NR467_Rules for Steel Ships_PartEVol02

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17 bis, Place des Reflets - La Dfense 2 - 92400 CourbevoiePostal Address : 92077 Paris La Dfense Cedex

Tel. 33 (0) 1 42 91 52 91 - Fax. 33 (0) 1 42 91 53 20

Email : [email protected]

Web : http://www.veristar.com

PART E Additional Class Notations

Chapters 6 7 8 9 10

NR 467.E2 DT R03 E April 2007

Rules for the Classification ofSteel Ships

o back to welcom

with Amendments June 2007


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M A R I N E D I V I S I O N

G E N E R A L C O N D I T I O N S

ARTICLE 1

1.1. - BUREAU VERITAS is a Society the purpose of whose Marine Division (the Society) is the classifica-tion (Classification) of any ship or vessel or structure of any type or part of i t or system therein collectivelyhereinafter referred to as a Unit whether linked to shore, river bed or sea bed or not, whether operated orlocated at sea or in inland wa ters or partly on land, including submarines, hovercrafts, drilling rigs, offshoreinstallations of any type and of any purpose, their related and ancillary equipment, subsea or not, such aswell head and pipelines, mooring legs and mooring points or otherwise as decided by the Society.

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 Standards,in particular by delegation from different Governments. Those activities are hereafter collectively referred toas Certification.

1.3. - The Society can also provide services related to Classification and Certification such as ship and com-pany safety management certification; ship and port security certification, training activities; all activities andduties incidental thereto such as documentation on any supporting means, software, instrumentation, meas-urements, 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 its rep-resentative requesting the services is hereinafter referred to as the Client. The Services are prepared and

carried out on the assumption that the Clients are aware of the International Maritime and/or OffshoreIndustry (the Industry) practices.

1.5. - The Society is neither and may not be considered as an Underwriter, Broker in ships sale or chartering,Expert in Units valuation, Consulting Engineer, Controller, Naval Architect, Manufacturer, Shipbuilder, Repairyard, Charterer or Shipowner who are not relieved of any of their expressed or implied obligations by theinterventions of the Society.

ARTICLE 2

2.1. - Classification is the ap praisement given by the Society for its Client, at a certain date, following surveysby its Surveyors along the lines specified in Articles 3 and 4 hereafter on the level of compliance of a Unit toits Rules or part of them. This ap praisement is represented by a class entered on the Certificates and peri-odically transcribed in the Societys 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 present theUnit for surveys and to inform the Society without delay of circumstances which may affect the givenappraisement or cause to modify its scope.

2.4. - The Client is to give to the S ociety all access and information necessary for the performance of the re-quested Services.

ARTICLE 3

3.1. - The Rules, procedures and instructions of the Society take into account at the date of their preparationthe state of currently available and proven technical knowledge of the Industry. They are not a code of con-struction neither a guide for maintenance or a safety handbook.

Committees consisting of personalities from the Industry contribute to the development of those documents.

3.2. - The Society only is qualified to apply its Rules and to interpret them. Any reference to them hasno effect unless it involves the Societys intervention.

3.3. - The Services of the Society are carried out by professional Surveyors according to the Code of Ethicsof the Members of the International Association of Classification Societies (IACS).

3.4. - The operations of the Society in providing its Services are exclusively conducted by way of ran-dom inspections and do not in any circumstances involve monitoring or exhaustive verification.

ARTICLE 4

4.1. - The Society, acting by reference to its R ules: reviews the construction arrangements of the Units as shown on the documents presented by the Client; 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 5

5.1. - 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 provided for.

In particular, the Society does not engage in any work relating to the design, building, production orrepair checks, neither in the operation of the Units or in their trade, neither in any advisory services,and cannot be held liable on those accounts. Its certificates cannot be construed as an implied or ex-

press warranty of safety, fitness for the purpose, seaworthiness of the Unit or of its value for sale,insurance or chartering.

5.3. - The Society does not declare the acceptance or commissioning of a Unit, nor of its constructionin conformity with its design, that being the exclusive responsibility of its owner or builder, respec-tively.

5.4. - The Services of the Society cannot create any obligation bearing on the Society or constitute any war-ranty of proper operation, beyond any representation set forth in the Rules, of any Unit, equipment or m achin-ery, computer software of any sort or other comparable concepts that has been subject to any survey by theSociety.

ARTICLE 6

6.1. - 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 direct andreasonably foreseeable consequence of an error or omission of the Society, its liability towards theClient is limited to ten times the amount of fee paid for the Service having caused the damage, pro-vided however that this limit shall be subject to a minimum of eight thousand (8,000) Euro, and to amaximum which is the greater of eight hundred thousand (800,000) Euro and one and a half times theabove mentioned fee.

The Society bears no liability for indirect or consequential loss such as e.g. loss of revenue, loss ofprofit, loss of production, loss relative to other contracts and indemnities for termination of otheragreements.

6.3. - All claims are to be presented to the Society in writing within three months of the date when the Serviceswere supplied or (if later) the date when the events which are relied on of were first known to the Client, andany claim which is not so presented shall be deemed waived and absolutely barred.

ARTICLE 7

7.1. - Requests for Services are to b e in writing.

7.2. - Either the Client or the Society can terminate as of right the requested Services after giving theother party thirty days' written notice, for convenience, and without prejudice to the provisions in Ar-

ticle 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. hereabove subject to compliance with 2.3. hereabove andArticle 8 hereunder.

ARTICLE 8

8.1. - The Services of the Society, whether completed or not, involve the payment of fee upon receipt of theinvoice and the reimbursement of the expenses incurred.

8.2. - Overdue amo unts are increased as of right by interest in accordance with the applicable legis-lation.

