Page 21 - AERB Bulletin English

Safety Upgrades at NPPs Post-Fukushima

Safety assessment of NPPs carried out post  Activities related to indigenous development,
Fukushima accident, has provided assurance testing and qualification of Passive Catalytic
on availability of adequate safety margins and Recombiner Devices (PCRD) addressing the post-
inherent strength in dealing with external hazards. accident hydrogen management needs for the
However, certain safety enhancements were Indian PHWR containments have been completed.
identified for further strengthening the defences PCRDs are being progressively installed in NPPs.
against rare external events exceeding the design
 Technology development of Containment Filtered
bases and enhancing severe accident mitigation
Venting System (CFVS) has been completed. CFVS
capabilities. These actions were classified as short,
has been installed in TAPS-1&2 (BWR), whereas
medium and long term measures/safety upgrades.
installation is in progress in PHWR based NPPs,
Implementations of short and medium term safety
where the requirement has been envisaged.
measures/upgrades have been already completed.
 On-site Emergency Support Centres (OESC) are
AERB is closely monitoring the status of
being constructed in phased manner at all the
implementation of long term measures and the
progress is as follows: NPP sites.

Passive Catalytic CFVS at TAPS-1&2 Experimental Facility
Recombiner Devices for CFVS at TAPS-3&4

Nitrogen Inerting System at TAPS-1&2

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AERB BULLETIN 2019
AERB BULLETIN 2019