Access and Alarm Safety Systems · 2011. 11. 23. · Access and Alarm Safety Systems - Activities...
Transcript of Access and Alarm Safety Systems · 2011. 11. 23. · Access and Alarm Safety Systems - Activities...
Access and Alarm Safety Systems -Activities for the 2012/2013 Long Shutdown
By S. Grau, in collaboration with R. Nunes and T. LadzinskiIn the name of the Access and Alarm Team
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Table of contents
Activities of maintenance, consolidation, upgrades and new installations on:
1. Alarm systems2. Access systems
Impact on LHC activities – injector chain work
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MaintenanceAutomatic Fire Detection Systems
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• Planning▫ 1/year, compulsory (IS37)▫ OK 9 weeks of Xmas Break for
underground installations▫ Quarterly maintenance: minimize
spurious alarms• Constraints
▫ Surface installations: Run & T. Stop• Potential Risks (if not done)
▫ Increase of latent faults => reduce safety and availability (spurious alarms)
• Impact if shutdown moves to 2013▫ Annual maintenance- Xmas Break▫ Quarterly maintenance- T. Stops
• Preventive maintenance▫ Visual inspection▫ Functional and alarm test▫ Cleaning of air sampling
networks▫ Replacement of components
ConsolidationR2E relocation of fire detectors- Point 1/5/7
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• Remove smoke detectors from radiation critical areas▫ RR13/17▫ RR53/57▫ UJ56▫ RR73/77▫ UJ76
• Planning▫ Long Shutdown▫ 3-4 weeks/item
• Constraints▫ Dependency with EN/EL▫ 2-3 days of service interruption (no
detection)
• Potential Risks (if not done)▫ Increase of detected/latent faults▫ SEE destructive events (CNRAD
test)
• Impact if shutdown moves to 2013▫ Partially implemented
MaintenanceAutomatic Gas Detection Systems
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• Preventive maintenance▫ Oxygen deficiency +
Flammable gases▫ Visual inspection▫ Functional and alarm test▫ Calibration of detectors▫ Replacement of components
• Planning▫ 1/year, compulsory (IS37)▫ OK 9 weeks of Xmas Break for
underground installations▫ Quarterly: minimize spurious alarms
• Constraints▫ Surface installations: Run & T. Stop▫ Intersite doors open
• Potential Risks (if not done)▫ Increase of latent faults => reduce
safety and availability (spurious alarms)
• Impact if shutdown moves to 2013▫ Annual maintenance - Xmas Break▫ Quarterly maintenance - T. Stops
ConsolidationUnderground Gas centrals - Point 1 and 5
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• Improvement at Point 1▫ Split USA15 gas central in 2
racks Currently saturated
• Improvement at Point 5▫ Split USC55 gas central in 2
racks Separation of Machine
/Experiment detection Currently saturated
• Planning▫ Long Shutdown▫ Several weeks/central
• Constraints▫ Detection interruption (UX15,
USA15, USC55, UXC55)▫ Important compensatory measures
and procedures
• Potential Risks (if not done)▫ Impossibility to add new
sensors/contacts
• Impact if shutdown moves to 2013▫ Implementation delayed
MaintenanceEmergency Evacuation, Beam Imminent Warning
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• Preventive maintenance▫ Visual inspection▫ Functional and alarm test▫ Sirens test together with ODH flash test
▫ Replacement of components
• Planning▫ 1/year, compulsory (IS37)▫ OK 2 weeks of Xmas Holidays
• Constraints▫ During “Cold Gas He standby”▫ Intersite doors open▫ Nobody in the machine/experiments
• Potential Risks (if not done)▫ Increase of latent faults => reduce
safety and availability
• Impact if shutdown moves to 2013▫ Annual maintenance-Xmas Holidays
MaintenanceSNIFFER – fire and gas detection inside Experiments
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• Preventive maintenance▫ Visual inspection▫ Functional and alarm test▫ Cleaning of air sampling
networks▫ Replacement of components
• Planning▫ 1/year, compulsory (IS37,
IEC61508)▫ Minimum 10 weeks (Xmas Break, T.
