Document ga846eKkZa4Q6L266JDno7w1L

fill DENVER POST Th.rtday,fly*. 23, 1956 3 Steam Boiler's Tilted for 120-Foot 'Flight' \- 'V PrvfS?^' .-y 405 PLAINTIFF'S EXHIBIT .1 BAB-369 *3W&f4 l|/1 "flts-l i pi? ! - - -" <1 ji'. "" f' . .. ! Denver Poet Photo* by In C*r Beily Jfillad to paps through maze of steel girders, a 93-ton steam drum makes a electric plant of the Public Service Co. at E. 62d and Franklin. The drum 1420-foot ascent to the top of framework ot the new Cherokee steam- ; is 53 feet long and its steel walls are 4% inches thick. 93.2 Ton Steel Drum Hoisted Above Plant Smoothly and easily, a gigantic there are no flaws that would steel drum more than 53 fee burst under load. long and weighing 93.2 tons was The drum Thursday continued hoisted 120 feet into the air Thurs to hang by the hoist cables while day at the new Cherokee steam- enormous horseshoe-shaped steel electric plant of the Public Serv slings were fitted under its ends ice Co., E. 62d Ave. and Frank to cradle the weight permanently. lin St. The boiler pipes also will hang The massive steel barrel, which from the top of the structure. It is the main steam drum atop the takes 620 tons of structural steel boiler of the first 100,000 kilowatt to support the boiler alone, Snow unit of the new power plant, rose said Thursday, and only 600 tons clear of the ground at 8:15 a. m of steel for the skeleton of the and shortly after 9:15 a. m. i' rest of the plant. The boiler will was swinging securely at the top eat up 1,375 tons of coal a day. of the 12-story structural steel after the plant starts operation framework already in place to about next July 1. support it. 19 MILES OF TUBING To get the long drum up through a maze of girders, it had to be tilted sharply. Mounted on the ground near the base of the structure was a twodrum hoist powered by a 150horsepower electric motor that wound up the 1-inch steel cable. This cable was doubled back 13 times through the tackle blocks to multiply the force, so the huge burden traveled up very slowly. This steam drum will be con nected to 19 miles of steel boiler tubing, varying from 2 to 3 inches in diameter. It will hold superheated steam at a pressure of 1,800 pounds per square inch and a temperature of 1,000 de grees Fahrenheit. "Believe it or not," said Ben A. Snow, construction superin tendent m charge of the erection job for Ebasco Services, Inc., "the steam entering the drum from the vertical boiler pipes will be red hot--if you could see it through the walls of the drum." The walls of the drum, from which the steam will flow down ward to feed the generator tur bine, are 4*4 inches thick. Yet every square inch of those walls has been X-rayed tb make sure Iff- WAD01408