Page 48 - AERB Bulletin English

Regulatory Activities
Safety Studies and Research Activities

Safety Studies and R&D Activities at SRI, Kalpakkam and Mumbai Headquarters

AERB recognises the importance of Safety Analysis & important developmental studies were taken up
Research in support of its regulatory function. Safety by AERB and completed during this year. Various
analysis and research activities are carried out by studies were undertaken during 2019 in following
AERB as a part of its regulatory activities. Several areas:

THERMAL HYDRAULICS SAFETY STUDY SEVERE ACCIDENT PROBABILISTIC
STUDIES SAFETY STUDIES
In support of regulatory review, number of studies on
thermal hydraulics of nuclear and radiation facilities were
A number of studies on A probabilistic safety
undertaken.
severe accident assessment assessment (PSA) of a
• A detailed 3-D transient heat transfer analysis was of nuclear and radiation nuclear and radiation
facilities were undertaken. facility provides a
carried out using COMSOL for proposed FBTR fast comprehensive and
flux experimental facility (FFEF) for irradiation of • Calculation of Radiation structured approach
radioactive samples. view Factor of 37 Pin Fuel for identifying failure
• Thermal transient analysis of CORAL high-level waste Bundle for estimation of scenarios and deriving
raffinate for estimating the maximum temperature radiation view factors numerical estimates of
of raffinate waste solution during unavailability of between pins of bundle the risks to workers and
members of the public.
primary cooling water. and pin to PT (pressure
• Analyses related to 700 MWe PHWR to evaluate the tube). The review of Shutdown
effect of inadvertent opening of the Passive Decay Heat • Developed AERB Source and Low Power PSA
Removal System valve during normal operation. Term Estimation Tool report of MAPS-1&2 has
for KKNPP and MAPS been completed.
• 3-D model of concrete shield was developed in multi-
reactors and integrated
physics software COMSOL for Assessment of the
with the in-house
cooling coil capability in ISOMED.
developed AERB tool.

AERB continued
to contribute in
development of
PRABHAVINI, DAE
computer code to
address Design Basis
Accidents (DBA) and
Design Extension
Conditions (DEC) in the
Indian nuclear reactors.

Temperature Field Slices with Modified Coil & Water Cooling

46
AERB BULLETIN 2019
AERB BULLETIN 2019