3.18.3.1.3管道更换。拆除连排电动门、连排旁路电动门、连排疏水

3.18.3.1.3 Pipe replacement. <br>Dismantle the continuous row of electric doors, the continuous row of bypass electric doors, and the continuous row of drain pipes for heat preservation. <br>Use a thickness gauge to measure the wall thickness of the pipe and fill in Table 1. <br>If the pipe wall thickness is reduced by more than 1/3, the pipe needs to be replaced. <br>According to the on-site situation, the pipes should be equipped and the grooves should be polished. <br>Weld after the groove is qualified. <br>Contact metallographic personnel for flaw detection, and restore insulation after passing the test.

3.18.3.1.3 pipe replacement.<br>Remove the continuous drainage electric valve, continuous drainage bypass electric valve and continuous drainage drain pipe insulation.<br>Measure the pipe wall thickness with a thickness gauge and fill it in table I.<br>If the wall thickness of the pipe is reduced by more than 1 / 3, the pipe shall be replaced.<br>Prepare pipes and grind grooves according to site conditions.<br>Weld after the groove is qualified.<br>Contact metallographic personnel for flaw detection and restore thermal insulation after passing the inspection.

3.18.3.1.3 Pipeline replacement. Demolition of row electric doors, row bypass electric doors and row drain pipes for thermal insulation. Measure the pipe wall thickness with a thickness gauge and fill in Table 1. If the wall thickness of the pipeline is reduced by more than 1/3, the pipeline needs to be replaced. Match the pipes and polish the groove according to the site conditions. Welding after the groove is qualified. Contact metallographic personnel for flaw detection, and restore heat preservation after passing the test.