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 classification

of the Unit for them, to the classification file consisting of survey reports and certificates which have beenprepared 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 reports can

be handed over to another Classification Society Member of the International Association of Classifica-tion Societies (IACS) in case of the Units transfer of class;

the data relative to the evolution of the Register, to the class suspension and to the survey status of theUnits are passed on to IACS according to the association working rules;

the certificates, documents and information relative to the Units classed with the Society may be reviewedduring IACS audits and are di sclosed upon order of the concerned governmental or inter-governmentalauthorities or of a Court h aving jurisdiction.

The documents and data are subject to a file management plan.

ARTICLE 10

10.1. - Any delay or shortcoming in the performance of its Services by the Society arising from an event notreasonably foreseeable by or beyond the control of the Society shall be deemed not to be a b reach of con-tract.

ARTICLE 11

11.1. - In case of diverging opinions during surveys between the Client and the Societys surveyor, the Societymay 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 the So-ciety to the advice of its Marine Advisory Committee.

ARTICLE 12

12.1. - Disputes over the Services carried out by delegation of Governments are assessed within the frame-work of the applicable agreements with the States, international Conventions and national rules.

12.2. - Disputes arising out of the payment of the Societys 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 are ex-clusively submitted to arbitration, by three arbitrators, in London according to the Arbitration Act1996 or any statutory modification or re-enactment thereof. The contract between the Society and theClient shall be governed by English law.

ARTICLE 13

13.1. - These General Conditions constitute the sole contractual obligations binding together the So-

ciety and the Client, to the exclusion of all other representation, statements, terms, conditions wheth-er 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 validityof the remaining p rovisions.

13.3. - The definitions herein take precedence over any definitions serving the same purpose which may ap-pear in other documents issued by the Society.

BV Mod. Ad. ME 545 j - 16 February 2004


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April 2007

RULES FOR THECLASSIFICATION OFSHIPS

Part E

Additional 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 INSTALLATION (REEFER)

Chapter 8 ICE CLASS (ICE)

Chapter 9 POLLUTION PREVENTION (CLEANSHIP)

Chapter 10 OTHER ADDITIONAL CLASS NOTATIONS
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2 Bureau Veritas April 2007

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, 2007. The Society may refer to the contents hereofbefore July 1st, 2007, as and when deemed necessary or appropriate.
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April 2007 Bureau Veritas 3

CHAPTER 6

COMFORT ON BOARD (COMF)

Section 1 General Requirements

1 General 21

1.1 Application1.2 Basic principles1.3 Regulations, Standards1.4 Definitions1.5 Document to be submitted

2 Conditions of attribution 22

2.1 Measurements

2.2 Determination of comfort rating number2.3 Measuring locations

3 Testing conditions 23

3.1 General3.2 Harbour test conditions3.3 Sea trial conditions

Section 2 Additional Requirements for Ships of less than 65 m in Length

1 General 24

1.1 Application

2 COMF NOISE 24

2.1 Measurement procedure2.2 Noise levels2.3 Sound insulation measurements

3 COMF VIB 25

3.1 Measurement procedure3.2 Vibration levels

Section 3 Additional Requirements for Cargo Ships greater than or equal to

65 m in Length

1 General 26

1.1 Application

2 COMF NOISE 26

2.1 Measurement procedure2.2 Noise levels2.3 Sound insulation measurements

3 COMF VIB 273.1 Measurement procedure3.2 Vibration levels


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Section 4 Additional Requirements for Passenger Ships greater than or

equal to 65 m in Length

1 General 28

1.1 Application

2 COMF NOISE 28

2.1 Measurement procedure2.2 Noise levels2.3 Sound insulation measurements2.4 Impact measurements

3 COMF VIB 30


Section 5 Additional Requirements for Yachts

1 General 31

1.1 Application

2 COMF NOISE 31

2.1 Measurement procedure2.2 Noise levels2.3 Sound insulation measurements2.4 Impact measurements

3 COMF VIB 32


4 COMF + 32

4.1 Application4.2 Data processing - Analysis4.3 Measurement procedure4.4 COMF + Sound insulation index4.5 COMF + Impact index4.6 COMF + Emergence4.7 COMF + intermittent noise

4.8 COMF + intelligibility


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CHAPTER 7

REFRIGERATING INSTALLATION (REEFER)


1 General 37

1.1 Application1.2 Temperature conditions1.3 Definitions

2 Design criteria 38

2.1 Reference conditions

3 Documentation 38

3.1 Refrigerating installations3.2 Controlled atmosphere installations

4 General technical requirements 38

4.1 Refrigeration of chambers4.2 Defrosting4.3 Prime movers and sources of power4.4 Pumps4.5 Sea connections4.6 Refrigerating machinery spaces4.7 Exemptions for small plants4.8 Personnel safety

5 Refrigerated chambers 40

5.1 Construction of refrigerated chambers5.2 Penetrations5.3 Access to refrigerated spaces5.4 Insulation of refrigerated chambers5.5 Protection of insulation5.6 Miscellaneous requirements5.7 Installation of the insulation5.8 Drainage of refrigerated spaces

6 Refrigerants 42

6.1 General6.2 Rated working pressures

7 Refrigerating machinery and equipment 43

7.1 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


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8 Specific requirements for direct and indirect refrigerating systems 45

8.1 Specific requirements for refrigerating systems8.2 Specific requirements for air cooling systems and distribution and renewal of air

in cargo spaces

9 Instrumentation, alarm, monitoring 469.1 General9.2 Instrumentation, alarm and monitoring arrangement

10 Material tests, inspection and testing, certification 47

10.1 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-CARGO

1 General 49

1.1 Application1.2 Refrigeration of cargo spaces1.3 Heating

2 Refrigerated cargo spaces 49

2.1 Insulation

3 Instrumentation 49

3.1 Thermometers in cargo spaces

4 Additional requirements for AIR-CONT notation 50

4.1 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 QUICKFREEZE54

5.1 General5.2 Shipboard tests

Section 3 Additional Requirements for Notation REF-CONT

1 General 56

1.1 Application

2 Refrigerating plants supplying refrigerated air to containers 562.1 Definitions2.2 Cold distribution


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2.3 Equipment and systems2.4 Thermometers2.5 Workshop and shipboard inspections and tests2.6 Temperature measuring and recording devices2.7 Shipboard tests

