMO Resolution A.468 (XII)
areapplicable for all locations unlisted in Tab 2.
2.3 Sound insulation measurements
2.3.1 Between two adjacent accommodation spaces,acoustic
insulation is to satisfy the requirements given inTab 1.
Measurements are to be performed in situ, ship atquay or at
anchorage.
Table 1 : Apparent weighted sound reduction indexes Rw in dB for
crew areas
3 COMF-VIB
3.1 Measurement procedure
3.1.1 Measuring conditions
Tests are to be conducted under the conditions described inCh 6,
Sec 1, [3.3].
Locations grade = 1 grade = 2 grade = 3
Cabin to cabin 37 33 30
Corridor to cabin 35 32 30
Stairs to cabin 35 32 30
Public spaces to cabin 45 45 45
-
Pt E, Ch 6, Sec 3
July 2011 Bureau Veritas 29
Table 2 : Noise levels
3.1.2 Measuring positions
Measurements are to be taken in vertical direction. In cab-ins,
offices or other small size rooms, measurements are tobe taken on
the floor in the centre of the room. For largerrooms, several
measuring points may be required and are tobe chosen according to
the local structure (measurementsof the different existing types of
stiffened panels).
In the areas corresponding to Navigation spaces, Servicespaces
and Work spaces, measurements are to be takenon each deck, with
three measuring points in the navigationbridge deck (centre line
and both sides). In addition, mea-surements are to be carried out
in a minimum of 60% of therooms on each cabins deck (including
hospital).
In addition to vertical direction, measurements in transverseand
longitudinal directions are to be performed on onepoint on each
deck.
3.2 Vibration levels
3.2.1 Vibration levels corresponding to the vibration gradex are
provided in Tab 3 in accordance to ISO 6954 - 2000(the limits
listed below are applicable for any directions).
3.2.2 Vibration levels corresponding to the vibration gradex are
provided in Tab 4 and Tab 5 in accordance to ISO6954 - 1984 (the
limits listed below are applicable for anydirections).
Table 3 : Overall frequency weighted r.m.s vibration levels
Noise levels, in dB (A)
Locations grade = 1 grade = 2 grade = 3
Wheelhouse 60 63 65
Radio room (1) 55 57 60
Cabins 52 55 60
Offices 57 60 65
Public spaces, mess rooms 57 60 65
Hospital 55 58 60
Engine control room (2) 70 73 75
Open recreation areas (3) 70 73 75
Galleys (2) 70 73 76
Workshops (2) 85 85 85
Alleyways, staircases and passages in crew areas 70 73 75
(1) Equipment switched on but not emitting.(2) Equipment
switched on but not processing.(3) Measurement carried out with 3
Beaufort or less, with a windscreen microphone protection
Vibration velocity (mm/s) values from 1 Hz to 80 Hz
Locations grade = 1 grade = 2 grade = 3
Wheelhouse3,0 3,3 3,5
Radio room
Cabins 2,8 3,0 3,2
Offices 3,0 3,5 4,0
Public spaces, mess rooms 3,0 3,5 4,0
Hospital 2,8 3,0 3,2
Engine control room 4,0 5,0 6,0
Open recreation areas
Galleys5,0 5,5 6,0
Workspaces
Alleyways, staircases and passages in crew areas 5,0 5,5 6,0
-
Pt E, Ch 6, Sec 3
30 Bureau Veritas July 2011
Table 4 : Single amplitude peak vibration levels from 5 Hz to
100 Hz
Table 5 : Single amplitude peak vibration levels from 1 Hz to 5
Hz
Vibration velocity (mm/s peak) values from 5 Hz to 100 Hz
Locations grade = 1PK grade = 2PK grade = 3PK
Wheelhouse2,0 3,0 4,0
Radio room
Cabins 3,0 3,5 4,0
Offices 3,0 4,0 5,0
Public spaces, mess rooms 3,0 3,5 4,0
Hospital 2,0 3,0 4,0
Engine control room 4,0 4,5 5,0
Open recreation areas
Galleys5,0 5,5 6,0
Workspaces
Alleyways, staircases and passages in crew areas 5,0 5,5 6,0
Acceleration (mm/s2 peak) values from 1 Hz to 5 Hz
Locations grade = 1PK grade = 2PK grade = 3PK
Wheelhouse64 96 125
Radio room
Cabins 96 111 125
Offices 96 125 157
Public spaces, mess rooms 96 111 125
Hospital 64 96 125
Engine control room 125 141 157
Open recreation areas
Galleys157 172 188
Workspaces
Alleyways, staircases and passages in crew areas 157 172 188
-
Pt E, Ch 6, Sec 4
July 2011 Bureau Veritas 31
SECTION 4 ADDITIONAL REQUIREMENTS FOR PASSENGER SHIPS GREATER
THAN OR EQUAL TO 65 M IN LENGTH
1 General
1.1 Application
1.1.1 The requirements of this Section are applicable to
theassignment of the additional requirements for passengerships
greater than or equal to 65 m in length. They are addi-tional to
the applicable requirements of Ch 6, Sec 1.
