While individual program managers have great leeway on implementing ESS, the overall direction is clear. Top management's commitment and attention is the key element in a successful ESS program. The following summarizes the ESS guidance:
Define contractual requirements.
Identify a general approach to satisfy these requirements.
Perform a cost analysis considering the following:
- Assembly level at which to apply ESS
- Level of automation versus manual labor
- Specific rates of thermal change versus capital investment
- Adequacy of available in-house random vibration equipment versus cost of off-site screening or the purchase of new equipment
- Cost considerations of active power-on versus passive power-on screening
Consider sampling for the ESS screen based on screening data collected, but only with customer concurrence
Coordinate the ESS program with other activities relating to quality and reliability.