ML042540084

2-2 Emergency Preparedness & Exclusion Zone Requirements for Indian NPPs - Bajaj

ML042540084
Person / Time
Site:	Indian Point
Issue date:	09/03/2004
From:	Bajaj S NRC/OCM
To:
C. E. (Gene) Carpenter, IRDP/OCM
Shared Package
ML042530639	List: ML042540084
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Download: ML042540084 (25)

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EMERGENCY PREPAREDNESS AND EXCLUSION ZONE REQUIREMENTS FOR INDIAN NPPs S.S.BAJAJ AERB-USNRC DISCUSSION MEET, WASHINGTON, SEPTEMBER 2004

PROTECTION OF PUBLIC IN EVENT OF MAJOR ACCIDENTS IN NPPs, PROVIDED THROUGH:

• ZONING AROUND NPPs

• PREPAREDNESS FOR EMERGENCY COUNTERMEASURES IN PUBLIC DOMAIN

ZONES:

• EXCLUSION ZONE : 1.5KM/1.6 KM

• `STERILIZED ZONE : 5 KM (CONTROLLED POPULATION ZONE)

• EMERGENCY PLANNING ZONE : 16KM

ü PRIMARY  : 8KM (16 SECTORS)

ü SECONDARY : 16 KM

• ENVIRONMENTAL SURVEY ZONE : 30 KM

REQUIRMENTS FOR EMERGENCY PREPAREDNESS AERB GUIDE AERB/SG/EP-1, EP-2

• PLANS TO BE IN PLACE BEFORE NPP OPERATION IS LICENSED.

• CATEGORIES OF EMERGENCIES:

ü EMERGENCY ALERT

ü PLANT EMERGENCY : TYPE A,B

ü SITE EMERGENCY

ü OFF-SITE EMERGENCY -PLAN 1, PLAN 2, PLAN 3

• OFFSITE EMERGENCY HANDLED BY STATE AUTHORITIES WITH TECHNICAL INPUT FROM OPERATING ORGANISATION

OBJECTIVES OF EMERGENCY INTERVENTION FORM, SCALE AND DURATION OF INTERVENTION SHOULD BE OPTIMISED:

• AVOID SERIOUS NON-STOCHASTIC EFFECTS (DOSE<THRESHOLD)

• LIMIT STOCHASTIC RISKS (NET POSITIVE BENEFIT TO INDIVIDUAL)

• LIMIT OVERALL INCIDENCE OF STOCHASTIC EFFECTS (COLLECTIVE DOSE -ALARA)

INTERVENTION LEVELS (IL) FOR COUNTERMEASURES DEFINED FOR THREE SPACE-TIME DOMAINS:

(DOMAINS OF DECREASING ORDER OF RADIOLOGICAL SEVERITY)

DIST NEAR FIELD INT. FIELD FAR FIELD TIME (A1) (A3) (A3)

EARLY PHASE D1 (B1)

INT. PHASE D2 (B2)

LATE PHASE D3 (B3)

DOMAIN 1 DOMAIN 2 DOMAIN 3

INTERVENTION LEVELS DOMAIN MAJOR OBJECTIVE OF COUNTER- IL mSv PATHWAY COUNTER MEASURE MEASURES WB THYROID 1 INHALATION AVOID SERIOUS IODINE PROPH. 500/2500 NON-STOCHASTIC SHELTER 20/100 EXT.GAMMA EFFECT TO EVACUATE 100/500 INDIVIDUAL 2 INGESTION LIMIT IODINE PROPH. 50/500 STOCHASTIC RISK SHELTER 5/20 TO INDIVIDUAL CONTROL 5/20 FOOD 3 INGESTION MINIMISE CONTROL 1/5 OVERALL FOOD INCIDENCE OF STOCHASTIC EFFECTS

USE OF INTERVENTION LEVELS

• IF ASSESSED RELEASE AND MEASUREMENTS CONFIRM THAT LOWER IL IN A DOMAIN IS NOT LIKELY TO BE EXCEEDED, THE RELEVANT COUNTERMEASURE MAY NOT BE INITIATED.

• IF LOWER IL IS LIKELY TO BE EXCEEDED, INITIATE &

COMPLETE THE COUNTERMEASURE SUCH THAT UPPER IL IS NOT EXCEEDED.

