5.6.1 SHORT TERM SHUT-DOWN(HOURS)
Switch OFF burner and pump.
The burner will stop firing, post-purge and then stop.
5.6.2 MEDIUM TERM SHUT-DOWN(DAYS)
1.
Shut the main steam valve.
2.
Leave Pump switch ON.
3.
Switch Boiler switch OFF.
4.
Shut off fuel supply.
Note: Ensure the boiler water treatment levels for dissolved oxygen are within the specified limits.
5.6.3 LONG TERM SHUT-DOWN (WEEKS)
To store the boiler in a corrosion-free situation there are two practical solutions:
1.
Fully flood the boiler to exclude as much air as possible
Increase chemical dosing (consult water treatment provider for guidance)
Recommended maximum 3 month “water wedged”
2.
Drain the boiler completely.
Remove all handholes.
Fit Silicon Gel moisture bags to the gas side and the water side of the boiler and seal all
openings.
Additionally you could introduce a form of convection heating to the gas/oil and water side.
A very effective solution is to install a small heater.
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