Spallation Neutron Source Availability Top-Down Apportionment Using Characteristic Factors and Expert Opinion
Apportionment is the assignment of top-level requirements to lower tier elements of the overall facility. A method for apportioning overall facility availability requirements among systems and subsystems is presented. Characteristics that influence equipment reliability and maintainability are discussed. Experts, using engineering judgment, scored each characteristic for each system whose availability design goal is to be established. The Analytic Hierarchy Process (AHP) method is used to produce a set of weighted rankings for each characteristic for each alternative system. A mathematical model is derived which incorporates these weighting factors. The method imposes higher availability requirements on those systems in which an incremental increase in availability is easier to achieve, and lower availability requirements where greater availability is more difficult and costly. An example is given of applying this top-down apportionment methodology to the Spallation Neutron Source (SNS) facility.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC05-96OR22464
- OSTI ID:
- 14313
- Report Number(s):
- ORNL/TM-1999/206; SNS Doc. No. 102020000TR0001R00; SNS Doc. No. 102020000TR0001R00; TRN: US0110997
- Resource Relation:
- Other Information: PBD: 1 Oct 1999
- Country of Publication:
- United States
- Language:
- English
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Establishing availability requirements using characteristics factors and expert opinion
Establishing Availability Requirements Using Characteristics Factors and Expert Opinion