3 Ships supplying electrical power to self-refrigerated containers 59

3.1 Electrical equipment3.2 Installation of containers

Section 4 Additional Requirements for Notation REF-STORE

1 General 60

1.1 Application


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CHAPTER 8

ICE CLASS (ICE)

Section 1 General

1 General 63

1.1 Application1.2 Owners responsibility

2 Ice class draughts and ice thickness 63

2.1 Definitions2.2 Draught limitations in ice2.3 Ice thickness

3 Output of propulsion machinery 643.1 Required engine output for classes IAS, IA, IB, IC

Section 2 Hull and Stability

1 General 67

1.1 Application1.2 Regions1.3 Ice strengthened area

2 Structure design principles 68

2.1 General framing arrangement2.2 Transverse framing arrangement2.3 Bilge keels

3 Design loads 69

3.1 General3.2 Ice loads

4 Hull scantlings 70

4.1 Plating4.2 Ordinary stiffeners

4.3 Primary supporting members5 Other structures 73

5.1 Application5.2 Fore part5.3 Aft part5.4 Deck strips and hatch covers5.5 Sidescuttles and freeing ports

6 Hull outfitting 74

6.1 Rudders and steering arrangements6.2 Bulwarks


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Section 3 Machinery

1 Propulsion 75

1.1 Propulsion machinery performance1.2 Ice torque

1.3 Starting arrangements for propulsion machinery1.4 Propellers1.5 Shafting1.6 Reverse and reduction gearing

2 Miscellaneous requirements 77

2.1 Sea inlets and cooling water systems of machinery2.2 Steering gear2.3 Fire pumps2.4 Transverse thrusters


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CHAPTER 9

POLLUTION PREVENTION (CLEANSHIP)


1 Application 81

1.1 General1.2 Additional class notation CLEANSHIP1.3 Additional class notation CLEANSHIP SUPER1.4 Additional class notations CLEANSHIP AWT and CLEANSHIP SUPER AWT

2 Definitions 82

2.1 Definitions related to sea pollution2.2 Definitions related to air pollution

3 Documents to be submitted and applicable standards 83

3.1 Documents to be submitted3.2 Applicable standards

Section 2 Design Requirements for Notations CLEANSHIP

and CLEANSHIP AWT

1 General 87

1.1 Application

1.2 Documents to be submitted

2 Design requirements 87

2.1 Waste streams2.2 Oily wastes2.3 Wastewaters2.4 Garbage and hazardous wastes2.5 Ballast water control and management2.6 Hull antifouling systems2.7 Prevention of pollution by oil spillage and leakage2.8 Ozone depleting substances2.9 Emission of nitrogen oxides (NOx) from diesel engines

2.10 Emission of sulphur oxides (SOx) from the ship2.11 Shipboard incinerators

Section 3 Additional Design Requirements for Notations CLEANSHIP SUPER

and CLEANSHIP SUPER AWT

1 General 95

1.1 Application1.2 Documents to be submitted

2 Design requirements 952.1 Waste streams and air emissions2.2 Garbage and hazardous wastes


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2.3 Ballast water control and management2.4 Protection against oil pollution in the event of collision or grounding2.5 Prevention of air pollution

Section 4 Additional Design Requirements for Notations CLEANSHIP AWT

and CLEANSHIP SUPER AWT

1 General 98

1.1 Application1.2 Standards1.3 Documents to be submitted1.4 Definitions and abbreviations

2 Design requirements 98

2.1 Design of the AWT plant

2.2 Parameters to be recorded

Section 5 Onboard Surveys (CLEANSHIP, CLEANSHIP AWT,

CLEANSHIP SUPER, CLEANSHIP SUPER AWT)

1 Prevention of sea pollution: periodical tests and measurementsdone by the Shipowner 99

1.1 General1.2 Initial period1.3 Periodical tests after first year of service

2 Prevention of sea pollution: periodical surveys 100

2.1 Initial survey2.2 Periodical survey

3 Prevention of air pollution: on board surveys 100

3.1 On board surveys for ozone depleting substances3.2 On board surveys for NOx emission3.3 Other surveys

Appendix 1 Guidelines for Performance Tests for Sewage Treatment Plants1 International effluent standards for sewage treatment plants 101

1.1 General1.2 Faecal coliform standard1.3 Suspended solid standards1.4 Additional requirements

2 Guidelines for performance tests for sewage treatment plants with respect toeffluent standards 101

2.1 General2.2 Testing considerations


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Appendix 2 Guidelines for the Development of Garbage Management Plans

1 103

1.1 Introduction1.2 Prevention of pollution by garbage

1.3 Matters to be addressed in the garbage management plan

Appendix 3 Standard Specifications for Shipboard Incinerators (IMO

Resolution MEPC.76(40) Adopted on 25 September 1997, as

Amended by Resolution MEPC.93(45) Adopted on 5 October 2000)

1 General 105

1.1 Scope1.2 Definitions

2 Design 1062.1 Materials and manufacture2.2 Operating requirements2.3 Operating controls2.4 Other requirements

3 Tests and certification 109

3.1 Tests3.2 Certification3.3 Marking3.4 Quality assurance

4 Emission standard for shipboard incinerators with capacityof up to 1500 kW - Minimum information to be provided 110

4.1 IMO type approval certificate4.2 Fuel related emission4.3 Passenger/cruise ships with incinerator installations having a total capacity of

more than 1500 kW

5 Fire protection requirements for incinerators and wastestowage spaces 112

5.1 SOLAS requirements to be applied

6 Incinerators integrated with heat recovery units 113

6.1 Flue gas system6.2 Alarms6.3 Cleaning devices

7 Flue gas temperature 113

7.1 General


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Appendix 4 Guidelines for Performance Tests for Advanced Wastewater

