Document 5kooDrz9vQzk1pELzEBYXn038

Federal Register / Vol. 51. No. 119 / Friday, June 20. 1966 / Rules and Regulations 22745 . 18. In addition,'because the sealing of-the replaced with a high-efficiency particular during the test period. A combination I respirator may be affected, qualitative fit filter supplied by the same manufacturer.. cartridge or canister with organic vapor and i testing shall be repeated immediately when , d. The sampling instrument shall be high-efficiency filters shall be used when . the test subject haa a: selected so that a strip chart record may be available for Die particular mask being (1) Weight change of 20 pounds or more, made of the test showing the rise and fall of tested. The test subject shall be given an (2) Significant facial scarring in the area of challenge agent concentration with each opportunity to smell the odor of isoamyl / the facepiece seal,' inspiration and expiration at fit factors of at acetate before the test is Conducted. (3) Significant dental changes; i.e.; multiple least 2,000. (2) Irritant fume test. When using hlgh- extractions without prothesis, or acquiring dentures, e. The combination of substitute airpurifying elements (if any), challenge agent, efficiency filters, the test subject should be unable to detect the odor of irritant fume t (4) Reconstructive or cosmestic.surgery, or . and challenge agent concentration In the test (stannic chloride or titanium tetrachloride (5) Any other condition that may Interfere chamber shall be such that the test subject is ventilation smoke tubes) squirted into the air with facepiece sealing. not exposed in excess of PEL to the challenge near the most vulnerable portions of-the C. Recordkeeping !> A summary of all test results shall be agent at any time during the testing process. f. The sampling port on the test specimen respirator shall be placed and constructed so facepiece seal. The test subject shall be instructed to close her/his eyes during the test period. maintained in each office for.3 years. The that, there is no detectable leak around the c. The test subject may enter the summary shall include; port, a free air flow, is eliowed into the quantitative testing chamber only if she or he (1) Name of.test subject. sampling line at all times and so there Is no has obtained a satisfactory fit as stated in : (2) Date of testing. interference with the fit or performance of the (3) Name of test conductor. respirator. . (4) Respirators selected (indicate g. The test chamber and test set-up shall manufacturer, model, size and approval - - .permit the person administering the test to number). observe one test subject inside the chamber (5) Testing agent during the test: Quantitative Fit Test Procedures h. The equipment generating the challenge atmosphere shall maintain the concentration 1. Genera). of challenge agent constant within a 10 a. the method applies to the negative- percent variation for the duration of the test pressure honpowered air-purifying i. The time lag (interval between an event respirators only. and its being recorded on the strip chart) of b. The employer shall assign one Individual the instrumentation may not exceed 2 who shall assume the full responsibility for seconds. implementing the respirator quantitative fit j. The tubing for the test chamber test program. atmosphere and for the respirator sampling . 2. Definition.. port shall be the same diameter, length and 4.b. of this Appendix. d. Before the subject enters the test chamber, a reasonably stable challenge agent concentration shall be measured in the test chamber. e. Immediately after the subject enters the test chamber, the challenge agent concentration Inside the respirator ahall-be measured to ensure that the peak penetration does not exceed 5 percent for a half-mask and 1 percent for a full facepiece. f. A stable challenge agent concentration shall be obtained prior to the actual start of testing. (1) Respirator restraining straps may not be overtightened for testing. The straps shall be a. "Quantitative Fit Test" means the material. It shall be kept as short as possible. adjusted by the wearer to give a reasonably \ measurement of the effectiveness of a The smallest diameter tubing recommended comfortable fit typical of normal use. V respirator seal in excluding the ambient by the manufacturer shall be used. 5. Exercise Regime. Prior to entering the atmosphere. The test is performed by k. The exhaust flow from the test chamber test chamber, the test subject shall.be given dividing the measured concentration of shall pass through a high-efflclency filter complete instructions as to her/his pari in the challenge agent in a test chamber by the before release to the room. test procedures. The test subject shall measured concentration of the challenge l. When sodium chloride aerosol is used, perform the followfng:exercises, in the order agent inside the respirator facepiece when the relative humidity inside the test chamber giveiu for each Independent test the normal air purifying element has been shall not exceed SO percent.. a. Normal'Breathing (NB). In the normal, replaced by an essentially perfect purifying . 4. Procedural Requirements. standing position, without talking, the subject element. a. The fitting of half-mask respirators shall breathe normally for at feast one b. "Challenge Agent" means, the air should be started with those having multiple minute.. contaminant introduced into a test chamber - sizes and a variety of interchangeable .. Deep Breathing (DB). In the normal so.that its concentration inside and outside cartridges and canisters such as the MSA standing position the subject shall do deep the respirator may be compared. Comfo U-M. Norton M. Survjvair M, A-0 M, breathing for at least one minute pausing so c. 'Test Subject" means the person wearing or Scott-M. Use either of the tests outlined as pot to hyperventilate. the respirator for quantitative fit testing. d. "Normal Standing Position" means below to assure that the facepiece ia properly . c. Turning head side to side (SS)..Standing adjusted. in place the subject shall slowly turn his/her standing erect and straight with arms down ' (1) Positive pressure test. With the exhaust head from side between the extreme along the sides and looking straight ahead. port(s) blocked, the negative pressure of . positions to each aide. The head shall be held . e. "Pit Factor" means the ratio of challenge slight inhalation should remain constant for at each extreme position for at least 5 agent concentration outside with respect to ' several seconds. seconds. Perforin for at least three complete the inside of a respirator inlet covering - (2) Negative pressure test. With the intake cycles. . (facepiece or enclosure). port(s) blocked, the negative pressure slight d. Moving head up and down (UD). 3. Apparatus. inhalation should remain constant for several Standing In place, the subject shall slowly a. Instrumentation. Com oil, sodium seconds. move his/her head up and down between the chloride or other appropriate aerosol b. After a facepiece is adjusted, the test extreme position straight up and the extreme *t t. generation, dilution, and measurement subject shall wear the facepiece for at least 6 systems shalf be used for quantitative fit test. minutes before conducting a qualitive test by b. Test chamber. The test chamber shall be . using either of the methods described below position straight down. The head shall be held.at each extreme position for at least 5 seconds' Perform for at least three complete ` large enough to permit all test subjects to and using the exercise regime described in cycles. freely perform all required exercises without S.a.. b., c., d, ande. e. Reading (R). The subject shall read out distributing the challenge agent concentration (1) Isoamyl acetate test When using slowly and loud so as to be heard clearly by- or the measurement apparatus. The test organic vapor cartridges, the test subject who the test conductor or monitor. The test chamber shall be equipped and constructed can smell the odor should be unable to detect subject shall read the "rainbow passage" at so that the challenge agent is effectively the odor of isoamyl acetate squirted into the the end of this section. isolated from the ambient air yet uniform in . air near the most vulnerable portions of the f. Grimace(G). The test subject shall, concentration throughout the chamber. - facepiece seal. In a location which is grimace, smile, frown, and generally contort c. When testing air-purifying respirators, separated from the test area, the test subject the face using the facial muscles. Continue the normal filter or cartridge element shall be 9holl be instructed to close her/his eyes for at least 15 seconds. i ; -Jil *1. T'li jiV-; i I l' I 5 GLEASON-000993