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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