Document YGJ9XBgZzzYYMkDv10z8ygyBy

OFFICE MDtO BROWN ROOT, INC TO: FROM: SUBJECT: Safety Supervisors Fred J. Salmon Respiratory Protection DATE: January 14, 1976 The attached guidelines are for you to use in complying with the OSEA standards in recordkeeping and maintaining of its respiratory protection. Zf you have any questions regarding this, please call Carl D. Richardson at (713) 676-3781. FJS:bg Attachment JAN?" 1976 BROWN ROOT, INC RESPIRATOR PROTECTION PROGRAM - INDEX I. PURPOSE II. GENERAL III. APPROVED RESPIRATORS IV. USE AND LIMITATIONS V. SELECTION VI. PRECAUTIONS VII. RESPIRATOR CARE VIII. TRAINING IX. AIR QUALITY X. RESPIRATORY PROGRAM FOR SANDBLASTING OPERATIONS XI. RESPIRATORY PROGRAM FOR WELDING OPERATIONS XII. RESPIRATORY PROGRAM FOR SPRAY PAINTING OPERATIONS APPENDIX A - NIOSH/MESA Certified Respirator* APPENDIX B - Forma APPENDIX C - Definitions PAGE NO I 1 1 2 3 4 S 8 8 14 16 19 29 55 58 LIST OF TABLES TABLE I ( A, B, C) Method of Operation. Use and Limitations of Respirators TABLE II Guide for the Selection of Respirators TABLE III Color Code for Gas Mask Canisters TABLE IV Breathing Air Requirements PAGE NO. 21 36 27 28 RESPIRATORY PROTECTION PROGRAM PURPOSE A. This program provides the procedures for proper selection, use and care of respiratory equipment. The adherence to this program will provide maximum protection to the employee and will meet the respiratory protection requirements of the Occupational Safety and Health Act of 1971. B. This program shall not be used as a substitute for generally accepted engineering control measures against air contaminants GENERAL A. Respirators shall be worn at all times where work is nec essary in contaminated or oxygen deficient areas. B. The employee shall use the provided respiratory protection in accordance with instructions and training received. C. Persons shall not be assigned to tasks requiring use of respirators unless it has been determined that they are physically able to perform the work when utilizing the equipment. Brown t Root's pre-employment physical will give sufficient information to make this evaluation. APPROVED RESPIRATORS A. In order to assure the maximum amount of respiratory protection, NIOSH/MESA certified respirators shall be used. (Appendix A) B. Certified respirators shall only be used for the purpose for which they were originally intended and shall not be nodified in any way. C. Respirators purchased on or before September 30, 1974 and meeting the Bureau of Mines Schedules are approved for use until the following dates: TYPE OF RESPIRATOR SELF-CONTAINED GAS MASK SUPPLIED AIR DUST, FUMES, MIST CHEMICAL CARTRIDGE TERM!HAL CSE DATE March 31, 1979 March 31, 1977 March 31, 1980 March 31, 1976 March 31, 1976 0. Respirators purchased after June 30, 1975, shall meet the requirements of Chapter 1, Title 30, Code of federal Regulations Part II (Appendix A). E. A general listing of the several types of respiratory protective equipment along with methods of operation, use and limitations is given in Table I. TV. USE AMD LIMITATIONS A. The air-purifying respirators (Table le) shall not be used for rescue work, or for emergency work of any nature. Reasons for this requirement are that: 1. These respirators do not supply oxygen and therefore do not protect against possible oxygen deficiencies. 2. Gas masks are intended for use with no more than 2% by volume of most toxic gases. 3. Chemical cartridges respirators are intended for use in a toxic gas range having from 0.0S per cent to 0.1 per cent maximum. B. Canisters and cartridges shall be specifically selected for the toxic gas and concentration to be encountered. Canister Basics that bear the label "All-Serviee*, "All- Purpose*, "Universal' or similar notations shall not be used. Refer to Table 3 for gas canister coding and selection. SELECTION A. In selecting a respirator, the following factors shall be considered: 1. Nature of the hazard. 2. Extent of the hazard. 3. Contaminant(s) present. 4. Concentration of the contaminant(s) 5. Characteristics and limitations of the available respirators. 6. Expected activity of the worker. B. Tables 1 t 2 shall be considered in selecting a respirator C. Units rated for at least 30-minutes service time shall be used for entry into an irrespirable atmospheres. D. Fifteen-minute units shall be used only for emergency egress and not for rescue work or re-entry. E. Only the following respiratory protective apparatus shall . be used in oxygen-deficient atmospheres or where the con taminant is, or might be immediately dangerous to life: 1. Self-contained breathing apparatus 2. Combination air-line respirator and self-contained breathing appratus, or 3. Hose mask with blower. F. Self-contained breathing apparatus shall have a "remaining service-life" indicator or warning for com pressed breathing air (except for self rescue}. G. When the device is a combination self-contained breathing apparatus and air-line respirator, either a manual or automatic valve shall be provided to change to the selfcontained air supply if the air line supply fails. N. All employee's in areas where the contaminant levels are expected to be higher than the level designated for an air-purify respirator, will be provided with an air-line respirator. PRECAUTIONS A. Some precautions are given in Table I under "Limitations". An extensive list of instructions in use and precautions for each type of respirator is given in ANSI Z88.2, Practices for Respiratory Protection. B. An effective seal between the facepiece and face to prevent inward leakage must be obtained. Air-purifying respirators along with demand-type respirators operate under negative pressure when the wearer inhales, thus some inward leakage of contaminant may be possible. C. If the temple bars of eye glasses extend through the sealing edge of full-face masks, a proper seal cannot be obtained. 1. Glasses with short temple bars or without temple bars may be taped to the wearer's head. Full-face masks have been developed with systems for mounting 5 corrective lenses inside the facepiece. 2. The wearer's use of spectacles or 909910s should not interfere with a half-mask facepiece. . 0. A heavy beard or sidebum may interfere with obtaining a proper seal. Where the use of respirators is required, restrictions on facial hair shall- be established. E. Respirators usually provide a satisfactory pathway for speech transmission over short distances in relatively quiet areas. An alternate form of communication between workers shall be established where respirators are used in noisy areas. F. To prevent face pieces from fogging up in low temperatures, anti-fog compounds should be used to coat the inside of the eyepiece. G. Hoses for air supply should be selected to resist chemicals to which they may be exposed. H. Pure oxygen shall not be used in supplied-air respirators. 1. Although self-contained breathing apparatus have no con centration limit, many toxic gases t vapors are flammable. Working in or near the flammable range of a gas or vapor is prohibited. Brown t Root, Inc. Hazardous Tank Entry procedures shall be observed. VII. RESPIRATOR CARE A. A centralized maintenance, cleaning and storage station shall be used to care for respiratory protective equipment. B. Procedures applicable to all respirators: 1. INSPECTION: a) All air-purifying raspiratori in utt shall be inspected and recorded on a weekly basis (Fora A). b) Self-contained breathing apparatus shall be inspected and recorded monthly. This is to be done before each use and during periods of storage. 2. MAINTENANCE: a) Whan replacing worn or deteriorated parts, only those made specifically for the device shall be used; and the repair work shall be recorded (Fora A). b) A record should be kept on maintenance of air-purifying filters including dates of filter media replacement (Fora B). 3. CLEANING AND DISINFECTING: a) Respirators issued for the exclusive use of one worker should be cleaned after each day's use, or more often if necessary. Those used by more than one worker shall be thoroughly cleaned and disinfected after each use. 4. STORAGE a) Respirators shall be stored in a convenient, clean, and sanitary location; preferably the carton in which it came in or protective plastic bags. C. Special procedures for maintaining, cleaning, disinfecting and storing respirators: 1. Self-contained breathing apparatus Cylinder pressure should be checked at least monthly and brought to rated pressure if necessary. SCBA shall be recharged after each use. 2. Hose masks Check the blower at least monthly for proper operation. Check hose wear and tear after each use and steam clean when necessary. Keep hose capped when not in use to prevent entrance of contaminants. 