Site triio Activity Excavation Persons conducting assessment SHEQ DEPT Assessment No. triio 03 Review Date January 2019 Revision No. 5 Name Ian Buchanan Signature Date January 2017 Person Supervising Work Site Supervisor Employer triio Name John Downes Signature Date January 2017 Persons Exposed Employees X Other Workers X Public/Visitors X Vulnerable Persons X Total at 5 5 10 15 20 25 4 4 8 12 16 20 3 3 6 9 12 15 2 2 4 6 8 10 1 1 2 3 4 5 1 2 3 4 5 Rating 1 = Very unlikely Rating 2 = Unlikely Rating 3 = Likely Rating 4 = Very likely Rating 5 = Almost certain Rating 1 = No injury Rating 2 = Minor injury or illness Rating 3 = 3 day injury or illness Rating 4 = Major injury or illness Rating 5 = Fatality, disabling injury, etc = x Acceptable Further review Unacceptable Page 1 of 6
HAZARD Excavation Work / Work In And Around Excavations Underground Utilities Electricity/Gas Water/Sewerage Telecom/Cable TV Traffic Light / Bollard Streetlight Petroleum / 3 rd Party Collapse Of Excavation Collapse Of Adjacent Structure Ingress Of Groundwater Ingress Of Surface Water Ingress Of Fumes Contaminated Ground Microbiological Surcharging From Plant Or Materials Falls Into Excavation Objects Falling Into Excavation Use Of and Condition of Mechanical Excavation Equipment Reliance On / Misinterpretation Of Cable Drawings Untrained Operation Of CAT & Genny Un calibrated CAT & Genny Slips, Trips And Falls Adverse Weather Conditions Deliberate disregards for Unsafe practices Utilities in concrete/roots etc Page 2 of 6 1 2 3 4 5 6 7 8 9 Residual risk columns 5 6 Factors of Harm Factors of Harm CONTROL MEASURES columns 1 2 3 4 12 Vacuum Excavator and/or Air Lance must be the preferred meth of excavation at all times. All Work To Be Undertaken In Accordance With The Main & Service Laying Manuals Excavation work to comply with the requirements of HSG47 triio Induction Required SHEA (Gas) Passport Training Required 1 NRSWA Operative qualified person per team Teams shall be first aid trained STC s To Be Maintained And Reviewed Annually All Employees & Subcontractors Must have attained a competency level of at least NCO trainee before conducting excavation works. Sufficient Employees or Subcontractors Per zone To Be Trained In CITB Safe Support To Excavations Sufficient Employees or Subcontractors per zone to be Confined Space Trained to CP1 & CP2 level Mechanical Excavation Equipment may only be operated by personnel in possession of a CITB CPCS or NPORS card. Steel toe capped boots, gloves, hi-visibility vest, safety specs and flame retardant overalls to be worn at all times. Service Avoidance Permit/Safe to Proceed form to be in place prior to any excavation being undertaken All plant must be in go service and inspected daily with records kept weekly. Head Protection, High Visibility Clothing, Steel Toe Capped Boots, FR Clothing/Overalls, Hand Protection & Safety Specs To Be Worn At All Times Site Specific Assessment must be undertaken prior to the commencement of any work activity and reviewed daily or upon change to working environment / working conditions. Daily H & S briefing records to be completed and briefed to teams prior to daily start work. Gas, Water, Sewer, BT and Electric Plans Must Be Available As A Minimum A Line search and Grey Area check must be carried out to determine the presence of Major Accident Hazardous Pipelines (MAHP) prior to excavation commencing. 1 4 4 Monitoring
Hazard Excavation Work / Work In And Around Excavations Underground Utilities Electricity/Gas Water/Sewerage Telecom/Cable TV Traffic Light / Bollard Streetlight Petroleum / 3 rd Party Collapse Of Excavation Collapse Of Adjacent Structure Ingress Of Groundwater Ingress Of Surface Water Ingress Of Fumes Contaminated Ground Microbiological Surcharging From Plant Or Materials Falls Into Excavation Objects Falling Into Excavation Use Of and Condition of Mechanical Excavation Equipment Reliance On / Misinterpretation Of Cable Drawings Untrained Operation Of CAT & Genny Un calibrated CAT & Genny Slips, Trips And Falls Adverse Weather Conditions Deliberate disregards for Unsafe practices Utilities in concrete/roots rootsetc. columns 1 2 3 4 12 Where excavation is to take place within 3m of any Pipeline, approval to proceed from the pipeline owner must be obtained prior to excavation commencing Underground Utility Drawings Are Often Incorrect And Must Not Be Relied Upon A Visual Check Must Be Undertaken To Look For Visual Indications Of Services CAT & Genny Must Be Calibrated Every 12 Months CAT & Genny Must Be Used Prior To And During Excavation every 300mm depth as a minimum. All traces shall be marked up with Non-permanent spray paint Encroachment lines must be marked 0.5m outside the area to be excavated near traces to show where hand digging must be undertaken A Service Avoidance Permit/Safe to Proceed form must be completed and signed off by Team Leader and Supervisor prior to excavation work commencing Existing Services Shall Be Exposed Using hand dug Trial Holes Prior To