Air Locks (Emergency, Material, Personnel)

1
  •    BHAVINI
  •      Prototype Fast Breeder Reactor
  •      6
  •     Nuclear Division

Description

Airlock doors provide airtight joints that prevent the leakage of air from Reactor Containment Building (RCB) to the outside atmosphere.

There are three main types of air locks:

  1. Material Airlock (MAL) doors
  2. Personnel Airlock (PAL) doors along with Airlock Tube
  3. Emergency Airlock (EAL) doors along with Airlock Tube

Each of the above stated doors are 2 in Nos. (6 in total), one at the entry outside the airlock chamber and one at the entry from the airlock chamber into the RCB. These are interlocked in such a way that only one door can operate at a time & each door can be operated only when the other is in closed condition.

Construction details

Material: IS2062

Critical aspects

  • Maximum Leak did not exceed the allowable limit of 1.5% in one day when internally pressurized to 30KPa to simulate accident conditions
  • Designed to meet Seismic Category-1 and Safety Class-2 requirements.