Document DGrd4Em7g3ZwyeGOp96kpDQ6B

V- 3 -/o Anthony J. Diglio Director Corporate Environmental Activities (215) 481-8339 AIR /PRODUCTS ZS 12 June 1986 TO: P. L. T. Brian J. M. Norwood Please find attached reduced copies of the SAFER SYSTEM dispersion analysis on an illustration of an Escambia 34,000 lbs. of VCM released over 4 minutes. I gave the original computer printout, when I received it, to Gene Lee for comparison to his more rigorous dispersion analysis. i Two cases with conservative wind speed conditions of 1 and 3 mph were illustrated. Both show concentrations of VCM greater than 100 ppm at the plant's fenceline which exceeds the TLV (TWA-8 hrs.) of 1 ppm and the TLV (STEL-15 minutes) of 5 ppm. Gene plans to review his calculations compared to the SAFER illustrations. AJD:pbr Attachment: Reduced copies of SAFER SYSTEM Dispersion Analysis AP00024813 fr\SfrZOOOdV * I 10 2 Aini avis 89 ma aNIM 033dS ONIM SL dW31 aiv 0Z: L L 3WIJ. 9861 `2 SNnC1 W31SAS M33VS <000 8S: ll 8:LL 82=LL 82:LL 06 AMH Sfl NHOlvaiMOld 33Vd AddNn08 1S3M i WEST BOUNDRY PACE PACE FLORIDATOWN US HWY 90 11:2 3 11 :2 3 11 :33 12:03 12:58 \ SAFER SYSTEM JUNE 2, 1986 TIME 11:06 AIR TEMP 75 WIND SPEED 1 6! AP00024815 SAFER SYSTEM EXAMPLE - VCM CHEMICAL RELEASE ACCIDENT REPORT Printed out 6/02/86 at 11:19 a.m. RELEASE INFORMATION: Date and Time: Chemical Name: Phase: Type of Spill Estimated Amount: Ouratlon of Release: Release Height: Temperature of Chemical before Release: 6/02/86 at 11:18 a.m. Vinyl Chloride Gas Continuous 9000.0 lbs/mln. 4 mln(s) 50.0 ft. 40.0 Oeg. F METEOROLOGICAL DATA: Temperature: 75.0 Deg. F Minutes After Release 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 no 115 120 Mind Speed (mob) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 Direction 68. 68. 68. 68. 68. 68. 68. 68. 68. 68. 68. 68. 68. 68. 68. 68. 68. 68. 68. 68. 68. 68. 68. 68. Stability Hor 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. <MCSiCM(MCM<M(MrgCM<MOJOJCMCsJCMCMrvjrMCM<MCMCMC\f(M \* AP00024816 Safer System Example - VCM Chemical Release Accident Report Page 2 of 3 CALCULATED IMPACT: CHEMICAL CONCENTRATION 1.00 TO 100.00 PPM 100.00 TO 1750.00 PPM OVER 1750.00 PPM MAX DOWN-WIND DISTANCE 4.27 MILES .76 MILES .25 MILES 11:18 a.m. - Case 1 36,000 lbs YCM Release with 3 mph winds. DATE TIME 06/02/86 11:05 FIVE MINUTE METEOROLOGICAL AVERAGES WIND SPEED 5.62 WIND OIREC 11.93 TEMP 85.54 STABILITY HORIZ VERT 1.1 1.6 RELEASE TIME WIND IS FROM WIND SPEED AIR TEMP STABILITY RELEASE TIME MODE CHEMICAL PHASE TEMPERATURE RELEASE HEIGHT RELEASE TYPE DURATION TIME RELEASE RATE END OF INPUT MET INPUT ENE 67.5 3 MPH 75 F UNSTABLE 2 TEST RUN MANUAL INPUT VINYL CHLORIDE GAS 140 DEG F 50 FEET CONTINUOUS 4 MIN 540,000 LB/HR PROCEED West Boundry TIME OF ARRIVAL 11:28 a.m. CONCENTRATION LEVELS OF VINYL CHLORIDE 100.00 to 1750.00 PPM \ it AP00024817 Safer System Example - VCH Chemical Release Accident Report Page 3 of 3 I COMMUNITY LOCATION Pace Florldatown BAPT. 0 US HMY 90 TIME OF ARRIVAL 11:28 a.m. 11:38 a.m. 11:58 a.m. CONCENTRATION LEVELS OF VINYL CHL0RI0E 100.00 to 1750.00 PPM 1.00 to 199.00 PPM 1.00 to 100.00 PPM 0949c i AP00024818