OCR Text |
Show TEST CONDITIONS Waste Characteristics The high-level PCB liquids that were fed to the Secondary Combustor in all five tests and that were used to formulate the PCB-contaminated soil and fuel used in the first three tests were liquids that had been drained from non-mineral oil transformers at ENSCO's transformer decommissioning facility. The PCB. Chlorine and BTU contents of these liquids, as determined from composite samples collected during each test are presented in Tables 1 and 2. The PCB content of the high-level PCB liquids averaged 61% (Table 1) versus the anticipated 46%. Also, the chlorine content of these liquids averaged 43% (Average of the first three HCl/particulate part of the test--Table 2) versus the anticipated 40%. The PCB-contaminated fuel fed to the kiln burner in the first three tests of Trial burn #1 was formulated by mixing 63% (by .wt . ) of the high-level PCB liquids with 37% (by.wt.) of clean fuel in a storage tank. The resulting mixture was kept mixed by recirculating pumps. The PCB. chlorine and BTU contents of this mixture, as determined from composite samples collected during each test are presented in Tables 1 and 2. The PCB content of this mixture averaged 29% (Table 1) versus the planned 4 . 5%. This higher content was formulated to offset, in part, the lower-than-planned introduction of PCBs to the kiln via the feed of PCB-contaminated soils which could be fed at a rate of only 4000 lb/hr rather than 8000 Ib/hr (because of the kiln's physical limitation at the time of the test). For the same reason, the chlorine content of the mixture averaged 20% (Table 2) versus the planned 4.5% . . The PCB-contaminated soil fed to the kiln in the first three tests was formulated by mIxIng 12% of high-level PCB liquids with 88% of moist, clean sandy soil. The mixture used in each test was formulated several hours before the test and properly stored. The PCB, chlorine and BTU content of the mixture as determined from composite samples collected during each test are presented in Tables 1 and 2. The PCB conten~ of the mixture averaged 1.8% (Table 1) versus the planned 5.5%. This lower contamination level was formulated to avoid creating a mixture having free liquids. Also, for the same reason, the chlorine content of the mixture averaged 3.6% versus the planned 4.8%. The PCB capacitors fed to the kiln in Test 5 were pre-shredded at ENSCO's El Dorado facility, placed in 30-pound fiberboard drums and stored in a warehouse until just before the initiation of the test. The calculated PCB and chlorine contents (Table 2) of the capacitor feed was 18% and 10.2% respectively were less than the anticipated values of 36% and 16%. The during minute Waste Feed Rates computer logged the waste feed rate for every 15 minutes the test. The computed waste rate is the average of all the 15 waste rate readings for that part of the test. Separate waste -5- |