Document gELE08naa8GqM9N55JNL3OqON

OSHA SAMPLING DATA SHEET //7a Substance: Vinyl chloride. Standard: 29 CFR 1910.93q, permanent standard of October 4, 1974 1. Limits of exposure: a. 8 hour time weighted average (TWA) b. 15 minute ceiling average c. 15 minute ceiling for those electing * not to wear respirators 1 ppm 5 ppm 25 ppm 2. Action level: 8 hour TWA 0.5 ppm Sampling Equipment: A calibrated personal sampling pump whose flow rate at 50 ml/min is accurate within + 5% and activated coconut shell tubes containing two sections of 20/40 mesh activated charcoal separated by a 2-mm portion of urethane foam. ( Qualifications: y Samples shall be collected only by or under the direction of Compliance Safety and Health Officers (CSHOs) who are Industrial Hygienists. Sampling Rate: 50 ml/min for all samples Sample Size: 1. TWA samples: a. 5 liter maximum at concentrations below 200 ppm; maximum duration 100 min. b. 2 liter maximum at concentrations above 200 ppm; maximum duration 40 minutes. NOTE: In some cases it may be necessary to estimate the vinyl chloride concentration with a portable direct reading instrument to determine the proper volume of air to sample. 2- - 2. Ceiling average samples: 750 milliliters; 15 min. duration There should be no variation from 15 minutes unless the variation is justifiable. Sampling Procedure: (1) Employee exposures are determined by collecting air samples from a worker's breathing zone using personal samplers. (2) TWA 8-hour average exposures are determined by collecting a series of consecutive personal air samples that completely cover the duration of exposure in the 8-hours. (3) Fifteen minute ceiling average exposures are determined by collecting full 15 minute period personal air samples. (A) Which employee exposures to measure may be determined by screening the concentration of vinyl chloride in the workplace area with a direct reading instrument. (5) Immediately before sampling, both ends of two charcoal tubes are broken so as to provide openings at least one-half the internal diameter of the tubes. (6) The first charcoal tube is positioned in the tube holder with the smaller backup section of charcoal being positioned nearest the pump. The second charcoal tube serves as a breakthrough indicator and is connected with a small, i.e 0.5 inch, piece ;i' "iof Tygon tubing to the outlet of the plastic charcoal tube holder with the smaller section of charcoal being positioned nearest the pump and connected to the main sample line leading to the pump. Both tubes must be in a vertical position during sampling to avoid channeling and subsequent premature breakthrough of vinyl chloride. (7) Air being sampled must not be passed through any hose or tubing before entering the first charcoal tube. (8) Set the flow rate at approximately 50 ml/min and record the initial counter number. Sample for an appropriate amount of time and record the final counter number. The sample volume is obtained by multiplying the number of counter strokes times the cc/stroke factor. Record the date, location, temperature, pressure and the tube number. 00000^285 vvt -3- (9) Immediately after sample collection separate the sample tube from the backup tube and cap the tubes with the supplied plastic caps. Put a sample seal on each tube and label the tubes with matching numbers. Designate the sample tube by the letter "S" and the backup tube by the letters "BU". For example, the tubes used to collect the first sample of the day would be labeled 1-S and 1-BU. (10) Include one blank charcoal tube with every 20 samples (or one with each lot of samples if less than 20 samples are taken). Handle the blank in the same fashion as the others with the exception that no sample is collected on it. The ends are broken and the tube is immediately capped and prepared for shipping. Label the tube as a blank. The backup tubes are not to be considered as blanks. Analytical Procedure: % Vinyl chloride is desorbed from activated coconut shell charcoal with carbon disulfide and analyzed using a gas chromatograph with a flame ionization detector. The primary charcoal tube is analyzed as the sample (both front and back sections together) and the backup charcoal tube is analyzed as the breakthrough