Working Group LHC Safety Alarms (AL3S)

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Working Group LHC Safety Alarms (AL3S)
Civil Engineering
Exp Areas
LegalService
LHC GLIMOS
TIS FB
DSO
LEP GLIMOS
CONTROLS
ControlRooms
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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
• gt WG fundamental recommendations
• Define the Safety Alarms during the civil
  engineering construction phase
• gt Red telephones
• Define the transition from the present LEP to the
  future LHC Safety Alarm System
• gt Project Group Leaders as work progresses

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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
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General Recommendations
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Interface Diagram
Off-lineReferenceDatabase
DataLoggingSystem
HumanComputerInterface
CentralAlarmDisplay
DataExchangeProtocol
Safety and Technical Data(STD)
LocalAlarmDisplay
SafetyActions
TechnicalData
Detection
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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

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IS 37 vs STANDARDS

• IS 37
• 3 Classification of Alarms - Level3
• Significance accident or serious abnormal
  situation, especially where peoples 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.

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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.