Analysis of deferred work for San Diego Based DDGS

Abstract

The Continuous Maintenance Program is designed to maintain ships at the highest level of material condition while keeping the ships at the optimum operational readiness. In this thesis the deferred maintenance records of seven DDG's were examined during the period FY 1999 to 2000 to determine if trends existed in the types of work being deferred. First, the deferred data were grouped into categories using the System Work List Item Number from data collected in the Maintenance Support Tool. Second, compilations of the grouped data (estimated total mandays and total costs) were divided into FYs 99 and 00. Third, trends were established and then compared to FY 99 and 00 to determine consistencies. The results showed that over 60% of deferred jobs and estimated total mandays occurred in the categories of hull structure (decks), auxiliary equipment (air conditioning) and outfit/furnishing (habitability). Nearly 50% of the estimated total costs, however, occurred within the hull structure and ship support services (shipyard services) categories. Trends were also established to determine the Port Engineer's accuracy in job estimates. In FY 00, estimated deferred data were compared to FY 00 actual deferred data. The results concluded that the Port Engineers overestimated total mandays by 9% and total costs by 10%. A determination of the effectiveness of the Continuous Maintenance Program could not be reached due to the classification required to make the analysis.