Page 41 - AERB Annual Report 2020

A.3 Pressurized Heavy Water Reactor (PHWR) Subsequently, NPCIL application seeking
clearance for 'Initial Fuel Loading' (IFL), part
(i) KAPP-3&4 and RAPP-7&8 borated heavy water (65 Te) addition to storage,
cooling and moderator systems for ushing and
Safety Review of KAPP-3 addition of Heavy Water to PHT into the reactor
of KAPP-3 was reviewed and Clearance for the
Safety review of various submissions for the IFL part of the application was issued on February
twin units of 700 MWe PHWRs at Kakrapar, 28, 2020. Clearance for addition of 65Te Heavy
Gujarat (KAPP-3&4) and Rawatbhata, Rajasthan water to Moderator systems and addition of
(RAPP-7&8) was in progress. Review Groups in Heavy water to PHT systems of KAPP-3 was
AERB (i.e. In-House Working Groups, Task granted on March 18, 2020 with a regulatory hold
Force, PDSC) are progressively reviewing point (RHP) for addition of Heavy water to PHT.
relevant submissions on Safety analyses, and After review of NPCIL submissions towards
reports like Stress analysis, Environmental clearing regulatory hold point, permission for
Qualication (EQ), Independent Verication and Heavy water addition to PHT system was granted
Validation (IV&V), Commissioning Procedures, on April 06, 2020. KAPP-3 was also granted
Technical Specications for Operation, KAPP-3 Licence under the Factories Act, 1948.
applications for various stages of commissioning
& related submissions including Commissioning NPCIL application seeking Authorization of
reports. Majority of the safety review for KAPP- KAPP-3 for Bulk addition of heavy water to
3&4 was conducted by AERB in-house review moderator system with minimum specied boron
groups. level in heavy water to prevent reactor criticality,
First Approach to Criticality (FAC), Low Power
After completion of Primary Heat Transport Reactor Physics Tests & Experiments was
(PHT) System, Hot Conditioning and Light Water reviewed and after approval by the Board of
Commissioning (LWC) of KAPP-3, and AERB, permission for bulk addition of Heavy
satisfactory safety review of NPCIL application, water to Moderator System of KAPP-3 was
test results and associated submissions, AERB granted on July 07, 2020. Subsequently,
issued permission for draining of light water permission for FAC and low power reactor
from PHT system on December 16, 2019 and physics experiments was granted on July 17, 2020.
draining of light water from Moderator system on KAPP-3 achieved Criticality on July 22, 2020.
January 13, 2020.

KAPP-3&4 Main Plant Area

7
AERB Annual Report 2020