Stops)• Constraints
▫ Detection interruption per module▫ Accessibility to US15 required
• Potential Risks (if not done)▫ Increase of latent faults => reduce
safety and availability (spurious alarms)
• Impact if shutdown moves to 2013▫ Annual maintenance - Xmas Break
and Technical Stops
• Preventive maintenance▫ Mechanical maintenance of
doors and access points▫ Acquisition chain tests (from
doors, power converters, dumps, etc... to PLC)
MaintenanceAccess –LASS/LACS
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• Planning▫ 1/year (stated in “Regles Générales
d’Explotation LHC”)▫ OK 9 weeks of Xmas Break▫ Limiting other activities▫ Very important before start of the LHC
• Constraints▫ Reduced availability of access point▫ Dependencies with equipment groups▫ DSO tests (2 day, before restart)
• Potential Risks (if not done)▫ Increase of latent faults => reduce
safety and availability• Impact if shutdown moves to 2013
▫ During Xmas Break
• Improvement of video system▫ Avoid image freezing▫ Improve fluidity of images Install encoders, review
archiving architecture (PAD)
• Improvement IT network▫ Increase PAD availability by
reducing dependency of network components
Consolidation - AccessVideo system and IT network
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• Planning▫ Long Shutdown▫ Several months
• Constraints▫ Reduced availability of access point▫ Video: migration all at the same time▫ Network: design phase in
collaboration with IT, work mainly by IT
• Potential Risks (if not done)▫ -
• Impact if shutdown moves to 2013▫ Implementation delayed
• Relocation of LACS racks▫ UJ56, UJ76
• Displacement of door▫ UJ561=YCPY01
Consolidation - AccessR2E effects on Access
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• Planning▫ Long Shutdown▫ Several weeks/site
• Constraints▫ Dependencies with EL and IT▫ 3 days testing/site (no access on
concerned octant)
• Potential Risks (if not done)▫ Increase of latent faults, reduce
safety and availability
• Impact if shutdown moves to 2013▫ Partial implementation
• Reliable acquisition of safety signals from “overpressure doors” and apply the necessary safety actions
New Installation - AccessInterlock of “overpressure doors”
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• Planning▫ Long Shutdown▫ Several weeks/site
• Constraints▫ Risk analysis and specification
required▫ Work with TE/MPE for reliable
Power Interlock Controller link • Potential Risks (if not done)
▫ Major He Release containment during magnets powering
▫ Ensure correct ventilation path for tunnel activated air
• Impact if shutdown moves to 2013▫ Implementation delay
• Allow for maintenance in external envelope during run periods (PM Shafts)▫ Additional temporary
physical barrier▫ Absence of constraints during
Technical Stops
New Installation - AccessAccess envelope modification
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• Planning▫ Long Shutdown▫ Several weeks/Top of Pit access
point
• Constraints▫ Technical solution to be defined▫ Possible impact on civil engineering
GS/SE
• Potential Risks (if not done)▫ Reduces availability of access system
• Impact if shutdown moves to 2013▫ Implementation delayed
New Installation - AccessNew access point in TZ32 and PZ65
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• TZ32 – CLIC alignment▫ New access zone
• PZ65 – when PM65 unavailable▫ New access point
• Planning▫ Long Shutdown▫ Several item
• Constraints▫ PZ65- to be approved▫ Possible impact on civil engineering ▫ Dependencies with EL, MME
(integration)
• Potential Risks (if not done)▫ Reduces availability of access system
• Impact if shutdown moves to 2013▫ Implementation delayed
PS work – impact on LHC activities
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• PS Primary Areas Access Renovation▫ New access control system
(doors, access points) ▫ New access safety system
(interlocks)▫ Deployment of a Beam
Imminent Warning and Evacuation system
• Resources▫ The same team as for the LHC
• Impact if shutdown moves to 2013▫ Positive impact: more time to
validate the new system and prepare the migration
Thank you for your attention
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