Treatment

1 Effluent standards for advanced wastewater treatment plants 114

1.1 General

2 Guidelines for performance tests 114

2.1 Testing conditions


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CHAPTER 10

OTHER ADDITIONAL CLASS NOTATIONS

Section 1 Strengthened Bottom (STRENGTHBOTTOM)

1 General 117

1.1 Application1.2 General bottom arrangement

2 Primary supporting members arrangement 118

2.1 Ships with a longitudinally framed bottom2.2 Ships with a transversely framed bottom

3 Bottom scantlings 118

3.1 Plating3.2 Ordinary stiffeners3.3 Primary supporting members

Section 2 Grab Loading (GRABLOADING)

1 General 119

1.1 Application

2 Scantlings 119

2.1 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 120

2.1

Section 4 Single Point Mooring (SPM)

1 General 121

1.1 Application

2 Documentation 121

2.1 Documentation for approval2.2 Documentation for information

3 General arrangement 121

3.1 General provision3.2 Typical layout3.3 Equipment


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4 Number and safe working load of chain stoppers 121

4.1 General

5 Mooring components 122

5.1 Bow chain stopper

5.2 Bow fairleads5.3 Pedestal roller fairleads5.4 Winches or capstans

6 Supporting hull structures 124

6.1 General

7 Strength criteria 124

7.1 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 125

2.1 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 covers3 Procedure for the assignment of the notation 128

3.1 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 129

4.1 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 132

5.1 Calculation hypothesis5.2 Distribution of forces5.3 Containers only secured by locking devices5.4 Containers secured by means of lashings or buttresses5.5 Stiffnesses

6 Strength criteria 134

6.1 Permissible loads on containers

6.2 Permissible loads induced by lashing on container corners6.3 Permissible loads on lashing equipment6.4 Permissible stresses on cell guides


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Section 6 Dynamic Positioning (DYNAPOS)

1 General 135

1.1 Application1.2 Definitions

1.3 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 136

2.1 General2.2 Condition of analysis2.3 Modelling and simulations2.4 Risk analysis

3 Equipment class 138

3.1 General3.2 Equipment class according to single failure

4 Functional requirements 138

4.1 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 142

5.1 General5.2 Arrangement and performance of reference systems5.3 Type of position reference system5.4 Other reference systems5.5 Vessel sensors

6 Installation requirements 143

6.1 Cables and piping systems6.2 Thruster location

7 Operational requirements 145

7.1 General

8 Tests and trials 145

8.1 Inspection at works8.2 Trials

9 Environmental station keeping index ESKI 145

9.1 Definition9.2 Environmental conditions9.3 Condition of ESKI estimation9.4 Documentation to be submitted and example


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Section 7 Vapour Control System (VCS)

1 General 147

1.1 Application1.2 Definitions

1.3 Documentation to be submitted

2 Vapour system 147

2.1 General2.2 Vapour manifold2.3 Vapour hoses2.4 Vapour overpressure and vacuum protection

3 Instrumentation 150

3.1 Cargo tank gauging equipment3.2 Cargo tank high level alarms3.3 Cargo tank overfill alarms

3.4 High and low vapour pressure alarms4 Instruction manual 150

4.1 General4.2 Content

5 Testing and trials 151

5.15.2 Shipboard trials

6 Additional requirements for notation TRANSFER 151

6.1 Application6.2 Equipment

Section 8 Cofferdam Ventilation (COVENT)

1 General 152


2 Design and construction 152

2.1 Arrangement2.2 Other technical requirements

3 Inspection and testing 153

3.1 Equipment and systems3.2 Testing on board

Section 9 Centralised Cargo and Ballast Water Handling Installations

(CARGOCONTROL)

1 General 154



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2 Design and construction requirements 154

2.1 Control station2.2 Remote control, indication and alarm systems

3 Inspection and testing 155

3.1 Equipment and systems3.2 Testing on board

Section 10 Ship Manoeuvrability (MANOVR)

1 General 156

1.1 Application1.2 Manoeuvre evaluation

2 Definitions 156

2.1 Geometry of the ship

2.2 Standard manoeuvres and associated terminology3 Requirements 157

3.1 Foreword3.2 Conditions in which the requirements apply3.3 Criteria for manoeuvrability evaluation

4 Additional considerations 157

4.1 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 160

2.1 Hull2.2 Stability

3 Machinery installations 160

3.1 General3.2 Principles3.3 Design requirements

4 Electrical installations 162

4.1 General4.2 System design4.3 Protection

5 Additional requirements 162

5.1 Special equipment


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Part E

Service Notations

Chapter 6

COMFORT ON BOARD (COMF)

SECTION 1 GENERALREQUIREMENTS

SECTION 2 ADDITIONALREQUIREMENTS FOR SHIPS OF LESS THAN65 M INLENGTH

SECTION 3 ADDITIONAL REQUIREMENTS FORCARGOSHIPS GREATER

THAN OR EQUAL TO 65 M INLENGTH

SECTION 4 ADDITIONAL REQUIREMENTS FOR PASSENGER SHIPS GREATER

THAN OR EQUAL TO 65 M INLENGTH

SECTION 5 ADDITIONAL REQUIREMENTS FORYACHTS


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Symbols used in this Chapter

NCR : Normal continuous rating of the propulsion

MCR : Maximum continuous rating of the propulsiondB : Decibel, unit of sound pressure level compared

to the reference pressure level (2 10-5Pa)

dB(A) : (A) weighted global value of the sound pressurelevel

octave band: Frequency space limited by a given frequencyand 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).


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Pt E, Ch 6, Sec 1

Amendments June 2007 Bureau Veritas 21


1 General

1.1 Application

1.1.1 The additional class notations COMFare 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 COMFmay be completed as follows:

COMF-NOISE x: Comfort with regard to criteria appli-cable to specified ship category

with x = 1, 2 or 3, 1 being the highest grade for bothpassenger and crew spaces

COMF-VIB x: Comfort with regard to criteria applicableto specified ship category

with x = 1, 2 or 3, 1 being the highest grade for bothpassenger and crew spaces

COMF+: Comfort with regard to optional criteria appli-cable to Yachts.

