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(Continued from page I) III IIIIIIII
<br />specified, Bttt/Ib. (az-received), volatile matter (dry bazis), ash
<br />fusion temperatures (AFT) and grind numbers below are TVA's
<br />by-plant minimums, while SO2JIb., ash (dry basis) and moisture
<br />contents are shown az allowable maximums. In all instances, a
<br />chlorine (dry) maximum of 0.29 percent applies.
<br />Colbert Units 1-4. 11,000 B[tr/Ib., 2 lbs. SOZ/mmB[u, 15 per-
<br />cent ash (dry), 13 percent moisture, 35 percent vol (dry), 1950-
<br />degrees ash fusion (H=W), 50 grind; however, 45 grind will be
<br />acceptable if the heating value is 12,000 Btu/Ib. Foreach increment
<br />decreaze in grindability index From 50 to 45, the heat value must
<br />increase by 200 Btu/I b. in the range from 11,000-12,000 Bttr/Ib.
<br />Colbert Unit 5. 11,000 Btu/Ib. (AR), 3.8 lbs. S02/mmBtu, I S
<br />percent azh (dry), 10 percent moisture, 35 percent vol (dry), 2300-
<br />degrees AFT (H=W), 50 grind.
<br />Johnsonville. 1 I ,500 Btu/Ib., 3.21bs. S02/mmB tu, I S percent,
<br />12 percent moisture, 30 percent vol (dry), 2100-degrees F AFT
<br />(H=W), 50 grind.
<br />Widows Creek Units !-6. 1 I ,000 Btu/Ib., 1.4 I bs. S02/mmBtu,
<br />I S percent ash (dry), 13 percent moisture, 27 percent vol (dry),
<br />1950~egrees AFT (H=W), 50 grind Grind exceptions are the
<br />same az for Colbert I3..
<br />Gallatin: 11,000 Btu/Ib., 4.8 lbs. S02/mmBtu (formerly 3.3
<br />S02/rnmBtu), i 5 percent ash, 13 percent moisture, 35 percent vol
<br />(dry), 1950-degrees AFT (H=W), 50 grind.
<br />Paradise Unit 3. 11,000 Btu/Ib., 5 lbs. 502/mntBtu, IS percent
<br />ash (dry), l3 percent moisture, 33 percent vol (dry), 2400.degree
<br />ash fluid temperature, 50 grind. Paradise 3 (raw coal). 9,800 Btu/
<br />Ib., 1.5 percent sulfur, 5.5 percent sulfur, 25 percent ash (dry), 10
<br />percent moisture; 33 percent vol (dry), 2400-degrees fluid, 50 grind.
<br />" Inquiries and proposals (no facsimiles) are to be directed to R.
<br />Stephen Blackburn, fuel buyer, Tennessee Valley Authority, Fuel
<br />Acquisition and Supply, 1101 Market St. LP SG, Chattanooga TN
<br />37402-2801.
<br />INDUSTRY
<br />DESERADO MINE HIT BY FIRE;
<br />WFA SEEKING REPLACEMENT COAL
<br />A fire was still burning at press time at Western Fuels Colorado's
<br />Deserado mine near Rangely CO, a week after a welding torch set
<br />off a methane excursiomt}tat forced the mine's evacuation. West-
<br />ern Fuels Assn. was arranging alternate coal supplies (or the
<br />mine's sole customer, Deseret Generation & Transmission Assn
<br />WFA spokesperson Ned Leonard said last week that the fire
<br />stanedalshiftchangebetwcen2:30and3:00p.m.onlan.31 when
<br />a maintenance crew was repairing the pan conveyor of the mi rte's
<br />longwall mining system near the tailgate. The crew had spread
<br />rock dust and taken methane readings and al l the other precaut ions
<br />necessary before welding underground, but s"hottly aftera~welder
<br />lit his torch, there was a methane excursion from coal left'on the
<br />mine roof. "Blue Hame danced along the roof along about four
<br />face shields," he said. The crew attempted to fight the fire, then
<br />evacuated the mine. ~~ ~'
<br />Despite the presence of the welding crew and extra miners at
<br />shift change, no one was hurt in the evacuation, which went
<br />according to plan, Leonard said. '
<br />Deserado mustered its own mine rescue team, which was
<br />reinforced by teams from Cyprus Amax's Twenrymile Coal Co.
<br />in Colorado and PacifiCorp's Energy West Mining in Utah,
<br />Leonard said. After conferring with officials from the Mi rte Safety
<br />& Health Administration, teams twice entered the mine, but both
<br />times were forced to retire when they encountered high metlianc
<br />concentrations, he said.
<br />Crews noticed a good deal of smoke, which they had not
<br />expected from a methane fire, Leornard said. The smoke was
<br />discovered to come from bttming cribbing near.the,tailgate.and
<br />when it burned away, a section of the rotif.fell in..The ioof;fall
<br />(Continued on page 3)
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