Is it harmful to the level gauge if it is not removed during the hydrostatic test?
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Is it harmful to the level gauge if it is not removed during the hydrostatic test?
Repost: Actually, there’s no need to add it. Because the boiler needs to be filled with water before the hydrostatic test, it is necessary to open the vent valve at the top of the boiler until water flows out, and then to leave it undisturbed for 24 hours. Make sure it is full of water. A water level gauge is not needed at this time. During the hydrostatic test, since it is a overpressure test, even after installing the water level gauge, the shut-off valve in front of it must be closed to prevent damage to the glass panel of the gauge. Therefore, a water level gauge is not required for the hydrostatic test. http://bbs.hcbbs.com/viewthread.php?tid=441587&page=1#pid2378978pid2378978
The valve needs to be closed during maintenance; it is not required to be installed during manufacturing
During the hydrostatic test, it is not necessary to remove the water level gauge; for extra safety, it can be isolated using a valve.
It is possible not to remove it; it depends on whether the hydrostatic test pressure of the level gauge itself is greater than the test pressure of the equipment.
Yes, it doesn’t matter whether it’s removed or not. During the hydrostatic test, we can also test the valve and flange of the pressure transducer for the level gauge together, which is beneficial for future operations as well. The level gauge we choose meets the standards and will not be damaged as a result of the hydrostatic test
Our unit also has a new boiler. During the hydrostatic test, the boiler manufacturer wanted to isolate the water level gauge, but I didn’t agree. Because during the normal operation of the boiler, the water level gauge is connected to the main body of the boiler. At the same time, I personally think that the quality of the water level gauge is also very important. In abnormal conditions of the boiler, overpressure can occur. It should have the same pressure resistance as the boiler.
During the hydrostatic test, since it is a overpressure test, even after installing the water level gauge, the shut-off valve in front of it must be closed to prevent damage to the glass plate or quartz tube of the gauge. Therefore, a water level gauge is not required for the hydrostatic test.