2 COMF-NOISE
2.1 Measurement procedure
2.1.1 Measuring conditionsTests have to be conducted in the
conditions described inCh 6, Sec 1, [3.3]. Air conditioning is to
be in normal oper-ation. Doors and windows have to be closed,
unless theyhave to be kept open in normal use.
It may happen that the measurements cannot be performedwith
machinery equipments, Hvac and machinery ventila-tion in normal
operation (as defined in Ch 6, Sec 1, [3.3]).In such case,
additional measurements should be done atquay and taken into
account in the final results.
2.1.2 Measuring positionsa) Noise measurements
Measurements are to be taken at a height between 1,2and 1,6 m
from the deck and at a distance above 1,0 mfrom any boundary
surface of the room. In cabins andoffices, one measurement will be
performed in the mid-dle of the space. Additional measurements
should beperformed in other locations if appreciable sound
leveldifferences inside the room occur.
On open decks, measurements are to be taken at 2 m atleast from
the existing noise sources (e.g. inlet/outlet ofventilation).
In cabins, measurements are to be carried out at thecentre of
the cabin.
In order to define the location and number of measuringpoints,
the length of the ship is divided in two parts:
From the aft part of the ship to the front bulkhead ofthe
casing:
- minimum of 35% of cabins,
- all public spaces and open decks.
For large public rooms (lounges, restaurants) mea-surements are
to be carried out in different loca-tions, each measuring point
covering less than 50m2.
From the front bulkhead of the casing to the fore endof the
ship:
- minimum of 15% of cabins,
- all public spaces and open decks.
For large public rooms (lounges, restaurants) mea-surements are
to be carried out in different loca-tions, each measuring point
covering less than100m2.
Note 1: The Society may accept a lower number of measuringpoints
or a modification of the points distribution for specificcases.
b) Sound insulation measurements
The selection of insulation measuring locations is to
berepresentative of the different types of insulation pro-vided in
Tab 1 and Tab 2 (a minimum of two measure-ments of each type is
required).
c) Impact measurements
The selection of impact measuring locations is to be
rep-resentative of the different deck coverings implementedon the
ship (a minimum of two measurements of eachdeck covering is
required).
2.2 Noise levels
2.2.1 Noise levels in standard spaces defined in Ch 6, Sec1,
[1.4] and corresponding to the noise grade x are pro-vided in Tab
3.
Noise levels described in IMO Resolution A.468 (XII)
areapplicable for all locations unlisted in Tab 3.
2.3 Sound insulation measurements
2.3.1 Between two adjacent accommodation spaces,acoustic
insulation has to satisfy the requirements given inTab 1 and Tab 2.
Measurements are to be performed in situ,ship at quay or at
anchorage.
2.4 Impact measurements
2.4.1 A weighted normalised impact sound pressure levelLn,w is
to be kept below 50 dB for the cabins. It is to beincreased to 60
dB for cabins below decks covered withhard materials (wood, marble,
tiles, etc). For cabins locatedbelow sport rooms or dance floors,
this value is to be keptbelow 45 dB.
