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FM Global Property Loss Prevention Data Sheets

7-101
January 2012 Page 1 of 34

FIRE PROTECTION FOR STEAM TURBINES AND ELECTRIC GENERATORS

Table of Contents
Page 1.0 SCOPE .................................................................................................................................................... 3 1.1 Changes............................................................................................................................................ 3 2.0 LOSS PREVENTION RECOMMENDATIONS ........................................................................................ 3 2.1 Introduction ....................................................................................................................................... 3 2.2 Construction and Location............................................................................................................... 3 2.2.1 General ................................................................................................................................... 3 2.2.2 Structural Steel Protection ..................................................................................................... 32.2.3 Containment and Drainage .................................................................................................... 4 2.3 Occupancy ........................................................................................................................................ 6 2.3.1 Control, Seal and Lube-Oil Piping......................................................................................... 6 2.3.2 Hydrogen Supply for Electric Generator Cooling ................................................................... 7 2.3.3 Protective Equipment ............................................................................................................. 7 2.3.4 Control Rooms and Associated Equipment........................................................................... 7 2.3.5 Grouped Cable and Cable Spreading Rooms ....................................................................... 8 2.4 Protection ....................................................................................................................................... 10 2.4.1 General................................................................................................................................. 10 2.4.2 Protection from Oil Spray Fires ............................................................................................ 11 2.4.3 Protection from Pool and Three-Dimensional Spill Fires ..................................................... 11 2.4.4 Protection on Operating Floors............................................................................................ 15 2.4.5 Enclosed Turbine or Generator ............................................................................................ 17 2.4.6 Combustible Roof Protection ............................................................................................... 20 2.4.7 Outdoor Units....................................................................................................................... 20 2.4.8 Boiler Feed Pumps, Turbine and Electric Drivers, and Variable Speed Couplings ............ 20 2.4.9 Relay and Cable Spreading Rooms .................................................................................... 20 2.4.10 Distributed Control System (DCS) Rooms ......................................................................... 20 2.4.11 Switchgear.......................................................................................................................... 21 2.5 Operation and Maintenance ........................................................................................................... 21 2.5.1 Emergency Shutdown Procedure ........................................................................................ 21 2.5.2 Spray shield...