Mechanical Excavation. Unidentified cables/services must be reported to Line Manager for further investigation. Pneumatic Breakers Or Other Power Tools Shall Be Used To Remove The Road Surface Only Mechanical Excavators Shall Not Be Used Within 0.5m Of A Buried Service Utilities Shall Not Be Used As A Foothold Measures Residual risk columns 5 6 All Utilities Shall Be Treated As Live Where excavation is required within the vicinity of overhead lines the electricity supplier should be contacted to identify the minimum safe working distance from the overhead line (in accordance with GS6. Suitable and sufficient welfare provision must be available, including Drinking Water, Hot and Cold Water, Soap, Towel and Resting Facilities All excavations shall be assessed for support requirements regardless of depth. Protection Shall Be Given To Tree and plant Roots During Excavation All Excavations Deeper Than 1.2m Must Be Supported and a Permit to Work issued. 1 4 4 Monitoring Page 3 of 6
Ejecting debris. When breaking ground with a mini-excavator pecker where a windscreen is not fitted, operators are to ensure that there is sufficient distance between the driver and the activity to ensure they are not at risk of ejecting debris. Suitable exclusion zones for MOPs must also be in place Hazard Excavation Work / Work In And Around Excavations Underground Utilities Electricity/Gas Water/Sewerage Telecom/Cable TV Traffic Light / Bollard Streetlight Petroleum / 3 rd Party Collapse Of Excavation Collapse Of Adjacent Structure Ingress Of Groundwater Ingress Of Surface Water Ingress Of Fumes Contaminated Ground Microbiological Surcharging From Plant Or Materials Falls Into Excavation Objects Falling Into Excavation Use Of and Condition of Mechanical Excavation Equipment Reliance On / Misinterpretation Of Cable Drawings Untrained Operation Of CAT & Genny Un calibrated CAT & Genny Slips, Trips And Falls Adverse Weather Conditions Deliberate disregards for Unsafe practices Page 4 of 6 columns 1 2 3 4 12 Plant / Material Must Be A Minimum Of 1m From The Edge Of The Excavation. This Distance Will Be Increased To The Depth Of The Excavation For Excavations Deeper Than 1m (I.E. Excavation 1.5m Deep - Spoil 1.5m From Edge) All Excavations Deeper Than 1.2m Must Have Suitable Edge Protection And Guarding With Heras Fencing Access Into Deep Excavations Shall Be Via A Tied & Secured Ladder Where Necessary Gasco seekers Shall Be Used Within Deep Excavations Excavations Shall Be Guarded At All Times (NRSWA) and SLG Matrix in job pack. Do Not Break Away Bricks Or Concrete. Cables in concrete must be made dead or an alternative route for the excavation shall be found. Process for Services Encased in Concrete must be followed. Always Keep Plant Well Away From The Edges Of The Excavation To avoid surcharging the sides of the excavation Switch Vehicles Engines Off Or Park To Prevent Ingress Of Exhaust Fumes Stop blocks to be placed 1metre from the edge excavations where close approach by plant and vehicles is likely. Surface Water Shall Be Channelled Away From Excavations Using Sandbags Where Necessary Water Pumps Shall Be Supplied To Remove Water From Excavations Water removed from excavations shall be pumped to a settlement tank, tanker or grass verge where necessary Ensure That Excavations Are Reinstated As Soon As Possible All Work Shall Be Stopped In The Event Of Measures Residual risk columns 5 6 1 4 4 Monitoring
Utilities in concrete/roots etcetc. Contaminated Land Being Discovered - Patches Of Black Materials, Blue Or Yellow Powder, Unusual Smells Especially Rotten Eggs High impact Eye Protection Shall Be Worn When Operating Breaker. Protection Shall Be Given To Tree and plant Roots During Excavation Hazard Manual Handling columns 1 2 3 3 9 Task Based Manual Handling Assessments should be referred to as required Manual Handling Training To Be Regularly Refreshed (3Yrs) Manual Handling To Be Avoided, Where Practicable, At All Times Through Use Of Lifting Equipment Etc. A T.I.L.E based risk assessment must be undertaken prior to carrying out any lifting activity Correct Manual Handling Techniques To Be Used At All Times Where Necessary Lift Heavy Items In Pairs I.E. Electro Fusion Box Steel Toe Capped Boots And Gloves To Be Worn Measures Residual risk columns 5 6 1 3 3 Monitoring Traffic / Pedestrian Movements Lack Of Guarding Lack Of Pedestrian Access Storage Of Plant / Spoil Parking - Access & Egress Untrained Operation 3 4 12 One Member Per team To Be Trained In NRSWA For Operatives Site To Be Signed, Guarded And Lit In Accordance With NRSWA and SLG Matrix in job pack. Spoil, Material And Equipment To Be Guarded At All Times Pedestrian Routes To Be Protected And Signed At All Times Vehicles To Be Protected In Accordance With NRSWA (Regardless Of Position Of Excavation) Vehicles fitted with reversing cameras 1 4 4 Monitoring Hierarchy of Reduction a) Elimination b) Substitution c) Engineering s Page 5 of 6
d) Signage / Warnings and / or Administrative s e) PPE Page 6 of 6