The HAW project

European Commission Directorate-General For The Information Society And Media Directorate-General For Research And Innovation

Description

Test disposal of high-level waste in the Asse salt mine: International test-plan for irradiation experiments
Nuclear energy and safety
Energy research

Informations

• Publié par: EUROPEAN-COMMISSION-DIRECTORATE-GENERAL-FOR-THE-INFORMATION-SOCIETY-AND-MEDIA-DI
• Nombre de lectures: 0
• EAN13: 928261686
• Langue: English
• Poids de l'ouvrage: 2 Mo

Extrait

Commission of the European Communities
The HAW project
Test disposal of high-level waste
in the Asse salt mine
International test-plan
for irradiation experiments Commission of the European Communities
nuclear science
and technology
The HAW project
Test disposal of high-level waste
in the Asse salt mine
International test-plan
for irradiation experiments
J. Mönig et al.
GSF/ltF
Theodor Heussstraße 4
D-3300 Braunschweig
Joint report
established by:
GSF— Braunschweig (Coordinator)
EC N — Petten
Andra— Fontenay-aux-Roses
Enresa — Madrid
This work has been performed under Contract No FI-1 W-0003-D(B)
in the framework of the Commission of the European Communities R&D programme
on management and storage of radioactive waste
Directorate-General
Science, Research and Development
1990 EUR 12946 EN Published by the
COMMISSION OF THE EUROPEAN COMMUNITIES
Directorate-Genera I
Telecommunications, Information Industries and Innovation
L-2920 Luxembourg
LEGAL NOTICE
Neither the Commission of the European Communities nor any person acting on
behalf of then is responsible for the use which might be made of the
following information
Cataloguing data can be found at the end of this publication
Luxembourg: Office for Official Publications of the European Communities, 1990
ISBN 92-826-1686-X Catalogue number: CD-NA-12946-EN-C
© ECSC-EEC-EAEC, Brussels · Luxembourg, 1990
Printed in Belgium International Testplan for Irradiation Experiments
within the HAW Test Disposal on the Asse Salt Mine
This report was compiled by
GSF-Institut für Tieflagerung J. Mönig GSF-Ins
with contributions from
A. Gareia-CeIma ECN
R.B- Helmholdt ECN
H. Hinsch GSF-IfT
F. Huertas ENRESA
GSF-IfT J. Mönig
J.M. Palut ANDRA
— m — CONTENTS
Page
1. INTRODUCTION
1.1. The HAW test 1
1.2. Irradiation effects in Rock Salt 3
1.3. Present knowledge 5
1.4. Purpose of the document 7
1.5. Layout of thet 8
2. LABORATORY IRRADIATIONS 9
2.1. Objectives
2.2. Irradiations carried out by CEA/ANDRA 10
2.3.sd out by ECN and ENRESA3
2.3.1. The experiments in the gamma irradiation
facility 1
2.3.1.1. The facility GIF A4
2.3.1.2.ey GIF Β6
2.3.2. The small angle neutron scattering (SANS)
experiments7
2.4. Irradiations carried out by GSF/IfT 18
3. IN SITU IRRADIATIONS INSIDE THE DUMMY CANISTER9
3.1. Technical information
3.1.1. Stacking of the 30 radioactive canisters 1
3.1.2. Time table for dummy canister emplacement 21
3.1.3. Designation of the irradiated samples4
3.2. Irradiation program from ECN and ENRESA 26
3.3. In situ irradiation program from GSF 33
4. DOSE MEASUREMENTS 35
4.1. Dose measurements by CEA/ANDRA
4.1.1. Ionization chamber dosimetry6
4.1.1.1. Dose measurements in the transfer
station8
4.1.1.2. Doses in the test field 39
4.1.2. Solid state dosimetry 41
4.1.2.1. Dose measurements in the dummy
canister2
4.1.2.2. Doses in the transfer
station5
4.1.2.3. Dose measurements in the guide tube 47
4.1.2.4.es in borehole DL001
4.2. Dose measurements by GSF9
