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HS-SWMS- 003
PO Box 3226 Logan City DC, Qld, 4114
ABN: 21 - 627 - 796 435
Note: Revision is required no later than 12 months from the most recent revision date
Safe Work Method Statement: Trenching and Excavation
General Work Location:
Note: Specific work location to be detailed on JSEA
Logan City
REV DATE DESCRIPTION Developed Checked Approved 2.0 11/07/2017 New Document (^) Name: D.Ludlam S.Faber M.Goldsworthy
Name:
Name:
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Applicable OHS Legislation Minimum Licence/Competency requirements for Task Applicable Hazard Control Standards for Task
The following directives, procedures, codes of practice and Australian standards were reviewed in the development of this SWMS
Work Health & Safety Act, Qld 2011 Construction White Card / Blue Card Electrical Safety (Code of Practice), Qld 2013
Work Health & Safety Regulations, Qld 2011 Traffic Management Design (TMD) Accreditation, where applicable Excavation Work (Code of Practice), Qld 2013
SWNELP (Safe Working Near Exposed Live Parts), where applicable Trenching and Excavation Procedure (HS-PRO-003), Logan City Council
Electrical Safety Act, Qld 2002 Excavation & Trenching Training (RTO) How to Manage Work, Health & Safety Risks (Code of Practice), Qld 2011
Electrical Safety Regulations, Qld 2013 Mobile plant operators must hold the relevant licence and verification of competency (VOC)
Managing Electrical Risks in the Workplace (Code of Practice), Qld 2013
Environmental Protection Act, Qld 1994 Energex Authorised Person, where applicable Managing the Risk of Falls at Workplaces (Code of Practice), Qld 2011
Environmental Protection Regulation, Qld 2008 Manual of Uniform Traffic Control Devices (MUTCD), Department Transport and Main Roads, Qld
Transport Operations (Road Use Management) Act, Qld 1995
Construction and High Risk Work Directive (HS-DIR-002), Logan City Council
Traffic Management for Construction or Maintenance Work (Code of Practice), Qld 2008 Working Near Overhead and Underground Electric Lines (Code of Practice), Qld 2010
Preceding Works & Requirements
This section is to be used to specify any processes and/or standard requirements prior to conducting the activity and does not need to be repeated in the main body of the SWMS
All persons must report Fit for Work e.g. - Not affected by Drugs (includes prescription medication), Alcohol or Fatigue
A JSEA addressing the task and worksite hazards must be completed and signed by all personnel before work commences
Worksite traffic risks must be identified, assessed and controlled via JSEA or equivalent traffic guidance scheme
Emergency Plan – Detailed in JSEA, LCC Trenching and Excavation Permit (HS-FRM-003), and/or other applicable permits (Hot Work, Confined Space etc.)
A pre-start inspection must be completed on all items of mobile plant prior to first use each shift (log book) – All plant / equipment must be fit for purpose prior to use
Standard PPE to be worn for all steps included in this SWMS. This includes; hard hat / safety footwear / hi-vis long sleeve clothing (reflective for night works) / long pants / safety glasses / task suitable gloves
The following specialised equipment / emergency provisions must be readily accessible at the worksite prior to commencement:
- Dry chemical fire extinguisher (if applicable) •^ Atmospheric monitoring device, tested and within calibration (if applicable). - Barricades & signage.
- Communication devices (Tablet, Phone, Radio etc.). - First aid kit and minimum 1 trained first aider per 25 workers at the worksite. - Face Shield (Hydrovac Excavations).
Monitoring and Review of Risk Controls
- Pre-start meeting conducted with work crew prior to commencement of each shift. - JSEA prepared prior to commencement of task. JSEA reviewed daily by work crew and immediately following any change impacting HSE. - Communication of relevant Safety Alerts from industry/LCC.
- Regular WHS Inspections & Safety Conversations conducted by Line Management. - Incident Reports (Intelex). - SWMS reviewed on a minimum annual basis or following any material change to the task or risks.
- Revision of SWMS upon change of legislation, codes of practice, guidelines & standards. - Hazard identification processes including Hazard reports and audits. •^ Personal Take 5 Assessments.
Preparation
Vacuum Operations/Non- Destructive Digging
Uneven ground Hoses and equipment
Traffic and pedestrian interaction
Muscle Strains/Sprains
Slips/Trips/Falls
- Demarcate safe area around work site (witches hats and signage etc.).
- Layout equipment and hoses to be used and eliminate trip hazards where possible.
- Position truck as close as is safe to the work area.
- Remove all trip hazards from the work area (where practical).
- Manual handling training provided.
40 5 45
Supervisor, Ganger, Team Leader, All Workers
Vacuum/Hand Excavating
Stored Energy:
Splash back in rocky soil
High pressure suction line:
- Kick back,
- Negative pressure
Manual Handling
Excavation / hole:
- Saturated soil,
- Unstable ground
Physical Injury
Strains/Sprains
Slips/Trips/Falls
Property Damage
- Face shield to be used during vacuum excavation.
