Purpose of Hydrostatic Testing
Hydrostatic testing verifies that a pipeline can safely withstand its design operating pressure and checks for leaks at joints, welds, and fittings before commissioning.
Standard Procedure
1. Isolate the test section with blind flanges.
2. Fill with clean water, purging all air.
3. Pressurize to 1.5× design pressure.
4. Hold for minimum 24 hours.
5. Monitor pressure gauge — any drop indicates a leak.
6. Document test certificate with gauge readings.
Safety Precautions
Ensure pressure relief valves are functional. Clear personnel from test zone during pressurization. Use calibrated gauges with recent certification.