2. Safety aspects of LIU Outline: Safety documentation management
Anne Funken (Project Safety Officer), Dario Carloni BE-ASR
Marco Andreini, Fabio Corsanego, Ana Cunha, Dorine Fallavier, Jonathan Gulley, Sonja Kleiner, Beatriz Leon, Simon March, Saverio La Mendola, Cécile Pinto, Sabrina Schadegg, Olivier Tison HSE-SEE
Sanja Damjanovic, Doris Forkel-Wirth, Robert Froeschl, Stefan Roesler, Luisa Ulrici, Helmut Vincke, Joachim Vollaire (presenting), HSE-RP
Outline:
Safety documentation management
Conventional Waste declaration
Safety Milestones
Radiation Protection activities for LIU (design)
Radiation Protection preparatory activities for LS2
Radioactive Waste management
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

3. General safety of LIU – Management of the documentation
As for all projects, a safety documentation (Safety File) is required to demonstrate that the new systems or facilities:
Are being designed respecting safety principles and
Can be constructed, commissioned, operated and dismantled safely
The Safety File covers occupational health and safety, the protection of the environment and the safe operation of CERN’s Installations
The LIU project is divided in Work Packages (WP), i.e equipment or services delivered by the different groups. Each WP has one WP Holder
Due to the extend of the project which covers the upgrade of five different accelerators, the concept of Safety Package (SP) has been introduced
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

4. Status of the safety documentation
Conventional hazards identified at this stage
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

5. Status of the safety documentation
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

6. Safety during shutdown installation
Engineering Change Requests (ECRs) prepared by equipment groups include the hazards and the related control measures
Documents to be provided by the equipment groups according to the HSE Launch Safety Agreement (LSA): design compliance, conformity of equipment, procedures (part of the Safety Files of the Safety Packages)
Standard CERN-wide procedures applicable (Intervention Management Planning & Activity Coordination Tool, Joint Inspection Visits, Traceability of Radioactive Equipment at CERN, principle of As Low As Reasonably Achievable)
Facility coordination meetings at machine level ensure the management of the planning and the coactivity
Safety Support Officer LS2 appointed for the injectors (A-P. Bernardes)
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

7. Conventional Waste handling
Waste inventory required according to the LSA
HSE template proposed for the non-radioactive waste inventory/forecast, considering the waste categories that are already declared through the CERN-wide annual waste inventory
Inventory to be filled in during the project phase, focusing on operation, shall inform about the annual waste production
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

8. Conventional Waste handling
Further improvement: after the EYETS , the ECRs will include a new line allowing the declaration of the conventional waste produced during the worksites
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

9. Safety milestones
Approval and release of the Safety files of the LIU Safety Packages and/or Engineering Change Requests
HSE-SEE regulatory controls (safety inspections according to Safety Instruction IS4)
Verification of the conformity of equipment and installations (electrical, handling, pressure and building inspections)
Safety file compliance
Verification that the prevention and controls measures defined in the Safety Files and/or ECRs are implemented and functional
Hardware permits and Beam permits
Check-list of controls signed off by the corresponding responsible persons (installation completeness, access safety system, safety file compliance, independent validation of the access safety system by the DSO of the BE department also called “DSO tests”, patrol, RP)
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

10. RP documentation and RP studies
RP work-packages within LIU (Linac4, PSB, PS, SPS and LIU ions)
RP performs studies and provides advices for all upgrades presenting radiological implications (beam dumps, collimators, scrapers, energy increase, beam losses…)
New PSB beam dump installation and PS shielding re-enforcement completed in LS1
Studies documented in Technical Notes and summarized in RP Safety Files (stray radiation and shielding, residual dose rate, induced activity, air and cooling water activation, RP monitoring…)
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

11. Linac4 RP studies and support
Linac4 Safety and RP documentation submitted to the authorities (ASN/OFSP) and the official “homologation” letter should be received soon
Follow-up commissioning and installation phases
RP studies for the Half Sector Test, the Linac4 connection to the Linac To Booster transfer line (LTB) and for the shielding of the new beam dump at the end of the emittance measurement line (LBE)
EDMS &
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

12. Linac4: Connection to the Linac To Booster transfer line (LTB)
New “access sectorisation”:
the “end” of Linac2 is becoming an access sector of the PS Switch-yard
New shielding element specified
Linac2 parts to be removed are identified and included in the radioactive waste forecast of LS2
EDMS
New shielding
L4T to LT
Linac2 tunnel
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

13. Linac4: Emittance beam line dump (LBE) and shielding at the PS/PSB interface
Commissioning of the Linac to Booster line with beam up to the emittance line dump (LBE) during LS2 (PSB in access mode)
Shielding between the PS and PSB modified to allow the integration of the LBE dump
After LS2: LBE dump shielding reduced (for ergonomic reasons) and combined with a modification of the logic of the access system preventing H- beam sent to the LBE area while the PSB is in access mode
No change for ions operation
Proposal endorsed by all concerned stakeholders and the PS Complex Safety Advisory Panel (PS-CSAP)
H- to the LBE dump
FLUKA model of the PS/PSB area
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