(DILS HELP DECIDE DOMAIN & COUNTER MEASURES)

• EXTERNAL GAMMA DOSE RATE AT 1m ABOVE GROUND

• ACTIVITY CONCENTRATION IN FOODSTUFF & WATER MAIN COUNTER- DIL PERIOD OF COMPLETION MEASIRE DOSE RATE PERSISTENCE PERIOD 1m ABOVE GR (HRS) (HRS)

(mSv/hr) 1 ADM.STABLE IODINE > 0.1 -

SHELTER 0.1 - 2 4 12 EVACUATE 1-3 10 24 2 ADM.STABLE IODINE >0.01 -

SHELTER 0.01 - 0.1 10 24 CONTROL OF ACT.CONC IN >24 HRS FOODSTUFF FOODSTUFF 3 CONTROL OF ACT. CONC. IN >24 HRS FOODSTUFF FOODSTUFF

COUNTERMEASURES TO BE IMPLEMENTED AT DIFFERENT GROUND GAMMA DOSE RATE IN THE OFF SITE AREAS

` DOMAIN-1 DOMAIN-2 - STABLE IODINE ADMINISTRATION (at the earliest )

DOMAIN-3 -STABLE IODINE ADMN -SHELTERING -EVACUATION (at the earliest ) ( within 12 hrs.) ( within 24 hrs.)

-FOOD CONTROL -SHELTERING (based on integrated (within 24 hrs.)

WB dose)

-FOOD CONTROL ( if integrated (based on integrated dose) dose exceeds 100 mSv) 0.01 0.1 1 (mSv/h)

ROUND (mSv/h) (mSv/h) & above MMA DOSE E (1 meter m ground )

OFFSITE RESPONSE EMERGENCY PLANT CONDITION PROJECTED INITIAL OFF-TYPE EXAMPLES DOSES/ SITE (NOTIFICATION INTERVENTION RESPONSE BY BY PLANT LEVELS PUBLIC AUTHORITIES) AUTHORITIES EMERGENCY MALFUNCTION IN -

ALERT PROCESS SYSTEM, HIGH ACTIVITY IN PHTS

• EXTERNAL EVENTS, FORECAST OF CYCLONE, EARTHQUAKE PLANT A SUBSTANTIAL EMERGENCY MALFUNCTION OF PROCESS SYSTEM B (SAFETY SYSTEMS &

CONTAINEMENT ALERT SYSTEM INTACT)

CONTD.

OFFSITE RESPONSE (CONTD.)

EMERGENCY PLANT CONDITION PROJECTED INITIAL OFF-TYPE EXAMPLES DOSES/ SITE (NOTIFICATION INTERVENTION RESPONSE BY BY PLANT LEVELS PUBLIC AUTHORITIES AUTHORITIES SITE EMERGENCY SUBSTANTIAL EMERGENCY MALFUNCTION OF ORGANISATION PROCESS & SAFETY ON STANDBY SYSTEM (CONTAINMENT SYSTEM INTACT)

OFF-SITE SUBSTANTIAL AS PER IL EMERGENCY EMERGENCY MALFUNCTION OF GUIDELINES ORGANISATION

• SHELTERING PROCESS SYSTEM, ACTIVATED TO

• SHELTERING & SAFETY SYSTEM & IMPLEMENT THYROID CONTT SYSTEM PROTECTIVE BLOCKING MEASURES

• EVACUATION

OFFSITE EMERGENCY PREPAREDNESS RESPONSITIBILITIES OF PUBLIC AUTHORITIES

• ASSISTING PLANT AUTHORITIES FOR ENVIRONMENTAL MONITORINGS/ASSAYS OF FOOD SAMPLES

• NOTIFYING/ADVISING AFFECTED POPULATION REGARDING REQUIRED ACTIONS

• SHELTERING

• DISTRIBUTION OF STABLE IODINE

• EVACUATION - ARRANGING TRANSPORT, SUPPLIES OF FOOD &

ESSENTIALS

• REHABILITATION

• ENFORCING ACCESS CONTROL TO AFFECTED AREAS

• IMPOUNDING OF CONTAMINATED FOOD STUFF

• ENFORCING LAW & ORDER/SECURITY/TRAFFIC CONTROL MEDICAL CARE

• LIVESTOCK MANAGEMENT

• COMMUNICATIONS

• PUBLIC INFORMATION.