indicator. Minimum to be Reported: 0,25 ppm ^ NOTE: Lesser concentrations will be reported as less than 0.25 ppm, except where none is detected it will be reported as "none detected". Special Considerations: (1) Do not ship bulk samples of polyvinyl chloride or copolymers of vinyl chloride to the laboratory for VC analysis. Our procedure deals with airborne VC. (2) "Where two or more compounds are known or suspected to be present in the air, transmit this information, including their suspected identities, with the sample to the laboratory. (3) The sampling places a heavy load on the sampling pump due to the high resistance of-two charcoal tubes in series. Therefore, do not operate the pumps more than 8 hours continuously without full^ recharging the battery. VVC 000004-206 CUMULATIVE SUPPLEMENT TO JULY 1974 EDITION OF NIOSH CERTIFIED PERSONAL PROTECTIVE EQUIPMENT Single copies are available from: Office of Technical Publications National Institute for Occupational Safety and Health Post Office Building Cincinnati, Ohio 45202 Please include a self-addressed mailing label to assist us JANUARY 1975 Gas Masks fj>\ 3. MSApart numbers 461481, 461482, 461483, 461484, 461485, and 461486 gas masks (with part number 461480 canister) for respiratory protection against vinyl chloride. Approval TC-14G-84, issued to Mine Safety Appliances Co., December 30, 1974. 4. Scott part numbers 601211-17 and 601221-17 gas masks (with part number 084-VCL canister) for respiratory protection against vinyl chloride. Approval TC-14G-85, issued to Scott Aviation, December 30, 1974. 5. Welsh part numbers 7820, 7820S, 7829, and 7829S gas masks (with part number 7800-2VC(TC-14G-91) canister) for respiratory protection against vinyl chloride. Approval TC-14G--91, issued to Welsh, A Textron Company, January 17, 1975. U.S. DEPARTMENT OF HEALTH, EDUCATION, AND WELFARE Public Health Service Center for Disease Control National Institute for Occupational Safety and Health Morgantown, West Virginia 26505 The following respiratory protective devices have been approved by the U.S. Department of the Interior, Mining Enforcement and Safety Administration, and the U.S. Department of Health, Education, and Welfare, National Institute for Occupational Safety and Health, since July 19, 1974. VVC 000004-290 Applicable Approval Regulations RiDCRAI. RfSlfr^n, VOL 3V, NO. 227--FRIDAY, NOVEM8ER 27, 1974 Title 30--Mineral Resources CHAPTER I--MINING ENFORCEMENT AND SAFETY ADMINISTRATION, DE PARTMENT OF THE INTERIOR SUBCI-'APTrR B--PCSPIRATOKY PROTECTIVE AfJ'ACMUS: TESTS FOR PERMISSIBILITY; FEES PART 11--RESPIRATORY PROTECTIVE DEVICES; TESTS FOR PERMISSIBILITY; FEES Deadline Extension The Secretary of the Interior, through, the Mining Enforcement and Safety Ad ministration (MESA) and the Secretory of Health, Education, and Welfare, through the National Institute for Oc cupational Safety and Health. iNLOSH), conduct a testing and approval program for respirators used in hazardous atmos pheres pursuant to me regulations con tained in 30 CEPv Part_l 1 issued jointly by the Secretaries 137 ;?. 6244). On April 9. 107-1, following a public hearing on the issue. Part. 11 was amended (39 FP. 12SG-3) to provide that until September 30. 1074 respirators ap proved under Part 11 or a Bureau of Mines respirator schedule would be ap proved. for use in hazardous atmospheres. The amendments provided that after September 30, 1974. only respirators ap proved under Part 11 or manufactured pursuant to a quality control plan ap proved under Part II would be approved for such use except that ii a respirator was purchased before September 30. 