Integrated and Modular Systems for Commercial ... - Nonstop Systems

Standardization issues
• “generic”, can be used across variety of functions
• economies of scale (production volume, recurring cost)
• fewer unique designs and parts, re-use
• fewer part numbers:
– smaller number of spares:
PL = exp(-N) .Σ
1/k N
m!
– spares acquisition (may be higher) & holding cost
– logistics, supportability
– documentation, configuration management
– training, test equipment
• “overkill” penalty for being “universal” (must support
highest system req’s → higher design assurance level)
kit
- standardization ~ commonality -
NS
m=0
m
67
©1995-1997 F.M.G. Dörenberg