trench excavation procedure


Excavation Safety Standard Operating Procedures Summary Excavation Safety – Original – March 15, 2017 LUSafety@liberty.edu 434-582-3389 Procedures for Excavation. Excavation—Any man-made cut, cavity, trench, or depression in an earth surface, formed by earth removal. In the event of a collapse, the worker on top may have some idea where the trapped worker could be located. Water hazards associated with excavation or trench are evaluated and controlled. Our Excavation Fall Arrest and Rescue System provides 360° fall protection and rescue capability for construction operatives working within excavations In the event of a collapse the following procedure should be adopted. Ensure the excavation or trench is kept reasonably free of water. The aim was to find a construction procedure with an immediate ring closure. When a trench excavation is being planned for any purpose, a thorough search should be made for information about any existing utilities adjacent to or crossing the line of the planned trench, including their sizes, locations and alignments. This can include excavations for anything, from cellars to … If the emergency is . Moisture content of the soil begins to change almost immediately and the strength of the walls may be affected. Employees protected from falling loads while in the excavation or trench. In general, the depth of a trench is greater than its width, and the width (measured at the bottom) is not greater than 15 ft (4.6 m). Note: This procedure does not cover the risks associated with tunnelling and shafts. 14. Trench open for extended duration may collapse without apparent reason. Excavation and trenching are among the most hazardous construction operations. An Excavation is any man-made cut, cavity, trench, or depression in an earth surface that is formed by earth removal. Note: An excavation greater than or equal to 4 feet in depth with limited means of entry and exit is considered a confined space by BP Group Standards. Utility/Rescue Shores incorporate an innovative design that greatly increases your ability to quickly install shoring an ultimately save lives. On the other side, the trench excavation is also an open excavation type, but the depth eclipses the width of excavation. Excavation and trenching video developed in 2005 under an OSHA Harwood Grant. A trench is a long narrow excavation which is deeper than it is wide, and open to the surface along its length. Ensure that excavated material is kept at least 1.2 m away from the edge of an excavation or trench. An excavation is a hole left in the ground as the result of removing material. Each excavation or trench that has a potential for cave-in or is above 5’ must be sloped or shored accordingly. A competent person who fully understands the dangers and necessary precautions should inspect the excavation at the start of each shift. ... pipeline replacement method is the conventional open-cut excavation method for construction of a new main in a new trench, usually parallel to the old main. Once a trench is dug, the sides of the open excavation are exposed to the air. Why it is required Excavation HSEQ Operational Procedure What this procedure describes How to pole bore, trench and work near essential services and TasNetworks assets. OSHA defines an excavation as any man-made cut, cavity, trench, or depression in the earth’s surface formed by earth removal. In particular are the correct pins provided in the trench struts? 15. 214 Working in Excavations - Trenches and Shafts Purpose To detail the requirements for persons carrying out excavation works including: the excavation of trenches and shafts. Chief Executive Officer Chairperson, WHS Committee Date: 3 / 9 / 2014 Date: 3 / 9 / 2014 This Procedure relates to excavation work if the work includes a trench, tunnel or shaft. It does not apply to the following: (a) A mine; or (b) A well; or (c) A trench for use as a place of interment Any excavation and trenching activities that involve hazards and risks to workers and others are subject to the Hazard Management Procedure. Trench boxes or trench shields are intended to protect workers from cave-ins and similar incidents. Thousands of new, high-quality pictures added every day. Only trench shields designed or certified by a registered professional engineer may be used. The trench shield is lowered into the excavation and workers may then enter the protected area within the shield. ... For hard soils when the depth of excavation is less than 1.5 m, the sides of the trench do not need any external support. The USPL Excavation … Trenching and excavation work is inherently dangerous. Saskatchewan Labour defines a temporary protective structure as “a structure or device in an excavation, trench, tunnel or excavated shaft that is designed to provide protection from cave-ins, collapse, sliding or rolling materials, and includes shoring, trench boxes, trench shields and similar structures.” Most of the underground utilities are live systems, such as electricity, water, sewer and gas, and can If required, use temporary intermediate waling and strutting. STANDARD OPERATING PROCEDURE/GUIDELINE SPECIAL RESCUE OPERATIONS – 3.5.3.6 TRENCH AND EXCAVATION COLLAPSE DATE APPROVED PAGE 2 of 5 2 SOP Center. Trench: A narrow excavation in relation to its length made below the surface of the ground. ... Approved shoring methods include pre-cast panels, trench shields, soldier sets and sandbags. 