Subpart V governs construction on power transmission and distribution systems: erecting new lines and equipment, and altering, converting or improving what already exists. An employer that meets 1910.269 is treated as meeting those parts of this subpart that do not cite other Part 1926 subparts, but that does not relieve it of those other subparts. Safe electrical work practices of unqualified workers are outside its reach. The subpart adds to the rest of Part 1926, and 1910.5(c) gives no exemption from it. Line-clearance tree trimming done for an organization that operates or controls the lines, and any work on generation installations, must instead follow 1910.269. Training: every employee is trained in, and familiar with, the subpart's safety practices, procedures and requirements for his or her assignments, plus other safety practices tied to the work that the subpart does not spell out, including emergency procedures like rescue from a pole top or a manhole. How deep the training goes depends on the risk. Qualified employees also need training and competence in telling exposed live parts from other parts, determining nominal voltage, the minimum approach distances for the voltages they will face and how to keep them, proper use of special precautionary techniques, PPE, shielding and insulating materials, and tools with insulation, and recognising and controlling electrical hazards; without that training nobody counts as a qualified person. The employer confirms compliance through regular supervision and inspections at least annually. Retraining follows when supervision or inspection shows noncompliance, when new technology, equipment types or procedure changes call for different practices, or when an employee must use practices outside regular duties (OSHA treats tasks done less often than once a year as needing retraining first). Training is classroom or on-the-job, must establish proficiency and introduce compliance procedures, and is complete only once proficiency is demonstrated. Records are one way to track this but are not mandated; a previously trained employee can be confirmed by checking the training, an examination or interview, then close supervision. Information transfer: before work begins the host employer tells contract employers about installation characteristics in (d)(1) to (d)(5), obtaining them if not on file; known conditions in (d)(6) to (d)(8) available from its records with reasonable diligence; design and operating information the contractor needs for required assessments; and other requested protective information it knows. The contract employer instructs its staff on hazards learned from the host, tells the host before work of unique hazards its own work creates, and reports unanticipated hazards the host did not mention within 2 working days of finding them. Both coordinate work rules and procedures. Existing characteristics and conditions are determined before starting work on or near lines or equipment: nominal voltages, maximum switching-transient voltages, hazardous induced voltages, whether protective grounds and equipment grounding conductors exist and what state they are in, locations of circuits and equipment (supply, communication and fire-protective signaling), pole condition, and environmental conditions.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.