FACTORIES AND MACHINERY (STEAM BOILER AND
UNFIRED PRESSURE VESSEL)
Regulation 62. Working test.
Every unfired pressure vessel inspected for the first time and every other unfired pressure vessel
the authorised safe working pressure of which has been altered shall be tested under working
conditions of maximum fluid flow to the satisfaction of an Inspector. Where the accumulation of
pressure during such test exceeds ten per centum of the authorised safe working pressure of the
pressure vessel the area of the safety valves shall be considered insufficient and a certificate of
fitness for that working pressure shall not be granted.
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