LHC Fire

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LHC Fire Gas Detection

• Rui Nunes
• ST/AA/AS

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Project Goals

• Install in LHC
• Fire Detection
• Flammable Gas Detection
• Oxygen Deficiency Detection
• Evacuation Systems
• In accordance to User Requirements

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User Requirements

• TIS
• Requests Detection for the PROTECTION OF PEOPLE
• Owners of Buildings
• Request Detection for the PROTECTION OF EQUIPMENT

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Surface Sites

• CERN Sites Divided into Safety Zones

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LHC Surface Sites Strategy

• CERN Sites Divided into Safety Zones

• 1 Fire Panel / Zone
• 1 Gas Panel / Zone

PA1 ATLAS
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LHC Surface Sites
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LHC Point 1 - ATLAS
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LHC Point 18
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LHC Point 2 - ALICE
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LHC Points 32 33
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LHC Point 4
12
LHC Point 5 - CMS
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LHC Point 6
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LHC Point 7
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LHC Point 8 - LHCb
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What happened to the old equipment?

• Removal/renewal of all detection equipment
• Adapt to new use of installations
• Reduce maintenance costs ?
• Replace with less and better
• Remove obsolete/useless
• Improve performance
• Reduce spurious alarms ?
• To achieve this, we need
• Input from users (TIS, ST, Experim, etc)

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LHC Underground
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Experiments

• Experimental Apparatus
• Need for specific devices
• Experimental Cavern
• Need for generalized detection
• Service Caverns
• Need for generalized detection
• Need for specific devices (e.g. racks)

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LHC Experiments - ATLAS
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ATLAS Experiment

• Detect Smoke, Flammable Gas and Oxygen Deficiency
  inside the Detector
• FAGIA WG (Fire And Gas Inside Atlas)
• Collaboration between
• ATLAS Safety (G. Benincasa, M. Hatch)
• ST/AA/AS (R. Nunes)
• EST/LEA (J. Nebout)
• TIS (C. Nuttall, J. Elorza)

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LHC Experiments - ATLAS

• Preliminary Proposal from ATLAS
• 332 tubes
• 178 smoke detectors
• 122 gas detectors

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LHC Experiments - ATLAS
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ATLAS Service Cavern

• Smoke Detection
• Cavern Environment
• Specific Racks
• Gas/O2 Detection

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CMS Experiment

• Specific Detection inside the Detector
• Generalised Detection for Caverns
• Collaboration between
• CMS GLIMOS (R. Schmidt)
• CMS DCS (W. Funk)
• L3 GLIMOS (J. Pothier)
• ST/AA/AS (R. Nunes)
• TIS (F. Szoncso)

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LHC Experiments - CMS
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LHC Experiments - CMS
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LHC Machine

• Fire Detection
• Agreed in specific locations
• UJ 14,16,33,56
• UA 23,27,43,47,63,67,83,87
• RR 13,17,53,57,73,77
• RE all (12,18,22,28,32,38,42,48,52,58,62,68,72,78
  ,82,88)
• Differing opinions from TIS and LHC for tunnel
• Gas Detection
• Awaiting decision for generalized O2 deficiency
  detection from LHC

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LHC Machine (1)
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LHC Machine (2)
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Contracts

• Fire Supply Contract B1133/ST
• Surface
• Gas Supply Contract
• Surface and underground
• Special Contracts for Experiment Specific needs