How close can my flags and Stantions be from the leading edge in MAwhile preforming telecommunication construction

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## R. WORKING AROUND UNDER GROUND UTILITY LINES During operation it is likely that you will be working around or near buried utility lines which may include, but are not limited to: - -Electrical Power Line - -Gas Line - -Water Line - -Communication Line: Telephone or Cable Television Before begining any trenching, drilling or other construction work it is your responsibility to be aware of all such utility lines buried in the area of your project and to avoid them. ALWAYS have all local utility companies mark the location of their lines. Check with local authorities for laws, regulations and/or strict penalties requiring you to locate and avoid existing utilities. ## S. RESTRICTED WORK AREAS In work sites with limited height and swing / traveling areas such as tunnels, bridges, around electrical power lines, other utilities, or inside structures. Use extreme caution on work sites with limited height and swing/traveling areas such as tunnels, bridges, around electrical power lines, other utilities or inside structure. Keep the machine and its attachment a safe distance to prevent injury, death or damage on equipment or structure. Use a flagman to guide the operators. ## T. DO NOT WORK UNDER PRECIPICE / OVERHANG Do not dig under the precipice. It may cause falling rocks or loosening of the precipice resulting in injury, death or machine damage. <!-- image --> <!-- image --> <!-- image --> １

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- (iii) Employees performing leading edge work in controlled decking zones shall be protected from fall hazards as provided in subparagraph (B). - (B) Controlled Decking Zone (CDZ). A controlled decking zone may be established where fall protection systems as described in subparagraph (A)(i) have been determined to be infeasible. The burden of proving infeasibility is that of the employer. For each CDZ, the following shall apply: - (i) Leading edge work is being performed at heights of ten (10) feet (3.1 m) or more and up to thirty (30) feet (9 m) above the next lower level. - (ii) The boundaries of a CDZ shall be designated and clearly marked by control lines or the equivalent. - (iii) Control lines provide a visible, tangible reference and constant reminder to employees working in a CDZ. - (iv) A control line for a CDZ shall be erected not less than six (6) feet (1.8 m) nor more than ninety (90) feet (27.4 m) from the leading edge. - (v) A control line for a CDZ shall not be more than ninety (90) feet (37.4 m) wide. - (vi) Control lines shall extend along the entire length on the unprotected or leading edge and are approximately parallel to the unprotected or leading edge. - (vii) Control lines consist of ropes, wires, tapes, or equivalent

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## X. WORKING AROUND UTILITIES If it is suspected that utility lines such as, gas, water, phone or electrical power are in the work area, contact the local utility authority for line location BEFORE beginning work in the area. Use extreme caution around electrical power lines. Keep a sufficient distance away from electrical lines during operation. See chart below for minimum distances. <!-- image --> ## Y. SET LIMITS TO WORKING AREA Set limits around the working area to avoid collision, injury or death. Check for obstacles and personnel while swinging. Use a flagman to guide the operator whenever necessary. <!-- image --> ## Z. CAUTION FOR WORK IN URBAN AREAS It is dangerous to allow other personnel to enter into the working area. Make the working area off-limits to other people by providing barricades. Provide a flagman in working areas with heavy traffic to avoid accidents. ## AA. WORK WITH SUFFICIENT LIGHTING When working in dark places, turn on the work lamp. And if required, provide additional lighting facilities to assure good visibility. Stop working when it is impossible to ensure the visual field due to fog, snow or rain. ## BB. SLIPPERY OPERATION SURFACE Use caution when operating machine on boards or steel plates. Boards and steel plates become very slippery when wet. Pay special attention when working on inclined areas. Provide a device to prevent skidding and operate with extra care. Piled up tree leaves or branches also may causes skidding. ## CC. STRENGTHEN SOFT GROUND When working on a soft ground or marshy area, the machine may sink. Be aware that frozen ground becomes soft with the increase of ambient temperature. Use logs or lumber positioned in the opposite direction of the track to prevent the machine from sinking. １

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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ - (5) Overhead lines . If work is to be performed near overhead lines, you must deenergize and ground the lines, or provide other protective measures before work is started. If the lines are to be deenergized, you must make arrangements with the person or organization that operates or controls the electric circuits involved to deenergize and ground them. If protective measures, such as guarding, isolating, or insulating, these precautions must prevent employees from contacting such lines directly with any part of their body or indirectly through conductive materials, tools, or equipment. - (6) Unqualified persons . When an unqualified person is working in an elevated position, or on the ground, near overhead lines, the location must be such that the person and the longest conductive object he or she may contact cannot come closer to any unguarded, energized overhead line than the following distances: - (a) For voltages to ground 50kV or below--10 ft.; - (b) For voltages to ground over 50kV--10 ft. plus 0.4 inch for every 1 kV over 50 kV. - (7) Qualified persons . When a qualified person is working in the vicinity of overhead lines, whether in an elevated position or on the ground, the person must not approach or take any conductive object without an approved insulating handle closer to exposed energized parts than shown in subsections (3) and (4) of this section unless: - (a) The person is insulated from the energized part (gloves, with sleeves if necessary, rated for the voltage involved are considered to be insulation of the person from the energized part on which work is performed); or - (b) The energized part is insulated both from all other conductive objects at a different potential and from the person; or - (c) The person is insulated from all co…