1974 and fit the time of purchase was ap proved for use under o Bureau of Mines respirator schedule, it would be approved for use until the dates specified In the regulation. The amendment further pro vided that after March 31, 1575 only respirators approved under Part 11 would be approved for use except that if a res pirator was purchased before March 31 and at that time was approved under a Bureau of Mines respirator schedule and manufactured pursuant to an approved quality control plan, it would be approved for use until the dates specified in the regulation. Following adoption of the April 9 amendments, respirator manufacturers submitted quality control plans for BIOSH review and approval. While some plans were submitted in a timely manner, a number was not received un til after July 1974. and a substantial number has not yet been received. Duo to the complexity of the plans and tho shortage of qualified manpower to rcVlew these detailed plans, there are de vices for which, a quality control plan bu been submitted but not reviewed *nd unproved. The result i* that, unless the regulations are amended, after Sep tember 30 these devices .will no longer be permitted to be sold as approved equipment. Moreover, it is anticipated that a similar situation will develop with respect to the March 31, 1975 deadline. The purpose of these amendments Is to eliminate September 30, 1974 as a deadline date and to extend the March 31, 1375 date described above to June 30, 1975. Ey that time NIOSH will have had on opportunity to review all of the qual ify control plans previously submitted as well os those anticipated to be received. (1) For which a certificate of approval has been issued under thispart; or (2) Fabricated, assembled or built un der any approval or any modification thereof Issued by the U.S. Bureau of Mines. Department of the Interior, in accordance with the schedules set forth In this paragraph: (i) Self-contained Breathing Appara tus, Bureau of Mines Schedules 13, March 5, 1919: 13A, January 21, 1930; 13B. August 12, 1935; 13c, July 9, 1945; ^liD, September 22, . 1958. and 13E, July 19,1968. Respiratory equipment already in the possession of Indies trial users or acquired on or before June 30, 1975 and previous ly approved under Bureau of Mines res pirator approval schedules will continue to be approved for use in accordance (ii) Supplied-air Respirators, Bureau of lvlir.es Schedule 193. April 19. 1955. (iii) Filter-type Dust. Fume, and Mist Respirators, Bureau of Minas Schedule 21B, January 19,1965. <iv) Nonemergcr.cy Gas Respirators, with the dates adopted In flic April 9, 1574 amendments (39 TO 12S64). Finally, since the requirements for the approval and certification of gas masks are under revision, the deadline date for the approval of those devices has not been established and those devices have been excepted from the June 30, 1975 dead line date. A deadline date for approval and certification of eras masks under Parr 11 will be adopted in the future. Since it is essential that approved respiratory protective devices remain available to industrial users, the Depart ments find that good cause exists for omitting notice of proposed rulemaking and postponement of the effective dace in the issuance of the amendmentv'to Paxt ll. Accordingly, these amendments, as set forth below, will be elective on September 30,1974. Bureau of Mines Schedule ?.3B, August 4, 1959. (b)After June 30. 1975. respirators or combinations of respirators other titan gas masks shall be approved for use in hazardous atmospheres where such respirators or combinations of respirators are maintained In an approved condi tion and are tha same in all respects ?.s those respirators for which a certificate nos been issued ur.ccr this per:: -rcvtded, That if a respirator is pui chased on or before June 39. 1975 and at tire time of purchase was the same in all re spects as a respirator approved under a Bureau of Mines Schedule, it shall be approved for use until the following dates: Until March 31, 1079, for self-coot* Lnei breathing apparatus aaoroTed under Bureau of Mines ^Schedules 13-13 F. Fart 11 of Title 30, Code of Federal Regulations is amended and revised os set forth below. Dated: November 12,1974. Jack \V. Carlson; Assistant Secretary of the Interior Dated: November 13, 1974. Caspar \Y. Weinberger, Secretory of Health, Education, and Welfare. In Part 11, a new } 11.2-1 Is added and s 11.2 Is revised to read as follows: Until March 31.- is30. for eupplicd-alr reeptr.vtora approved under Bureau of Mines Schedule 19B. Until March 31. 