P.U.(A)
5/70
FACTORIES
AND MACHINERY (STEAM BOILER AND
UNFIRED PRESSURE VESSEL)
REGULATIONS, 1970
PART II - STEAM BOILERS
Regulation
10. Essential fittings.
(1) Every steam boiler
shall be provided with-
(i) two or more safety
valves, at least one of which shall be of the direct spring-loaded
type:
Provided that any steam
boiler having a heating surface of one hundred square feet or
less may have only one
safety valve, in which case it shall be of the direct spring-loaded
type;
(ii) two water gauges:
Provided that any steam
boiler having an evaporative capacity of less than three hundred
pounds of steam per hour
from and at two hundred and twelves degrees Fahrenheit may
have only one water gauge,
in which case not less than two suitable test cocks shall be
fitted in place of the
second water gauge;
(iii) a steam pressure
gauge;
(iv) a blown down valve or
cock;
(v) two feed pumps or
alternatively one feed pump and one injector:
Provided that any steam
boiler having a heating surface of one hundred and fifty square
feet or less or any steam
boiler fitted with automatic controls which "fail to safety" may be
fitted with one feed pump;
Provided further that
where two or more steam boilers are coupled together the number
of feed pumps or injectors
required shall be as approved by the Chief Inspector;
(vi) a main steam stop
valve;
(vii) a feed check valve;
(viii) an Inspector's test
pressure gauge attachment;
(ix) a fusible plug in
each furnace or combustion chamber:
Provided that any steam
boiler fired with liquid or gaseous fuel shall not be required to
have a fusible plug;
(x) a low-water alarm;
except that a low water alarm shall not be required for any steam
boiler which is fired with-
(a) solid
fuel and generation steam at a pressure of 250 pounds per square inch
or less; or
(b) liquid
or gaseous fuel and fitted with a low water fuel cut-out.
(xi) a low-water fuel
cut-out where such steam boiler is fired with liquid or gaseous fuel;
(xii) the manufacturer's
or maker's name plate; and
(xiii) a registration
plate.
(2) This
regulation shall not apply to any economiser or any superheater.
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