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Maintenance engineering analysis |
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|  MIL-G-24477(SHIPS)
The FMEA shall include, but not be limited to, the following:
List of critical assemblies, subassemblies or parts which, by their failure
(a)
rates, contribute the most to the unreliability of the generator set.
(b) Failure modes of the assemblies, subassemblies, or parts and corresponding
probability of failure.
Effect of each failure on the equipment and the interfacing systems, and the
(c)
effect of interfaces on the equipment.
(d) Possible means of reducing probability of critical failure modes.
(e) Details to assist in preparation of the trouble-shooting section of the
technical manual.
3.1.2.9 Maintenance engineering analysis. The contractor shall conduct before the
design tests a maintenance engineering analysls (MEA). The MEA shall be conducted for each
functional system, equipment, unit, assembly, or subassembly which requires maintenance, and
the continued operation of which is essential to the successful completion of a mission
itself.
The MEA shall include as a minimum the MEA revision data (block 16) and the MEA
summary (block 17) of worksheet 1, and fully completed worksheets IV and V of MIL-M-24365.
It shall reflect the characteristics and design of the equipment delivered as production
units.
3.1.2.10 Reliability and maintainability (R and M) data collection and reports. The
contractor shall conduct an Rand M data collection , analysis, and corrective action program
throughout all phases of testing. When a failure is experienced or discovered during- factory
examination and tests a failure analysis as defined in MIL-STD-721 shall be provided. The
program and related reports shall contain as a minimum the following elements:
R and M prediction reports.
(a)
FMEA report.
(b)
MEA report.
(c)
A documentation of all failures, corrective maintenance actions, and technical
(d)
problems relating to reliability and maintainability.
An analysis of each failure and technical problem.
(e)
The determination, implementation, verification, of the results of corrective
(f)
action.
Maintainability demonstration test report.
(g)
Reliability demonstration test report.
(h)
3.1.2.11 Design for maintenance.
3.1.2.11.1 The design shall provide accessibility to all parts which require inspection,
preventative maintenance, or replacement in service with the minimum practicable need for
disconnection or removal of another part or assembly. Access panels, covers, peep holes, etc.
shall be employed to the fullest extent feasible and compatible with the intended inspection
or maintenance action. The envelope of the minimum required space around the generator set
which is needed for ease of maintenance shall be shown on the generator set installation
drawing.
3.1.2.11.2 All parts, including repair parts furnished under the same contract or
order or manufactured to the same drawings shall be interchangeable without the necessity
for further machining, selective assembly or hand fitting of any kind to the fullest extent
feasible.
3.1.3 System Safety program. The contractor shall develop and maintain an effective
system safety program that is planned and integrated into all phases of design, production,
and testing of the equipment. The system safety program shall provide a disciplined approach
to identify hazards and prescribe corrective actions in a timely cost effective manner. The
system safety program tasks shall be specified in a formal plan (System Safety Program Plan).
The plan shall include requirements to be imposed on each subcontractor to assure compatibility
with the system safety program for the equipment. MIL-STD-882 shall be used as guidance for
preparing the System Safety Program Plan (SSPP).
3.1.3.1 Safety analysis. Safety analyses shall be performed to identify hazardous
condition for the purpose of their elimination or control. Safety analyses shall examine
the equipment, subsystem, components and their interrelationship including logistic support,
training, maintenance and operational environments.
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