ARRANGEMENT AND METHOD FOR INTERNAL PRESSURE TESTING OF CORE REACTOR PRESSURE FAILURES

摘要

Pressure testing of an empty nuclear reactor pressure vessel uses a perforated throttle plate or perforated throttle cylinder. The throttle plate or throttle cylinder is sealed to the pressure vessel at the seal ring or at some suitable place. A flow guide plate is mounted associated with the throttle parts to guide the flow of fluid down the walls of the bowl of the pressure vessel. The vessel is filled with fluid and connected in circuit for pressure test or purging operations. Fluid flows in through ports and out through ports. The flow guide, may be of shapped areas, with optimal hydraulic properties, placed oposite ports. USE/ADVANTAGE - Pressurized water nuclear reactor pressure vessels, partic. types WWER-440 and WWER-1000. More flexible to apply, quicker to apply and requires less exposure of personnel to radiation.