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RECORD NUMBER: 44 OF 48

Main Title Thermal degradation products from dielectric fluids /
Author Erickson, Mitchell D.; Erickson, M. D.; Cole, C. J.; Flora, J. D.; Gorman, P. G.; Haile, C. L.
CORP Author Midwest Research Inst., Kansas City, MO.;Environmental Protection Agency, Washington, DC. Office of Toxic Substances.
Publisher U.S. EPA,
Place Published Washington, D.C.
Year Published 1984
Report Number EPA Contract no. 68-02-3938; EPA 560/5-84-009; EPA-68-02-3938; MRI-8201-A
Stock Number PB85-138535
OCLC Number 41416780
Subjects Insulating oil; Transformers; Combustion products; Pyrolysis; Air pollution; Samples; Industrial hygiene; Degradation; Thermal degradation; Flammability testing; Polychlorinated biphenyls; Toxic substances; Indoor air pollution; Polychlorinated dibenzodioxins; Polychlorinated dibenzofurans; Dibenzodioxin/tetrachloro; Dibenzofuran/tetrachloro
Subject Added Ent Liquids.; Decomposition (Chemistry); Polychlorinated biphenyls.; Air--Pollution.
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=91013AU8.txt
Holdings
Library   Call Number Additional Info Location Date Modified
EJBD ARCHIVE EPA 560-5-84-009 Headquarters Library/Washington,DC 11/04/2013
EJED EPA 560-5-84-009 OCSPP Chemical Library/Washington,DC 08/10/2001
EOAD EPA 560/5-84-009 Region 8 Technical Library/Denver,CO 11/04/2005
NTIS PB85-138535 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation viii, 90 p. : ill., 28 cm.
Abstract Electrical transformer fires can cause extensive smoke damage, especially when polychlorinated biphenyls (PCBs) are involved since they can form polychlorinated dibenzofurans (PCDFs) and other toxic by-products. To characterize the potential for by-product formation, this study was undertaken to optimize conditions for PCDF formation from PCBs and to study the potential for formation of PCDFs and polychlorinated dibenzodioxins (PCDDs) from combustion of selected dielectric fluids, including those contaminated with PCBs. A bench-scale thermal destruction system was used to combust the samples. The dielectric fluid was fed continuously using a syringe pump. The concentrations of CO, CO2, and O2 in the effluent were monitored continuously. The entire effluent from the thermal destruction system was passed through an XAD-2 trap to collect PCDFs and other semivolatile organics. The XAD-2 trap and a rinse of connective tubing were Soxhlet extracted. Extracts were cleaned using column chromatography to isolate the PCDFs and PCDDs. All samples were analyzed for PCDFs using HRGC/EIMS in the selected ion monitoring mode. The results of this work indicate that the optimum conditions for PCDF formation from PCBs are near 675C for 0.8 s or longer, with 8% excess oxygen. Under these conditions, percent levels of PCDFs are formed from mineral oil or silicone oil contaminated with PCBs at 5ppm or greater. PcDFs and PCDDs are also formed from a trichlorobenzene dielectric fluid which contained no detectable PCBs.
Notes EPA 560/5-84-009 "Work Assignment no. 23. Interim Report no. 1. EPA Contract no. 68-02-3938. MRI Project no. 8201-A(23)." "November 19, 1984." "The work was done at Midwest Research Institute (MRI) during the period May 22, 1984 to November 19, 1984."
Author Added Ent
Kutz, Frederick W.;
Heggem, Daniel T.
Corporate Au Added Ent United States. Environmental Protection Agency. Office of Toxic Substances. Field Studies Branch.; Midwest Research Institute (Kansas City, Mo.)
NTIS Title Notes Interim rept. no. 1.
PUB Date Free Form 19 Nov 84
Category Codes 13B; 9A; 6J; 68A#; 68G; 49G; 57U
NTIS Prices PC A05/MF A01
Primary Description 500/00
BIB Level m
Control Number 507412328
OCLC Time Stamp 20131031101413
Cataloging Source OCLC/T
Language eng
Origin OCLC
Type MERGE
OCLC Rec Leader 01575cam 2200361Ia 45020


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