quench tank मीनिंग इन हिंदी

Both a working PORV with quench tank and separately the containment building with sump provided two layers of passive safety.
However the valve mechanically failed causing the PORV quench tank to fill, and the relief diaphragm to eventually rupture into the containment building.
The pilot-operated relief valve at TMI-2 was designed to shut automatically after relieving excessive pressure inside the reactor into a quench tank.
Some improvements made ( not all in all designs ) are having three sets of emergency diesel generators and associated emergency core cooling systems rather than just one pair, having quench tanks ( large coolant-filled tanks ) above the core that open into it automatically, having a double containment ( one containment building inside another ), etc.