3. Air-line respirators The complete system should be checked after each use. 4. Self-rescuers Frequent inspection is the most important phase of the maintenance program with this type of equipment, for it must always be ready even though seldom used. 5. Chemical cartridge respirators Cartridges shall be changed when the wearer detects an odor or the irritating effect of the contaminant. Where they expected contaminant has no odor or irritating effect, (e.g. carbon monoxide) a new cartridge shall be installed in the respirator at the start of each day of use. In most cases the wearer is responsible for discarding and replacing cartridges in his respirator. Respirators issued to individuals should be marked with the individuals name or badge number. 6. Mechanical filter respirators Filters of the "throw-away" type should be discarded when the breathing resistance becomes bothersome to the wearer. Some mechanical filter respirators use recleanable filters, in which case the filters are cleaned at the same time the respirator is being serviced. VIII. TRAINING A. The worker shall be instructed and trained in the proper use of respirators and their limitations. For safe use of any respirator, it is essential that the worker be properly instructed in its selection, use and maintenance. B. Every respirator wearer shall receive fitting instructions including demonstrations and practice in how the respirator shall be worn and how to determine if it fits properly. C. A record of this training shall be kept in the "safety meeting log" file. IX. AIR QUALITY A. Air supply and air compressors for abrasive-blasting respirators 1. Air supply shall be free of harmful quantities of dust, mists or noxious gases (Table 4) . 2. The air from the regular compressed air line of the plant or compressor units may be used for the abrasive-blasting respirator if: a) A trap and carbon filter is installed that will remove oil, water, particulates and odor and is regularly maintained. A record of the maintenance of these filters should be kept (Form B). b) A pressure reducing diaphragm or valve is installed to reduce the pressure to requirements of the particular type of abrasive blasting respirator. c) An automatic control is provided to either sound an alarm or shut down the compressor in case of overheating. d) Periodic checks should be made to determine if low amounts of carbon monoxide is being emitted to the worker. (CO tubes and/or CO badges could be utilized here) B. Air supply and air compressors for other air supplied respirators 1. Air supply shall be free of harmful quantities of contaminants (Table 4). 2. Compressed oxygen shall not be used in supplied-air respirators or in open circuit self-contained breathing apparatus that have previously used compressed air. Oxygen must never be used with air-line respirators. 10 3. Breathing air may be supplied to respirators from cylinders or air compressors. 4. The compressor that is supplying the air shall be equipped with necessary safety and standby devices. A breathing-air type compressor shall be used. Compressors shall be constructed and situated so as to avoid entry of contaminated air into the system. Suitable in-line air purifying sorbent beds and filters aha11 be installed to further assure breathing air quality. A reciever of sufficient capacity shall be installed in the system enabling the respirator wearer to escape from a contaminated atmosphere in the event of compressor failure. An alarm shall also be installed to indicate imminent compressor failure and/or over-heating. Zf an oil-lubricated compressor is used, it shall have a high-temperature or carbon monoxide alarm to Insure that the air supply meets the specifications in Table 4 . 5. Caution shall be taken when connecting to plant air line systems with an inert gas back up system (e.g. Nitrogen). If this is the case, then the plant compressed air system shall not be used for breathing or for the ventilation of confined spaces. C. Air receivers 1. General requirements a) Application. This sub-section applies to compressed air receivers, and other equipment used in providing and utilizing compressed air for performing operationa auch as cleaning, drilling, hoisting, and chipping. However, it will not deal with the special problems created by using compressed air to convey materials nor the problems created when men work in compressed air sueh as tunnels and caissons. Further, this sub-section is not intended to apply to compressed air machinery and equipment used on transportation vehicles such as steam railroad cars, electric railway cars, and automotive equipment, b) New and existing equipment (i) All new air receivers installed after the effective date of these regulations shall be constructed in accordance with the 1968 edition of the A.S.M.E. Boiler and Pressure Vessel Code Section VIII. (ii) All safety valves used shall be con structed, installed, and maintained in accordance with the A.S.M.E. Boiler and Pressure Vessel Code, Section VIII Edition 1968. Installation and equipment requirements a) Installation. Air receivers shall be so in stalled that all drains, handholes and manholes therein are easily accessible. Air receivers should be supported with sufficient clearance to permit a complete external inspection and to avoid corrosion of external surfaces. Under no circumstances shall an air receiver be buried underground or located in an inaccessible place. The receiver should be located as close to the compressor or aftercooler as is possible in order to keep the discharge pipe short. b) Drains and traps A drain pipe and valve shall be installed at the lowest point of every air receiver to provide for the removal of accumulated oil and water. Adequate automatic traps may be in stalled in addition to drain valves. The drain valve on the air receiver shall be opened frequently in order that the air receiver can be completely drained to prevent the accumulation of excessive amounts of liquid in the receiver. c) Gages and valves (i) Every air receiver shall be equipped with an indicating pressure gage readily visible and with one or more spring-loaded safety valves. The total relieving capacity of such safety valves shall be such as to prevent pressure in the receiver from exceeding the maximum allowable working pressure of the receiver by no more than 10 percent. (ii) No valve of ary type shall be placed between the air receiver and its safety valves. (iii) Safety appliances, such as safety valves, indicating devices and controling devices, shall be constructed, located, and installed so that they cannot be readily rendered inoerative by any naans, including the eleaents. (iv) All safety valves shall be tested frequently and at regular intervals to determine whether they are in good operating condition. BROWN t ROOT, INC. RESPIRATORY PROTECTION PROGRAM FOR SANDBLASTING OPERATIONS Only certified respiratory protective equipment shall be used for protection of personnel against dust produced during abrasive-blasting operations. (Appendix A) Abrasive-blasting respirators shall be worn by all abrasive- blasting operators: 1. When working inside of blast-clean toons, 2. When using silica sand in manual blasting operations where the nozzle and blast are not physically separated from the operator in an exhaust ventilated enclosure, 3. Where concentrations of toxic dust dispersed by the abrasive blasting may exceed the limits set in paragraph 1919.93 OSHA and the nozzle and blast are not physically separated from the operator in an exhaust-ventilated enclosure. Particulate filter respirators, commonly referred to as dust-filter respirators, properly fitted, may be used for short, intermittent, or occasional dust exposure such as clean-up, dumping of dust collectors, or unloading shipments of sand at a receiving point, when it is not feasible to control the dust by enclosure, exhaust ventilation, or other means. Respirators used shall be certified for protection against the specific type of dust. 1. Dust-filter respirators may be used to protect the operator of outside abrasive-blasting operations where non-silica 15 abrasives arc used on materials having low toxieities. 2. Dust-filter respirators shall not be used for contiriuous protection where silica sand is used as the blasting abrasive, or toxic materials are blasted. D. Operators shall be equipped with heavy canvas or leather gloves and aprons or equivalent protection to protect then from the impact of abrasives. Safety shoes shall be worn to protect against foot injury where heavy pieces or work are handled. 