Document bB80E1ZY7agxXv1wMQJyvEDyo

Attaolnant to VI1 Chlorld* Tfadicel-Industxiel ?ygien* Myaiol OSTIA SAlTPtlNO DATA S".KKT (7a Substance: Vinyl chloride. Standard: 29 CFR 1910.93g. permanent standard of October A. 1974 1. Limits of exposure; a. 8 hour time weighted average' (TWA) b. 15 minute ceiling average c. 15 minute ceiling for those electing not to wear respirators 1 ppm 5 ppm 25 ppm 2.. Action level: 8 hour TWA 0.5 ppm Sampling Equipment: A calibrated personal sampling pump whose flow rate at 50 ml/mln is accurate within + 5X and activated coconut shell tubes containing two sections of 20/40 mesh activated charcoal separated by a 2-na portion of urethane foam. Qualifications: Samples shall bo collected only by or under the direction of Compliance Safety and Health Officers (CSHOs) who ara Industrial Hygienists. Sampling Kata: 50 ml/mln for all samples Sample Size: 1. TWA samples: a. 5 liter maximum at concentrations below 200 ppm; mmfimiim duration 100 min. b. 2 liter maximum et concentrations above 200 ppm; m.-v-fmuni duration 40 minutes. NOTE: In some eases"it may be necessary to estimate' the~ vinyl chloride concentration with .importable direct reading instrument fo determine thc^proper volume of air to sample. 60039669 -2- 2. i Celling avurar.n samples: 750 milHlltcrs; 15 -in. dumtiou There should be no variation from 15 minutes unless the variation is justifiable. Sampling Procedure: (1) Employee <:7{iosurcs are determined by collecting air samples from s worker's breathing zone .using personal samplers. (2) TWA fi-bmir average exposures are determined by collecting a series of consecutive personal air samples that completely cover the duration of exposure in the 8-liours. (3)- Fifteen minute ceiling average exposures are determined by collecting full 15 minute period personal air samples. (A) Which employee exposures to measure may be determined by screening the concentration of vinyl chloride in. the workplace area with a direct reading instrument. (5) Immediately before sampling, both ends of two charcoal tubes arc broken so as to provide openings at least one-half the internal diameter of the tubes. (6) The first charcoal tube is positioned in the tube holder with the smaller backup section of charcoal being positioned nearest the pump. The second charcoal tube serves as a breakthrough indicator and is connected with a small, i.e 0.5 inch, piece of Tygon tubing to the outlet of the plastic charcoal tube holder with the smaller section of charcoal being positioned nearest the pump and-connected to the main sample line leading to the pump. Both tubes must be in a vertical position during sampling to avoid channeling and subsequent premature breakthrough of vinyl chloride. (7) Air being sampled must not be passed through any hose or Cubing before entering the first charcoal tube. (8) Set the flow rate at approximately 50 ml/min and record the initial counter number. Sample for on appropriate amount of time and record the final counter number. The sample volume is obtained by multiplying the number of counter strokes times the cc/stroke factor. Record the date, location, temperature, pressure and the tube number. . 60039670 - '3 - * (9) vImmediately after staple collection separate the- sample tube- from the backup tube and cap the tubes with the supplied plastic cap3. rut u sample seal on each tuba and label Lite Lubes with utatelling numbers* Designate the sample tube by the letter "S" axul the . bickup tube by the letters "DU". For example, the cubes used to collect the first sample of the day would he labeled 1-S and 1-EU. (10) Include one blank charcoal tube with every 20 samples (or one with each lot of samples if less than 20 samples are taken). Handle the blank in the same fashion as the others with the exception that no sample is collected on it. The ends nrc broken and the tube in immediately capped and prepared for shipping. Label the tube as a blank. Tlio backup tubes arc not to be considered as blanks. Analytical Procedure; Vinyl chloride is desorbed from activated coconut shell charcoal with carbon disulfide and analyzed using a gas chromatograph with a flame ionization detector. The primary charcoal tube is analyzed as the sample (both front and back sections together) and the backup charcoal tube is analyzed as the breakthrough- Indicator. Minimum to be Deported: 0.25 ppm NOTE: Lesser concentrations will be reported as less than 0.25 ppm. except where none is detected it will be reported as "none detected". Spcrj.il Considerations; (1) Do not ship bulk samples of polyvinyl chloride or copolymers of vinyl chloride to the laboratory for VC analysis. Our procedure deals with airborne VC. (2) Where two or more compounds arc known or suspected to be present in the air. transmit this Information. Including their suspected identities, with the sample to the laboratory. (3) The sampling places a heavy load on the sampling pump due to the high resistance of two charcoal tubes in series. Therefore, do not operate the pumps more than 8 hours continuously without fully recharging the battery'. t 60033671 -4x .