| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. WATER SUPPLY AND PRESSURE | |||
| A1 | Primary water source pressure at main connection ≥ 3.5 bar (0.35 MPa) minimum Acceptance: Minimum 3.5 bar sustained pressure; supply sufficient for simultaneous operation of 2 hydrants | Cl. 4.1 — Water supply source | OK NC NA HOLD |
| A2 | Pressure gauge installed and functional at main supply point Acceptance: Gauge calibrated, visible, marked 0-6 bar or higher | Cl. 4.2 — Instrumentation | OK NC NA HOLD |
| A3 | Water supply line isolation valve (main isolation) accessible and labeled Acceptance: Isolation valve within 1 m of inlet, lockable, clearly labeled 'Main Isolation' | Cl. 5.1 — Valves and controls | OK NC NA HOLD |
| A4 | Check valve installed to prevent backflow from system to main supply Acceptance: Check valve functional, permits forward flow only, tested with flow reversal test | Cl. 5.2 — Anti-siphon protection | OK NC NA HOLD |
| A5 | System capacity documentation (storage tank volume, pipe diameter) provided and verified Acceptance: Design documentation shows flow rate ≥ 20 litres/minute per hydrant; storage per building classification | Cl. 3.1 — System Design | OK NC NA HOLD |
| A6 | Pressure relief valve set and sealed at appropriate pressure (if applicable) Acceptance: Relief valve set ≤ 6 bar, tamper-sealed, certificate of setting provided | Cl. 5.3 — Safety devices | OK NC NA HOLD |
| B. HYDRANT INSTALLATION AND ACCESSIBILITY | |||
| B1 | Hydrants spaced at maximum 30 m intervals along exit routes and common areas Acceptance: Spacing measured, max 30 m from any point in protected area; accessible from all directions | Cl. 6.1 — Spacing and location | OK NC NA HOLD |
| B2 | Hydrant height mounted 1.1 to 1.5 m above floor level Acceptance: Vertical height 1.1-1.5 m measured from finished floor to hydrant outlet axis | Cl. 6.2 — Mounting height | OK NC NA HOLD |
| B3 | Hydrant outlet diameter 38 mm (1.5 inch) — verifies ISO/IS standard coupling Acceptance: Outlet measured 38 mm ± 1 mm; ISO/Storz coupling compatible; outlet cap in place when not in use | Cl. 7.1 — Outlet dimensions | OK NC NA HOLD |
| B4 | Protective cage/cover installed around hydrant where risk of damage exists Acceptance: Cage installed in high-traffic areas; designed to allow access within 5 seconds | Cl. 8.1 — Protection | OK NC NA HOLD |
| B5 | Identification signage and color marking (red) visible on hydrant cabinet/location Acceptance: Red cabinet or red frame; label reading 'HYDRANT'; location clearly marked on building plans | Cl. 8.2 — Identification and marking | OK NC NA HOLD |
| B6 | Hose reel (if applicable) installed with smooth operation and hose inspection Acceptance: Reel rotates smoothly; hose 25-30 mm diameter; hose condition inspected, no cracks/splits | Cl. 9.1 — Hose reel systems | OK NC NA HOLD |
| B7 | Hose length sufficient (minimum 30 m for typical building) and stored without kinks Acceptance: Hose fully extended reaches all protected areas; no permanent deformation or kinks | Cl. 9.2 — Hose length and storage | OK NC NA HOLD |
| B8 | All shut-off nozzles and couplings functioning smoothly without leakage Acceptance: Nozzle opens/closes with one hand; no water seepage when closed; coupling tightness verified | Cl. 7.2 — Nozzles and couplings | OK NC NA HOLD |
| C. PIPING INSTALLATION AND INTEGRITY | |||
| C1 | Piping material approved (GI, MS, or HDPE) with thickness per design standards Acceptance: GI pipe: min 2 mm wall thickness; MS pipe: min 1.6 mm; HDPE: certified; mill certificates available | Cl. 10.1 — Pipe material specification | OK NC NA HOLD |
| C2 | Pipe size verified as per design (minimum 50 mm diameter for main risers) Acceptance: Main riser ≥ 50 mm ID; sub-mains ≥ 38 mm ID; measured and documented | Cl. 10.2 — Sizing | OK NC NA HOLD |
| C3 | All pipe joints welded or threaded with proper fittings (no compression fittings for main) Acceptance: Welds inspected (visual + hydrostatic); threads tightened with pipe wrench; leak test at 5 bar min | Cl. 10.3 — Jointing methods | OK NC NA HOLD |
| C4 | System pressure tested at 1.5 × maximum working pressure for 1 hour minimum Acceptance: Test pressure ≥ 5.25 bar (1.5 × 3.5 bar); no visible leaks; pressure drop < 0.2 bar/hour | Cl. 11.1 — Pressure test | OK NC NA HOLD |
| C5 | All pipes adequately supported with clamps/brackets at ≤ 2 m intervals Acceptance: Clamps spaced ≤ 2 m for horizontal runs; ≤ 1 m at risers; no sagging or movement | Cl. 10.4 — Support and securing | OK NC NA HOLD |
| C6 | Drain valve installed at lowest point(s) of system; accessible and labeled Acceptance: Drain valve within 1 m of lowest point; manual ball valve; labeled 'DRAIN'; pipe drains to sump/floor | Cl. 10.5 — Drainage provision | OK NC NA HOLD |