Document LJRjEg8nvKzDOqkK7Og8joJNq

CHLOR - ALKALI 2 1994 REACTIVE CHEMICALS REVIEW CHLORINE AREA 00 A 046070 CONF IDFIMTTAI, CHLORINE COOLING AND DRYING AREAS Brine / Process Water Chlorine f from --------*- Cells 1 H2S04 From Chlorine CTW 4_ E r 201 RTN I1 CW 4_ E r 202 RTN l Recycle from Purification t Brine P-232 Treatment 7/92 doh confidential DO A 046071 CONFIDENTIAL CHLORINE AREA TRIPS Generator High hydrogen in tail gas Chlorine Compressor High interstage temperature - 325 F Cell header vacuum reaches -9.5 inches water instantaneously Cell header vacuum reaches -8.0 inches water and holds for ten seconds Cell header vacuum reaches -8.0 inches water twice in 2 minutes Dow Confidential OO A 04607? rONFTDFNTT At 07/17/92 Us Reactive CHLORINE COMPRESSION Temp F Q STAGE Suet Disc 100 265 2ND s-. STAGE Suet Disc 115 265 STAGE Suet Disc 110 190 Suet Cont 110 Press PSIA -3.7 15 13 50 48 80 78 Flow #/HR 85,000 85,000 85,000 85,000 85,000 85,000 0-10,000 Enthalpy BTU/# Total Enthalpy MBTU 240 20.4 260 22.1 242 20.6 2 57 21.8 240 20.4 249 21.16 239 2.39 00 A OAA073 CONFIDENTIAL 7/92 DOW confidential CHLORINE PURIFICATION 95% Chlorine Gas to Liquefaction Chlorine Gas Recycle to Drying Train 09/94 DOW CONFIDENTIAL Taffy to Solvents TOX DO A 046074 OONFIDFNTTAi CHLORINE LIQUEFACTION From 7/92 DOW CONFIDENTIAL CHLORINE EVAPORATION To Chlorine to E-501 Chlorine From P-510 A /B 7/91 DOW CONFIDENTIAL R12 RTN "Popping Line To T-204 00 A 046076 CONFTDFNTTAL FREON SYSTEM ToC-520 B Chlorine ffm DO A 046077 CONFIDENTIAL 7/92 DOW CONFIDENTIAL CHLORINE RAW MATERIALS CHLORINE: Temp CI2 Air C02 h2 125 F 95% 4.25 % 0.2 % 0.05 % FREON: R-11 R-12 SULFURIC ACID: H2SO4 BRINE 98 % MTLS.DOC Dow Confidential DO A 04f>078 C.ONFTDFNTT Al 09/29/94 CHLORINE PRODUCTS / BY-PRODUCTS CHLORINE: Gas Liquid h2o Fe nci3 100% > 99.9 % < 30 PPM <3 PPM <1.5 PPM TAFFY: Chlorine-Free Analysis from 5/93 Carbon Tet 15% Chloroform 5% Methylene Chloride <1ppm Bromotrichloromethane 7ppm Dibromochloroethane 5ppm Pentachloroethane 2ppm Hexachloroethane 25ppm MTLS.DOC Dow Confidential OO A 046079 oonftdfnttai, 09/29/94 A0( 122) E-205 TEMPERATURE CONTROL SCHEME SELECTED TEMPERATURE ,:/5TEP(:iib)Slil:v; RUN E-205 TEMPERATURE SETPOINT ---------- E-205 TEMPERATURE CONTROLLER I AOC122) CALCULATED VALVE OUTPUT AO( 122), E-205 DUMP VALVE. FUNCTIONS AS THE E-205 TEMPERATURE CONTROLLER. THE CONTROL TEMPERATURE IS SELECTED FROM THE HIGHER VALUE OF Al( 133) AND AK143). THE5E TEMPERATURE INPUTS ARE LOCATED IN THE BOTTOM OF E~205. AS THE SELECTED E-205 TEMPERATURE RISES ABOVE SETPOINT. AO( 122) OPENS TO THE ON-LINE TAFFY POT. THIS CAUSES E-205 LEVEL TO FALL. WHICH IN TURN CAUSES THE STEAM LCV, AO( I 12). TO CLOSE BACK. WHEN THE STEAM IS REDUCED LESS CL2 IS BOILED OFF. CAUSING T-204 PRESSURE AND OVERHEADS FLOW TO DROP OFF. T-205 BOTTOMS VALVE, AO( 121), IS THE OVERHEADS FLOW CONTROLLER IN THIS STEP. AS THE FLOW FALLS. THIS VALVE OPENS UP TO BRING THE FLOW BACK UP TO SETPOINT. THEREBY INTRODUCING MORE COLD LIQUID CL2 INTO T-204/E-205 WHICH