Cryogenic funcional testing

+39 02 966 2740

info@fbrcontrol.com

Cryogenic funcional testing

Cryogenic Test is a special test used to test the tightness of the valve (both floating and trunnion versions) at low temperatures from -36°C to -196°C with liquid nitrogen.
The cryogenic valve is tested at the operating pressure and temperature specified by its class.

CRYOGENIC TEST DESCRIPTION
Valve Leak Test

Placement of the valve in the cryogenic tank and verification of all connections.
Slow insufflation of liquid nitrogen in cryogenic tank.
When the required temperature is reached, test gas is fed into the valve at the pressure indicated by the test procedure.
During the test, any leaks to the outside world are detected and quantified by a leak detector, the Sniffer (testing instrument).
Any internal leaks, on the other hand, are detected in the classical way with pressure gauges and bubble counters.
The temperature is kept constant and is monitored by a thermocouple inserted inside the valve, which shows the exact value in °C on a display.
At the end of the test, a report is generated, and the valve is depressurized and gradually brought to room temperature.