CERN Safety Alarm System Supervisory Board

Minutes of the meeting no. 6 held on 24.01.2002
Subjects:
Author: Uwe Epting
Participants: Pal ANDERSSEN (IT), Paolo CIRIANI (ST), Uwe EPTING (ST) (Secretary), Andre FAUGIER (AC), Silvia GRAU (ST), Pierre NININ (ST), Keith POTTER (EST Board member), Helmut SCHONBACHER (TIS) (Chairman), Luigi SCIBILE (ST), Rudiger VOSS (EP Board member), Wolfgang WEINGARTEN (TIS)
Distribution: Participants, Manuel DELFINO (IT), Lyn EVANS (DG), Paul FAUGERAS (AC), Dietrich GUSEWELL (EST), Philippe LEBRUN (LHC), Jurgen MAY (DG), Stephen MYERS (SL), Rui NUNES (ST), Paul PROUDLOCK (AC), Alberto SCARAMELLI (ST), Dieter SCHLATTER (EP), Carlo WYSS (DG)

1. Personnel Changes

The groups ST/MO and ST/AA have been reorganised as a single group ST/MA. Pierre Ninin acts as group leader of ST/MA and is replacing Greg Kowalik for CERN Safety Alarm System Supervisory Board matters.

Rüdiger Voss is replacing Vincent Vuillemin as member of the CERN Safety Alarm System Supervisory Board.

2. Approval of the minutes of the fifth meeting

The discussion about "Mr. Alarm" has been continued after the last meeting and has been clarified by TIS division. The new definition will be added and distributed with the last minutes. It was agreed that the leader of the group that is executing the work (=ST/MA) is responsible for the correct implementation and handling of the safety alarms.

L. Scibile and G. Kowalik attended the SAPOCO meeting at 05.04.2001 in order to present and discuss the voting system foreseen for the CSAM project. This replaced the foreseen meeting of the Supervisory Board on 7th May 2001. Following an in-depth presentation SAPOCO requested further reports on the CSAM system. The two recommendations at this stage were:

  1. that the Fire Brigade should react to all Level 3 alarms registered on each network i.e. there should be no voting system;
  2. alarm detectors should be installed efficiently, bearing in mind that having more sensors did not always make protection more effective.

With these modifications the minutes are approved.

3. Status report on the CSAM project

Luigi Scibile presented the actual status of the CSAM project. The main topics are:

Detailed information can be found on the CSAM web page at the URL: http://cern.ch/st-proj-csam and in the presentation given by Luigi Scibile. (The link is available on the Safety Alarm System Supervisory Board web page.)

During the discussion the following points were raised:

Network design: it has to be assured that the network is SIL-2 compliant. This is actually under review in the CSAM project. IT Division foresees to install two physical networks: general network: everywhere available and accessible, except LHC underground areas. The Services network will be more difficult to access and will be used by accelerator control and safety alarms. This is a change regarding the initial idea to have a dedicated network only for safety information.

The network power supply for the Meyrin site, SPS and Prevessin sites is not clear yet. According to P. Anderssen, it needs a particular effort and important financial resources to assure this. There is actually no funding for IT division to provide the required network solutions for Meyrin, Prevesssin and SPS sites. This point has to clarified very urgently. The CSAM team and IT will report in the next meeting if a solution could be found or if serious problems still have to be solved.

Performance tests with the CERN recommended SCADA solution have not been successful until now. ST is in negotiation with the supplying company in order to solve this problem.

These points will be discussed in more detail in the next meeting.

The GLIMOSes should be informed about the CSAM web page. Luigi. Scibile should present it at one of the next TIS Safety Coordination meetings for information.

4 Status report on the implementation of safety alarms in the LHC machine

The status report was presented by André Faugier.
Requirements covering fire detection, gas detection, oxygen deficiency, elevators, ÒdeadmanÓ have been reviewed and fixed. Some issues concerning responsibilities for galleries still have to be clarified. It is clear that an oxygen deficiency detection system has to be used, the technical solution (fix or portable) is actually under investigation. It is foreseen to use GSM for emergency voice systems and evacuation buttons for evacuation alarms. The technical and financial issues for the communication and evacuation alarms are not decided yet.
AUG (Arret dÕUrgence): under review
Flood detection: like LEP
AL3 report will be published

Detailed information of the presentation is available at the Safety Alarm System Supervisory Board web page.

5. Status report on the implementation of safety alarms in the LHC experiments

The status report was presented by Wolfgang Weingarten.
Ongoing work in the following projects:

The following projects have been finished during 2001:

The definition of the requirements and the exact number of equipment needed has to be foreseen for mid 2002.

A specification and prototype for the SNIFFER project will be available from March 2002 onwards; afterwards a decision on the realisation will be taken.

The coordination between ST, TIS and the GLIMOSes can still be improved; the concerned people should participate in the different meetings in order to pass the information properly.

6. Next Meeting

This is foreseen in June 2002 with the following topics:

created at Tue Apr 16 17:10:13 METDST 2002 with the ST/MO/IN - Minutes Maker