BS 6548-5:1995 Maintainability of equipment - Part 5. Guide to diagnostic testing
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This International Standard is being issued as
Section 4 of the guide on maintainability of
equipment. Its purpose is to:
— provide guidance for the early consideration of
testability aspects in design and development;
NOTE The design of an item should facilitate and support
diagnostic testing, and this can be achieved most efficiently by
considering testability aspects as early as possible in the
design process, usually in conjunction with a fault mode and
effects analysis (FMEA). If left till later project phases, when
the design has been finalized, only very limited testability
features may be added. These will be less effective and will
involve disproportionately high costs.
— assist in determining effective test procedures
as an integral part of operation and maintenance.
NOTE The operational and maintenance concept will
depend to a certain extent on the design philosophy, and
therefore to ensure that full use can be made of the diagnostic
testing possibilities, test requirements should be included in
the operational and maintenance policy and be developed as
an integral part of the design process.
This section of IEC 706 is applicable to all categories
of equipment in their concept and principles,
although many of the techniques described are
clearly more applicable to the electrical and
electronic fields, as it is in those areas where there
is the greatest opportunity for them to be applied.
For mechanical equipment, the traditional
diagnostic techniques can still be used, but here too
the advances being made in electronic measuring
and monitoring devices mean that much improved
diagnostic testing facilities can now be applied to
mechanical components and complex systems. This
makes it particularly important that the structured
approach given for the provision of diagnostic
testing facilities is used for a wide range of tasks.
Reference is made in this section to condition
monitoring. This is a facility which closely relates to
the concepts covered in this guide on diagnostic
testing, and cannot, and should not, be dissociated
from it. However, it is not the intention that full
coverage of condition monitoring should be part of
this standard.
