Correlation of electrical reactor cable failure with materials degradation
Complete circuit failure (shortout) of electrical cables typically used in nuclear power plant containments is investigated. Failure modes are correlated with the mechanical deterioration of the elastomeric cable materials. It is found that for normal reactor operation, electrical cables are reliable and safe over very long periods. During high temperature excursions, however, cables pulled across corners under high stress may short out due to conductor creep. Severe cracking will occur in short times during high temperatures (>150/sup 0/C) and in times of the order of years at elevated temperatures (100/sup 0/C to 140/sup 0/C). A theoretical treatment of stress distribution responsible for creep and for cracking by J.E. Reaugh of Science Applications, Inc. is contained in the Appendix. 29 refs., 32 figs.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5612320
- Report Number(s):
- NUREG/CR-4548; SAND-86-0494; ON: TI86010812
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
ELECTRIC CABLES
FAILURE MODE ANALYSIS
TESTING
NUCLEAR POWER PLANTS
REACTOR MATERIALS
CRACK PROPAGATION
CREEP
EMBRITTLEMENT
MATERIALS TESTING
STRESSES
CONTAINMENT SYSTEMS
DIELECTRIC PROPERTIES
FAILURES
RELIABILITY
RESEARCH PROGRAMS
CABLES
CONDUCTOR DEVICES
CONTAINMENT
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ENGINEERED SAFETY SYSTEMS
EQUIPMENT
MATERIALS
MECHANICAL PROPERTIES
NUCLEAR FACILITIES
PHYSICAL PROPERTIES
POWER PLANTS
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
THERMAL POWER PLANTS
220200* - Nuclear Reactor Technology- Components & Accessories
360103 - Metals & Alloys- Mechanical Properties
360104 - Metals & Alloys- Physical Properties