Download 4. Risk Assessment Form

Safety Document (Risk Assessment)
Faculty of Electrical and Electronic Engineering
Department of Electrical Power Engineering
High Voltage Laboratory
Title of Experiment / Test:Project / Academic Supervisor:-
Person Carrying
Out The Experiment
Name:Matrix No:Contact No:Email:-
Safety Documents Valid From:- ______________
To:- ______________
For continuous periods of experimentation only.
Re-validation of this document is required for breaks in
experimentation greater than one month or when test circuit is dismantled and re-assembled.
Level of Supervision:
Choose
one and
tick ‘X’
(to be completed by Supervisor / Head of Laboratory)
Experimentation to be carried out in presence of student’s Supervisor
Experimentation may be carried out providing AE / HoL is in the laboratory
*Head of Laboratory (HoL) or Assistant Engineer (AE) must always be in the laboratory to permit
experimentation to take place in the laboratory.
SACTION TO EXPERIMENT
EXPERIMENTER DECLARATION: I understand the contents of these safety documents. I am aware that any change
in the experiment beyond that identified in these safety documents means that work must stop, the Risk Assessment
reviewed and permission to resume has been given and countersigned by the Project Supervisor or Head of
Laboratory.
Name of Student:
Signed:
Date:
Name of Supervisor:
Signed:
Date:
Name of HoL:
Signed:
Date:
*HoL must be identified and sign here having confirmed the safety documents to be satisfactorily completed.
Document Cancelled: Date:
Name: _________
Risk assessment form ver. 1
8th October 2015
Signature:
Safety Document (Risk Assessment)
METHOD STATEMENT
Title of Experiment / Test:Prepared by:-
Date:-
A. Purpose of Experiment:
B. Equipment Being Used / Circuit Diagram (where appropriate):
C. Experimental Procedure:
Risk assessment form ver. 1
8th October 2015
Safety Document (Risk Assessment)
RISK ASSESSMENT
(must address all hazards identified in hazard checklist)
Title Of Experiment / Test:Prepared By:-
Date:Validated By:-
Checked By:-
(In addition to this risk assessment, a safety commissioning checklist is attached to this document. This checklist is to be
completed before HV supplies can be energised. It is relevant to the ‘Electrical shock from high voltage’ and ‘Fire’ hazards
described in the table below.


Electric shock from high
voltage (max 11kV AC)
Persons carrying out
testing / those close to
equipment


Risk assessment form ver. 1
8th October 2015
Equipment is interlocked so supplies are
isolated when door to cage is opened
All leads leaving from cage have earthed
sheath (current measurements taken at
earthed end of sample, voltage measurement
taken with commercial voltage probe)
Earth stick applied to HV output of transformer
when entering cage
Warning lights and signs are placed on cage
Risk rating
Control measures applied to eliminate /
minimise risk
Likelihood
Persons or Equipment
at Risk
Severity
Hazard (s) & Possible
Consequences
5
Risk
Acceptable?
Residual risk with control
measures applied
1
5
Y
Safety Document (Risk Assessment)

Electric shock from low
voltage (max 230V AC)
Persons entering cage /
working on test
equipment




Fire
Persons within Ferranti
building




Toxic and corrosive gasses
and burning fumes from
thermal decomposition of
polymer material.
Slips (from loss of water used
to wet samples)
Risk assessment form ver. 1
8th October 2015

