## Hydrostatic
test an Construction Activity in which pressure vessels such as pipelines,
Process Piping , gas cylinders, boilers , Fire Extinguishers, Can be
tested for strength and leaks.
# Filling the vessel or pipe system
with a liquid, usually water, which may be dyed to aid in visual leak
detection. It’s performed to expose defective materials that have
missed prior detection, ensure that any remaining defects are insignificant
enough to allow operation at design pressures, expose possible leaks and serve
as a final validation of the integrity of the constructed system. ASME B31.3
requires this testing to ensure tightness and strength.
# Buried HP
O&G pipelines are tested for strength by pressurising them to at least 125%
of their maximum allowable working pressure (MAWP) at any point along their
length.
# It’s a type of pressure test that works by completely filling the
component with water, removing the air contained within the unit, and
pressurizing the system up to 1.5 times the design pressure limit the of the
unit.
# The pressure is then held for a specific amount of time to visually inspect the system for leaks. Visual inspection can be enhanced by applying either tracer or fluorescent dyes to the liquid to determine where cracks and leaks are present.
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