An approach to assessing readiness based logistic support policies

The third phase of the Readiness Based Sparing (RBS) process is called life cycle maintenance. The key to this phase is answering the questions, "How are we doing?" and "How can we do better?" Since RBS sparing loads have been in the fleet for some time, it must now be determined whether the goals and predictions made at the outset are being met. Assessments are often out-of-date, or are not available for the specific equipment under study. They may not use the same criteria for failures or replacements that are needed for sparing determinations and do not include a key measurement for RBS use, gross (supply) effectiveness. Also, from a program management point-of-view, these studies are time-consuming and expensive. This paper deals with the Naval Sea Logistics Center's (NavSea-LogCen) efforts to create an assessment tool that is automated, timely, user-friendly, for the purposes of computing logistics indicators such as mean time between failures (MTBF), mean time to repair (MTTR), and mean requisition response time (MRRT) as well as achieved gross effectiveness. In turn, these indicators will be used by the NavSea TIGER simulation model to compute operational availability (Ao).