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'= 7__ 5.3 Clearing the work Area Prior to drilling, adequate site cleaning and leveling should be performed, to the degree feasible, to accommodate the drill rig and supplies and provide a safe working area. Drilling should not be commenced when tree limbs, unstable ground or site obstructions result in unsafe too'-handling conditions. 5.4 Housekeeping On and Around the Drill Riq To complete the first requirement for safe field operations, the safety supervisor of the drilling crew must understand and fulfill his responsibility for maintenance and "housekeeping" on and around the drill rig. Suitable storage locations must be provided for all tools, materials, and supplies. The locations must allow for the convenient handling of tools, materials or supplies without danger that these could fall on or hit a member of the drill crew, visitor, site inspector, and so forth. Avoid storing or transporting tools, materials, or supplies within or on the mast (derrick) of the drill rig. Pipes, drill rods, bits, casing, augers, and similar drilling tools should be stacked in an orderly manner on racks or sills to prevent spreading, rolling, or sliding. Penetration hammers or other types of driving hammers should be placed at a safe location on the ground or secured to prevent movement when not in use. Work areas, platforms, walkways, scaffolding, and other access ways should be kept free of materials, obstructions, and substances such as ice, grease, or oil that could cause a surface to become slick or otherwise hazardous. Keep all controls, control linkages, and warning and operation lights and lenses free of oil, grease, and/or ice. Do not store gasoline in any portable container other than a non-sparking, red container with a flame arrestor in the fill spout. The word "gasoline" must be clearly visible on the container. 5.5 Use of Hand Tools There are many kinds of hand tools that can be used on or around a drill rig. The most important rule is "use the tool for its intended purpose". The following are a few specific and general suggestions that apply to the safe use of several hand tools often used on and around drill rigs. - When a tool becomes damaged, either repair it before using it again or discard it; Project No. 1232 -6- F,NV1ROYN0IENTAL AUDITIATC.