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Radioactive discharges monitoring of the Environment and Occupational safety: Highlights for 1986 (1987)

AuteurBNFL
Datum1987
Classificatie 2.05.0.00/05 (GROOT-BRITTANNIË - ALGEMEEN)
Voorkant

Uit de publicatie:

RADIOACTIVE DISCHARGES AND MONITORING OF THE ENVIRONMENT

Radioactive Discharges
Most industrial chemical plants discharge waste effluents to the environment.
Each of British Nuclear Fuels' industrial sites is authorised to discharge radioactive 
wastes by the Authorising Departments, namely the Department of the Environment 
and Ministry of Agriculture, Fisheries and Food in England and by the Scottish
Development Department in Scotland. The certificates of Authorisation impose 
limitations and conditions on the disposal of wastes such as the quantities of 
radioactivity permitted to be discharged, the samples to be taken and analysed and 
the records to be kept.
In establishing radioactive discharge limits for BNFL’s operations, the Authorising 
Departments take account of the recommendations of the International Commission 
on Radiological Protection (ICRP), as expanded and interpreted by the UK National
Radiological Protection Board (NRPB), and the advice of the Radioactive Waste 
Management Mvisory Committee (RWMAC).
In 1986 no radioactivity limits for the discharge or disposal of waste effluent from, 
or at, any of BNFL’s sites were exceeded. There were further substantial reductions 
in discharges from the Sellafield site.

Monitoring of the Environment
The Company carries out extensive monitoring of the environment inside and outside 
BNFL sites. Over10,000 samples are taken and analysed every year in order to assess 
the radiation doses to members of the public. These samples include air, water, soil, 
sand, seaweed, fish, shellfish, milk and vegetation.
Some members of the general public are identified by the Authorising Departments 
as being subject to the highest radiation doses from BNFL discharges. Such a group 
of people is known as a 'critical group'. Special attention is paid to the environment 
of critical groups and their consumption of foodstuffs so that their exposure to 
radiation is closely monitored.
As a consequence of the reductions in discharges there were further reductions in 
the dose to the critical group eating seafoods in West Cumbria. It is emphasised that 
members of the public generally, in the vicinity of BNFL sites, receive radiation 
doses which are much less than those identified for the critical groups.

The Effects of Chernobyl
As soon as radioactivity from the Chernobyl accident reached the UK, the BNFL sites 
Implemented special monitoring programmes as a contribution to the UK programme. 
The contribution from Chernobyl to the doses to the BNFL sites' critical groups was 
marginal except at Sellafield where, due to very high rainfall in West Cumbria, the 
levels of radioactivity deposited from Chernobyl were amongst the highest in the UK.
For one critical group Chernobyl contributed a greater dose than did Sellafield's 
discharges.

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