42 C.F.R. Subpart KK—Dust, Fume, and Mist; Pesticide; Paint Spray; Powered Air-Purifying High Efficiency Respirators and Combination Gas Masks
Title 42 - Public Health
Title 42: Public Health
PART 84—APPROVAL OF RESPIRATORY PROTECTIVE DEVICES
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Subpart KK—Dust, Fume, and Mist; Pesticide; Paint Spray; Powered Air-Purifying High Efficiency Respirators and Combination Gas Masks
§ 84.1100 Scope and effective dates.
The purpose of this subpart KK is to establish procedures and requirements for issuing extensions of approval of particulate respirators certified prior to July 10, 1995 under the provisions of 30 CFR part 11 (See 30 CFR part 11 edition, as revised July 1, 1994.), new approvals and extensions of approval of particulate respirators for applications that are in NIOSH receipt on July 10, 1995, and approval of powered air-purifying respirators.
(a) Air-purifying respirators with particulate filters approved under the provisions of this subpart after July 10, 1995 will have a 30 CFR part 11 approval label.
(b) Only changes or modifications of non-powered air-purifying respirators with particulate filters approved under the provisions of subparts I, K, L, or M of 30 CFR part 11 or paragraph (a) of this section and deemed necessary by NIOSH to ensure the health and safety of the wearer will be approved until July 10, 1998 and will have a 30 CFR part 11 approval label.
(c) Only changes or modifications of powered air-purifying respirators with particulate filters approved under the provisions of subparts I, K, L, or M of 30 CFR part 11 or paragraph (a) of this section and deemed necessary by NIOSH to ensure the health and safety of the wearer will be approved under this subpart until July 10, 1998 and will have a 30 CFR part 11 label.
(d) Approval of powered air-purifying respirators will be issued under this subpart. Particulate filters for powered air-purifying respirators approved under the provisions of this subpart shall be only high-efficiency (HEPA) as described in §84.1130(a)(4) and will carry a 42 CFR part 84 approval label. In addition, changes or modifications of powered HEPA air-purifying respirators approved under the provisions of this subpart KK will be approved under this subpart and will have a 42 CFR part 84 approval label.
§ 84.1101 Definitions.
As used in this subpart
(a) Air Contamination Level means the standards of contaminant levels prescribed by the Secretary of Labor in accordance with the provisions of the Occupational Safety and Health Act of 1970 (Pub. L. 91–596; 84 Stat. 1590).
(b) DOP means a homogenous liquid aerosol, having a particle diameter of 0.3 micrometer, which is generated by vaporization and condensation of dioctyl phthalate.
(c) Pesticide means:
(1) Any substance or mixture of substances (including solvents and impurities) intended to prevent, destroy, repel, or mitigate any insect, rodent, nematode, fungus, weed, or other form of plant or animal life or virus; and
(2) Any substance or mixture of substances (including solvents and impurities) intended for use as a plant regulator, defoliant, or desiccant, as defined in the Federal Insecticide, Fungicide, and Rodenticide Act of 1947, as amended (7 U.S.C. 135–135k), excluding fumigants which are applied as gases or vapors or in a solid or liquid form as pellets or poured liquids for subsequent release as gases or vapors.
(d) Radionuclide means an atom identified by the constitution of its nucleus (specified by the number of protons Z, number of neutrons N, and energy, or, alternatively, by the atomic number Z, mass number A=(N+Z), and atomic mass) which exists for a measurable time; decays or disintegrates spontaneously, emits radiation, and results in the formation of new nuclides.
(e) Smoke means the products of incomplete combustion of organic substances in the form of solid and liquid particles and gaseous products in air, usually of sufficient concentration to perceptibility obscure vision.
§ 84.1102 Examination, inspection and testing of complete respirator assemblies; fees.
The following fees shall be charged by the Institute for the examination, inspection and testing of complete respirator assemblies approved under this subpart:
(a) Gas masks with particulate filter, including pesticide gas masks—
(1) Single hazard—$1,100.
(2) Type N—$4,100.
(b) Dust, fume and mist respirators—
(1) Single particulate hazard having an Air Contamination Level more than 0.05 mg./m.3 or 2 million particles per cubic foot—$500.
(2) Combination particulate hazards having an Air Contamination Level more than 0.05 mg./m.3 or 2 million particles per cubic foot—$750.
(3) Particulate hazards having an Air Contamination Level less than 0.05 mg./m.3 or 2 million particles per cubic foot, radon daughters—$1,250.
(4) All dusts, fumes and mists—$2,000.
(c) Paint spray respirators—$1,600.
(d) Pesticide respirators—$1,600.
(e) Chemical cartridge respirators with particulate filter—$1,150.
§ 84.1103 Approval labels and markings; approval of contents; use.
(a) Full-scale reproductions of approval labels and markings, and a sketch or description of the method of application and position on the harness, container, canister, cartridge, filter, or other component, together with instructions for the use and maintenance of the respirator shall be submitted to MSHA and the Institute for approval.
(b) Approval labels for non-powered and powered air-purifying dust, fume, mist respirators approved prior to July 10, 1995 under the provisions of subpart K of 30 CFR part 11 (See 30 CFR Part 11 edition, revised as of July 1, 1994.) shall bear the emblem of the Mine Safety and Health Administration and the seal of the Department of Health and Human Services, the applicant's name and address, an approval number assigned by the Institute, a statement that the respirator was tested and approved under subpart K of 30 CFR part 11 and, where appropriate, restrictions or limitations placed upon the use of the respirator by the Institute. The approval number assigned by the Institute shall be designated by the prefix TC and a serial number.
