Aging, condition monitoring, and loss-of-coolant accident (LOCA) tests of class 1E electrical cables
- Sandia National Labs., Albuquerque, NM (United States)
This report describes the results of aging, condition monitoring, and accident testing of ethylene propylene rubber (EPR) cables. Three sets of cables were aged for up to 9 months under simultaneous thermal ([approx equal]100[degrees]C) and radiation ([approx equal]0.10 kGy/hr) conditions. A sequential accident consisting of high dose rate irradiation ([approx equal]6 kGy/hr) and high temperature steam followed the aging. Also exposed to the accident conditions was a fourth set of cables, which were unaged. The test results indicate that most properly installed EPR cables should be able to survive an accident after 60 years for total aging doses of at least 150--200 kGy and for moderate ambient temperatures on the order of 45--55[degrees]C (potentially higher or lower, depending on material specific activation energies and total radiation doses). Mechanical measurements (primarily elongation, modulus, and density) were more effective than electrical measurements for monitoring age-related degradation.
- Research Organization:
- Nuclear Regulatory Commission, Washington, DC (United States). Div. of Engineering; Sandia National Labs., Albuquerque, NM (United States)
- Sponsoring Organization:
- USNRC; Nuclear Regulatory Commission, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 7004842
- Report Number(s):
- NUREG/CR-5772-Vol.2; SAND-91-1766/2; ON: TI93004663
- Country of Publication:
- United States
- Language:
- English
Similar Records
Aging, condition monitoring, and loss-of-coolant accident (LOCA) tests of class 1E electrical cables. Ethylene propylene rubber cables, Volume 2
Aging, condition monitoring, and loss-of-coolant accident (LOCA) tests of Class 1E electrical cables: Summary of results
Related Subjects
ELECTRIC CABLES
AGING
NUCLEAR POWER PLANTS
LOSS OF COOLANT
ETHYLENE
MONITORING
PROPYLENE
RADIATION EFFECTS
RUBBERS
TESTING
THERMAL STRESSES
ACCIDENTS
ALKENES
CABLES
CONDUCTOR DEVICES
ELASTOMERS
ELECTRICAL EQUIPMENT
EQUIPMENT
HYDROCARBONS
NUCLEAR FACILITIES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYMERS
POWER PLANTS
REACTOR ACCIDENTS
STRESSES
THERMAL POWER PLANTS
220900* - Nuclear Reactor Technology- Reactor Safety
220200 - Nuclear Reactor Technology- Components & Accessories