CPR1000机组试验创新及实施

The Innovation and Implementation of CFTRVO Test for CPR1000 Units

阳江核电工程是中国CPR1000堆型设备国产化率很高的核电项目,承担着设备国产化的重要使命。安全注入系统(RIS)/安全壳喷淋系统(EAS)的调试是国产化设备中最为棘手的问题之一。RIS/EAS泵、电机满足相应的安全准则是核安全的重要组成部分,由于阳江项目RIS/EAS系统首次采用国产化泵和电机,存在各种问题,如泵扬程不足,机封漏水,导流壳存在飞边毛刺,电机振动值高等。随着机组调试的推进,核岛穹顶和地坑状态的完善对于问题的解决越来越不利。鉴于以上背景,将开盖冷态试验的部分试验方法和过程加以创新优化,在舍掉穹顶和地坑的前提下成功验证EAS/RIS泵的性能。该试验方法的创新在保证核安全的前提下,节省了大量成本,对于其他系统和项目的调试也具有一定的借鉴意义。

The Yangjiang Nuclear Power Project undertakes the mission of equipment localization and has the highest equipment localization rate. The debugging of RIS/EAS pumps and motors is a most tough issue. The EAS/RIS system is important not only for the project proceeding nodes, such as nuclear circuit cleaning （NCC） and cold functional test with reactor vessel open （CFTRVO）, but also for the cold functional test （CFT）, hot functional test （HFT） and pre-criticality test （PCT）. The key of the nuclear safety is that the EAS/RIS pumps and motors should meet the related nuclear safety standards. However, as the first such project that adopts China-made pumps and motors, some problems exist in the Yangjiang project, such as insufficient water head, bad airproof, burrs in hydraulic parts and high vibrations. Along with the debugging progressing, the completion of the dome and pits of the reactor room has been making it difficult to solve these problems. Therefore, the open vessel CFT is optimized so that the performance of EAS/RIS pumps is verified successfully before the completion. The optimization, which can ensure the nuclear safety, has saved the costs substantially and can provide reference for the debugging of other systems.