11. 10. This procedure relates to excavation work if the work includes a trench, tunnel or shaft. Inspection. Excavation: A man-made cut, cavity, trench or depression in an earth surface, formed by Trench Pro exclusive Trench Rescue Shores offer maximum utility and safety Trench Pro also offers a new tool for fast trench rescues. The longer an excavation is open to the air, the greater the risk of a cave-in. Ch 44 - ES Rules - Trench & Excavation Procedures - Revised September 2009 H:/Public/Admin Share/GWP Safety Policies & Rules - 2009 C. BEWARE OF DISTURBED GROUND 1. Excavation Work Method Statement Procedure. Take precautions when excavating in previously backfilled or disturbed soil. Excavation: For the purpose of emergency response, an excavation shall be defined by any depression, hole, trench or earth wall, man-made or natural, of four feet or greater. 2. Find trench excavation stock images in HD and millions of other royalty-free stock photos, illustrations and vectors in the Shutterstock collection. Carefully plan any installation procedure as workers must be protected from becoming trapped or engulfed by a cave-in. Both benching and battering of walls are also methods of work which minimize the risk of rock and/or soil slipping into the excavation. Relatively large volume of earth is involved. SAFE WORKPLACE PROCEDURE No. Definitions o Trench – opening whose length is greater than … Excavation procedure for foundation construction requires site clearance, setting out, excavation and safety measures based on depth of excavation. Excavation Safety Procedure Document Ref No: CSP/EXS/002 Rev 01 Date of Issue: 01/ 01/ 2016 Excavation- Any man-made cut, cavity, trench or depression in earth surface formed by earth removal. A warning system provided when mobile equipment nears the edge of the excavation or trench. A stairway, ladder, or other safe means of egress shall be located in an excavation or trench that is 4 feet (1.22m) or more in depth so as to require no more than 25 feet (7.62m) of lateral travel for employees. This shall be adhered to at all times. EXCAVATION / TRENCH RESCUE PROCEDURES: While a person is in a trench, there SHALL be at least one other person at ground level. Ensure employees do not enter the excavation or trench to install or remove the shoring or caging. fabricated guard rail assemblies that connect to the sides of the trench box; the support system itself, eg using trench box extensions or trench sheets longer than the trench depth. A trench is an excavation in which the depth exceeds the width. Excavation procedure for foundation construction requires site clearance, setting out, excavation and safety measures based on depth of excavation. Site Clearance before Excavation for Foundation Before the excavation for the proposed foundation is commenced, the site shall be cleared of vegetation, brushwood, stumps of trees etc. Safe Procedures and Preventive Measures: Layout of trench: Dust: Use Proper PPE with Nose Mask Layout of trench: Slip & Trip: Before starting the job ensure proper House keeping. Tool box meeting to be held for safe working procedure: Manual Excavation: Eye injury due to dust and flying particle. A Trench is a narrow excavation (in relation to its length) made below the surface of the ground. Chapter 11 | Excavation Procedures – Groundwater monitoring wells, including geotechnical wells, ... Do not attempt to enter an unprotected or failed trench to perform a rescue – call professional responders. A trench is defined as a narrow underground excavation that is deeper than it is wide, and is no wider than 15 feet (4.5 meters). An excavation is any man-made cut, cavity, trench or depression in the earth’s surface formed by earth removal. When a ladder is utilized it must be secured and extended 3 feet above the edge of the excavation or trench. Trenches in disturbed soil may require additional sheeting and bracing. Have all support materials been checked before installation in the excavation? non-life-threatening, contact the supervisor and PM and . Generally have relatively equal dimensions of width and length. WHS policy or procedure relating to excavation work • Assist in developing SWMS for excavation work from the planning stages and comply with them • Never work alone in medium or highrisk excavations and wear - personal protective equipment (PPE) and maintain them as per instructions • Never work in a trench outside the supported section Depth will vary but usually is Have all personnel been instructed in the evacuation procedure for the excavation, and the correct rescue procedure to follow, if someone is overcome by toxic or asphyxiating gases. Hazardous atmospheres evaluated prior to entry and during work based on containment(s) present. In general, the depth is greater than the width, but the width is not greater than 15 feet. Excavations greater than 5 feet in depth must be fully evaluated by a competent person so that appropriate protective measures are followed. Hazards include cave-ins, struck-by injuries, electrical contact, and slips, trips, and falls. 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