Resolving plant operational issues related to pressurizer safety relief valve piping

Conference · Wed Nov 01 04:00:00 EST 1995

OSTI ID:124703

Bain, R A ^[1]; Testa, M F ^[2]

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1. Stone and Webster Engineering Corp., Boston, MA (United States). Mechanical Engineering Div.
2. Duquesne Light Co., Shippingport, PA (United States). Mechanical Engineering Dept.

Pressurizer safety and relief valve (PSARV) piping has many technical issues related to the qualification and operation of the system that have been addressed at Beaver Valley Unit 2. The PSARV piping is part of a system that must meet Code requirements while being subjected to very significant fluid transient loadings. Valve components include safety valves, power operated relief valves (PORVs), and motor operated block valves. Fluid slugs upstream of these valves can be steam or can be hot or cold water, resulting in a significant variance in possible slug densities. Problems with design options and hardware installed to decrease slug density such as heat tracing, and the susceptibility of the PORVs to leak are issues that affect plant operation, efficiency and cost effectiveness.

• OSTI ID: 124703
• Report Number(s): CONF-950740--; ISBN 0-7918-1332-0
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
22 GENERAL STUDIES OF NUCLEAR REACTORS
BEAVER VALLEY-2 REACTOR
DESIGN
DRAINAGE
LEAKS
OPERATION
PIPES
PRESSURE RELEASE
PRESSURIZERS
PRIMARY COOLANT CIRCUITS
REACTOR SAFETY
RELIEF VALVES
TEMPERATURE CONTROL