* (4) The presence of high humidity or water mint caunun a reduction lu lucuklhrcugh volume. lUii'-, tlii.L li.ia been taken Into account and as long as the specified maximum sample size is not exceeded, no breakthrough should occur. (5) The desorption efficiency of charcoal can vary from batch to batch. Therefore, all the tehee need to collect a set of camrleu should contain charcoal fi ern the same batch. liccord the charcoal lot number on the sample real. (G) The increased pressure drop of two tubes in series will cause the cc/r.trokc factor to change. Also this cc/wtroke factor, at this high pressure drop, will vary slightly with flow rate. Therefote, for this special sampling situation, the puiap3 must be calibrated at a flow rate in the vicinity of 50 ml/min with two charcoal tube3 In line ahead of the pump and a ecu.responding cc/stroke factor determined. When sampling for vinyl chloride use only the flow control setting that corresponds to the flow rate in the vicinity of 50 ml/rain as determined from this calibration. Shipping Instructions Ship samples In a mailing tube. Marie it "RUSH" and send it "AIH MAIL." The CSHO should make every effort to forward the samples to the laboratory by the morning following the day the samples are collected. It is imperative that the laboratory receive the camples soon enough to complete the analyses witliln 96 hours after sample collection. Pre-planning la necessary. 60039672 -r\ t 'fft I Po A, ibDonalllii PnplftH truifir bfirtliotMdieef Approve for MpIojMst Approve for truiftr Appro** for continued vork Appro** for continued vorfc Appro** for ccstlsued vork or 61a*1# atoonal P. , lr toot (Dot All Rim) r* D JUnonel A1X Pfaoe .FrtplftM -Cooelder Jo* pi*c enact with epproprlnte vork restriction* Tnufiro k Periodic noUiit y(fruafir Periodic * > Ikpttn - Appro** for transfer bPoaltlff - Do oot <1*0 nedlcel approve! Rapeot toot lo t mil Da| - Appro** for tronafor Hop cotlmt current Job 1a laUflT1^ Poa Repeat teat it l*o Appro** for continued voik Pooltlv* Repeat toot lA t Mtka Itajr centinoa ewnst Job la ee for Periodic Hag - App for continued vort 1 Poa - Repeat toot Poe Poa* *e 1* Report tooto iMrfUtaly*^-- Ibp continue eunit Job ^ I Approve for continued work or trenofer Panov* fra irn, Refer to liver apoolellat for further die* etuftlao (Uitrieafl, IttA, etc) vjj 1 > Be* Poo Appro** for transfer Refer to perscrtal ptiyelclaa for further die* voxk*up Approve for cortloued wort transfer boaed on onualnln* <henk fren oree. Refer to ll**r specialist for B*f *' pfcpeiclaA'o written opinion further die* otudlee Poruanont reatriot Ion fro* vat {liver ocuf KUL( etc) Poo La TC un boaed on ----t<i pfaTilclko'o written opinion Appro** for continue work or transfer booed on exaalnln* ptqrelelaa'o written opinion Pamnnost reetrlctloa fra work In VC or*o boaed oc exanialo* physician's written opinion Rtpeet toot li t vMka ^ Ranlira trm ore* - n- Ha* ^ Poo Approve for continued work or truefer Refer to liver specialist for farther dle*nootle atudlee * \. Approve for continued work or tmaefor boaed on exonlnln* physician's written opinion Pemanoot restriction fron work In TC oxen booed on exenlnin* pfejalcian'i written optedon IP liver function Aik hot Alkaline phosphate*# k003U-MA ; j A' Cttildar job placement with appropriate vork restriction* Repeat teat la k ika Mop continue current Job ^ flag - Approve for transfer ^ Po* * Dlacuaa further action ConeIdar renovel f rat eurreot job llapeet teat La k make Map continue current Job u for Periodic * Beg - Approve for continued vork * Poe * Diacuaa further action Conalder reaovel frcn current Job Consider job placement vlth appropriate vork reetrlcttona llapeet teat la k week# --> Hop continue current Jdb Rag - Approve for transfer Poe - Refer to per tonal phgatclea for further diagnostic atudlee - Repeat tact In k veeka. Hap caotlnue current job Reg * Approve for continued vork Poe - Refer to personal flipslets* for further dlagooatlc atudlea Bane u for Periodic Poe Reg Poe Approve for continued vork or * tnaifir baaed on eanaialac phpnlcla8*a written opinion ** Permaeot reatrlctloe fren votl la VC area baaed on enalniog ptopelcian'a written opinion U liver function Aik fboe fbonpbatnae 6oo3q6*7^"B