Electric Power Generation, Transmission and Distribution is the set of OSHA standards that protect workers who operate, maintain and build electric utility systems: 29 CFR 1910.269 for operation and maintenance work and 29 CFR 1926 Subpart V for construction of transmission and distribution lines. They cover qualified employee training, job briefings, minimum approach distances, protection from flames and electric arcs, fall protection, deenergizing and grounding.
Line workers, substation technicians, generating plant staff and line-clearance tree trimmers face some of the most serious hazards in any industry: electrocution, arc flash burns and falls from poles and towers.
What Are the Electric Power Standards?
29 CFR 1910.269 applies to the operation and maintenance of electric power generation, control, transformation, transmission and distribution lines and equipment. 29 CFR 1926 Subpart V, sections 1926.950 through 1926.968, covers the construction of electric power transmission and distribution lines and equipment, including erecting new lines and altering, converting or improving existing ones.
OSHA revised both standards in a final rule published April 11, 2014, which took effect July 10, 2014 and made the general industry and construction requirements largely the same. The same rule revised the electrical protective equipment standard at 1910.137 and added a new construction standard at 1926.97. Under a note to 1926.950(a)(1)(i), an employer that complies with 1910.269 is considered in compliance with the Subpart V requirements that do not reference other subparts.
Who Must Comply?
Employers whose employees operate or maintain power generation plants, substations and transmission and distribution lines are covered by 1910.269, including line-clearance tree trimming. Construction of transmission and distribution lines falls under Subpart V. Under 1910.269(a)(1)(ii), electrical installations and safety-related work practices covered by Subpart S are excluded, and work practices that conform to 1910.332 through 1910.335 are treated as compliant with specified provisions of 1910.269.
The standards also govern relationships between utilities and contractors. Under 1910.269(a)(3) and 1926.950(c), the host employer must tell contract employers about the characteristics of the installation and known hazardous conditions before work begins. The contract employer must instruct its employees in those hazards, advise the host of any unique hazards its work presents, and report unanticipated hazards within 2 working days of discovering them.
Key Requirements
Qualified employees and training
Every employee must be trained in the safety-related work practices that apply to their job, with the degree of training based on the risk involved. Only qualified employees may work on or near exposed energized parts. Under 1910.269(a)(2)(ii) and 1926.950(b)(2), a qualified employee must be trained and competent in:
- Distinguishing exposed live parts from other parts of electric equipment.
- Determining the nominal voltage of exposed live parts.
- The minimum approach distances for the voltages involved and how to maintain them.
- Special precautionary techniques, personal protective equipment, insulating and shielding materials and insulated tools.
- Recognizing electrical hazards and controlling or avoiding them.
Employers must confirm compliance through regular supervision and inspections at least once a year. Retraining is required when an inspection shows noncompliance, when new technology or procedures require different practices, or when an employee must use practices not normally used. OSHA considers tasks performed less than once a year to require retraining before the task is done. Training is complete only when the employee has demonstrated proficiency.
Job briefings
Under 1910.269(c) and 1926.952, the employee in charge must hold a job briefing with the crew before each job. The briefing covers hazards, work procedures, special precautions, energy source controls and personal protective equipment. For repetitive or similar work, at least one briefing is required before the start of the first job of each day or shift, with additional briefings when significant changes occur. Routine work may need only a brief discussion, but complicated or particularly hazardous work requires a more extensive one. A worker working alone must still plan the work as if a briefing were required. Job briefings serve a similar purpose to a toolbox talk, but they are mandatory and job specific.
Minimum approach distances
Employers must establish minimum approach distances no smaller than those in Table R-3 of 1910.269 or Table V-2 of Subpart V for alternating current systems, and the corresponding tables for direct current. For voltages over 72.5 kilovolts, employers had to determine the maximum anticipated per-unit transient overvoltage by engineering analysis, or assume a value from the standard's tables, no later than April 1, 2015. No employee may approach, or take any conductive object, closer to exposed energized parts than the minimum approach distance unless insulated from the energized part or the part is insulated from the employee.
Two-person rule
At least two employees must be present for certain work on lines or equipment energized at more than 600 volts, such as installing, removing or repairing energized lines. Exceptions include routine switching of circuits where conditions allow it to be done safely, work with live-line tools where the employee is positioned out of reach of energized parts, and emergency repairs to safeguard the public.
Protection from flames and electric arcs
Under 1910.269(l)(8) and 1926.960(g), employers must assess the workplace to identify employees exposed to flame or arc flash hazards and make a reasonable estimate of the incident heat energy each exposed employee could face. Clothing that could melt onto skin or ignite and continue to burn, such as untreated acetate, nylon, polyester, rayon and polypropylene, is prohibited. Requirements include:
- Flame-resistant outer layer: required when an employee could contact energized parts over 600 volts, when an arc could ignite flammable material or clothing, or when the estimated incident heat energy exceeds 2.0 cal/cm².
