Plans are available for age-sensitive hardware management. Control plan identifies shelf life or age control requirements for materials considered age sensitive, use sensitive, or time service or shelf life controlled items, and describes methods of arriving at age controls through adherence to detailed specifications

Eaglen, R. L.

English

NASA Technical Reports Server

June 1971	 Brief 71-10196 
S	 NASA TECH BRIEF 
Marshall Space Flight Center 
NASA Tech Briefs announce new technology derived from the U.S. space program. They are issued to encourage 
commercial application. Tech Briefs are available on a aubscription basis from the National Technical Information 
Service, Springfield, Virginia 22151. Requests for individual copies or questions relating to the. Tech Brief program may 
be directed to the Technology Utilization Office, NASA, Code KT, Washington, D.C. 20546. 
Limited Life Item Management 
Control plans, procedures and complete specifica-
tions have been developed for the management of 
age-sensitive hardware. Industrial and consumer 
items such as automobiles, household appliances, 
"Office equipment, machine tools, and farm equip-
ment, all contain materials considered to have a 
limited life. Materials used in gaskets, seals, lubri-
cants, hose assemblies, batteries, adhesives and 
fabrics are among those that, if not replaced at 
scheduled intervals, deteriorate and create safety 
• hazards or cause system failure. A method of iden-
tifying limited life materials and related components, 
assigning responsibility, and scheduling replace-
ment or service is necessary for establishing spare 
parts stock levels, maintenance schedules, material 
storage methods, and product warranty schedules. 
The methods and specifications now available can 
be used as guidelines in controlling age-sensitive 
materials by defining the necessary tasks and 
delegating the responsibility for their accomplish-
ment. The control plan identifies shelf life or 
age-control requirements for materials which are con-
sidered to be age sensitive, use sensitive, or time 
service or shelf life controlled items, and describes
the methods of arriving at the age controls through 
adherence to detailed specifications. The plan 
presents methods for determining the processes 
through which the useful life of materials might be 
extended by constantly reviewing the technical 
considerations underlying the present age limita-
tions, and provides a procedural outline for the 
timely replacement of over-aged materials. 
Note: 
Requests for further information may be directed 
to:
Technology Utilization Officer 
Code A&TS-TI! 
Marshall Space Flight Center 
Huntsville, Alabama 35812 
Reference: TSP71-10196 
Patent status: 
No patent action is contemplated by NASA. 
Source: R. L. Eaglen of
North American Rockwell Corp.
under contract to
Marshall Space Flight Center 
(MFS-24020) 
Category 04,06 
This documefct was prepared under the sponsorship of the National	 Government assumes any liability resulting from the use of the 
Aeronautics and Space Administration. Neither the United States 	 information contained in this document, or warrants that such use 
Government nor any person acting on behalf of the United States 	 will be free from privately owned rights.
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Limited life item management

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