1973, for filter-type du*t. fume, ami mist respirators aoproved under Bureau of Mines Schedule 21B and for noacmcrgcncy gas respirators approved under Bureau of Mines Schedule 23B. 3 11.2--1 Approved gas masks. Gas masks shall to approved for usa In hazardous atmospheres wnere such gas masks are maintained in r.n ap proved condition and are the same in all respects ftr- thoce* gas rr>p---'s: (a) For which a certificate of ap 11.2 Approved respirators oilier than proval has been issue d under this or gas masks. (b) Fabricated, a.i.cmblvd or built un (a) Until June 30, 1975, respirators or combinations of respirators other than gas masks shall be approved for use In der any Rpj.rovaJ or my modification thereof 1-ssut-d by the U,3. Bureau of Mines, Department of the Interior in ac hazardous respirators atmospheres where such or combinations of respira cordance with Bureau of UlC* HF, April 23. 1255. Mines eched- tors arc maintained In an approved con* (Secs. 202(b), ?0. 303. 01 5,-tat. 753. 754. E03 ditlon and arc the some in all respects as (50 V.S.C. euhh). 844, U"'7>; fin*. 2, 3. C. 38 those respirators: BUt. 370, tut huieudcO 1*7 hut. 6SI <33 UB.C. . ft. 7): aoc. (g>. b-t l ICOO (20 use. Ml(E))) VVC 000004291 irRDoc*7l-27363mcd 1 t-21-74;ft:45 nm| fEDCRAl REGISTER, VOL 39, NO. 251--MONDAY, DECEMBER 30, 1974 Title 30--Mineral Resources CHAPTER I--MINING ENFORCEMENT AND SAFETY ADMINISTRATION, DE PARTMENT OF THE INTERIOR PART 11--RFSPIRATORY PROTECTIVE DEVICES; TESTS TOR PERMISSIBILITY; FEES Respiratory Protection Against Exposure to Vinyl CSilorida The Secretary of the Interior, through the Mininc Enforcement and Safety Ad ministration. and the Secretory of Health, Education, and Welfare, through tho National Institute for Occupational Safety and Health, conduct a testing raid approval program for respirators used, Jn occupationally hazardous atmospheres pursuant to regulation contained in tills part. On October 4. 1974. the Occupational Safety and Health Administration, fol lowing a public heroin?: on the matter, promulgated a standard for the ccr.trol of employee exposure to vinyl chloride. The standard provides that respiratory protection shall be provided at the re quest of employees exposed to 25 ppm or less vinyl chloride ana rc-mures that respirators shall bo selected from those approved under ?ars 11. tipecmcaliv, the bta.lUai'u i C-.I Ui I fS. U.T.O"? CUlfir things, that where the atmospheric concentra tion of vinyl chloride is not over 23 ppm, any gas mask with front- or backmounted canister or powered air-purify ing* respirator with canister which pro vides a sei-vice life of at least four hours may be used, end where the concentra tion Is not over 10 ppm. any chemical cartridge respirator with an organic vapor cartridge which provides a ser.lco . life of at least one hour may bo used. The Standard further requires a program to ussuro Umely replacement of canisters or cartridges. The purpose of the amendments set forth below is to establish special pro cedures for tasting vinyl chloride res pirators and to adopt a requirement that any canister or cartridge used to protect employees against exposure to vinyl chlo ride, have au end-cf-service-life Jcdi! cator. Unlike many other gases, vinyl Chloride has no Inherent warning prop. crtlcs. Where a gas has an odor and The delay In tbis requirement is to give the institute an opportunity to test the elfectivencss of the indicators. Section 11.205 further provider that after De cember 31. 1375--when respiratory pro tection at 05 pp;r. or less becomes manda tory--respirator* without an end-of- servicc-hfc indicator v/ij] not ba consid ered approved for use by employees exposed to vinyl chloride. There Is no delay in the effective date for the special tests adopted for vinyl chloride respirators. t* Sin.ce it. Is essential that there arc available approved respiratory devices for protection against exposure to vinyl chloride the Departments Jmd that good cause exists for omitting notice of pro posed amendments io Part H. Accord ingly, these amendments, as set forth below, will be effective on December 30, 1974. Dated: December 24,3574. Jack W. Carlson-, Secretory of the Interior. Dated: December 10,1974. Caspar W. Weinberger, Secretory of fleclth, Zdvcation-j In Part n a new Subpart N for special use respirators is established and Sec tions 11.20C--11.203 applicable to vinyl chloride respirators are added to read as follows: Subpart N--Special Use Respirators See. n.200 Vinyl chloride respirators; descrip tion. 11.201 TteouLred components. 