(c) Approval labels for powered air-purifying respirators approved under the provisions of this subpart shall bear the emblem of the National Institute for Occupational Safety and Health and the seal of the Department of Health and Human Services, the applicant's name and address, an approval number assigned by the Institute, a statement stating the respirator was tested under the provisions of this subpart, and, where appropriate, restrictions or limitations placed upon the use of the respirator by the Institute. The approval number assigned by the Institute shall be designated by the prefix TC and a serial number.
(c) The Institute shall, where necessary, notify the applicant when additional labels, markings, or instructions will be required.
(d) Approval labels and markings shall only be used by the applicant to whom they were issued.
(e) Legible reproductions or abbreviated forms of the label approved by the Institute for use on each respirator shall be attached to or printed at the following locations:
------------------------------------------------------------------------ Respirator type Label type Location------------------------------------------------------------------------Gas mask with a particulate Entire........... Mask and container. filter, including pesticide gas mask.Dust, fume, and mist Entire........... Respirator container respirators. and filter container. Abbreviated...... Filters.Chemical-cartridge respirator Entire........... Respirator container, with a particulate filter, cartridge container, including paint spray and filter respirator. containers (where applicable). Abbreviated...... Cartridges and filters and filter containers.Pesticide respirator.......... Entire........... Respirator container, and cartridge and filter containers. Abbreviated...... Cartridges and filters.------------------------------------------------------------------------
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(f) The use of any MSHA and Institute approval label obligates the applicant to whom it is issued to maintain or cause to be maintained the approved quality control sampling schedule and the acceptable quality level for each characteristic tested, and to assure that it is manufactured according to the drawings and specifications upon which the certificate of approval is based.
(g) Each respirator, respirator component, and respirator container shall, as required by the Institute to assure quality control and proper use of the respirator, be labeled distinctly to show the name of the applicant, and the name and letters or numbers by which the respirator or respirator component is designated for trade purposes, and the lot number, serial number, or approximate date of manufacture.
Editorial Note: At 60 FR 30388, June 8, 1995, §84.1103 was added with two paragraph (c) designations.
§ 84.1130 Respirators; description.
(a) Dust, fume, and mist respirators, including all completely assembled respirators designed for use as respiratory protection during entry into and escape from atmospheres which contain adequate oxygen to support life and hazardous particulates, are described as follows:
(1) Air-purifying respirators, either with replaceable or reusable filters, designed as respiratory protection against dusts:
(i) Having an air contamination level not less than 0.05 milligram per cubic meter of air, including but not limited to coal, arsenic, cadmium, chromium, lead, and manganese; or
(ii) Having an air contamination level not less than 2 million particles per cubic foot of air, including but not limited to aluminum, flour, iron ore, and free silica, resulting principally from the disintegration of a solid, e.g., dust clouds produced in mining, quarrying, and tunneling, and in dusts produced during industrial operations, such as grinding, crushing, and the general processing of minerals and other materials.
(2) Air-purifying respirators, with replaceable filters, designed as respiratory protection against fumes of various metals having an air contamination level not less than 0.05 milligram per cubic meter, including but not limited to aluminum, antimony, arsenic, cadmium, chromium, copper, iron, lead, magnesium, manganese, mercury (except mercury vapor), and zinc, which result from the sublimation or condensation of their respective vapors, or from the chemical reaction between their respective vapors and gases.
(3) Air-purifying respirators, with replaceable filters, designed as respiratory protection against mists of materials having an air contamination level not less than 0.05 milligram per cubic meter or 2 million particles per cubic foot, e.g., mists produced by spray coating with vitreous enamels, chromic acid mist produced during chromium plating, and other mists of materials whose liquid vehicle does not produce harmful gases or vapors.
(4) Air-purifying respirators, with replaceable filters, designed as respiratory protection against dusts, fumes, and mists having an air contamination level less than 0.05 milligram per cubic meter, including but not limited to lithium hydride and beryllium, and against radionuclides.
(5) Air-purifying respirators, with replaceable filters, designed as respiratory protection against radon daughters, and radon daughters attached to dusts, fumes, and mists.
(6) Air-purifying respirators, with replaceable filters, designed as respiratory protection against asbestos-containing dusts and mists.
(7) Air-purifying respirators, with replaceable filters, designed as protection against various combinations of particulate matter.
(8) Air-purifying dust respirators designed as respiratory protection against pneumoconiosis- and fibrosis-producing dusts, or dusts and mists, including but not limited to aluminum, asbestos, coal, flour, iron ore, and free silica.
(b) Gas masks containing filters for protection against dusts, fumes, mists, and smokes in combination with gases, vapors, or gases and vapors. These respirators are not for use against gases or vapors with poor warning properties (except where MSHA or Occupational Safety and Health Administration standards may permit such use for a specific gas or vapor) or those which generate high heats of reaction with sorbent material in the canister.
(c) Pesticide respirators, including all completely assembled respirators which are designed for use as respiratory protection during entry into and escape from atmospheres which contain pesticide hazards, are described according to their construction as follows:
(1) Front-mounted or back-mounted gas masks;
(2) Chin-style gas mask;
(3) Chemical cartridge;
(4) Air-purifying respirator with attached blower; and,
(5) Other devices, including combination respirators.
(d) Respirators with cartridges containing or having attached to them, filters for protection against mists of paints, lacquers, and enamels. These respirators are not for use against gases or vapors with poor warning properties (except where MSHA or Occupational Safety and Health Administration standards may permit such use for a specific gas or vapor) or those which generate high heats of reaction with sorbent material in the cartridge.