This notation deal with optional requirements in view toevaluate high standard comfort level.

The requirements corresponding to those additional classnotations are given in Ch 6, Sec 2 to Ch 6, Sec 5, accordingto the concerned ship type.

The assignment of COMF-NOISE and COMF-VIB can be

done separately for passenger and crew spaces. COMF Paxdeals with passenger comfort:

COMF-NOISE-Pax x and COMF-VIB-Pax x may begranted accordingly with different grades

COMF Crewdeals with crew comfort:

COMF-NOISE-Crew xand COMF-VIB-Crew xmay 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 during building stage, sea

trials or in service. This Specialist is to be granted with thedelegation given by the Society.

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 Noise

The following standards refer to the edition in force for the

noise IMO Resolution A.468 (XII), "Code on noise levels

onboard 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".

1.3.2 Vibration

The following standards refer to the edition in force for thevibration

ISO 2041, "Vibration and shock - Vocabulary"

ISO 6954, "Mechanical vibration and shock - Guide-lines for the overall evaluation of vibration in merchantships"

ISO 2631, "Mechanical vibration and shock- Evaluationof human exposure to whole-body vibration"

ISO 8041, "Human response to vibration - Measuringinstrumentation".


24/166

Pt E, Ch 6, Sec 1

22 Bureau Veritas Amendments June 2007

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 ships con-cerned:

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. Distinction

between 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 class

notation have to be performed under the conditions speci-fied in [3].

2.1.2 Instrumentation

a) 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) For noise measurements

The instrumentation has to be calibrated in situ, beforeand after the tests.

c) For vibration measurements

The instrumentation has to include at least a transducer(accelerometer or velocity transducer) with an appropri-ate amplifier, and a FFT analyser. Signals may possiblybe tape-recorded.

2.1.3 Data processing - Analysis

a) For noise level

Results have to be given on a table in global values(dB(A)).

b) For vibration level

The criteria of vibration level is expressed in terms ofoverall frequency-weighted r.m.s. velocity (mm/s) from1 to 80Hz as defined by ISO 6954.

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 measurements required, spot-check measurements (atleast 10% of measuring points) are to be performed by, orunder the supervision of, the Society. This spot check is tobe compared to corresponding measurements done by theshipyard/external specialist (see Note 1) in order to assessthe validity of the entire set of measurements carried out.

Note 1: The maximum deviation allowed between these measure-ments is 2 dB(A) for noise and 0,2mm/s for vibration, to validate theset of measurements.

2.2 Determination of comfort rating number

2.2.1 The notation is completed by a grade 1, 2 or 3 whichrepresents the merit level achieved for the assignment of thenotation, the grade 1 corresponding to the most comforta-ble (highest) class notation.

N0 A/I Document

1 I General arrangements

2 A List of measuring points

Noise level at harbour conditions (yachtonly)

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


25/166

Pt E, Ch 6, Sec 1


2.2.2 Measurements are to be carried out by or undersupervision of the Society.

2.2.3 Comfort grade is estimated for each space. If, for allthe spaces, levels are lower or equal to those correspondingto a given grade, then the granted grade is that grade.

Excessive noise level may be accepted but shall not exceedthe following maximum values:

Tolerance of 3 dB(A) for 18% of all cabins and toleranceof 5 dB(A) for 2% of all cabins (with a minimum of 1cabin).

Tolerance of 3 dB(A) for 25% of measuring points andtolerance of 5 dB(A) for 5% of measuring points, inother spaces.

Excessive vibration level may be accepted but shall not

exceed the following maximum value: 0,3mm/s for 20% of measuring points in all passenger

and crew spaces.

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. Measurements areto be carried out in the following locations, according to theship type (see [1.1.1]). Measurements may be performed inlocations such as gangways, sanitary spaces, when noise

and vibration levels subjectively seem excessive.

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 and, in thiscase, it is to be clearly 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 noise measure-

ments, rooms have to be preferably fully completed (outfit-ting, furniture, covering...). Measurements may beperformed even in an unfinished state, which generally sup-pose 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 these

specific 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.

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:

generators

air conditioning and machinery ventilation

evaporators

anti rolling devices

compressors, chillers

cold rooms

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 loadingconditions defined for sea trials. For cargo ships which maybe operated over a large range of drafts, if the behaviourobserved for conditions which differ from the test conditionis different from the measured one, additional measure-

ments 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 could be accepted, in comparison with theresults.

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 rudder angleless than 2 degrees portside or starboard, for the duration ofthe measurement. If ship manoeuvring is needed, thenmeasurements must be stopped until recovery of heading.


26/166

Pt E, Ch 6, Sec 2


SECTION 2 ADDITIONALREQUIREMENTS FORSHIPS OFLESS THAN65 M INLENGTH

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. They are additional to the applicable require-ments 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 shut, unless they haveto be kept open in normal use.

If during sea trials the measurements could not be per-formed with machinery equipments, Hvac and machinery

ventilation in normal operation ( Ch 6, Sec 1, [3.3]), thenoise spectra of the unmeasured equipments must be addedwith the values carried out on sea trials for affected areas(additional measurements done at quay).

2.1.2 Measuring positions

a) 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 the cabinsand offices, measurements are to be taken at 2,0 m at

least from the existing noise sources (e.g. inlet/outlet ofair conditioning).

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 than

20 m2.

b) Sound insulation measurements

The selection of insulation measuring locations is to berepresentative of the different type 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 g 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 sound insulationindexes given in Tab 2 and Tab 3. Measurements are to beperformed in situ, ship at quay or at anchorage.