11.202 Giv* masks; requirements and tests. 11.203 11.204 fl.205 11.206 Chcmtcal-cartnciye respirators; re quirements and tests. Powered a!r-pui ify-.ng respirators; requirements and tesvi. Requirements ior cnd-of-servlce-Hfo indicator. Quality control requirements. U--07 Labeling requirements. 11.203 row. Attthobitt: Sees. 202fhl. 204, 508. 83 Slat 3. 754, 803 (30 C5.C. 812(h), 844. 57); ^3- 2. 3. 5. 30 Slat. 300. as amended 37 Etat. 631 130 U5 C. 3. S. 7); tec. dig), 54 Stat. 1600 IS? tf-S.C. 657(g) >. vhere a canister or cartridge is nearing or is at the end of its useful life, the v worker is aware because he can smell th gas. Vinyl chloride is odorless and color less. Thus, with due regard for tho wearer's health, any cartridge or can Ister should possess an cnd-of-serrlcelife Indicator. Section, 11.205 provides that after June 30, 1975, each canister or cartridge submitted for approval must have an cnd-of-service-lUe indicator. 5 11.200 Vinyl chloride respirators; de scription. Vinyl Chloride respirators. Including all completely itssemcled respirators which arc designed for use as respira tory prctcclion during entry Into and f-cape from vinyl chloride atmosphere* containing adequate oxygen to support hfe, are described according to their con struction ao follows: (a) Front-mounted or back-mou; K&s masks; (b) Chin-style gas masks; (c) Chemical-cartridge respirators <d) Powered air-purlfylng respirat and. (e) Other devices, including combtloQ respirators. 31.201 Inquired component. (a) Each vinyl chloride respirator scribed In 11.200 shall, where ito.de: requires, contain the following com: nent parts: (1) Facepiece; (2) Canister with end-of-serviceindicator; (3) Cartridge with end-of-servlce-. Indicator; (4) Harness: (5) Attached blower; and. (6> Breathing tube. (b> The components of each vV cliloride respirator shah meet the n;. mum construction requirements set fo: in Subpart G of this part. 11.202 Cas masks; requirements n tests. (a) Except for the tests proscribed 11.102-5, the minimum recn:rc-r*o"' periormance tests for gas masks. p: scribed to Subpart I of this part, a applicable to vinyl chloride gas masks. (b> The following bench tests arc a plicable to canisters designed for use w: gas masks for entry into and e-sea from vinyl chloride atmospheres cr talnine adequate oxygen to support hf <1) Four canisters will be equilibratat 255* C by passing S5w5 percent rob tive humidity air through them at t liters per minute for six hours, (2) The equilibrated canisters will 1 rescaled, kept in an upright position : room temperature, and tested accorc ing to subparagraph (3) of tills parr graph within IS hours. (3) The canisters equilibrated ar. stored as described in subparagraphs U and (2) of this paragraph will be teste on an apparatus that allows the to: atmosphere at 85m5 percent rciauv humidity and 252:5* C to enter the cards ter continuously at a concentration c 25 ppm vinyl chloride monomer at total flow rate of 64 liters per mlnuu (4) Tho maximum allowable penctra lion after six hours of testing accorchr. to subparagraph (3) of this paragrap. shall not exceed 1 ppm vinyl chloride. VVC 000004292 <c) Where canisters arc submitted for testing and approval with a service life of more than lour hours, the period of time for tc-slinp for vinyl chloride pene tration will be performed at 150% of the sendee life specified in the manu facturer's application. Example: If a manufacturer requests approval of a, Tespirntor for six hours use against ex posure to vinyl chloride, the maximum allowable penetration after nine hours of testing shall not exceed 1 ppm.vinyl chloride. 11.203 Chemical-earl ridge respirators; requirement.' and (a) Except for the tests prescribed In 11.1G2-8, the minimum requirements and performance tests for cl'.emical-car tridge respirators proscribed in Subpart 1> of tilts part arc applicable to vinyl ciiloride chemical-cartridge respirators. (b) The followin'; bench t-csts are ap plicable to cartridges designed for use with chemical-cartridge respirators for entry Into and escape from vinyl ciiloride atmospheres containing adequate oxygen, to support life: (3) Where two cartridges arc used In parallel on c chemical-cartridge respira tor, the bench test requirements will ap ply to the combination rather than the individual cartridges. (2) Four cartridges or pairs of car tridges will be equilibrated at 25:r5* C by passing S5;t5 percent relative hu midity air through them r-t 25 liters per minute for six hours. (3) The equilibrated cartridges will be rescaled, kept in an upright petition, at room temperature, -and tested accord ing to subparagraph (4) of this para graph within IS hours. <4) The cartridges equilibrated ar.a stored as described in subparagraphs (1), .