IMO I782E-1983 CODE FOR THE CONSTRUCTION AND EQUIPMENT OF SHIPS CARRYING LIQUEFIED GASES IN BULK (INCORPORATING AMENDMENTS 1 TO 4).pdf

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1、CODE FOR THE CONSTRUCTION AND EQUIPMENT OF SHIPS CA- LIQUEFIED GASES IN BULK 1983 EDITION INTERNATIONAL MARITIME ORGANIZATION CODE FOR THE CONSTRUCTION AND EQUIPMENT OF SHIPS CARRYING LIQUEFIED GASES IN BULK 1983 Edition Third Supplement (incorporating first and second Supplements) I List of Medical

2、 First Aid Guide (MFAG) numbers for products covered by the Gas Carrier Code MFAG numbers which apply to products in chapter XIX, Summary of Minimum Requirements, of the Code are given in the table on page 2 of this Supplement for information. The numbers refer to the Medical Firsr Aid Guide for Use

3、 in Accidents involving Dangerous Goods. Amendments to chapters Vlll and XV of this Code The Maritime Safety Committee adopted resolutions MSC.32(63) and MSC.34(63) at its sixty-third session in May 1994. By resolution MSC.32(63) the Committee adopted changes to the International Gas Carrier Code th

4、at were accepted on 1 January 1998, and will come into force on 1 July 1998. Changes to chapters Vlll and XV of the Gas Carrier Code were adopted by resolution MSC.34(63), and these changes will also take effect on 1 July 1998 when the changes to the International Gas Carrier Code come into force. T

5、he text of these changes to chapters Vlll and XV begins on page 3 of this Supplement. Amendment to chapter XIX of this Code The Maritime Safety Committee adopted resolutions MSC.59(67) and MSC.60(67) at its sixty-seventh session in December 1996. By resolution MSC.59(67) the Committee adopted change

6、s to the International Gas Carrier Code that were accepted on 1 January 1998 and will come into force on 1 July 1998. A change to chapter XIX of the Gas Carrier Code was adopted by resolution MSC.60(67), and will also take effect on 1 July 1998 when the changes to the International Gas Carrier Code

7、come into force. The change is: in column f of the table, the entry “I” for the product “Butadiene” is replaced by ”I + T”. Copyright 0 IMO 1998 (Sales number: 1782E) Printed in the United Kingdom by lntype Libra SUPPLEMENT TO CHAPTER XIX - SUMMARY OF MINIMUM REQUIREMENTS a The MFAG numbers shown be

8、low apply to products in the table of minimum requirements as amended by the amendments adopted by MSC 40 (May 1979). and they are provided for information on the emergency procedures to be applied in the event of an incident with the products covered by the Gas Carrier Code. Where any of the produc

9、ts listed are carried at low temperatures from which frostbite may occur, MFAG No. 620 is also applicable. b 0 z Vinyl chloride Vinyl ethyl ether 1086 340 1302 330 a Product name Acetaldehyde Isopropylamine I 122 1 I 320 Methane (LNG) Methylacetylene- DroDadiene mixture Ammonia, anhydrous Butadiene

10、Butane Butane/propane mixtures Butylenes Chlorine Methyl bromide Diethyl ether Propane 119781 310 Dimethylamine Propylene 110771 310 Ethane Propylene oxide I 1280 I 365 Refrigerant gases I - I350 (see notes) Ethyl chloride Ethylene Sulphur dioxide 1 1079 I 635 Ethylene oxide Ethylene oxide/ propylen

11、e oxide mixture (max. 30% w/w ethylene oxide) Vinylidene chloride. I 1303 I 340 * These products are also covered by the IBC Code. Isoprene To reference the table, the following footnote may be inserted at the bottom of page 107 of the Gas Carrier Code with an asterisk reference to paragraph 14.9: *

12、 Reference is made to the Medical First Aid Guide for Use in Accidents involving Dangerous Goods (MFAG), which includes the MFAG numbers of products covered by the Code and the emergency procedures to be applied in the event of an incident. MFAG numbers related to products covered by the Gas Carrier

