Document pBOqVKqbDLOR0zo1db6XZ286B

22758 Federal Register / Vol. 51, No. 119 / Friday, June 20, 1986 / Rules and Regulations collected following the porocedures with the pennissible exposure limit (ii) In work operations such as specified in Appendix A. prescribed by paragraph (c) of this maintenance and repair activities, or (ii) All samples taken to satisfy the section: other activities for which engineering monitoring requirements of paragraph (0 (A) Local exhaust ventilation and work practice controls are not of this section shall be evaluated using equipped with HEPA filter dust feasible; the OSHA Reference Method (ORM) collection systems; (iii) In work situations where feasible specified in Appendix A, or an (B) General ventilation systems; engineering and work practice controls equivalent counting method. (C) Vacuum cleaners equipped with are not yet sufficient to reduce exposure (iiij If an equivalent method to the HEPA filters; to or below the exposure limit; and ORM is used, the employer shall ensure that the method meets the following criteria: (A) Replicate exposure data used to establish equivalency are collected in side-by-side field and laboratory comparisons; (B) The comparison indicates that 90 percent of the samples collected in the range 0.5 to 2.0 times the permissible limit have an accuracy range of plus or minus 25 percent of the ORM results with a 95 percent confidence level as demonstrated by a statistically valid protocol; and (C) The equivalent method is documented and the results of the comparison testing are maintained. (iv) To satisfy the monitoring requirements of paragraph (f). employers shall rely on the results of monitoring analysis performed by laboratories that have instituted quality assurance programs that include'the elements prescribed in Appendix A: (D) Enclosure or isolation of processes producing asbestos, tremolite, anthophyllite, or actinolite dust; (E) Use of wet methods, welting agents, or removal encapsulants to control employee exposures during asbestos, tremolite, anthophyllite, or actinolite handling, mixing, removal, cutting, application, and cleanup; (F) Prompt disposal of wastes contaminated with asbestos, tremolite, anthophyllite, or actinolite in leak-tight containers; or (G) Use of work practices or other engineering controls that the Assistant Secretary can show to be feasible. (ii) Wherever the feasible engineering and work practice controls described above are not sufficient to reduce employee exposure to or below the limit prescribed in paragraph (c), the employer shall use them to reduce employee exposure to the lowest levels attainable by these controls and shall supplement them by the use of (iv) In emergencies. (2) Respirator selection, (i) Where respirators are used, the employer shall select and provide, at no cost to the employee, the appropriate respirator as specified in Table D-4, and shall ensure that the employee uses the respirator provided. (ii) The employer shall select respirators from among those jointly approved as being acceptable for protection by the Mine Safety and Health Administration (MSHA) and the National Institute for Occupational Safety and Health (NIOSH) under the provisions of 30 CFR Part 11. (iii) The employer shall provide a powered, air-purifying respirator in lieu of any negative-pressure respirator specified in Table D-4 whenever (A) An employee chooses to use this type of respirator; and (B) This respirator will provide adequate protection to the employee. {(6) Employee notification of monitoring results. i) The employer shall notify affected employees of the monitoring results that represent that respiratory protection that complies with the requirements of paragraph (h) of this section. (2) Prohibitions, (i) High-speed Table d-4.-Respiratory protection for Asbestos, Tremolite, Anthophyllite, and Actinolite Fibers employee's exposure as soon as possible following receipt of monitoring results. (ii) The employer shall notify affected employees of the results of monitoring abrasive disc saws that are not equipped with appropriate engineering controls shall not be used for work related to asbestos, tremolite, Airborne concentration ol asbestos, tremolite, anthophyllite. actinolite. or a combination ot these minerals Required respirator representing the employee's exposure in anthophyllite, or actinolite. writing either individually or by posting (ii) Compressed air shall not be used Not in excess ol 2 f/cc 00 X PEL). 1. Half-mask air-purifying respira tor equipped with htgO-efftcterv at a centrally located place that isaccessible to affected employees. (7) Observation ofmonitoring, (i) The employer shall provide affected, employees or their designated to remove asbestos, tremolite, anthophyllite, or actinolite or materials containing asbestos, tremolite, anthophyllite, or actinolite unless the compressed air is used in conjunction Not in excess of to f/cc (50 X PEL). Not in excess of 20 l/cc (100 X PEL). cy lifters. 1. Fun faceptaco air-purifying res pirator equipped with high-effL ciency litters. 1. Any powered air purifying res pirator equipped with high effi ciency titters. representatives an opportunity to observe any.monitoring of employee exposure to asbestos, tremolite, anthophyllite, or actinolite conducted in accordance with this section. with an enclosed ventilation system designed to capture the dust cloud created by the compressed air. (iii) Materials containing asbestos, tremolite, anthophyllite, or actinolite Not in excess of 200 1/ cc (1000 X PEL). Greater than 200 f/cc 2. Any supplied-air respirator op erated in continuous flow mode. 1. Full facepiece suppsted-arr respirator operated In pressure demand mode. t. Full facepiece supplied a* res (ii) When observation,of:the monitoring of employee.exposure, to. asbestos, tremolite, anthophyllite, or . actinolite requires entry into. an.area shall not be applied by spray methods. (3) Employee rotation. The employer shall not use employee rotation as a means of compliance with the exposure (> 1.000 X PEL) or unknown concentration. pirator operated in pressure demand mode equipped with an auxiliary positive pressure self-contained breathing appa ratus. where the use of protective clothing dr equipment is required! the .observer shall be provided with and be required to use such clothing and equipment and shall limit prescribed in paragraph (c) of this section! ... (h) Respiratory protection.--(1) General.The employer shall provide Note.'a. Respirators assigned lor higher environmental concentrations may be used at lower concentrations. b. A high-efficiency liber means e fitter that is at least 99.97 percent efficient against mono-dispersed particles ot 0.3 mferoroetofs in diameter or larger. comply with all, other applicable safety respirators, and ensure that they are (3) Respirator program, (i) Where and health procedures. used, where required by this section. respiratory protection is used, the (g) Methods of compliance.^-{\) Respirators shall be used in the employer shall institute a respirator Engineering controls and work . following circumstances: - program in accordance with 29 CFR . practices, (i) The employer shall-use one (i) During the interval necessary to 1910.134(b), (d), (e), and (f). or any combination of the following install or implement feasible engineering (ii) The employer shall permit each control methods to achieve compliance and work practice controls; employee who uses a filter respirator to GLEASON-OOI006