Safety & Radioprotection

4 sub-tasks

Task 5: Safety & Radioprotection

schedule

4y (D) Conformity to legislation

3y (C) Decommissioning (B) Radioactivity control, safety & risks

2y

1. 2. 3. 4. 5. 6. 7. 8.

Participants: GANIL, France FZJ, Germany LMU, Germany CERN, EU CEA, France NIPNE, Romania FI, Lithuania Univ. Warsaw, Poland

role - sub-task D - sub-task C - sub-task B - sub-task A - coordination - contribution - contribution - contribution

External partners: ORNL, ANL, TRIUMF, JAERI, KAERI

(A) Radiation, activation, shielding & doses

12-13 October 2006, LMU, Germany; contact: [email protected]

1y

Safety & Radioprotection

2006: sub-task A (CERN)

• radiation characterization (primary beam, targets, beam dump, secondary beam lines) • activation estimates (primary and secondary beam lines, targets, beam dump, environment) • optimization of shielding against prompt radiation, dose rates

** Deliverable/

** Deliverable/Milestone Name

Milestone No

** Workpackage

** Lead

/Subtask No

Contractor(s)

** Planned in months

Expected in months

M1.1

Validation of MC codes

5/A

CERN, CEA, NIPNE, WU, FI

6

12

OK

M1.2

Radiation & activation estimates

5/A

CERN, CEA, NIPNE, WU, FI

12

36

?

M1.3

Shielding guidelines

5/A

CERN, CEA, NIPNE, WU, FI

22

22

OK

12-13 October 2006, LMU, Germany; contact: [email protected]

Safety & Radioprotection

Sub-task A; M1.1; validation of MC codes

1.

TN-06-01 "Validation of FLUKA calculated cross-sections for radioisotope production in proton-on-target collisions at proton energies around 1 GeV“, M. Felcini, A. Ferrari, CERN, Jan. 2006

2.

TN-06-02 "Monte-Carlo validation on accelerator shielding experiments“, A. Plukis, A. Zukauskaite, R. Plukiene, FI Vilnius , Jan. 2006

3.

TN-06-04 “Benchmark calculations on particle production within the EURISOL DS project ” , B. Rapp, J.C. David , V. Blideanu, D. Doré, D. Ridikas, N. Thiolliere, CEA Saclay, Mar. 2006

4.

TN-06-?? “Accelerator shielding benchmarks” , D. Ene et al. , NIPNE, Oct. 2006 (in preparation)

5.

TN-06-?? “Fluka simulation of NESSI experiments” , L. Pienkowski et al., WU, Oct. 2006 (in preparation)

OK Recommendations/improvements for both MCNPX and FLUKA

12-13 October 2006, LMU, Germany; contact: [email protected]

Sub-task A; M1.2; radiation and activation Safety & Radioprotection

1.

TN-06-03 “Nuclide inventories in Hg-targets“, R. Moorman et al., FZJ, August 2006

2.

TN-06-09 “Activation calculation of the EURISOL mercury target”, B. Rapp et al., CEA Saclay, August 2006

3.

TN-06-10 “The radiotoxic & conventional toxic relevance of Hg-target inventories”, R. Moormann et al., FZJ, August 2006

4.

TN-06-11 “Dose calculations for accidental releases from a mercury target”, R. Moormann, et al. FZJ, August 2006

5.

TN-06-12 “Thermo-chemical studies of the mercury/iodine system”, R. Moormann, et al. FZJ, August 2006

6.

TN-06-?? “Activation of steel, concrete, air and soil around the 4 MW target station”, B. Rapp et al., CEA, Oct. 2006 (in preparation)

12-13 October 2006, LMU, Germany; contact: [email protected]

Work is in progress by CERN, CEA, FZJ

Sub-task A; M1.2; radiation and activation Safety & Radioprotection Geometry 2006

p(1GeV; 4MW) Hg UCx

Total activity

3

H

148Gd

B. Rapp et al., CEA Importance of model validation-benchmarking! 12-13 October 2006, LMU, Germany; contact: [email protected]

Sub-task A; M1.2; radiation and activation Safety & Radioprotection

12-13 October 2006, LMU, Germany; contact: [email protected]

B. Rapp et al., CEA

Sub-task A; M1.3; shielding guidelines Safety & Radioprotection

Action

Leading institute & support

Planned

1. Proton driver

CERN (support CEA/FI)

Month 24

2. TIS & beam dump

CERN (support CEA/FI)

Month 24

3. Mass separator and post-accelerator

CEA (support CERN/NIPNE)

Month 24

4. Experimental halls

CEA (support CERN/NIPNE)

Month 24

Note: 4 MW and 100 kW targets are addressed.