(e) Respirators with cartridges containing or having attached to them filters for protection against dusts, fumes, and mists, except the mists of paints, lacquers, and enamels. These respirators are not for use against gases or vapors with poor warning properties (except where MSHA or Occupational Safety and Health Administration standards may permit such use for a specific gas or vapor) or those which generate high heats of reaction with sorbent material in the cartridge. § 84.1131 Respirators; required components.
(a) Each respirator described in §84.1130 shall, where its design requires, contain the following component parts:
(1) Facepiece, mouthpiece with noseclip, hood, or helmet;
(2) Filter unit, canister with filter, or cartridge with filter;
(3) Harness;
(4) Attached blower; and
(5) Breathing tube.
(b) The components of each respirator shall meet the minimum construction requirements set forth in Subpart G of this part. § 84.1132 Breathing tubes; minimum requirements.
(a) Flexible breathing tubes used in conjunction with respirators shall be designed and constructed to prevent:
(1) Restriction of free head movement;
(2) Disturbance of the fit of facepieces, mouthpieces, hoods, or helmets;
(3) Interference with the wearer's activities; and
(4) Shutoff of airflow due to kinking, or from chin or arm pressure. § 84.1133 Harnesses; installation and construction; minimum requirements.
(a) Each respirator shall, where necessary, be equipped with a suitable harness designed and constructed to hold the components of the respirator in position against the wearer's body.
(b) Harnesses shall be designed and constructed to permit easy removal and replacement of respirator parts, and, where applicable, provide for holding a full facepiece in the ready position when not in use. § 84.1134 Respirator containers; minimum requirements.
(a) Except as provided in paragraph (b) of this section each respirator shall be equipped with a substantial, durable container bearing markings which show the applicant's name, the type of respirator it contains, and all appropriate approval labels. Except for dust, fume, and mist respirators, the commercial designation of the respirator it contains shall be shown.
(b) Containers for single-use respirators may provide for storage of more than one respirator, however, such containers shall be designed and constructed to prevent contamination of respirators which are not removed, and to prevent damage to respirators during transit.
(c) Containers for gas masks combinations shall be designed and constructed to permit easy removal of the mask. § 84.1135 Half-mask facepieces, full facepieces, hoods, helmets, and mouthpieces; fit; minimum requirements.
(a) Half-mask facepieces and full facepieces shall be designed and constructed to fit persons with various facial shapes and sizes either:
(1) By providing more than one facepiece size; or
(2) By providing one facepiece size which will fit varying facial shapes and sizes.
(b) Full facepieces shall provide for optional use of corrective spectacles or lenses, which shall not reduce the respiratory protective qualities of the respirator.
(c) Hoods and helmets shall be designed and constructed to fit persons with various head sizes, provide for the optional use of corrective spectacles or lenses, and insure against any restriction of movement by the wearer.
(d) Mouthpieces shall be equipped with noseclips which are securely attached to the mouthpiece or respirator and provide an airtight seal.
(e) Facepieces, hoods, and helmets shall be designed to prevent eyepiece fogging.
(f) Half-mask facepieces shall not interfere with the fit of common industrial safety corrective spectacles, as determined by the Institute's facepiece tests in §§84.1141, 84.1142, and 84.1156(b). § 84.1136 Facepieces, hoods, and helmets; eyepieces; minimum requirements.
(a) Facepieces, hoods, and helmets shall be designed and constructed to provide adequate vision which is not distorted by the eyepieces.
(b) All eyepieces of gas masks combinations shall be designed and constructed to be impact and penetration resistant. Federal Specification, Mask, Air Line: and Respirator, Air Filtering, Industrial, GGG-M-125d, October 11, 1965, with interim amendment-1, July 30, 1969, is an example of an appropriate standard for determining impact and penetration resistance. Copies of GGG-M-125d may be obtained from the NIOSH, Certification and Quality Assurance Branch, 1095 Willowdale Road, Morgantown, WV 26505–2888. § 84.1137 Inhalation and exhalation valves; minimum requirements.
(a) Inhalation and exhalation valves shall be protected against distortion.
(b) Inhalation valves shall be designed and constructed and provided where necessary to prevent excessive exhaled air from adversely affecting filters, cartridges, and canisters, except where filters of dust, fume, and mist respirators are specifically designed to resist moisture as prescribed in §84.1145.
(c) Exhalation valves shall be:
(1) Provided where necessary;
(2) Protected against damage and external influence; and
(3) Designed and constructed to prevent inward leakage of contaminated air. § 84.1138 Head harnesses; minimum requirements.
(a) All facepieces shall be equipped with head harnesses designed and constructed to provide adequate tension during use and an even distribution of pressure over the entire area in contact with the face.
(b) Facepiece head harnesses, except those employed on single-use dust, fume, and mist respirators, shall be adjustable and replaceable.
(c) Mouthpieces shall be equipped, where applicable, with adjustable and replaceable harnesses, designed and constructed to hold the mouthpiece in place. § 84.1139 Air velocity and noise levels; hoods and helmets; minimum requirements.
Noise levels generated by the respirator will be measured inside the hood or helmet at maximum airflow obtainable and shall not exceed 80 dBA. § 84.1140 Dust, fume, and mist respirators; performance requirements; general.
Dust, fume, and mist respirators and the individual components of each such device shall, as appropriate, meet the requirements for performance and protection specified in the tests described in §§84.1141 through 84.1152 and prescribed in Tables 12 and 13. § 84.1141 Isoamyl acetate tightness test; dust, fume, and mist respirators designed for respiratory protection against fumes of various metals having an air contamination level not less than 0.05 milligram per cubic meter; minimum requirements.
