Published 1996 | Version v1
Report Restricted

Torsional fatigue model for limitorque type SMB/SB/SBD actuators for motor-operated valves

Creators

  • 1. Kalsi Engineering, Inc., Sugar Land, TX (United States)

Description

Kalsi Engineering, Inc. has recently developed a computer program to predict the torsional fatigue life of Limitorque Type SMB/SB/SBD actuators for motor-operated valves under given loading levels, including those that exceed the ratings. The development effort was an outgrowth of the open-quote Thrust Rating Increase close-quote test program. The fatigue model computes all pertinent stress components and their variations as a function of the loading ramp. The cumulative damage and fatigue life due to stress cycling is computed by use of a modification of Miner's rule. Model predictions were validated against actual cyclic loading test results

Files

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Additional details

Publishing Information

Imprint Title
Proceedings of the 4th NRC/ASME symposium on valve and pump testing
Imprint Pagination
719 p.
Journal Page Range
p. 1B.1-1B.15.
Report number
NUREG/CP--0152

Conference

Title
4. NRC/ASME symposium on valve and pump testing in nuclear power plants.
Dates
15-18 Jul 1996.
Place
Washington, DC (United States).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
28013957
Subject category
S22: GENERAL STUDIES OF NUCLEAR REACTORS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ACTUATORS; COMPUTERIZED SIMULATION; ELECTRIC MOTORS; FATIGUE; NUCLEAR POWER PLANTS; TORSION; VALVES
Descriptors DEC
CONTROL EQUIPMENT; ELECTRICAL EQUIPMENT; EQUIPMENT; FLOW REGULATORS; MECHANICAL PROPERTIES; MOTORS; NUCLEAR FACILITIES; POWER PLANTS; SIMULATION; THERMAL POWER PLANTS

Optional Information

Secondary number(s)
CONF-9607103--.