Document OVXr2RXRaXqRLjaeXGqpEgpw

DRAFT L'lUbTRL'.L HXGIUiE 3UHVLT Revised July 19, 1951 . .-ulrecr.t Aetna document 3aiicaiiy ahc inpingcr sampling. e-uip-ient consists of an. inpinger .valent to the hillson .3'. Fntor driven pump unit with calibrated vacuum gauge and V belt drive. The ir.plr.ger -usably in a 500 rl. _riunucyer pyrex fln3k is counted in a holier on a tripos so as to be in th-i breathing tone of employees at tho operation seing studied. A l/2n ID ncr.-collapsible rubber tubing of suitable length is connected to the exhaust elbow and to tho inlet side of the pump. The pump motor operates on alternating (25 and 60 cycle) 1107 current sad on 2207 A.C. with the aeries resistance. Adjustment of the bleeder valve of pump should be made to maintain vacuum at the ap propriate gau ;s setting. B. Calibration The apparatus is Bet up in the sane manner as for sampling. The in let of. the inpinger is attached to tho outlet tube of a standard wet noter or five-light dry test gas neter. The pump valve is adjusted to a definite gauge reading* and tho tine for the intake of 1 cubic foot of air is measured by stop watch. Five readings in hundroths of a ninuts for 1 ruble foot air intake should be taken and averaged. The average tine is then divided into 1.00 tc give the rate of cubic feet of air per minute for that in pinger tube. The inpinger should bo permanently identified (letter, nunber, etc.) and tho rate recorded, A copy of tho inpingor ratings in the field record book will prove of value (fig. 1). For example: `"The ainglo line on the >fl.ilsen pump units. 01 0 5R 0 3 13 Inpinger Tube Vacuum Gauge Reading Cubic Foot of Air per Minute J line (2") 1.06 i; Uj-- i,ii DOCUMENT line (2-) 1.03 Ghould the cubic foot of air per minute of an inpinger d core or leas :-hun .15 Iron 1 uuoic foot, a new gauge sotting for cast iapingsr snould be established, identified and recorded to bring the 1low within those linits. The meter used :ratii oncuiu be frequently checked to in sure urn; no . ?r .Oil ins sampi ihould be comcsrstively Tree from suspended matter. If possible, distilled water should be prepared by one of the continuous types of i-ntcr stilly, and, after uistillation, allowed to stiind for 21, hours, the uppor part being drawn off for use. If alcohol is used, it should be redistilled before use. All glassware should bo thorou^ily cleaned with a hot cleaning solution, rinsed several times and finally rinsed with the fluid used as sampling medium. Rubber stoppers and corks should be cleaned by scrubbing with a brash in a war.::, pare 3oap (liquid or bar) solution. These should be rinsed thoroughly and rinsed finally in the sampling medium. 250 ml. (approx.) of sampling fluid should be placed in cloaned flasks and the flask stoppered with solid rubber stopper and capped with paper over the top held by a rubber band. Cleaned lrapinger assemblies should be stoppered and wrapped pending use. Prior to entry into the sampling field, the cleaned stoppered lnpingcr asoc-blioa should be in serted in place of the solid stopper. Ot 056 031*1 D. ln.^ Mediums | DOCUMENT Aab'istoa, 3ilcr.. Mineral Dusts, To minimize tho solubility of mineral dusts md inhibit bacterial growth, a sampling medium of 752 distilled wWia umiy! aieonoj. 0 --' should oo used# lead end Cemnounus - Just or Pune, Use 250 cc, distilled water to which has been added 10 cc. concentrated nitric acid. Use all pyrex glasa* Trcjisi'er sample for uuipneni. to glass stoppered ilujk or bottloj seal carefully. (Jar.nie must not touch soft glass wnich contains lead or rubber stoppers.; Juunhur Hlaiide. dee j.H. dodiun Hydroxide solution as sampling medium. Transfer for shipment to glass stoppered bottle} seal stopper with warn, then with tape to prevent loosening, (4 gratis chemically pure sodium hyurccdLue per liter distilled utter yield 0,11 iodium Hydroxide solution*) M-on "onese .