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Bugger me, I passed the Keogh Barracks circa 1980, at which time there was no cold water. The toilets were being flushed with scalding hot water. You couldn't wash yourself without causing yourself deep burns. The whole place seems to be a collosal building services clusterfuck.
No, they don't, IF they're continuously maintained, i.e, corrosion inhibitor levels checked and maintained, water make-up monitored. The PSA (who dat?) published a series of definitive manuals on the dark arts, before some clueless gobshites decided to entrust the works to the lowest bidder incompetent contractors. A certain system I knew had had the chemical treatment neglected for some time; opening a drain valve at the lowest point caused a long black sausage of magnetite sludge to ooze out of the pipes before any water appeared. The black shite was the corrosion products that had formerly been the inside surfaces of the pipes. It clogged everything.
The district heating systems were mostly installed in the days of central coal-fired, or heavy-oil fired, boiler rooms, when there'd usually be a MTHW or steam distribution system with tube-in-shell calorifiers in each out building. Most hospitals and government sites had something similar. Since North Sea Gas and condensing modular gas boilers arrived, it has made more sense to have localized gas-fired boiler plant and discard the distribution systems with their unavoidable standing heat losses.
Not sure if Aldershot is still on a district heating system but IIRC the district system was decommissioned some years ago because of leaking pipes (don't they all?). Certainly on my travels there are only a very few district systems still operational.
No, they don't, IF they're continuously maintained, i.e, corrosion inhibitor levels checked and maintained, water make-up monitored. The PSA (who dat?) published a series of definitive manuals on the dark arts, before some clueless gobshites decided to entrust the works to the lowest bidder incompetent contractors. A certain system I knew had had the chemical treatment neglected for some time; opening a drain valve at the lowest point caused a long black sausage of magnetite sludge to ooze out of the pipes before any water appeared. The black shite was the corrosion products that had formerly been the inside surfaces of the pipes. It clogged everything.
The district heating systems were mostly installed in the days of central coal-fired, or heavy-oil fired, boiler rooms, when there'd usually be a MTHW or steam distribution system with tube-in-shell calorifiers in each out building. Most hospitals and government sites had something similar. Since North Sea Gas and condensing modular gas boilers arrived, it has made more sense to have localized gas-fired boiler plant and discard the distribution systems with their unavoidable standing heat losses.
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