Preventive Maintenance Work Plan Chart Page 7
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35Preventive Maintenance Work Plan
Frequency Key
W – Weekly
M - Monthly Q - Quarterly
SA- Semi-Annually A- Annually SST - Seasonal Start-Up SSH - Season Shut Down
Heat Exchanger
Critical Tasks
Frequency Status
Date Completed Initials
Observe unit in operation, note any unusual noises and/or vibrations.
M
Inspect for leaks and/or corrosion.
M
Ensure that temperatures are within proper parameters.
M
Verify and calibrate all associated controls under load, verify proper sequences of
A
operation.
Inspect gauges and verify proper operation.
A
Inspect all safety devices for proper operation (vacuum breakers, hi-temperature safeties, relief
A
valves, etc).
Inspect condensate drain system and clean as necessary.
A
Inspect steam traps for proper operation.
A
Check inlet and outlet water temperatures to measure performance of heat exchanger.
A
Overhaul if necessary.
Visually inspect shell and tubes for fouling and/or corrosion. Assess tube condition.
If Necessary
Remove vessel hand-hole covers and inspect for any abnormal conditions (i.e. - scale,
If Necessary
corrosion, etc.)
Clean shell and tubes chemically, if required/necessary.
If Necessary
*Non-destructive testing should be performed on the heat exchangers every three years.
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