| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. TEST PROCEDURE & EXECUTION | |||
| A1 | Test procedure documentation (Method, duration, acceptance criteria) Acceptance: Procedure defined; test duration ≥2 hrs minimum; pressure drop limit ≤5% per 2 hrs | Formalized testing approach | OK NC NA HOLD |
| A2 | Initial pressurization to test pressure (Gradual increase, monitor for leaks) Acceptance: Pressure increased in increments; halted if leakage detected; recorded every 5-10 psi | Controlled pressure ramp-up | OK NC NA HOLD |
| A3 | Pressure stabilization at test pressure (Hold for 30 minutes before data collection) Acceptance: System held at test pressure for 30 mins; then measurement phase starts | Allow system to stabilize thermally | OK NC NA HOLD |
| A4 | Data collection interval and frequency (Readings every 15-30 minutes) Acceptance: Pressure and time recorded at regular intervals (15-30 min); temperature noted | Monitor pressure over test duration | OK NC NA HOLD |
| B. PRESSURE MONITORING & LEAKAGE DETECTION | |||
| B1 | Initial pressure reading at start of test (Time 0, Pressure 0 min) Acceptance: Pressure reading recorded at exact test start time; gauge zero-checked | Baseline measurement | OK NC NA HOLD |
| B2 | Pressure readings at regular intervals (15/30 min intervals for ≥2 hrs) Acceptance: Readings recorded at intervals; data sheet shows time and pressure values | Track pressure change over time | OK NC NA HOLD |
| B3 | Visual leakage inspection (Walk around system, look for water seepage) Acceptance: No visible water seepage from joints; dry connections; any wetness noted with location | Identify leak locations | OK NC NA HOLD |
| B4 | Pressure drop calculation (Loss in kg/cm² over test duration) Acceptance: Pressure drop ≤5% of test pressure over 2 hrs = PASS; >5% = FAIL | Quantify system leakage | OK NC NA HOLD |
| C. LEAK LOCATION & REMEDIATION | |||
| C1 | Leak detection method (Visual, soap solution, sound detection) Acceptance: Leaking joint identified; location marked; severity documented (drip/stream) | Identify specific leak points | OK NC NA HOLD |
| C2 | Leak location documentation (Marked on system drawing with photos) Acceptance: Location marked; photo taken; details recorded on system drawing | Record leak position for repair | OK NC NA HOLD |
| C3 | Repair method & re-test approval (After repair, system re-pressurized) Acceptance: Failed joint repaired/replaced; system re-tested; result documented | Verify repair effectiveness | OK NC NA HOLD |