-
Pt E, Ch 6, Sec 4
32 Bureau Veritas July 2011
Table 1 : Apparent weighted sound reduction indexes Rw in dB for
passenger areas
Table 2 : Apparent weighted sound reduction indexes Rw in dB for
crew areas
Table 3 : Noise levels
Locations grade = 1 grade = 2 grade = 3
Cabin to cabin (top level) 45 42 40
Cabin to cabin (standard) 41 38 36
Cabin to cabin with communication door (standard) 40 37 35
Corridor to cabin (top level) 42 40 37
Corridor to cabin 38 36 34
Stairs to cabin 48 45 45
Public spaces to cabin 53 50 48
Discotheques and show rooms to cabin 64 62 60
Locations grade = 1 grade = 2 grade = 3
Cabin to cabin 37 33 30
Corridor to cabin 35 32 30
Stairs to cabin 35 32 30
Public spaces, mess to cabin 45 45 45
Noise levels, in dB (A)
Locations (1) grade = 1 grade = 2 grade = 3
Passenger top level cabins 45 47 50
Passenger standard cabins 49 53 56
Restaurants, cafeterias and type B spaces (1) 55 58 62
Public shop, passages (type D) (1) 60 63 65
Passenger spaces (type A) (1) 65 68 72
Passenger spaces (type C) (1) 53 56 59
Outside installations (swimming pools, sport decks...) (2) (4)
65 70 75
Wheelhouse 60 63 65
Radio room (3) 55 57 60
Crew Cabins 52 55 60
Offices 57 60 63
Crew public spaces, mess rooms 57 60 63
Hospital 55 57 60
Engine control room (3) 70 73 75
Crew open recreation areas (2) 70 73 75
Galleys (2) 70 73 76
Workshops (2) 85 85 85
Alleyways, staircases and passages in crew areas 70 73 75
(1) For the definition of type A to type D public spaces, refer
to Ch 6, Sec 1, [1.3.1].(2) A tolerance of 5 dB (A) may be accepted
for measurements at less than 3 m from ventilation inlet/outlet.
(3) Equipment switched on but not processing.(4) Measurement
carried out with 3 Beaufort or less, with a windscreen microphone
protection.
-
Pt E, Ch 6, Sec 4
July 2011 Bureau Veritas 33
3 COMF-VIB
3.1 Measurement procedure
3.1.1 Measuring conditionsTests are to be conducted under the
conditions described inCh 6, Sec 1, [3.3].
3.1.2 Measuring positionsMeasurements are to be taken in
vertical direction. In cab-ins, offices or other small size rooms,
measurements are tobe taken on the floor in the centre of the room.
For largerrooms, several measuring points may be required and are
tobe chosen according to the local structure (measurementsof the
different existing types of stiffened panels).
In cabins, the measurements are to be carried out at thecentre
of the cabin.
In order to define the location and number of measuringpoints,
the length of the ship is divided in two parts:
From the aft part of the ship to the front bulkhead of
thecasing:
- minimum of 20% of cabins,
- all public spaces and open decks.
For large public rooms (lounges, restaurants) mea-surements are
to be carried out in different locations,each measuring point
covering less than 50 m2.
From the front bulkhead of the casing to the fore end ofthe
ship:
- minimum of 10% of cabins,
- all public spaces and open decks.
For large public rooms (lounges, restaurants) mea-surements are
to be carried out in different locations,each measuring point
covering less than 100 m2.
Note 1: The Society may accept a lower number of measuringpoints
or a modification of the points distribution for specific
cases.
In addition to vertical direction, measurements in transverseand
longitudinal directions are to be performed every 3decks, with one
measuring point in the fore part of the ship,one in the middle part
and one in the aft part.
3.2 Vibration levels
3.2.1 Vibration levels corresponding to the vibration gradex are
provided in Tab 4 in accordance to ISO 6954 - 2000(the limits
listed below are applicable for any directions).
3.2.2 Vibration levels corresponding to the vibration gradex are
provided in Tab 5 and Tab 6 in accordance to ISO6954 -1984 (the
limits listed below are applicable for anydirections).