(a) The respirator will be modified in such a manner that all of the air that normally would be inhaled through the inhalation port(s) is drawn through an efficient activated charcoal-filled canister, or cartridge(s), without interference with the face-contacting portion of the facepiece.
(b) The modified respirator will be worn by persons for at least 2 minutes each in a test chamber containing 100 parts (by volume) of isoamyl-acetate vapor per million parts of air.
(c) The odor of isoamyl-acetate shall not be detected by the wearers of the modified respirator while in the test atmosphere. § 84.1142 Isoamyl acetate tightness test; respirators designed for respiratory protection against dusts, fumes, and mists having an air contamination level less than 0.05 milligram per cubic meter, or against radionuclides; minimum requirements.
(a) The applicant shall provide a charcoal-filled canister or cartridge of a size and resistance similar to the filter unit with connectors which can be attached to the facepiece in the same manner as the filter unit.
(b)(1) The canister or cartridge will be used in place of the filter unit, and persons will each wear a modified half-mask facepiece for 5 minutes in a test chamber containing 100 parts (by volume) of isoamyl-acetate vapor per million parts of air.
(2) The following work schedule will be performed by each wearer in the test chamber:
(i) Two minutes walking, nodding, and shaking head in normal movements; and
(ii) Three minutes exercising and running in place.
(3) The facepiece shall be capable of adjustment, according to the applicant's instructions, to each wearer's face, and the odor of isoamyl-acetate shall not be detectable by any wearer during the test.
(c) Where the respirator is equipped with a full facepiece, hood, helmet, or mouthpiece, the canister or cartridge will be used in place of the filter unit, and persons will each wear the modified respiratory-inlet covering for 5 minutes in a test chamber containing 1,000 parts (by volume) of isoamyl-acetate vapor per million parts of air, performing the work schedule specified in paragraph (b)(2) of this section. § 84.1143 Dust, fume, and mist air-purifying filter tests; performance requirements; general.
Dust, fume, and mist respirators will be tested in accordance with the schedule set forth in Table 13 of this subpart to determine their effectiveness as protection against the particulate hazards specified in Table 13. § 84.1144 Silica dust test for dust, fume, and mist respirators; single-use or reusable filters; minimum requirements.
(a) Three non-powered respirators with single-use filters will be tested for periods of 90 minutes each at a continuous airflow rate of 32 liters per minute.
(b) The relative humidity in the test chamber will be 20–80 percent, and the room temperature approximately 25° C.
(c) The test suspension in the chamber will not be less than 50 nor more than 60 milligrams of flint (99+ percent free silica) per cubic meter of air.
(d) The flint in suspension will be ground to pass 99+ percent through a 270-mesh sieve.
(e) The particle-size distribution of the test suspension will have a geometric mean of 0.4 to 0.6 micrometer, and the standard geometric deviation will not exceed 2.
(f) The total amount of unretained test suspension in samples taken during testing shall not exceed 1.5 milligrams for a non-powered air-purifying respirator.
(g) Three non-powered respirators with reusable filters will be tested and shall meet the requirements specified in paragraphs (a) through (f) of this section; each filter shall be tested three times: Once as received; once after cleaning; and once after recleaning. The applicant's instructions shall be followed for each cleaning. § 84.1145 Silica dust test; non-powered single-use dust respirators; minimum requirements.
(a) Three respirators will be tested.
(b) As described in §84.1144, airflow will be cycled through the respirator by a breathing machine at the rate of 24 respirations per minute with a minute volume of 40 liters; a breathing machine cam with a work rate of 622 kg.-m.2/minute shall be used.
(c) Air exhaled through the respirator will be 35° ±2° C. with 94 ±3 percent relative humidity. #
(d) Air inhaled through the respirator will be sampled and analyzed for respirator leakage.
(e) The total amount of unretained test suspension, after drying, in samples taken during testing, shall not exceed 1.8 milligrams for any single test. § 84.1146 Lead fume test for dust, fume, and mist respirators; minimum requirements.
(a) Three non-powered respirators will be tested for a period of 312 minutes each at a continuous airflow rate of 32 liters per minute.
(b) The relative humidity in the test chamber will be 20–80 percent, and the room temperature approximately 25° C.
(c) The test suspension in the test chamber will not be less than 15 nor more than 20 milligrams of freshly generated lead-oxide fume, calculated as lead (Pb), per cubic meter of air.
(d) The fume will be generated by impinging an oxygen-gas flame on molten lead.
(e) Samples of the test suspension will be taken during each test period for analysis.
(f) The total amount of unretained test suspension in the samples taken during testing, which is analyzed and calculated as lead (Pb), shall not exceed 1.5 milligrams of lead for a non-powered air-purifying respirator. § 84.1147 Silica mist test for dust, fume, and mist respirators; minimum requirements.
(a) Three non-powered respirators will be tested for a period of 312 minutes each at a continuous airflow rate of 32 liters per minute.
(b) The room temperature in the test chamber will be approximately 25°C.
(c) The test suspension in the test chamber will not be less than 20 nor more than 25 milligrams of silica mist, weighed as silica dust, per cubic meter of air.
(d) Mist will be produced by spraying an aqueous suspension of flint (99+ percent free silica), and the flint shall be ground to pass 99+ percent through a 270-mesh sieve.
(e) Samples of the test suspension will be taken during each test period for analysis.
