CFR > Title 30 - Mineral Resources > CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR > SUBCHAPTER O—COAL MINE SAFETY AND HEALTH (parts 70 to 90) > PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES > SUBPART H—Grounding (§77.700 to §77.705) > 77.704-2—Repairs to energized high-voltage lines.

77.704-2—Repairs to energized high-voltage lines.

An energized high-voltage line may be repaired only when:
(a) The operator has determined that,
(1) Such repairs cannot be scheduled during a period when the power circuit could be properly deenergized and grounded;
(2) Such repairs will be performed on power circuits with a phase-to-phase nominal voltage no greater than 15,000 volts;
(3) Such repairs on circuits with a phase-to-phase nominal voltage of 5,000 volts or more will be performed only with the use of live line tools; and,
(4) Weather conditions will not interfere with such repairs or expose those persons assigned to such work to an imminent danger; and,
(b) The operator has designated a person qualified under the provisions of § 77.104 as the person responsible for carrying out such repairs and such person, in order to ensure protection for himself and other qualified persons assigned to perform such repairs from the hazards of such repair, has prepared and filed with the operator:
(1) A general description of the nature and location of the damage or defect to be repaired;
(2) The general plan to be followed in making such repairs;
(3) A statement that a briefing of all qualified persons assigned to make such repairs was conducted informing them of the general plan, their individual assignments, and the dangers inherent in such assignments;
(4) A list of the proper protective equipment and clothing that will be provided; and
(5) Such other information as the person designated by the operator feels necessary to describe properly the means or methods to be employed in such repairs.