1. Equipment for the protection of the eyes and face shall be supplied to the operator when the respirator design does not provide such protection and to any other personnel working in the vicinity of abrasive-blasting operations. E. Air supply and Air Compressors. Refer to part IX Air Quality. r. Respirator care shall be same as set forth in part VII. G. Training shall be same as set forth in part VIII. K. All sandblasting areas shall be so designated by barricades and signs stating it is a danger area and that respiratory and hearing protection must be worn by all employees. BROWN & ROOT, INC. RESPIRATORY PROTECTION PROGRAM FOR WELDING OPERATIONS General welding, cutting, and heating 1. Welding, cutting and heating, not Involving confined spaces or metals of toxic significance aay normally be done with out mechanical ventiletion or respiratory protective equip ment. But where, because of unusual physical or atmosphere conditions, an unsafe accumulation of contaminant* exist, suitable mechanical ventilation or respiratory protective equipment shall be provided and used. 2. Employees performing any type of welding, cutting or heating shall be protected by suitable eye protective equipment. Welding, cutting and heating in confined spaces 1. General mechanical or local exhaust ventilation shall be provided wherever welding, cutting or heating is performed in a confined space. 2. When sufficient ventilation cannot be obtained without blocking the means of acess, employees in the confined space shall be protected by air line respirators. (Note Section IX for Air Quality). An employee on the outside shall be assigned to maintain communications with those working within it and to aid them in an emergency. Welding, cutting or heating of metals of toxic significance 1. Welding, cutting or heating in any enclosed spaces involving the metals specified below shall be performed with either general mechanical or local exhaust ventilation. a) Zinc-bearing base or filler material* or metal* coated with zinc-bearing materials. b) Lead base metals. c) Cadmium-bearing filler materials d) Chromium-bearing metals or metals coated with chromium- bearing metals. 2 welding, cutting or heating in any enclosed spaces involving the metals specified below shall be performed with local exhaust ventilation or employees shall be protected by air line respirators. a) Metals containing lead, other than as an impurity, or metals coated with lead-bearing materials. b) Cadmium-bearing or cadmium coated base metals c) Metals coated with mercury-bearing metals d) Beryllium-containing base or filler metals. Because of its high toxicity, work involving beryllium shall be done with both local exhaust ventilation and air line respirators. 3. Welding, cutting or heating of metals of toxic significance in the open air shall be protected by filter-type respirators.. Such operations on beryllium in the open air shall have air line respiratory protection available. 4. Other employees exposed to the same atmosphere as the welders or burners shall be protected in the same manner as the welder or burner. Inert-gas metal-arc welding 1. Inert-gas metal-arc welding processes involve the production of ultraviolet radiation of intensities of $ to 30 times that produced during shielded metal-are welding. These ultra violet rays decompose chlorinated solvents and liberate toxic fumes and gases. The use of chlorinated solvents shall be kept at least 200 feet, unless shielded, from the exposed arc, and surfaces prepared with chlorinated solvents shall be thoroughly dry before welding is permitted on such surfaces. 2. When inert-gas metal-arc welding is being performed on stainless steel the requirements of section C-2 of this program shall be met to protect against dangerous concentrations of nitrogen dioxide. Welding, cutting and heating in way of preservative coatings 1. Before welding, cutting or heating is cossnenced on any surface covered by a preservative coating whose flammability is not known, a test shall be made to determine its flammability. 2. Protection against toxic preservative coatings. a) In enclosed spaces, all surfaces covered with toxic preservatives shall be stripped of all toxic coatings for a distance of at least four inches from the area of heat application, or the employee shall be protected by air-line respirators. b) In open air, employees shall be protected by a respirator. Respirator care and training - (Note Sections XII s XIII in the General Respiratory Protection Program) BROWN 6 ROOT, INC. RESPIRATORY PROTECTION PROGRAM FOR SPRAY PAINTING OPERATIONS When health hazardous substances need In spray coating are in a combination of particulate Batter and gates or vapors, the res piratory protector shall contain both a aechanieal filter and an absorbent or adsorbent. 1. All employees spray painting in areas where the contaminant concentrations are expected to be extreaely high, shall be provided with an air-line respirator or a fresh air hood. 2. Any employee who enters or works in a spray painting area shall wear appropriate respiratory protection. Spray booths - should comply with Federal Register 1910.107 (b) regulations. Respiratory protection shall be maintained in a sanitary condition. The filtering and the absorbent or adsorbent materials shall be . changed as often as necessary to provide the wearer with adequate protection. Where spraying is done in room booths, in open shops, or in the open, the employer should provide non drying oil or grease for the workers for the purpose of anointing exposed parts of the body during spraying operations. The health of persons doing spray coating may be injured by in haling such substances as lead; poisonous solvents, especially benzol; or finely divided siliceous materials. To render complete protection to spray operators from these hazards they should be given a thorough physical examination to determine if this type of work would hamper the workers health or if the worker can or cannot wear respiratory equipment. r. Care, training and air quality refer to The Ceneral Respiratory Protection Program, sections XXI, XXXI, XX respectively. BROWN ( ROOT, INC. TABLE I - A METHOD OF OPERATION, USE, AND LIMITATIONS OF SELF - CONTAINED TYPE RESPIRATORS *1 Recirculating Demand Type Pressure Demand Type Method of Operation Exhaled water vapor Air from high pressure Air from high pressure reacts with chemical cylinders supplied to cylinders supplied to face releasing and facepiece only on piece on inhalation and removing CO^ The inhalation. Breath maintains a positive pressure wearer inhales through exhaled to atmosphere. in the facepiece. a breathing bag. Use <r Not approved for use on job sites. Under conditions not Required under conditions immediately dangerous iaanediately dangerous to life. to. life because it is apt to permit inward leakage of contaminants Limitations Not approved for use on job sites. Danger of inward No contaminant or 0^ leakage of contaminant deficiency limitations. into facepiece. Heavy Heavy and cumbersome. and cumbersome. BROW i ROOT, INC. TABLE I - B METHOD OF OPERATION, USE, AND LIMITATIONS OF SU1'PLIED - AIR TYPE RESPIRATORS Air Supplied Suit With Blower Without Blower rype A Supplied Air Resp. Type B Supplied Air Resp. Method of Operation A form of continuous air line respirator. Air is supplied by a motor-driven or handoperated blower. The wearer provides motivatinc force to pull air through the hosa. Use r For work where there Use in atmospheres im- Non-emergency work with is exposure to sub- mediately dangerous to protection provided for stances that are ir- life or health is per- an unlimited period. Up ritating or corrosive missible. Op to 300 to 75 feet of travel from to the skin but where feet of hose length air source. the atmosphere is not permitted. immediately dangerous to life. Limitations Certain contaminants If the blower fails. Limited to use in atmospheres react with the suit the unit still provides from which the wearer can materials causing protection, although escape unharmed without problems. Fatiguing a negative pressure the aid of the respirator. and dangerous unless it exists in the face- is well ventilated. piece during inhalation. ( TABLE I - B METHOD OF OPERATION, USE, AND LIMITATIONS OF SUPPLIED AIR RESPIRATORS (CONTINUED) Air Line Respirator (Type C Supplied Air Respirators) Continuous Flow Demand Class Pressure Demand Abrasive Bias tine Method Respirable air is Pressurized air of supplied through a small- supply to half-mask diameter air-line from or full facepiece. Operation a cocnprassor or The demand valve compressed air cylinders. permits flow of air only during inhalt- tion. Pressurized supply Pressurized of respirable air to air supplied half-mask or full through a facepiece. A small diameter positive pressure is hose at about maintained in the six cubic feet facepiece at all per minute to times. a looae-fittim hood t hairnets Use With a half-mash or full Use is limited to For maxima pro- Desirable to facepiece, a steady concentrations of tection from con- protect head flow of air is supplied gases or vapors that taminants in the and face from to the work causing