Document MGpVmgzJgvJJvOmzo9MrKwypy

(conoco) Interoffice Communication To R. S. Matthews CT'f'P From R. E. Bailey Date December 19, 1974 Subject Test of Vaporizer System for Unloading of VCM Tank Car A VCM tank car was successfully unloaded using the vaporizer system on December 10, 1974, at the Lake Charles VCM plant loading site. The unloading required two hours and 49 minutes, and a total of 31,512 gallons of VCM was transferred into the sphere at an average rate of 186 gpm. The unloading rate was essentially constant during the transfer. The sphere pressure increased from 32 to 36 psig and the sphere temperature from 43 to 45F during the transfer. The completion of unloading was signaled by an 8 psi drop in the car pressure and an appreciable increase in the temperature of the liquid unloading arm. This test was conducted by the VCM plant operations and observed by R. E. Bailey, D. C. Hayward, and A. R. Dove from the Process Engineering Department. Data obtained during the run are at tached. lkm Enc CC: RAF:JADeB j GGD:DEM s RTF:ELK RDG: AFG: DCH: ARD: EMS : RGW: TRP File P-47.3 vvc 000020714 TANK CAR UNLOADING DATA Time Tank Car Level T-490 Level T--490 PRESSURE, PSIG Top On of Vapor Tank Line Sphere Level Sphere Temp, op Sphere Press, psig TANK CAR PRESS, PSIG Car Arm 1145 12' 1 15/16 1150 15 1/4" 33" 110 124 1157 Start Unloading 1215 78 86 1230 75 82 12 * 8 1/4" 1245 31 1/2" 70 80 12' 10 1/2" 1300 31" 70 79 13' 1 1/8" 1315 58" 30 1/2" 70 78 13 ' 4" 1330 29 3/4" 70 80 13' 6 1/16" 1345 28 1/4" 70 80 13* 8 3/4" 1400 27 1/2" 70 79 13' 11 1/4" 1415 26 3/4" 68 78 14' 5/8" 1430 26" 70 78 14* 3 1/2" 1434 Stop Un 25 1/2" 67 73 14* 3 5/8" loading > 43 44 44 44 44 44 44 44 44 45 45 32 30 73 78 33 69 74 33 66 72 34 66 34 65 70 34 66 34 66 34 66 34 65 36 66 68 36 58 63 REB-lkm 12/19/74 TANK CAR UNLOADING RATE Time 1145 1230 1245 1300 1315 1330 1345 1400 1415 1430 1434 Sphere Level 12' 1 15/16" 12' 8 1/4" 12' 10 1/2" 13 ' 1 1/8" 13' 4" 13 ' 6 1/16" 13' 8 3/4" 13' 11 1/4" 14' 5/8" 14' 3 1/2" 14' 3 5/8" Sphere Volume, Gal 91,261 98,661 101,355 104,533 108,058 110,615 113,983 117,150 118,907 122,611 122,773 Sphere A Volume, Gal 7,400 2,694 3,178 3,525 2,557 3,368 3,167 1,757 3,704 162 Transfer Rate, qpm 164 180 212 235 170 225 211 117 247 41 Total Volume Transferred = 31,512 Gallons Average Rate = 186 gpm REB-lkm 12/19/74 VVC 000020716 v/vc aGOO2071"7 Strict Vinyl Chloride Limits, Due Jan. 1^ May Be Delayed by Federal Qmrt Baling' by U WAl.i. STKKKT JOt'UNAI. Stuff KrpertCT NEW YORK - Imposition of Labor De partment standards to severely limit expo sure of workers to vinyl chloride, a gas linked with more than two dozen cases of a rare liver cancer, might be delayed by a federal appeals panel's decision. Permanent standards developed by the Labor Department's Occupational Safety and Health Administration, which would re quire companies to hold vinyl chloride levels in the air workers breath to one part vinyl chloride per million parts of air, aver aged over an eight-hour period, are sched uled to go into effect Jan. 1. But a special three-judge panel of the Second Circuit Court of Appeals here granted a stay until it could decide the merits of an appeal by the Society of the Plastics Industry and eight companies that oppose the new standards. _ The judges, retired U.S. Supreme Court Justice Tom O. Clark and Judges Frederick van Pelt Bryan and Kevin T. Duffy of the U.S. District Court of the Southern District of New York, have heard all the arguments presented by the companies and by the Jus tice Department, representing the Labor Department, and could conceivably rule on the merits of the appeal by Jan. 1. In the event they don't, however, standards in ef fect since last April that permit 90 parts per million vinyl chloride would remain in force, the panel ruled. * - The 90-parts-per-mlllion limit was Issued by the labor agency unit as a temporary emergency standard last March, within weeks of the first reports that workers ex posed for several years to high concentra tions of vinyl chloride gas had died of liver angiosarcoma, a rare but invariably fatal cancer. The emergency standard went Into effect last April. Prior to the 50-parts-per-mllUon limit, levels of vinyl chloride in factory air were generally considerably higher, often reach ing several thousand parts per million. The temporary emergency level became the first stage of permanent standards in voked by the Labor Department last Octo ber. after more than 24 cases of angiosar coma had been reported world-wide. But in dustry challenged the second stage,, aone- part-per-milUon limit, due' to begln: Jan. 1, as unnecessarily strict and impossible to meet. In addition to the Society of the PJastlcs Industry, the concerns participating lit the appeal of the permanent standards are the I Hooker Chemical Corp.., a' subsidiary! qf Oc- ] cident&l Petroleum Corp.'; Union Carbide , Corp.; Air Products k Chemicals Inc.; B. F. . Goodrich Co.; Uniroyal Inc.; Dow Chemical ' Co.; Firestone Tire k Rubber Co. and Tenneco Inc. Vinyl chloride la a widely used Industrial gas used mainly to make polyvinyl chloride. . or PVC, a plastic with many applications. Use of the gas as a propellant in aerosol products has been banned. , About 6,000 workers are employed In plants that make vinyl chloride gas and-or polyvinyl chloride, but the permanent stan dards would also affect workers who fabri cate PVC into a wide variety of finished products. The number of workers In the PVC fabrication Industry has been variously estimated at 390,000 to 700,000. ' Plastics Industry Asks Is the base element in the product! many plastic products. Court to Delay Rules Last month, the industry asked the Department (or such a delay on the For Vinyl Chloride ground, but the society says it didn't n a reply. However, the Labor Depar amended the rules Tuesday to allow a commonly available breathing devi By a Wall STRUT JOURNAL J|// Mt^rUr compliance, a department spokesman WASHINGTON -- The plastics Industry asked a court to delay enforcement of fed eral job safety rules on handling vinyl chlor ide due to a lack of protective equipment for workers. The Society of the Plastics Industry, a trade group, said It petitioned the U.S. Court of Appeals in New York to delay the Jan. 1 effective date of Labor Department restric tions on using the chemical. The group says He said the added device was in; tently left off a list of approved equi) In the original rule Issued in Octobe said the department also believes f< health officials soon will authorize the two other types of respirators and th. two federal actions should increasi available equipment supply so as to compliance by Jan. 1. enough breathing devices of the type re quired currently aren't available for pur chase. Vinyl chloride, which has been linked to cancer and deaths among plastics workers. Despite the amendment to the star a society spokesman said the industr continue to press its court petition be the added breathing equipment is far complex than that needed for comphan