(f) The total amount of silica mist unretained in the samples taken during testing, weighed as silica dust, shall not exceed 2.5 milligrams for a non-powered air-purifying respirator. § 84.1148 Tests for respirators designed for respiratory protection against more than one type of dispersoid; minimum requirements.
Respirators designed as respiratory protection against more than one particulate hazard (dust, fume, or mist) shall comply with all the requirements of this part, with respect to each of the specific hazards involved. § 84.1149 Airflow resistance tests; all dust, fume, and mist respirators; minimum requirements.
(a) Resistance to airflow will be measured in the facepiece, mouthpiece, hood, or helmet of a dust, fume, or mist respirator mounted on a test fixture with air flowing at a continuous rate of 85 liters per minute, both before and after each test conducted in accordance with §§84.1144 through 84.1147.
(b) The maximum allowable resistance requirements for dust, fume, and mist respirators are as follows:
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Maximum Resistance [mm. water-column height]------------------------------------------------------------------------ Initial Final Type of respirator inhalation inhalation Exhalation------------------------------------------------------------------------Pneumoconiosis- and fibrosis- 12 15 15 producing dusts, or dusts and mists...........................Dust, fume, and mist, with single- 30 50 20 use filter......................Dust, fume, and mist, with 20 40 20 reusable filter.................Radon daughter................... 18 \1\ 25 15Asbestos dust and mist........... 18 25 15------------------------------------------------------------------------\1\ Measured after silica dust test described in § 84.1144.
§ 84.1150 Exhalation valve leakage test; minimum requirements.
(a) Dry exhalation valves and valve seats will be subjected to a suction of 25 mm. water-column height while in a normal operating position.
(b) Leakage between the valve and valve seat shall not exceed 30 milliliters per minute. § 84.1151 DOP filter test; respirators designed as respiratory protection against dusts, fumes, and mists having an air contamination level less than 0.05 milligram per cubic meter and against radionuclides; minimum requirements.
(a) All single air-purifying respirator filter units will be tested in an atmosphere concentration of 100 micrograms of DOP per liter of air at continuous flow rates of 32 and 85 liters per minute for a period of 5 to 10 seconds.
(b) Where filters are to be used in pairs, the flow rates will be 16 and 42.5 liters per minute, respectively, through each filter.
(c) The filter will be mounted on a connector in the same manner as used on the respirator, and the total leakage for the connector and filter shall not exceed 0.03 percent of the ambient DOP concentration at either flow rate. § 84.1152 Silica dust loading test; respirators designed as protection against dusts, fumes, and mists having an air contamination level less than 0.05 milligram per cubic meter and against radionuclides; minimum requirements.
(a) Three non-powered respirators will be tested in accordance with the provisions of §84.1144, or equivalent, and shall meet the minimum requirements of §§84.1144 and 84.1149.
(b) Three powered air-purifying respirators will be tested in accordance with the provisions of §84.1144 except they will be tested for a period of 4 hours each at a flowrate not less than 115 liters per minute to tight-fitting facepieces, and not less than 170 liters per minute to loose-fitting hoods and helmets. The total amount of unretained test suspension in samples taken during testing shall not exceed 14.4 milligrams for a powered air-purifying respirator with tight-fitting facepiece, and 21.3 milligrams for a powered air-purifying respirator with loose-fitting hood or helmet. They shall meet the minimum requirements of §84.1149. § 84.1153 Dust, fume, mist, and smoke tests; canister bench tests; gas masks canisters containing filters; minimum requirements.
(a) Gas mask canisters containing filters for protection against dusts, fumes, mists, and smokes in combination with gases, vapors, or gases and vapors, will be tested as prescribed in §84.1140 except for the breathing resistance which will be in accordance with §84.122.
(b) Gas mask canisters designed for protection against smokes will be tested in an atmospheric concentration of 100 micrograms of dioctyl phthalate per liter of air at continuous flow rates of 32 liters per minute and 85 liters per minute for a period of 5 to 10 seconds, and the DOP leakage through the canister shall not exceed 0.03 percent of the test concentration.
(c) Gas mask canisters containing filters for protection against dusts, fumes, mists, and smokes in combination with gases, vapors, or gases and vapors, will be tested as prescribed in §84.126. § 84.1154 Canister and cartridge requirements.
(a) Where two or more canisters or cartridges are used in parallel, their resistance to airflow shall be essentially equal.
(b) The color and markings of all canisters and cartridges or labels shall conform with the requirements of the American National Standards Institute, American National Standard for Identification of Air-Purifying Respirator Canisters and Cartridges, ANSI K13.1–1973. ANSI K13.1 is incorporated by reference and has been approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from American National Standards Institute, Inc., 1430 Broadway, New York, NY 10018. Copies may be inspected at the NIOSH, Certification and Quality Assurance Branch, 1095 Willowdale Road, Morgantown, WV 26505–2888, or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202–741–6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.php. § 84.1155 Filters used with canisters and cartridges; location; replacement.
(a) Particulate matter filters used in conjunction with a canister or cartridge shall be located on the inlet side of the canister or cartridge.
(b) Filters shall be incorporated into or firmly attached to the canister or cartridge and each filter assembly shall, where applicable, be designed to permit its easy removal from and replacement on the canister or cartridge. § 84.1156 Pesticide respirators; performance requirements; general.
Pesticide respirators and the individual components of each such device shall, as appropriate, meet the following minimum requirements for performance and protection:
(a) Breathing resistance test. (1) Airflow resistance will be measured in the facepiece, mouthpiece, hood, or helmet of a pesticide respirator mounted on a test fixture with air flowing at a continuous rate of 85 liters per minute, both before and after each test conducted in accordance with paragraphs (c) and (f) of this section.
