Apollo Lunar Surface Experiments Package long term operational planning

This document provides engineering information relative to the long term operating characteristics of the five ALSEP systems presently active on the lunar surface. The information includes a current summary of the operational status of each of the systems and an assessment of the predicted life from both hardware reliability calculations and RTG power availability. Additionally, recommendations are given for managing each system in terms of power utilization for maximum life. Finally, some suggestions are provided for obtaining useful engineering data at the end of life of the respective systems.prepared by D. Perkins, W. Tosh ; approved by R. Wallace.Introduction -- Operational summary -- Operating life -- Recommendation