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Safe Working Procedure - Excavations

Safe Working Procedure - Excavations . Learning Objectives: By the end of this program participants will be able to demonstrate their understanding of the control measures to be followed , as detailed in the safe working procedure, when working in and around excavations.

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Safe Working Procedure - Excavations

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  1. Safe Working Procedure - Excavations Learning Objectives: By the end of this program participants will be able to demonstrate their understanding of the control measures to be followed , as detailed in the safe working procedure, when working in and around excavations. To begin we will consider the OAC model for managing safety

  2. Safe Working Procedure - Excavations

  3. Safe Working Procedure - Excavations Set your work objectives to include; “...tasks/ activities are to be completed on time and in a manner that does not cause harm to the employees, customers, other non-employees, or the company/ organisation.” • Three key questions to start with are… • What can cause harm? • What are you doing about it? • Is it enough? Remember the process is simple but it is NOT to be considered simplistic.

  4. Safe Working Procedure - Excavations The OAC e-learning package can be accessed free at www.confinedspaces.com; Click here to open the "Work Safety - Manage Safely" e-learning program. (Work Safety - Manage Safely) also A 5 Minute Safety Seminar (PowerPoint) is available from www.web-safety.com; Click here to link to Safety Exchange - Then open the 5 minute Safety Seminar.

  5. Safe Working Procedure - Excavations Know where the harm is; Identify the key hazards associated with excavations and the outcomes of an excavation safety failure. • Source of Hazards(non-exhaustive list) • Access • Air quality • Collapse of sides or roof • Plant & equipment • Soil contaminants • Underground services • Weather conditions • Outcomes of exposure(non-exhaustive list) • Asphyxiation • Crushing • Electrocution • Explosion • Trips and falls

  6. Safe Working Procedure - Excavations • Controlling the Hazard - Options • In priority order; • Eliminate where possible, • Use control measures, • Protect all those exposed to the hazard Insert eliminate image Insert control image Insert protective Clothing image

  7. Safe Working Procedure - Excavations • Systems and Equipment • Proper design, construction and maintenance. • Employ competent staff. • Maintain competence. • Inspections and tests. • Pre-use visual checks. REMEMBER to:Locate and mark any underground services in the vicinity of the excavation before the excavation work starts.

  8. Safe Working Procedure - Excavations • Excavation Stability • Qualified and competent person to establish need for excavation supports before any excavation starts. • Consider the effects of the excavation on any nearby structures. • Excavation/ structure supports to be available before excavation starts. • Batter back the sides and ends of the excavation to a safe angle, • Qualified and competent people to install, alter and dismantle excavation support systems. • Use guards barriers and/ or stop blocks. • Store excavated material, plant, vehicles etc. away from the excavation. Insert excavation Support image

  9. Safe Working Procedure - Excavations • Caissons and Cofferdams are to be… • Designed, • Constructed , • Maintained , • Altered, or • Dismantled by • suitably qualified and competent people. Insert cofferdam image

  10. Safe Working Procedure - Excavations • Other Excavation safety considerations • Provide a suitable means of access to the excavation. • Qualified and competent persons to inspect excavations, caissons or cofferdams; • A)At the start of each shift before anyone commences work, • After any event, including weather, likely to have had an effecton the strength or stability of the excavation, • After any accidental fall of rock, earth or other material. • Keep a record of every inspection.

  11. Safe Working Procedure - Excavations • Air quality in Excavations • Provide a sufficient supply of fresh or purified air. • Prevent the ingress of hazardous fumes from engine exhausts or other sources. • Determine the likely effects of soil contaminants. • Monitor the air quality, as necessary.  • Provided an alternate breathable air source if the atmosphere in the excavation is found to be outside the breathable limits. REMEMBER:Confined Spaces procedures will apply where an actual or potential IDLH 1 atmosphere exists 1 IDLH = Immediately dangerous or hazardous to health

  12. Safe Working Procedure - Excavations Duty Holders Responsible for… Managing Director Ensuring compliance. Safety Managers Providing professional safety advice. Business Activity Managers Complying with the requirements. Employees Co-operating with the requirements.

  13. Safe Working Procedure - Excavations • Documentation • Inspection logs, such as… • Excavations, • Cofferdams, and • Caissons.

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