Pipe explosion occurred during the pressure testing of high-pressure steam pipes in the power plant
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What are people’s opinions on the pipe explosion that occurred during the pressure testing of the high-pressure steam pipes at Dangyang Thermal Power Plant? Why didn’t the safety valve activate?
During the pressure testing process, the safety valve should be isolated; what’s the truth behind explosions in power plant steam pipes?
So the safety valve doesn’t protect the pipeline; does that mean the pipeline fails and bursts even without overpressure?
If a pressure test is conducted, the explosive force is not that great, and such situations generally do not occur in steam pipelines. I think it might be due to water accumulation in the pipeline, which wasn’t thoroughly blown out, resulting in instant vaporization. A leak in a high-pressure steam pipe only produces a large amount of mist. But the identification results depend on the **experts. I just hope they don’t choke on the contents of their stomachs.
But the pipeline is first drained of water before steam is introduced; it’s rather abnormal that the safety valve does not activate
A hydrostatic test wouldn’t have such power
Seek the truth – were no issues detected during the pressure test?
Will a hyperpressure test be carried out? The steam temperature is 600 degrees, and the control room is completely destroyed – it’s terrifying
It is very unlikely that a valve will function fine during pressure testing but will develop serious problems in actual operation. This accident revealed problems with the design of the control room; it was located within a hazardous explosion zone and lacked explosion-proof measures. This design must date back to the early 1990s, as the design firm failed to update such drawings in accordance with current standards. In the past, the main steam pipes in our company’s boiler section passed through the windows of the control room, but that setup was removed several years ago. It is hoped that the design institute will develop a intrinsically safe device to deliver to the owner, and that it will also make proper use of Hazop analysis in the design process.