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�� ,�,� _�-_�..: .. ...�.� _- .v �•----.�. .�.�........�....�.�f-�-�... �............. .-T ter. T .. ...-..r...« - »�... �. �. �...�... ��.. :-... � :+.r.- .... ,rte r-i, rn r—i r-1. rn. t�7-, r-i. r-i. r-i. rn. ir-i, r7, r-1, lighted without shadows or blind spots. The followh,�,, are to the nearest power line when the mast is raised and/or being specific recommendations for land-based drilling operations: raised. If this horizontal distance is less than 100 ft.(30 m),first consult the local utility company and refer to OSHA REG 29 CFR 1910.180 before commencing operations. • Keep in mind that both hoist lines and overhead power lines can be moved toward each other by the wind. • In order to avoid contact with power lines,only move the drill rig with the mast (derrick)down. • If there are any questions concerning the safety of drilling on sites in the vicinity of overhead power lines, call the power company.The powercompany will provide expert advice at the drilling site as a public service and at no cost. Electricity is as dangerous underground as overhead. Be ON aware of and always suspect the existence of underground utilities such as electrical power, gas, petroleum, telephone, sewer and water. • If a sign warning of underground utilities is located on a site boundary,do not assume that underground utilities are located ° on or near the boundary or property line under the sign.Call the utility and check it out.The underground utilities may be a con- siderable distance away from the warning sign. _ • Always contact the owners of utility lines or the nearest OFF underground utility location service before drilling. Determine jointly with uiiiity personnel the precise location of underground utility lines, mark and flag the locations, and determine jointly with utility personnel what specific precautions must be taken to ensure safety. 12. Supplying Power to the Job Site Drilling projects sometimes require around-the-clock opera- tions and, therefore, require temporary electrical lighting. In general,all wiring and fixtures used to provide electricity fordrill- Before working on an electrical power or lighting system, Ing operations should be installed by qualified personnel in lock-out the main panel box with your own lock and keep the key accordance with the National Electrical Code(N FPA70-1984)with on your person at all times. consideration of the American Petroleum Institute's recom- • Install all wiring using high quality connections,fixtures and mended practices for electrical installations for production wire. Be sure that the wiring is insulated and protected with facilities (API-RP-500B). Lights should be installed and posi- consideration for the drilling environment. Do not use makeshift tioned so that the work area and operating positions are well -22- -21-