LEADS TO A TEMPERATURE REDUCTION IN THE REBOILER. THE CONCENTRATED HEAVIES WHICH SETTLE TO THE REBOILER BOTTOM ARE PURGED TO THE APPROPRIATE D-227. Dow Confidential DO A 046080 C0NFIDFNTTA1 D-227 ALARMS WARN( 149/166) HIGH TEMPERATURE WARNC150/167) HIGH TEMPERATURE RATE OF RISE WARNC15I/16Q) HIGH PRESSURE WARNC151/169) READY FOR TRANSFER WARNC 1 52/ 1 70) EXTREMELY HIGH LEVEL WARNC 154/171) PRESSURE TRANSMITTER DISAGREEMENT WARNC155/172) TEMPERATURE TRANSMITTER DISAGREE WARNC 1 56/ 1 73) LEVEL TRANSMITTER DISAGREEMENT WARNC 157/174) DI/DO MISMATCH WARNC 158/175) SNIFF VALVE IN WRONG POSITION WARNC159/176) TRANSFER NOT PROCEEDING WARNC160/177) TOO LONG IN PRESSURE UP SHDN( 161/178) EXTREMELY HIGH TEMPERATURE WARNC 163/180) REDUNDANT TX'S OUT OF SERVICE WARNC 164/165) POT PRESSURE HIGHER THAN N2 LINE WARNC 181) SYSTEM "E" NETWORK COMMUNICATIONS PROBLEM Dow Confidential DO A 04&081 CONFTDFNTTAl A0( 1 05) H2 IN INERT5 CONTROL SCHEME CL2 FROM T-205 AOU 05) CALCULATED VALVE OUTPUT FLOW LBS/HR ,c j -mm* SLAVE N2 FLOW CONTROLLER CALCULATED N2 FLOW 206 MAINTENANCE MASTER H2 IN INERTS CONTROLLER *4r k. f ^2 My H2 IN INERTS ^ * V--/ ANALYZERS I------ ^226) H2 IN INERTS SETPOINT SELECTED H2 INPUT AO(IOS) DISABLED - CLOSED D0(144)Dl5ABLED - CLOSED 3TEP(t79) :.ST^jhiii*BY:!' AO( 105) ENABLED TO CONTROL H2 IN INERTS CONCENTRATION AT D-526. 5TEP(18..0...). 00(144) ENABLED AND OPEN UNLESS LOW DIFFERENTIAL PRESSURE ACROSS VALVE. :nUH' ii-.tMi ? i < tut Dow Confidentia I DO A 046082 OONFTDFNTIAL SEQ13 STEP LOGIC DIAGRAM PURIFICATION EBV SYSTEM FROM ANY STEP IF EMERG. SWITCH IS THROWN STEP(135) emergency block Dow Confidential DO A 046083 CONFIDFNTIAt, CDC AREA POTENTIAL PROBLEMS TITANIUM IN THE PRESENCE OF DRY CL2 WILL BURN. BOTH CL2 EXCHANGERS, E-201 AND E-202, CONTAIN TITANIUM TUBES. PREVENTIVE MEASURES 1 - Exchangers are in wet Cl2 service. 2 - Water is continually sprayed into the Cl2 side of both of these exchangers. This flow is monitored and alarmed. 3 - Titanium parts in security storage. WET CL2 REACTS WITH STEEL IN A VERY CORROSIVE MANNER. WEAK H2S04 IS VERY CORROSIVE WHEN CONTACTED WITH STEEL. SULFURIC ACID CARRYOVER INTO PURIFICATION AREA (TAFFY POTS). 1 - All piping in wet Cl2 service is of lined pipe material. 2 - All vessels in wet Cl2 service are polypropylene lined. 3 - Mist eliminating elements in D-209 A are fiberglass. 1 - The first drying tower, T-201, is a CPVC vessel. 2 - Acid strengths / flows / temperature are monitored in both drying towers. 3 - Tray temperatures are monitored in both towers. 4 - Acid coolers for both towers. 1 - Differential pressure transmitter with high delta P alarm on D-213-B 2 - Change out dry brink filters and inspect dip tubes every 4 years minimum. 3 - Redundant level transmitters on D-213-B with a low level alarm DO A 046084 CONFIDFNTTA! Dow Confidential 07/29/96 CDC AREA POTENTIAL PROBLEMS CL2 - IRON REACTION AT COMPRESSOR C-201-A. CL2 - IRON REACTION IN PIPING. CL2 - LUBE OIL REACTION. CL2 - ORGANIC CHEMICAL REACTION. PREVENTIVE MEASURES 1 - Interstage fin fans to keep Cl2 temperature down. 2 - High temperature trip on the compressor. Triple redundant temperatures on 2nc* and 3rc* stages. Trips on two thermocouples at 325 F on 2n(^ or 3rc* stage. 