— ν 4.2.1. Ionization chamber dosimetry 49
4.2.1.1. Dose measurements in the transfer
station 50
4.2.1.2. Doses in the guide tubes 51
4.2.1.3.es in the boreholes
DL 001 and DL 0021
4.2.2. Solid state dosimetry2
4.2.2.1. Dose measurements in the dummy
canisters3
4.2.2.2. Doses in the guide tubes 54
4.2.2.3. Doses in the borehole
DL 0014
5. DOSE CALCULATIONS 55
5.1. Present knowledge
5.2. Calculations carried out by CEA/ANDRA 5
5.2.1. Planned calculations7
5.2.2. Comparison between calculations and measurements 59
5.3.s carried out by ECN 60
6. MODELLING 63
6.1. Proposed work
6.1.1. Models for the amount of stored energy 64
6.1.2.s for the release ofdy
6.1.3. Consequences of a possible release5
6.1.4. Models for the gas release 66
7. SUMMARY 68
8. REFERENCES 74
— VI LIST OF TABLES
Page
1 - Potential consequence of y-radiation-induced effects
in rock salt 4
2 - Overview of parameters which may influence the results
of rock salt irradiation 9
3 - General information regarding the laboratory irradiations
by CEA/ANDRA 10
4 - Data on the samples used for the laboratorys
by CEA/ANDRA1
5 - Data on the experimental procedure used by CEA/ANDRA 1
6 - Parameter matrix for irradiation experiments carried out
by CEA/ANDRA in SACLAY2
7 - Overview of the laboratory irradiations performed by GSF 18
8 - Time schedule for dummy canister emplacement 23
9 - Calculated dose rates and temperatures at the various levels
inside the dummy canister 27
10 - Sample data for the dummy canister irradiations carried out
by ECN and ENRESA9
11 - Sample data for the irradiation experiments carried out
by GSF in the dummy canister 33
12 - Principle locations and objectives for dose measurements
in the HAW test field5
13 - General data for the ionization chamber dosimetry
measurements carried out by CEA/ANDRA7
14 - Ionization chamber dosimetry by CEA/ANDRA in the transfer
station 38
15 - Ionization chamber dosimetry by CEA/ANDRA in the guide tubes 39
16 -n chambery byA in the boreholes
DL 001 and DL 002 40
— VII — 17 - General data on solid state dosimetry carried out by
CEA/ANDRA 41
18 - Solid state dosimetry by CEA/ANDRA in the dummy canister 42
19 - Solid statey byA in the transfer station5
20 - Solid state dosimetry by CEA/ANDRA in a guide tube 47
21 - Solid statey byA in borehole DL 0018
22 - General data for the ionization chamber dosimetry by GSF/IfT 49
23 - Ionization chamber dosimetry by GSF in the transfer station 50
24 -n chambery by GSF in the guide tubes 51
25 - Ionization chamber dosimetry by GSF in boreholes DL 001 and
DL 002 51
26 - General data on the solid state dosimetry measurements
performed by GSF/ISS2
27 - Solid state dosimetry by GSF in the dummy canisters 53
28 - Solid statey by GSF in the guide tubes4
29 - Solid state dosimetry by GSF/ISS in the borehole DL 001 5
30 - General description for the calculations carried out
by CEA/ANDRA 57
31 - Calculation of the gamma spectrum and the dose in the
dummy canister
32 -n of the dose inside the guide tube and the
boreholes DL 001 and DL 0028
33 - Calculated dose rate in Gy/h at several distances from
the borehole A and from borehole B, respectively 61
34 - Calculated temperature in °C at the various boreholes2
35 - Summary of y-radiation-induced effects in rock salt
investigated during the HAW program 69
36 - Locations and types of dose measurements during the
HAW test 71
37 - Time schedule for the various dosimetry measurements
after the loading of one borehole with radioactive canisters 72
VIII