Liquefied and Chemical Gases covered by the IGC Code
Summary of minimum requirements
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| Product name | UN number | Ship type | Independent tank type C requirements | Control of vapour space within cargo tanks | Vapour detection | Gauging type | MFAG table no. | Special requirements (See IGC Code) |
| Acetaldehyde | 1089 | 2G/ 2PG | — | Inert | F+T | C | 300 | 14.4.3, 14.4.4, 17.4.1, 17.6.1 |
| Amonia, anhydrous | 1005 | 2G/ 2PG | — | — | T | C | 725 | 14.4.2, 14.4.3, 14.4.4, 17.2.1, 17.13 |
| Butadiene | 1010 | 2G/ 2PG | — | — | F | R | 310 | 17.2.2, 17.4.2, 17.4.3, 17.6, 17.8 |
| Butane | 1011 | 2G/ 2PG | — | — | F | R | 310 | |
| Butane-propane mixtures | 1011/ 1978 | 2G/ 2PG | — | — | F | R | 310 | |
| Butylenes | 1012 | 2G/ 2PG | — | — | F | R | 310 | |
| Chlorine | 1017 | 1G | Yes | Dry | T | ' | 740 | 14.4, 17.3.2, 17.4.1, 17.5, 17.7, 17.9, 17.14 |
| Diethyl ether* | 1155 | 2G/ 2PG | — | Inert | F+T | C | 330 | 14.4.2, 14.4.3, 17.2.6, 17.3.1, 17.61, 17.10, 17.11, 17.15 |
| Dimethylamine | 1032 | 2G/ 2PG | — | — | F+T | C | 320 | 14.4.2, 14.4.3, 14.4.4, 17.2.1 |
| Ethane | 1961 | 2G | — | — | F | R | 310 | |
| Ethyl chloride | 1037 | 2G/ 2PG | — | — | F+T | R | 340 | |
| Ethylene | 1038 | 2G | — | — | F | R | 310 | |
| Ethylene oxide | 1040 | 1G | Yes | Inert | F+T | C | 365 | 14.4.2, 14.4.3, 14.4.4, 14.4.6, 17.2.2, 17.3.2, 17.4.1, 17.5, 17.6.1, 17.16 |
| Ethylene oxide-propylene oxide mixtures with ethylene oxide content of not more than 30% by weight" | 2983 | 2G/ 2PG | — | Inert | F+T | C | 365 | 14.4.3, 17.3.1, 17.4.1, 17.6.1, 17.10, 17.11, 17.20 |
| Isoprene* | 1218 | 2G/ 2PG | — | — | F | R | 310 | 14.4.3, 17.8, 17.10, 17.12 |
| Isopropylamine* | 1221 | 2G/ 2PG | — | — | F+T | C | 320 | 14.4.2, 14.4.3, 17.2.4, 17.10, 17.11, 17.12, 17.17 |
| Methane (LNG) | 1972 | 2G | — | — | F | C | 620 | |
| Methyl acetylene-propadiene mixtures | 1060 | 2G/ 2PG | — | — | F | R | 310 | 17.18 |
| Methyl bromide | 1062 | 1G | Yes | — | F+T | C | 345 | 14.4, 17.2.3, 17.3.2, 17.4.1, 17.5, 17.9 |
| Methyl chloride | 1063 | 2G/ 2PG | — | — | F+T | C | 340 | 17.2.3 |
*This cargo is covered also by the IBC code.