Collaboration with all corresponding tasks is crucial! Is it feasible by 2007? Do we have sufficient information for “3” and “4” ? • beam ions/energy/intensity and expected losses • simplistic geometry/material configuration 12-13 October 2006, LMU, Germany; contact: [email protected]

Sub-task A; M1.3; shielding guidelines Safety & Radioprotection

12-13 October 2006, LMU, Germany; contact: [email protected]

Sub-task A; M1.3; shielding guidelines (driver) Safety & Radioprotection P. Berkvens, “Design of ESS”, RPSD2006, Carlsbad, USA. April 3-6, 2006

Shielding criteria: • Normal losses of 1W/m • Dose rates < 0.5 µSv/h Definition of earth shielding for a given concrete thickness 800 height earth berm [cm]

700 600 500 400 300 200

Cross check: MC versus deterministic

100 0 -1500

-1000

-500

260 cm

0

500

300 cm

300 cm

300 cm

60 cm

12-13 October 2006, LMU, Germany; contact: [email protected]

1000

position from beam axis [cm]

Shielding thickness

Monte Carlo

Moyer model

45 cm concrete + 4.75 m earth

2.5 µSv/h

3.8 µSv/h

Sub-task A; M1.3; shielding guidelines (MW target) Safety & Radioprotection M. Felcini et al., “Design of the Eurisol multi-MW target assembly: radiation and safety issues”, SATIF-8 workshop, South Korea, Pohang, 22-24 May 2006

R

RIB to ioniser/separator

Z

4 MW proton beam

Dose rates < 1 µSv/h

graphite

UCx targets

mercury

UCx targets

graphite

used target to hot cell

• •

1m

12-13 October 2006, LMU, Germany; contact: [email protected]

Concrete: for θ = 0, 90 &180o 900, 800 & 550 cm To be complemented with earth

Sub-task A; M1.3; shielding guidelines (post-accelerator) Safety & Radioprotection

• •

B. Rapp et al., CEA

Concrete: for θ = 90o 250 cm To be complemented with earth

12-13 October 2006, LMU, Germany; contact: [email protected]

Dose rates < 1 µSv/h for the total beam loss during 1 s

Safety & Radioprotection

2006: sub-task B (LMU)

• activity dispersion, contamination, migration • oxidation of target materials • containment of volatile radioactivity • target preparation, handling, confinements, ventilation • waste production • risk and failure scenarios

** Deliverable/

** Deliverable/Milestone Name

Milestone No

** Workpackage

** Lead

/Subtask No

Contractor(s)

** Planned in months

Expected in months

M2.1

Dispersion of radioactivity

5/B

LMU, NIPNE, CERN, FZJ, CEA

17

17 (ok)+3

M2.2

Test of purification system

5/B

LMU, CERN, NIPNE, FZJ, CEA

31

31

M2.3

Containment of radioactivity

5/B

LMU, CERN, NIPNE, FZJ, CEA

17

17 (ok)+3

M2.4

Activity transport in ground water

5/B

LMU, FZJ, CEA

17

17 (ok) + 3

12-13 October 2006, LMU, Germany; contact: [email protected]

FI,

Sub-task B; M2.1: dispersion of radioactivity

Safety & Radioprotection

TN-06-06 D.V. Vamanu, V.T. Acasandrei and B.I. Vamanu, "Dispersion of radio-elements, contamination, migration: experience gained from NPPs“, NIPNE, Jan. 2006 + 1st version of the software available on CD SOURCE:

Oak Ridge National Laboratories. The CONDOS code. U.S. Nuclear Regulatory Commission, International RTM-95 Response Technical Manual

Isotope / Mix

Shielding Lead Iron Aluminium Water Air Concrete

ECF DCF

Exposure / Dose to distance • Exposure • EDE • BDE

OK: in time (NIPNE) 12-13 October 2006, LMU, Germany; contact: [email protected]

Sub-task B; M2.3: Containment of radioactivity Safety & Radioprotection

Testbench facility at MLL (Garching):

P. Thirolf et al., LMU

lHe refrigerator:

- cryopanel prototype coupled to Helium refrigerator - first cooling tests with cryopanel successful

Planned next actions: - measurement of temperature distribution pumping capacity isotopic retainment factors localization capability in case of vacuum leak, condensate build-up during longterm operation performance in presence of hot fission source OK: in time (LMU) 12-13 October 2006, LMU, Germany; contact: [email protected]

Sub-task B; M2.4: activity transport in the ground water Safety & Radioprotection R. Moormann et al., FZJ

Activation of soil/ground water, migration of activity with ground water FZ Jülich contribution Main goal is the development of a code system for calculation of the groundwater contamination at the EURISOL fence (tap water quality is required there). By preliminary activation calculations the most relevant nuclides were identified:

CEA: Soil and ground water activation (source) will be done by December for typical soils at CERN, GANIL & FZJ!

