Seismic behavior of the 18-inch primary coolant pipes located in the 105-N Building
The primary coolant system, PC(S) and PC(R), in the 105-N Building and the emergency water system are designed for a horizontal acceleration of 0.5 gravity. The rest of the NPR piping, including the primary coolant system located in the 109-N Building, is designed for 0.2 gravity. This report, however, covers only the seismic behavior of the 18-inch primary coolant pipes located in the 105-N Building. Analyses described herein confirm the design bases and adequacy of the 18-inch primary coolant pipes in the 105-N Building to resist, without serious damage, seismic forces equivalent to those produced by a local earthquake of magnitude equal to the most severe earthquake experienced on the west coast of the United States since 1906. Although the natural periods of vibration of the primary piping loops in the 105-N Building lie within the region wherein local earthquakes excite maximum dynamic effects in structural and piping systems, the design of the primary coolant piping and its support system is sufficient to keep maximum stresses in the 18-inch piping well below the maximum allowed. Lateral deflections during a severe earthquake are not expected to exceed three inches in the long horizontal runs or in the vertical runs of the individual piping loops.
- Research Organization:
- General Electric Co., Richland, Wash. (USA). Hanford Atomic Products Operation
- DOE Contract Number:
- EY-76-C-06-1857
- OSTI ID:
- 5010428
- Report Number(s):
- HW-76691
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
220700 -- Nuclear Reactor Technology-- Plutonium & Isotope Production Reactors
220900* -- Nuclear Reactor Technology-- Reactor Safety
COOLING SYSTEMS
EARTHQUAKES
ENRICHED URANIUM REACTORS
GRAPHITE MODERATED REACTORS
LWGR TYPE REACTORS
N-REACTOR
PIPES
PLUTONIUM PRODUCTION REACTORS
POWER REACTORS
PRIMARY COOLANT CIRCUITS
PRODUCTION REACTORS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTORS
SEISMIC EFFECTS
SEISMIC EVENTS
WATER COOLED REACTORS