2. NA CONSOLIDATION & SAFETY SYSTEMS
Y. Kadi, F. Gautheron, E. Solodko, M. Wilhelmsson
85th EA Technical Meeting, 4 July 2017

3. NA-CONS Study: Mandate
Deliver a comprehensive proposal for the North Experimental Area consolidation, including:
All Beam related items
Infrastructure & General Services
Civil Engineering
The Study shall propose implementation scenarios with all possible staging options, considering separately the periods:
prior and during LS2 (highlighting urgent actions)
between LS2 and LS3
as well as during LS3
Y. Kadi,
North Area Consolidation & Safety Systems

4. NA-CONS Study: Proposed Roadmap
Identify most urgent items 2017/2018 and secure budget
Define WBS/PBS and prepare related project documents
Discuss with concerned groups & participate to the safety diagnostic (carried out by EN-DSO)
Identify Consolidation/Upgrade activities together with resources and budget needs
Y. Kadi,
North Area Consolidation & Safety Systems

5. Flammable Gas Detection - SAFETY
BE-ICS in NA-CONS
Safety = priority 1 (hopefully)
Several meetings with EN-DSO, HSE, EP
New distribution of flammable gas detectors in EHN1 (D. Jaillet 83rd EATM)
Still 2 gas barracks (907, 909) but with less detectors (more inert gases)
2 mixing zones on Jura side + 2 mixing zones on Salève side
All PPE zones reviewed along H2, H4, H6 & H8 beam lines.
PPE zones of Jura side already treated, commissioned & validated (HSE)
Finalizing requirements for the Salève side. Hope for commissioning during next YETS
EHN2, ECN3: no particular requirement. Usual maintenance
ECN3: hydrogen detection in the cavern (mixing area) and barrack (bldg. 918)
Y. Kadi,
North Area Consolidation & Safety Systems

6. Gas Distribution - SAFETY
EN-EA in NA-CONS
Les solutions suivantes vont être mise en œuvre (planifiées, budgétisées) :
Doubler les soupapes sur les réseaux de gaz.
Mise en conformité ATEX des baraques.
Les solutions suivantes sont proposées :
Mise en conformité ATEX des points de distributions dans les halls.
Monitoring sur les consommations (débitmètre entrée – sortie).
Y. Kadi,
North Area Consolidation & Safety Systems

7. Oxygen Deficiency Hazard (ODH) & CO2 - SAFETY
BE-ICS in NA-CONS
ODH risk in underground galleries - EHN1
Gas network for nitrogen, argon, CO2, helium
No air circulation in the galleries
Calculations for massive leaks: O2 from 21% to 18% in 72 sec.
Time to escape, no needs for safety mask, but requires:
Access control (already implemented) + ODH portable + CO2 detection
Needs for ventilation. To be discussed with EN-CV
ODH risk in EHN2 galleries
Obsolete system but no plan for renovation before 2020 (LS2)
ODH risk in ECN3 experimental cavern
Fully renovated in Detection in the krypton area. Possible upgrade (LS2)
Y. Kadi,
North Area Consolidation & Safety Systems

8. Fire Detection - SAFETY
BE-ICS in NA-CONS
Already in the framework of the SPS fire safety project
Risk to be assessed by HSE, status report required
Detection technology to be deployed
Fire doors? Segmentation along beam lines? ….not necessary same needs than SPS
Issues already known:
Absence of smoke evacuation in the NA beam tunnels
Obsolete sprinklers
Surface buildings: Evacuation alarm to be renovated
30 km of PVC pipe (air sampling network) must be removed
When? Post LS2. LS2 already heavily loaded
Y. Kadi,
North Area Consolidation & Safety Systems

9. Cryogenics Installations - TE-CRG
Meeting may 25th with D. Delikalis & M. Capeans (TE-PPR)
Items already treated (maintenance or consolidation):
All compressors and cold boxes are OK
UNICOS migration already performed for all the cryo controls
NA62 consolidation (LN2 transfer line for liquid krypton, valves) done
To be consolidated or wishes to be:
6 centrifugal pumps for experimental SC magnets (6x150 kCHF)
Urgent: 3.3kV cells for control and compressors (bldg. 895) -> EN-EL
Stop renting and purchase large LN2 storages (2x20000 l + 1x50000 l)
-> 440 kCHF (from a 2014 cost estimate): long term savings…
TE-CRG will prepare work units description by mid-July
Y. Kadi,
North Area Consolidation & Safety Systems