14. PS Booster
Effects (from a RP standpoint) of beam energy and intensity increase assessed and mitigated when needed
PSB injection region with new charge exchange injection (LS2)
Detailed residual dose rate studies and Work and Dose Planning of interventions
PSB Scrapers (LS2)
Concentrate the now distributed beam losses at one point in the ring
Reduction of residual dose rates at most locations along the PSB ring
Optimization of scraper material and interventions currently ongoing
PSB injection – Residual dose rate
Material comparison for the internal dumps
EDMS &
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

15. PS
Machine development (MD-1543) done in 2016 to validate the efficiency of the shielding on top of the extraction area
Replacement of internal beam dumps (SS47/SS48)
Ongoing study (the functional specification is being updated)
Dose Rate Objective for the extraction shielding: 10 µSv/h
Achieved with a comfortable safety margin
First dose rate objective after LS1
As built (civil engineering)
Measured in 2016
PS internal beam dump study
(stray radiation with dump in SS75)
(ongoing)
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

16. SPS
1 week cooling time
Horizontal view
1 hour cooling time
Vertical view
mSv/h
Unshielded beam dump (Long Straight Section 1) replaced by shielded dump in Long Straight Section 5
Scrappers and Target Collimator Dump Injection (TCDI) collimator in the transfer line are also being studied
Passage
MARBLE
Present Beam dump (LSS1)
Future beam dump in LSS5
Several mSv/h to be compared with tens of mSv/h for the present dump (LSS1)
EDMS &
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

17. RP preparatory activities for LS2
RP resources: tendering process for RP service contract (to start in June 2017 for 4+3 years) completed and firm selected
Strategy for radioactive waste management has been defined with the objective of managing the quantity of waste expected during LS2 (see next slide)
Operational Radiation Protection:
RP requirements transmitted in LS2 preparatory meetings and facility coordination meetings (training, ALARA procedure, operational dosimetry, traceability, waste acceptance criteria….)
RP cool-down requirements for access to facility and start of majors interventions integrated in overall LS2 planning
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

18. Radioactive waste management
RWTC Operation Eliminated RW Net Volume
To be compared to a volume of 1800 m3 during LS1
2016: net volume of eliminated waste equal 652 m3 (corresponds to about 1200 m3 before treatment)
Forecast of radioactive waste volume needs regular update
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

19. Summary
The LIU Safety structure is in place and Safety well integrated in the project, including the management of conventional waste
Editorial work for the Safety documentation is ongoing, in parallel with the ECR process (hazards and control measures announced by the equipment groups)
Ionizing radiation hazards related to the LIU project are well identified and mitigated
Connection of Linac4, design of new systems such as beam intercepting devices, operation of the injectors with LIU beam parameters
Strategy defined to manage the radioactive waste expected during LS2
Equipment group:
Update waste forecast
Comply with the radioactive waste acceptance criteria
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

20. Spare slides LHC Performance Workshop 23-26 January 2017
Safety aspects of LIU Joachim Vollaire

21. LIU Safety Packages
A SP comprises a set of systems located in a same location under the responsibility of several groups. The LIU project includes 16 SPs (and 90 WPs).
A Safety Package Coordinator (SPC) is appointed for each SP. The SPC is acting as the technical link person for the corresponding SP.
A SP does not change the fact that each group remains owner and responsible of their own Work Package (WP), which are covering their equipment or services.
The HSE Launch Safety Agreements (LSA) covering the conventional safety aspects are produced at the level of the SPs.
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

22. Concept of Safety Package: LIU-PSB example
PSB Rings
Injection
Extraction (BTY excluded)
4. New bldg.245
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

23. Safety documentation of the LIU project: LIU-PSB example
Once the system/facility of a SP is in operation, the corresponding parts of the Safety File will be attached to the Safety File of the PSB
PSB Safety File
Part 1 Descriptive
Part 2 Demonstrative
Part 3 Operational
Part 4 REM
Goal, motivation, brief description of the systems/facility focusing on the safety aspects
Part 1 Descriptive
List of hazards, risks assessment, mitigation measures
Part 2 Demonstrative
List of procedures required to operate and maintain the systems/facility safely, to dismantle it and dispose of its components safely
Part 3 Operational
Safety documents which demonstrate the compliance: test reports, certificates of conformity
Inspections, safety reports, non-conformities, near-misses, incidents/accidents, experience gained
Part 4 Records, Experience, Monitoring (REM)
LIU-PSB Safety Files
PSB-Rings
PSB-Bldg.245
PSB-Extraction
PSB-Injection
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

24. Storage of the safety documentation for the LIU project
Operation
phase
Project
phase
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

25. Safety permits A Safety permit will be issued for each major phase
Installation phase
Hardware Commissioning
Beam Commissioning
Hardware (Commissioning)
Permit
Beam Permit
Courtesy: Christelle Gaignant
LHC Performance Workshop January 2017
Safety aspects of LIU Joachim Vollaire

26. LHC Performance Workshop 23-26 January 2017