NFPA 25 Fire Tank Inspections
NFPA-25 requires that your water based fire suppression system water storage tank be inspected every 5 years. We provide these inspections with our submersible ROV. As these water tank systems often cannot be locked-out, the ROV can provide your inspection without the personal risk of using a diver. At this time we provide NFPA 25 Fire Tank Inspections in San Diego, Riverside, and Orange Counties.
Raw and Recycled Water Tanks
A.W.W.A. (M-42 CH. 8) recommends inspecting your non-potable tanks every 3-5 years. This is particularly important if your facility is epoxy coated steel and over 5 years old. This is when the first signs of coating deterioration often manifest themselves in the tank. These inspections can help with your tank maintenance program by allowing you to properly schedule the next re-coat, or possibly even conduct repairs. These tanks can also be inspected by our non-potable dive team.
Some of the issues frequently documented during inspections include:
- Coating defects
- tie-wire/rebar corrosion
- leaks
- structural issues
- spalling
- rodent intrusion
- material defects in Hypalon or Polypropylene covers or liners.
It is not uncommon to have previously unknown problems identified during routine tank inspections. Coating failures, leaks in both concrete and steel facilities, corrosion issues, components in need of repair, root intrusion, animal remains, vandal intrusion and structural damage from seismic activity are just some of the issues identified by Municipal Diving during routine inspections. We have documented, on several occasions, reservoirs with significant leaks (30-250 gpm) that showed no evidence of water leakage in the under-drainage system.
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- Animal remains in a water tank.
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- Dense corrosion and metal loss on a floor weld seam
Identifying needed service and repairs before they reach the critical stage can save tens of thousands of dollars and allows for budgeting to address these issues before they become major projects. Establishing a baseline of a facility’s condition can also help plan for future maintenance.