5. During an dimensioning accidental event, the integrity and functionality of depressurising piping and valves is to be maintained for the required period of time in order to ensure that success- ful depressurization can be performed.

6. Blow down system of regasification system is to be arranged to vent from all parts containing more than 400kg of hydrocarbon inventory to vent system.

206. Pressure relieving systems

1. Where the suction drum installed to supply the liquefied gas to the booster pump, it shall be pro- vided with a relief valve. The pressure relief valve is to be of adequate capacity for the case where the suction drum is exposed to fire or the outlet of the booster pump is blocked.

2. All pipelines or components which may be isolated in a liquid fill condition should be provided with relief valves.