Seismic evaluation of a large nuclear pump bearing using non-linear dynamic analysis

Conference · Sat Jan 01 00:00:00 EST 1983 · Am. Soc. Mech. Eng., (Pap.); (United States)

OSTI ID:5625425

Huber, K A; Hugins, M S

Hydrostatic bearings of a large vertical pump using sodium as the lubricant were critically examined to determine their ability to withstand seismic loads. Initial linear dynamics analyses predicted journal displacements to exceed bearing clearance by a ratio of 3:1. Equivalent time-history excitations were then developed from the response spectra to determine the number, magnitude, and duration of the bearing impact loads. Predicted loads were further reduced by 50% by modeling non-linear bearing characteristics normally present but not generally included in conventional linear analyses. Results are presented of the comprehensive design evaluation performed, based on these non-linear predictions, that assess stress, wear, and fatigue to demonstrate hydrostatic bearing integrity.

• Research Organization: Energy Systems Development Center, Byron Jackson Pump Division, Borg-Warner Corporation, Carson, California
• OSTI ID: 5625425
• Report Number(s): CONF-830607-
• Journal Information: Am. Soc. Mech. Eng., (Pap.); (United States), Vol. 83-PVP-52; Conference: American Society of Mechanical Engineers pressure vessel and piping conference, Portland, OR, USA, 19 Jun 1983
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
HYDROSTATIC BEARINGS
FATIGUE
IMPACT STRENGTH
STRESS ANALYSIS
WEAR
NUCLEAR POWER PLANTS
PUMPS
DYNAMIC LOADS
NONLINEAR PROBLEMS
RESPONSE FUNCTIONS
SEISMIC EFFECTS
SODIUM
ALKALI METALS
BEARINGS
ELEMENTS
FUNCTIONS
MECHANICAL PROPERTIES
METALS
NUCLEAR FACILITIES
POWER PLANTS
THERMAL POWER PLANTS
220200* - Nuclear Reactor Technology- Components & Accessories