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Working Group LHC Safety Alarms (AL3S)

Working Group LHC Safety Alarms (AL3S). Civil Engineering. Exp Areas. Legal Service. LHC GLIMOS. TIS & FB. DSO. LEP GLIMOS. CONTROLS. ControlRooms. WG-AL3S - Madate. Define the overall concept of Safety Alarm System for the LHC machine and the experiments

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Working Group LHC Safety Alarms (AL3S)

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  1. Working Group LHC Safety Alarms (AL3S) Civil Engineering Exp Areas LegalService LHC GLIMOS TIS & FB DSO LEP GLIMOS CONTROLS ControlRooms WG-AL3S - Recommendations

  2. WG-AL3S - Madate • Define the overall concept of Safety Alarm System for the LHC machine and the experiments • Define the transmission and the display of the Safety Alarms => WG : fundamental recommendations • Define the Safety Alarms during the civil engineering construction phase => Red telephones • Define the transition from the present LEP to the future LHC Safety Alarm System => Project & Group Leaders as work progresses WG-AL3S - Recommendations

  3. WG-AL3S - Main Input & Outcome General Recommendations Experience with present LEP system TechnicalRecommendations User requirements WG AL3S Recommendations for Further Work Other Safety Alarm Systems Standards References Standards WG-AL3S - Recommendations

  4. SPS Experiments Experiments Radiation CPS LHC Accelerator Global Safety Approach Access Meyrin HomogeneousAL3S ConceptCERN wide Prevessin TIS GLIMOS DSO Analysis Implementation Operation Training Unique Responsible Service Design Pilote Testing Documentation AdequateRessources MethodicalEngineeringPractices State-of-the-artTechnology Standards General Recommendations WG-AL3S - Recommendations

  5. Safety AlarmTransmission(SAT) Interface Diagram Off-lineReferenceDatabase DataLoggingSystem HumanComputerInterface CentralAlarmDisplay DataExchangeProtocol Safety and Technical Data(STD) LocalAlarmDisplay SafetyActions TechnicalData Detection WG-AL3S - Recommendations

  6. Further Work (outside mandate of WG-AL3S) • Risk Analysis & Selection of most appropriate sensors, detection systems, actions • Consistent procedures for safety and rescue interventions • Definition of common protocol and data-exchange-mecanism for all control systems • Adapt TIS SI 37 • Procedures to monitor and ensure correct implementation of these recommendations WG-AL3S - Recommendations

  7. IS 37 vs STANDARDS • IS 37 • 3 Classification of Alarms: - Level3 • Significance: accident or serious abnormal situation, especially where people’s lives are or may be in danger • ex: IEC 893-1-1 • 4. Definitions; 4.1 Alarm • A warning of the presence of a hazard to life, property, or the environment. WG-AL3S - Recommendations

  8. REDUNDENCY in Standards • ex IEC 839-5-1 Alarm SystemsRequirements for alarm transmission systems • 4.2 In order to provide for increased communication reliability, more than one communication channel may be used between an alam system and one or more alarm receiving centres. • For the purpose of transmission redundancy, an alarm system may be connected to a remote centre by more than one form of transmission, e.g. dedicated transmission paths and digital communicators using the public switched network. WG-AL3S - Recommendations

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