Table 4 : Overall frequency weighted r.m.s. vibration levels
Vibration velocity (mm/s) values from 1 Hz to 80 Hz
Locations grade = 1 grade = 2 grade = 3
Passenger top level cabins 1,7 2 2,2
Passenger standard cabins 2,0 2,5 3,0
Restaurants, cafeterias and type B spaces (1) 2,2 2,5 3,0
Public shops, passages (type D) (1)4,0 4,5 5,0
Passenger spaces (type A) (1)
Passenger spaces (type C) (1) 2,0 2,5 3,0
Outside installations (swimming pools, sport decks ...) 3,0 3,5
4,0
Wheelhouse2,8 3,0 3,2
Radio room
Crew Cabins 2,8 3,0 3,2
Offices 3,0 3,5 4,0
Crew public spaces, mess rooms 3,0 3,5 4,0
Hospital 2,8 3,0 3,0
Engine control room 4,0 5,0 6,0
Crew open recreation areas
Galleys5,0 5,5 6,0
Workspaces
Alleyways, staircases and passages in crew areas 5,0 5,5 6,0
(1) For the definition of type A to type D public spaces, refer
to Ch 6, Sec 1, [1.3.1].
-
Pt E, Ch 6, Sec 4
34 Bureau Veritas July 2011
Table 5 : Single amplitude peak vibration levels from 5 Hz to
100 Hz
Table 6 : Single amplitude peak vibration levels from 1 Hz to 5
Hz
Vibration velocity (mm/s peak) values from 5 Hz to 100 Hz
Locations grade = 1PK grade = 2PK grade = 3PK
Passenger top level cabins 1,5 2,0 2,5
Passenger standard cabins 2,0 2,5 3,0
Restaurants, cafeterias and type B spaces (1) 2,5 3,0 3,5
Public shops, passages (type D) (1)4,0 4,0 4,0
Passenger spaces (type A) (1)
Passenger spaces (type C) (1) 2,0 2,5 3,0
Outside installations (swimming pools, sport decks ...) 3,0 4,0
4,0
Wheelhouse2,0 3,0 4,0
Radio room
Crew Cabins 3,0 3,5 4,0
Offices 3,0 4,0 5,0
Crew public spaces, mess rooms 3,0 3,5 4,0
Hospital 2,0 3,0 4,0
Engine control room 4,0 4,5 5,0
Crew open recreation areas
Galleys5,0 5,5 6,0
Workspaces
Alleyways, staircases and passages in crew areas 5,0 5,5 6,0
(1) For the definition of type A to type D public spaces, refer
to Ch 6, Sec 1, [1.3.1].
Acceleration (mm/s2 peak) values from 1 Hz to 5 Hz
Locations grade = 1PK grade = 2PK grade = 3PK
Passenger top level cabins 48 64 80
Passenger standard cabins 64 80 96
Restaurants, cafeterias and type B spaces (1) 80 96 111
Public shops, passages (type D) (1)125 125 125
Passenger spaces (type A) (1)
Passenger spaces (type C) (1) 64 80 96
Outside installations (swimming pools, sport decks ...) 96 125
125
Wheelhouse96 103 111
Radio room
Crew Cabins 89 96 100
Offices 96 111 125
Crew public spaces, mess rooms 96 111 125
Hospital 89 96 96
Engine control room 125 141 157
Crew open recreation areas
Galleys157 172 188
Workspaces
Alleyways, staircases and passages in crew areas 157 172 188
(1) xxFor the definition of type A to type D public spaces,
refer to Ch 6, Sec 1, [1.3.1].
-
Pt E, Ch 6, Sec 5
July 2011 Bureau Veritas 35
SECTION 5 ADDITIONAL REQUIREMENTS FOR YACHTS
1 General
1.1 Application
1.1.1 The requirements of this Section are applicable to
theassignment of the additional requirements for yachts. Theyare
additional to the applicable requirements of Ch 6, Sec 1.
2 COMF-NOISE
2.1 Measurement procedure
2.1.1 Measuring conditionsFor noise level measurements in
harbour conditions,machinery and chiller should be run under normal
harbourcondition. Hvac and machinery ventilation must be in
oper-ation and at nominal rate all over the ship.
Tests in sea trial conditions are to be conducted in the
con-ditions described in Ch 6, Sec 1, [3.3]. Air conditioning is
tobe in normal operation. Doors and windows are to beclosed, unless
they are to be kept open in normal use.
It may happen that the measurements cannot be performedwith
machinery equipments, Hvac and machinery ventila-tion in normal
operation (as defined in Ch 6, Sec 1, [3.3]).In such case,
additional measurements should be done atquay and taken into
account in the final results.