Table 1 : Noise levels

Noise levels, in dB (A)

Locations(1) Ng = 1 Ng = 2 Ng = 3

Wheelhouse 63 66 66

Passenger Cabins 50 54 58

Crew Cabins 55 58 60

Public spaces (type B), mess rooms 60 63 66

Passages and type D spaces 65 68 72

Engine control room 74 77 80

Open public areas 70 73 76

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]


27/166

Pt E, Ch 6, Sec 2


Table 2 : Sound insulation indexes Rx

for passenger areas


for crew areas

3 COMF VIB



Tests are to be conducted under the conditions described inCh 6, Sec 1, [3.3].


Measurements are to be taken in the vertical direction. In

cabins, offices or other small size rooms, measurements are

to be taken on the floor in the centre of the room. For larger

rooms, several measuring points may be required and are to

be 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 in

the engine control room, if any. On passenger ships having

relatively 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 noise), each

measuring points covering less than 20 m2.

In addition to measurements in vertical direction, measur-

ing points in horizontal direction, e.g. transverse and longi-

tudinal directions, are to be measured on one point of eachdeck.

3.2 Vibration levels

3.2.1 Vibration levels corresponding to the vibration grade

g are provided in Ch 6, Sec 3, Tab 1 according to the ISO

6954 (the limits listed below are applicable for any direc-

tions).

Table 4 : Vibration levels

Between Ng = 1 Ng = 2 Ng = 3

Cabin to cabin 40 38 36

Cabin to corridor 38 36 34

Cabin to stairs 50 50 50

Cabin to public spaces 53 50 48




Cabin to stairs 35 32 30Cabin to public spaces 45 45 45

Overall frequency-weighted r.m.s. velocity (mm/s) values from 1Hz to 80 Hz

Locations(1) Vg = 1 Vg = 2 Vg = 3

Wheelhouse 3,5 4 4,5

Passenger Cabins3 3,5 4

Crew Cabins

Public spaces (type B), mess rooms3 4 5

Passages and type D spaces

Engine control room 4 6 8

Open public areas 4 6 8

Other workspaces 4 6 8

(1) For the definition of type A to type D public spaces, refer to Ch 6, Sec 1, [1.4.1].


28/166

Pt E, Ch 6, Sec 3


SECTION 3 ADDITIONAL REQUIREMENTS FORCARGOSHIPSGREATER THAN OR EQUAL TO 65 M INLENGTH

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 NOISE2.1 Measurement procedure


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 shut, unless they are tobe kept open in normal use.

If during sea trials the measurements could not be per-formed with machinery equipments, Hvac and machineryventilation in normal operation ( Ch 6, Sec 1, [3.3]), thenoise spectra of the unmeasured equipments are to be

added with the values carried out on sea trials for affectedareas (additional measurements done at quay).



Measurement are to be taken at a height between 1,2and 1,6 m from the deck and at a distance above 1,0 m

from any boundary surface of the room. In the cabinsand offices, measurements are to be taken at 2,0 m atleast from the existing noise sources (e.g. inlet/outlet of

air conditioning).

On open deck, measurements are to be taken at 2 m atleast from the existing noise sources (e.g. inlet/outlet of

ventilation).

In the areas corresponding to Navigation spaces,

Service spaces and Work spaces as described inIMO Resolution A.468 (XII), measurements are to be

taken on each deck, with three measuring points in thenavigation bridge deck (centre line and both sides). Inaddition, measurements are to be carried out in a mini-

mum of 60% of the rooms on each cabins deck (includ-ing hospital). When the engine casing is included in theaccommodation area, noise levels are to be measured

in each adjacent room. For large rooms exceeding

20 m2 (mess rooms, recreation rooms...), noise andvibration measurements are to be performed every

20 m2, at both sides (if breadth exceeds 5 m), at both

ends (if length exceeds 5 m) and in the centre line.


The selection of insulation measuring locations is to berepresentative of the different type of insulation pro-

vided in Tab 2 (a minimum of one measurement of eachtype is required).



Locations Ng = 1 Ng = 2 Ng = 3

Wheelhouse 60 63 65Radio 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


29/166

Pt E, Ch 6, Sec 3


2.2 Noise levels

2.2.1 Noise levels in standard spaces defined in Ch 6, Sec 1,[1.4]and corresponding to the noise grade gare provided inTab 1.

Noise levels described in IMO Resolution A.468 (XII) are

applicable for all locations unlisted in Tab 1.


2.3.1 Between two adjacent accommodation spaces,acoustic insulation is to satisfy the sound insulation indexesgiven in Tab 2. Measurements are to be performed in situ,ship at quay or at anchorage.


for crew areas

3 COMF VIB



Tests are to be conducted under the conditions described in

Ch 6, Sec 1, [3.3].

For ships which may operate over a large range of draughts,

tests are to be conducted under a minimum of two normal

loading conditions (e.g. ballast condition and design draught

condition).


Measurements are to be taken in the vertical direction. In

cabins, offices or other small size rooms, measurements are

to be taken on the floor in the centre of the room. For larger

rooms, several measuring points may be required and are to

be chosen according to the local structure (measurements

of the different existing types of stiffened panels).

In the areas corresponding to Navigation spaces, Service

spaces and Work spaces, measurements are to be taken

on each deck, with three measuring points in the navigation

bridge deck (centre line and both sides). In addition, meas-

urements are to be carried out in a minimum of 60% of therooms on each cabins deck (including hospital).

In addition to measurements in vertical direction, measur-

ing points in horizontal direction, e.g. transverse and longi-

tudinal directions, are to be measured on one point on each

deck.


3.2.1 Vibration levels corresponding to the vibration grade

g are provided in Tab 3 according to the ISO 6954 (the lim-

its listed below are applicable for any directions).







Overall frequency-weighted r.m.s. velocity (mm/s) values from 1Hz to 80Hz

Locations Vg = 1 Vg = 2 Vg = 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 6,0 7,0

Workshops

Alleyways, staircases and passages in crew areas 5,0 6,0 7,0


30/166

Pt E, Ch 6, Sec 4


SECTION 4 ADDITIONAL REQUIREMENTS FOR PASSENGER SHIPS

GREATER THAN OR EQUAL TO65 M INLENGTH

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



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 shut, unless they haveto be kept open in normal use.


ventilation in normal operation ( Ch 6, Sec 1, [3.3]), thenoise spectra of the unmeasured equipments must be addedwith the values carried out on sea trials for affected areas(additional measurements done at quay).



