BLG 4/18
ANNEX 13
Page 3
DRAFT AMENDMENTS TO THE CODE FOR THE CONSTRUCRION AND EQUIPMENT OF SHIPS CARRYING LIQUEFIED GASES IN BULK (GC CODE)
Chapter V
Process pressure vessels and liquid, vapour, and pressure piping systems
5.4 Ship's cargo hoses
Existing paragraph 5.4.3 is replaced by the following:
"5.4.3 For cargo hoses installed on board ships on or after [date of entry into force of amendments] [1 July 2002], each new type of cargo hose, complete with end-fittings, should be prototype-tested at a normal ambient temperature with 200 pressure cycles from zero to at least twice the specified maximum working pressure. After this cycle pressure test has been carried out, the prototype test should demonstrate a bursting pressure of at least 5 times its specified maximum working pressure at the extreme service temperature. Hoses used for prototype testing should not be used for cargo service. Thereafter, before being placed in service, each new length of cargo hose produced should be hydrostatically tested at ambient temperature to a pressure not less than 1.5 times its specified maximum working pressure but not more than two-fifths of its bursting pressure. The hose should be stencilled or otherwise marked with the date of testing, its specified maximum working pressure and, if used in services other than the ambient temperature services, its maximum and minimum service temperature, as applicable. The specified maximum working pressure should not be less than 10 bar gauge."