2.1.2 Measuring positionsa) Noise measurements
Measurements are to be taken at a height between 1,2and 1,6 m
from the deck and at a distance above 1,0 mfrom any boundary
surface of the room. In cabins andoffices, one measurement will be
performed in the mid-dle of the space. Additional measurements
should beperformed in other locations if appreciable sound
leveldifferences inside the room occur.
On open deck, measurements are to be taken at 2 m atleast from
the existing noise sources (e.g. inlet/outlet ofventilation).
The noise measurements are to be performed in all pas-senger
spaces, each measuring point covering less than15 m2.
b) Sound insulation measurements The selection of insulation
measuring locations is to berepresentative of the different types
of insulation pro-vided in Tab 1 (a minimum of two measurements
ofeach type is required).
c) Impact measurementsThe selection of impact measuring
locations is to be rep-resentative of the different deck coverings
implementedon the ship (a minimum of two measurements of eachdeck
covering is required).
2.2 Noise levels
2.2.1 Noise levels in standard spaces defined in Ch 6, Sec
1,[1.3] and corresponding to the noise grade x are provided inTab
2.Noise levels described in IMO Resolution A.468 (XII)
areapplicable for all locations unlisted in Tab 2.
2.3 Sound insulation measurements2.3.1 Between two adjacent
accommodation spaces,acoustic insulation has to satisfy the
requirements given inTab 1. Measurements are to be performed in
situ, ship atquay or at anchorage. Table 1 : Apparent weighted
sound reduction indexes
Rw in dB
Table 2 : Owner and guest area
Locations grade = 1 grade = 2 grade = 3
Cabin to cabin 45 42 40
Corridor to cabin 42 40 37
Stairs to cabin 50 48 45
Public spaces to cabin 55 53 50
Public spaces designed for loud music to cabin
63 60 58
Noise levels, in dB (A)
LocationsHarbour Sea
grade = 1 grade = 2 grade = 3 grade = 1 grade = 2 grade = 3
Wheelhouse 65 65 65
Cabins 40 45 50 50 55 60
Lounges 45 50 55 55 58 62
Open recreation areas (1) 55 60 65 75 80 85
(1) Measurement carried out with 3 Beaufort or less, with a
windscreen microphone protection
-
Pt E, Ch 6, Sec 5
36 Bureau Veritas July 2011
2.4 Impact measurements
2.4.1 A weighted normalised impact sound pressure levelLn,w is
to be kept below 50 dB for the cabins. It is to beincreased to 60
dB for cabins below decks covered withhard materials (wood, marble,
tiles, etc). For cabins locatedbelow sport rooms or dance floors,
this value is to be keptbelow 45 dB.
3 COMF-VIB
3.1 Measurement procedure
3.1.1 Measuring conditionsTests are to be conducted under the
conditions described inCh 6, Sec 1, [3.3].
3.1.2 Measuring positionsMeasurements are to be taken in
vertical direction. In cab-ins, offices or other small size rooms,
measurements are tobe taken on the floor in the centre of the room.
For larger
rooms, several measuring points may be required and are tobe
chosen according to the local structure (measurementsof the
different existing types of stiffened panels).
Measurements are to be performed in all passenger spaces,each
measuring point covering less than 15 m2.
In addition to vertical direction, measurements in transverseand
longitudinal directions are to be performed on onepoint on each
deck.
3.2 Vibration levels
3.2.1 Vibration levels corresponding to the vibration gradex are
provided in Tab 3 in accordance to ISO 6954 - 2000(the limits
listed below are applicable for any directions).
3.2.2 Vibration levels corresponding to the vibration gradex are
provided in Tab 4 and Tab 5 in accordance to ISO6954 - 1984 (the
limits listed below are applicable for anydirections).
