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Daniel 3818 LNG Liquid Ultrasonic Meter Installation Manual Section 2: Mechanical installation
3-9000-771Rev A May 2012
Field hydrostatic pressure testing 21
2.4 Field hydrostatic pressure testing
The Daniel 3818 LNG Liquid Ultrasonic Flow Meter can be hydro-tested without any special
preparations. The transducers are not exposed to the process pressure and can remain installed
in the meter.
The liquid ultrasonic meter pressure containing parts include but are not limited to the
transducer housings. These pressure containing parts are pressure tested while attached to the
meter body as a completed ultrasonic meter assembly.
The hydrostatic test is verification of the pressure containing capability of the liquid ultrasonic
meter pressure containing parts and the seals that seal them. Perform a visual inspection of the
meter and visually inspect the meter and leak test the flanges.
LEAKAGE OR PRESSURE CONTAINING PARTS FAILURE
Use precautions to eliminate hazards to personnel in the event of leakage or failure of
the liquid ultrasonic meter pressure containing parts or failure of the test equipment
and to prevent over-pressurization during the test procedure.
Failure to do so may result in injury to personnel or cause damage to the equipment.