Persons within B20


Persons entering cage

LV connections to be disconnected before any
work takes place on control equipment
Stickers warning of need to disconnect mains
supply before opening applied to LV control
boxes
Control box to be PAT tested before use to
confirm adequacy of earthing etc.
LV supplies to transformer are exposed but are
within interlocked area
4
2
1
Y
Smoke detector placed above samples to
provide audible notification of any fire (in the
event that this is sensitive to fumes, to be
replaced by a heat detector)
Detector linked into control equipment to
isolate HV supplies in the event of operation
Fire extinguisher available in laboratory
Test equipment not to be left unattended when
initially operated to confirm behaviour of
samples
Heat detectors contained to main building fire
alarm system present within B20 laboratory
3
1
3
Y
Extract fan within B20 to be switched on
before testing commences and to remain on
for period of test
Necessary precautions are described in COSHH
assessment.
2
2
4
Y
Careful handling of water to take place with no
more than is required to be placed within cage
Any liquid spillage to be mopped up
immediately
2
2
4
Y
Safety Document (Risk Assessment)
Trips
Persons entering cage
Chemical contact (preparation
of ammonium chloride test
solution)
Person making solution
Risk Assessment Matrix
Likelihood (1-5) x Severity (1-5) = Risk
(See attached matrix for guidance)
Risk assessment form ver. 1
8th October 2015
Leads to be routed away from walkways where
possible
Any leads that cannot be routed away from
walkways to be covered with rubber matting
PPE (gloves, lab coat, respirator and eye glasses)
to be worn when making up solution
1
2
2
Y
2
2
4
Y
1 – 5: Low: Tolerable – monitor and manage
6 – 8: Medium: Review, introduce further controls to reduce to as low as reasonably possible
9 – 25: High: Intolerable. Do not commence work, further control measures required
Safety Document (Risk Assessment)
RECORD OF CHEMICAL USAGE WITHIN EXPERIMENT
Are Hazards Resulting
From Use Described In
Risk Assessment Table
Above?
Method Of Disposal
Chemical
Reason For Use
Chemical
Data Sheet
Attached?
Ammonium
Chloride
Used to make up solution of correct
conductivity for testing
Yes
Yes
Chemical evaporates during test
(very small volumes used in each
test)
Triton-X100
Used to make up solution of correct
conductivity for testing
Yes
Yes
Chemical evaporates during test
(very small volumes used in each
test)
Risk assessment form ver. 1
8th October 2015
Safety Document (Risk Assessment)
HAZARD CHECKLIST
You should indicate the hazards present in the experiment in the table below. If a hazard is present,
control measures should be stated on the risk assessment. Note that this list is not exhaustive.
Hazard Type
Present
Electric Shock From High Voltage (1kV & Over)
X
Electric Shock From Low Voltage (Under 1kV)
X
Tripping Hazards
X
Slipping Hazards
X
Fire
X
Not Present
High Temperatures
X
Low Temperatures
X
High Pressure
X
Low Pressure
X
Chemical Spillage
X
Chemical Contact (Ingestion / Eye & Skin Contact)
X
High Noise Levels
X
Working At Height
X
Head Height Hazards
X
Production Of Dust & Fumes
X
Manual Handling
X
Production/Use Of Radiation
X
Use Of Asphyxiating Gases
X
Any Other Hazards
X
Risk assessment form ver. 1
8th October 2015
Safety Document (Risk Assessment)
RISK ASSESSMENT SEVERITY MATRIX
SEVERITY VALUE = Potential consequence of an incident/injury given current level of
controls.
5
4
3
2
1
Very High:- Death / Permanent incapacity / Widespread loss
High:- Major Injury (Reportable Category) / Severe Incapacity / Serious Loss
Moderate - Injury / Illness of 3 days or more absence (reportable category) / Moderate loss
Slight: - Minor injury / Illness – Immediate 1st Aid only / slight loss
Negligible No injury or trivial injury / illness / loss
LIKELIHOOD = what is the potential of an incident or injury occurring given the current
level of controls.
5
4
3
2
1
Almost certain to occur
Likely to occur
Quite possible to occur
Not likely to occur
Almost certain not to occur
The multiple of Likelihood with Severity is the risk classification value.
Severity
1
2
3
4
5
1
Likelihood
2
3
4
5
Risk Classification Value
1–5: Low: Tolerable – monitor and manage
6–8: Medium: Review, introduce further controls to reduce to as low as reasonably possible
9–25: High: Intolerable. Do not commence work, further control measures required
Risk assessment form ver. 1
8th October 2015