WG-AL3S - Recommendations 1H. Laeger; SAPOCO 9/11/98

Working Group LHC Safety Alarms (AL3S)

DSOTIS & FB

LHC GLIMOS

CONTROLS

Civil EngineeringLegal

Service

ControlRooms

LEP GLIMOS

Exp Areas

WG-AL3S - Recommendations 2H. Laeger; SAPOCO 9/11/98

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 3H. Laeger; SAPOCO 9/11/98

WG-AL3S - Main Input & Outcome

Experience with present LEP system

User requirements

Other Safety Alarm Systems

Standards

WG AL3S

TechnicalRecommendations

Recommendations for Further Work

References

Standards

General Recommendations

WG-AL3S - Recommendations 4H. Laeger; SAPOCO 9/11/98

General Recommendations

MethodicalEngineering

PracticesState-of-the-art

Technology Standards

Experiments

HomogeneousAL3S Concept

CERN wide

Meyrin Prevessin

CPSSPS

LHC

Global Safety

Approach

Accelerator

Experiments

Access

Radiation

AdequateRessources

Unique Responsible

Service Design

Implementation

Testing

Operation

Documentation

TrainingAnalysis

Pilote

TISGLIMOS DSO

WG-AL3S - Recommendations 5H. Laeger; SAPOCO 9/11/98

Interface DiagramOff-line

ReferenceDatabase

DataLoggingSystem

CentralAlarmDisplay

HumanComputerInterface

DataExchangeProtocol

SafetyActions Detection Technical

Data

Safety and Technical Data

(STD)

LocalAlarmDisplay

Safety AlarmTransmission

(SAT)

WG-AL3S - Recommendations 6H. Laeger; SAPOCO 9/11/98

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 7H. Laeger; SAPOCO 9/11/98

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 8H. Laeger; SAPOCO 9/11/98

REDUNDENCY in Standards ex IEC 839-5-1 Alarm Systems

Requirements 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.