a are not immediately atmosphere for it flying part- positive pressure within dangerous to life. is apt to have less icles and supp^ , the facepiece. and is not to be leakage in the face- particulate worn in 0^ deficient piece. free air to atmospheres. the worker. .mi tatlone Not to be used in atmos- Not to be used in pheres immediately irrespirable atmos- Can be used in atmospheres dangerous to life except pheres for when immediately danger- under certain conditions wearer inhales, a ous to life if an of precaution; a small slight negative emergency unit is emergency unit worn on the worker. pressure develops in worn by the wearer. the face piece possibly drawing contaminated air through leaks. Bulky to wear. To be used only in atmospheres not immediately hazardous to life. c TABLE I - C METHOD OF OPERATION, USE, AND LIMITATIONS OF ir AIR PURIFYING TYPE RESPIRATORS Chemical Filter Type Canister Gas Mask (Full Facepiece Respirator) Chemical Cartridge Resp. (Half Mask Resp.) Self - Rescue Mouthpiece Resp. Method of Packed sorbent beds removes Toxic gases and vapors toxic gases and vapors by removed by aborption, absorption, adsorption, adsorption, chemical chemical reaction or reaction or catalysis catalysis or a combination or a combination of of these methods. these. Equipped with one or more cartridges and exhalation t inhalation valves. A compact device de signed for quick application when un expected concentrations of contaminants are present. Nose clip supplied with unit. Use Provides protection against Provides respiratory For escape only. a gas, or vapor or a com protection against single bination of 9ases or vapors. or coe\bination of 2 or The service life is approx more gases and vapors. imately proportional to the canister size. Color coding for particular canisters to use can be seen in table 3. Provides some eye protection Limitation* Should avoid use in atmos pheres immediately hazard ous to life. Limited to the maximum gas concen tration for which the specific canister is reconmended (generally 2% maximum). Shall not be used in Mouth breathing with atmospheres immediately nose clip prevents dangerous to life and detection of contaminant limited to low concentra by odor. No eye tions of gases t vapors. protection provided. (Generally 0.1% maximum) Cannot be used in atmos pheres irritating to skin or eyes. TABLE I METHOD OF OPERATION, USE, AND LIMITATIONS OF AIR PURIFYING RESPIRATORS (CONTINUED) Mechanical - Filter Type Respirators_________ Combination Chemical and Mechanical __________Filter Respirators Method Filter media in pads, cartridges or Canisters and cartridges contain both of canisters removes dust, fog, fume, filters and sorbents to provide pro Operation mist, smoke or spray particles. Filters tection against both particulates may be replaceable or a permanent and gases and vapors. Some filters single use type. attach to a sorbent cartridge as a pre-filter (paint spray operations). Use ( Filters are designed to remove a single type of particulate or classes of particles. It offers no protection against gases or vapors. For use against particulate matter, gases and vapors in concentration within capacity of device. Filter shall be replaced or cleaned when breathing becomes difficult due to the filter plugging. Limitations. Protects against non-volatile particles only. Not to be used in high concen trations of particulate matter. Not to be used as a substitute for abrasive blasting respirator units. The advantages and disadvantages of the component parts of the combi nation respirator as described under each type will apply here. ( TABLE 2 0 Guide for the Selection of Respirators Hazard Respirator OXYGEN DEFICIENCY GAS AND VAPOR CONTAMINANTS Immediately dangerous to life or health. Not immediately dangerous to life or health. PARTICULATE CONTAMINANTS Immediately dangerous to life or health. Not immediately dangerous to life or health. COMBINATION GAS, VAPOR, AND PARTICULATE CONTAMINANTS Immediately dangerous to life or health. Not immediately dangerous to life or health. Self-contained breathing apparatus. Hose mask with blower. Combination air-line respirator with auxiliary self-contained air supply or an air-storage receiver with alarm. Self-contained breathing apparatus. Hose mask with blower. Air-purifying, full facepiece respirator with cher cal canister (gas mask). Self-rescue mouthpiece respirator (for escape only Combination air-line respirator with auxiliary sel contained air supply or an air-storage receiver vialarm. Air-line respirator. Hose mask without blower. Air-purifying, half-mask or mouthpiece respirator with chemical cartridge. Self-contained breathing apparatus. Hose mask with blower. Air-purifying, full facepiece respirator with appropriate filter. Self-rescue mouthpiece respirator (for escape only' Combination air-line respirator with auxiliary sell contained air supply or an air-storage receiver with alarm. Air-purifying, half-mask or mouthpiece with filter pad or cartridge. Air-line respirator. Air-line abrasive-blasting respirator Hose mask without blower. Self-contained breathing apparatus. Hose mask with blower. Air-purifying, full facepiece respirator with chemical canister and appropriate filter (gas mask with filter). Combination air-line respirator with auxiliary self contained air supply or an air-storage receiver with alarm. Air-line respirator. Hose mask without blower. Air-purifying, half-mask or mouthpiece respirator with chemical cartridge and appropriate filter. BROWN 6 ROOT, INC. TABLE 3 Color Code for Gas-Mask Canisters (ANSI K13.1 - 1967) Atmospheric Contaminants to be Protected Against Acid gases White Colors Assigned* Hydrocyanic acid gas White with *j-inch green stripe completely around the canister near the bottom. Clorine gas White with i-inch yellow stripe completely around the canister near the bottom. Organic vapors Black Amaonia gas Green Acid gases C ammonia gas Carbon monoxide Acid gases s organic vapors Green with *j-inch white stripe completely around the canister near the bottom. Blue Yellow with H-inch blue stripe completely around the canister near the bottom. Acid gases, organic vapors, and ammonia gases Brown Radioactive materias, excepting tritium and noble gases Purple (Magenta) Particulates (dusts, fumes, mists, fogs, or smokes) in combination with any of the above gases or vapors. Canister color for contaminant, as designated above, with *i-inch gray stripe completely around the canister near the top. All of the above atmospheric contaminants Red with *j-inch gray stripe completely around the canister near the top. Gray shall not be assigned as the main color for a canister designed to remove acids or vapors. NOTE: Orange shall be used as a complete body, or stripe color to represent gases not included in this table. The user will need to refer to the canister label to determine the degree of protection the canister will afford. BROWN & ROOT, INC. TABLE 4 BREATHING AIR QUALITY Gas 2 J CO co2 Hydrocarbons h2 N2 ' Odor Content Analysis 19 percent min. to 23 percent max. 20 ppm max. 1.0 ppm max 0.020 mg/liter max (as condensables) Dew point less than the lowest probable temperature to be encountered Balance Free of all objectionable odors APPENDIX A This listing of NIOSH/MESA certified respirators is cumulative as of January 24, 1975, cumulative supplements to this list will be added as they are published by NIOSH. V 30 BROWN i ROOT, INC. SUB PART A-l NIOSH/MESA CERTIFIED SELF-CONTAINED BREATHING APPARATUS BY CLASSIFICATION OF RESPIRATOR TYPES RESPIRATOR TYPE COMPRESSED AIR DEMAND TYPE ESCAPE ONLY APPROVAL NUMBER TC-13F-52 APPROVAL ISSUED TO: Mine Safety Appliances Co. (5 nin. unit) TC-13F-S5 Mine Safety Appliances Co. (5 min. unit) RESPIRATOR NUMBER(s) 457156 76753 COMPONENT PARTS NUMBERS AND DESCRIPTION 96680, facepiece 96065, breathing tube asseably 455943, cylinder 6 valve asseBbly. 456041, regulator 460744, -carrier asseably. 96671, nosecup 76760, breathing tube Bouthpieee assembly. 77140, cylinder 6 regulator assembly. 460743, carrier asseably. TC-13F-3S Surviv Air Div., U.S. Divers Co. (15 Bin. unit) 9065-03 9865-03 9421-49 or 9423-49 facepiece regulator assembly. 9158-01 cylinder assembly. 9456-00, canvas sack TC-13F-36 Surviv Air Div., U.S. Divers Co. (5 min. unit) 9069-02, 9069-11 9869-02, 9869-11 9421-49 or 9423-49 facepiece & regulator assembly. 9155-32, cylinder asseably 9375-60 case assembly. TC-13F-28 Lear Siegler.Inc. 202000 202090, storage case 202016, compressedair container. 