248 STANDARD LUBRICATING OIL SYSTEM FOR GEARED TURBINES. 



There is no doubt that an adequate lubricating oil system is essential to the 

 successful operation of the geared turbine, and while its maintenance cost is small, 

 the consumption of oil through leaks and other sources amounting to about half a 

 barrel per month, the first cost of installing such a system is quite high. It is 

 believed, however, that an increase in efficiency will be obtained in the reduction 

 gears of the future, which will permit of a considerable reduction in the size, and 

 consequently the cost of the lubricating oil system. 



List of Documents and Plates. — (o) Plan E-i 1000-3, showing proposed 

 arrangement of lubricating oil system for units up to and including 3,000 horse- 

 power, dated July 26, 1918. (See Plate 105.) 



(&) Plan E-i 1 000- 1, showing arrangement of lubricating oil system for geared 

 turbine units up to and including 3,000 horse-power, dated September 9, igi8. (See 

 Plate 106.) 



(c) Technical Order No. 75 with documents as amended July 15, 1919. (See 

 'pages 248 to 262, and Plates 107, 108 and 109.) 



(rf) Specifications for electric alarm system. ( See pages 262 to 264. ) 



{e) Photograph of discharge strainer. (Plate no.) 



(/) Photograph of discharge strainer, disassembled. (Plate in.) 



{g) Photograph of centrifugal separator. (Plate 112.) 



{h) Sectional cut of centrifugal separator. (Plate 113.) 



(;■) Photograph of filter. (Plate 114.) 



{k) Arrangement plan of electric alarm system. (Plate 115.) 



DOCUMENT C. 



UNITED STATES SHIPPING BOARD, EMERGENCY FLEET CORPORATION, 



PHILADELPHIA, PA. 



Construction Division. 



Technical Order No. 75. 



July 15, 1919 (9/16/18). (As amended) 7/15/19. 



To : District Managers and Turbine Inspectors for Action. 



To: Steel Shipbuilders and Others for Information. 



Subject: Standard Lubricating Oil System for Geared Turbines. 



Enclosures: (o) One copy of specifications No. K-275-T — 3,000 for lubricating 

 oil system for geared-turbine units of approximately 3,000 horse-power, and appli- 

 cation of system to other sizes, and twin-screw installations. 



(6) List of approved equipment. 



(c) Copy of Navy Department Print No. B-56, standard thermometer fittings. 

 (Plate 107.) 



{d) Arrangement of lubricating oil system for geared turbine units up to and 

 including 3,000 horse-power. Drawing No. E-i 1000-10. (Plate 108.) 



