55
Checklist for boiler system: Steam boiler
Key
■
O = Monitoring, check for unusual noises, odours, smells, other unusual phenomena
■
T = Function check on equipment components, including monitoring
Operation, maintenance and inspec-
tions/tests:
72
hrs
Months Type of tests (examples)
1 3 6 12
Safety equipment against excessive
pressure (safety valves)
O T Vent. Other function checks and monitor-
ing in accordance with national regula-
tions are possible.
Water level indicator T Blow through only with boilers at p < 32
bar
Blow down and drainage devices T By activation
Valves O T In accordance with manufacturer's speci-
fications
Feedwater control O T
Low water level protection (LWL) O T Function check by reducing the water
level down to the switching points
Steam pressure and temperature indica-
tor (pressure gauge)
O Comparison with limiters and controllers
Pressure limiter O T Function check by increasing the pres-
sure up to the switching points
Temperature limiter O T Change in set value/test keys
Circulation limiter O T
Devices for protecting the water quality O T
(1st
)
T
(2n
d)
1. Comparison of measured values to re-
liable samples
2. Checking by a qualified specialist
Protection systems O T Electrical and mechanical checks by a
qualified specialist
Pressurised parts (pipes, inspection
ports, flanges, gaskets, connections, etc.)
O Check for tightness
Pressure and temperature controllers O T Comparison
Feedwater supply O T
Water quality T To specifications of EN 12953-10
Heat supply O T Carried out by a suitably qualified spe-
cialist at least once per year, in line with
the manufacturer's operating manual
Tab. 27
Checklist
Recommendations for operation, maintenance and testing in accordance with EN 12953-6
5837984
Appendix
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