3 - Deluge system. 4 - Interstage and discharge temperatures alarmed and monitored. 5 - Moisture monitored and alarmed off of discharge. 1 - No steam tracing - only electrical. 2 - Drying procedures prior to startup. 1 - Bearing housing separated from compressor seals. 2 - N2 purge on compressor seals; air purge on bearing housing. 1 - Prohibit use of hydrocarbon based compounds inside Cl2 vessels and piping. 2 - Use Fluorolube as gasket lubricant and DP cell fill fluid. 3 - Use only water or steam for cleaning of equipment used in Cl2 service. Dow Confidential 00 A 046085 OONFTDFNTIAl 07/29/96 PURIFICATION AREA POTENTIAL PROBLEMS PREVENTIVE MEASURES NITROGEN TRICHLORIDE EXPLOSION IN TAFFY POT. 1 - Monitor and alarm temperature in each pot (redundant). 2 - Alarm rate of temperature rise in pots. 3 - Analyze Brine for NH3 content bi-monthly (R&D). 4 - Analyze Taffy bi-weekly for NCI3. 5 - Monitor and alarm pressure on each pot (redundant). 6 - Lowered PSV setting to 150# to catch pot overpressure. 7 _ Maintain 80 PPM hypochlorite in the Brine. 8 - Maintain level below 40% to allow room for diluent should a reaction take place. 9 - Capability to automatically add liquid chlorine to the Taffy Pot in the event of a reaction. Also have capability to add CCI4 to pots. 10- Reboiler temperature controlled to decompose NCI3. Given 40 PSIG operating pressure, reboiler temperature set point is set at 170 F, over 30 degrees below the boiling point of the dilutant, CCI4. 11- Pressure transmitter and an alarm for high pressure "rate of rise" on transfer line. PURIF.DOC Dow Confidential DO A 046086 CONFIDENTIAL 10/03/94 PURIFICATION AREA POTENTIAL PROBLEMS ORGANIC IMPURITIES; WET CC14 CHLORINE - ORGANIC CHEMICAL REACTION. PREVENTIVE MEASURES 1 - CCI4 provided by Solvents from "check tank". Check tank analysis to be obtained for each load. 2 - In plant capability to analyze each load for organics and H2O. 3 - Dedicated line from Solvent. 1 - Prohibit use of hydrocarbon based compounds inside CI2 vessels and piping. 2 - Use fluorolube as gasket lubricant and DP cell fill fluid. 3 - Use only water or steam for cleaning of equipment used in CI2 service. PURIF.DOC Dow Confidential DO A 040087 OONFTDFNTIAL 10/03/94 LIQUEFACTION AREA POTENTIAL PROBLEMS PREVENTIVE MEASURES HYDROGEN - CHLORINE EXPLOSION IN TAILGAS 1 - Monitor hydrogen in cells continuously. 2 - Redundant hydrogen analyzers monitor and alarm tail gas to Brine Scrubber (set point 3.5 % H2 in inerts) analyzers included on critical instrument program ; Generator runback: 4.75%. 3 - Automatic N2 dilution into tail gas. Control at 2.4%. WATER/MOIST AIR ENTERING LIQUEFACTION PROCESS FROM BRINE SCRUBBER CREATING SEVERE CORROSION PROBLEM 1 - Check valve installation on tail gas line to scrubber. 2 - High pressure alarm on Brine Scrubber. 