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Fire Detection and Fire Fighting in ALICE

Smoke detection in UX cavern and Counting Rooms in PX Alarms sent to CSAM (+ DCS for info) SNIFFER system in the experimental apparatus Alarms sent to CSAM + DCS for info and action Automatic fire fighting in the ITS volume by means of N 2 flush

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Fire Detection and Fire Fighting in ALICE

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  1. Smoke detection in UX cavern and Counting Rooms in PX Alarms sent to CSAM (+ DCS for info) SNIFFER system in the experimental apparatus Alarms sent to CSAM + DCS for info and action Automatic fire fighting in the ITS volume by means of N2 flush Automatic fire fighting in the racks under the Muon-arm by means of CO2 flush Fire Detection andFire Fighting in ALICE Marc Tavlet / Alice GLIMOS

  2. Sniffer system to detect leak of flammable gas emission of smoke (fire) lack of oxygen …in the experimental apparatus ! Sniffer racks equipped with pumps and detectors Alarms sent to CSAM + DCS The SNIFFER Sampling Network Marc Tavlet / Alice GLIMOS

  3. SNIFFER network in L3 Flam.Gas + Smoke Sniffer racks B 18 and B 19 to Muon-arm L3 chicane 2 br. to EMC rail 12 br. to Back-Fr. 12 br. to Mini Fr. 8 br. to HMPID 2 br. to ITS 9 br. to Sp-Fr Marc Tavlet / Alice GLIMOS

  4. SNIFFER network in L3 Oxygen-Deficiency Hazard Sniffer racks B 18 and B 19 to Muon-arm L3 chicane 2 branches to upper volume 2 branches to mid volume 2 branches to lower volume Marc Tavlet / Alice GLIMOS

  5. SNIFFER network in Muon arm Flam.Gas + Smoke Sniffer racks B 18 and B 19 L3 chicane 4 branches above st. 4, 5 for smoke 4 branches above Trig for smoke 2 branches for St. 3 (in dipole) 4 branches below Trig for gas 2 branches in FASS Marc Tavlet / Alice GLIMOS

  6. SNIFFER network in Muon arm Oxygen-Deficiency Hazard 2 lines Sniffer racks B 18 and B 19 L3 chicane “point” 2 branches in dipole 2 branches in FASS Marc Tavlet / Alice GLIMOS

  7. SNIFFER Sampling Network Recapitulation Marc Tavlet / Alice GLIMOS

  8. Tuyaux = NBR ‘Silverpress’ Diamètres : lignes = 7.5/13.5 mm branches principales = 6/10 branches finales = 4/7 Dans une ligne, toutes les branches doivent avoir la même longueur (+/- 10%) Connecteurs disponibles – Tés et croix SNIFFER Sampling Network Données Techniques Marc Tavlet / Alice GLIMOS

  9. Filling from truck 8 m3 of N2 at 200 bar 60 m3 of Ar/N2 mixture at 22.5 bar 52/54 mm steel pipes Main Valve With padlock 1st-flush Valve 2nd-flush Valve to UX-25 via PX-24 Ventil. Unit for ITS to ITS in L3-Magnet Fire fighting in ITS volume by N2 flush Marc Tavlet / Alice GLIMOS

  10. Area C, below the μ platform is difficult to access. Automatic fire fighting installation with CO2, Triggered from DCS-DSS. Local alarm (siren) needed before triggering. 1 bottle/rack (L = 80 cm, Ø = 15 cm) Best offer = 1152 CHF/rack (instead of 900) + maintenance for 5y (232 CHF/rack) Fire fighting in racks, area C by CO2 flush Marc Tavlet / Alice GLIMOS

  11. General smoke detection by TS-CSE, OK SNIFFER by TS-CSE EDMS doc for ALICE in preparation Installation by summer 2006 N2 flush in ITS by ALICE + TS-CV EDMS doc in preparation CO2 flush in C-racks by PH-CMM Installation by end 2006 Summaries of fire detection and fire fighting in ALICE Marc Tavlet / Alice GLIMOS

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