Commonwealth Consolidated Regulations

NAVIGATION (CONSTRUCTION) REGULATIONS 1968 - REG 169

A boiler or superheater in a ship shall:

(a)

when first put into service in the ship — be capable of withstanding, for a period of not less than thirty minutes, an hydraulic pressure equal to:

(i)

where the maximum working pressure of the boiler or superheater is more than one hundred pounds per square inch — the sum of a pressure of fifty pounds per square inch and a pressure greater by one-half than that maximum working pressure; or

(ii)

where the maximum working pressure of the boiler or superheater is one hundred pounds per square inch or less — that maximum working pressure multiplied by two; and

(b)

at any other time — be capable of withstanding, for a period of not less than thirty minutes, an hydraulic pressure equal to:

(i)

where the boiler or superheater is of such dimensions and form that an adequate internal examination of it can be made — a pressure greater by one-half than the maximum working pressure of the boiler or superheater; or

(ii)

in any other case — the pressure that the boiler or superheater was required by the last preceding paragraph to be capable of withstanding when it was put into service in the ship for the first time.