Table 3 : Overall frequency weighted r.m.s vibration levels
Table 4 : Single amplitude peak vibration levels from 5 Hz to
100 Hz
Table 5 : Single amplitude peak vibration levels from 1 Hz to 5
Hz
Vibration velocity (mm/s) values from 1 Hz to 80 Hz
LocationsHarbour Sea
grade = 1 grade = 2 grade = 3 grade = 1 grade = 2 grade = 3
Wheelhouse 2,5 3,5 4,5
Cabins 1,0 1,5 2,0 2,0 2,5 3,0
Lounges 1,0 1,5 2,0 2,0 2,5 3,0
Open recreation areas 2,0 3,0 3,5 3,0 4,0 4,5
Vibration velocity (mm/s peak) values from 5 Hz to 100 Hz
LocationsHarbour Sea
grade = 1PK grade = 2PK grade = 3PK grade = 1PK grade = 2PK
grade = 3PK
Wheelhouse 2,5 3,5 5
Cabins 1,0 1,5 2,5 3,0 3,5 4,0
Lounges 1,0 1,5 2,5 3,0 3,5 4,0
Open recreation areas 2,0 3,0 4,0 3,5 4,5 5,0
Acceleration (mm/s2 peak) values from 1 Hz to 5 Hz
LocationsHarbour Sea
grade = 1PK grade = 2PK grade = 3PK grade = 1PK grade = 2PK
grade = 3PK
Wheelhouse 80 111 157
Cabins 32 48 78 64 96 125
Lounges 32 48 78 64 80 125
Open recreation areas 64 48 125 80 125 157
-
Pt E, Ch 6, Sec 5
July 2011 Bureau Veritas 37
4 COMF +
4.1 Application
4.1.1 Optional COMF + notation represents an advancedcomfort
rating with additional performance index require-ments.
Note 1: The present Article may also be applied, after special
study,to passenger ships.
4.1.2 Prior to the COMF+ notation assessment, COMF-NOISE
notation is to be granted.
4.1.3 The following COMF+ performance indexes can begranted
separately:
COMF+ Sound insulation index
COMF+ Impact index
COMF+ Emergence
COMF+ Intermittent noise
COMF+ Intelligibility.
4.2 Data processing - Analysis
4.2.1 Results are to be given on a table in global values(dB(A)
or dB for insulation measurements).
4.3 Measurement procedure
4.3.1 Measuring conditionsTests are to be conducted in the
conditions described in Ch 6,Sec 1, [3.3] and [2.1.1].
Specific additional conditions are described in the
relevantCOMF+ index requirements.
4.3.2 Measuring positionsThe location of the measuring positions
is selected in accor-dance with [2.1.2] for the following
indexes:
COMF+ Sound insulation index
COMF+ Impact index
COMF+ Emergence.
4.4 COMF + Sound insulation index
4.4.1 Sound insulation between discotheques, show lounge and
passenger cabins
Due to the potential low frequency noise, transmittedthrough
floors or bulkheads, the sound insulation indexrequirement is to be
considered as the sum of the R'w index+ the adaptation term C as
described in ISO 717-1.
The adaptation term C added to the R'w index is to beabove the
insulation level given in Tab 6.
Table 6 : Sound insulation indexes R'w+C
4.5 COMF + Impact index
4.5.1 Due to the potential low frequency noise,
transmittedthrough the floor, the impact noise index requirement is
tobe considered as the sum of the L'n,w index + the adapta-tion
term CI as described in ISO 717-2.
The adaptation term CI added to the L'n,w index is to bebelow
any impact comfort class requirements listed in [2.4.1].
4.6 COMF + Emergence
4.6.1 When the noise level contains subjectively annoyinglow
frequency or tonal components, the noise rating (NR)number should
be used.
To establish the NR number, the linear third octave bandlevels
should be plotted on the NR curve graph (See ISO1996). The NR
numbers correspond to the highest NR curveto which the linear
levels are tangent.
Getting a NR number below the mesured A-weighted valueinduces to
consider the specified criterion satisfied.
4.7 COMF + intermittent noise
4.7.1 Machinery and systems having an intermittent opera-tion
are not to increase the noise level in cabins, withregard to
ambient noise, by more than 5 dB(A) during day-time (from 7 am to
10 pm) and 3 dB(A) during night time(from 10 pm to 7 am).
4.7.2 The shipyard is to propose an intermittent noise
mea-suring program including:
the complete procedure of measurements
the exhaustive list of system which includes,
whenapplicable:
- swimming pool/Jacuzzi equipments and piping dur-ing
filling/emptying/re-circulating
- dishwasher/pulper
- high pressure deck washing piping systems
- hydraulic power pack
- evaporators
- stabiliser systems
- steam dump valve
- laundry/garbage equipments
the ambient noise considered for each system (i.e. noiseat quay
or at sea conditions).
