We are commissioned to perform a systematic inspection of fire hydrants and main valves in order to determine system capacity, sectors with possible leaks, operating condition and prepare a data bank for the analysis and prioritize the maintenance work to be performed.

Type of inspection

Annual inspection : Inspection performed only once a year.
Bi-annual inspection : Inspection performed twice a year (spring and autumn).
Inspection three times a year : Spring, autumn and winter inspection.

Fire hydrant inspection methods:

System inspections using fire hydrants will be performed in the daytime. For each hydrant, the technician will fill out an inspection sheet listing the following
information :

  1. Hydrant number on plan and hydrant

  2. Civic number closest to fire hydrant, and sector (e.g. Residential)

  3. Hydrant make, model and diameter

  4. Accessibility of fire hydrant

  5. Accessibility to operating nut on hydrant supply pipe valve

  6. Description of supply pipe valve operating condition

  7. Number and diameter of hose outlets

  8. Hose outlet and cap condition

  9. Hose outlet thread pitch

  10. Flange height from ground

  11. Condition of paint

  12. Distance between water level inside hydrant and ground level

  13. Hydrant depth, i.e. distance between boot and flanges

  14. Description of any interior damage for each part, for instance :

  • Defective retaining chains or cables

  • Defective operating sleeve

  • Cracked barrel

  • Defective bearing

  • Leaking gate-type disc

  • Twisted stem

  1. Description of operating condition for various mechanisms

  2. Draining system operating condition

  3. Verification of barrel and cap water tightness when hydrant valve is open

  4. Static and dynamic pressure readings, calculation of actual flow when dynamic pressure is 20 psi (138 KPa), taking into account the type of elbow installed
    (e.g. 45o and 90o) and outlet-related friction coefficient

  5. Acoustic survey of noises from a leak

  6. Water aesthetics

  7. Inspection date and time, and inspector's name

  8. Supply pipe visibility, position and distance from hydrant, and valve box material condition (once a year)


In addition, at the time of inspection, the technician performs the following operations:

  • When the fire hydrant supply pipe valve is accessible, the technician operates the valve in order to ensure it is open and operational (once a year)

  • Hose outlets and caps are lubricated

  • Drainage of the water in the fire hydrants that does not drain in order to avoid frost (at time of annual or autumn inspection)

  • The fire hydrant and pipe section between hydrant and water main are flushed.

Winter inspection method

This is a fire hydrant mechanical and visual inspection including :

  1. water tightness of the water network with leakage detector

  2. water tightness of the main valve (gate valve)

  3. verification of the ground water level

  4. verification of the upper mechanism

  5. verification of the internal components such as shaft, housing and coupling

  6. verification of the structure and external state



A computerized report containing the inspection and analysis of the fire hydrants and isolation valves within the aqueduct system is delivered to the customer by email.

All our reports, proposals and invoices can be sent by email.

Consult the valves inspection.

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