The metallographic analysis shows that the metallurgical structure is proper. The results of internalpressuretest indicate that the hot tap structure can work safely.
对间断焊焊接接头的金相分析表明其金相组织正常,内压试验结果表明该结构能安全运行。
2
A test and pressure relief valve should be installed to assure relief of internal pressure prior to servicing and as a visual indication of trap operation.
应该安装一个测试和压力安全阀,确保内部压力能够在维修前得到释放,并作为疏水阀工作的直观显示。
3
Test by internalpressure (simulation of decompression).