Maintenance program which is concise and inexpensive to operate adapts to almost any system that has a FORTRAN compiler. Program operates on a stored data base with an output consisting of scheduling information and various management reports

Cea, E. J.

Grieger, T. H.

English

NASA Technical Reports Server

December 1971	 Brief 71-10500 
NASA TECH BRIEF 
Goddard 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 subscription 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. 
Automated Preventive Maintenance Program 
The problem: 
To devise an inexpensive preventive maintenance 
computer program which is written in a non-busi-
ness-oriented language and can be adapted to other 
tasks. 
The solution: 
A preventive maintenance program which is con-
cise and inexpensive to operate, and can be adapted 
to almost any system that has a FORTRAN IV 
compiler. 
How it's done: 
The program operates on a stored data base. 
Output consists of scheduling information and vari-
ous management reports. 
A data file of information relating to the preven-
tive maintenance (p.m.) function is stored on mag-
netic tape. Each file record contains the following 
fields: task number, skill code, frequency of p.m. in 
meter hours, frequency of p.m. in calendar days, 
cost of each p.m. carried out, task description, 
equipment number, instruction number, number 
of times p.m. has been carried out, update code, 
present meter reading in hours, number of present 
calendar days, man hours for each p.m., life number 
of person carrying out p.m., department number 
associated with p.m., meter reading in hours of last 
p.m., and number of day of last p.m. 
One program option is the data file update capa-
bility. Records may be deleted, changed, or added, 
and information describing additional performance 
of p.m. activities may be added to existing records.
A second program option is the retrieval and dis-
play of those tasks which are due for p.m. The pro-
gram prints a separate page for each task which has 
been retrieved. 
The program can also produce a future elapsed-
time task list. The user provides as input the limits 
of the time period which he wants scanned. Proc-
essing then consists of retrieving those p.m. items 
in the data file which will be due during this period, 
including the number of times the items should be 
performed and the man-hours needed by each task. 
A fourth option available is an Equipment Item 
Maintenance History. Input consists of the desired 
item numbers. The program scans each record, look-
ing for those p.m. items whose equipment item 
numbers match those supplied. For each match, 
output consists of task number, task description, 
manhours, life number, meter hours at last p.m. 
performance, and number of day at last p.m. per-
formance. 
A Facilities Maintenance Costs printout represents 
a fifth processing capability. For each separate 
facility stored in the data file, a three-line summary 
is printed. This consists of the facility number, the 
total p.m. costs to date, and the total man-hours 
expended by the associated p.m. activities. 
A sixth and seventh option concern the printout 
of information in the data file. If desired, just the 
fixed information may be listed. Alternately, the 
entire contents, including all lines of variable infor-
mation, can be dumped.
(continued overleu() 
This document was prepared under the sponsorship of the National 
Aeronautics and Space Administration. Neither the United States 
Government nor any person acting on behalf of the United States
Government assumes any liability resulting from the use of the 
information contained in this document, or warrants that such use 
will be free from privately owned rights.
https://ntrs.nasa.gov/search.jsp?R=19710000497 2020-03-17T02:26:27+00:00Z
Notes: 
1. This program was written in FORTRAN IV for 
use on the IBM-360 computer. 
2. Requests for further information may be directed 
to:
COSMIC 
112 Barrow Hall 
University of Georgia 
Athens, Georgia 30601 
Reference: B71-10500 
Patent status: 
No patent action is contemplated by NASA. 
Source: E.J. Cea and T.H. Grieger of 
Sperry Rand Corporation 
under contract to
Goddard Space Flight Center
(G SC- 1 1408) 
Brief 71-10500	 Category 09


Automated preventive maintenance program

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