22
Checklist for boiler system: Steam boiler
Key
■
O
= Monitor/check for unusual noises, odours, other unusual phenomena
■
T
= Functional testing of equipment, including monitoring
Operation, maintenance and inspec-
tions/tests:
72
hrs
Months
Type of tests (examples)
1
3
6
12
Devices to protect against excess pres-
sure (safety valves)
O
T
Ventilation. Additional functional testing
and monitoring possible, based on na-
tional regulations.
Water level indicator
T
Blow through only with boilers at p < 32
bar
Blow-down and drainage system
T
By activation
Valves
O
T
According to manufacturer's specifica-
tions
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 limit
O
T
Function check by increasing the pres-
sure up to the switching points
Temperature limit
O
T
Change in set value/test keys
Circulation limit
O
T
Devices for protecting the water quality
O
T
(1.)
T
(2.)
1. Comparison of measured values to re-
liable samples
2. Checking by a qualified specialist
Protective systems
O
T
Electrical and mechanical tests by a
qualified specialist
Pressurised parts (pipes, inspection
ports, flanges, gaskets, connections, etc.)
O
Check for leaks
Pressure and temperature controllers
O
T
Comparison
Feedwater inlet
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. 1
Scope and duration of testing
Note
The extent of inspections and time intervals are manu-
facturer's recommendations. As part of the commis-
sioning, these should be matched to the individual sys-
tem as part of the arrangements made with the system
user, the supervisory authority and the manufacturer.
Recommendation
The 6-monthly tests should be conducted in accord-
ance with the applicable regulations (e.g. EN 12953)
by a qualified employee of the manufacturer.
Note
The checklists included in the appendix can be used
as templates.
Checklist
Recommendations for operation, maintenance and testing in accordance with EN 12953-6
5692729
Appendix