(2) The maximum allowable resistance requirements for pesticide respirators are as follows:
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Maximum Resistance [mm. water-column height]------------------------------------------------------------------------ Inhalation Type of pesticide respirator -------------------------- Exhalation Initial Final \1\------------------------------------------------------------------------Front- or back-mounted gas mask.. 70 85 20Chin-style gas mask.............. 65 80 20Powered air-purifying \2\........ \2\ 50 \2\ 70 20Chemical Cartridge............... 50 70 20------------------------------------------------------------------------\1\ Measured at end of the service life specified in Table 14 of this subpart.\2\ Resistance of filter(s), cartridge(s), and breathing tube(s) only with blower not operating.
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(b) Facepiece test. (1) The complete pesticide respirator will be fitted to the faces of persons having varying facial shapes and sizes.
(2) Where the applicant specifies a facepiece size or sizes for his respirator together with the approximate measurements of faces they are designed to fit, the Institute will provide test subjects to suit such facial measurements.
(3) Any pesticide respirator part which must be removed to perform the facepiece fit test shall be replaceable without special tools and without disturbing facepiece fit.
(4) The facepiece or mouthpiece fit test using positive or negative pressure recommended by the applicant and described in his instructions will be used during each test.
(5)(i) Each wearer will enter a chamber containing 1,000 p.p.m. isoamyl-acetate vapor for a respirator equipped with a full facepiece, mouthpiece, hood, or helmet and 100 p.p.m. isoamyl-acetate vapor for a respirator equipped with a half-mask facepiece.
(ii) The facepiece, mouthpiece, hood, or helmet may be adjusted, if necessary, in the test chamber before starting the test.
(iii) Each wearer will remain in the chamber while performing the following activities:
(A) Two minutes, nodding and turning head;
(B) Two minutes, calisthenic arm movements;
(C) Two minutes, running in place; and
(D) Two minutes, pumping with a tire pump into a 28-liter (1 cubic foot) container.
(iv) Each wearer shall not detect the odor of isoamyl-acetate during the test.
(c) Silica dust test. Three completely assembled pesticide respirators will be tested with a mechanical-testing apparatus as follows:
(1) Temperature in the test chamber will be approximately 25° C.
(2) Continuous airflow through the respirator will be 32 liters per minute for front-mounted, back-mounted, and chin-style gas mask pesticide respirators and chemical cartridge pesticide respirators, and not less than 115 (4 cubic feet) liters per minute to tight-fitting facepieces and 170 liters (6 cubic feet) per minute to loose-fitting hoods and helmets of powered air-purifying respirators.
(3) The test aerosol will contain 50–60 milligrams of 99+ percent free silica per cubic meter of air.
(4) The particle size distribution of the test suspension will have a geometric mean diameter of 0.4 to 0.6 micrometer, with a standard geometric deviation less than 2.
(5) Front-mounted, back-mounted, and chin-style gas mask pesticide respirators and chemical cartridge pesticide respirators will be tested for 90 minutes and powered air-purifying respirators will be tested for 4 hours.
(d) Lead fume test. Three completely assembled pesticide respirators will be tested with a mechanical-testing apparatus as follows:
(1) Continuous airflow through the respirator will be 32 liters per minute for front-mounted, back-mounted, and chin-style gas mask pesticide respirators and chemical cartridge pesticide respirators and not less than 115 liters (4 cubic feet) per minute, for powered air-purifying respirators with tight-fitting facepieces, and not less than 170 liters (6 cubic feet) per minute for powered air-purifying respirators with loose-fitting hoods and helmets.
(2) The test aerosol will contain 15–20 milligrams of freshly generated lead-oxide fume, calculated as lead, per cubic meter of air.
(3) The fume will be generated by impinging an oxygen-gas flame on molten lead.
(4) Front-mounted, back-mounted, and chin-style gas mask pesticide respirators and chemical cartridge pesticide respirators will be tested for 90 minutes and powered air-purifying pesticide respirators will be tested for 4 hours.
(5) The total amount of unretained test suspension, which is analyzed and calculated as lead, shall not exceed:
(i) 0.43 milligram for any 90-minute test;
(ii) 4.8 milligrams for any 4-hour test made at 115 liters (4 cubic feet) per minute; or
(iii) 6.2 milligrams for any 4-hour test made at 170 liters (6 cubic feet) per minute.
(e) Dioctyl-phthalate test. (1) All canisters submitted for use with front-mounted and back-mounted gas mask pesticide respirators will be tested in an atmospheric concentration of 100 micrograms of dioctyl-phthalate per liter of air at continuous flow rates of 32 and 85 liters per minute for a test period of 5 to 10 seconds.
(2) The DOP leakage through the canister shall not exceed 0.03 percent of the ambient DOP concentration.
(f) Bench tests for pesticide respirators. (1)(i) Bench tests will be made on an apparatus that allows the test atmosphere at 50 ±5 percent relative humidity and at room temperature (25°±2.5° C.) to enter the canister or cartridge at predetermined concentrations and rates of flow, and that has a means for determining the test life of the canister or cartridge against carbon tetrachloride.
(ii) Canisters and cartridges will be tested as they are used on each pesticide respirator, either singly or in pairs.
(iii) Three canisters or cartridges or pairs of cartridges will be removed from containers and tested as received from the applicant.