13、 Code are given in a supplement to this Code. 2 AMENDMENTS ADOPTED BY RESOLUTION MSC.34(63) IN MAY 1994 1 Existing chapter XV is replaced by the following: “CHAPTER XV - FILLING LIMITS FOR CARGO TANKS 15.1 General 15.1.1 the reference temperature, except as permitted by 1 5.1.3. 15.1.2 The maximum l

14、oading limit (LL) to which a cargo tank may be loaded should be determined by the following formula: where: No cargo tanks should have a higher filling limit (FL) than 98% at LL = FL LL = loading limit expressed in percent, which means the maximum allowable liquid volume relative to the tank volume

15、to which the tank may be loaded; FL = filling limit as specified in 1 5.1.1 or 1 5.1.3; PR = relative density of cargo at the reference temperature; and PL = relative density of cargo at the loading temperature and pressure. 1 5.1.3 The Administration may allow a higher filling limit (FL) than the l

16、imit of 98% specified in 1 5.1.1 at the reference temperature, taking into account the shape of the tank, arrangements of pressure relief valves, accuracy of level and temperature gauging and the difference between the loading temperature and the temperature corresponding to the vapour pressure of t

17、he cargo at the set pressure of the pressure relief valves, provided the conditions specified in 8.2.1 7 are maintained. 1 5.1.4 For the purposes of this chapter only, “reference temperature“ means: (a) the temperature corresponding to the vapour pressure of the cargo at the set pressure of the pres

18、sure relief valves when no cargo vapour pressure/temperature control as referred to in chapter VI1 is provided; (b) the temperature of the cargo upon termination of loading, during transport, or at unloading, whichever is the greatest, when a cargo vapour pressure/temperature control as referred to

19、in chapter VI1 is provided. If this reference temperature would result in the cargo tank becoming liquid-full before the cargo reaches a temperature corresponding to the vapour pressure of the cargo at the set pressure of the relief valves required in 8.2, an additional pressurerelieving system comp

20、lying with 8.3 should be fitted. 3 1 5.1.5 The Administration may allow type C tanks to be loaded according to the following formula provided that the tank vent system has been approved in accordance with 8.2.18: where: 11 = FlF LL = loading limit as specified in 15.1.2; Fl = filling limit as specif

21、ied in 1 5.1.1 or 1 5.1.3; PR = relative density of cargo at the highest temperature which the cargo may reach upon termination of loading, during transport, or at unloading, under the ambient design temperature conditions described in 7.1.2; and p = as specified in 15.1.2. This paragraph does not a

22、pply to products requiring a type 1G ship. 15.2 Information to be provided to the master The maximum allowable loading limits for each cargo tank should be indicated for each product which may be carried, for each loading temperature which may be applied and for the applicable maximum reference temp

23、erature, on a list to be approved by the Administration. Pressures at which the pressure relief valves, including those valves required by 8.3, have been set should also be stated on the list. A copy of the list should be permanently kept on board by the master. 15.3 Chapter XV applies to all ships

24、regardless of the date of construction.“ The following words are added at the end of existing paragraph 8.2.17: “at the maximum allowable filling limit (FL)“. The following new paragraphs 8.2.18 and 8.2.19 are added after existing paragraph 8.2.17: “8.2.18 The adequacy of the vent system fitted on t

25、anks loaded in accordance with 15.1.5 is to be demonstrated using the guidelines developed by the Organization A relevant certificate should be permanently kept on board the ship. For the purposes of this paragraph, “vent system“ means: (a) the tank outlet and the piping to the pressure relief valve

26、; (b) the pressure relief valve; (c) the piping from the pressure relief valve to the location of discharge to the atmosphere and including any interconnections and piping which joins other tanks. 8.2.19 Paragraphs 8.2.1 7 and 8.2.18 apply, where applicable, to all ships regardless of the date of co

27、nstruction.“ I I Refer to the guidelines to be developed by the Organization. 4 CODE FOR THE CONSTRUCTION AND EQUIPMENT OF SHIPS CARRYING LIQUEFIED GASES IN BULK 1983 EDITION INCORPORATING AMENDMENTS 1 TO 4 INTERNATIONAL MARITIME ORGANlZATlON London, 1983 First published in 1983 by the INTERNATIONAL

