- Author
-
LaChance, J.
|
Nowlen, S. P.
|
Wyant, F.
- Title
- Cable Hot Shorts and Circuit Analysis in Fire Risk Assessment.
- Coporate
- Sandia National Labs., Albuquerque, NM
- Sponsor
- Department of Energy, Washington, DC
Nuclear Regulary Commission, Washington, DC
- Report
-
SAND99-1257C,
May 19, 1999,
7 p.
- Distribution
- AVAILABLE FROM National Technical Information Service (NTIS), Technology Administration, U.S. Department of Commerce, Springfield, VA 22161. Telephone: 1-800-553-6847 or 703-605-6000; Fax: 703-605-6900. Website: http://www.ntis.gov
- Contract
- DE-AC04-94AL85000
- Keywords
-
fire risk assessment
|
cables
|
circuits
|
electrical faults
- Identifiers
- Probabilistic Risk Assessment (PRA); fire incuded circuit faults
- Abstract
- Under esisting methods of probabilistic risk assessment (PRA), the analysis of fire-induced circuit faults has typically been conducted on a simplistic basis. In particular, those hot-short methodologies that have been applied remain controversial in regards to the scope of the assessments, the underlying methods, and the assumptions employed. To address weaknesses in fire PRA methodologies, the USNRC has initiated a fire risk analysis research program that includes a task for improving the tools for performing circuit analysis. The objective of this task is to obtain a better understanding of the mechanisms linking fire-induced cable damage to potentially risk-significant failure modes of power, control, and instrumentation cables. This paper dtscusses the current status of the circuit analysis task.