202070,- face mask exhalation valve system OXYGEN GENERATING ESCAPE ONLY TC-13F-31 TC-13F-37 Lockheed Missiles Space Co. (60 min. unit) Mine Safety Appliance Co. (10 min. unit) 553717-501 553517-501, respirator asseably APR894-91 APR894-91 respirator - assembly. BROWN ROOT, INC. SUB PART A-l (CONTINUED) RESPIRATOR TYPE APPROVAL NUMBER APPROVAL ISSUED TO: COMPRESSED AIR DEMAND TYPE TC-13F-43 Globe Safety Products Inc. (30 sun.unit) TC-13F-46 Mine Safety Appliances Co. (15 min.unit) TC-13F-29 Mine Safety Appliances Co. (30 min.unit) TC-13F-50 NASA (30 min.unit) TC-13F-51 NASA (45 min.unit) RESPIRATOR NUMBER(S) COMPONENT PARTS NUMBERS AND DESCRIPTION 2540-W 1540-B 2221-3 Facepiece, 2550-W 2550- B breathing tube and quick connect a-sy. 2489-2 high pressure hose, regulator demand valve assy. 10S8-18 cylinder valve assembly. 2644-1 back pack and harness assembly. 457150, 95061. 457151, 95068 96680 or 95940 facepiece. 96065 breathing tube assembly. 9456104 cylinder valve assembly. 9456066 support assy. 460255 regulator assy. 457153, 457154, 95066, 96363 96680 or 95940 facepiece. 449267 breathing tube assembly. 94007 or 96337 cylinder valve assembly. 931184 harness 449911 regulator assy. 27275-00 27234-00, facepiece assembly. 27240-00 frame and harness assembly. 27235-00, regulator assembly. 27237-00, pressure reducer assembly. 1630-72-14, cylinder assembly. 27275-01 27234-00 facepiece assy. 27240-00 frame harness assembly. 27235-00 regulator assy 27237-00 pressure re ducer assembly. 1269367-1 cylinder assy RESPIRATOR TYPE BROWN t ROOT, INC. SUB PART A-l (CONTINUED) 32 APPROVAL NUMBER APPROVAL ISSUED TO: . RESPIRATOR NUMBER(si COMPONENT PARTS NUMBERS AND DESCRIPTION COMPRESSED AIR DEMAND TYPE (CONTINUED) TC-13F-41 Scott Aviation (15 siin.unit) TC-13F-39 Scott Aviation (30 min.unit) TC-13F-44 Surviv Air Div. U.S. Divers (30 nin.unit) TC-13F-45 Surviv Air Div. U.S.Divers Co. (30 min.unit) COMPRESSED AIR PRESSURE-DEMAND TYPE TC-13F-47 Mine Safety Appliances Co. (15 ain. unit) 90000-200 900000-00 9038-00, 9038-02, 9838-00, 9838-02, 9038-20 9038-22 9838-20 9838-22 95063 460262 800110-02 harness assy. 800010-01 cylinder c valve assembly. 600013-00 regulator asstably. 800029-01 hose coupling assembly. 801450-13 facepiece t tube asseably. 800020-04 harness t backplate assembly 800013-00 regulator assembly. 800010-00 or 8000-10-10 cylinder and valve assesibly. 800029-00 hose coupling assembly. 801450-13 facepiece ( tube asseably. 9411-12 or 9413-20 facepiece 9118-00 regulator 9602-47 low pressure 9151-45, cylinder valve assembly. 9457-00 bach pack assy. 9411-60 or 9413-60 > facepiece 9118-01 regulator 9602-47 low pressure 9151-45 cylinder & valve assembly. 9457-00 back pack assembly 96057 facepiece 96065 breathing tube assembly. 456104 cylinder and valve assy. 456066 support assy. 460256 regulator assy. BROWN ROOT, INC SUB PART A-l (CONTINUED) RESPIRATOR TYPE APPROVAL NUMBER APPROVAL ISSUED TO: RESPIRATOR NUMBER(S) COMPONENT PARTS NUMBERS AND DESCRIPTION COMPRESSED AIR PRESSURE-DEMAND TYPE (CONTINUED TC-13F-30 Mine Safety Appliances Co. (30 min.unit) 95069, 96336 96057, facepiece 449267, breathing tube assembly. 94007 or 06337 cylinder and valve assy. 93164 harness 449910 regulator assy. COMPRESSED OXYGEN UNITS LIQUID OXYGEN UNITS TC-13F-42 Scott Aviation (IS min. unit) 900015-00 TC-13F40 Scott Aviation (30 min.unit) 900014-00 TC-13F-27 BioMarine Industries Inc. (45 min.unit) BG-174A TC-13F-38 Dragerverfc.AG (3 hour unit) BG-174A TC-13F-32 Siebe Gorman Ltd. (3 hour unit) 013831.04 059994.11 800110-02 harness assy. 8000010-01 cylinder valve assembly. 600212-00 or 800212-03 regulator assy. 800029-01 hose coupling assembly. 601500-15 facepiece tube assembly. 800020-04 harness bacfcplate assembly. 800010-00 or 80000-10 cylinder valve assy. 800212-00 or 800212-0 regulator assy. 800029-00 hose coupling assembly. 801500-15 facepiece and tube assembly. M174A/3 mash hose B174A/3 harness frame assembly. C174A/3 cylinder valve. 9/13-28 Co2. canister M174A/3 mash hoses B174A/3 harness frame C174A/3 cylinder valve 9X18-28 COj canister 032275.00 facepiece assy 059994.10 harness assy. 05994.11 evaporator sorbent canister breathing bag assy. 032262.01 timer assy. 029697.01 Sorbent (PROTOSORE) RESPIRATOR TYPE BROWN ROOT, INC. SUB PART i 1 (CONTINUED) APPROVAL NUMBER APPROVAL ISSUED TO: RESPIRATOR NUMBER(9) COMPONENT PARTS NUMBERS AND DESCRIPTION COMBINATION COMPRESSED AIR FOR ESCAPE ONLY AND PRESSUREDEMAND TYPE C AIR LINE RESPIRATOR TC-13F-56 Mine Safety Appliances Co. 9639S 4S5994 ( 10 min. escape unit) Hose Length Range 25 - 300 ft. Pressure Range 70 - 90 Psi TC-13F-48 Scott Aviation (3 or 5 min. escape unit) 900006 (lose Length Range 25 - 300 ft. Pressure Range 350 - 450 Psi TC-13F-49 Scott Aviation (3 or 5 min escape unit) 900007 Hose Length Range 25 - 300 ft. Pressure Range 350 - 450 Psi ( 455862 or 4S599S facepiece . 460623 breathing tube assembly. 454081 cylinder valve assembly. 460673 regulatorconnector and pressure switch assembly. 455847 harness. 455011 and/or 455022 air-supply hose. 801450-13 facepiece assembly and breathing tube assembly. 802157-00 hose coupling assy. 800013-01 regulator assembly. 22034-01 or 22034-02/03 harness cylinder assy. 22025-01 coupling hose assembly. 15319/6141 air-supply hose. (Below 32F., add 801432DO, nosecup assy, to the above) 801500-15 facepiece assembly. 802157-00 breathing tube assembly. 800212-01 regulator assy. 22034-01 or 22034-02/03 harness cylinder assy. 22025-01 coupling hose assembly. 15318/6141 air-supply hose. (Below 32F., add 801432-00 nosecup assy, to the above) BROW t ROOT, INC. SUB PART A-l (CONTINUED) .> j RESPIRATOR TYPE APPROVAL NUMBER APPROVAL ISSUED TO: RESPIRATOR NUMBER(s) COMPONENT PARTS NUMBERS AND DESCRIPTION COMBINATION TC-13F-33 COMPRESSED AIR TOR ESCAPE ONLY AND PRESSURE- DEMAND TYPE C AIR LINE RESPIRATOR (continued) SurvivAir Div. U.S. Divert Co. (5 ain.unit) 9081-12 9881-12 TC-13F-34 Surviv Air Div. U.S. Divers Co. (5 min.unit) 9081-12 9881-12 TC-13F-S3 Surviv Air Div U. S. Divers Co. Hose Length Range 4 - ISO feet Pressure Range 50 - 125 Psi 9081-13 9881-13 (Foster Couplings) TC-13F-54 Surviv Air Div U.S.Divers Co. Hose Length Range 4 - 250 feet Pressure Range 50 - 125 Psi 9081-15 9881-15 (Schrader Coupling) 940-05 or 9424-05 facepiece t regulator assembly. 9881-20 regulator asaaably. 9115-22 cylinder assy. 9340-41 through 50, 9304 through 73 or 93 -85 air line hose. 9404-05 or 9424-05 facepiece s regulator asseably. 9881-20 regulator assy. 9155-22 cylinder assy. 9304-11 through 20, 9304 or 9304-80 through 83 air-line hose. 9425-23 or 9405-23 facepiece t regulator assembly. 9155-36 cylinder assy. 9304-11, 9304-12, 9304-13,9304-14, 9304-15, 9304-16,9304-17,9304-18, 9304-19,9304-20,9304-68, 9304-80,9304-81, 8304-82, or 9304-83 air line hose. 9425-24 or 9405-24, facepiece 6 regulator asseably. 9155-35, cylinder assembly. 9304-41,9304-42,9304-43, 9304-44,9304-4S,.9304-4 6, 9304-47,9304-48,9304-49, 9304-50,9304-70,9304-71, 9304-72,9304-73,or 9304-85 air-line hose. RESPIRATOR TYPE TYPE B (W/O BLOWER) TYPE C DEMAND FLOW TYTE C DEMAND CONTINUOUS FLOW BROWN ROOT, INC. SUB PART A-2 NIOSH/MESA CERTIFIED SUPPLIED AIR RESPIRATORS BY CLASSIFICATION OF RESPIRATOR TYPES APPROVAL NUMBER APPROVAL ISSUED TO: RESPIRATOR NUMBER(S) COMPONENT PARTS NUMBERS AND DESCRIPTION TC-19C-77 Mine Safety Appliances Co. 4S7623 TC-19C-75 Mine Safety Appliances Co. 457165, 84283, 457164, 93928, 46539, 94988 TC-19C-65 Surviv Air Div. U.S.Divers Co. 9011-14 9811-14 TC-19C-66 Surviv Air Div. U.S.Divers Co. 9011-14 9811-14 TC-19C-73 Scott Aviation 802230 96660 facepiece 88306 breathing tube assembly. 460626 harness assy. 460625, stake 6 funnel assembly. 17273 air-supply hose 96680, 95940,or 94331 facepiece 457158 breathing tube assembly. 81070 or 92656 regu1ator-connector. 9961 web belt 455021 or 455022 hose 9405-02 or 9425002 facepiece and regulatoi 9454-00 waist belt 9304-41 through 50, 9340-70 through 73, or 9340-85 air line hose. 9405-02 or 9425-02 facepiece regulator assembly. 9454-00 waist belt 9304-41 through 50, 9304-70 through 73, or 9304-85 air-line hose. 801450/41 facepiece assy. 80277-00 requlator assy. 26022-01/03.supply hose or 25002-01/03 supply hose with 26025/01,strap ( belt assy. 30010/ 30020 serial extension hose. BROW i ROOT, INC, SUB PART A-2 (CONTINUED) RESPIRATOR TYPE APPROVAL NUMBER APPROVAL ISSUED TO: RESPIRATOR NUMBER(S) COMPONENT PARTS NUMBERS AND DESCRIPTION TYPE C PRESSURE DEMAND FLOW TC-19C-74 Scott Aviation 801S48 TC-19C-67 Survlv Air Div. U.S. Divers Co. 9011-13 9811-13 TC-19C-68 Surviv Air Div. U.S. Divers Co. 9011-15 9811-15 TYPE C CONTINUOUS FLOW TC-19C-78 Mine Safety Appliances Co. (NOTE: FOR HEAVY CONCENTRATIONS OF PARTICUIATE5NOT TO BE USED IN SANDBLASTING OPERATIONS) TC-19C-80 Mine Safety 460862, 460863, 460864, 460865. 460903 460904 801450-04,facepiece assembly. 801549-00, regulator assembly. 26022-01/03, supply hose with 26022-01/03 supply hose with 26025-01 strep and belt assy, end 30010/300/20 series 9405-00 or 9425 facepiece and regulator assembly. 94S4-00 waist belt. 9304-11 through 20, 93,68,or 9340-80 through 83, airline hose. 9405-02 or 9425-02 facepiece and regulator assembly. 