OK: in time (FZJ) 12-13 October 2006, LMU, Germany; contact: [email protected]

Safety & Radioprotection

2006: sub-task D (GANIL)

• licensing and permission procedures (country dependence) • guidelines on technical options, implementations and execution conditions • potential risk and delay estimates

** Deliverable/

** Deliverable/Milestone Name

Milestone No M4

Conformity to legislation

** Workpackage

** Lead

/Subtask No

Contractor(s)

5/D

GANIL, CERN, CEA, FZJ

** Planned in months 45

Expected in months 24 (?)

Specific request by G. Fortuna: legal issues related to the use/production of 233U, 235U and 239Pu for Switzerland, Germany, France, & Italy 1.

TN-06-07 “Legal dispositions for transport, storage and use of special fissionable isotopes in Switzerland”, T. Otto, CERN, May 2006

2.

TN-06-08 “Licensing aspects for multi-MW spallation sources with an Hg-target; Comparison of different countries”, R. Moormann, et al. FZJ, August 2006

Little outcome from GANIL! 12-13 October 2006, LMU, Germany; contact: [email protected]

Safety & Radioprotection

2006: sub-task C (FZJ)

• storage and disposal of spent targets; • characterization of radioactive waste produced; • characterization of activated structures, their volumes, specific activity, radio-elements; • guidelines of the decommissioning and dismantling strategy

** Deliverable/

** Deliverable/Milestone Name

Milestone No M3

Decommissioning issues investigation

** Workpackage

** Lead

/Subtask No

Contractor(s)

5/C

FZJ, GANIL, CERN, CEA

** Planned in months 45

Expected in months 45

OK: work is advanced indirectly (FZJ, CEA, CERN, …)

12-13 October 2006, LMU, Germany; contact: [email protected]

Meetings held in 2006 Safety & Radioprotection Date

Title/subject of meeting

Location

Number of attendees

Website address

5-6.06.06

T5-04-WU-05-06.06.06

WU

10

http://eurisol.wp5.free.fr/

12-13.10.06

T5-05-LMU-12-13.10.06

LMU

15

http://eurisol.wp5.free.fr/

Meetings planned in 2007 May 2007, FI, T5 October 2007, FZJ, T5 + Saferib

External partners: ORNL and TRIUMF have already contributed KAERI and JAEA present today

Conference presentations/publications: 1.

D. Ridikas et al., “Safety and radioprotection issues within the EURISOL DS project”, RPSD2006, Carlsbad, USA, 3-6 April 2006

2.

M. Felcini et al., “Design of the Eurisol multi-MW target assembly: radiation and safety issues”, SATIF-8, Pohang, South Korea, 22-24 May 2006

3.

B. Rapp et al., “Benchmarking of the modeling tools within the EURISOL DS project”, SATIF-8, Pohang, South Korea, 22-24 May 2006

4.

D. Ridikas et al., “Measurements of delayed neutron yields & time spectra from 1 GeV protons interacting with thick natPb targets”, PHYSOR2006, Vancouver, Canada, 10-14 September 2006

5.

…

12-13 October 2006, LMU, Germany; contact: [email protected]

Safety & Radioprotection

Deviations from Annex 1

Request by B. Rannou (GANIL) (?): Advance of sub-task E “conformity to legislation” Planned in 4th year shift to 2nd year, i.e. 2006

Request by L. Pienkowski (WU) (?): 24 kEuros of “Task 5” and all manpower “Task 11“ Decision in the coming MB meeting on 16 October 2006

Request by D. Ridikas (CEA) (?): Delay in deliverable D1: “Radiation, activation and doses” Planned in 2006 expected 2007 12-13 October 2006, LMU, Germany; contact: [email protected]

Safety & Radioprotection

2006: sub-task D

The following handling/production/storage limits of fissile materials would require Nuclear Facility Authorizations/Licensing: • for construction, operation and decommissioning • constant supervision by the safety authorities • decree by the government • fall under the safeguard rules derived from the non-proliferation treaty • demonstration: if >10-4/year probability accident accidental exposure < 1 mSv; Examples: PSI in Switzerland, ILL Grenoble in France, … Fissile Material

Switzerland

Germany

France

Italy

Pu-239, g

15-150

15

375

-

U-233, g

15-150

15

375

-

U-235, g

15-150

15

600

-

Total fissile, g

15-150

15

375-600

-

Final note: Proton accelerator with • Ep > 300MeV and • Pbeam > 0.5kW subject to Nuclear Facility Authorizations in France 12-13 October 2006, LMU, Germany; contact: [email protected]