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Summary of minimum requirements (Continued)
| a | b | c | d | e | f | g | h | i |
| Product name | UN number | Ship type | Independent tank type C requirements | Control of vapour space within cargo tanks | Vapour detection | Gauging type | MFAG table no. | Special requirements (See IGC Code) |
| Monoethylamine* | 1036 | 2G/ 2PG | — | — | F+T | C | 320 | 14.4.2, 14.4.3, 14.4.4, 17.2.1, 17.3.1, 17.10, 17.11, 17.12, 17.17 |
| Nitrogen | 2040 | 3G | — | — | 0 | C | 620 | 17.19 |
| Pentanes (all isomers)* | 1265 | 2G/ 2PG | — | — | F | R | 310 | 14.4.4, 17.10, 17.12 |
| Pentene (all isomers)* | 1265 | 2G/ 2PG | — | — | F | R | 310 | 14.4.4, 17.10, 17.12 |
| Propane | 1978 | 2G/ 2PG | — | — | F | R | 310 | |
| Propylene | 1077 | 2G/ 2PG | — | — | F | R | 310 | |
| Propylene oxide* | 1280 | 2G/ 2PG | — | Inert | F+T | C | 365 | 14.4.3, 17.3.1, 17.4.1, 17.6.1, 17.10, 17.11, 17.20 |
| Refrigerant gases (see notes) | — | 3G | — | — | — | R | 350 | |
| Sulphur dioxide | 1079 | 1G | Yes | Dry | T | C | 635 | 14.4, 17.3.2, 17.4.1, 17.5, 17.7, 17.9 |
| Vinyl chloride | 1086 | 2G/ 2PG | — | — | F+T | C | 340 | 14.4.2, 14.4.3, 17.2.2, 17.2.3, 17.3.1, 17.6, 17.21 |
| Vinyle ethyl ether" | 1302 | 2G/ 2PG | — | Inert | F+T | C | 330 | 14.4.2, 14.4.3, 17.2.2, 17.3.1, 17.6.1, 17.8, 17.10, 17.11, 17.15 |
| Vinylidene chloride* | 1303 | 2G/ 2PG | — | Inert | F+T | R | 340 | 14.4.2, 14.4.3, 17.2.5, 17.6.1, 17.8, 17.10, 17.11 |
*This cargo is covered also by the IBC code.
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Explanatory notes to the summary of minimum requirements
UN Numbers The UN numbers as listed in the table of chapter 19 of the IGC Code are intended for information only.
Vapour detection F — Flammable vapour detection
required (column f) T — Toxic vapour detection
O — Oxygen analyser
F+T — Flammable and toxic vapour detection
Gauging — types I — Indirect or closed, as described in 13.2.2.1 and .2 of the IGC Code
permitted (column g) C — Indirect, or closed, as described in 13.2.2.1, .2 and .3 of the IGC Code
R — Indirect, closed or restricted, as described in 13.2.2.1, .2, .3, and .4
of the IGC Code
Refrigerant gases Non toxic and non-flammable gases such as:-
dichlorodifluoromethane (1028)....................….. R12
dichloromonofluoromethane (1029).........…….... R21
dichlorotetrafluoroethane (1958)...............…...... R114
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monochlorodifluoromethane (1018)............….... R22
monochlorotetrafluoroethane (1021).............….. R124a
monochlorotrifluoromethane (1022).........…....... R13
Unless otherwise specified, gas mixtures containing less than 5 per cent total acetylenes may be transported with no further requirements than those provided for the major components.
MFAG (Medical First Aid Guide) numbers are provided for information on the emergency procedures to be applied in the event of an incident involving the products covered by the IGC Code. Where any of the products listed are carried at low temperature from which frostbite may accur, MFAG no. 620 is also applicable.
Appendix 3
Ship/Shore Safety Check List
This Appendix comprises appropriate parts of the Ship/Shore Safety Check List, Guidelines relating to the Check List and a specimen letter for issue by the terminal representative to masters of tankers at terminals.
SHIP/SHORE SAFETY CHECK LIST
Ship's Name:
Berth: Port:
Date of Arrival: Time of Arrival:
INSTRUCTIONS FOR COMPLETION:
The safety of operations requires that all questions should be answered affirmatively by clearly ticking ( \/ ) the appropriate box. If an affirmative answer is not possible, the reason should be given and agreement reached upon appropriate precautions to be taken between the ship and the terminal. Where any question is considered to be not applicable, then a note to that effect should be inserted in the remarks column.
