Document QMgy9nB1xajG95Jg305Eo7dLv

FOR DU PONT USE ONLY cc : AR226-2908 . V. KNIGHT ; TEXTILE FIBERS DEPARTMENT CAMDEN : November 17, 1982 --- _ ,_ATR MONITORING DRING SggSJTIgN PRIMARY APPLICATION OF .MAY PL*NT, CAMDENc SOUTH CAROLINA rarory Report No. 707-82;j| SUMMARY industrial hygiehe survey was performed by R. w. Pell on __and September 1 1982 to evaluate concentrration^of ____Jurr'rq primary application ofi cour po^iticr,? of BCF spinning machine iterations Were as follows: Area and Source Samples: 0.06 - 2.1 mg/m' Personnel Samples: nondetectable - 0.5 mg/m' ALlilmiaftTA(EcLo)ncoefnt5ramtgio/nms3.w^iriet below the Du Pont Acceptable i_s__r_e_c_o__m_m_e_n_d_e_d resampli^ng be Exposure wdone during a preproduction or production run to confirn spinning___ . machine operators and otijier workers are not overexposed tofmSfj BACKGROUND u n c n a n g ^ The , . 1 1 ______ _ ^ n g this particular run were a hot chest Toi1 jemPerature.of 183C and an applicator roll speed of 29 rpm (standard operating conditions). AIR SAMPLING AND ANALYSIS' , .. ili collectad on Tenax-GC tubes. Air was drawn througn the tubes by Du Pont Model P^200 pumps calibrated innf^ou t -60 RlL'/rain: na^-GC tubes were thermally desorbed at 200 C using an Envirochem Unacon Series 810 Thermal Derorber at Seaford. The carrier gaslwas nitrogen. Samples were analyzed on a Hewlett-Packard Series 5840 gas chromatog'-aph equipped with a flame ionization detector and a 3.28' x 1/8" stainless steel column packed with 15% Igepal C0880 and 5% potassium hydroxide on Chromosorb W. Two samples were analyzed at Jackson Laboratory using ion selective chromatography to determine total fluoride. . Samples were collected at the following locations around spinning machine 370T: : On the spinning majchine operators (personnel samples). e On top of the primary finish control panel at position 22. Because of its proximity with the hot chest, this was considered a source sample. i Approximately five] inches from the primary applicator roller. j On the spinning majchine operators' I-beam work station, in the breathing zjcne. In th<v finish preparation area next to Calibration data are recorded in(j| ^ Analytical data arfe recorded inj RESULTS Tank. Air sampling results are listed in the attached Table. The highestJflj^P Jboncentrations were at the primary applicator roll T1.6 to 2jL mg/m ), located on the second floor approximately three inches'above the floor. These were source samples and are not indicative of typical operator exposure concentrations. All otherarea concentrations were equal to or *;"an 1*0 ra9/ni . Personnel Samples ranged from nondetectabl< to 0.5 mg/m . The lower limit of detection was 0.1 ug of/*" "** All concentrations were less than those measured during a tour-position test-, with the hot chest ooen. of a* - ~ 2 Seaford's analytical method may overestimate^H|^ollected because the flame ionisation detector can measure other finish components that come_pf4 the gas chromatograph column in _the same detection window asf_______ __ ___ ll Tnxs proDiem is being resolvd T > y ______ Research ana Development!, and th Haskell Laboratory Analytical Section. While all area soujrce and personnel 'oncentrations were below the AEL of 5 mg/nn during this four-position run, operators worked not only the four positions w h e r e f H H ^ j t f a s being applied, but also other positions! on spinning macnTn^ 370T. It is recommended resampling be done durinc^^^B- or 40-position preproduction or production run o f u f l H H p j it is particularly important that personnel^ s a m p l e ^ l g ^ ^ ^ ^ ^ ^ o n o o e r a t o r s who are working only positions v i ( h e r e f j fl||HH|[HHH|H^BVl Ls being appl ied. v r RECOMMENDATIONS Collect additional/]U^bamples during primary application of fan a full 28- or 40-position machine. Report by: Robert W. Pell Industrial Hygienist 's, ,'t ? - r s ' t . / / / ^ Christopher Wiernicki industrial Hygienist RWP:CW:tac:WP:3.5 Approved by: Stephen W. Dixon Section Supervisor Industrial Hygiene TABLE AMPLE CONCENTRATIONS OBTAINED _ RUNNING j Sample H-82-45-2 Date Time Sampjle Designation _ (min.) 8/31/82 Area sample between two ispinning machines, on tjhe control panel. 218 H-82-45-3 8/31/82 Area sample on cart at work station. 213 H-82-45-4 8/31/82 Area sample applicator. primary 238 H-82-45-5 H-82-45-7 8/31/82 9/1/82 Personal sample - "striinger." i . At the work station. 142 496 H-82-45-8 H-82-45-9 9/1/82 9/1/82 Control panel between 492 two spinning machines. Personal sample "striinger." 252 H-82-45-10 9/1/82 H-82-45-11 9/1/82 Persjonal sample - "tuqer." jI Areaj sample at ' primary applicator. 215 453 H-82-45-12 9/1/82 Finish Pre next to Tank* Area 430 H-82-45-13 9/1/82 Finish pre next i.' TanJ^. Area 431 HL-707-82 Concentration (ng/rr ) 0 . 6* * 0.06** 1.6 0.21 0.60 1.0 0.5 0.5 2.1 1. 0* 1.0 4 C ,4. l\av<v TABLE (Continued) _ BAMPLE CONCi UTRATIONS AROUND SM370T WHILE RUNNING Sample Date H-82-45-14 9/1/82 H-82-45-15 9/1/82 Sa|mple Designation Pelrsonal sample "stringer." j .' Personal sample "tiiber." Time (min.) 197 Concentration (mg/m ) 0.35 177 <0.01 ! 'r-v I " fonefn t r a t may tje lower because of probable interference. "Analyzed at Jackson Laboratory. HL-707-82 ii - 5Ti'J QO' 08'