5 th International High-Energy Physics Technical Safety Forum at SLAC. April 11-15, 2005 Safety Organization and Safety Measures for the Installation of.

5th International High-Energy Physics Technical Safety Forum at SLAC. April 11-15, 2005

Safety Organizationand Safety Measures for the Installation of

LHC Experiments at CERN

Marc Tavlet, GLIMOS / ALICE

CERN, Switzerland, Europe ☺


Safety Organizationand Safety Measures for the Installation of

LHC Experiments at CERN

Outline:

Safety Organization Safety Teams Procedures for personnel (and visitors) Procedures for the work However, accidents do happen… Conclusions ?

5th International High-Energy Physics Technical Safety Forum at SLAC. April 11-15, 2005http://alice.web.cern.ch/Alice/Engineering/pictures/alices2.gif

5th International High-Energy Physics Technical Safety Forum at SLAC. April 11-15, 2005http://maridor.home.cern.ch/maridor/pic_alice/LAYOUT_2K/lay_out.html


Safety Organization at CERN,according to SAPOCO/42

Safety responsibilities follow the

managerial lines :

This scheme will be follow when the

detectors are commissioned and the

experiments are put into operation.

This scheme is valid outside LHC work-

sites. Ex: Test beam areas.

SAPOCO/42 = CERN’s law in mater of safety http://safety-commission.web.cern.ch/safety-

commission/sapoco42/index.html

DG / CEO

PH Dept Head

Tech. Coord. / GLIMOS

Project Leader

Project Engineer

Draftsmen, technicians,

users…


Experimental AreaManager (EAM) = TSO

Work-Package Eng.

Work-Package Supervisors

Workers, technicians,

users…

BUT, Safety Organisation for LHC Experiment Installations

Technical Coordinator/ GLIMOS

Project Leaders

Project Engineers

Designers, technicians,

users…

Overall responsibility of the Experiment( PH Department )

Installation under the responsibility of

TS Department

+ RSO,FGSO

+ SafetyCoordinator


Safety Team / Design

GLIMOS = Group Leader in Matter of Safety,accountable to the PH Department Head,responsible for the overall safety of the Expt.

FGSO = Flammable Gas Safety Officer

RSO = Radiation Safety Officer

INB link-person (French legislation / Nuclear Installations)

Safety Coordinators = professionals who help the Glimos, EAM and any supervisor

+ Experts of the Safety Commission


Use of halogen-free flame-retardant cables (IS-23) Use of halogen-free flame-retardant materials (IS-41)

Halogen-free Printed Circuit Boards wherever possible Avoid Polystyrene, Nylon… (PVC is forbidden !) Metallic pipes for cooling instead of plastic ones Silicone rubber to replace EPDM …

Non-flammable gas mixtures Sniffer + N2 inertion systems Safe switch-off of LV-PS in case of power failure Grounding of all LV- and HV-PS Fix ladders and platforms for better access

Examples of Engineering Designs for better Safety in the Detector


Safety Team / Installation

GLIMOS = Group Leader in Matter of Safety

TSOs = Territorial Safety Officers

EAM = Experimental-Area Manager

Safety Coordinators = professionals who help the Glimos and the EAM

+ Team for First-Aid (in any building)

+ Fire-Fighters of the Safety Commission

+ Inspectors of the Safety Commission


Fire detection already operational Escape routes identified Priority to collective equipment vs personal ones Enforce wearing personal protective equipment as well Use scaffoldings (mounted by trained people) instead of ladders Any platform higher than 80cm must have protection

barriers + plinths Adapted ladders and platforms to access ‘strange’ devices …

Examples of measures taken for better Safety during Installation


Procedure for Staff-Members

Safety Training for any new-comer

+ specific training on the spot by Glimos + supervisor

+ specific training according to activities (welding, lifting, work at height, …)

Access rights (for specific areas - ?)

Safety equipment

- standard

+ specific


Rules for Visitors

Visitors must be accompanied by a trained guide

Max 12 visitors/guide on surface

Max 7 visitors/guide underground

Visitors must wear comfortable shoes + helmet

Specific training (incl. Safety) for guides

Dedicated visit circuits for guided tours


Procedure prior the start of work at experimental areas

Safety Coordinator

E.A.M.PPSPS

V.I.C.

W-P. A.M.

W-P. Eng.

initiates

check

A.O.C.

( + Fire Permit )

Glimos


Display of safety documents+ procedure at the place of work


Review of Accidents during ALICE installation

Place Dept Event Victim Damage

SXL2 PH Machining in the workshop (2 X) hands 0

SXL2 PH Fall from a 80 cm platform bassin 0

SXL2 PH Fall against a machine lip 0

SXL2 TS Break and fall of a hinge from a high door no hinge

SX-2 TS Overhead crane no major

UX-25 TS Overhead cranes (2 X) no minor

UX-25 PH+TS Break of a tie-rod of dipole no tie-rod

UX-25 PH+TS Scaffolding into the dipole no scaffolding


No precise written procedure;

+ Procedure not followed:

- Modification of attachment point.

+ Modification of safety switches.

- Crane hook went into crane frame.

The overhead-crane accident:


Precise procedure was written;

+ Procedure exclude the use of the steel scaffolding

Staff ignored the interdiction.

Consequence (fortunately, no one injured)

The scaffolding accident:


We do have a safety plan, a safety team, safety procedures for personnel, safety training adapted to places and activities, safety procedures, including safety visits for work.

However, accident do happen !

Ways to reduce accident occurrence : More supervision on the spot, TALK to people (team spirit) …any good idea ?

Conclusions

5 th International High-Energy Physics Technical Safety Forum at SLAC. April 11-15, 2005 Safety Organization and Safety Measures for the Installation of.

Documents

better safety

overall safety

safety measures

safety organisation

matter of safety

safety commission slide

mater of safety http

safety team installa