Regulation 54. Pressure gauge.

                                   P.U.(A) 5/70

FACTORIES AND MACHINERY (STEAM BOILER AND

                  UNFIRED PRESSURE VESSEL)

                           REGULATIONS, 1970

          PART III - UNFIRED PRESSURE VESSELS

Regulation 54. Pressure gauge.

(1) Every pressure gauge fitted to an unfired pressure vessel shall-

(i) not be less than three inches in diameter across the dial:

Provided that where the external shell diameter of the unfired pressure vessel is less than

twelve inches and the pressure in such vessel is not more than one hundred and fifty

pounds per square inch, such gauge shall not be less than two inches in diameter;

(ii) be graduated from zero to not less than one and one-third times and not more than

twice the authorised safe working pressure of the pressure vessel to which it is fitted;

(iii) have the authorised safe working pressure clearly marked in red on the dial;

(iv) be provided with a single stop pin at the lowest pressure reading; and

(v) accurately show the pressure within a tolerance of plus or minus two per centum of

the authorised safe working pressure of the pressure vessel to which it is attached.

(2) Where a pressure gauge cock is fitted, the handle thereof shall be parallel with the bore of the

cock when the cock is open.

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