Anchoring, mooring, thrusters, safety alarms,
emergencyequipments are excluded from the list of machinery
systemsconcerned by this paragraph.
This program is to be submitted to the Society prior to
thetrials.
4.8 COMF + intelligibility
4.8.1 In public spaces like theatres, dancing rooms, cine-mas,
conference rooms, restaurants, the architectural designis to take
into account the speech or music intelligibility. Inorder to
maintain a sufficient quality, the RASTI index is tobe above 0,60
(for each public space, measurements are to
Locations Ng = 1 Ng = 2 Ng = 3
Discotheques and show rooms to Cabin
64 62 59
-
Pt E, Ch 6, Sec 5
38 Bureau Veritas July 2011
be carried out in different locations, each measuring
pointcovering less than 40 m2).
The Society may accept a lower number of measuringpoints or a
modification of the point distribution for specificcases.
Note 1: The evaluation of the Rapid Speech Transmission
Index(RASTI) has been standardised in IEC 60268-16.
4.8.2 An Intelligibility noise measuring program is to
besubmitted to the Society, prior to measurement test.
-
July 2011 Bureau Veritas 39
Part EAdditional Class Notations
Chapter 7
REFRIGERATING INSTALLATIONS (REF)
SECTION 1 GENERAL REQUIREMENTS
SECTION 2 ADDITIONAL REQUIREMENTS FOR NOTATION REF-CARGO
SECTION 3 ADDITIONAL REQUIREMENTS FOR NOTATION REF-CONT
SECTION 4 ADDITIONAL REQUIREMENTS FOR NOTATION REF-STORE
-
40 Bureau Veritas July 2011
-
Pt E, Ch 7, Sec 1
July 2011 Bureau Veritas 41
SECTION 1 GENERAL REQUIREMENTS
1 General
1.1 Application
1.1.1 The notations given in [1.1.1] may be completed bythe
following:
PRECOOLING for refrigerating plants designed forensuring within
a suitable time interval the coolingdown of a complete cargo of
fruit or vegetables to therequired temperature of
transportation
QUICKFREEZE for refrigerating plants of fishing vesselsand fish
factory ships where the design and equipmentof such plants have
been recognised as suitable to per-mit quick-freezing of fish in
specified conditions.
The notations REF-CARGO and REF-CONT may be com-pleted by
AIRCONT for ships fitted with a controlled atmo-sphere plant on
board.
1.1.2 The requirements of this Chapter apply to refrigerat-ing
installations on ships, and include the fixed plants
forrefrigerating holds of cargo ships, fishing and factory
ships,fruit and juice carrier ships, etc., refrigerated
containers,various ships services, such as air conditioning,
galleys, etc.These requirements are specific to permanently
installedrefrigerating installations and associated arrangements
andare to be considered additional to those specified in Pt C,Ch 1,
Sec 13, which are mandatory for all ships with refrig-erating
installations.
1.1.3 The notations given in [1.1.1] may be completed bythe
following:
PRECOOLING for refrigerating plants designed forensuring within
a suitable time interval the coolingdown of a complete cargo of
fruit or vegetables to therequired temperature of
transportation
QUICKFREEZE for refrigerating plants of fishing vesselsand fish
factory ships where the design and equipmentof such plants have
been recognised as suitable to per-mit quick-freezing of fish in
specified conditions.
The notations REF-CARGO and REF-CONT may be com-pleted by
AIRCONT for ships fitted with a controlled atmo-sphere plant on
board.
1.1.4 The notations REF-CONT may be completed by (A)or (E) as
defined in Ch 7, Sec 3, [1.1.2].
1.2 Temperature conditions
1.2.1 Cargo space conditionsThe minimum internal temperature or
the temperaturerange for which the notation is granted is to be
mentioned
in the notation. For design temperatures to be consideredfor
designing the plant, see [2.1.1] and [2.1.2].
This indication is to be completed by the mention of
anyoperational restriction such as maximum sea water temper-ature,
geographical or seasonal limitations, etc., as applica-ble.
1.2.2 Container conditionsFor refrigerating plants on board
container ships complyingwith the provisions of Ch 7, Sec 3, in
addition to the datalisted in [1.2.1], the notation is to specify
the maximumnumber of containers liable to be served, and the value
oftheir heat transfer coefficient
k : in W/(m2 C), or
U : k S, in W/C,
where S is the surface through which the heat is transferred,in
m2, as determined by type tests.
