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Rms Empress of Britain 1931

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Rms Empress of Britain 1931 RMS EMPRESS OF BRITAIN 1931 OWNERS: CANADIAN PACIFIC STEAMSHIPS LTD BUILDERS: JOHN BROWN, CLYDEBANK Table of Contents 1. Overview of machinery spaces ......................................................................................................... 4 1.1. Boiler rooms .......................................................................................................................................................................................... 4 1.2. Oil bunkers ............................................................................................................................................................................................. 4 1.3. Diesel fuel bunkers .............................................................................................................................................................................. 4 1.4. Propulsion engines .............................................................................................................................................................................. 4 1.5. Main steam piping (Figure 1) ......................................................................................................................................................... 4 1.6. Gearboxes................................................................................................................................................................................................ 7 1.7. Electrical power generation ............................................................................................................................................................ 7 i. Emergency generating sets ....................................................................................................................................................................... 7 ii. Emergency Switchboard ........................................................................................................................................................................... 7 iii. Main Diesel generating sets ................................................................................................................................................................... 8 iv. Turbo-Generator sets ................................................................................................................................................................................. 9 2. Starting the main diesel generating sets ........................................................................................... 9 1.8. Main switchboard distribution ................................................................................................................................................... 10 3. Firing up the boilers ....................................................................................................................... 12 4. Main condensers and seawater circulating pumps .......................................................................... 12 5. Starting a turbo-generator ............................................................................................................. 13 6. The Feedwater and Condensate System (Figure 8) .......................................................................... 14 7. Starting main engines .................................................................................................................... 16 1.9. Main engines (forward engineroom) ....................................................................................................................................... 16 8. Getting under way ......................................................................................................................... 17 1.10. High-pressure and intermediate-pressure turbines ....................................................................................................... 17 1.11. The Starting Platforms ................................................................................................................................................................. 18 1.12. After engineroom starting platform ....................................................................................................................................... 19 9. Profile and Plan of Boiler Rooms .................................................................................................... 22 1.13. Uptakes ............................................................................................................................................................................................... 22 1.14. Fuel oil tanks .................................................................................................................................................................................... 22 1.15. Oil fuel units ..................................................................................................................................................................................... 22 1.16. Other auxiliary units ..................................................................................................................................................................... 22 10. Elevation and Plan of enginerooms ................................................................................................ 25 1.17. Diesel generator room ................................................................................................................................................................. 25 1.18. Forward engineroom.................................................................................................................................................................... 25 1.19. After engineroom ........................................................................................................................................................................... 25 1.20. Shafting and propellers ............................................................................................................................................................... 25 Figure 1 Plan of steam piping in enginerooms ................................................................................................................6 Figure 2 Emergency Generator set .......................................................................................................................................7 Figure 3 Emergency Switchboard .........................................................................................................................................8 Figure 4 Emergency distribution system ...........................................................................................................................8 Figure 5 One of the diesel generating sets .........................................................................................................................9 Figure 6 Section through Auxiliary ER, looking Forward ......................................................................................... 10 Figure 7 Main switchboard distribution ......................................................................................................................... 11 Figure 8 One of the main SW circulating pumps and its starter (aft ER) ........................................................... 13 Figure 9 The feedwater and condensate system ......................................................................................................... 15 Figure 10 The Forced LO Pumps in the Forward (L) and After (R) enginerooms .......................................... 16 Figure 11 Gauge panel at the forward end of the turbines ...................................................................................... 17 Figure 12 The forward ER starting platform ................................................................................................................. 18 Figure 13 Speed regulators and ammeters for FL Pumps ........................................................................................ 18 Figure 14 Aft ER Starting Platform .................................................................................................................................... 19 Figure 15 Elevation and Plan of Boiler Rooms up to the ER bulkhead ............................................................... 21 Figure 17 Elevation of Enginerooms ................................................................................................................................ 23 Figure 18 Plan of Enginerooms .......................................................................................................................................... 24 Figure 19 Shaft tunnel of a large liner .............................................................................................................................. 26 STARTING RMS EMPRESS OF BRITAIN 1. Overview of machinery spaces 1.1. Boiler rooms The ship is (or was) a quadruple screw Canadian Pacific liner fitted with two Scotch fire-tube boilers at 200lb/in2, one Johnson water-tube boiler and eight Yarrow 5-drum water-tube boilers, operating at 425lb/in2, 725°F superheated. In SI units this converts to 13.8bar saturated (198°C) for the Scotch boilers, and 29bar, 385°C superheated. At 29bar the saturated temperature is 234°C, so the boilers operate at 151°C superheat. The boilers are arranged in 2 boiler rooms, one forward
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