Standard Interpretations - Table of Contents
• Standard Number: 1910.120; 1910.120(q); 1910.1200; 1910.1047; 1910.1047(h); 1910.134; 1910.132

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at

December 2, 1991

Mr. Richard F. Andree
Safety and Health Management Consultants, Inc.
161 William Street
New York, New York 10038

Dear Mr. Andree:

This is in response to your inquiry of May 14, concerning the Occupational Safety and Health Administration's (OSHA) Hazardous Waste Operations and Emergency Response final rule (29 CFR 1910.120). We hope the delay in our reply has not been an inconvenience.

Your specific question concerns the training of a hospital maintenance worker who is expected to respond to ethylene oxide gas leaks. The maintenance worker received training on the proper use of Self Contained Breathing Apparatus (SCBA) and was provided 1910.120 instruction.

OSHA interprets the scope of 1910.120 to cover hospitals in at least three scenarios; 1) when hospitals have an internal release of a hazardous substance which requires an emergency response; 2) when hospitals respond as an integral unit of a community-wide emergency response to a release of hazardous substance; and 3) if a hospital is a RCRA permitted Treatment, Storage and Disposal Facility.

1910.120(q) covers emergency response operations for releases of, or substantial threats of releases of, hazardous substances regardless of location, including hospitals. It is not possible to know, based on your letter, if the leaks you described need to be treated as an emergency response. However, due to the hazards that ethylene oxide presents, most leaks would probably require an emergency response. In any case, if the hospital maintenance worker is expected to handle all releases of ethylene oxide, then the level of training should be based on how to safely handle worse case scenarios. This would most likely require compliance with 1910.120(q).

Your description of the hospital's current procedure to handle ethylene oxide leaks may be adapted to comply with 1910.120 paragraph (q). A few changes may be necessary, such as training a second maintenance worker as back-up to perform assistance or a rescue, if this is not already part of the hospital's procedure.

The Ethylene Oxide Standard (29 CFR 1910.1047) must also be complied with, if the hospital is not already in compliance. 1910.1047 sets forth medical surveillance, handling procedures, and emergency response training based on ethylene oxide's specific hazards. The hospital does not need to train the maintenance worker in emergency response twice, as the training required by 1910.120(q) will meet, and go beyond, the requirements for "emergency situations" in 1910.1047(h). Other standards that are relevant to the hospital's response to ethylene oxide are the Hazard Communication (29 CFR 1910.1200), Respiratory Protection (29 CFR 1910.134), and General Requirements for Personal Protective Equipment (29 CFR 1910.132).

The hospital's maintenance worker may be certified as equivalently trained under 1910.120(q), as per the regulation's training level requirements, which states that emergency responders must be trained "...or have had sufficient experience to objectively demonstrate competency in the following areas..." The hospital must ensure that the employee accomplishes all training objectives. Additionally, employees who fall under 1910.120(q) must receive annual refresher training or demonstrate competencies on a yearly basis, regardless of their previous experience or education.

OSHA does not certify individuals, it is the employer who must show by documentation or certification that an employee's work experience and/or training meets the requirements of 1910.120. There must be a written document which clearly identifies the employee, the person certifying the employee, and the training and/or past experience which meets the requirements. One possibility would be to include this information in the employee's personnel file. The preferred method is to include this information on a separate certificate for each employee.

OSHA is working on a new regulation concerning certification of 1910.120 training programs (29 CFR 1910.121), which will be promulgated in the future. Currently, this new rule is in rule making. Your organization may want to monitor the progress of this new