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 the cabinsand offices, measurements are to be taken at 2,0 m atleast from the existing noise sources (e.g. inlet/outlet ofair conditioning).


For the location and number of measuring points, thelength of the ship is divided in two parts:

The aft part of the ship to the front part of casing

- minimum of 35% of cabins for noise assessment

- all public spaces and open decks.

In cabins, the measurement is to be carried out atthe centre of the cabin. For large public rooms(lounges, restaurants) measurements are to be car-

ried out in different locations, each measuring pointcovering less than 50 m2.

The front bulkhead of the casing to the fore end

- minimum of 15% of cabins for noise assessment


In cabins, the measurement is to be carried out atthe centre of the cabin. For large public rooms(lounges, restaurants) measurements are to be car-ried out in different locations, each measuring point

covering less than100 m2.

Note 1: The Society may accept a lower number of points or a

modification of the points distribution for specific cases.


The selection of insulation measuring locations is to berepresentative of the different type of insulation pro-vided in Tab 2 and Tab 3 (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 covering available on

the ship (a minimum of two measurements of each deckcovering is required).

2.2 Noise levels




2.3.1 Between two adjacent accommodation spaces,acoustic insulation has to satisfy the sound insulationindexes given in Tab 2 and Tab 3. Measurements are to beperformed in situ, ship at quay or at anchorage.

2.4 Impact measurements

2.4.1 In general, a normalised impact sound pressure levelis to be kept below 50 dB for the cabins. This value is to beincreased to 60 dB for cabins below decks covered withhard materials (wood, marble, tiles,.). For cabins located

below sport rooms or dance floors, a normalized impactsound pressure level is to be kept below 45 dB.


31/166

Pt E, Ch 6, Sec 4



Table 2 : Sound insulation indexes Rw for passenger areas

Table 3 : Sound insulation indexes Rw for crew areas


Locations(1) Ng = 1 Ng = 2 Ng = 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 63Crew 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


(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.


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

Cabin to corridor (top level) 42 40 37




Cabin to discotheques and show rooms 64 62 60





Cabin to public spaces, mess 45 45 45


32/166

Pt E, Ch 6, Sec 4


3 COMF VIB





Measurements are to be taken in the vertical direction. Incabins, offices or other small size rooms, measurements areto be 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).

For the location and number of measuring points, the lengthof the ship is divided in two parts:

The aft part of the ship to the front part of casing:

- minimum of 20% of cabins vibration assessment- all public spaces and open decks.

In cabins, the measurements are to be carried out at thecentre of the cabin. For large public rooms (lounges, res-taurants) measurements are to be carried out in differ-ent locations, each measuring point covering less than

50 m2.

The front bulkhead of the casing to the fore end:

- minimum of 10% of cabins vibration assessment


In cabins, the measurements are to be carried out at thecentre of the cabin. For large public rooms (lounges, res-taurants) measurements are to be carried out in differ-ent locations, each measuring point covering less than

100 m2.

Note 1: The Society may accept a lower number of points or a

modification of the points distribution for specific cases.

In addition to measurements in vertical direction, measur-ing points in horizontal direction, i.e. transverse and longi-tudinal directions, are to be measured on each 3rd deck,with one measuring point in the fore part of the ship, one inthe middle part and one in the aft part.


3.2.1 Vibration levels corresponding to the vibration gradeg are provided in Tab 4 according to the ISO 6954 (the lim-its listed below are applicable for any directions).


Overall frequency-weighted r.m.s. velocity (mm/s) values from 1Hz to 80 Hz

Locations Vg = 1 Vg = 2 Vg = 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

Wheelhouse3,0 3,5 4,0

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 6,0 6,5

Workshops

Alleyways, staircases and passages in crew areas 5,0 6,0 7,0



33/166

Pt E, Ch 6, Sec 5


SECTION 5 ADDITIONAL REQUIREMENTS FORYACHTS

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 procedure2.1.1 Measuring conditions

For the noise level measurements in harbour conditions, themachinery and chiller must be at normal power needed atquay. Hvac and machinery ventilation must be in operationall over the ship at the nominal rate.

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 be shut,unless they are to be kept open in normal use.


ventilation in normal operation ( Ch 6, Sec 1, [3.3]), thenoise spectra of the unmeasured equipments are to beadded with the values carried out on sea trials for affectedareas (additional measurements done at quay).



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 the cabinsand offices, measurements are to be taken at 2,0 m atleast from the existing noise sources (e.g. inlet/outlet ofair conditioning).


The noise measurements are to be measured in all pas-senger spaces, each measuring point covering less than

15 m2.


The selection of insulation measuring locations is to berepresentative of the different type of insulation pro-vided in Tab 2 (a minimum of two measurements ofeach type is required).

c) Impact measurements

The selection of impact measuring locations have to berepresentative of the different deck covering availableon the ship (a minimum of two measurements of eachdeck covering is required).

2.2 Noise levels




2.3.1 Between two adjacent accommodation spaces,acoustic insulation has to satisfy the sound insulationindexes given in Tab 2. Measurements are to be performedin situ, ship at quay or at anchorage.

2.4 Impact measurements

2.4.1 In general, a normalised impact sound pressure levelis to be kept below 50 dB for the cabins. This value is to beincreased to 60 dB for cabins below decks covered with

hard materials (wood, marble, tiles,.). For cabins locatedbelow sport rooms or dance floors, a normalized impactsound pressure level is to be kept below 45 dB.