28、 MARITIME ORGANIZATION 4 Albert Embankment, London SE1 7SR Printed by lntype Libra, London 16 18 20 19 17 15 ISBN 92-801-1 165-5 IMO PUBLICATION I I Sales number: 1782E I Copyright 0 International Maritime Organization 1983 NOTE Amendments approved by the Maritime Safety Committee at its thirty-eigh

29、th, fortieth. forty-second and forty-eighth sessions in 1978. 1979, 1980 and 1983 have been incorporated in this edition of the Code. Throughout the Code amendments are indicated by reference numbers in the text which have the following meaning: 1) First set of amendments adopted 19 April 1978 2) Se

30、cond set of amendments adopted 8 May 1979 3) Third set of amendments adopted 20 May 1980 4) Fourth set of amendments adopted 14 June 1983 At the time of publication, all of the amendments incorporated are applicable to new ships. The amendmenrs also apply to existing ships except where they have bee

31、n annotated “E-NA meaning that the amendment is not applicable to existing ships. CONTENTS 1 CODE FOR THE CONSTRUCTION AND EQUIPMENT OF SHIPS CARRYING LIQUEFIED GASES IN BULK Preamble . CHAPTER I - GENERAL . 1.1 Purpose . 1.2 Application 1.3 Hazards . 1.4 Definitions i 1 . 5 Equivalents 1.6 Survey r

32、equirements4 1.7 Review of the Code . CHAPTER II -SHIP SURVIVAL CAPABILITY AND CARGO TANK LOCATION . 2.1 General . 2.2 Freeboard and stability 2.3 Damage and flooding assumptions 2.4 Survival requirements 2.5 Standard of damage to be applied 2.7 Special consideration for small ships 2.6 Location of

33、cargo tanks CHAPTER Ill -SHIP ARRANGEMENTS . 3.1 Segregation of the cargo area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2 Accommodation. service and control station spaces . 3.3 Cargo pump rooms and cargo compressor rooms . 3.4 Cargo control rooms 3.5 Acces

34、s to spaces in the cargo area . 3.6 Air-locks 3.7 Bilge. ballast and fuel oil arrangements 3.8 Bow or stern loading and discharge arrangements . CHAPTER IV - CARGO CONTAINMENT 4.1 General 4.2 Definitions . 4.3 Design loads . 4.4 Structural analysis 4.5 Allowable stresses and corrosion allowance Page

35、 7 7 9 9 9 10 10 13 13 15 I 17 I 17 17 18 19 20 21 21 23 23 24 25 25 26 27 28 28 29 29 29 32 34 40 3 Contents 4.6 Supports 4.7 Secondary barrier . 4.8 Insulation 4.9 Materials 4.1 0 Construction and testing 4.1 1 Stress relieving for independent tanks type C . 4.1 2 Guidance formulae for acceleratio

36、n components 4.1 3 Stress categories . CHAPTER V - PROCESS PRESSURE VESSELS AND LIQUID. VAPOUR. AND PRESSURE PIPING SYSTEMS . 5.1 General . 5.2 Cargo and process piping 5.3 Cargo system valving requirements 5.4 Ships cargo hoses . 5.5 Cargo transfer methods CHAPTER VI - MATERIALS OF CONSTRUCTION . 6

37、.1 General . 6.2 Material requirements 6.3 Welding and non-destructive testing CHAPTER VI1 . CARGO PRESSURE/TEMPERATURE CONTROL . 7.1 General . 7.2 Refrigeration systems CHAPTER Vlll . CARGO VENT SYSTEMS 8.1 General . 8.2 Pressure relief systems 8.3 Additional pressure relieving system 8.4 Vacuum pr

38、otection systems . 8.5 Size of valves CHAPTER IX . ENVIRONMENTAL CONTROL FOR CARGO CONTAINMENT SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.1 9.2 Environmental control within cargo tanks and cargo piping systems . Environmental control within the hold spaces (cargo containment s

39、ystems other than independent tanks type C) Environmental control of spaces surrounding independent tanks type C . 9.3 42 43 45 46 48 52 52 53 58 58 58 65 66 66 67 67 68 75 80 80 80 82 82 82 84 84 85 88 88 88 89 4 Contents 9.4 lnerting . 9.5 Inert gas production on board . CHAPTER X - ELECTRICAL ARR

