After the mold is installed on the machine,we should first carry out a residual heat on the mold so that the temperature of the mold is almost the same as the temperature of the machine material.
Specifically, the NRC inspection team determined that Westinghouse was not fully implementing its QA program in the area of corrective action associated withincorrect use of material for AP1000 passive residual heat removal heat exchanger(PRHR HX) lower support stiffener plates, identified in an earlier inspection.
自動的に停止してはいても、核反応炉内の残留熱は長期にわたり高温のままである。
Even after automatic shut down, the residue heat in the nuclear plants remains high for a long time.
システムがシャットダウンしたとき、ファンは、60秒間動作を継続し、残留熱を効果的に除去します。
When the system is shutdown, the fan will continue tooperate for 60 seconds to effectively remove residual heat.
連鎖反応はずいぶん前に停止されているので、今は極めて少量の残留熱が生成されている状況だ。
Because the chain reaction has been stopped a long time ago,there is only very little residual heat being produced now.
The increased efficiency of ultrasonic waves allows bonding at low temperatures and in a short time,to avoid mechanical and thermal residual stress on the product, which in turn enables stable, high quality bonding.
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