A box in the columns 'Ship' and 'Terminal' indicates that checks should be carried out by the party concerned.
The presence of the letters A, P or R in the column 'Code' indicates the following:
A — any procedures and agreements should be in writing in the remarks column of this checklist or other mutually acceptable form. In either case, the signature of both parties should be required.
P — in the case of a negative answer, the operation should not be carried out without the permission of the Port Authority.
R — indicates items to be re-checked at intervals not exceeding that agreed in the declaration.
PART 'A' BULK LIQUID GENERAL
| General | Ship | Terminal | Code | Remarks |
| 1. Is the ship securely moored? | c | c | R | Stop cargo at: — kts wind vel. Disconnect at: — kts wind vel. Unberth at: — kts wind vel. |
| 2. Are emergency towing wires correctly positioned? | c | c | R | |
| 3. Is there safe access between ship and shore? | c | c | R | |
| 4. Is the ship ready to move under its own power? | c | c | PR | |
| 5. Is there an effective deck watch in attendance on board and adequate supervison on the terminal and on the ship? | c | c | R | |
| 6. Is the agreed ship/shore communciation system operative? | c | c | AR | |
| 7. Has the emergency signal to be used by the ship and shore been explained and understood? | c | c | A | |
| 8. Have the procedures for cargo, bunker and ballast handling been agreed? | c | c | AR | |
| 9. Have the hazards associated with toxic substances in the cargo being handled been identified and understood? | c | c | ||
| 10. Has the emergency shutdown procedure been agreed? | c | c | A | |
| 11. Are fire hoses and fire fighting equipment on board and ashore positioned and ready for immediate use? | c | c | R | |
| 12. Are cargo and bunker hoses/arms in good condition, properly rigged and appropriate for the service intended? | c | c | ||
| 13. Are scuppers effectively plugged and drip trays in position, both on board and ashore? | c | c | R | |
| 14. Are unused cargo and bunker connections properly secured with blank flanges fully bolted? | c | c | ||
| 15. Are sea and overboard discharge valves, when not in use, closed and visibly secured? | c | c | ||
| 16. Are all cargo and bunker tank lids closed? | c | c | ||
| 17. Is the agreed tank venting system being used? | c | c | AR | |
| 18. Have the P/V vents been operated using the checklift facility and the operation of the vent verified? | c | c | ||
| 19. Are hand torches of an approved type? | c | c |
PART -A' BULK LIQUID GENERAL (continued)
| General | Ship | Terminal | Code | Remarks |
| 20. Are portable VHF/UHF transceivers of an approved type? | c | c | ||
| 21. Are the ship's main radio transmitter aerials earthed and radars switched off? | c | c | ||
| 22. Are electric cables to portable electrical equipment disconnected from power? | c | c | ||
| 23. Are all external doors and ports in the accommodation closed? | c | c | R | |
| 24. Are window-type air conditioning units disconnected? | c | c | ||
| 25. Are air conditioning air intakes which may permit the entry of cargo vapours closed? | c | c | ||
| 26. Are the requirements for use of galley equipment and cooking appliances being observed? | c | c | R | |
| 27. Are smoking regulations being observed? | c | c | R | |
| 28. Are naked light regulations being observed? | c | c | R | |
| 29. Is there provision for an emergency escape? | c | c | ||
| 30. Are sufficient personnel on board and ashore to deal with an emergency? | c | c | R | |
| 31. Are adequate insulating means in place in the ship/shore connection? | c | c | ||
| 32. Have measures been taken to ensure sufficient pumproom ventilation? | c | c | R | |
| 33. If the ship is capable of closed loading, have requirements for closed operations been agreed? | c | c | R | |
| 34. Has a vapour return line been connected? | c | c | ||
| 35. If a vapour return line is connected, have operating parameters been agreed? | c | c | ||
| 36. Are ship emergency fire control plans located externally? | c | c | ||
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