`.eld Tornoundc - "act. Use distilled water only. Uadminn and Hemxmds - >ast. Use distilled water only. defer questions concerning appropriate sampling mediums, equipment or arrangement for these or other dusts, fumes or vapors to GH dafety Engineer. E. Sarnie Taking Sampling stations 3houii be established in the working area at all operations where health hazards are believed to uclst. They should bo permanently identified (to wit - painted alga on machine '`Station 22") and this designation used as tho sample number for all sanplos taken at this location# The flask and lmpinger unit should be secured to tho tripods and placed in the breathing zone of the employees at tho operation being studiod. If such placement is not feasible (due to cramped quarters, etc.) the flask and lmpinger unit may be secured to some objoct0^ch()vP@> 3 1 0 -4Th8 inninger outlet elbow is connected by appropriate lengths of rubber hose to the inlet connection of the punp. A 11QV A.C, 25 or 60 cycle (22G7 with resistance) current supply is necessary for the punp notor. valve to obtain tho appropriate gauge roaaing- which v/ili allow a rata throughout the sczzpli the tine nay be shortened to approximately 15 zonut.es. Tho cycle of tho operation being studied should also be considered in estiillahins tho duration of the sac pic. A sample which covers only the peak or lew of contamination leads, of course, to erroneous conclusion. Data pertinent to the samplin' should be recorded on form 50191-42, sketches or diagrams _aue as indicated and this record maintained per manently. The sample number should be indicated on the flask. When the 3aia?le has been completed tho inlet and exhaust impinger tubes should be stoppered and tho flask removed from the sampling area. The impinger assembly should bo removed and washed with distilled water into tho sample flask. A clean solid rubber stopper should bo inserted in the flask and capped with -ispor end a fairly heavy rubber band or scotch tape. A flask containing tho sampling fluid only should be included with tho samples forwarded for analysis, II. G303J OUST Gross or settled dust samples for petrographic analysis should bo obtained within the work area frcci a horizontal surface approximately at the workers' breathing level and placed in a clean envelope. 01 056 0316 x\ -5- Uiltfilbu DOCUMENT Appropriate data (sample station, et al) should ba recorded on form 50191-42 caul the sealed envelope contained identified. hi. flash corks snould be secured by scotch tape or by paper cover held to the flask no el-: by rubber band. The uauele ula-ua ur.o'_ be individually trapped in multiple thicknesses of newspaper, placed in the compartments cork-end up oral sieeyly packed v/ith crumpled or sareuied paper. The flask cases should bo lu.baled 1 TL.'.JJ", li.'IDLE ..ITll C 'Tlil- SIDE ITT" and shipped by the fa-test method (usually air express; to - The Travelers Insurance Companies 7-0 lain btreet d-rtfora 15, Connecticut Attention: Chemical Engineering Laboratory The appropriate data should be transcribed to the J-'l Industrial Hygiene Survey deport (Torn. 50191-43) in quadruplicate. Indication should be maue, i.u., asbestos, loaa, fortaidehyde, silica, manganese, etc., when other than particle count only is desired, duo copy snould acccraeany the flask case. The additional copies cure for tho plant manager, GH Safety Engineer, and technician*s file. Copies of the laboratory analysis report vri.ll be forwarded to tho plant manager, technician and 21 Safety Engineer. Issued by IJ. Safety Section. ni n ~ n q i n ZTollov.-ir..' is a list of era'lo^ees r?.nsierrea to non d o-y% .1* t r* '=*'ri*t 3 UNARC DOCUMEN v "*7 -_X4._4X 01 0S6 0318  ` - ,r' v > EMPLOYES TRANSFERRED BY DOCTOR'3 ADVICE ^ ------- - - yiwiCO document Entered - Original Date our employ < department transferred. Preseut .department t. 11*0 C. Fairbanks 6-10-26 Yarn s* 12-7-36 Mai nte.;a^.ce Or--Warren 6-24-26 Weavi ^8 & 12-7-36 Insutape ? J. Zirgaitis . H. Sing - ^ nX* L_ Novak . Y.o T. Martin \(_o V/. Sharp 9- 2-26 12-10-26 1-27-27 2-17-27 8- 1-27 Yarn & 0 V.Teavi ng ^ / nYarn Yarn Yarn (, i 11-30-36 11-30-36 n 11-30-36 s7 11-30-36 11-30-36 v.r. Molded Packing PacKiug Packing Molded ? E. Jones ' 7-10-28 Weaving S J 12- 7-36 ? Packing Isabelle Allen 5- 1-30 Yarn 1-15-37 Packing .;: ?. L. Sojka ui jfV DrPka 7 !.>* KpP. Quaid C.Williams on R-y-^> . > ,, 4.' %>F. Massey 10-10-33 10-23-33 ".J'' > ' 1- 3-35 5- 3-37 6-29-37 : Yarn .y* '4-30-35 Maintenance : !i -t Yarn y*. ' Yarn *> 6-11-37" . . 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