- Arc-rated protection: when the estimate exceeds 2.0 cal/cm², protective clothing and equipment must have an arc rating at least equal to the estimate and cover the employee's entire body, with limited exceptions for hands, feet, head and face.
- Compliance dates: incident energy estimates were required by January 1, 2015, and the flame-resistant and arc-rated protection requirements by April 1, 2015.
Fall protection
Employees working from aerial lifts must use a travel restraint or personal fall arrest system. Employees more than 4 feet above the ground on poles, towers or similar structures must use fall protection. Since April 1, 2015, qualified employees climbing or changing location on poles, towers or similar structures must also use fall protection unless the employer can show that climbing with it is infeasible or creates a greater hazard. Work positioning equipment must be inspected before use each day.
First aid, deenergizing and grounding
When employees work on or near lines or equipment energized at 50 volts or more, persons with first aid training must be available. For field work involving two or more employees, at least two trained persons are required. At fixed work locations such as substations, enough trained persons must be available to reach each exposed employee within 4 minutes. Lines and equipment must be treated as energized until they are deenergized under the standard's clearance procedures, and grounding is used to protect employees working on deenergized lines.
Records and Inspection
In practice, employers should keep:
- Training and proficiency records. 1910.269(a)(2) does not require them, but they help show each employee demonstrated proficiency.
- Records of the annual inspections of employee work practices.
- Engineering analyses for transient overvoltage and incident heat energy estimates.
- Host and contractor information exchanges and reports of unanticipated hazards.
- Inspection and test records for rubber insulating equipment under 1910.137 or 1926.97.
Common Violations and Penalties
- Encroaching on minimum approach distances. Employees or conductive objects too close to energized lines.
- No incident energy estimate. Or arc-rated clothing below the estimated exposure.
- Skipped job briefings. Especially when conditions change during the day.
- Climbing without fall protection. Failing to use fall protection on poles and towers.
- Unqualified employees near energized parts. Or no proof that training was completed.
- Poor host and contractor communication. Known hazards not shared before work begins.
For 2026, OSHA's maximum civil penalties are $16,550 per serious or other-than-serious violation and $165,514 per willful or repeated violation. Amounts are adjusted for inflation, so check OSHA's penalties page for current figures. States with OSHA-approved State Plans set their own amounts.
How to Comply: Step by Step
- Determine coverage. Decide which work falls under 1910.269, Subpart V or Subpart S.
- Train and qualify employees. Cover the required topics, observe proficiency and document who is qualified.
- Set minimum approach distances. Use the standard's tables and complete any required engineering analysis.
- Estimate incident energy. Assess arc hazards and select flame-resistant and arc-rated clothing to match.
- Brief every job. Hold and record job briefings before each job and when conditions change.
- Provide fall protection. Equip aerial lift and climbing work with compliant systems and inspect them daily.
- Coordinate with contractors. Exchange hazard information before work begins.
- Inspect work practices. Observe crews at least annually and retrain where gaps appear.
How SMS360 Helps
SMS360's Training Management module helps utilities and contractors keep track of who is qualified for which work. Safety managers can record qualified employee training, proficiency evaluations and refresher dates, assign retraining after inspections or procedure changes, and receive reminders before qualifications lapse. Supervisors can check a crew member's qualifications from a mobile device before a job briefing, and records are ready when an OSHA inspector asks how training was verified.
Frequently Asked Questions
What is the difference between 1910.269 and 1926 Subpart V?
1910.269 covers the operation and maintenance of power generation, transmission and distribution systems. Subpart V covers construction of transmission and distribution lines and equipment. After the 2014 revisions, the requirements are largely the same, and complying with 1910.269 counts as compliance with Subpart V requirements that do not reference other subparts.
When is arc-rated clothing required?
When the employer's estimate of incident heat energy exceeds 2.0 cal/cm², employees must wear protective clothing and equipment with an arc rating at least equal to the estimate. Clothing that could melt or continue to burn is prohibited for any employee exposed to flames or electric arcs.
Do line workers need fall protection when climbing poles?
Yes. Since April 1, 2015, qualified employees climbing or changing location on poles, towers or similar structures must use fall protection unless the employer shows it is infeasible or creates a greater hazard. Employees more than 4 feet up must use fall protection while working.
How often are job briefings required?
A job briefing is required before each job. For repetitive or similar work, at least one briefing is required before the first job of each day or shift, plus additional briefings when significant changes occur.
