EDMS No.
1145836
Rev
Validity
0.0
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REFERENCE
HiRadMat Project – 2011-07
CERN
CH-1211 Geneva 23, Switzerland
Date: 09/02/16
Safety documentation
HiRadMat facility
Hazards inventory
Abstract
This document describes the HiRadMat facility hazard inventory. The hazards have been identified for three
running modes of the facility: operation, maintenance and degraded (in case of malfunction).
Prepared by :
Checked by :
Approved by :
S. Evrard, EN-MEF
M. Meddahi, TE-ABT
I. Efthymiopoulos, EN-MEF
M. Picard, EN-MEF
C. Hessler, TE-ABT
C. Theis, DGS-RP
A. Pardons, EN-MEF
C. Pinto, DGS-SEE
E. Paulat, BE-ASR
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HISTORY OF CHANGES
REV. NO.
DATE
PAGES
0.0
2011-12-11
-
DESCRIPTION OF CHANGES
First version
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TABLE OF CONTENTS
HIRADMAT FACILITY ......................................................................................1
HAZARDS INVENTORY.....................................................................................1
1.
1.1
1.2
GENERAL IDENTIFICATION .....................................................................4
PROCESSES ............................................................................................ 4
HAZARDS ............................................................................................... 5
2.
2.1
2.2
TYPE IDENTIFICATION ............................................................................6
PROCESSES ............................................................................................ 6
HAZARDS ............................................................................................... 6
2.2.1 hazards on operation ................................................................................ 7
2.2.2 hazards on maintenance ........................................................................... 7
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1. GENERAL IDENTIFICATION
1.1 PROCESSES
The method used to identify the hazards is based on the breakdown of the HiRadMat
operational processes. They are represented on Figure 1, where each box represents a
process, the arrows from the left are inputs, the outputs go to the right and the
procedures enforceable are coming from down below.
Figure 1 – Operation processes of an experiment at HiRadMat
To identify them, the processes are numbered and then divided into sub-processes,
which are also numbered after the parent process. The sub-processes are listed with
the corresponding numbers in Table 1 where the hazards can be investigated for each
task in more details.
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1.2 HAZARDS
SAFETY
FILE:
Process:
Subprocess:
No.
2.1.1
2.1.2
2.1.3
2.1.4
LIST OF
HAZARDS
HiRadMat
operation
Experiment
installation
Work unit,
tooling,
material,
substances
Descente du
matériel dans le
monte-charge
BA7
Installation des
caméras sur le
pont roulant
Installation du
pupitre vers le
pupitre de
commande du
pont roulant
Raccordement
du réseau et de
l'alimentation
Hazard
Hazard
Potential
High
Safety rules known
and available
Low
Process
n°
2
Subprocess n°
2.1
Rules covering
the work
Yes
Lifting and
carrying
loads
x
Lift handling by personnel
EN/HE for transport
x
Electrical
installation
and
equipment
x
Maintained equipment
C1 – Electrical safety code
x
No
Partly
Need
for
speciali
sts
Table 1 – HiRadMat hazards identification on remote table installation in TNC
This document allows a detailed identification of the work unit, tooling, material and
substances involved at each stage of the activity (column 2), and thus an accurate
identification of the corresponding hazards (column 3).
The potential (column 4) can be assessed on the reversible or non-reversible effects of
the hazard.
The safety rules or procedures in force ruling the hazard are listed column 5 and in
column 6 is seen if these rules entirely cover the work regarding the hazard. If it is not
covered, the column “Need for specialist” will be checked and a risk analysis will be
performed.
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2. TYPE IDENTIFICATION
2.1 PROCESSES
This table sums up the processes identified in HiRadMat and requiring identification on
hazards. The progress on the analysed processes is defined as follow:

in green the identification has been completed

in orange the analysis is on going

in black the procedure has to be identified with operators
PROCESSES LINKED TO THE OPERATION
PROCESSES LINKED TO THE
MAINTENANCE
Tested equipment installation in lab
TNC relighting
Table installation
AUG tests
Activated table handling to cooling area
PR532 maintenance in TJ7
Cooled table removal from TNC
PR532 annual load test
Containment + experiment separation from table
PR532 repair in TNC
Gas and or vacuum connection
Drain network maintenance
Gas and or vacuum disconnection
Elevator & lifts maintenance
Survey check of the 3 base tables
Air Handling Unit maintenance
New cable pulling
Radiation monitoring maintenance
Plug-in system exchange
Fire detection tests
Patrol TNC
Dump and upstream collimator exchange
Table 2 – Progress on hazard identification
This table will be updated when more analyses are performed.
2.2 HAZARDS
Three functioning modes are considered: normal operation, maintenance and
degraded mode 1 . In the following tables, the hazards due to operation and
maintenance in HiRadMat are summarized.
The degraded modes will appear once the study is done.
1
Degraded mode : Partial or just ticking over operation of a process due to a malfunction. A particular organization
can continue operating while preparing for troubleshooting.
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2.2.1 HAZARDS ON OPERATION
Processes
Covered:
Yes/No
Hazards
Comments
2.1 Table transport to
irradiation area
2.1.1 Gaz and vacuum
connexion on table in
TNC
2.3.1 Gaz and vacuum
disconnexion from
table in TNC
Activated dump
Electrical equipment
Yes
Activated dump
Electrical equipment
Yes
2.5 Patrol in TNC
Activated shielding
Yes
BA1 Activity in TNC
Radioactive area
Yes
DIMR
2.3.2 Table transport
to cooling area
2.4.1 Table removal
from cooling area
Table 3 – Identified hazards on operational processes at HiRadMat
2.2.2 HAZARDS ON MAINTENANCE
Processes
Hazards
3.1 Fire
detection tests
3.2 Absolute
filters exchange
in ventilation
3.3 Evacuation of
condensate
water from
dehumidification
unit
3.4 Dump and
upstream
collimator
exchange
3.5 Radiation
monitors control
Type of
Covered:
maintenance Yes/No
Radioactive area
Preventive:
annual
Yes
Contaminated filters
Preventive:
check filter state
Yes
Radioactive water
Preventive:
check water
level
Yes
Activated dump
Corrective
Yes
Comments
DIMR
Preventive:
annual
Table 4 – Identified hazards on maintenance processes at HiRadMat