Document 0g1K9vZ50kKgGom48JxL772Yb

"This beats a carpet-! Technical Briefs (Continued from page 1541 Air Express con bring you supplies and equipment from any U.S. point--overnight. And that's bettor than oldstyle magic! Air Express is the fastest way you con find to ship or receivo. No delays, because shipments go oo every flight of tho Scheduled Airlines. What'a more you get special door-to-door service at no extra coat. With low Air Express rates, you can use this fastest service as a regular procedure. Let Air Express fcoep your business running fast--and smoothly. Sparify Air Express-Worlds fastest Shipping Servfca Uw rntm ipnrlnl pick-op and delivery In prtndpal UA towns and dike at no utn coat. y Moves on all flights of all 8choduiod Airlines. Air-roll betwqqn 22,000 off-airline offices. Trw < hlderyi Robber equipment users rcffularty gel replacement aorta by Air Exprcw so machines won't stand kilo. Recent shipment: i02-lb. carton plckod op 0 M, tbe lfith in NofalesvUla, Ind. Air-rail to Dallaa, delivered 9 a.m. following day. 799 miles, total coat only 26.78. Any distance inexpensive, too. Phono local Air Exprene Division, Railway Express Agency, for fast shipping action. AIR EXPRESS, A SERVICE OF RAILWAY EXPRESS AGENCY AND TOE SCHEDULED AIRLINES OF THE U.S. 174* (807c) 0.30 ppm average. This improvement ' comes directly from the new drum fa. temals. Samples at the saturated header drain read 0.66 ppm, and at the auper. heater sampling polota 1.0 ppm. ASMS Paper. Spring 1948 /netting. No copier available. Rcpairihc. Blades of' AdjustableBlade Tunsmu Wmt Stainless Steel, 6y Joel B Justin, consulting tngineer, and E T Davit, Indiana Mich igan Electric Co. Describee methodi of repairing blades of adjustable-blade hydraulic turbines with stainless steel 'end using precast-blade stainless-clid * inserts at the plants of the Kanawha Valley Power Co. About 5 tons of weld ing" t*ods were used in repairing esviu.lion of 646, sq ft of blade area in ths London, Mannei and Winfield plants. Mormet and London plants ore Ident ical. Pat in service in 1933, they oper ate under* 24-ft normal head. Each plant has two adjustable-blade turbines, rated 7600 and 7250 hp, and one . 6600-hp fixed-blade unit. The Winfield plant, which went into operation is 1937 under a 28-ft head, has three 9200-hp adjustable-blade turbines. . These plants operate at high-capodty factors and -st^yedueed head a large part of the year be'cooso of high tail water. Several units run over 8000 hr per year. They operate above their rated capacity, which no doubt increased tbs pitting of lha runner blades. Although somewhat,different repair methods were uiedAon some of the units, in genera) the same procedure was followed on all. The WinfieJd units were cavitated more as to area sad severity than at Marmot and London. Often periphery of lha blades was on* tirely gone, with holes through the udr ing ends. There were 98 oq ft of ihij surface to repair on the blades of * unit. The cast throat rings were CS"' fated % in. deep by 2 ft wide, sod pieces, holes went through the l#*"* steel cosing. On these rings, an 87oq area had to be repaired, making a to of 185 sq ft on eocb unit The P*j** describes these repoirs in detail 1" ing shaft sleeves repaired by spraying and machining in place. A Paper No. 48-F-l. ,,: The Slat Annual convention ^ i ess meeting of National 'Cod A*j . ^ held Oil 44 at the WaidOrMi**" New York. * POWER Ok"'"!*' '