Design features and protection of valve actuator motors in nuclear power plants

Journal Article · Sat Sep 01 04:00:00 EDT 1990 · IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers); (USA)

OSTI ID:6546763

Dougherty, R H ^[1]; Richards, A E ^[2]; Kueck, J D ^[3]; Rebbapragada, R V

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1. Reliance Electric Co., Cleveland, OH (US)
2. Limitorgue Corp., Lynchburg, VA (US)
3. Carolina Power and Light Co., Raleigh, NC (US)

This paper presents a status report on the effort underway by the working group IEEE-NPEC-SC4.7, and discusses the performance requirements, selection, design, and protection of valve actuator motors (VAMs) commonly used as components in direct gear driven valve actuator assemblies in nuclear power plants. VAMs are short time rated, high torque-to-inertia ratio motors. The actuator manufacturer selects the performance parameters for the VAM based on the maximum thrust required by the valve for tight shutoff. Since valve actuators require a high starting torque, the rating system begins with the assignment of nominal starting torque. The requirement for minimum frame size dictates a minimal (running) torque and a minimum run time.

• OSTI ID: 6546763
• Journal Information: IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers); (USA), Journal Name: IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers); (USA) Vol. 5:3; ISSN 0885-8969; ISSN ITCNE
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220400* -- Nuclear Reactor Technology-- Control Systems
220900 -- Nuclear Reactor Technology-- Reactor Safety
ACTUATORS
CONTROL EQUIPMENT
DESIGN
EQUIPMENT
FLOW REGULATORS
LOAD MANAGEMENT
MANAGEMENT
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
OVERCURRENT
PERFORMANCE TESTING
POWER PLANTS
REACTOR PROTECTION SYSTEMS
REACTOR SAFETY
SAFETY
TESTING
THERMAL POWER PLANTS
VALVES