40、ANGEMENTS . 10.1 General . 10.2 Types of equipment . CHAPTER XI - FIRE PROTECTION AND FIRE EXTINGUISHING . 1 1.1 Fire safety requirements 11.2 Fire water main equipment . 11.3 Water spray system . 1 1.5 Gas-dangerous enclosed spaces . 11.6 Firemens outfits4 . 11.4 Dry chemical powder fire extinguish

41、ing systems CHAPTER XI1 - MECHANICAL VENTILATION IN CARGO AREA . 12.1 Spaces required to be entered during normal cargo handling operations . 12.2 Spaces not normally entered . CHAPTER Xlll - INSTRUMENTATION (GAUGING. GAS DETECTION) 13.1 General 13.2 Level indicators for cargo tanks 13.3 Liquid leve

42、l alarms 13.4 Pressure gauges 13.5 Temperature indicating devices 13.6 Gas detection requirements CHAPTER XIV . PERSONNEL PROTECTION . CHAPTER XV . FILLING LIMITS FOR CARGO TANKS . 15.1 General 15.2 Information to be provided to the master CHAPTER XVI . USE OF CARGO AS FUEL CHAPTER XVll -SPECIAL REQ

43、UIREMENTS . 17.1 General 17.2 Personnel protection 17.3 Materials of construction . 17.4 Independent tanks2 . 17.5 Refrigeration systems . 17.6 Deck cargo piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I. . .

44、. 89 89 91 91 91 94 94 94 95 96 97 98 99 99 100 101 101 101 102 102 1 103 103 106 108 108 108 109 111 111 111 111 112 112 112 I 5 Contents 17.7 Bow or stern loading and discharge lines . 17.8 Exclusion of air from vapour spaces 17.9 Moisture control . 17.10 Inhibition 17.1 1 Permanently installed to

45、xic gas detectors . 17.12 Special requirements for individual gases . 17.1 3 Vapour return connexions21 . 17.1 4 Toxic products2 . 17.1 5 Flame screens on vent outlets2 . 17.16 Maximum allowable quantity of cargo per tankz1 17.17 Submerged electric cargo pumps4 . CHAPTER XVlll -OPERATING REQUIREMENT

46、S 18.1 Information required to be carried . 18.2 Compatibility . 18.3 Personnel training . 18.4 Entry into spaces 18.5 Carriage of cargo at low temperature . 18.6 Protective clothing 18.7 Systems and controls . 18.8 Cargo transfer operations . 18.9 Additional operating requirements . CHAPTER XIX -SU

47、MMARY OF MINIMUM REQUIREMENTS . . . . . . . . . . . . APPENDIX . MODEL FORM OF CERTIFICATE OF FITNESS FOR THE CARRIAGE OF LIQUEFIED GASES IN BULK 2 RESOLUTION A.328(IX) . CODE FOR THE CONSTRUCTION AND EQUIPMENT OF SHIPS CARRYING LIQUEFIED GASES IN BULK RESOLUTION MSC.7(48) . RECOMMENDATION FOR CHEMI

48、CAL TANKERS AND GAS CARRIERS CONSTRUCTED BEFORE 1 JULY 1986 3 . 113 . 113 . 113 . 113 . 113 . 114 . 122 . 122 . 123 . 123 . 123 . 124 . 124 . 124 . 124 . 125 . 125 . 125 . 126 . 126 . 126 . 127 . 129 . 133 . 134 . 4 GUIDELINES FOR THE UNIFORM APPLICATION OF THE SURVIVAL REQUIREMENTS OF THE BULK CHEM

49、ICAL CODE AND THE GAS CARRIER CODE . 136 MSClCIRC.220 . 141 5 TESTING OF SHORE INSTALLATION CARGO HOSES . 6 CODE FOR THE CONSTRUCTION AND EQUIPMENT OF SHIPS CARRYING LIQUEFIED GASES IN BULK PREAMBLE 1 The Code has been developed to provide an international standard for the safe carriage by sea in bulk of liquefied gases and certain other substances listed in Chapter XIX, by prescribing the design and constructional features of ships involved in such carriage and the equipment they should carry so as to minimize the risk to the ship, its crew and to the environment having