9454 waist belt. 9304-41, through 50, 9304-85, airline hose. 94331, 95940, or 96680 facepiece with 9661 web belt or 460861 facepiece with 78362 harness. 457158 breathing tube assembly. 460814 control valve. 455021 and/or 455022 air-supply hose. 460886 hood. 94379' cape. 95302 filter. 460893 filter holder. 9961 web belt. 360814 valve. 455021 or 455022 airsupply hose 460886 hood. 94029 collar. 95302 filter. 460893 filter holder. RESPIRATOR TYPE ROWN i ROOT, INC. SUB PART A-2 (CONTINUED) APPROVAL NUMBER APPROVAL ISSUED TO: RESPIRATOR NUMBER(s) COMPONENT PARTS NUMBERS AND DESCRIPTION 460904 460905 460906 TC-19C-82 Pulmosan AL160 10166 TC-19C-71 Scott Aviation TC-19C-72 Scott Aviation TC-19C-83 Willson 4616-11 -12,-15, -21,-22, and -25 4622-11 -12,-15, -21,-22, and -25 4616-18 -19,-28, and -29 4622-18 -19,-28, and -29. GA2 CA8 9961 web belt. 460814 valve. 455021 or 455022, air-supply hose. 460886, hood. 94379, cape. 9S302, filter. 460893 filter holder. 9961 veb belt 460829 connector. 455021 or 455022 aireupply hose. 460886 hood. 94029 collar. 95302 filter. 460893 filter holder. 9961 veb belt 460829 connector. 455021 or 455022 airsupply hose. 10939 facepiece ( breathing tube assy. 10942 belt with orifice coupler assy. 20138,20141,or 20144 air-supply hose. 742 or 4704 facepiece 6119 breathing tube 4196 or 4196-1 flow control valve and cartridge assembly. 4286 air-supply hose. 742 or 4704 facepiece 6119 breathing tube 4119 or 4199-1 flow control cartridge assy. 4225 air-supply hose. R726 or R727 facepiece R728 breathing tube assy R729 airline belt subassembly. R714 air-supply hose RESPIRATOR TYPE BROWN t ROOT, INC SUB PART A-2 (CONTINUED) 39 APPROVAL NUMBER APPROVAL ISSUED TO: RESPIRAOTR NUMBER(S) COMPONENT PARTS NUMBERS AND DESCRIPTION TYPE C AND/OR TYPE CE CONTINUOUS FLOW TC-19C-64 (NOTE: USED IN SANDBLASTING OPERATIONS) TC-I9C-84 Ceseo Safety Products and U.S. Safety Service E.D. Bullard Co. PI-800 77-SH 77-SACH 77-SG TC-19C-79 Encon Mfg.Co. 6400 TC-19C-81 Mine Safety Appliances Co. 460907 460906 460909 800-1-AA,800-1-DA, or 800-1-1-NA Hood assembly. 800-2, breathing tube 800-3 air-supply hose assembly. 800-6 quick disconnect 800-5 harness. 108-110-7725 hood with 25' of 3/8* air-line 108-240-4640 belt 6 break valvey assy. 108-110-7755 hood with 25' of 3/8" air-line 108-260-0000 gold line AC systen assembly. 108-110-7750 box front adaptor kit for 77series hoods. 6400-1 helmet and shroud assembly. 6400-75 air duct. 6315-50 air regulating valve. 6400-10 belt. 6400-25 or 6400-50 air supply hose assembly. 72800 ro 460885 hood. 94029 collar. 460814 valve. 9961 web belt 455021 or 455022 airsupply hose. 460885 hood, 94417 cape. 460814 valve. 9961 web belt. 455021 or 455022 airsupply hose. 460885 hood. 4S0924 cape. 460814 valve. 9961 web belt 4-55021 or 455022 airsupply hose. RESPIRATOR TYPE BROWN 6 ROOT, INC. SUB PART A-2 (CONTINUED) APPROVAL NUMBER APPROVAL ISSUED TO: RESPIRATOR NUMBER(s) COMPONENT PARTS NUMBERS AND DESCRIPTION TC-19C-69 3M Oaapany 460910 W-840 W-810 W-870 N-858 W-856 W-620 W-888 460885 hood. 94488 collar. 460814 valve. 9961 veto belt. 455021 or 4SS022 airsupply hose. W-S002 helmet K-2800 air reflating valve and breathing tube assembly. w-9435 air supply hose. W-5003 helmet w-2800 air regulating valve s breathing tube assembly. W-9435 air supply hose. W-5005 helmet W-2800 air regulating valve and breathing tube assembly. W-943S air supply hose. W-S006 helmet w-2800 air regulating valve and breathing tube assembly. w-5201 hood W-2800 air regulating valve S breathing tube assembly. W-9435 air supply hose W-5003 helmet W-6803 air t temperature regulating valve t breathing tube assy. W-9435 air supply hose. w-5006 helmet w-6803 air and temp erature regulating valve and breathing tube assembly. W-9435 air supply hose RESPIRATOR TYPE ( BROWN & ROOT, INC. SUB PART A-2 (CONTINUED) APPROVAL NUMBER - APPROVAL ISSUED TO: RESPIRATOR NUMBER(S) COMPONENT PARTS NUMBERS AND DESCRIPTION W-880 W-890 W-681 W-5005 helmet W*6803 air and temperature regulating valve and breathing assembly. W-9435 air supply hose. W-5002 helmet W-5803 air and temperature regulating valve and breathing assembly. w-9435 air supply hose. w-5201 helmet w-6803 air and temperature regulating valve and breathing assembly. W-0435 air supply hose. ( APPROVAL NUMBER TC-19C-64 TC-19C-64 TC-19C-65 TC-19C-66 TC-19C-67 TC-19C-68 TC-19C-69 TC-19C-70 TC-19C-71 TC-19C-72 TC-19C-73 TC-19C-74 TC-19C-75 BROWN t ROOT, INC. SUB PART A-2 PRESSURE RANGES AND HOSE-LENGTH RANGES FOR APPROVED SUPPLIED-AIR RESPIRATORS APPROVAL ISSUED TO: RESPIRATOR NUMBER(s) HOSE-LENGTII RANGE, FEET Cesco PI-800 U.S. Safety Services PI-80 SurvivAir 9011-12, 9811-12 SurvivAir 9011-14 9811-14 SurvivAir 9011-13 9811-13 SurvivAir 9011-15 9811-15 3M Company W-810,W-840, N-856.W-858, W-870 3M Company W-820, W-880, K-881, H-888, W-890 Scott 4616-11, -12, -15, -21, -22, -25; and 4622-11, -12, -15, -21, -22, -25. Scott 4616-18, -19, -28, -29 and 4622-18, -19, -28, -29 Scott 802230 Scott 801548 MSA 457165, 84283, 457164,93928, 46539,94988 15 15 4 - 2S0 4 - 250 4 - 250 4 - 250 25 - 300 25 - 100 15 - 50 50 - 250 15 - 50 50 - 250 25 - 250 25 - 250 25 - 300 PRESSURE RANGE, PS I 5-17 5 - 17 SO - 125 50 - 125 50 - 125 50 - 125 50 - 90 65 - 90 12 - 25 25 - 40 6-16 16 - 22 60 - 125 60 - 125 50 - 125 APPROVAL NUMBER TC-19C-77 TC-19C-78 TC-19C-79 TC-19C-60 TC-19C-81 TC-19C-82 TC-19C-83 BROWN t ROOT, INC. SUB PART A-2 (CONTINUED) APPROVAL ISSUED TO: RESPIRATOR NUMBER(I) HOSE- LENGTH RANGE , FEET MSA MSA Encon Mfg. MSA MSA Pulnosan Willson 4S7623 460862, 460863, 460864, 460865 6400 460903,460904, 460905,460906 460907, 460908, 460909, 460910 AL180 110168 GA2, GA8 up to 75 25 - 300 25 - SO 25 - 300 25 - 300 15 - 50 15 - 100 100 - 300 PRESSURE RANGE , PSI 35 - 40 55 - 60 55 - 60 55 - 60 10 - 20 10 - 32 21 - 50 BROWN POOT, INC SUB PART A-3 NIOSH/MESA CERTIFIED CAS MASK BY CLASSIFICATION OF HAZARDS CONTAMINANT CONDITION APPROVAL NUMBER r " - ===== AMMONIA; TC-14G-88 DUSTS MISTS APPROVAL ISSUED TO: Mine Safety Appliances Co. CARBON MONOXIDE SELF-RESCUE RESPIRATOR TC-14G-82 TC-14G-63 CHLORINE; DUSTS MISTS TC-14G-89 Mine Safety Appliances Co. Dragerwerk, AG Mine Safety Appliances Co. ORGANIC VAPORS; TC-14G-87 DUSTS 6 MISTS Mine Safety Appliances Co. PESTICIDES TC-14G-86 Mine Safety Appliances Co. VINYL CHLORIDE TC-14G-84 Mine Safety Appliances Co. TC-I4G-8S Scott Aviation TC-14G-91 Welsh RESPIRATOR NUMBER(s) 448979, 448980, 448981, 448982. H-65 810 460131, 460132, 460133, 460134. 448975, 448976, 448977, 448978. 448975, 448984, 448985, 448986. 461481, 461482, 461483, 461484, 461485, 461486. 601211-17, 601221-17 7820,7820S, 7829, and 7829S. COMPONENT PARTS NUMBERS AND DESCRIPTION 95940 or 96680, facepiece 448973, canister 455299 respirator assembly FSR810 respirator assembly 95940 or 96680, facepiece 460113, canister 95940 or 99680 facepiece 448974, canister 95940 or 96680, facepiece 448972, canister. 95940 or 96680, facepiece 88306, 457168, or 457175 breathing tube assembly 84937 or 84938, harness. 461480, canister. 742 or 600121,facepiece. 6108-10 or 6110-27, breathing tube assembly. 565 or 600309-00,harness 084-VCL canister. 780011 or 780011S,facepiece 780060 or 780061, hose assembly 780039 or 780041, harnes: assembly 780062, connector. 7800-2VC, canister. CONTAMINANT CONDITION BROWN 6 ROOT, INC. SUB PART A-4 NIOSH/MESA CERTIFIED AIR PURIFYING RESPIRATORS BY CLASSIFICATION OF HAZARD APPROVAL NUMBER APPROVAL ISSUED TO: RESPIRATOR NUMBER(S) COMPONENT PARTS NUMBERS AND DESCRIPTION ORGANIC VAPORS (NOT MORE THAN 1,000 PPM BY VOLUMN) TC-23C-56 () ALSO CAN TC-23C-57 BE USED FOR DUSTS 6 MISTS WITH APPROPRIATE PARTS* TC-23C-83 American Optical Company. American Optical Company American Optical TC-23C-84 American Optical Company. TC-23C-86 BinAs Mfg.Co. TC-23C-99 TC-23C-S9 Cesco Safety Products DeVilbiss Corp. TC-23C-88 Glendale Optical TC-23C-B9 Glendale Optical TC-23C-40 Mine Safety Appliances Co. RS0S1 R6051 R50S5 R6055 R81S1 40-129 94R40 MSE-502 GR20-21 GR2021-10 459433 50208 basic respirator subassembly. RSI, adsorbent cartrid9es. 51071 basic respirator subassembly. R51 adsorbent cartridges. 50206 or 51071 basic respirator subassembly. R55 cartridge. 51294 basic respirator subassembly. R151 cartridge. 460854 facepiece assy. 40-130 cartridge. 94 facepiece assembly. R40 cartridge. 50728 basic respirator subassembly. MSE-506 adsorbent cartridges. F-200 facepiece C-21 cartridge F-10 filter F-21 filter cover F-200 facepiece. C-21 cartridge.F-10 filter *F-21 filter cover 449701 facepiece 459315 cartridges *459595 (10) or 459693 (100) filters *459027 covers. BROWN ROOT, INC. SUB PART A-4 (CONTINUED) CONTAMINANT CONDITION APPROVAL NUMBER APPROVAL ISSUED TO: RESPIRATOR NUKBER(s) COMPONENT PARTS NUMBERS AND DESCRIPTION TC-23C-48 Mine Safety Appliances Co. 85556 TC-23C-61 Pulmosan TC-23C-91 C-256 C-259 TC-23C-58 Safeline Products 5211 TC-23C-49 TC-23C-73 Welsh Mfg.Co. 7501 *7511 TC-23C-50 TC-23C-51 Willson Products Div. 1221 ESB, Inc. 122110 TC-23C-52 Willson Prod.Div. ESB, Inc. 122113 PAINT, TC-23C-92 LACQUER, ENAMEL, MIST AND ORGANIC VAPORS (NOT MORE THAN -3-3 1,000 PPM ORGANIC VAPORS) American Optical Company American Optical Company R819P R8151P TC-23C-94 American Optical Co. R5051P 449702 facepiece 44135 cartridges 73654 filters 11147 retainers 10763 body assembly with either 10924 or 10792 face cushion. 