A boiler must be taken off-line before it can be inspected.
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A manhole cover can weigh more than 50 lb, and significant i…
A manhole cover can weigh more than 50 lb, and significant injury and/or damage can occur if it is rapidly pulled in by ___ inside the boiler during removal.
Gate valves offer no restriction to flow when wide open.
Gate valves offer no restriction to flow when wide open.
Foaming causes corrosion of heat transfer surfaces.
Foaming causes corrosion of heat transfer surfaces.
Gate valves offer no restriction to flow when wide open.
Gate valves offer no restriction to flow when wide open.
Under all circumstances, electrical equipment should never b…
Under all circumstances, electrical equipment should never be de-energized before maintenance work is performed.
In low pressure steam boilers, the lowest visible part of th…
In low pressure steam boilers, the lowest visible part of the gauge glass must be placed a minimum of 1″ above the lowest permissible water level.
Flame failures in gas-fired boilers are commonly caused by _…
Flame failures in gas-fired boilers are commonly caused by ___.
Flame failures in gas-fired boilers are commonly caused by _…
Flame failures in gas-fired boilers are commonly caused by ___.
If the stack height is over ___’ or if an extremely large br…
If the stack height is over ___’ or if an extremely large breeching and stack combination causes excessive draft, a damper can be located in the breeching close to the stack.