3 - Moisture analyzer and alarm on T-505 tail gas inlet line. 4 - Liquefaction startup and shutdown procedures, on computer, call for blinding the liquefaction process from the brine scrubber when liquefaction is to be depressured. CHLORINE - IRON FIRE FROM LIQUID CL2 PUMPS OVERHEATING 1 - Alarm on low cooling flow. 2 - Minimum flow lines provided to prevent dead-heading. 3- EBV's on the suction and discharge of the liquid chlorine pumps also serve as a line of defense for minimizing chlorine losses if a pump fails HIGH MOISTURE CONTENT IN CL2 CAUSING ACCELERATED CORROSION TO CARBON STEEL 1 - Redundant moisture analyzers monitored and alarmed. Dow Confidential DO ft 046088 CONFTDFNTT Al 02/12/97 LIQUEFACTION AKEA POTENTIAL PROBLEMS H2O IMPURITIES ADMITTED TO PROCESS VIA FREON CL2 LEAK INTO R-12 REFRIGERATION SYSTEM (C-520 LEADING TO REACTION WITH COMPRESSOR OIL) PREVENTIVE MEASURES 1 - Complete analysis on all freon shipments. 1 - Analyzer monitors and alarms CI2 in freon. 2 - CI2 - R-12 exchangers have double tube sheets. Dow Confidential DO A 046089 CONFIDENTIAL 02/12/97 EVAPORATION AREA POTENTIAL PROBLEMS NCL3 ACCUMULATION IN EVAPORATOR BOTTOMS HIGH PURITY GAS CONDENSING IN USER HEADER H2O / IMPURITIES ADMITTED TO PROCESS VIA FREON PREVENTIVE MEASURES 1 - Flush evaporator bottoms once daily to T-204. 1 - Redundant temperature transmitters. 2 - Superheater on R-II system which operates independently of freon compressor. 3 - Computer monitoring of CI2 gas header pressure and temp to calculate dewpoint. Scam alarm when gas is 10 F from dewpoint. 4 - Electric heat tracing and good insulation on gas header to CI2 plant. Heat tracing designed to maintain 100 F heater temperature. 1 - Complete analysis on all freon shipments. Daw Confidential 00 A 046090 CONFTDFNTTAL 07/17/92 CHLORINE AREA CRITICAL INSTRUMENTS Chlorine EBV Mod 5 self test ( Not a critical instrument check) Liquid chlorine transfer line AOVs Hydrogen inerts analyzer - run back at 4.5 % Freon in chlorine analyzers (liquid and gas) - 10 PPM alarm Chlorine in Freon alarm (switch) Taffy pot temperature - high temperature alarm at 150 F Chlorine Compressor Chlorine compressor discharge valve Chlorine compressor discharge pressure Cell header pressure control flow Flow vs. valve position for chlorine to J-252 Chlorine compressor runback functions C-201 generator trips Chlorine compressor trip permissives INST.DOC Dow Confidential' DO A 04A091 C.ONF 7 DFNT T Al 10/03/94 CHLORINE AREA TRIPS / RUNBACKS Generator High hydrogen in tail gas (runback) Low cell head level (4 inches) Cell header "mega" back pressure Chlorine Compressor High interstage temperature - 325 F Cell header vacuum reaches -9.5 inches water instantaneously Cell header vacuum reaches -8.0 inches water and holds for ten seconds Cell header vacuum reaches -8.0 inches water twice in 2 minutes INST.DOC Dow Confidential OO A 046090 OONFIDFNTTAI 10/03/94 CHLORINE AREA CRITICAL INSTRUMENTS Chlorine EBV Mod 5 self test ( Not a critical instrument check) Liquid