- Nozzle is to be nonconductive (neoprene rubber or equivalent) vacuum (suction) hose.
- Continually adjust lance angle to avoid excessive splash back.
- Never aim lance at another person or yourself.
- Always point nozzle at the ground prior to activating.
- Never use high pressure lance to wash down persons.
- Confirm pressure settings to avoid damage to coating of pipes and other services. Allow the water pressure to dig the hole – DO NOT apply excessive force to push spear into ground.
- Keep body clear of vacuum hose – DO NOT place hand over end to clear blockages.
- Turn off suction before attempting to clear blockages.
- Engage correct manual handling techniques when moving equipment.
- Position body to allow for unexpected movement.
- Stand on level ground where possible and remove any obstacles that could create trip hazards. Maintain good housekeeping standards.
- Monitor edge of excavation – water may have changed ground integrity / stability, watch for surface cracking around edges of hole.
40 5 45
Supervisor, Ganger, Team Leader, All Workers
Operate
Excavate
Powerlines
Plant collisions
Plant & Equipment falling into excavation/trench
Personnel struck by plant
Exposure to excessive noise
Physical Injury
Fatality
Property Damage
Hearing impairment / Loss of hearing
- Energex authorised person to monitor overhead power exclusion zones.
- Plant operator to maintain awareness of exclusion zones and breaches.
- Flat edged buckets to be used on excavators where underground services are present.
- Powered mobile plant shall not operate near the edge of an excavation unless the ground support system installed has been designed by a competent person.
- Ground conditions to be assessed and monitored – work to immediately cease where there is an immediate risk of injury or plant damage.
- Reversing alarms/beacons activated on plant at all times.
- Operators of mobile plant shall wear seatbelts at all times (where fitted).
- High visibility (PPE) to be worn by all workers (reflective for night works).
- Minimum of one (1) metre exclusion zone from mobile plant.
- When persons other than the work crew immediately involved in the task require entry into the exclusion zone of Powered Mobile Plant, the Plant Operator is to acknowledge the entry and ensure all powered operable items are positioned safely (Implement grounded and Plant isolated) prior to the persons approaching the Plant.
40 5 45
Supervisor, Ganger, Team Leader, All Workers
- Personnel to wear hearing protection at all times while working within a 10m radius of high-noise plant and equipment.
- Other high noise tasks to be identified and controlled via the JSEA process.
Operate
Working in/near Trench/Excavation
Engulfment
Falls Trench collapse
Water inrush
Inadequate Access/egress
Unsafe atmosphere/s
Physical Injury
Fatality
- Strictly no entry into any excavation greater than 1.5m deep unless one or more of the following controls are implemented: o Benching (Must not exceed 1.5 Metres). o Shoring; (Must extend 300mm above trench). o Battering (Must be less than 45 Degrees).
- Safe means of access/egress provided into all excavations (Ladders 4:1 ratio where practical), Ladders to rise 1 metre above trench.
- Ladders shall be used for accessing excavations deeper than 1.5 metres.
- Ladders used for access must be no more than nine (9) metres apart.
- Ladders are to be secured against displacement.
- Maintain three (3) points of contact when ascending/descending ladders.
- Identify hazards that may create an unsafe atmosphere within the excavation (e.g. exhaust emitting plant, hazardous substances, welding, cutting etc.) – If such hazards exist, confined space entry controls apply (including completion of Confined Space Entry Permit).
- Pumps or other dewatering systems to remove water and prevent build-up (if applicable).
- Continually assess ground conditions and stability – ensure mandatory JSEA review following any changes (e.g. rainfall) and cease work if hazards exist.
- Ensure all stockpiles / spoil is kept a safe distance away from the excavation and that it does not affect the safe working height of the excavation (1.5 metres).
- Pre-start check/continuous monitoring of atmospheric conditions (applicable if deemed a confined space).
- Signage (deep excavation etc.).
40 5 45
Supervisor, Ganger, Team Leader, All Workers
Pack up / Leave site Unauthorised use of plant and equipment
Poor housekeeping
Open excavations
Physical Injury
Environmental Harm
- Ensure all plant and equipment are secured at the end of each day.
- Ensure blades are on the ground prior to switching off plant.
- Open excavations shall be protected prior to leaving site with one or a combination of the following methods – Backfill, Barricading (at least 900mm high), Signage, Penetration Covers, Warning Flags etc. Note: Barriers must be suitably robust for excavations located in an area readily accessible by unauthorised people.
- All waste to be removed from site and disposed of correctly.
- All persons to be accounted for before leaving site.
40 5 45
Supervisor, Ganger, Team Leader, All Workers
