Document Jr4qzqMBxkg7xG3YkZa1z8Dna

(BIFGoodrich olW.it 1 <RZ^ s *r *I~Wl______~f* U-^LhL Vv\^- 'O&^-Q______CL*--e$ lyVa^i- O, Ur-* 1 A> 7~Iol L<j-a ^ J^crxrrij _r:_________________________*5jX*-trJl l-i-p^o tr&_JL_cC^0<J Cpj sptfc/Mj "tLji. i~iJki. ______*^7.1 A7^-a- 'huM^v ,__________T^s.g ~ "fbci tS> k-/U 1176< LryvJlc- umtK. Q^O^vjLA,'s--/ c --r~*j --<x"g^ -e^ ft,cO_____"fjilvVff_ . H'-fc. AJ- - <7^wOf rZv "173,7^ , 7lT irtA-g-'Hvp^p^p^ t| *V-2> V t~t^ T\ ^Vf| /L-s^^r-tr^^-*^ lAJ'Qfck- H* a^sP r* \/ O-A-^cC- ^-X-Lcr'W (3L~JL 0FG-M2<J-R 1/7? BFG15232 -cMn- C oO PHlNl tO IN U S Ahmed - Haller Modeling of VCM Concentrations During Thermal Processing of PVC. 3/31/83 AVCM * (RVCM)(weight of PVC in 8 hrs )( fraction of VCM lost) R T 28.8 (number of air turnovers/hr)(air volume in building) (AVCM) - measured and a distribution calculated. (RVCM) - a distribution is calculated based on the distribution in 1982 and mean RVCM values for 1974, 1975, and 1976. (fraction of VCM lost) - found to average 60%. (weight of PVC in 8 hours) & (air volume in building) go together; larger weights require larger buildings. VCM is assumed to be evenly distributed in the building. (number of air turnovers/hr) - calc, based on probabilities of AVCM and RVCM at 10. Assumed to be 5. BFG15233 : i , l jn '5 . SUSI'EKSIfitf RKS1NS KVCH MATA <1974,75,7h mid J) BFG15234 21569003 o 77 if deline of VCH Concentration During Thermal Processing of PVC 3731/83 Page 17 APPENDIX 4 (CONT'D) (II) Calculation of Effective Air Turn-over Rates From Fig. 4.1 and Table 3.1 (Appendix 3) the following AVCM and corresponding resin RVCM data can be tabluated. 1974 Data Percentile 99 95 50 1975 Data 99 95 50 1976 Data 95 RVCM (PPM) 260 150 52 150 95 30 33 AVCM (PPM) Effective Air Turn-over Rate/Hr. Calc. From Equ^- (5^) /.i -3 ( . VL 55 144 114 2.5 .8 .06 k 10 20 88 .1 55 Based on this data the least value of effective air turn-over rate is 10/Hr. S0069STZ BFG15236