Table 1 : Owner and guest area


LocationsHarbour Sea

Ng = 1 Ng = 2 Ng = 3 Ng = 1 Ng = 2 Ng = 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


34/166

Pt E, Ch 6, Sec 5


Table 2 : Sound insulation indexes Rw

3 COMF VIB





Measurements are to be taken in the vertical direction. Incabins, offices or other small size rooms, measurements areto be 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).

The noise measurements are to be measured in all passen-

ger spaces, each measuring point covering less than 15 m2.

In addition to measurements in vertical direction, measuringpoints in horizontal direction, e.g. transverse and longitudinaldirections, are to be measured on one point on each deck.


3.2.1 Vibration levels corresponding to the vibration grade gare provided in Tab 3according to the ISO 6954 (the limitslisted below are applicable for any directions).

4 COMF +

4.1 Application

4.1.1 Optional COMF +notation represents an increase ofthe comfort rating with the additional performance indexrequirements. They are additional to the applicable require-ments given for yachts in articles [2] and [3].

Note 1: The present Article may also be applied, after special study,to passenger ships.

4.1.2 Prior to granting of the COMF+ notation, COMF-NOISEnotation is to be obtained.

4.1.3 Following COMF+ performance index may begranted separately:

COMF+ Sound insulation index COMF+ Impact index

COMF+ Emergence

COMF+ Intermittent noise

COMF+ Intelligibility.

4.2 Data processing - Analysis

4.2.1 For Noise: Results are to be given on a table in globalvalues (dB(A) or dB for insulation measurements). Uponrequest of the Society, they may be presented on a table giv-

ing the third octave band analysis (case of emergence).



Tests are to be conducted in the conditions described in Ch6, Sec 1, [3.3] and [2.1.1].

Specific additional conditions are described in the relevantCOMF+index requirements.


The location of the measuring positions is selected in

accordance with [2.1.2] for COMF+index:

COMF+Sound Insulation index

COMF+Impact index

COMF+Emergence.

4.4 COMF + Sound insulation index

4.4.1 Sound insulation index between discotheques,show lounge and passenger cabins

Due to the potential low frequency noise, transmittedthrough floors or bulkheads, the sound index requirement is

to be considered as the sum of this R'w index + the adapta-tion 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 4.

Table 3 : Owner and guest area






Cabin to public spacesdesigned for loud music

63 60 58

Overall frequency-weighted r.m.s. velocity (mm/s) values from 1Hz to 80Hz

LocationsHarbour Sea

Ng = 1 Ng = 2 Ng = 3 Ng = 1 Ng = 2 Ng = 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


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Pt E, Ch 6, Sec 5


Table 4 : Sound insulation indexes R'w+C

for discotheques and show lounge

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 this L'nw index + the adapta-tion term CIas described in ISO 717-2.

The adaptation term CI added to the L'n index is to be

below any impact comfort class requirements listed in[2.4.1].

4.6 COMF + Emergence

4.6.1 In the measured spectrum, no component in terms ofthird octave band is to emerge of more than 8 dB(A) fromthe two adjacent components, except if the amplitude ofthe corresponding component is more than 5 dB(A) belowthe general global sound pressure level, as the emergencemay be considered as drowned in the global noise.

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, with

regard 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 noisemeasuring program including:

the complete procedure of measurements

the exhaustive list of system includes, where applicable:

- 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 (seeNote 1) is to be above 0,60 (for each public space, meas-urements are to be carried out in different locations, each

measuring point covering less than 40 m2).

The Society may accept a lower number of points or a mod-

ification of the point distribution for specific cases.

4.8.2 An Intelligibility noise measuring program is to besubmitted to the Society, prior to measurement test.

Note 1: The evaluation of the Rapid Speech Transmission Index

(RASTI) has been standardised in IEC 60268-16.


Cabin to discothequesand show rooms 64 62 59


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Part E

Additional Class Notations

Chapter 7

REFRIGERATING INSTALLATION (REEFER)


SECTION 2 ADDITIONAL REQUIREMENTS FORNOTATIONREF-CARGO

SECTION 3 ADDITIONAL REQUIREMENTS FORNOTATIONREF-CONT

SECTION 4 ADDITIONAL REQUIREMENTS FORNOTATIONREF-STORE
http://p/Paper%20to%20be%20used/reference.pdfhttp://p/Paper%20to%20be%20used/reference.pdfhttp://p/Paper%20to%20be%20used/reference.pdfhttp://chapter07/PartFChap07Sect04.pdfhttp://chapter07/PartFChap07Sect03.pdfhttp://chapter07/PartFChap07Sect02.pdfhttp://chapter07/PartFChap07Sect01.pdf


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Pt E, Ch 7, Sec 1



1 General

1.1 Application

1.1.1 The following additional class notations are assigned,in accordance with Pt A, Ch 1, Sec 2, [6.9], to ships withrefrigerating installations complying with the applicablerequirement of this Chapter:

REF-CARGOfor installations related to carriage of cargo

REF-CONT for installations related to carriage of con-

tainers

REF-STORE for installations related to preservation ofships domestic supplies

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:

AIRCONT for ships fitted with a controlled atmosphereplant on board

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 equipment

of such plants have been recognised as suitable to per-mit quick-freezing of fish in specified conditions.

However, in general, these notations may be only granted toships with the notation REF-CARGO.

1.2 Temperature conditions

1.2.1 Cargo space conditions

The minimum internal temperature or the temperaturerange for which the notation is granted is to be mentionedin 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 tempera-ture, geographical or seasonal limitations, etc., as applicable.

1.2.2 Container conditions

For 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 system

Direct 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 system

Indirect 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 system

Direct air cooling system is the system by which the refrig-eration is obtained by circulation of air refrigerated by an aircooler.

1.3.4 Refrigerant

Refrigerant is a cooling medium which is used to transmitand maintain the cool in the refrigerated chamber.

1.3.5 Brine

Brine 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 unit

A refrigerating unit includes one or more compressorsdriven by one or more prime movers, one condenser and allthe associated ancillary equipment necessary to form anindependent 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.


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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 conditionsUnless 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 conditionsThe 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