Document KoMLB54xqJzKdEDJBBrjYaqx

22766 Federal Register / Vol. 51. No. 119 / Friday, June 20. 1986 / Rules and Regulations Alternative passages which serve the seme purpose may also be used. vi. Jogging in place. vii. Breathe normally. Rainbow Passage When the sunlight strikes raindrops in the air. they act like a prism and form a rainbow. The rainbow is a division of.white light into many beautiful colors. These take the shape of a long round arch, with its path high above, and its two ends apparently beyond the horizon. There is. according to legend, a boiling pot of gold at one end. People look, but no one ever finds it. When a man looks for something beyond reach, his friends say he is looking for the pot of gold at the end of the rainbow. 5. Each test subject shall wear the respirator for at least 10 minutes before starting the fit test. 6. Upon entering the test chamber, the test subject shall be given a 6 inch by 5 inch piece of paper towel or other porous absorbent single ply material, folded in half and wetted with three-quarters of one cc of pure IAA. The test subject shall hang the wet towel on the hook at the tpp of the chamber. 7. Allow two minutes for the IAA test . concentration to be reached before starting the fit-test exercises. This would be an appropriate time to talk with the test subject, to explain the fit test, the importance of cooperation, the purpose for the head exercises, or to demonstrate some of the exercises. 8. Each exercise described in #4 above shall be performed for at tea9t one minute. & If at any time during the test, the subject detects the banana-tike odor of IAA. the test has failed. The subject shaliquickly exit from the test chamber and leave the test area to avoid olfactory fatigue. -10. If the test is failed, the subject shallreturn to. the selection room and remove the respirator; repeat the.odor sensitivity test, . select.and put on another respirator, return lo the test chamber, and again begin the .' procedure described in the c(4) through c(6) above. The process .cbhtihu.es until a respirator that fits well has been found. Should the odor sensitivity test be faded, the subject shall wait about 5 minutes before retesting. Odor sensitivity will usually have returned by. this time. 11: If a person cannot pass the fit test described above wearing a half-mask respirator from the available selection, full facepiece models must be used. 12. When a respirator is found that passes the test, the subject breaks the faceseal and takes a breath before exiting the chamber. This is to assure that the reason the test subject Is not smelling the IAA is the good fit of the respirator facepiece seal and not olfactory fatigue.' ,13. When'the test subject leaves the . chamber, the subject shall remove the Saturated towel and return it to-the person . conducting the test. To keep the area from becoming contaminated; the .used towels shall be kept in a self-sealing bag so there is no significant IAA concentration buildupin the test chamber during subsequent tests. 14'. At least two facepieces shall be selected for the IAA test protocol. The test subject shall be given the opportunity to wear nose and mouth area to accommodate the (hem for one week to choose the one which is nebulizer nozzle. more comfortable to wear. 3. The entire screening and testing 15. Persons who have successfully.passed procedure shall be explained to the test this fit test with a half-mask respirator may subject prior to conducting the screening test. be assigned (he use of the test respirator in 4. During the threshold screening test, the atmospheres with up to 10 times the PEL of test subject shall don the test enclosure and airborne asbestos. In atmospheres greater breathe with open mouth with tongue than 10 times, and less than 100 times the PEL (up to 100 ppm), the subject must pass the IAA test using a full face negative pressure respirator. (The concentration of the IAA inside the test chamber must be increased by ten times for QLFT of the full facepiece]) 16. The test shall not be conducted if there is any hair growth between the skin and the facepiece sealing surface. 17. If hair growth or apparel interfere with a satisfactory fit, then they shall be altered.or removed 90 as to eliminate interference and allow a satisfactory fit. If a satisfactory fit is still not attained, the test subject must U9C a positive-pressure respirator such as powered air-purifying respirators, supplied air respirator, or self-contained breathing extended. 5. Using a DeVilbiss Model 40 Inhalation Medication Nebulizer dr equivalent, the test conductor shall spray the threshold check solution into the enclosure. This nebulizer shall be clearly marked to distinguish it from the fit test solution nebulizer. 6. The threshold check.solution consists of 0.83 grams of sodium saccharin. USP in water. It. can be prepared by putting 1 cc of the test solution (see C 7 below) in 100 cc of water. 7. To produce the aerosol, the nebulizer bulb is firmly squeezed so that it collapses completely, then is released and allowed to fully expand. apparatus. 8; Ten squeezes of the nebulizer bulb are 18. If a test subject exhibits difficulty in repeated rapidly and then the test subject is breathing during the tests, she or he shall be asked whether the saccharin can be tasted. referred to a physician trained in respirator 9. If the First response is negative, ten more diseases or pulmonary medicine to determine squeezes of the nebulizer bulb are repeated whether the lest subject can wear a respirator while performing her.or his duties. 19. Qualitative fit testing shall be repeated at least every six months. 20. In addition, because the seating of the respirator may be affected, qualitative fit testing shall be repeated immediately when the test subject has a: (1) Weight change of 20 pounds or more. (2) Significant facia) scarring in the area of the facepiece seal, (3) Significant dental changes; i.e.; multiple . extractions without prothesis, or acquiring dentures. .. (4) Reconstructive or cosmetic surgery, or (5) Any other condition that may interfere with facepiece sealing. D. Recordkeeping. A summary of all test results shall be maintained in each office for 3 years. The summary shall Include: (1) Name of test subject. (2) Date of testing. rapidly and the test subject is again asked whether the saccharin can be lasted. 10. If the second response is negative ten more squeezes are repeated rapidly and the test subject is again asked whether the saccharin can be tasted. 11. The test conductor wilt take note of the number of squeezes required to elicit a taste response. 12. If the.saccharin is not tasted after 30 . squeezes (Step 10), the. saccharin fittest, cannot be performed on the test subiect. 13. If a taste response Is elicited, the test subject shall be asked to take note of the taste for reference In the. fit test. 14. Correct use of the nebulizer means that . approximately 1 cc of liquid is used at a-lime in the nebulizer body. 15. The nebulizer shall be thoroughly rinsed: in water, shaken dry. and refilled at least' every four hours. C. Fit test. {3} Name of the test conductor. 1. The test subject shall don and adjust the (4) Respirators selected (indicate Respirator without the assistancefrom any manufacturer, mode), size and approval person. number). 2. The fit test uses the same enclosure. (5) Testing agent. described in 1IB above. . H. Saccharin Solution Aerosol Protocol A. Respirator Selection. Respirators shall be selected as described in section IB (respirator selection) above, except that each respirator shall be equipped with a particulate filter. " B. Taste Threshold Screening. -1. An enclosure about head and shoulders shall be used for threshold screening, (to determine If the individual can taste saccharin) and for fit testing. The-enclosure. shall be approximately 12 inches in diameter by 14 inches tall with at least the front clear to allow free movement of the head when a 3. Each lest subject shall'wear the respirator for at least 10 minutes before starting the fit test. 4. The test subject shall don the enclosure while wearing-lhe respirator selected in section ID above. This respirator shall be . property adjusted and equipped with a , particulate filter! 5. The test subject may;"not eat. drink (except plain Water), or chew gum for 15 . minutes before the test. 8. A second DeVilbiss Model 40 Inhalation Medication Nebulizer;is used to spray the fit test solution into the enclosure. This / . respirator is worn. nebulizer shall be deafy marked to 2.The test enclosure shall have a three- distinguish It from the screening test'solution - quarter Inch hole in front of the test subject's nebulizer. GLEASON-001014