here - Atomic Energy Regulatory Board

40 

CHAPTER 4 

ENVIRONMENTAL SAFETY AND OCCUPATIONAL HEALTH AND SAFETY 

4.1 ENVIRONMENTAL SAFETY 

The Environmental Survey Laboratories (ESL) of 

the Health, Safety and Environment Group, BARC carry 

out environmental surveillance at all the operating nuclear 

power plants at sites. The liquid and gaseous waste 

discharged to the environment during the year 2005 from 

the operating Units was only a small fraction of the prescribed 

Technical Specification limits. Figs. 4.1a - 4.1e show the 

liquid and gaseous discharges from the plants for the years 

% of Station Technical Specification Limit 

100 

80 

60 

40 

20 

2001,2002,2003,2004 and 2005 as % of permissible limits 

as per Technical Specifications. Figs. 4.2a and 4.2b show 

the committed dose to the members of the public due to the 

release of radioactive effluents from the plants. Radiation 

dose to members of the public near the operating plants is 

estimated based on measurements of radionuclide 

concentration in items of diet, i.e., vegetables, cereals, milk, 

meat, fish, etc and through intake of air and water. It is 

seen that in all the sites the effective dose to public is far less 

than the AERB yearly dose limit of 1 mSv. 

Figure 4.1a : Liquid Waste Discharges From NPPs (Tritium) 

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RAPS 1&2 MAPS NAPS KAPS KGS RAPS 3&4 

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Note: 

1) TAPS is a Boiling Water Reactor. Hence, there is no generation/dishcharge of Tritium. 

2) The data of MAPS pertains to transfer of liquid waste to Centralised Waste Management Facility, Kalpakkam 

for processing & discharge to the environment. 

3) During 2003 RAPS-1 was shut down throughout the year. 

4) During 2002, MAPS-2 remained shut down throughout the year and during 2003 it remained shut down for 

the first six months owing to EMCCR activities. 

5) During 2003, MAPS-1 remained shutdown for 4½ months. During 2005, MAPS-1 remained shutdown 

for enhance Coolant Tube Replacement. 

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