Ethylene propylene cable degradation during LOCA research tests: tensile properties at the completion of accelerated aging
Six ethylene-propylene rubber (EPR) insulation materials were aged at elevated temperature and radiation stress exposures common in cable LOCA qualification tests. Material samples were subjected to various simultaneous and sequential aging simulations in preparation for accident environmental exposures. Tensile properties subsequent to the aging exposure sequences are reported. The tensile properties of some, but not all, specimens were sensitive to the order of radiation and elevated temperature stress exposure. Other specimens showed more severe degradation when simultaneously exposed to radiation and elevated temperature as opposed to the sequential exposure to the same stresses. Results illustrate the difficulty in defining a single test procedure for nuclear safety-related qualification of EPR elastomers. A common worst-case sequential aging sequence could not be identified.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5194567
- Report Number(s):
- NUREG/CR-2553; SAND-82-0346; ON: DE82019506; TRN: 82-018899
- 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
Initiation of Experimental Campaign to Address Knowledge Gaps Related to Simultaneous Thermal and Gamma Radiation Aging of Crosslinked Polyethylene and Ethylene-Propylene Rubber Cable Insulation
Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
36 MATERIALS SCIENCE
BWR TYPE REACTORS
LOSS OF COOLANT
REACTOR MATERIALS
THERMAL STRESSES
POLYETHYLENES
PHYSICAL RADIATION EFFECTS
TENSILE PROPERTIES
PROPYLENE
PWR TYPE REACTORS
ELECTRIC CABLES
ELECTRICAL INSULATORS
REACTOR SAFETY
ACCIDENTS
ALKENES
CABLES
CONDUCTOR DEVICES
ELECTRICAL EQUIPMENT
EQUIPMENT
HYDROCARBONS
MATERIALS
MECHANICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYMERS
POLYOLEFINS
RADIATION EFFECTS
REACTOR ACCIDENTS
REACTORS
SAFETY
STRESSES
WATER COOLED REACTORS
WATER MODERATED REACTORS
220900* - Nuclear Reactor Technology- Reactor Safety
210100 - Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled
210200 - Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
360403 - Materials- Polymers & Plastics- Mechanical Properties- (-1987)
360406 - Materials- Polymers & Plastics- Radiation Effects- (-1987)