SECRETARY, MINISTRY OF ENVIROMENT AND FORESTS

EMERGENCY PREPAREDNESS PLAN

• DEFINES:

ü EMERGENCY TYPES, PROTECTIVE ACTIONS, INTERVENTION LEVELS

ü EMERGENCY ZONES AND SECTORS

ü OFFSITE EMERGENCY ORGANISATION & RESPONSIBILITIES TO ESTABLISH, MAINTAIN AND IMPLEMENT EMERGENCY PLAN

ü ACTION PLANS FOR INDIVIDUAL FUNCTIONARIES

ü FACILITIES & EQUIPMENT REQD FOR HANDLING THE EMERGENCIES

• DOES NOT COVER EMERGENCIES SUCH AS CYCLONE, FLOOD, SABOTAGE RESULTING RADIATION EMERGENCY IS IN SCOPE OF THIS PLAN

• PLAN COVERS AREA UPTO 16KM RADIUS; (IF NECESSARY EMERGENCY ACTIONS COULD BE EXTENDED BEYOND 16 KM)

PLAN DOCUMENT

• DEMOGRAPHIC DATA

ü SECTOR/DISTANCE-WISE LISTING OF VILLAGES, POPULATION (HUMAN AND CATTLE), TYPES OF HOUSES, MILK COLLECTION CENTRES

ü SECTOR/DISTANCE-WISE POPULATION CENTRES AND SHELTERING FACILITIES (SCHOOLS, REST HOUSES, HOSPITALS, COMMUNITY HEALTH CENTRES ETC.)

• METEOROLOGICAL DATA (HISTORICAL)

ü SECTOR-WISE WIND SPEED, DIRECTION, SECTORS LIKELY TO BE AFFECTED, WIND ROSES

• FOOD INTAKE PATTERNS

• ROADS/ROUTES FOR EVACUATION; & TRAFFIC DIVERSIONS

• MEDICAL FACILITIES - SECTORWISE LISTINGS

• KEY PERSONNEL - LIST & CONTACT DETAILS

• LIVESTOCK POPULATION DATA

• VEHICLES AVAILABLE - PUBLIC/PRIVATE (SECTOR-WISE)

• REQUIREMENT OF POLICE DEPLOYMENT

RESOURCES & FACILITIES

• MANPOWER FOR MANAGEMENT, HEALTH PHYSICS SURVEYS, DECONTAMINATION, FIREFIGHTING, FIRST AID, DRIVERS, TECH STAFF FOR RESCUE/RELIEF, MEDICAL, COMMUNICATIONS

• SIREN, EMERGENCY SURVEY VEHICLES

• EMERGENCY EQUIPMENT:

RADIATION/ACTIVITY MONITORS PROTECTIVE EQPT, EMERGENCY LIGHTS

• COMMUNICATION FACILITIES

• MEDICAL FACILITIES, INCL. HOSPITAL, AMBULANCE, HANDLING OF CONTAMINATED PERSONNEL

• ENVIRONMENTAL MONITORING & SAMPLING NETWORK &

DATA PROCESSING SYSTEM

• EMERGENCY SHELTERS

• EMERGENCY CONTROL CENTRE

MAINTENANCE OF EMERGENCY PREPAREDNESS

• EMERGENCY EXERCISES:

PLANT EMERGENCY : ONCE IN A QUARTER SITE EMERGENCY  : ONCE IN A YEAR OFFSITE EMERGENCY : ONCE IN TWO YEARS

• EMERGENCY EQPT : PERIODIC CHECKS

• TRAINING : SITE/OFFSITE PERSONNEL, TARGET PUBLIC

• REVISE/UPDATE DOCUMENT EVERY 5 YRS

REQUIREMENTS RE EXCLUSION ZONE

• MINIMUM 1.5 KM RADIUS

• CALCULATED DOSES FOR LIMITING DBAs SHALL NOT EXCEED `REFERENCE DOSE LEVELS

ü 100 mSv WHOLE BODY

ü 500 mSv THYROID

Ø LIMITING DBSs : INITIATING EVENT SIMULTANEOUS WITH IMPAIRMENT OF A MITIGATING SAFETY SYSTEM VIZ : LOCA + FAILURE OF ECCS LOCA + FAILURE OF CONTAINMENT ISOLATION

Ø ASSUMPTIONS RE DOSE CALCULATION

ü EXPOSURE PERIOD : INDEFINITE

ü EXPOSURE PATHWAY : EXTERNAL + INHALATION (INGESTION EXCLUDED)

ü WORST METEOROLOGICAL CONDITIONS FOR FIRST TWO HRS, FOLLOWED BY AVERAGE METEOROLOGICAL CONDITIONS

PROPOSED REVISIONS IN EXCLUSION ZONE REQUIREMENTS

• REF. DOSE LEVELS:

- SAME AS BEFORE: 100mSv WB; 500mSv Thyroid

• HOWEVER INGESTION DOSES FOR FIRST FEW HOURS TO BE CONSIDERED (MILK ROUTE)

CONSEQUENTLY THYROID DOSE OF 500mSv APPORTIONED AS INGESTION  : 300 mSv EXT + INHALATION : 200 mSv MINIMUM RADIUS : 1.0 KM

THANK YOU