Installation of distribution boards to work areas • Electricity • Electrocution; • Fire; Temporary electrics - offices • Electrical connections and terminations • Use of untrained electricians for electrical works; • Use of substandard electrical fixtures and fittings; • Use of substandard connections; • Non-adherence to colour coding of wiring; • Incorrect earthing; • Tripping hazard; Damage to unprotected cables; • Use of incorrectly rated fuses; Site generators – offices and site • Temporary supply • Generator fires; • Incident due to incorrect earthing; • Fuel leakage – environmental risk; • Fuel storage; • Noise;

1. HEALTH SAFETY AND ENVIRONMENT Author: Approved:
RISK ASSESSMENT: ACT/HSE/RA 001 WORKPLACE TEMPORARY ELECTRICAL SUPPLY
Issued: Rev. Date:
Revision: 0
Page 1 of 2 HSEQ -Rev-01(Aug-2018)
No
Specific Task Step
(In sequence of
works)
Hazard Details Consequence/Risk
Initial Risk
Rating Control Measures Residual Risks
Additional Control
Measures
RR
L C RR
1
Installation of
distribution boards to
work areas
 Electricity
 Electrocution;
 Fire;
4 4
16
High
i. All distribution boards (DB) will be within a locked,steel,IP 54 (water and
dustproof) enclosure with mandatorywarning signs;
ii. All openings/holes and penetrations into the DB mustbe closed to IP 54
rating;
iii. All circuits mustbe protected by correct size circuitbreakers and the DB
musthave padlock in addition to the locks alreadyfitted to the DB door;
iv. All 220v/380v supplies mustbe protected by an RCD with a trip current of
not more than 30mA. Every RCD mustbe tested frequently by the
competentperson;
v. Sockets mustonly be mounted on the exterior of the DB enclosure. Timber
framed splitter units are not permitted;
vi. All Steel Wired Armour cables musthave earthing bond cable connected
from gland to earth bar within the DB;
vii. SMDB’s and DB’s shall be subjectto regular inspections,anydamaged
units removed from service;
Rain entering
DB’s;
SMDB’s and DB’s
damaged
Remove from site Low
2
Temporaryelectrics -
offices
 Electrical
connections and
terminations
 Use of untrained electricians for
electrical works;
 Use of substandard electrical fixtures
and fittings;
 Use of substandard connections;
 Non-adherence to colour coding of
wiring;
 Incorrect earthing;
 Tripping hazard; Damage to
unprotected cables;
 Use of incorrectly rated fuses;
4 3
12
High
i. All electricians to be suitablytrained and experienced in the works;
ii. All wiring,connections and terminations inspected prior to connection to
live supply;
iii. All wiring to follow colour coding standards; All fuses shall be to correct
rating for electrical system or equipment;
iv. All junction boxes and sockets fixed securelyto structure; All electrical
junction boxes,sockets and fittings to be of suitable quality;
v. Insulation tape shall not be used for cable connections,correctjunction
boxes to be used;
vi. All earth connections shall be to standards;
vii. No cables shall trail on the floor; all securelyclipped clear of damage or
posing a trip hazard;
viii. Armoured cable used for cables setbelow ground; Armoured cable shall be
correctly fitted and protected at junction boxes; All cables to be fed through
securelyfixed conduit;
Damaged cables
Disconnectsupplyand rectify
or remove. No taped
connections
Low
Project Name: xxx
RA Ref No.: xxx
RA compilation
Date:
Review date:
Date:
Compiled by:
Reviewed by:
Approved by:
Overall Task Details
Temporaryelectrical installation to projects,including generators,DB’s and
temporaryelectrical circuit installation.Use with RA 33 – Temporary Lighting
Relevant Applicable MAS:
 00237 – TemporaryElectrics;
Additional Training required: NOC’s Required for task:
RISK SCORE CALCULATOR
Use the Risk Score Calculator to Determine the Level of Risk of each Hazard
What would be the
CONSEQUENCE
of an occurrence be?
What is the LIKELIHOOD of an occurrence? Hierarchy of Controls
Frequent/Almost certain (5)
Continuous or will happen
frequently
Often (4)
6 to 12 times a year
Likely (3)
1 to 5 times a year
Possible (2)
Once every 5 years
Rarely (1)
Less than once every 5
years
Can the hazard be Eliminated or removed
from the w ork place?
Catastrophic (5)
Multiple Fatalities
High 25 High 20 High 15 Medium 10 Medium 5
Can the product or process be substitutedfor
a less hazardous alternative?
Serious (4)
Class 1 single fatality
High 20 High 16 High 12 Medium 8 Low 4
Can the hazard be engineered aw ay w ith
guards or barriers?
Moderate (3)
Class2 (AWI or LTI) or Class 1
Permanently disabling effects
High 15 High 12 Medium 9 Medium 6 Low 3
Can Administration Controls be adopted
I.e. procedures, job rotation etc.
Minor (2)
Medical attention needed, no work
restrictions. MTI
Medium10 Medium 8 Medium 6 Low 4 Low 2 Can Personal Protective Equipment &
Clothing be w orn to safe guard against
hazards?Insignificant (1)
FAI
Medium10 Medium 4 Low 3 Low 2 Low 1

2. HEALTH SAFETY AND ENVIRONMENT Author: Approved:
RISK ASSESSMENT: ACT/HSE/RA 001 WORKPLACE TEMPORARY ELECTRICAL SUPPLY
Issued: Rev. Date:
Revision: 0
Page 2 of 2 HSEQ -Rev-01(Aug-2018)
No
Specific Task Step
(In sequence of
works)
Hazard Details Consequence/Risk
Initial Risk
Rating Control Measures Residual Risks
Additional Control
Measures
RR
L C RR
3
Site generators –
offices and site  Temporarysupply
 Generator fires;
 Incidentdue to incorrectearthing;
 Fuel leakage – environmental risk;
 Fuel storage;
 Noise;
4 3
12
HIGH
i. Generators to be suitable size and capacity for the task, with maintenance
record;
ii. Generators to have suitable earth rod connected at all time;
iii. Fire extinguishers to be located close to generators;
iv. Generators to be fitted with drip trays;
v. Fuel tanks to be bunded to 110% capacity, bunds to be sealed with
delivery hoses retained inside bund;
vi. Generators to be subjectto regular inspection regime;Units monitored for
excessive exhaustfumes;
vii. Generators sited awayfrom combustible storage areas,offices and
welfare areas due to risk of fire and noise;
Fuel leaks
Area bunded and spill area
removed as hazardous waste
Low