Document Zn7DxRrvo4yBL5nvm269Qn94V

ALBRIGHT STATION* Monongohalo Powar Company Fairmont, Waif Virginia Unit) #1 ond f2 ore in operation. The fans for Unit #3 have been designed and ore being constructed. They wilt be lorger than the fans for the first two units. Boiler f3 will operate on the same type of fuel (pulverized coal) and it expected to generate one million pounds of sleom per hour. Belch boiler now in service is served by two Forced Draft ond two Induced Oraft Font with the following specifications! >. D. Fans Double hUl with radial Inlet vane*; outlet dampen; rain hoedi ond recirculating duct connection!. Capacity for each font it0,500 tfmi 100 f, 14.7'SP, HflO rpm, 348 hp. I, D. Fans Double inlet, tpeclel control type Inlet dampers ond outlet dampen. Capacity of eochi 107,000 cfm ot 350 F, 13J* SP, 800 rpm, 360 hp. Green Fans con show on excellent record of efficiency ond durability. They can be found In mony of the leading and recently completed utility ond Industrial power plants. They have boch of them a fund of knowledge about fan requirements and fon design. They serve their users well. 4 trmi, ltl**n * SS. IE IE M S Tual conomt-fat_ Ovi CW Me. tM tatl* il h**l Omen fem.Writ* let e(eey. COMPANY? 220 WATER TREATMENT i---- >.CetuM^ lfta while quick to develop, u ah to deteriorate. Under boiler opemKd conditions scale Is only tpartodvH^.`^l all, redittolved. The result, succeed fa catching up, j* M ance ot email bits of scale, Ml .. . removed by blowdown, laztead, you? i find they tend to eeeumulate In -4 ot alow circulation, where they taav '`ill later build op to harmful proportions. Normally, tor operating pressures ,,D N to 100 pai with fairly stable oondlUou, * you can catablUh a standard blowdown it practice and regulate feed ot ebonies! 'll treatment daUf by making a phosphate colorimetric teat o! boiler 1 water. With preasurea from 100 to 2S0 - psl you have to go further and eontzol blowdown by running dally tesla for the boiler water'# alkalinity and ehlorlda concentreIlona For pressures between 250 and 400 pak various additional tests become necessary depending on tbe ax* - teraal-treatraeat method you use u > well aa other specific problems that ds-, j mnnd greater attention and control Boiler Openings. When employing a new type ot treatment, you'll find it wise to Uke your belle: down (or it . least two checkups during the first six months. Then with satisfactory Internal conditions established, open It semi annually. The midyear opening senes . merely for washing out the unit to , maintain peak efficiency through the next six months and facilitate tbs thorough cleaning to follow. Where scale is causing deterioration, you'D need frequent eleancuta. Refrain treat turbinlng tho tubes of your boiler, ox- leas you bare no other choice. Turbia* log scores tube bends and greatly shortens tube life. Instead, p*i* * wire-brush rotary attachment through the tubes once yearly. BEARING FAILURES Men Who Know Plant Engineering KNOW THE VALUE OF EXPERIENCE AND ENGINEERING "KNOW-HOW" Behind each unit of McAlear control equipment is a half-century of specialized engineering experience reflected in an enviable reputation of dependable service! . The No. 228 Pilel-Operated Pressure Reducing Valve (left) Is accurately sensitive and dependable where positive and automatic control of reduced pressure Is required In steam service. McAlear strainers are recommended for all control valves, regulators, automatic trap installations and other uses where grit and scale are present. They are furnished for any purpose . . . "Y" and basket type construction ... Vi to 24 inch size range. friction of the lube. . And there's sods sliding friction too--especially between -balls and retainers in deep-groovo bear ings and where tbe rollers have becoma skewed. Studies show that rolling friction hinges on size of balls or roller*. Ths smaller these elements are, the higher the friction. Oddly enough, friction, traced to churning up or pushing aside the lubricant, ond pure hydrodynamic pressure tnay be much greater than normal rolling friction of tbe bearing elements. Then why lubricate? For one thing, lubricotion helps cut sliding frio tion. It also prevents seizure, carries Wrila fodoy for our buffef/fl No. 228 and No. I28A covering the Pitot Operated Pressure Reducing Vaive and * MeAleor Siminors McALEAR MANUFACTURING CO. 1901-1917 SOUTH WESTERN AVE. CHICAGO 8, ILL, U.S.A. FOWtt WCtMW ;U ;FW(t DCCCM8EK 19 controls f,, STEAM.WATER.AIR.0IL-MS