Carpenters
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Electricians
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Fitters
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Gardeners
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Fitters and plumbers
Without the boiler house the Hospital would cease to function. The boilers
are necessary to provide constant running hot water, heating and air temperature
to every General Hospital building.
The Boiler House
There are four boilers in the boiler house. The one steam boiler is decommissioned
as the steam method was superseded by pressurised hot water boilers, of
which there are three. Only one boiler is active at any one time, heating
water under pressure up to 138 degrees Centigrade. Two other boilers are
needed: one to take over in case of failure and one in case a boiler is
being cleaned at the time of failure.
The three functional boilers are oil-fired (diesel) high temperature pressurised
hot water boilers with a capacity of over 12 million BTU (British Thermal
Units). Perhaps astonishingly, one boiler is able to serve every part
of the Hospital complex.
In the boiler house there is a pressurisation unit which puts the hot
water under pressure in the pipes which run throughout the Hospital (the
ring main). However, pressure alone is not enough to circulate the water
and so three powerful pumps are used to push the water out of the boiler
house through a large pipe via the pressurisation unit and circulate the
water around the Hospital to return again via an incoming pipe.