MIL-HDBK-1164
Table 26
Maintenance Checklist for Fire Hydrants
Inspection
Action
Frequency (1)(2)
Dry-barrel
Check drain valve to be sure it opens.
A
hydrants
Where ground water level rises into barrel,
A
plug drain valve and dewater barrel by a
pump.
Wet-barrel
Check packing glands and valve seats;
A
hydrants
repair as necessary.
Pit-type hydrants
Check for water accumulation; dewater as
A
necessary.
All hydrants
On dead ends
Flush; check barrel after flushing.
A
Flush; check barrel after flushing.
A
Not on dead
ends
Check water flow.
A
Repair as necessary; if main shut down is
V
required, notify fire department.
In winter
Check for freezing; thaw if necessary.
W (3)
M (4)
Leakage tests
Inspect all places where leaks might occur;
A
repair as necessary.
Valve parts
Operating
Check for rounded corners; replace as
A
nut
necessary; lubricate.
Nozzle threads
Check for damage; replace as necessary.
A
Chains
Check for paint fouling; clean.
A
Flow tests
Determine hydrant flow.
A
(1) W-Weekly; M-Monthly; A-Annually; V-Variable, as conditions may indicate.
(2) The frequencies shown are suggested frequencies that may be modified by local
command, as individual installation conditions warrant.
(3) Weekly near important structures.
(4) Monthly elsewhere.
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