1.3 Definitions
1.3.1 Direct cooling systemDirect cooling system is the system
by which the refrigera-tion is obtained by direct expansion of the
refrigerant incoils fitted on the walls and ceilings of the
refrigeratedchambers.
1.3.2 Indirect cooling systemIndirect cooling system is the
system by which the refrigera-tion is obtained by brine or other
secondary refrigerant,which is refrigerated by a primary
refrigerant, circulatedthrough pipe grids or coils fitted on the
walls and ceilings ofthe refrigerated chambers.
1.3.3 Air cooling systemDirect air cooling system is the system
by which the refrig-eration is obtained by circulation of air
refrigerated by an aircooler.
1.3.4 RefrigerantRefrigerant is a cooling medium which is used
to transmitand maintain the cool in the refrigerated chamber.
1.3.5 BrineBrine is a refrigerant constituted by a solution of
industrialsalts, which is normally used to cool the chambers in
theindirect cooling systems, as secondary refrigerant. In gen-eral,
in this Chapter, the word brine is also used to coverother types of
secondary refrigerants, as for instance refrig-erants based on
glycol.
1.3.6 Refrigerating unitA refrigerating unit includes one or
more compressorsdriven by one or more prime movers, one condenser
and allthe associated ancillary equipment necessary to form an
-
Pt E, Ch 7, Sec 1
42 Bureau Veritas July 2011
independent gas-liquid system capable of cooling refriger-ated
chambers.
When the installation includes a secondary refrigerant(brine),
the refrigerating unit is also to include a brine
cooler(evaporator) and a pump.
1.3.7 Refrigerated chamber
A chamber is any space which is refrigerated by a refrigerat-ing
unit. A chamber may be a cargo space or any other shipservice
space, such as for instance the galley.
2 Design criteria
2.1 Reference conditions
2.1.1 Design temperature
Unless otherwise indicated in the specification,
refrigeratingplants are to be designed for the following design
tempera-tures:
Frozen cargo: minus 20C
Fish: minus 20C
Fruit: 0C
Bananas: 12C.
2.1.2 Environmental conditions
Unless otherwise indicated in the ship specification, the
fol-lowing environmental conditions are to be considered forthe
heat transfer and balance calculations and for the run-ning rate of
the refrigerating machinery:
Sea water temperature: 32C
Outside air temperature: 35C
Relative humidity of air at 35C: 80%.
For the determination of heat transfer through outside
wallsliable to be exposed to sun radiation, the outside air
tem-perature is to be taken as equal to 45C.
2.1.3 Operating conditions
The refrigerating plant inclusive of all machinery, equip-ment
and accessories is to operate satisfactorily under theconditions
indicated in Tab 1.
Table 1 : Operating conditions
3 Documentation
3.1 Refrigerating installations
3.1.1 Plans to be submittedThe plans listed in Tab 2 are to be
submitted as applicable.
The listed plans are to be constructional plans completewith all
dimensions and are to contain full indication oftypes of materials
employed.
Plans of equipment which are type approved by the Societyneed
not be submitted, provided the types and model num-bers are made
available.
3.1.2 Calculations to be submittedThe calculations listed in Tab
3 are to be carried out inaccordance with criteria agreed with the
Society and are tobe submitted.
3.2 Controlled atmosphere installations
3.2.1 The plans listed in Tab 4 are to be submitted.
4 General technical requirements
4.1 Refrigeration of chambers
4.1.1 Refrigerating systemsRefrigeration of the chambers may be
achieved by one ofthe following systems:
direct cooling system
indirect cooling system
air cooling system.
4.1.2 Cold distributiona) The chambers may be refrigerated
either by means of
grids distributed on their walls or by means of air circu-lation
on air coolers.
b) Grids and/or air coolers may be supplied either by brineor by
a direct expansion system depending on the typeof refrigerating
system.
4.2 Defrosting
4.2.1 Availabilitya) Means are to be provided for defrosting air
cooler coils,
even when the refrigerated chambers are loaded to theirmaximum.
Air coolers are to be fitted with trays and gut-terways for
gathering condensed water.
b) The defrosting system is to be de