chlorine transfer line AOVs Hydrogen inerts analyzer - run back at 4.5 % Freon in chlorine analyzers (liquid and gas) - 10 PPM alarm Chlorine in Freon alarm (switch) Taffy pot temperature - high temperature alarm at 150 F Chlorine Compressor Chlorine compressor discharge valve Chlorine compressor discharge pressure Cell header pressure control flow Flow vs. valve position for chlorine to J-252 Chlorine compressor runback functions C-201 generator trips Chlorine compressor trip permissives Dow Confidential DO A 046093 rONFTDFNTIAi 07/17/92 RESPONSE TO HIGH NCL3 LEVELS IN TAFFY POTS AUTHOR: Dennis Daigle DEVELOPED: 9-22-89 REVIEWED: 11-20-96 REVISED: 9-14-95 BY: Mike Prejean EMERG098.DOC REVISION#: 3 APPROVED BY: Allan Sandow EFFECTIVE DATE: 12-9-96 AREA: LIQ/PURIF TYPE: EMERGENCY I. OBJECTIVE: To Respond To High NCI3 Concentration In Taffy Pots II. FREQUENCY: When High NCI3 Concentration Occurs. III. RESPONSIBILITY: Operations Personnel, Board operator IV. REVISIONS: 9-14-95 Section VIII. Procedure add increase CCI4 flow to D-205 and manually dump 5% CCI4 to taffy pot; change lead SOS to board operator. 05/18/95 Section III, Changed Shift Supervisor to Lead SOS. Revised all of "Section VIII, Procedure". 8-26-94 Convert To New Format V. REFERENCES: N/A VI. REQUIREMENTS: A. NOTIFICATION: Gate 1 - 8888, Production Supervisor, Area Contact, Solvents Plant For Transfer B. DOCUMENTATION: Control Room Log Book C. REGULATIONS: N/A Chlor-Alkali II Operating Procedures EMERG098.DOC Dow Confidential DO A 046094 CONFTDFNTT At 2/12/97,12:15 PM Page 1 of 3 VII. PREPARATION: A. SAFETY/ENVIRONMENTAL 1. EQUIPMENT: Standard Block Safety Equipment 2. HAZARDS: Explosion, Chlorine Release 3. PRECAUTIONS: N/A B. EQUIPMENT: N/A VIII. PROCEDURE: Note: Taffy Pots are sampled bi-weekly and analyzed for NCL3. The normal NCL3 Concentration in our Taffy is less than 10,000 ppm. The following Procedure should be observed when an Analysis of 10,000 ppm NCL3 or greater is found. A. Taffy Analysis of 10,000 ppm -15,000 ppm in D-227-A or B: 1. Notify Production Leader along with Run Plant Engineer and/or process technologist. 2. Notify Solvents of intent to transfer Taffy immediately. In the event of any delay in transfer due to Solvents Plant, CA II Production Leader should be notified. 3. The Reboiler (E*205) should be filled with Liquid Chlorine up to the High Level Alarm point. 4. If CCI4 flow is below max setpoint increase to max but not above max setpoint without doing an MOC. Also, add 5% level to the taffy pot using CCI4. 5. The Pot with the High NCL3 Level should be put On Line and fill to at least 20% level with Liquid Chlorine. 6. DO NOT Pressure Up the Pot for transfer until Solvents gives the positive go ahead. 7. Closely monitor the Taffy Pot Temperature and Pressure. 8. Transfer the Diluted Pot as quickly as possible. 