(2). and f3) of this paragraph will be tested on an apparatus that allows the lest atmosphere at S5:5 percent relative humidity and 255e C. to enter the cartridges or pairs of cartridges continuously at a concentration of 10 ppm vinyl chloride monomer at a total flow' rate of 64 liters per minute. <55 The maximum allowable penetra tion after two hours of testing according to subparagraph (4) of this paragraph shall not exceed 1 ppm vinyl chloride. 11.204 Powered njr-purif>inc respira tors; requirements aiul tests. <a> Except for the tests prescribed In 11.162-8, the minimum requirements and performance tests for powered airpurifying respirators prescribed In Sub part L of this part are applicable to vinyl chloride powered air-purifying respira tors. (b> The following bench tests are ap plicable to cartridges designed for use With powered air-purifying respirator* lor entry Into and escape from vinyl chlor'de atmospheres containing ade quate oxygen to support Hie. (U Four cartridges will be equili brated at C by parsing percent relative humidity air through them at 115 liters per minute lor tight- fitting facepieces and 170 liters per min ute for loo-sC-fitting hoods and helmets, for six hours. <2) The equilibrated cartridges will be rescaled, kept in an upright position at room temperature and tested according to subparagraph (3) of this paragraph within IS hours. (3) The cartridges equilibrated and stored os described in subparagraplis (1) and (2) of tills paragraph will be tested on'em apparatus that allows the test atmosphere at 85^:5 percent relative humidity and 255a C to enter the cart ridge continuously at a concentration of 25 ppm vinyl chloride monomer at a total flow rate cf 115 ht-crs per mlnuto for tight-fitting facepieces and 170 liters per minute for loose-fitting hoods fcnd helmets. (4) The maximum allowable penetra tion after six hours of testing according to subparagraph (3) of tills paragraph shall not exceed 1 ppm vinyl ciiloride. 11.203 llcqmrc-incnts for service-life indicator. cntl-of- fa) .After June 30, 1075, each canister or cartridge submitted for testing and approval In accordance with 5 11.202, and 11.203, and 11.204 shall be equipped with a canister or cartridge end-ofservioe-hfc indicator which shows a satisfactory Indicator change or other obvious warning before 1 ppm vinyl chloride penetration occurs. The indi cator snail show such change or afford such warning at fi0d:10 percent of the total service life to 1 ppm leakage, as de termined by continuing each test de scribed in paragraphs <b) of each of 55 11.202. 11.232, and'11.204 of tills Sub part until a 1 ppm leakage of vinyl ciiloride occurs. After December 31. 1975. a cartridge or canister without an end- of-service-life indicator will not be con sidered approved for use by employees exposed to vinyl chloride. (b) The applicant si mil provide suf ficient pretest data to verify the per formance of the end-of-semce-life indi cator required In paragraph (a) of this Section. 11.206 Quality control requirements. (a) In addition to the construction and performance requirements specified in Sections 11.201, 11.202. 