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Regulation 76. Opening up boiler or pressure vessel.



                                    P.U.(A) 5/70
FACTORIES AND MACHINERY (STEAM BOILER AND
                   UNFIRED PRESSURE VESSEL)
                             REGULATIONS, 1970
         PART IV - MISCELLANEOUS PROVISIONS

Regulation 76. Opening up boiler or pressure vessel.

(1) No person shall open up or require or permit any other person to open up any steam boiler or
unfired pressure vessel for repair, cleaning or for any other purpose unless precautions have
been taken to ensure that such steam boiler or unfired pressure vessel is relieved of all pressure.

(2) No person shall enter or require or permit any other person to enter any steam boiler or
unfired pressure vessel opened up for repair, cleaning or for any other purpose unless and until:
(a) it is cooled sufficiently to prevent the person entering from being burned or overcome
by heat;

(b) it is free from hazardous fumes and vapours; and

(c) in respect of a steam boiler or steam receiver, all steam and hot water communication
with any other steam boiler or steam receiver under steam has been effectively
disconnected.

(3) For the purposes of sub-paragraph (c) of paragraph (2) of this regulation, "effectively
disconnected" means either:

(i) the removal of any boiler stop valve, feed check valve, blow-down valve or in the case
of a steam receiver the receiver stop valve; or

(ii) the removal of appropriate piping between such boiler or steam receiver and the
source of pressure; or
 
(iii) the insertion of a substantial blank flange between the stop valve of such boiler or
steam receiver and the source of pressure; or
 
(iv) the padlocking of not less than two stop valves located between such boiler or steam
receiver and the source of pressure:

Provided that in respect of an unfired pressure vessel which requires to be loaded and
unloaded at frequent intervals, such unfired pressure vessel may be considered as
effectively disconnected if not less than two stop valves between the unfired pressure
vessel and the source of pressure have been closed and suitable precautions have been
taken to ensure that neither shall be opened while such loading or unloading is taking
place.



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