ML20043F642
| ML20043F642 | |
| Person / Time | |
|---|---|
| Issue date: | 02/12/2020 |
| From: | Office of the Chief Human Capital Officer, Woodard Corp |
| To: | |
| Gary Callaway | |
| Shared Package | |
| ML20043F634 | List:
|
| References | |
| Download: ML20043F642 (59) | |
Text
Chapter 14 SOME OTHER ENGINES
Learning Objectives As a result of this chapter you will be able to:
- 1. Recognize basic similarities and differences between the engines that power EDGs at nuclear power plants.
- 2. Use the tabulation at the end of this chapter to identify EDGs and associated equipment at each nuclear power plant.
FM has more engines in NPP emergency power service than any other company. However, there are more EMD engines in nuclear service than any other design. Some features of the EMD engine are shown on the next few slides 17 4
Figure 14-1 EMD Cross-Section
EMD Engine View Showing Its "V" Configuration
EMD Engine 16-Cylinder Crankcase Views EMD Engine Drive Gears
EMD Engine Piston Carrier EMD Engine Piston -
ConRod Assembly
EMD Engine Power Assembly Packed in Shipping Container
EMD Engine Piston with Excessive Scuffing (Limit is 3 x 4 Inches)
EMD Engine Liner Bore Extensively Scuffed. Warrants Piston Inspection, Possible Power Assy Replacement.
EMD Engine Inspection of Piston Rings with Air Box Cover Removed EMD Photos Showing Problems that Could be the Result of Lubricating Oil Issues or Running at Light Load
EMD Engine Manufacturing EMD Engine Firing Order and Injection Timing Placard EMD EDG Engines 2-stroke cycle Vee Intake ports, 4 exhaust valves/cylinder Gear-driven turbocharger for scavenging and turbo Overriding gear/clutch to disengage from engine drive Lubed by engine oil + separate "soakback" system Unit fuel pump and injectors - No high pressure fuel lines from pumps to injector nozzles Two overhead camshafts - Rocker arms directly operate exhaust valves and unit fuel pump-injector
Cylinders - directly opposite each other via fork-and-blade piston connecting rods Common connecting rod bearing on single crank journal Connecting rods - no drilled oil passage to provide lube oil from journal bearing to wrist pin bearing Lubrication and cooling of pistons from frame-mounted "spitter" aimed at underside of each Figure 14-1 is an EMD Engine cross-section.
Figure 14-1 EMD Cross-Section
Figure 14-2 is an EMD general service data sheet.
Figure 14-2 EMD Engine Data Sheet
Cooper EDG Engines 4-stroke cycle "KSV" V16 and V20 cylinder engines Figure 14-3 is a diagram of the Cooper engine articulating connecting rods and bearings.
Figure 14-3 Cooper Engine Connecting Rods and Bearings
Cooper crankcase explosion events (see 12.6)
Figure 14-4 is a copy of the Cooper engine service data sheet.
Figure 14-4 Cooper Engine Data Sheet Figure 14-5 is a Cooper engine cross-section.
Figure 14-5 Cooper KSV Engine Cross-Section
Figure 14-7 is a Cooper engine timing bar graph.
This is typical for all 4-stroke cycle engines.
Figure 14-7 Cooper Engine Timing Bar Graph Nordberg EDG Engines 4-stroke cycle Vee Unique linkshaft cam shifting mechanism Advances fuel injection timing Advances air inlet valve closure Illustrated in Figure 14-8
Figure 14-8 Nordberg Engine Linkshaft Nordberg engine service data is illustrated in Figure 14-9.
Figure 14-9 Nordberg Data Sheet
Nordberg operating pressures and temperatures are illustrated in Figure 14-10.
Figure 14-10 Nordberg Data Sheet
Figure 14-21 Nordberg 4-Stroke Cycle, V-16 Engine Worthington EDG Engines 4-stroke cycle Opposite side connecting rods offset on single crankshaft journal Design problems with high pressure fuel lines 90 degree bends Cavitation erosion leaks Intended corrective action Replace with double-wall, high pressure flex tubing Route the fuel line tubing so as to avoid sharp bends
Figure 14-12 is a Worthington engine cutaway.
Figure 14-12 Worthington Engine Cross-Section
Figure 14-13 is a Worthington engine general service data sheet.
Figure 14-13 Worthington Data Sheet
Figure14-14 is a Worthington engine circle timing diagram. Typical for 4-stroke cycle engines.
Figure 14-14 Worthington Timing Diagram
SACM EDG Engines 4-stroke cycle 2 engines in tandem to power a single generator Governors arranged for load sharing Synthetic lube oil was incompatible with water Hard deposits behind piston rings Scuffing scoring of pistons & cylinder liners Rebuilt engines, switched to mineral-based lube oil
Figure 14-15 is a SACM engine general service data sheet.
Figure 14-15 SACM Data Sheet Figure 14-16 is a SACM generator general service data sheet.
Figure 14-16 Data Sheet Delaval EDG Engines 4-stroke cycle Enterprise RSV 16 cylinder Same design as Cooper KSV, but much larger Largest engine in EDG service 8,240 KW (515 KW/cylinder) 10,672 BHP (667 BHP/cylinder)
Each piston at peak loading:
340,000 lbs. 225 times/minute These forces are resolved within the engine structure and output shaft as power output, friction losses, compression and exhaust expulsion for other cylinders.
DeLaval engine service data is in Figure 14-17.
The parent company for this engine has changed as follows:
Enterprise Engine Delaval Turbine TransAmerica Corp.
IMO Delaval. They sold aftermarket service-support to Cooper Industries, now known as Cameron Compression Systems.
Figure 14-17 DeLaval Data Sheet
Figure 14-18 is a DeLaval engine cross section.
Figure 14-18 DeLaval Engine Articulating Connecting Rod Assembly Figures 14-19 and 14-20 show normal vs. abnormal tin smear on DeLaval pistons, which are 17" in diameter.
Figure 14-19 DeLaval Piston Skirt with Normal Tin Smear Figure 14-20 DeLaval Piston with Abnormal Tin Smear (Rebuilt Piston)
Reference Part 21 Report of 17 OCT 2011
Figure 14-22 DeLaval 4-Stroke Cycle, V-16 Engine Note the tabulation at the end of this chapter identifying the EDGs and associated equipment at most nuclear power plants.
END OF CHAPTER 14