November 2013  Sellafield EHSC
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November 2013 Sellafield EHSC. Sellafield Food Monitoring 2012. Dr Alastair Dewar Cefas (Lowestoft). http://www.cefas.defra.gov.uk/. Cefas Environment & Ecosystems (Lowestoft and Whitehaven). November 2013 Sellafield EHSC. Food Standards Agency Consultation Announcement

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November 2013 Sellafield EHSC

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November 2013 sellafield ehsc

November 2013 Sellafield EHSC

Sellafield Food Monitoring 2012

Dr Alastair Dewar

Cefas (Lowestoft)

http://www.cefas.defra.gov.uk/

Cefas Environment & Ecosystems (Lowestoft and Whitehaven)


November 2013 sellafield ehsc

November 2013 Sellafield EHSC

  • Food Standards Agency

  • Consultation Announcement

  • The FSA has completed a consultation on their programme of monitoring for radioactivity in food. The FSA’s chosen option is for an optimised programme which is risk based and in line with current international best practice and guidance. This will enable the FSA to continue to meet the UK’s legal and international obligations relating to radioactivity in food and protect the safety of the food-chain.

  • For further information, please contact:

  • Chris Thomas

  • Tel: 020 7276 8728

  • Email: [email protected]


November 2013 sellafield ehsc

November 2013 Sellafield EHSC

  • Updates in RIFE 18

  • More detail on ‘representative person’ in Summary and Section 1

  • e.g. Summary , Page 10

  • New Sellafield and Springfields trend data - Fig. 2.17 & 2.4


November 2013 sellafield ehsc

November 2013 Sellafield EHSC

  • Sellafield Habits Surveys

  • Latest 1 Year Review (Aquatic - FSA/EA/ONR - 14- 24 August 2012 (other updated habits information, Sellafield, LLWR, Springfields, Barrow, Dumfries and Galloway, Hunterston)

  • 2012 Shellfish consumption and intertidal occupancy review


November 2013 sellafield ehsc

November 2013 Sellafield EHSC

Sellafield Habits Surveys 2003 - 2012

Consumption rates (kg y-1),

Adult (high-rate groups), 2003 – 212


November 2013 sellafield ehsc

November 2013 Sellafield EHSC

Sellafield Total Doses 2012

Total Dose (all major sources) 0.30 mSv (0.18 mSv in 2011)

Most exposed age group: adults - mollusc consumers (adult marine plants /algae at high rates in 2011)

Contributors: 0.082 mSvseafood/external (nuclear industry discharges) (0.068 mSv, 2011)

(revision in the amount of mollusc consumption of most exposed people)

0.22 mSvseafood (historic Whitehaven discharges) (0.11 mSv in 2011)

(increase in Po-210 in locally caught crustaceans & consumption rates)

Total Dose (gaseous/direct) 0.010 mSv (0.010 mSv in 2011)

Most exposed age group; infants (1y) - root vegetables at high-rates

Total Dose (liquid)0.30 mSv (0.18 mSv in 2011)

Most exposed age group; adults - molluscan shellfish at high-rates

Highest total doses were Sellafield & Amersham,

with doses of 0.30 and 0.22 mSv, respectively.


November 2013 sellafield ehsc

November 2013 Sellafield EHSC

Sellafield - Contributions to total doses 2003 – 2012

All sources

2011

Most important

pathway

fish 55 %

crustaceans 24 % sediments 12 % molluscs 9 %

Most important

radionuclides :

Po-210 60 %

Am-241 9 %

Pu-239/240 4 %

2012

Most important

pathway

crustaceans 63% fish 19 %

molluscs 13 %

sediments 5%

Most important

radionuclides :

Po-210 69%

Am-241 9%

Pb-210 6%

Pu-239/240 4%


November 2013 sellafield ehsc

November 2013 Sellafield EHSC

Sellafield - Contributions to total doses 2003 – 2012

Gaseous and direct radiation sources

2011 - Contributors:

Consumption :

milk 82%

Potatoes 10 %

Most important

radionuclides :

Sr-90 33%

Co-60 17%

Cs-137 11 %

Ru-106 11 %

2012 - Contributors:

Consumption :

domestic fruit 30%

root vegetables 28%

potatoes 27%

other domestic vegetables 11%

Most important

radionuclides :

Ru-106 64%

Sr-90 19%


November 2013 sellafield ehsc

November 2013 Sellafield EHSC

Sellafield Terrestrial Monitoring 2012

Milk collected from ~ 17 local farms on a weekly basis and bulked into weekly, monthly or quarterly samples & Non-milk (animals and crops)

Gaseous discharges in 2012 were generally similar to 2011 (decrease in Sb-125, Kr-85 and I-129)

Low concentrations and similar to previous years

Time trends:

C-14 relatively constant ;

Cs-137 and Sr-90 decreasing;

Actinides much lower than sea-foods

Gaseous Discharges, Radionuclides in milk,

2003 - 2012


November 2013 sellafield ehsc

November 2013 Sellafield EHSC

Sellafield Marine Monitoring 2012

~ 300 samples covering seasons, commercial and ‘wild food’ species - determination of broad range of nuclides

Liquid discharges; generally similar to 2011 (tritium, C-14, Cs-137, Am-241, Cm & I-129 slightly lower in 2012)

Concentrations generally similar to those in 2011

Plutonium radionuclides and Am-241 generally similar in shellfish


November 2013 sellafield ehsc

November 2013 Sellafield EHSC

Time Trends (2003 – 2012)

Carbon-14 in fish/shellfish


November 2013 sellafield ehsc

November 2013 Sellafield EHSC

Time Trends (2003 – 2012)

Cobalt-60 in fish/shellfish


November 2013 sellafield ehsc

November 2013 Sellafield EHSC

Time Trends (2003 – 2012)

Technetium-99 in fish/shellfish


November 2013 sellafield ehsc

November 2013 Sellafield EHSC

Time Trends (2003 – 2012)

Caesium-137 in fish/shellfish


November 2013 sellafield ehsc

November 2013 Sellafield EHSC

Time Trends (2002 – 2011)

Plutonium-239+240 in fish/shellfish


November 2013 sellafield ehsc

November 2013 Sellafield EHSC

Time Trends (2003 – 2012)

Americium-241 in fish/shellfish


November 2013 sellafield ehsc

November 2013 Sellafield EHSC

Food Standards Agency

Internet site

  • For further information including:

  • RIFE Report 2012 (plus CD supplement)

  • Food Standards Agency’s provisional monitoring results for 2013

www.food.gov.uk/science/surveillance/radiosurv/rife//

If you would like to express any views please email:

[email protected]


November 2013 sellafield ehsc

November 2013 Sellafield EHSC

Thanks for the invitation,

And your attention

For further information for Cefas reports http://www.cefas.defra.gov.uk/publications-and-data.aspx


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