The mission of the AERB is to ensure the use of ionising radiation and nuclear energy in India does not cause undue risk to the health of people and the environment.

AERB eNewsletter July-September 2018

Safety Review & Regulation

Consenting of Nuclear and Radiation Facilities

  • Renewed the Operating Licences of Narora Atomic Power Station (NAPS) under the Atomic Energy Act, 1962 and licence under the Factories Act, 1948, up to June 30, 2023. These licences were valid till June 30, 2018 and July 12, 2018 respectively. The renewal of Licence was based on a multi-tier safety review of the facility and recommendations.
  • Renewed the Operating Licences for Fast Breeder Test Reactor (FBTR) and Interim Fuel Storage Building (IFSB) which were valid up to June 30, 2018, till June 30, 2023. The renewal was based on detailed safety review of the facility and recommendations.
  • Based on satisfactory review, AERB granted the Excavation Consent for pump house of Units- 5&6 of Kudankulam Nuclear Power Project on July 24, 2018.
  • The licence for operation of HWP-Hazira under Factories Act, 1948 from July 31, 2018 till January 31, 2019.
  • Permission for fuel loading in KAPS Unit -1 after completion of En-Masse Coolant Channel Replacement (EMCCR) activities.
  • Licence for operation of Versatile Solvent Synthesis Pilot (VSSP) facility at HWP Tuticorin granted under Factories Act, 1948

Safety Review of Root Cause Analysis of Pressure Tubes leakage events at Kakrapar Atomic Power Station (KAPS) -1&2

KAPS-1&2 units had experienced the events of leak from pressure tube (PT) in coolant channel on March 11, 2016 & July 01, 2015. Preliminary examination of the affected pressure tube confirmed the presence of number of through wall cracks. Based on the findings of preliminary examination, AERB had asked a plan for detailed examination of PT and completion of the investigation for establishing the root cause of coolant channel leak expeditiously. Affected pressure tube had been removed from the core and transported to the laboratory at BARC for further examination. The investigation on the cause of the corrosion spots seen on KAPS PTs points to the possible presence of some trace impurity in the CO2 gas, which is used in the Annulus Gas System of coolant channels in KAPS units.

Similar inspection on PTs were performed as precautionary measure in all the other PHWRs in the country, after KAPS events. These inspections have confirmed that the localised corrosion phenomena was limited to KAPS-1&2 reactors alone. As an abundant precaution, AERB has directed to other operating PHWRs to strengthen the quality assurance checks on the carbon dioxide gas being used in Annulus Gas System.
The Board of AERB reviewed the investigations and R&D studies were undertaken to arrive at the Root Cause Analysis of Pressure Tubes leakage events at KAPS -1&2. En-Masse Coolant Channel Replacement (EMCCR) activities were taken up in KAPS-1&2 units. These activities have been completed in KAPS-2 unit and its start-up activities were also reviewed by AERB. The reactor has attained criticality at 2:22 am on 17.09.2018.

AERB Board meeting in progress

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