The document outlines a risk assessment for temporary electrical installations at a workplace, focusing on hazards such as electrocution, fire, and equipment failures. It details the initial risk ratings, control measures, and additional assessments necessary to ensure safety during operations involving distribution boards, temporary electrical works, and site generators. The risk assessment emphasizes the importance of using trained electricians, following proper installation practices, and maintaining equipment to mitigate risks.

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(Jan-2023)
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
dust proof) enclosure with mandatory warning signs;
ii. All openings/holes and penetrations into the DB must be closed to IP 54
rating;
iii. All circuits must be protected by correct size circuit breakers and the DB
must have padlock in addition to the locks already fitted to the DB door;
iv. All 220v/380v supplies must be protected by an RCD with a trip current of
not more than 30mA. Every RCD must be tested frequently by the
competent person;
v. Sockets must only be mounted on the exterior of the DB enclosure. Timber
framed splitter units are not permitted;
vi. All Steel Wired Armour cables must have earthing bond cable connected
from gland to earth bar within the DB;
vii. SMDB’s and DB’s shall be subject to regular inspections, any damaged
units removed from service;
Rain entering
DB’s;
SMDB’s and DB’s
damaged
Remove from site Low
2
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;
4 3
12
High
i. All electricians to be suitably trained 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 securely to structure; All electrical
junction boxes, sockets and fittings to be of suitable quality;
v. Insulation tape shall not be used for cable connections, correct junction
boxes to be used;
vi. All earth connections shall be to standards;
vii. No cables shall trail on the floor; all securely clipped clear of damage or
posing a trip hazard;
viii. Armoured cable used for cables set below ground; Armoured cable shall be
correctly fitted and protected at junction boxes; All cables to be fed through
securely fixed conduit;
Damaged cables
Disconnect supply and 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
Temporary electrical installation to projects, including generators, DB’s and
temporary electrical circuit installation. Use with RA 33 – Temporary Lighting
Relevant Applicable MAS:
 00237 – Temporary Electrics;
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 work place?
Catastrophic (5)
Multiple Fatalities
High 25 High 20 High 15 Medium 10 Medium 5
Can the product or process be substituted for
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 away with
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 worn 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(Jan-2023)
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  Temporary supply
 Generator fires;
 Incident due to incorrect earthing;
 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 subject to regular inspection regime; Units monitored for
excessive exhaust fumes;
vii. Generators sited away from 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