Document revmnRYp3NLrNOQ9xZ5pDOodE

TtLf^HONE AREA CODE 617 Bft4St7 PROFESSIONAL SAFETY CONSULTANTS INCORPORATED 239 BEAR MILL RD. WALTHAM. MABB. 02IB4 April 23, 1973 Mr. Peter F. Kozlowski Plant Manager A. W. Chesterton Co. 9 Forbes Road Woburn, Massachusetts 01801 Re: Air Sampling, 28 March and 17 April, 1973. Dear Mr. Kozlowski: Attached are the results of the air samplings taken at your plant on the above indicated dates. I hope to be able to provide some pictures of the slides shortly. If you have any questions concerning the sampling, fiber counts, or solutions to fibeT problems, please call. Very truly yours, Henry A. Eschenbach HAE: emb Attachments Air Sampling - A. W. Chesterton Co. Summary and Comments The samples taken for this report were collected on Millipore MAWP037AO, .8 micron porosity membrane filters mounted on open-face holder. Bendix Micronaire Personal Sampling Pumps were used. Fiber determinations were made using a Bausch 8 Lomb Phase Contrast Microscope at 430X. With the exception of two areas, the 1500 Room and the Winding Room, all samples were well below the present Threshold Limit Value (TLV) for asbestos fibers which is 5 fibers per cubic centimeter. In fact, excepting the above and the round braiders, all were below the 1976 TLV of 2 fibers per cubic centimeter. OSHA is presently using 1 fiber/cc as the point above which X-Ray and pulmonary function tests are required. The winding room levels could be considerably reduced by providing ventilation. Bag type collectors are usually quite effective when used with fibers, and the possibility of using make-up air from the plant and returning it, filtered, to the plant should be considered. Local ventilation probably will be the best solution to the high levels in the 1500 Toom. The fan could be used' during charging with asbestos which appears to be the main producer of airborne fibers. While exhaust ventilation will solve many fiber problems, there are some pitfalls. The Environmental Protection Agency is developing rather strigent standards concerning asbestos, so one can no longer exhaust without considering their requirements. In addition, indiscriminate use of exhaust ventilation can result in a negative pressure situation which ultimately defeats the purpose of the equipment. REPORT OF AIR SAMPLING At A. W. CHESTERTON CO. 9 Forbes Road Woburn, Mass. By Professional Safety Consultants, Inc. 235 Bear Hill Road Waltham, Mass. Henry A. Eschenbach Consultant Air Sampling - A. W. Chesterton Co Operation Sampled 1500Room 12 " Braiders 18 " Braiders Round Braiders Cleaner Lattice 375 Braider Twisters Parachute Folding Winding Room Coiling Fibers per cubic centimeter greater than 5 microns in length 3-28-73 4-17-73 18.8 0.8, 1.1 1.9 2.6 0.9 0.3 0.5 Trace 0.6 13.2 0.9 1.5 0.8 0.9, 0.4 0.04 Lab E v a lu a tio n Ol a iy s CC CQ q5 O e - c~ m tx Ki (0 c Hi 0 In rt < O Q cn 1C o h Z U. <S \sf- i a a o 1IS) <U0 & CIZ i/> Hi fcr - fm v> L ~ = (k 0 ZL - CL J, a Jo. cW *n->s tfCtcsl. 0E3) >O cBT" a. as m1E0 h*E"- lc 0.0 CL it a. o CO o NS o v3 co s9 K \S OO) a 2 oo 2 a o to VO. TrV* vJ o n? o0 tc 0 o o c C. O r< ^o1 1 K -A rv k ttsAxi nCAj 2} m 8 o f >s Vn <y ft fA tv, c< rA 5 ffi Co 4oai-O>s 43->o L<>UQ 4OOMk&->3. -IJQ Heavy Excessive Snow SAMPLING DATA & EVALUATION in <v1atco0.s. *aaucjs* o vi r co g: cL. fit rc> sS*"J* cj .r> ?s rv IV rr-2 2 rvV r* 5 a K He /-- r* d ju- < u r W C rf o 2 5 j l_0 iS A Ls 5 \i oo U o a 5 a i aass >o a. uEs --rJcT Cc* 4 >0 fi U> .W^ eS c V* 0 GZ Ocr S>a-i -S <? * I c. J wT `J < 2 2 2 % 0 1 LJ l C <1 Cf -i *7 z as lOCEreL 3OC t< "-v > <c * d c- O $V i << <: <0 < <2 5o a.