(iv) Two canisters, cartridges, or pairs of cartridges will be equilibrated at room temperature by passing 25 percent relative humidity air through them at the following flow rates (expressed as liters per minute (l.p.m.)) for 6 hours:
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------------------------------------------------------------------------ Airflow Type of canister or cartridge rate, l.p.m.------------------------------------------------------------------------Air-purifying canister....................................... 64Air-purifying cartridge...................................... 25Powered air-purifying with tight-fitting facepiece........... 115Powered air-purifying with loose-fitting hood or helmet...... 170------------------------------------------------------------------------
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(v) Two canisters, cartridges, or pairs of cartridges will be equilibrated at room temperature by passing 85 percent relative humidity air through them at the flow rates stated in paragraph (f)(1)(iv) of this section for 6 hours.
(vi) The equilibrated canisters or cartridges will be resealed, kept in an upright position at room temperature, and tested within 18 hours.
(2) Canisters and cartridges tested in accordance with the provisions of this section shall meet the requirements specified in Table 14 of this subpart. § 84.1157 Chemical cartridge respirators with particulate filters; performance requirements; general.
Chemical cartridge respirators with particulate filters and the individual components of each such device shall, as appropriate, meet the following minimum requirements for performance and protection:
(a) Breathing resistance test. (1) Resistance to airflow will be measured in the facepiece, mouthpiece, hood, or helmet of a chemical cartridge respirator mounted on a test fixture with air flowing at a continuous rate of 85 liters per minute, both before and after each test conducted in accordance with paragraphs (d) through (f) of this section.
(2) The maximum allowable resistance requirements for chemical cartridge respirators are as follows:
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Maximum Resistance [mm. water-column height]------------------------------------------------------------------------ Inhalation Type of chemical cartridge -------------------------- Exhalation respirator Initial Final \1\------------------------------------------------------------------------For gases, vapors, or gases and 50 70 20 vapors, and dusts, fumes, and mists...........................For gases, vapors, or gases and 50 70 20 vapors, and mists of paints, lacquers, and enamels...........------------------------------------------------------------------------\1\ Measured at end of service life specified in Table 11 in subpart L of this part.
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(b) Facepiece test. The facepiece test will be conducted as specified in §84.205.
(c) Lacquer and enamel mist tests; general. (1) Three respirators with cartridges containing or having attached to them, filters for protection against mists of paints, lacquers, and enamels shall be tested in accordance with the provisions of paragraph (f) of this section.
(2) In addition to the test requirements set forth in paragraph (c)(1) of this section, three such respirators will be tested against each aerosol in accordance with the provisions of paragraphs (d) and (e) of this section.
(d) Lacquer mist test. (1) Temperature in the test chamber will be approximately 25° C.
(2) Continuous airflow through the respirator will be 32 liters per minute for air-purifying respirators, and not less than 115 liters per minute to tight fitting facepieces and 170 liters per minute to loose-fitting hoods and helmets of powered air-purifying respirators.
(3) Airflow through the chamber will be 20–25 air changes per minute.
(4) The atomizer employed will be a No. 64–5 nozzle with setup 3, or equivalent, operating at 69 kN/m.2 (10 pounds per square inch gage).
(5) The test aerosol will be prepared by atomizing a mixture of one volume of clear cellulose nitrate lacquer and one volume of lacquer thinner. The lacquer described in Federal Specification TT-L-31, October 7, 1953, is an example of an acceptable lacquer. Copies of TT-L-31 may be inspected or obtained from the NIOSH, Certification and Quality Assurance Branch, 1095 Willowdale Road, Morgantown, WV 26505–2888.
(6) The concentration of cellulose nitrate in the test aerosol will be 95–125 milligrams per cubic meter.
(7) The test aerosol will be drawn to each respirator for a total of 156 minutes for air-purifying respirators and 240 minutes for powered air-purifying respirators.
(8) The total amount of unretained mist in the samples taken during testing, weighed as cellulose nitrate, shall not exceed 5 milligrams for an air-purifying respirator, 28 milligrams for a powered air-purifying respirator with tight-fitting facepiece, and 41 milligrams for a powered air-purifying respirator with loose-fitting hood or helmet.
(e) Enamel mist test. (1) Temperature in the test chamber will be approximately 25° C.
(2) Continuous airflow through the respirator will be 32 liters per minute for air-purifying respirators, and not less than 115 liters per minute to tight-fitting facepieces and 170 liters per minute to loose-fitting hoods and helmets of powered air-purifying respirators.
(3) Airflow through the chamber will be 20–25 air changes per minute.
(4) The atomizer employed will be a No. 64 nozzle with setup 1A, or equivalent, operating at 69 kN/m.2 (10 pounds per square inch gage).
(5) The test aerosol will be prepared by atomizing a mixture of 1 volume of white enamel and 1 volume of turpentine. The enamel described in Federal Specification TT-E–489b, May 12, 1953, with amendment-1 of 9 November 1955 is an example of an acceptable enamel. Copies of TT-E–489b may be inspected or obtained from the NIOSH, Certification and Quality Assurance Branch, 1095 Willowdale Road, Morgantown, WV 26505–2888.
(6) The concentration of pigment in the test aerosol, weighed as ash, will be 95–125 milligrams per cubic meter.
(7) The test aerosol will be drawn to each respirator for a total of 156 minutes for air-purifying respirators and 240 minutes for power air-purifying respirators.
(8) The total amount of unretained mist in the samples taken during testing, weighed as ash, shall not exceed 1.5 milligrams for any air-purifying respirator, 8.3 milligrams for a powered air-purifying respirator with tight-fitting facepiece, and 12.3 milligrams for a powered air-purifying respirator with loose-fitting hood or helmet.
