Subpart S—Electrical

Subpart S relates to the installation and use of electrical power on worksites, including both permanent and temporary. The two areas of emphasis within this subpart are installation safety requirements 

The primary pnrpose of this snbpart is to protect workers from coming into contact with energized electrical power sonrces. 

Note that noncompliance with various OSHA-required electrical safe work practices is one of the top ten violations listed in Table 9.12. The common use of electricity and electrical equipment and appliances has resulted in failure of most persons to appreciate the hazards involved. These hazards can be divided into five principal categories (1) shock to persormel, (2) ignition of combustible (or explosive) materials, (3) overheating and damage to equipment, (4) electrical explosions, and (5) inadvertent activation of equipment (Hammer, 1989). 

If you were to take a look at the annual on-the-job injury statistics for all employers in the United States, you would quickly notice that many of these injuries are typically the result of electrical shock, injuries received during electrical fires, or injuries received when some electrical component fails due to faulty installation, faulty maintenance conducted on electrical equipment, or equipment malfunction caused by manufacturer errors. 

Per NEC and all local code requirements, safety officials must ensure that any planned electrical equipment is suitable for installation in the proposed installation areas. If a new electrical motor and controller are to be installed in an area that contains explosive vapors, the proper class of electrical motor and control equipment must be installed in such a space to prevent the possibility of explosion, based on NFPA recommendations. 

OSHA standards relating to electricity can be found in 29 CFR 1910, Subpart S. They are extracted from the National Electrical Code. Subpart S is divided into the following two categories of standards (1) Design of Electrical Systems, and (2) Safety-Related Work Practices. 

Note This is not to say that the safety official must be an electrical engineer. Instead, we recommend some training in the fundamentals of electricity—this training should be included in the safety official s formal college or advanced short-school training. The minimum electrical system and component operation knowledge that safety officials should have is covered in the following discussion. 

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OSHA, G eral Industry Standards, Subpart S-Electrical 29 CFR 1910.30 1-339. 

SuBPART S — Electrical Safety-Related Work Practices... 

Also, the standard does not apply if an employer has an emergency generator. An emergency generator, as would all of a facilities electrical equipment, falls under 1910 Subpart S, Electrical. ... 

U.S. Department of Labor, Occupational Safely and Health Administration 29 CFR Part 1910, Occupational Safety and Health Standards for General Industry, Subpart S, Electrical, 1910.301 to 1910.399 including 1910.331 through 1910.335 Electrical Safely Related Woik Practices Subpart J, General Environmental Controls, 1910.147, The Control of Hazardous Energy Sources (Lockout/Tagout) 29 CFR Part 1926, Occupational Safety and Health Standards for the Construction Industry, Subpart K, Electrical, 1926.400 to 1926.449... 

NFPA 111, Stored Electrical Energy Emergency and Standby Power Systems 29 CFR 1910.147, Control of Hazardous Energy (Lockout/Tagout Requirements) 29 CFR 1910 Subpart S, Electrical/Safeguarding Employees... 

OSHA 29 CFR 1910, Subpart S—Electrical, Electrical Industry Safe Occupational Working Standards. 

Title 29, Occupational Safety and Health Standards, Subpart S, Part 1910 Electrical... 

Normally, electrical equipment must be approved as an assembly by a nationally-recognized testing laboratory to be acceptable under the General Industry or Construction Electrical Standards (Part 1910, Subpart S and Part 1926, Subpart K, respectively). 

Wiring conformance. Electrical wiring and equipment shaii conform to the provisions of this paragraph and shaii otherwise be in accordance with Subpart S of this part. 

OSHA s general industry electrical standards found in Subpart S 1910.301 through 1910.399, are based on the National Fire Protection Association s Standard NFPA 70E, Electrical Safety Requirements for Employee Workplaces, and the National Electrical Code (NEC). In addition to general industry, they apply to shipyard employment, longshoring, and marine terminals. 

The insulation of flexible cords, such as extension cords, is particularly vulnerable to damage. The insulation that covers conductors is regulated by Subpart S, Part 1910.302, Design Safety Standards for Electrical Systems. 

Employees and others working with electric equipment need to use safe work practices. Electrical safety-related work practice requirements are contained in Subpart S, Sections 1910.331-1910.335. These include ... 

OSHA s electrical safety regulation 1910, Subpart S, is divided into two parts Installation of Electrical Systems and Safety-Related Work Practices. 1910.399 provides important definitions for both parts. 

The contractor s model, AV-4POLY, is a compact, easy-to-carry HEPA vacuum, which uses either an electric or pneumatic beater bar assembly. All of our Electric HEPA Vacuums meet the ERA S New RRP (Renovation, Repair and Painting Regulations) 40CFR, Part 745, Subpart E. Supplied standard with an external electric receptacle to operate an optional beater bar power head for use on lead and asbestos abatement projects. Contact Air Systems for more information 1-800-866-8100. Circle 329... 

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