17160 chemical cartridge C-264-7 filter C-200-8 filter cap 05662 basic respirator subassembly. 5961 adsorbent cartridges. 7500-30 facepiece 7500-12 headband 7500-1 cartridges *7500-6 filters 7500-14 covers AR700 basic respirator assembly. R21 chemical cartridges RIO filters 662 retainers AR700 basic respirator assembly. R21 chemical cartridge R13 filters 51294 basic respirator subassembly. R191 cartridge. 51194 basic respirator subassembly. R151 cartridge R149 filter R1S0 filter clip. 50206 basic respirator subassembly. R51 cartridge R49 filter A185 filter clip. CONTAMINANT CONDITION BROWN ( ROOT, ZNC. SUB PART A-4 (CONTINUED) APPROVAL NUMBER APPROVAL ISSUED TO: RESPIRATOR NUMBER (S) COMPONENT PARTS NUMBERS AND DESCRIPTION TC-23C-95 American Optical Co. R60S1P 7C-23C-97 Aaerican Optical Co. RS091P TC-23C-98 TC-23C-87 Aaerican Optical Co. BinJcs Mfg.Co. R6091P 40-128 TC-23C-96 DeVilbiss Co. MSP-505 TC-23C-90 Glendale Optical GR2021-20 TC-23C-80 Mine Safety Appliances Co. 448849 TC-23C-75 Welsh 7S31 TC-23C-53 Willison Prod.Div. 122114 ESB, Inc. 51071 basic respirator subasseably. R51 cartridge R49 filter R165 filter clip. 50206 basic respirator subasseably. R91 cartridge. 51071 basic respirator R91 cartridge. 460854 facepiece 40-130 cartridge 40-131 filter 40-132 filter cover. 50728 basic respirator assembly. MSE-506 cartridge MSP-403 filter MSP-405 filter clip. F-200 facepiece C-21 cartridge F-20 filter F-21 filter cover. 449703 facepiece assy. 459315 cartridges 448842 filters 448844 filter covers 7500-30 facepiece assy. 7500-1 cartridges 7500-10 filters 7500-14 filter covers AR700 basic respirator assembly. R21 chemical cartridges P683 filter retainers R14 filters CONTAMINANT CONDITION BROWN ( ROOT, INC. SUB PART A-4 (CONTINUED) APPROVAL NUMBER APPROVAL ISSUED TO: RESPIRATOR NUMBER(s) *o COMPONENT PARTS NUMBERS AND DESCRIPTION PESTICIDES TC-23C-78 3M Company W262 W263 TC-23C-45 Mine Safety Appliances Co. TC-23C-79 Mine Safety Appliances Co. TC-23C-74 Welsh 4S9S20 448846 7549 TC-23C-54 Willson Prod.Div. EBS, Inc. AGRI-TOX-2 AMMONIA (NOT MORE THAN 300 PPM) TC-23C-63 TC-23C-64 Welsh 7504 *7514 () ALSO CAN BE USED FOR DUSTS MISTS WITH APPROPRIATE PARTS* AMMONIA TC-23C-43 (NOT MORE THAN 300 PPM) METYL AMINE (NOT MORE THAN TC-23C-44 100 PPM) () ALSO CAN BE USED FOR DUSTS t MISTS WITH APPROPRIATE PARTS* TC-23C-70 TC-23C-71 Mine Safety Appliances Co. 459436 Mine Safety 855558 Willson Prod.Div. 1224 EBS,Inc. 122410 W2801 powered air purifier. W2031 filter W2114 cartridge W2090 breathing tube W5005 helmet or WS201 hood. 449702 facepiece 459519 cartridges. 449703 facepiece assy. 448847 cartridges 7500-30 facepiece assembly. 7500-21 cartridges 7500-23 filters 7500-14 filter covers AR700 Basic respirator assembly R21 chemical cartridges R15 filters R683 filter retainers 7500-30 facepiece assy. 7500-4 cartridges *7500-6 filters 7500-14 covers 449703 facepiece 459318 cartridges 459595 (10) or 459693 (100) 459027 filters 449702 facepiece 42876 cartridges 73654 filters 11147 retainers AR700 basic respirator assembly. R24 cartridges RIO filters R682 retainers BROWN 6 ROOT, INC SUB PART A-4 (CONTINUED) CONTAMINANT CONDITION APPROVAL NUMBER APPROVAL ISSUED TO: RESPIRATOR NUHBER(c) COMPONENT PARTS NUMBERS AND DESCRIPTION CHLORINE TC-23C-S5 Scott Aviation (NOT MORE THAN TC-23C-67 10 PPM CHLORINE) TC-23C-68 () ALSO CAN BE USED TOR DUSTS MISTS WITH APPROPRIATE PARTS* Willson SULFUR DIOXIDE (NOT MORE THAN 50 PPM SULFUR DIOXIDE) TC-23C69 TC-23C-72 (*) ALSO CAN BE USED FOR DUSTS t MISTS WITH APPROPRIATE PARTS* Willson CHLORINE; TC-23C-60 SULFUR DIOXIDE; HYDROGEN CHLORIDE American Optical Co. (NOT MORE THAN 10 PPM CHLORINE 50 PPM SULFUR DIOXIDE 50 PPM HYDROGEN CHLORIDE) TC'23C"61 `TC-23C-41 (*) ALSO CAN BE USED FOR DUSTS AND MISTS WITH APPROPRIATE PARTS* TC-23C-42 American Optical Co. Mine Safety Appliances Co. Mine Safety Appliances Co. 70-CL 1222 *122210 1223 122310 R5052 R60S2 459434 4594S3 TC-23C-62 Safeline Products 5221 70-CL respirator assy. AR700 basic respirator assembly. R22 cartridges RIO filters R6B2 retainers AR-700 Basic repirator R23 cartridges RIO filters R682 retainers 50206 basic respirator subassembly. R52 cartridges. 51071 basic respirator subassembly. 449703 facepiece 459316 cartridges *459595 (10) or 459693 (100) filters *459027 covers. 449702 facepiece 459452 cartridges 73654 filters *11147 retainers. 05862 basic respirator subassembly. 5963 cartridges. BROWN t ROOT, INC. SUB PART A-4 (CONTINUED) CONTAMINANT CONDITION APPROVAL NUMBER APPROVAL ISSUED TO: RESPIRATOR NUMBER(S) COMPONENT PARTS NUMBERS AND DESCRIPTION CHLORINE; TC-23C-82 SULFUR DIOXIDE; HYDROGEN CHLORIDE ORGANIC VAPORS TC-23C-8S (NOT MORE THAN 10 PPM CHLORIDE 50 PPm iULrUK DIXOIDE *TC-23C-46 SO PPM HYROGEN CHLORIDE 1000 PPM ORGANIC VAPORS) TC-23C-47 <) ALSO CAN BE USED FOR DUSTS 4 MISTS WITH APPROPRIATE PARTS* TC-23C-65 American Optical Co. American Optical Co. Mine Safety Appliances Co. Mine Safety Appliances Co. Welsh R5053 R60S3 R81S3 85S57 459453 7503 TC-23C-66 7513 TC-23C-76 Willson TC-23C-77 1225 122510 PNEUMOCONIOSIS FIBROSISPRODUCING DUST TC-23C-147 American Optical Co* TC-21C-132 3M Company (SILICA ASBESTOS etc.) TC-21C-148 Safeline Products TC-21C-143 Willson Products NOTE: SINGLE USE RESPIRATORS DUSTS, MISTS TC-21C-162. American Optical Co. R10S0 8710 5350 1400 R8100 50208 or 51071 basic respirator subassembly 51294 basic respirator subassembly. R153 cartridge. 449702 facepiece 10340 cartridges *73654 filters 11147 retainers 449703 facepiece 459317 cartridges 459545 (10) or 459693 (100) filters 459027 covers 7500-30 facepiece assembly. 7500-3 cartridges 7500-6 filters 7500-14 covers AR700 basic respirator assembly. R25 cartridges RIO filters . R682 retainers respirator assembly respirator assembly respirator assembly respirator assembly. 51294 basic respirator subassembly. R100 filters 51347 filter cover. CONTAMINANT CONDITION DUSTS, MISTS, FUMES POWERED AIR purifying RESPIRATORS. BROWN ( ROOT, INC. SUB PART A-4 (CONTINUED) APPROVAL NUMBER APPROVAL ISSUED TO: RESPIRATOR NUMBER(S) COMPONENT PARTS NUMBERS AND DESCRIPTION TC-21C-166 American Optical Co. R2090N TC-21C-154 Cover 1483 TC-21C-167 DeVilbiss TC-21C-138 Mine Safety TC-21C-156 Mine Safety Appliances Co. TC-21C-159 Mine Safety Appliances Co. TC-21C-157 Pulmosan MSD-507 C 96000 or 4S7344 461483 460357 C-264 TC-21C-165 Pulmosan L800 TC-21C-136 3M Company W 250 W 252 51460 basic respirator subassembly. R90N filter. 51062 filter cover. B222 respirator assembly. riOO filters 51461 basic respirator subassembly MSD-508- filter. 51062 filter cover. 96042 filters 451683 facepiece 457481 filter. 460357 facepiece 457481 filter. 10768 body assembly with either 10924 or 10792 face cushion. C-264-8 adapter 4 filter cap. C-264-7 filter. 10771 body assembly 10924 or 10795 face cushion. C-264-7 filter L-800-8 filter cap. W-5005 helmet W2031 filter W2090 breathing tube W2009 back pack harness W2008 machine mounting W-5003 helmet W-2031 filter W-2090 breathing tube W-2009 back pack harnes: W-2008 machine mounting CONTAMINANT CONDITION DUSTS, MISTS, ASBESTOS BROWN 6 RCCT, INC SUB PART A-4 (CONTINUED) APPROVAL NUMBER APPROVAL ISSUED TO: RESPIRATOR NUMBER(S) COMPONENT PARTS NUMBERS AND DESCRIPTION W 253 W 254 TC-21C-136A 3M Company W250, W252, W253, W254. TC-21C-144 American Optical R5030 TC-21C-145 American Optical R6030 TC-21C-161 American Optical R5063 R6063 TC-21C-163 Cesco Safety Prod. 94R20 TC-21C-164 Glendale Optical GR2000 GR4000 TC-21C-133 Mine Safety Appliances Co. 459440 W-5002 helmet W-2031 filter W-2090 breathing tube W-2009 back pack harness W-2008 machine mounting W-501 helmet W-2031 filter W-2090 breathing tube W-2009 back pack harness W-2008 machine mounting W2031 filter W2090 breathing tube. Either W2009AA, W2009AD back pack harness, or W2008, W2008BA machine' mounting. W5005, W5003, W5002, or WS201 helmet. 50206 basic respirator subassembly R30 filters discs 51062 filter covers. 51071 basic respirator subassembly. R30 filter discs 51062 filter covers. 50206 or 50171 basic respirator subassy. R56 filter. 