1. Buffer Zones - Status Report
EDMS
Buffer Zones - Status Report
G. Dumont on behalf of HSE/RP
30-Sep-16
LS2 committee

2. Traceability policy for radioactive equipment at CERN
Recording of the radiological hazards and measurements
Identification and recording of radioactive equipment
Individual radiological controls (EDMS ) of equipment leaving Radiation Areas with activation or contamination risks
Legal requirements: Loi sur la radioprotection (LRaP) Art.36 Ordonnance sur la radioprotection (ORaP) Art. 84 4. 3. 2. 1.
30-Sep-16
LS2 committee

3. Traceability tools for radioactive equipment at CERN
« Buffer Zone »
Computer
TREC
30-Sep-16
LS2 committee

4. « Buffer Zones » : scope CERN’s Radiation Areas divided in perimeters;
At least one Buffer Zone per perimeter;
Buffer Zones located near to the exit point(s) of equipement
Objectives:
Facilitate the respect of the rules: dedicated space for simple and autonomous traceability;
Rise efficiency: decoupled processes in simple steps:
Provide a dedicated space for RP measurement with low background;
Dedicated for temporary storage (48h) and small equipment only (typical surface 10-12m²).
Deposit equipment
RP measurement
Fetch equipment
30-Sep-16
LS2 committee

5. Specific cases Highly radioactive equipement Heavy equipment
Equipment of large volume
Large quantities of equipment
>> Buffer Zone shall not be used except for the traceability (computer).
Additional temporary zones are put in place
RP defines the requirements on the case by case wrt the contraints (space, radiological hazards, planning, transport means, etc.)
Question treated in the project phase or work preparation
30-Sep-16
LS2 committee

6. EYETS-16-17 examples Decabling projects (PSB, SPS):
Large quantities of waste expected
SPS: Subarea will be delimited and classified as Supervised Radiation Area in BB5
PSB: 361/2-004, already classified as Supervised Radiation Area will be used as a temporary zone
Example of temporary zone
Shaft
Buffer Zone
Temporary zone
30-Sep-16
LS2 committee

7. EYETS examples
Vacuum chamber exchange of the MU42 (PS) or TIDVG possible removal (SPS):
Heavy, big and highly radioactive equipment
Immediate removal to the storage / workshop under permanent RP supervision
If needed subarea delimited in the machine to keep it in a safe/secured place
30-Sep-16
LS2 committee

8. Present status (PS complex)
18 Buffer Zones
Buffer Zone BZ with modification needed BZ under construction Computer only
30-Sep-16
LS2 committee

9. Present status (SPS complex)
10 Buffer Zones
Buffer Zone BZ with modification needed BZ under construction Computer only
30-Sep-16
LS2 committee

10. Present status (LHC complex)
13 Buffer Zones
Buffer Zone BZ with modification needed BZ under construction Computer only
30-Sep-16
LS2 committee

11. Present status (summary)
Most of the Radiation Areas perimeters already equipped with suitable Buffer Zones;
Already 43 Buffer Zones:
38 existing Buffer Zones (BZ);
2 BZ under construction (BA80, ISOLDE);
3 BZ which need to be modified (see slides 15-16);
4 new TREC computers needed (slides 12);
In total 4 new Buffer Zones needed before LS2:
2 BZ + computer (slide 13-14);
2 BZ only, already existing computers (slides 14);
2 BZ needed for PS/SPS experimental areas during physics (slides 18).
30-Sep-16
LS2 committee

12. Need before LS2: storages
SMB storage buildings: 3 x computers needed (B.954, 955, TT4)
TE storage areas in B.150: 1 x computer needed
30-Sep-16
LS2 committee

13. Need before LS2: AWAKE
No Buffer Zone: one new barracks or extensions needed
30-Sep-16
LS2 committee

14. Need before LS2: SPS North Area
3 x barracks or extensions needed
B.911 (existing computer)
B.912 (existing computer)
B.888
30-Sep-16
LS2 committee

15. Need before LS2: Lin2-3/LEIR
Buffer Zone needs to be enlarged
30-Sep-16
LS2 committee

16. Buffer Zone needs to be enlarged or moved
Need before LS2: SD5
Current Buffer Zone
Buffer Zone needs to be enlarged or moved
Possible extension
30-Sep-16
LS2 committee

17. Other needs: PS/SPS experimental areas
Buffer Zones in PS/SPS experimental areas are mainly used during physics (not critical for LS2)
EHN1 and East Areas already (partially) equipped.
Following needs:
EHN1: +1 Buffer Zone on Saleve side
AD hall: +1 Buffer Zone B.393 side
30-Sep-16
LS2 committee

18. Traceability for (E)YETS & LS2
TREC is becoming one of the major InforEAM module >> ressources may be needed (EN-ACE);
Computers are essential: special configuration, guarantee the traceability by anyone in the field;
Computers and Buffer Zones need to be maintained (computers renewal, cleaning, floor renovation, etc.).
30-Sep-16
LS2 committee

19. Conclusion
Most of the Radiation Areas at CERN are already equipped with Buffer Zones;
Only few additional Buffer Zones (4) and computers (6) needed for LS2;
New! HSE-RP is going to equip the Buffer Zones with gamma radiation monitors (GRAMS);
(E)YETS & LS2: HSE-RP performs regularly the inventory. RP takes already care that material is removed from buffer zones but sometimes the owner does not react.
As RP in such a case cannot decide if material should become waste or not we need the endorsement of LSC to classify it as waste after a waiting time of 30 days.
Before the EYETS, responsibilities and budget need to be clarified between HSE-RP, EN-ACE and BE-ASR (TREC / Computers / Buffer Zones).
30-Sep-16
LS2 committee

20. Thank You!
30-Sep-16
LS2 committee