Download Risk assessment

Risk Assessment Form to be completed in conjunction with the explanatory notes
Officer responsible for assessing the Risk:
Date Risk assessed:
Task description:
K.Tilley, M. Hughes.
12/03/2008
Interlock, Measurement & Soak tests of Q1,Q2,Q3,D1 Dipole Magnetic Fields
Operation
Description
Hazard
Environment
Working
Radiation
with
Number
Exposed
E
V P
Duration
Likelih
ood of
injury
L
3
0.5 day
1
1
0
Existing controls
Severit
y of
injury
S
Risk
LxS
New control measures required
Urgency of
action
1
1
Film badge.
Prior to
working on
magnets.
Rados.
Maintain distance from
synchrotron.
Cleaning of any contamination
on hands etc immediately after
expt.
Environment
Slips, trips and
falls – due to
cabling.
3
1
0
0.5 day
2
Environment
Crane use
3
1
0
0.5 day
1
Cabling carefully
laid out in cabin.
1
3
6
Remove any clutter before work
starts – ensure clear access and
exit ways available
Prior
to
working on
magnets
2
2
Be aware of crane activity. Make
aware of presence.
Prior
to
and during
working on
magnets.
Electrical
Electric shock
3
1
0
0.5 day
2
AC & electrical
connections
signed
off.
Interlocks
checked.
Two
people
required to be
present
whilst
magnet
observations
made. (two mgt
people or 1mgt +
tgt people). Crew
should
be
informed not to
allow access if
only 1 person in
synch.
3
6
Avoid bus bars / copper water
pipe
Maximum
for
D1:
(460MeV/c~1.4T~350A~153Volt
s).
Maximum
For
Quads
at
200Amps:20Volts.
Check p/s operates in current
regulated mode with voltage
limit if available.
Prior
to
and during
work
on
magnets.
Magnetic
fields
Movement
of
magnetic
objects.
Disorientation
in high fields.
3
1
0
0.5 day
2
Two
people
required to be
present
whilst
magnet
observations
made. (two mgt
people or 1mgt +
tgt people). Crew
should
be
informed not to
allow access if
only 1 person in
synch.
3
6
Loose ferrous materials tidied
away.
Maximum field expected ~ 1.4
Tesla at centre. Limit time body
parts in fields > 0.2Tesla, in
accordance with SHE notice #.9.
No pacemakers allowed in exptl
cabin. No magnetic objects
permitted during expt.
During
working on
expt.
Temperature
Heat burns
3
1
0
0.5 day
2
Temperature
measurements &
flow checks to be
made to be made
3
6
Avoid bus bars.
Use temperature interlocks if
available.
Prior
to
and during
work
on
2
before experiment
begins.
Water
All hazards
Slips/leaks
3
1
0
0.5 day
2
Flow checks made
before experiment
begins
Signage to be
used to indicate
magnets are live.
3
magnets.
2
4
Prior
to
and during
work
on
magnets.