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response plans, operational control and responsibility for hardware infrastructure.
protection of personnel providing external services when
they are at the facility, among others. The capabilities of NREMC include, emergency
analysis, assessment of emergency response actions
Based on the directive from AERB, NPPs are & protective actions and communication with all
revising the off-site ERP plans including development of stakeholders. The software systems with on-line DSS,
plant specific EALs and protection strategy based on the source term and radioactivity release assessment,
approved template. environmental monitoring data inputs, video conferencing
5.4 CREATION OF ON-SITE EMERGENCY with other emergency response agencies and trained &
SUPPORT CENTRE AT NPP experienced personnel for NREMC has been established.
NREMC is also activated during the site and off-site
In light of the accident at Fukushima NPPs, AERB emergency exercises conducted at various plants to test
mandated the requirement for establishing the On-Site its mechanism for obtaining information for assessing the
Emergency Support Centre (OESC) at all NPP sites in situation.
the country. This facility will have capability to withstand
earthquake and flood of magnitudes larger than their 5.6 DEVELOPMENT OF DOCUMENTS RELATED
respective design basis for the NPP. The building will be TO EMERGENCY MANAGEMENT
designed with requisite shielding for protected stay of AERB is in the process of consolidating & revising
response personnel for extended duration. AERB, after a
detailed review, accepted the generic guidelines prepared its requirements and guidance for EPR, which presently
by the Advisory Committee for establishing OESC and are addressed in a number of documents and were
had asked NPCIL to submit design basis report for the developed in different timeline over many years. As a
site specific OESC for all NPP sites in accordance with step towards holistic revision, the existing requirements y), NFC
these guidelines. The design of OESCs has been finalized are being consolidated/updated through safety code and
by the utility and the implementation is in progress. safety guides for management of nuclear and radiological
emergency. Safety Code specifies the requirements that
Decision Support System (DSS) for nuclear are to be fulfilled by the licensees and various other
emergencies is intended to provide comprehensive authorities / agencies responsible for management of
and timely information to emergency managers in an nuclear and radiological emergencies, in line with the
emergency situation arising from a nuclear accident. role entrusted to AERB by NDMA through its National Safety Codes/
Based on the radiological monitoring readings of installed Disaster Management Plan (NDMP, 2019).
radiation monitors and meteorological conditions, the Safety Standards
DSS estimates the projected public dose. These estimates Safety code and guides for EPR are being developed
are used to decide appropriate protective action in the taking into account existing EPR requirements,
public domain. A decision has been taken to implement developments including change in approach to public Safety Guidelines/
DSS progressively at all the NPP sites. protection during emergency conditions as elaborated in Safety Guides
5.5 NUCLEAR AND RADIOLOGICAL EMERGENCY ICRP publications, IAEA General Safety Requirements
MONITORING CENTRE (IAEA GSR Part-7), lessons learnt from the Fukushima
Daiichi accident & subsequent safety reviews of
During nuclear emergency, AERB monitors and keeps Indian NPPs and guidance available nationally and Safety Manuals
itself informed about the emergency situation. It reviews internationally.
& assesses the emergency situation, and if required,
These new regulatory documents (Code and Guides)
provides appropriate regulatory support and advice to the are being prepared following a bottom to top-approach.
relevant response agencies. AERB also informs the public Other Publications
and government on the safety significance of events and Necessary supporting documents on areas including
actions being taken. To facilitate this, AERB has instituted development of Emergency Actions Levels (EAL), (TECDOCs/Monographs)
an Emergency Response Monitoring Organisation (AERB- development of protection strategy, conduct of emergency
ERMO) which gets activated during an emergency. The exercise and the template for EPR plans of NPPs have
activities of AERB-ERMO are carried out and coordinated been developed. These documents are being developed
by the Nuclear and Radiological Emergency Monitoring in AERB by expert groups consisting of members from
Centre (NREMC) established at AERB. The centre is AERB, NPCIL, BARC and CMG-DAE. The understanding
equipped with various cells (Communication, Assessment, established in these basis/supporting documents are used
Analysis & Legal) along with necessary software and in a graded manner in the Code and the Safety Guides. Hierarchy of REGDOCs

70 AERB Annual Report 2019

Modified Write up of section 6.1.1
The Safety Document Development Proposal (SDDP) for revision/development of Regulatory
Safety Documents (REGDOC) is prepared by In-House Working Groups (IHWG) of AERB. The SDDPs are
further reviewed by AERB Standing committee for REGDOCs and vetted by AERB Executive Committee
(AERB-EC) prior to review by an Advisory Committee on Nuclear and Radiation Safety (ACNRS) which is an
Apex Committee of AERB for providing advice on the REGDOCs. Based on the recommendation of ACNRS,
SDDP is approved by Chairman, AERB. The initial draft of REGDOC is prepared based on the SDDP by
officers of AERB or by Consultant, as required. The flow chart depicting this process is as given in Figure
6.1.
The initial draft is reviewed by AERB Task Force (AERB-TF) duly constituted for the purpose and
then by ACNRS. Revised draft is circulated among the domain experts, both within and outside DAE for
obtaining their review comments. The resulting draft is put up for approval by Chairman, AERB. In case of