10. North Area Consolidation & Safety Systems
Magnets - TE-MSC
Current situation:
426 beam line magnets in total
Spares magnets are available for almost all the families
Activities to be done for 2017: zero-field probe replacement, exchange of manifolds, ELETTA refurbishing, renovation of electrical interconnections
Possible safety audit:
Inspection not needed: TE-MSC aware of all the issues related to safety and reliability
Known issues: electrical safety conformity, water leaks, shimming of the coils, replacement of polyurethane pads for the magnets supports
Energy Balance program upgrade:
The program should be validated by physicists
Only ~116 solid yoke magnets can be replaced by laminated ones
Some of these magnets are of the same families as for the EA
Future actions:
TE-MSC to provide to EN-DSO past history of leaks/incidents
TE-MSC to prepare work unit description
EN-DSO to update risk assessment and issue recommendations
Y. Kadi,
North Area Consolidation & Safety Systems

11. Civil Engineering - SMB-SE
Issues which can potentially be included in the consolidation program :
Infiltration of ground water in the tunnels
Motorized doors renovation
False floors
Drainage networks
Roofs
In case of upgrade, all the works will be contemplated in the context of the equipment groups/users future requirements;
Items that should be included in possible safety diagnostic:
Systems for smoke evacuation (sky domes more appropriate than extraction)
Presence of asbestos
Future actions:
EN-EA to contact TSOs and users of all NA buildings
SMB-SE to fill in the work unit description documents
Y. Kadi,
North Area Consolidation & Safety Systems

12. Cooling & Ventilation - EN-CV
EN-CV group is well advanced in terms of identification of consolidation activities. Three work unit description documents were received a month ago.
The activities for 2017/2018:
TDC2/TCC2 ventilation: 5/8 power cubicles already done. Renew remaining 3 power cubicles during YETS 2017/2018
Chilled water renovation all along the years except during LS2
BA80 and BA82: soft start of the pumps
Activities planned for LS2:
Chilled water pipe renovation
Renovation of the cooling towers power control system (building 893)
Replace backing of the cooling towers
Activities post-LS2:
Renovation of the ventilation system of all surface buildings (BAs)
Work on the compressed air system during the YETS and EYETS
Renovation of the Ventilation system of the gas building
Continue the soft start of the pumps
Future actions:
EN-CV to provide remaining work unit description documents
Y. Kadi,
North Area Consolidation & Safety Systems

13. Handling & Transport - EN-HE
The activities for 2017/2018:
Currently no activities are to be done for this year
Replacement of lifts alarm (not with NA-CONS budget)
Activities to be done during LS2:
B. 889 (BA 80) crane revamping + remote operations
B. 888 (EHN2) cranes PR-0539 & PR-0545 revamping or electrical renovation
B. 886 (TCC2) cranes PR-0537 & PR-0544 revamping or replacement
Activities post-LS2:
B. 889 (BA 80) lift
B. 912 (PP851) lift
BAA85 lift
Future actions:
EN-HE to provide work unit description documents
Y. Kadi,
North Area Consolidation & Safety Systems

14. Secondary Beam Lines - EN-EA
Urgent Safety requirements
Buffer zone and RP monitor in BA80
SUSI for EHN2
Closing of galleries in EHN1 and ODH
Key cabinet in EHN1
Dry vacuum pumps for TCC2
Gas safety (safety valves, check valves, purging systems)
Collimator renovation
9 collimators in total this year (program will continue)
Beam line items renovations
Fellows and TTE for NA-CONS Study
PJAS for Cesar
Bend 7
Gas rack for XCET
Note that gas renovation measures are reported separately
Y. Kadi,
North Area Consolidation & Safety Systems

15. North Area Consolidation & Safety Systems
Summary
Discussion with concerned groups still ongoing: HSE-RP, EN-STI, EN-EL, TE-EPC, TE-MPE, TE-VSC, BE- BI, BE-CO, IT-CS
Budget 2017 under control: 82% committed
Target for 2017 to 2027:
Identify Consolidation/Upgrade activities together with resources and budget needs
Y. Kadi,
North Area Consolidation & Safety Systems