Download IEEE STD 1050-1989 Guide for Instrumentation and Control PDF

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Extra info for IEEE STD 1050-1989 Guide for Instrumentation and Control Equipment Grounding in Generating Stations [81p]

Sample text

9 presents the calculated system resistance for the rated flow, 'clean system' (minimum component pressure drops) case of our example. The following conditions are given: • Oil type - light turbine oil • Rated oil flow to system = 60 gallons per minute • Pipe size selected for an oil velocity of 5 ft/sec • System component arrangement and location of module (console) relative to equipment known Item (Location of Component) 150 SSU at lOO^F 60 SSU at 150°F (operating) 1000SSUat40°F Pressure Drop Comments 1.

F. 0015 IN/IN CLEARANCE. 25 PRELOAD 3479 LBS. 0 SPEED (KPM) KINGSBURY, INC. 79 • GPM The Development of an Auxiliary System Since bearings are not custom designed for each application, there are ranges of acceptable bearing loads. For hydrodynamic (oil film) bearings, the maximum acceptable load P, is approximately 500 PSI. This relationship holds for both radial (journal) and axial (thrust) bearings. ). Some critical equipment drivers (aero-derivative gas turbines) use high precision anti-friction bearings with pressurized lube oil systems operating at speeds in excess of 10,000 rpm.

This source must be properly sized and designed to be sure the system fluid conditions are as uniform as possible in the reservoir and not subjected to excess temperatures at fluid/heater interfaces. The heater assembly should also be designed to provide removal without draining the reservoir. 1, the following considerations and comments are offered for increased system reliability: Caution: Prior to opening any system connections or sampling fluids, obtain a site work permit to assure the area and conditions are safe for work or entry.

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