(f) Bench tests; gas and vapor tests. (1) Bench tests will be made in accordance with §84.207 and tested cartridges shall meet the minimum requirements set forth in Table 11 of subpart L of this part. Cartridges will be equilibrated in accordance with paragraph (f)(2) of this section.
(2)(i) Two powered air-purifying cartridges or pairs of cartridges will be equilibrated at room temperature by passing 25 percent relative humidity air through them at the following flow rates (expressed in liters per minute (l.p.m.)) for 6 hours:
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------------------------------------------------------------------------ Airflow Type of cartridge rate, l.p.m.------------------------------------------------------------------------Powered air purifying with tight-fitting facepiece........... 115Powered air purifying with loose-fitting hood or helmet...... 170------------------------------------------------------------------------
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(ii) Two powered air-purifying cartridges or pairs of cartridges will be equilibrated by passing 85 percent relative humidity air through them at the flow rates stated in paragraph (f)(2)(i) of this section.
(iii) All cartridges will be resealed, kept in an upright position, at room temperatures, and tested within 18 hours. § 84.1158 Dust, fume, and mist tests; respirators with filters; minimum requirements; general.
(a) Three respirators with cartridges containing, or having attached to them, filters for protection against dusts, fumes, and mists, except the mists of paints, lacquers, and enamels, will be tested in accordance with the provisions of §84.1157(f).
(b) In addition to the test requirements set forth in paragraph (a) of this section, three such respirators will be tested, as appropriate, in accordance with the provisions of §§84.1141 through 84.1152; however, the maximum allowable resistance of complete dust, fume, and mist, and gas, vapor, or gas and vapor chemical cartridge respirators shall not exceed the maximum allowable limits set forth in §84.1157(a)(2). Tables to Subpart KK of Part 84
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Table 12_Facepiece Test Requirements [42 CFR Part 84, Subpart KK]------------------------------------------------------------------------ Pressure Isoamyl acetate test Respirator types tightness --------------------------- test \1\ 84.1141 84.1142------------------------------------------------------------------------Dusts: Air Contamination Level X not less than 0.05 mg/M\3\ or 2 mppcf......................Fumes: Air Contamination Level X X not less than 0.05 mg/M\3\...Mists: Air Contamination Level X not less than 0.05 mg/M\3\ or 2 mppcf......................Dusts, Fumes, and Mists: Air X ............ X Contamination Level less than 0.05 mg/M\3\ or 2 mppcf, and radionuclides................Radon daughters............... X XAsbestos-containing dusts and X mists........................------------------------------------------------------------------------\1\ Test is required only where applicable.
Table 13_Air-Purifying and Powered Air-Purifying Respirator Filter Tests Required for Approval [42 CFR Part 84, Subpart KK]---------------------------------------------------------------------------------------------------------------- Silica dust tests Respirator types ------------------------------------------ Lead fume Silica mist DOP test 84.1144 84.1145 84.1152 test 84.1146 test 84.1147 84.1151----------------------------------------------------------------------------------------------------------------Dusts: Air Contamination X Level not less than 0.05 mg/ M\3\ or 2 mppcf............Fumes: Air Contamination ............ ............ ............ X Level not less than 0.05 mg/ M\3\.......................Mists: Air Contamination ............ ............ ............ ............ X Level not less than 0.05 mg/ M\3\ or 2 mppcf............Dusts, Fumes, and Mists: Air ............ ............ X ............ ............ X Contamination Level less than 0.05 mg/M\3\ or 2 mppcf, and radionuclides...Radon daughters............. \1\ X ............ ............ ............ \2\ XAsbestos-containing dusts \2\ X ............ ............ ............ \3\ X and mists..................Single use dust and mist ............ \3\ X ............ ............ \3\ X respirators................----------------------------------------------------------------------------------------------------------------\1\ For resistance only.\2\ For penetration only.\3\ Test required only where applicable.
Table 14_Carbon Tetrachloride Bench Tests and Requirements for Canisters and Cartridges [42 CFR part 84, Subpart KK]---------------------------------------------------------------------------------------------------------------- Test Minimum Type of pesticide respirator concentration Flow rate Number of life p.p.m. CCl4 l.p.m. tests minutes\1\----------------------------------------------------------------------------------------------------------------Chest-mounted or back-mounted gas mask (as received)...... 20,000 64 3 12Chest-mounted or back-mounted gas mask (equilibrated)..... 20,000 32 4 12Chin-style gas mask (as received)......................... 5,000 64 3 12Chin-style gas mask (equilibrated)........................ 5,000 32 4 12Chemical Cartridge respirator (as received)............... 1,000 64 3 50Chemical cartridge respirator (equilibrated).............. 1,000 32 4 50Powered air-purifying respirator (tight-fitting facepiece, 1,000 \2\ 115 3 50 as received).............................................Powered air-purifying respirator (tight-fitting facepiece, 1,000 \2\ 115 4 25 equilibrated)............................................Powered air-purifying respirator (loose-fitting hood or 1,000 \3\ 170 3 50 helmet, as received).....................................Powered air-purifying respirator (loose-fitting hood or 1,000 \3\ 170 4 25 helmet, equilibrated)....................................----------------------------------------------------------------------------------------------------------------\1\ Minimum life will be determined at 5 p.p.m. leakage.\2\ The flow rate shall be the effective flow rate of the device, but shall be not less than 115 l.p.m.\3\ The flow rate shall be the effective flow rate of the device, but shall be not less than 170 l.p.m.
