(1) Reduced cost of production systems
Production costs for standard power supplies are reduced because of high
volume use and volume discounts, multiple source competition, reduced recurring
hardware costs due to common electrical and mechanical components and a
relatively large procurement base. Lower costs are also achieved through
high-production-volume learning curves.
(2) Reduced time
Availability of standard power supplies is promoted through development of
multiple sources and high volume use.
(1) Improved system reliability
This is achieved by a concentration of scarce resources on a small number of
power supplies as opposed to diluted resources dispersed across several unique
designs. It is enhanced by increased applicability of the standard supplies in
(2) Increased savings
By reducing the number of different supplies between systems, savings occur
in maintenance manuals, technician training and corrective maintenance (due to
(3) Reduced support costs
Use of interchangeable power supplies reduces the number of different spare
components, the supply administration costs, the cost of procuring spares and
(4) Program visibility
Problems with standard power supplies are more visible and thus receive
adequate attention and resolution.
Benefits of standardization can be shown in the Standard Electronic Modules
(SEM) Program. The SEM program has been highly successful in meeting its
objectives of improving reliability and reducing cost. Of the 16,000 total
modules in one Navy system, 21 SEM types (out of 138 SEM types) accounted for
over 12,000 modules. Most of the module types were common with another system.
The result of such inter-and intra-system commonality saved a combined total of
$8 million through economies in the areas of module development, volume
discounts and spares support.
In addition, demonstrated reliabilities of these two systems have been 4 to 8
times better than predicted. Another Navy system which has been deployed long
enough to have statistical reliability significance is experiencing 0.04
failures per million hours, compared to the original prediction of 1.9 failures
per million hours.
Standardization can offset any negative factors. Resistance to
standardization comes about basically because there is a lack of understanding
of its principles and of the program to which it can be applied, or simply
because planning for it is too little and too late.
Standardization is the single most effective solution to the problems of
reliability, high costs and logistic support of power supplies. Such an effort
not only will aid in the initial acquisition of equipment but also will improve
the long-term availability, operability and supportability of the