1. M.Tavlet, H.Taureg - ALICE
ALICE Safety Systems
The ones managed by TS:
Fire and gas detections, incl. SNIFFER
Radiation monitors for personnel protection (RAMSES)
Access control
Alarms (AUG, evacuation, red tel…)
Alarm transmission (CSAM)
The other ones:
CO2 flush in racks, N2 flush in detector areas
Radiation monitors for material protection ( Rad-Mon + BCM)
The missing ones:
Public address system
Safety Information Panel (SIP)
Note: To add SF6 sensors; study of feasibility ~10 kCHF ; delay = after LHC start-up.
The Technical Coordinator holds the overall responsibility for project management, except safety !
The GLIMOS holds responsibility for safety of the experiment by delegation from EP Div.leader.
he reports to the DL,
he acts on safety issues via the Tech.Coord.,
He is assisted by Safety Coordinators.
M.Tavlet, H.Taureg - ALICE

2. Synopsis of Alarm transmissions via CSAM and DSS
Info in ACR ?? ? ?
DIP (non secure)
DCS
Info &
SW actions
Info in ACR
Secure, local link
Pre-
alarms
Alarms (AL3) C S A M D S
SNIFFER
ODH
gas
smoke
Cut power to group of racks
Smoke det.
in areas ?
Cut power
Interlock equipment
ODH
in areas
???
CCC (TCR)
Action
Flam. gas
in areas
Close cooling water valves
Cut power/gas
Cooling water
temperature
Water flooding
Start pumps
Detector specific action
Ambient
temperature
Dead-man
detector
Fire Brigade
Action
Water leak CRs
Blocked
lifts …
Presence of power
Evacuation
buttons
ITS N2
Release ?
Evac. signal
Detector spec. inputs
Emergency
Stop buttons
Cut power
Stop flam.
Gas ? …
Red
telephones
Local/direct actions
M.Tavlet, H.Taureg - ALICE

3. ALICE requirements about Safety systems managed by TS-CSE
Want all information in ALICE Control Room (ACR)
Re-use synoptic where available
Note: To add SF6 sensors; study of feasibility ~10 kCHF ; delay = after LHC start-up.
The Technical Coordinator holds the overall responsibility for project management, except safety !
The GLIMOS holds responsibility for safety of the experiment by delegation from EP Div.leader.
he reports to the DL,
he acts on safety issues via the Tech.Coord.,
He is assisted by Safety Coordinators.
M.Tavlet, H.Taureg - ALICE

4. ALICE requirements about Safety systems managed by TS-CSE
Fire Detection Systems in Areas (halls, pits, cavern…)
Installed, tested, in operation
Gas Detection Systems in Areas (SG, CR5, cavern)
Partially installed
Not yet in operation
Action matrix defined
Note: To add SF6 sensors; study of feasibility ~10 kCHF ; delay = after LHC start-up.
The Technical Coordinator holds the overall responsibility for project management, except safety !
The GLIMOS holds responsibility for safety of the experiment by delegation from EP Div.leader.
he reports to the DL,
he acts on safety issues via the Tech.Coord.,
He is assisted by Safety Coordinators.
M.Tavlet, H.Taureg - ALICE

5. ALICE requirements about Safety systems managed by TS-CSE
SNIFFER
This has become an expensive system
Therefore, we have minimized it
It appears to be ‘impossible’ (or very expensive and long) to add additional features, such as SF6 sensors
It appears not to be allowed (feasible ?) to change the individual threshold per sensor.
Want all info in the ACR
Adding a full information screen in the ACR appears to be expensive (~ 7-10 kCHF)
Note: To add SF6 sensors; study of feasibility ~10 kCHF ; delay = after LHC start-up.
The Technical Coordinator holds the overall responsibility for project management, except safety !
The GLIMOS holds responsibility for safety of the experiment by delegation from EP Div.leader.
he reports to the DL,
he acts on safety issues via the Tech.Coord.,
He is assisted by Safety Coordinators.
M.Tavlet, H.Taureg - ALICE

6. ALICE requirements about Safety systems managed by TS-CSE
CSAM
Designed only to transmit AL3
Want all info concerning ALICE in ACR
RAMSES
Installation ongoing.
Want information in ACR
Should it be connected to the access safety system ?
Information available at access points ?
Should access be forbidden in case of high radiation level ?
Note: To add SF6 sensors; study of feasibility ~10 kCHF ; delay = after LHC start-up.
The Technical Coordinator holds the overall responsibility for project management, except safety !
The GLIMOS holds responsibility for safety of the experiment by delegation from EP Div.leader.
he reports to the DL,
he acts on safety issues via the Tech.Coord.,
He is assisted by Safety Coordinators.
M.Tavlet, H.Taureg - ALICE

7. ALICE requirements about Safety systems managed by TS-CSE
Access Control System (ACS)
Access to the site should be dissociated from access to the underground.
Example: someone wanting to come at night to the ACR would only need Safety Course Level 2, and we would not have to grant him an underground access (today, LHCI-24).
ALICE internal sectorisation is managed locally (with padlocks and procedures) by ALICE,
ACS is not involved
Note: To add SF6 sensors; study of feasibility ~10 kCHF ; delay = after LHC start-up.
The Technical Coordinator holds the overall responsibility for project management, except safety !
The GLIMOS holds responsibility for safety of the experiment by delegation from EP Div.leader.
he reports to the DL,
he acts on safety issues via the Tech.Coord.,
He is assisted by Safety Coordinators.
M.Tavlet, H.Taureg - ALICE

8. Other Alarm transmissions via DCS
Rack control
Smoke det.
[all racks]
CO2 flush in racks
of C area
Temp. switch
[all racks] or
Cut power+
Flam. gas D C S
Main Temp. Sensor
SW action (non secure) ?
Cut power /rack
Local/direct actions
Radiation
Monitors
SW action (non secure) ?
Extra Temp. Sensors
Cut equipment
Cut power to equip-t or rack(s)
Equipment
Stop buttons
Part of TS-EL control ?
Info in ACR
M.Tavlet, H.Taureg - ALICE

9. Other ALICE Safety Systems
CO2 flush for rack fire-protection (area C)
(This was a project initiated by S.Fratianni who is now in TS.)
Part of the hardware is installed: bottles and hoses.
Still no triggering system; experiments are left on their own to think about, design, build and implement it.
ALICE requests TS to centralize and implement the system
N2 flush for fire-protection of L3 solenoid and FASS
Tanks and pipes still to be installed
Automatic or manual triggering to be decided
Note: To add SF6 sensors; study of feasibility ~10 kCHF ; delay = after LHC start-up.
The Technical Coordinator holds the overall responsibility for project management, except safety !
The GLIMOS holds responsibility for safety of the experiment by delegation from EP Div.leader.
he reports to the DL,
he acts on safety issues via the Tech.Coord.,
He is assisted by Safety Coordinators.
M.Tavlet, H.Taureg - ALICE

10. Missing Safety Systems in ALICE
Public Address System
Useful to transmit info from the ACR to UX
Have common technical solution
Safety Information Panel
Idea from Safety Commission
Display useful info at the entrance of underground areas and in ACR
Essential to have it installed
Note: To add SF6 sensors; study of feasibility ~10 kCHF ; delay = after LHC start-up.
The Technical Coordinator holds the overall responsibility for project management, except safety !
The GLIMOS holds responsibility for safety of the experiment by delegation from EP Div.leader.
he reports to the DL,
he acts on safety issues via the Tech.Coord.,
He is assisted by Safety Coordinators.
M.Tavlet, H.Taureg - ALICE