9. Sample E-205 Taffy daily, as a minimum, until levels return to normal and/or assignable cause has been found. Chlor-Alkall II Operating Procedures EMERG098.DOC Dow Conndential DO A 046095 CONFIDENTIAL 2/12/97,12:15 PM Page 2 of 3 B. Taffy Levels Of 15,000 ppm NCL3 Or Greater In A Taffy Pot: 1. If > 15,000 ppm NCL3 do the following before catching another Sample or sending someone into the Purification Area: A. Evacuate material in T-205, T-204, and E-205 bottoms to Taffy Pots. B. Transfer to Solvents. Notify them of High NCL3 Levels. C. Repeat Procedure (A & B steps). D. Cut Load: If dumping Liquid Chlorine to quench and dilute Taffy, excessive Gas will forward to Purification. This can upset C-201A. Therefore cutting load will be required to maintain control. Note: Send Operator in Area only to aid on steps A & B. Try to do from inside on MOD when possible. 2. Clear all Non-essential Personnel from the Purification Area. 3. Contact Solvents and request Immediate Transfer. 4. Put the Temperature Trend for the D-227 with High NCL3 on screen in Control Room. 5. If the temperature in the Pot is behaving normally, proceed as above and flood both the Taffy Pot and the Reboiler with cold Liquid Chlorine. 6. Notify Production Leader or Run Plant Engineer of the Analysis and the status of plans to transfer the Taffy. 7. An Incident Report should be filed and the Incident investigated (PSI Sheet). 8. Call contacts in R & D in Reactive Chemical Group. 9. Pot `Off Line' should be vented back into process. Note: The problem with NCL3 is that its decomposition can generate enough heat to initiate other reactions in the Pot (Chlorination of other Compounds present). These other reactions are the ones that generate the excessive pressures which could rupture a Pot. Data has shown that at Levels of NCL3 below 2% (20,000 ppm), the decomposition reaction should not generate Heat Levels great enough to start Chlorination Reactions. C. The above Procedures should be followed when dealing with Taffy with NCL3 Levels of 10,000-15,000 ppm or greater. If in addition to High NCL3 Level, the Pot is showing a tendency to heat up, seems to be Pressuring Up, or the Rate of Temperature Rise Alarm Is activated, Gate 1 should be notified of the problem. Explain CA-2 is in an unstable situation, possibly could have a Chlorine Spill If PSV's relieve as a minimum. The Reactive Chemical potential should be communicated. No Plant Personnel should enter the Area, unless absolutely necessary, to reduce potential for explosion. Communications with the Production Leader should be established and Plant Shutdown should be discussed. DO A 046096 CONFTDFNTTAI Chtof-Alkali II Operating Procedures EMERG098.DOC Dow Confidential 2/12/07,12:15 PM Page 3 of 3 IX. OPERATING LIMITS AND CONSEQUENCES OF DEVIATION This procedure contains unit operations that have been evaluated as critical as defined by OSHA PSM, S&LP, or Operating Discipline Standard. For specific operating limits and/or consequences of deviation, refer to `Operating Limits and Consequences of Deviation Data Sheet for Unit Operations' in the procedure library. Chtor-Alkali ll Operating Procedures EMERG098.DOC Dow Confidential DO A 046097 CONFTDFNTTAl. 