* .--I ru- e: i 1 a; -- v~11 . - 1 r. . i CL O E sr a3 a :c 4-- *s i i1 f; *r> f' c V. si) 'JV f' r- o V ,vs Ji r'*sPS* fs* o r4 ^, at ccn 'a. l/IEQ> REMARKS Lab E v a lu a tio r CD V> * O# 4 _______________________L 2 fe <L O (A O0fEUC0) C05-- *j aj <S0o). oCl. -->3EO d 0 & Uejl 9i Q. IU a. G i cfl Ji MI > Q4/*) & N>- S) IL e o 2 a fc UJ <iUr X \ N \ X; % X o S VO c CL 0> 1Ef/O1 E h- 0 ro CO Vf> cx Vo o X rV O. 0ic.0 oo r0o o 5 lA _P> 5 1CE5l CL. O^ <0or< (0 VT rg 0 J*O0 a 3 A Ae A i <0wto> vCAL * dJ P co o41WOc^0J. ID 2 e 11' r ~f V. c V^ O r- (V 0 2 Xw u J c Luk.- *QL 5i 00>o1 Cl 2 _22C V %. %c6c. */ 3C. J 1 V _ <r a % c * 2 vi) Q, E UJ vr: < jg^ 0J c. ttoo soc ~s. Lnt > sS i -> c Hfjii } i i fc^ii 'J i - t--Cc>>. QE. =O V-v rx r* C t.' ys. C o 'JN w vi* Vjo tA fx o V \| * - \\V1 C>O Co 4f3O^ U1>J0 ^^ 0) ofO --J4iIouoO-aOJ V .^ So CO cOl z. tEi/ai .MPLING DATA & EVALUATION PROFESSIONAL SAFETY CONSULTANTS IttCOUPOftATCD 239 BEAR HILL RD. WALTHAM. MASS. 0219* September 17, 1973 Mr. Peter F. Kozlowski Plant Manager A.W. Chesterton Co. 9 Forbes Road Woburn, Massachusetts 01801 Re: Air Sampling, 11 September 1973 Dear Peter: Attached are the results of the air samplings taken at your plant on the above indicated dates. I hope to be able to provide some pictures of the slides shortly. If you have any questions concerning the sampling, fiber counts, or solutions to fiber problems, please call. Very truly yours HAE:mh Attachments Henry A. Eschenbach Industrial Hygienist AIR SAMPLING - A.W. CHESTERTON CO. Summary and Comments The samples taken for this report were collected on Millipore MAWP037A0, .8 micron porosity membrane filters mounted on open-face holders. Bendix Micronaire Personal Sampling Pumps were used. Fiber determinations were made using a Bausch & Lomb Phase Contrast Microscope at 430X. Fiber levels in almost all areas were comparable or slightly lower than at the time of our previous sampling. The level at the 1500 operation was greatly reduced by the new asbestos preparation and handling techniques. The use of a respirator is probably no longer necessary here. Unfortunately, there was a dramatic increase in levels at the lattice braiders. The high sample was taken on Titcomb who was working with blue asbestos. The sample filter indicated that the origin of the airborne fibers was the blue crocidolite rather than chrysotile. An investigation of Titcomb's activities is suggested to determine if an unusual occurrence resulted in this high count. LaB E v a lu a tio n 4* UL VS t< CO ! ft \ 0 Q> Q m r o o Remarks Pump Pump Sampling O perating Volume 5 s D oVa O T NS Ar vS ns nS O ff On Time s0 ft -3 VJ NS $ $ a $ hgj- 1o ! II j |% 1 i i5 ! s S* o n VB Q m 55 A r | j 3Z' <0 & 1 0 2 * o A 2 0 5 8 1 i (j jtfV 1 'I d 0 2 V9 2 i < 1 t Vj 2 a) M0 0* CQ 2 2 < * O p e ra tio n /A re a Employee IIi 1n i ii O 1tTO 9 CQ x 3 <5 too 4^ | 2 1 low Sample Rate No. < 3 ft 0 0 X0 X0<9 * 00 3 5 o T VJ * i u cc o ct i "In-"ii' - 1iIi *m m s fL o. o E= >US Vr*r 8 E c/> laa. e 9 *0o) - ID to c0) c EID HOUSEKEEPING INSIDE DRAFT VISIBLE DUST 01 ID JZ U tct) Q) cj oo >>> ID 0J (/) s z QJ Cl > +J ID X L. LA CJ co O* QoJ o 0) u X 21 to 21 UJ U ICDl I o tco to Laboratory E va lu a tio n By SAMPLING CONDITIONS: OUTSIDE S am pling By