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Reducing Fuel Costs — Waukesha (continued from page 39) parts interchangeability, all pis- tons, piston rings, connecting rods, cylinder heads and liners, injec- tion pumps, and nozzles are inter- changeable among all AT25 models. Main bearings, camshaft segments, and piping components are common within the in-line and V configurations. Features for ease of mainte- nance include quick-access covers for camshafts and main bearings, and a provision for quick removal of rocker arm covers for valve ad- justments. Water, lube oil, and fuel transfer pumps are located on the front of the engine for ease in maintenance. Hydraulic tension- ing of main bearing studs and con- necting rod studs is accomplished with specially designed tools to in- sure accurate loading of these crit- ical joints. WESTINGHOUSE Circle 95 on Reader Service Card Combustion trim control sys- tems manufactured by Westing- house Electric's Combustion Con- trol Division are saving $168 a day in fuel costs aboard Moore McCormack Bulk Transport's t worldwide ds in Marine tic products, and repair... 7 » 39,232-dwt tanker Mormacsun. Each system installed on the ship's two boilers consists of a Westing- house Hagan Model 211 heavy- duty oxygen analyzer and a Model 1400 microprocessor-based oxygen trim controller. Operating at an average speed of 15 knots, the 15,000-shp Mor- macsun burns about 16,600 gal- lons of fuel oil per day. Prior to in- stallation of the combustion control systems, the air-to-fuel ratio in the boilers was adjusted manually based on visual observation of flue gas and use of a hand-held flue gas analyzer. Though some excess air is necessary for smoke-free opera- tion, the amount of oxygen in the flue gas is a good indication of combustion efficiency, as it is di- rectly proportional to excess air. Too much excess air results in dol- lar losses because extra fuel is burned to heat the excess; too lit- tle excess air increases costs be- cause unburned fuel goes up the stack. The systems aboard the Mor- macsun have consistently con- trolled the excess oxygen at levels ranging from 2.5 to 3 percent, a reduction of at least 1 percent from previous operation. Mormac engineers believe a 1-percent re- duction of excess oxygen produces fuel savings of at least three bar- rels of oil per day in each boiler. Based on these calculations, Moore McCormack achieved a payback on the equipment alone in about eight months. Including the cost of installation, the payback on the total package was about 15 months. IBM's Navy Contract For Sonar Systems Increased To $73+ Million IBM Corporation, Federal Sys- tems Division, Manassas, Va., is being awarded a $25,615,229 in- crease to a previously awarded firm-fixed-price contract for the AN/BQQ-5 sonar. The total value of the contract is increased to $73,889,499 by this action. The Naval Sea Systems Command, Washington, D.C., is the contract- ing activity. New Literature Offered On Aqualer® Ultraviolet Purification Systems Potable water is made safe for consumption with the new Aqua- lert® Ultraviolet Purification Sys- tems from Bull and Roberts of Murray Hill, N.J. Designed in ac- cordance with U.S. Public Health Service requirements, these low cost, economical, and compact sys- tems are simple to install and range in size from 480-3,000 gph. For free literature completely describing the new Aqualert® systems, Circle 79 on Reader Service Card 15 ppm Bilge Alarm Model BA 200 Oilarm Reliable Easy to Install Biospherics Incorporated is proud to introduce OILARM Model BA-200. A high quality, low maintenance oil-in- water content meter that meets all bilge water discharge requirements of the Marpol Treaty and IMO Resolution A (393)(x) Price and Delivery Information Available Upon Request Specifications • Threshold Adjustable 2-100 ppm • Output-form C Contacts Rated at 2A Audio Alarm. Visual Alarm • Alarm Delay Adjustable • Size 151 3x6'. x 5 ? • Mounting 2" Navy Range • Power Requirements: 117VAC 60 Hz .. 60 Watts • Weight—15 lbs. (6.6 kilos) • Mechanically Self-Cleans the Optical Windows • Samples On Line Every 8.5 Seconds • Rugged Construction • Compact • Easy To Install • All Wetted Parts Corrosion Resistant CS INCORPORATED Telephone: 301 770-7700 Telex: 908-740 TM Engineering Office: 5001-F Forbes Blvd. Lanham. MD 20706 Sales Office: 4928 Wyaconda Rd. Rockville. MD 20852 arm U.S. COAST GUARD APPROVED Circle 201 on Reader Service Card You need experienced, effective, knowledgable sales/technical representation for your marine/industrial products on the West Coast Contact: Lawless Enterprises P.O. Box 278 San Marcos, Ca. 92069 (619) 749-3910 Bill Lawless, owner "Suppor standari Electron service When purchasing marine electronic products or service look for the NMEA (National Marine Electronics Association) logo. In the U.S . 80% of all marine electronic manufacturers and 50% of all marine electronic dealers are qualified members of this non- profit organization. The NMEA facilitates assurance of quality in design, production, installation, repair and service of marine electronic products and service Send requests for a complimentary list of qualified NMEA members and What is NMEA7 ' to: NMEA: 938 Main St. Chatham. MA 02633. Or call (617) 945-3359. 40 Circle 199 on Reader Service Card Circle 200 on Reader Service Card Maritime Reporter/Engineering News
