3. Engineering Controls If . . . The machine or work environment can be physically changed to prevent employee exposure to the potential hazard, Then . . . The hazard can be eliminated with an engineering control.
4.
5. Work Practice Controls If . . . Employees can be removed from exposure to the potential hazard by changing the way they do their jobs, Then . . . The hazard can be eliminated with a work practice control.
14. Welding Shields Protect eyes from burns caused by infrared or intense radiant light, and protect face and eyes from flying sparks, metal spatter, and slag chips produced during welding, brazing, soldering, and cutting.
15. Laser Safety Goggles Protect eyes from intense concentrations of light produced by lasers.
28. Types of Gloves Norfoil laminate resists permeation and breakthrough by an array of toxic/hazardous chemicals. Butyl provides the highest permeation resistance to gas or water vapors; frequently used for ketones (M.E.K., Acetone) and esters (Amyl Acetate, Ethyl Acetate).
29. Types of Gloves (cont’d) Viton is highly resistant to permeation by chlorinated and aromatic solvents. Nitrile provides protection against a wide variety of solvents, harsh chemicals, fats and petroleum products and also provides excellent resistance to cuts, snags, punctures and abrasions.
30. Types of Gloves (cont’d) Kevlar protects against cuts, slashes, and abrasion. Stainless steel mesh protects against cuts and lacerations.
This presentation is designed to assist trainers conducting OSHA 10-hour General Industry outreach training for workers. Since workers are the target audience, this presentation emphasizes hazard identification, avoidance, and control – not standards. No attempt has been made to treat the topic exhaustively. It is essential that trainers tailor their presentations to the needs and understanding of their audience. This presentation is not a substitute for any of the provisions of the Occupational Safety and Health Act of 1970 or for any standards issued by the U.S. Department of Labor. Mention of trade names, commercial products, or organizations does not imply endorsement by the U.S. Department of Labor.
Additional information: OSHA Instruction CPL 2.103, Field Inspection Reference Manual, Chapter IV, Section A 29 CFR 1910, Subpart I, Appendix B 1910.1000(e)
Note : Job rotation of workers only reduces exposure – it does not eliminate the hazard. Machine Shop Example: A milling operation produces large quantities of metal chips that fly all over the surrounding work areas. Recognizing that flying metal chips were a potential hazard to employees in the surrounding areas, the machine shop owner had to decide how best to protect the workers. Option 1—Engineering and work practice controls: Engineering control - Enclose the milling operation or install a deflector to contain the metal chips and prevent them from flying into the surrounding areas. Work practice control - Operate the machine only at certain times of the day when adjacent operations have stopped. Option 2—PPE: Provide employees with safety goggles or safety glasses with side shields. Option 1 is more effective since enclosing the operation will eliminate the hazard of flying metal chips. Providing a deflector will contain most, if not all, of the flying chips. In a machine shop, however, safety glasses should also be required for added protection.
NOTE : Respirators and electrical protective equipment (gloves, sleeves, blankets, etc.) are also considered PPE. However, because OSHA has specific requirements for them, they are not discussed here.
1910.132(d) If all feasible engineering and work practice controls are in place, but employees are still exposed to potential hazards, PPE must be provided. See Checklist B in OSHA Publication 3151, Assessing the Need for PPE, A Guide for Small Business Employers , to assess the need for PPE.
1910.132(f) Each affected employee must demonstrate an understanding of the required training, and the ability to use PPE properly, before being allowed to perform work requiring the use of PPE. When the employee does not have the required skill and understanding, retraining is required. Written certification of completion of training is required.
1910.133 Employers must provide eye protection for employees whenever they are exposed to potential eye injuries during their work if engineering or work practice controls do not eliminate the risk of injury. Eye and face PPE purchased after July 5, 1994 must comply with ANSI Z87.1-1989, American National Standard Practice for Occupational and Educational Eye and Face Protection , and must be distinctly marked to facilitate identification of the manufacturer.
Corrective lenses include contacts and glasses.
1910.133(a)(5) Also see 1910 Subpart Q, Welding, Cutting & Brazing.
