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Fire-water tanks
Fire-water tanks require a continuous lining matched to standby immersion service, tank geometry, inspection access and reserve-water quality requirements. This engineering guide frames the application intent without replacing the current system specification or product technical data sheet.
Use and application
The application intent is waterproofing of fire-water tanks. Start by qualifying the substrate, exposure, service level and maintenance constraints. Rayston Epoxy Plus, Polyurea Rayston and Paintchlore are typical reference products for this application. Compare the current Products and Systems documentation, and use the associated application context at Drinking water reservoirs to keep the scope distinct.
01
Standby immersion and tank shell
Fire-water tanks hold water for long standby periods with periodic draw-down, refill and inspection. Concrete shells bring porosity, alkalinity and cracking risk; steel shells need controlled preparation and corrosion management. Wall–floor transitions, joints, pipe penetrations, manways, ladders, overflow weirs and suction points need a continuous, documented detail before the lining route is fixed.
02
Layers and references
Define the sequence from prepared substrate through primer or bond coat, functional membrane or body coat, reinforcement where specified, and protective or finish layer where required. Use the current technical data sheet for preparation, mixing, consumption, thickness, overcoat windows and cure; the Calculator supports quantities, while Systems and the product references establish the applicable route.
03
Common mistakes
- Treating fire-reserve immersion as a generic waterproofing job without checking long-term immersion and cleaning compatibility.
- Omitting manways, suction points, overflow weirs, pipe penetrations and wall–floor transitions from the lining detail.
- Closing the build-up before checking moisture, adhesion, thickness, pinholes and cure under immersion conditions.
04
Operating sequence
1. Record standby immersion duty, water quality constraints, tank dimensions, substrate condition and service scenario. 2. Map joints, manways, penetrations, suction points, overflow weirs and repair zones. 3. Select a compatible route in Systems and verify every layer against the current technical data sheet. 4. Calculate quantities with the Calculator. 5. Approve a representative area, document preparation and application controls, inspect continuity and release the tank only when the project requirements are met.