Document gMgvrQJEGz5zoM446YZ7kLJ

C" - & & 3. Hovenber 10, 1972 J. A. ROBES INDUSTRIAL CHEKEGAL3 DEPARTMENT REPAUHO WORKS ASBESTOS SURVEY This report cover* a survey of 8/15/72 of sen* of tb* asbestoehsnflUng operations at the Repauno Plant. In the insulation shop, asbestos is scored or cut in preparation for its use in the field. -Asbestos is handled only about three to four hours per month in the shop. There are approximately 13 man involved with insulating operations of which 60-70jt of the Insulation handled contains asbestos. With this report is a table shoving the results obtained in this survey. There does not appear to'be & problem coqplying with the time- weighted average allowable concentration of 5 fibers per milliliter of air. This is based upon both the concentrations and the time involved with handling asbestos products. However, the ceiling limit criteria of 10 fibers per milliliter Is either exceeded or is a borderline situation for number of operational procedures. It is pexaiasable for the operators to wear respiratory protection but engineering end other control measures should be contemplated far ' reducing the workers' exposure. . A nunber of items that require attention are as follows: - ~ 1) Wetting asbestos pieces prior to removing doth cover and, if needed, prior to scoring and autting; > y v.- a 2) By reducing the open area between the lower surface of the . band saw table and the exhaust opening, dust collection should improve* ry 3) Consider other means of inproving the dust collection at the source of release rather than relying upon the canopy hoods to clean the air; - 4) In place of brushes and brooms, design attachments for the vacuum line for use in cleanlng-up area; >313 DUP 0903038 SC-DP-04055 J. A. Bobbe 2 Horaster 10, 1972 5 ) Consider relocating point of entry of aaksvp air - aay dust that is not oollacted could be kept continually in action by sir sweeping up Iron tbs floor lerel; ... MS'S.- t, . 6) Clean-up after day's operation or periodically throughout tbs '' *t'iday vblia dust controls arc being ljqproesd upon; - -x'fciA--'; . 7) 1 Place plastic gag in disposal container - wet down waste places > . occasionally - when disposing of asterisk close top to present ; -'.- release of dustf and ... `fVi' jr; * . I* -'V ` , 8), Continue to require use of respirators on all Jobs where asbestos Yx'faaterial*. *** used, irt. rip-out at old aaterlal, insulating, >,*. r vand fabricating (JUp-oct reepoiras use of elr-stpplled respirator*) . ' ' '" *3* - " '^ri,;y ' JOUOMl signed r .^lUCHARB J:' HUtWJC BICHABD J.HQBIAX UGXBTHIAL HTQISBiar ?4:fv,;vV.r. r- > uVa*b ; Attschnsnt DUP 09030^q TABLE OF RESULTS CO e CO DUP 0903040 Semple 4 1 2 3 1* 5 6 7 8 9 Location* Take-off man at table saw Airborne Cone. fibers (> 5u/ml) 9-6 Operator doing cutting on table saw Take-off man on band saw Operator removing insulation rounds from box and subsequent removal of cloth from insulation Operator doing cutting on band saw Same as Sapple 43 Cleanup of area - Take off man > 4.4 9.4 14.3 1 i 19.2 10.0 * Cleanup of area - operator on cutting operation Saspler at 6" above table top - worker using electric shears to cut l/8" thick asbestos cloth 13.3 0.2 Sanple time (minutes) 9-5 9.5 15.0 3.0 A 17-0 17.0 7.5 7.5 77.0 Comments Scoring insulation blocks on table saw - dust was created but was directed downward - exhaust could not handle all of dust - air supply to room redistributed dust throughout room - worker wore Lustfoe 66 approved respirator Same as for Sasple #1 Cutting angles on band saw Using brush and broom for cleanup - exhaust on for period of time but because of floor location of make-up air, the exhaust was shut off - this man also dumped bag with collected asbestos wastes Same general comments as for Sasple 47 except this man rolled up bag on dust collector 1 * All samples were at noae level of indicated operator (except Sample 9) RJHubtak/neh 11/9/72 COPY HACK;..'.- LAMORATORY K0 T OX I S'. LOT Y h N'jULTR IAL MEDICINE November 10, 1972 rZ/ejA* ^/Zu-cA. J- /%c ijC^U ;ct=;al chemical.;: department r.l-A NC wcp.k.c ASRELTOS SURVEY Trir report cover.*; & survey of 8/15/72 of some of the asbestoshanding operations at the Eeoauno Plant. In the Insulation shop, asbestos is stored or cut in preparation for its use in the field. Ante.-.-.os is handled only about three to four hours per month in the -hop. There are approximately 13 men involved with insulating operations of v.".!on oO-7rJt of the insulation handled contains asbestos. : Witr. thin resort ic a table showing the results obtained in this survey. There due.-, not aonear to be a problem complying with the time- veirn-.ed average allowable concentration of 5 fibers per milliliter of air. This is based upon both the concentrations and the time involved vi :.o r.andling asbestos Droducts. However, the ceiling limit criteria of 1C fibers per milliliter lc either exceeded or is a borderline situation for a number of operational procedures. . It Is permiccable for the operators to wear respiratory protection hut engineering anc other control measures should be contemplated for reouc *v the vorherr.* exposure. ? ^ A '.v.T.cer of item: that require attention are as follows: i, vetting uhrztor. niece.-, prior to -emoving cloth cover and, if n.eeceo, prior to scoring and cutting; JV?: COMMENTS: PURCHASE lb SPRAYERS FOR TRIAL. 5. uy reducing t.*:e open area between the lower surface of the band saw table and the exhaust opening, dust collection should i r.prove; jv?: *;ommhnts: dune. : ';on::icor otner means of improving the dust collection at the fours*! of release rather than relying upon the canopy hoods to clear, tne air; * JVP; COMMENTS: ORDER U" FLEX DUCT AND INSTALL ABOVE WORK ON BOTH SAWS. In place of brusnes and brooms, design attachments for the vacuum line for use in cleaning up area; TV?: COMMENTS: DONE. NO SWEEP[NO. USING VACUUM CLEANER FOR AM, CLEANUP LN CUTTING ROOM. DUP 0903041 1319 120960 J. A . ROBoE 2- November 10, 1972 Z) Consider relocating point of entry of makeup air - any dust that iz not collected could be kept continually In notion by air sweeping up from the floor level; __ 'jV?. COMMENTS: DEFLECTOR TO BE INSTALLED 12/22/72. 'I Cleanup after day's operation or periodically throughout the day while duct controls are being improved upon; jy?: COMMENTS: STANDARD PRACTICE AFTER EACH JOB. 7; Place plastic bag in disposal container - wet down waste pieces occasionally - when disposing of material, close top to prevent release of dust; and JVr: COMMENTS: PROVIDE WETTING FACILITIES AND COVER FOR CONTAINER. / h) Continue to require use of respirators on all Jobs where asbestos materials are used, i.e., rip-out of old material, insulating, and fabricating (Rip-out requires use of air-supplied respirator.) JW?: COMMENTS: ALL INSULATORS SUPPLIED WITH THU R PERSONAL . RESPIRATOR. /S/ RICHARD J. KUBIAK INDUSTRIAL HYGIENIST Dur 0903042 128961