Standard Interpretations - Table of Contents|
| Standard Number:||1910.134|
|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 http://www.osha.gov.|
September 6, 1995
|MEMORANDUM FOR:||Regional Administrators|
National Office Directorates
|FROM:||John B. Miles, Jr., Director|
Directorate of Compliance Programs
|SUBJECT:||Update: OSHA Enforcement Policy for Occupational Exposure to Tuberculosis|
This memorandum provides revised enforcement policy for respiratory protection for occupational exposure to Tuberculosis (TB). In October of 1994, following a call for comments by the CDC, an updated and revised set of guidelines on TB exposure control procedures and recommendations was issued.
The 1994 CDC Guidelines addressed respirators for occupational exposure to TB and specified standard performance criteria for respirators upon exposure to TB These criteria include:
- The ability to filter particles 1 µm in size in the unloaded state with a filter efficiency of greater than or equal to 95% (i.e., filter leakage of less than or equal to 5%), given flow rates of up to 50 L per minute.
- The ability to be qualitatively or quantitatively fit tested in a reliable way to obtain a face-seal leakage of less than or equal to 10%.
- The ability to fit the different facial sizes and characteristics of health care workers which can usually be met by making the respirators available in at least three sizes.
- The ability to be checked for a face piece fit, in accordance with OSHA standards and good industrial hygiene practice, by health care workers each time they put on their respirator.
Respiratory protection (HEPA or respirators certified under 42 CFR Part 84 Subpart K) for employees exposed to TB is required under the following circumstances:
- When workers enter rooms housing individuals with suspected or confirmed infectious TB.
- When workers are present during the performance of high hazard procedures on individuals who have inspected or confirmed infectious TB.
- When emergency-medical-response personnel or others transport, in a closed vehicle an individual with suspected or confirmed infectious TB.
If you have any additional questions or if we can be of any further assistance please do not hesitate to contact the [Office of Health Enforcement at (202) 693-2190].
[This document was edited on 2/4/2004 to strike information that no longer reflects current OSHA policy. On 12/31/2003 29 CFR 1910.139 was revoked and the 1997 proposed standard on Occupational Exposure to Tuberculosis (TB) was withdrawn in the Federal Register.]
|Standard Interpretations - Table of Contents|