94 facepiece assembly R20 filter 94R9 filter screen. F-200 or F-400 facepiece. F-10 filter F-14 filter cover 449703 facepiece 459032 filter 459017 filter covers BROWN 6 ROOT, INC. SUB PART A-4 (CONTINUED) CONTAMINANT CONDITION APPROVAL NUMBER APPROVAL ISSUED TO: RESPIRATOR NUMBER(s) COMPONENT PARTS NUMBERS AND DESCRIPTION TC-21C-146 Safeline Products 5265 TC-21C-151 Welsh 7506 TC-21C-153 welsh 7406L TC-21C-139 Willson Products 560 TC-21C-140 Willson Products 1210 TC-21C-141 Willson 1211 DUSTS, FUMES, MISTS, RADIONUCLIDES TC-21C-160 American Optical TC-21C-155 Mine Safety Appliances Co. TC-21C-134 Mine Safety Appliances Co. R5057 R6057 460185 459438 TC-21C-13S Mine Safety Appliances Co. TC-21C-150 Mine Safety Appliances Co. TC-21C-158 Pulmosan 459439 88479 and 457117 C-263 05862 basic respirator subassembly. 5905 filters 51062 filter covers 7500-30 facepiece 7500-6 filters 7500-14 filter covers 7400-30 facepiece 7400-6 filter 7400-14 filter cover AR699 respirator R707 filter,cartridges assembly. R60 filter R635 filter retainer AR700 basic respirator assembly. RIO filters R682 filter retainer AR700 basic respirator assembly. Rll filters. 50206 or 50171 basic respirator subassembly. R57 filter. 460560 facepiece R57 filter. 449703 facepiece 459321 filter (RADON DAUGHTERS) 449703 facepiece 459322 filters (TC-21C'135) 96680 or 95940 facepiece 88480 filter. 10768 body assembly 10924 face cushion C0263-7 filter. CONTAMINANT CONDITION BROWN & ROOT, INC. SUB PART A-4 (CONTINUED) APPROVAL NUMBER APPROVAL ISSUED TO: RESPIRATOR NUMBER(s) COMPONENT PARTS NUMBERS AND DESCRIPTION TC-21C-149 Scott Aviation TC-21C-152 Welsh TC-21C0142 Willson 662-1 and 662-2 7580- 1212 805 or 742 facepiece 502R filter 75-30 facepiece assembly. Ar700, basic respirator assembly. R12 filters APPENDIX B Fonts for Inspection snd Maintenance of Respiratory Protective Equipment and Air Filters. FORM A INSPECTION LOG OF RESPIRATORY PROTECTIVE EQUIPMENT DATE NUMBER OF EQUIPMENT EMPLOYEES INSPECTED DISCREPANCIES f JOB I CORRECTIVE ACTION TAKEN - DEFECTION & WONTOWCE UTt OF RESPIRABLE AIR FILTERS JOB I DATE FILTER SERIAL NUMBER WONITNAfCE PERFORMED APPENDIX C Respiratory Protection Definitions S Terms ABRASIVE-BLASTING RESPIRATOR-----see respirator. AERODYNAMIC DIAMETER-------------------- The diameter of a unit density sphere having the same settling velocity as the particle in question of whatever shape and density. AIRLINE RESPIRATOR----------------see respirator. AIR-PURIFYING RESPIRATOR------------ see respirator. AIR-REGULATING VALVE--------------An adjustable vale used to regulate airflow to the facepiece, helmet, or hood of an air-line respirator. AIR SUPPLY DEVICE---------------- --A hand or motor operated blower for the hose mask or a compressor or other source of res pirable air for air-line and abrasive-blasting respirators. BREATHING TUBE-------------------------------- A tube through which air or oxygen flows to the facepiece, helmet, or hood. CANISTER (AIR-PURIFYING)------------ A container filled with sorbents and catalysts that remove gases and vapors from air drawn through the unit. The canister may also contain an aerosol (particulate) filter to remove solid or liquid particles. CANISTER (OXYGEN-GENERATING)--A container filled with a chemical which generates oxygen by chemical reaction. CARTRIDGE----------------------------------------- A small container filled with air-purifying media. CATALYST------------------------------------------- In respirator use, a substance which converts a toxic gas (or vapor) into a less-toxic gas (or vapor). CHEMICAL-CARTRIDGE RESPIRATOR--see respirator. CONTAMINANT---------------------- --A harmful, irritating, or nuisance material that is foreign to the normal atmosphere. CORRECTIVE LENS------------------------------A lens ground to the wearer's individual corrective prescription. DETACHABLE COUPLING---------------------- A device by means of which the respirator wearer, without using hand-tools, may detach the air supply line from that part oi the respirator worn on the person or from the air-supply source. DISINFECTION------------ -------The destruction end removal of pathogenic organisms, especially by means of chemical substances. DUST------------------------------------------- ---Suspended particles of solid matter in such a fine state of sub-division that they may be Inhaled, swallowed or absorbed by the body. EXHALATION VALVE- ----- -------A device that allows exhaled air to leave a respirator and prevents outside air from entering through the valve. EYEPIECE------------------a gastight, transparent window(s) in a full facepiece through which the wearer may see. FACEPIECE--------------------------------------- That portion of a respirator that covers the wearer's nose and mouth in a half-mask facepiece or nose, mouth and eyes in a full facepiece. It is designed to make a gas-tight or dust-tight fit with the face and includes the headbands, exhalation valve(s), and connections for purifying device or respirable gas source or both. FILTER RESPIRATOR-------------------------- see respirator. FILTER---------------------------------------------- A fibrous media (canned or uncanned) used in respirators to remove solid or liquid particles from the airstreao entering the respirator enclosure. FOG-----------------------------------------------------A mist of sufficient concentrate to perceptibly obscure vision . FULL FACEPIECE------------------------------- see facepiece HEAD HARNESS----------------------------------- A device for holding the facepiece securely in place on the wearer's head. HELMET----------------------------------------------- A device that shields the eyes, face, neck and other parts of the head. hood---------------------------------------------------A device that completely covers the head, neck, and portions of the shoulders. HOSE MASK------------- ------------------------ see respirator IMMEDIATELY DANGEROUS TO LIFE OR HEALTH------------- Included are conditions that pose an immediate threat to life or health and conditions that pose en immediate threat of severe exposure to contaminants such as radioactive materials which are likely to have adverse delayed effects on health. INHALATION VALVE------------------- a device that allows respirable air to enter the facepiece and prevents exhaled air from leaving the facepiece through the intake opening. IRRESPIRABLE----------------------- :-----------Unfit for breathing. MIST---------------------------------------------------A liquid condensation particle with sires ranging from sub-microscopic to visible. MPC-----------------------------------------------------Maximum permissible concentration. These con centrations are set by the National Committee on Radiation Protection. They are recommended maximum average concentrations of radionuclides to which a worker may be exposed, assuming that he works 8 hours a day, S days a week and 50 weeks a year. PARTICULATE MATTER------------------------A suspension of fine solid or liquid particles in air, such as dust, fog, fume, mist, smoke, or sprays. Particulate matter suspended in air is commonly known as an aerosol. PNEUMOCONIOSIS-PRODUCING DUST--Dust, which when inhaled, deposited, and retained in the lungs, may produce signs, symptoms and findings of pulmonary disease. RESISTANCE--------------------------------------- Opposition to the flow of air, as through a canister, cartridge, particulate filter, or orifice. RESPIRABLE--------------------------------------- Fit to breath. RESPIRATOR--------------------------------------- A device designed to protect the wearer from inhalation of harmful atmospheres. (see Table 1 t 1) SELF-CONTAINED BREATHING APPARATUS------------ -------------------see respirator SORBENT-------- -------------------------------------A material which removes toxic gases and vapors from air inhaled through a canister or cartridge. SPRAY------------------------------------------------- A liquid mechanically produced particle with sizes generally in visible range. SUPPLIED-AIR RESPIRATOR' See respirator. SUPPLIED-AIR SUIT--..............-----A one or two piece suit that is impermeable to most particulate and gaseous contaminants and is provided with an adequate supply of respirable air. TLV------------------------------------------ ----Threshold limit value. A table of these values and accompanying precautions is published annually by the American Conference of Governmental Industrial Hygienists. TOXIC DUST----------------------------- ---------Dust that may be harmful to the respiratory system or to other parts of the body through passing from the respiratory tract into the blood stream. VALVE (air or oxygen)---------A device which controls the direction of air or oxygen flow or the rate and pressure at which air or oxygen is delivered, or both. VAPOR--------------------------------------- ---------- The gaseous state of a substance that is solid or liquid at ordinary temperature and pressure. WINDOW INDICATOR------------------ --------- A colorimetric indicator for gas mask canisters which denotes the service life for a particular gas.