This document outlines a risk assessment for sheet piling operations, focusing on various hazards associated with using mobile rig equipment on site. Key hazards include unauthorized rig operation, collisions, operator competency, and environmental considerations, with prescribed control measures and residual risks detailed for each. A hierarchy of controls and safety protocols are emphasized to minimize risk and ensure compliance with safety standards.

1. HEALTH SAFETY AND ENVIRONMENT Author: Approved:
RISK ASSESSMENT: ACT/HSE/RA 001 Sheet Piling Operations (Temporary Works)
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
P S RR
1
Sheet piling Rig
checks on arrival to
site
PRIOR TO USE
 Use of Sheet piling
Rig
 Unauthorized operation of the mobile
rig resulting in incident;
 Failure due to use of un-certificated
rig;
3 4
12
HIGH
i. All Sheet piling rigs to be Third Party Certificated by a DM approved
inspector, documentation available on arrival to site;
ii. Operators to have in-date Third Party certificate by approved body,
available for review on arrival to site;
iii. Rig load indicator to be installed and functioning correctly;
iv. Visual inspection of rig undertaken by competent person;
Documentation
unavailable for
review
Rig quarantined until evidence
provided
Low
2
Access of rig and sheet
pile delivery vehicles to
work areas
 Plant and workers in
same working area;
 Collision with plant or vehicles and
live traffic;
 Workers struck by plant, very high
risk of fatality;
 Uncontrolled rig movements;
i. Worker pedestrian routes to be designed and implemented with clear
signage to provide segregation;
ii. Instruction to workers at induction on access routes around the project;
iii. Flagmen to be used to control rig movements;
iv. The Logistics plan shall clearly illustrate rig access and egress points;
Workers not
complying with
flagmen
Regular topic in TBT’s Low
3 Siting and setting up of
sheet piling rig
 Working in proximity
to existing structures
and services;
 Underground
services;
 Collision with overhead services;
 Damaging underground services
with weight of rig;
 Blocking access routes;
 Rig striking moving and/or stationary
structures;
3 4
12
High
i. Ensure sheet piling rig is set up correctly, is on firm level ground as per rig
plan;
ii. Underground services such as buried electrical cable trays determined
and clearly communicated;
iii. Solid barriers should be situated, where practicable, to protect rig from
traffic routes around working radius of cab;
iv. Consideration given to overhead services and existing structures when
siting rig;
Low
4
Sheet piling operation
(Mobile rig Operator)
 Operator competency;
 Lift planning;
 Underground
services;
 Incident due to use of defective
sheet piling gear / lifting equipment;
 Rig collapse due to lifting loads
beyond SWL;
 No rig documentation in place;
 Rig workers struck by equipment;
4 5
20
HIGH
i. Sheet piling permit to be completed prior to any works taking place by
sheet piling supervisor and engineer;
ii. Any underground services to be directly communicated to rig operator;
iii. Daily checks by piling rig operator;
iv. Ensure all sheet piling lifting tackle and equipment have valid test
certificate before use (6 monthly 3rd
party inspections);
v. Method statements and risk assessments to be submitted and adhered to;
vi. Rig load indicator to be functioning correctly, and not to be overridden
under any circumstances;
vii. Operator to adhere to rig safe working load limits;
viii. Operator to ensure workers are clear from rotating parts;
Machine
breakdown
Hydraulic fluid spill
Machine isolated and
quarantined until repaired.
Spoil removed and treated as
hazardous waste
Low
Project Name: xxx
RA Ref No.: xxx
RA compilation
Date:
Review date:
Date:
Compiled by:
Reviewed by:
Approved by:
Overall Task Details
Sheet piling operations using mobile rig within site boundary.
To be read, if required, which RA010 – Excavations. Classed as Temporary Works
Relevant Applicable MAS:
 01412 – Lifting Operations;
 00941 – Lifting equipment
Additional Training required:
Noise monitoring;
Temporary Works Coordinator
NOC’s Required for task:
Underground utility provider
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 Sheet Piling Operations (Temporary Works)
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
P S RR
5 Sheet piling operation
 Use of Sheet piling
Rigs;
 Persons underneath load struck by
materials;
 Sheet pile swinging / spinning
uncontrolled;
 Incorrect slinging of sheets;
 Falling materials;
 Damage to slings from sharp edges;
 Over-sailing of sheet piling material
over live traffic routes;
 Hearing damage;
 Noise pollution to local residents;
 Proximity of live traffic routes;
 Damage to structure due to vibration
from operation;
 Striking underground services
causing injury/damage/isolation;
 Noise in urban areas;
 Environmental issues;
 Refilling of equipment;
 Storage of flammable substances;
 Use of generators;
4 5
20
High
i. All sheet piling operations shall be planned with positioning schemes and
method statements submitted and reviewed at least 5 days prior to work
commencing;
ii. Municipality working restrictions, specific requirements and NOC’s to be
adhered to;
iii. All sheet piling operations to have suitable barriers, fencing, hoarding
and signage implemented to protect workers and the general public;
iv. All known utilities drawings and plans regarding underground services to
be investigated and marked prior to works commencing;
v. Equipment to not have any guards removed during works, safe working
distances to be maintained by workers;
vi. Lifting of sheet piles to be controlled by designated trained rigger/banks
man using approved hand signals only;
vii. No personnel situated or walking under elevated sheets, avoid over-
sailing of personnel if practicable;
viii. No over-sailing of sheet piles over live traffic routes without road
closure;
ix. All sheet piling operations to comply with any Municipality imposed
working restriction hours and noise levels;
x. All sheet piling spoil to be removed from site following Municipality
requirements, exit roads shall be maintained free of spoil;
xi. In the event of maintenance - ground shall be suitably protected from
oil/grease/chemical spillage and protection removed as hazardous
waste;
xii. Refuelling of equipment to be in designated areas, using correct filling
trucks/bowsers.
xiii. All fuel/combustive materials/chemicals shall be stored in approved
storage areas;
xiv. If single skin tanks are used then a sealed bund 110% capacity of the
tank shall be installed;
xv. All sheet piling staff shall wear hearing protection;
Incident – falling
materials
Work in high
winds;
Striking
unidentified
underground
services;
Work stopped, area cleared
and full investigation
undertaken
Cancel work operations in
winds exceeded 40km/h;
In the event of striking
unidentified services all work
to cease and emergency
services contacted as
required;
Low