1910.135
Hard hats require a hard outer shell and a shock-absorbing lining. The lining should incorporate a head band and straps that suspend the shell from 1 to 1-1/4 inches away from the user’s head to provide shock absorption during impact and ventilation during wear. Protective helmets purchased after July 5, 1994, must comply with ANSI Z89.1-1986, whereas those purchased before this date must meet the ANSI Z89.1-1969 standard. Look at the inside of any protective helmet you are considering for your employees, and you should see a label showing the manufacturer’s name, the ANSI standard it meets, and its class. NOTE : Helmets must be worn as designed to be in compliance with ANSI standards. Do not wear helmets backwards. Employers must make sure that hard hats continue to provide sufficient protection to employees by training employees in the proper use and maintenance of hard hats, including daily inspection. Remove hard hats from service if the suspension system shows signs of deterioration or no longer holds the shell away from the employee’s head. Also make sure the brim or shell is not cracked, perforated or deformed or shows signs of exposure to heat, chemicals, or ultraviolet light. Limit use of paints and stickers which can hide signs of deterioration in the hard hat shell. Paints, paint thinners, and some cleaning agents can weaken the shell of the hard hat and may eliminate electrical resistance.
1910.95 Determining the need to provide hearing protection is complicated. Employee exposure to excessive noise depends upon several factors: - How loud is the noise as measured in decibels (dBA)? - What is the duration of each employee’s exposure to noise? - Do employees move between separate work areas with different noise levels? - Is noise generated from one source or multiple sources? Generally, the louder the noise, the shorter the exposure time before you must provide hearing protection. See the OSHA technical link for Noise and Hearing Conservation and go to Section III, Chapter 5, “Noise Measurement,” at www.osha.gov.
1910.95(b)(1) Employers must implement feasible engineering controls and work practices before resorting to PPE such as earmuffs, earplugs, or canal caps. If engineering and work practice controls do not lower employee noise exposure to acceptable levels, then employers must provide employees with appropriate PPE.
1910.136 Safety footwear must meet the minimum compression and impact performance standards and testing requirements established by ANSI Z41-1991, if purchased after July 5, 1994. Protective footwear purchased before that date must comply with ANSI Z41-1967.
Conductive Shoes Electrically conductive shoes protect against the buildup of static electricity. Essentially, these shoes ground the employees wearing them. Employees working in explosive and hazardous locations such as explosives manufacturing facilities or grain elevators must wear conductive shoes to reduce the risk of static electricity buildup on an employee’s body that could produce a spark and cause an explosion or fire. During training, employees must be instructed not to use foot powder or wear socks made of silk, wool, or nylon with conductive shoes. Foot powder insulates and retards the conductive ability of the shoes. Silk, wool, and nylon produce static electricity. Conductive shoes are not general-purpose shoes and must be removed upon completion of the tasks for which they are required. Employees exposed to electrical hazards must NEVER wear conductive shoes. Electrical Hazard, Safety-Toe Shoes Electrical hazard, safety-toe shoes are nonconductive and will prevent your employee’s feet from completing an electrical circuit to ground. They can protect employees against open circuits of up to 600 volts in dry conditions. These shoes should be used in conjunction with other insulating equipment and precautions to reduce or eliminate the potential for providing a path for hazardous electrical energy. NOTE : Nonconductive footwear must not be used in explosive or hazardous locations; in such locations, electrically conductive shoes are required.
1910.138
The nature of the hazard(s) and the operation to be performed will determine your selection of gloves. The variety of potential hand injuries may make selecting the appropriate pair of gloves more difficult than choosing other protective equipment. Take care to choose gloves designed for the particular circumstances of your workplace. Glove manufacturers can provide valuable assistance.
1910.132(a)
Protective clothing comes in a variety of materials, each suited to particular hazards. Conduct your hazard assessment and identify potential sources of bodily injury. Install feasible engineering controls, and institute work practice controls to eliminate the hazards. If the possibility of bodily injury still exists, provide protective clothing constructed of material that will protect against the specific hazards in your workplace. Different materials will protect against different chemical and physical hazards. When chemical or physical hazards are present, check with the clothing manufacturer to make sure that the material selected will provide protection from the specific chemical or physical hazards in your workplace.
For more information: -- OSHA Publication 3151 , Assessing the Need for Personal Protective Equipment: A Guide for Small Business Employers. It is available at OSHA’s home page (www.osha.gov), or for sale by the U.S. Government Printing Office, Washington, DC.
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