11.203, 11.204, and 11.205 of tills Support, the quality control requirements in paragraphs tb), (c)/and (d) of utils section apply to ap proval of gas masks, chemical cartridge respirators, and powered air-purifying respirators for entry into and escape from vmyl chloride atmospheres containin*; adequate oxygen to support Ufe. tb) The respirators submitted for ap proval as described In paragraph (ai of this Section sliall be accouipanied by % complete quality control plan meeting the requirements of Subpart E of this Part. (c) The applicant shall specify in tho plan that a .sufficient number o: .vuSes wdl be drawn from each bull: con'.?.:r.f-r of sorbent material and th>t, v.iiera acti vated carbon is used, the foilowir.g spe cific tests will be performed: 1. Apparent density, 2. Iodine number, 3. Moisture content, 4. Carbon tetrachloride number, and, 5. Mc-sh size. Such tests shall be performed in a quantity necessary to assure continued r.aririactory conformance of the canisters hi id cartridges to the requirements of kins Uufcpart. (d) Final performance qua'ity con trol tests on tiie complete canisters and cartridges shall be accomplished using the bench tests and procedures pre scribed in 11.202, 11.203, 11.204. and 11.205 of this Subpart. 11.207 Labeling requirements. A warning shall be placed on the label of each gas mask, chemical-cartridge respirator, and powered air-purifying respirato**, and on the label of each ccr.jster and cartridge, ajeiting me wearer to the reed for a filling text in accord ance wnh the manufacturer's facepiece fitting instructions, providing se'-rico life information, providing specific :n>*rue- wearer may communicate to P'lCSH any difficulties that may be experienced la the design and performance o: any gas mask, chemical-cartridge respirator, or powered air-purify hog respirator ap proved under the requirements of tins Subpart. The service lives o; respirators meeting the test requirements oi thus Subpart shall bo specified as follows: (8) Chemical-cartrldge 1 hour respirator. (b) Gas mask ____________ 4 hours (e) Powered alr-purifyLag res pirator. 4 hours (d) Where the service life of a res pirator is approved for more than four hours, the sendee life for which the respirator has been approved will bs specified. 11-208 Fees. The following fees shall be charged for the examination. Inspection, r.r.d testing of complete assemblies and com ponents of respirators described in 11.200 and 11.201 of this Subpart. (a) Complete e;m mask .......... 81.100 (D) Complete cbeaucAt-car- trldgc respirator. (e) Complete powered alr- 1.150 purlfylug respirator. 1.500 (d) Canister or cartridge ouly. 750 IPS Doc.74-30352 Filed 12-27-6.45 am) ^O.V COVERNMENT fKUtriHO orfICL <975-657*600/5531 Region No. 5-H VVC 000004293 Vim CHLORIDE IN AIR Physical and Chemical Analysis Branch;' Analytical Method In February 1974, shortly after NIOSH became aware of the carcinogenic hazard of vinyl chloride, a research program was implemented to develop sampling and analytical procedures for vinyl chloride. In response to an OSHA request and based upon a thorough literature search, NIOSH at that time recommended sampling vinyl chloride in gas collecting tubes and subsequent analysis by gas chromatography. While the glass tube is less susceptible to sampling errors, there are certain disadvantages which led NIOSH to investigate alternate methods of sampling. The result of our research effort has been a method in which vinyl chloride is collected on char''op.1 tubes, desorbed and determined by gas chromatography. Enclosed is a copy of P&CAM No. 178 U.S. DEPARTMENT OF HEALTH. EDUCATION, AND WELFARE Public Health Service Center for Disease Control National Institute for Occupational Safety and Health VVC 00000429A i NIOSH CLASSIFICATION OF ANALYTICAL-METHODS Physical and Chemical Analysis Branch Division of Laboratories and Criteria Development Class A--Recommended--A method which has been fully evaluated and successfully collaboratively tested by a selected group of laboratories. Class B--Accepted--A method which has been subjected to a thorough evaluation procedure in the NIOSH laboratory and found to be acceptable. Class C--Tentative--A method which is in wide use and which has been adopted as a standard method or recommended by another Government agency or one of several professional societies such as ACGIH, AOAC, AIHA, ASTM or ISC. Class D--Operational--A method in general use or approved by most professional industrial hygiene analysts but has not been thoroughly evaluated by NIOSH or any professional societies. Class E--Proposed--A new, unproved or suggested method not previously used by industrial hygiene analysts but which gives promise of being suitable for the determination of a given substance. December 17,'1973 4 vvc 000004295