2/12/97,12:15 PM Page 4 of 3 To: ELAINE HAUN To: Dept: CHLORO-ALKALI II Dept: Bldcr: 3601 Bldg: ANALYTICAL REPORT DOW CONFIDENTIAL INFORMATION La. R&D ANALYTICAL LABORATORIES I Sample No: 7641 Bldg 2503 | __L._ . ... Sample Date: 03/13/96 Preliminary Report Date: 03/18/96 Acct. No: 37 Final Report Date: 03/18/96 TITLE: GC/MS Analysis of Taffy from Chlor-Alkali II Author(s): C.A.RICHARDSON (LCL/2iXhtlAzla'nJ Phone No(s): 504-353-1722 Reviewer^T ^ ^ Report Archive - B1RPT_ST.DTF # 7641 Report Document: Databook Number: 6535-13 1 A taffy sample from CAII was submitted for GC/MS analysis to quanitate the organics. The sample was run using the HP5971A GC/MSD with a 30M DB-5 column. The sample was predominantly Carbon Tet with lesser amounts of Chloroform and ppm levels of Hexachloroethane and other organics. The peaks identified are labeled on the attached sheets with a listing of the approximate concentrations. Precise concentrations cannot be determined since standards are not available for all the compounds identified. DO A 046098 CONFTDFNTTAL File Operator Acquired Instrument Sample Name Misc Info Vial Number C:\HPCHEM\l\DATA\H7641A4.D CAR 14 Mar 96 7:42 am using AcqMethod TAFFY 5971 - In 6535-13: D-227B CL2 TAFFY 3/13/96 30M DB-5(.32MM/1UM)5MIN@50-250@10/MIN 1 DO A 04b099 OONFTDFNTT Al File : Operator : Acquired : Instrument : Sample Name: Misc Info : Vial Number: C:\HPCHEM\l\DATA\H7641A2.D CAR 13 Mar 96 9:26 am using AcqMethod TAFFY 5971 - In 6535-13: D-227B CL2 TAFFY 3/13/96 30M DB-5(.32MM/1UM)5MIN@50-250@10/MIN 1 DO A 046100 CONFTDFNTIAI PEAK COMPOUND APPROX. CONCENTRATIONS 1 CARBONIC-DICHLORIDE========= 200 PPM 2 METHYLENE CHLORIDE========== 260 PPM 3 CHLOROFORM================== 5.0 % 4 1.2- DICHLOROETHANE========== 40 PPM 5 CARBON TET================== BALANCE 6 TRICHLORO-ACETONITRILE====== 125 PPM 7 TRICHLOROPROPANOIC ACID,METHYL ESTER 140 PPM 8 BROMODICHLOROMETHANE======= 235 PPM 9 TRICHLOROACETALDEHYDE====== 280 PPM 10 DICHLOROACETYLCHLORIDE====== 1190 PPM 11 BROMOTRICHLOROMETHANE="==== 580 PPM 12 1.1.2- TRICHLOROETHANE======= 130 PPM 13 UNKNOWN================= 370 PPM 14 1,1-DICHLORO-l-NITRO-ETHANE ? 180 PPM 15 TRI CHLOROACETYLCHLORI DE==== 1835 PPM 16 PERCHLOR==================== 145 PPM 17 TRICHLOROFROPANONE======== 1115 PPM 18 TETRACHLOROETHANE========== 205 PPM 19 DIBROMODICHLOROMETHANE==== 60 PPM 20 TETRACHLOROETHANE========= 140 PPM 21 DIBROMODICHLOROETHANE==== 145 PPM 22 PENTACHLOROETHANE========== 545 PPM 23 TETRACHLOROPROPANONE====== 520 PPM 24 TRICHLOROACETONE============ 310 PPM 25 HEXACHLOROETHANE=========== 3750 PPM 26 PENTACHLORO-2-PROPANONE===== 1180 PPM 27 DIBROMO-2-PROPANONE========= 230 PPM 28 TETRACHLORO-2-PROPANONE===== 165 PPM 29 TETRAPHENYL PYRAZINE--===== 820 PPM 30 MW=234====================== 240 PPM 31 MW=2 3 2====================== 140 PPM 32 MW=234====================== 130 PPM 33 PERCHLOROPROPANE============ 325 PPM 34 HCBZ======================== 40 PPM ( ? LIBRARY IDENTIFICATION NOT CONCLUSIVE) >o DO A 0461 CONFIDENT!