Report on Def Stan 00-42 Pt 4 Testability ake consultants - - PowerPoint PPT Presentation

ake consultants

Report on Def Stan 00-42 Pt 4 Testability

November 2012

ake consultants

Objective 1

• Review 00-42 from perspective of an MOD

IPT contracting for Testability.

 Generally inadequate

• Liaise with MOD R&M for input or

requirements.

 Lead to understanding of MOD awareness levels  Resulted in the document structure

• Compare with IEC 60706-5 Standard

 Generally 00-42 has good descriptions but is

inadequate: Little substance, Non-prescriptive and Recommends seeking guidance from subject experts

November 2012

ake consultants

Objective 2

• Determine if IEC is alternative to Def Stan

 60706: Better Definitions & Terminology  60706: Good descriptions & examples – care need time

to understand; not the only way

 60706: lengthy and expensive  Conclusion: Rewrite; amalgamate material

• Identify other sources of Testability

information

 Most appropriate would be MHBK 2165  Too detailed for objective  Not maintained since 1993

November 2012

ake consultants

Objective 3

• Consider whether ESS introduces testability

requirements

 Looked at HALT/HASS/6-Sigma  Content not included - this committee should consider

whether testing techniques or testability

• Consider impact of testability on BIT

 Material included to address impact on design, reliability,

test coverage, diagnostics and retention of results

November 2012

ake consultants

Objective 4

• Deliverable evidence of testability: data

retention and future use

 Material added to address what should be specified in

procurement

 Retention of data more appropriate to other

procurement guides

• Validation of testability requirements

 Clauses provided to address testability predictions,

performance verification, implications for under- performance

• Produce draft revision for review

November 2012

ake consultants

Overview – Overall Document

• New Introduction and Scope
• Reviewed References; Rationalised

Definitions and Abbreviations from 00-42 and 60706

• Restructure the document to facilitate

understanding and procurement process

• Incorporate material from 00-42, 60706 and
• ther sources

November 2012

ake consultants

Overview – Assist Understanding

• Bring out key points:

 Testability Concepts (What is Testability?)  Testability Objectives (Why it is carried out?)  Testability and the Product Life Cycle (When should it be

carried out?)

November 2012

ake consultants

Overview – Assist Procurement

 Contracting for Testability: Specification (How should it

be specified?)

 Contracting for Testability: Testability Criteria (What

should be specified?)

 Implementing Testability (What does it mean in

practice?)

 Testability Verification (How should it be assessed?)  Testability Risks (What to look out for)

November 2012

ake consultants

Summary of Final Document 1

• Result:

 added new aspects  more precise terminology  clearer purpose and structure  more prescriptive guidance  complete and standalone

November 2012

ake consultants

Summary of Final Document 2

• Issues:

 Quite lengthy and wordy – standard + user

guide/Annex?

 Repetitive due to ‘pick up as required’ structure  Sufficiently prescriptive?  Provide formulae – e.g. FDC, FDP?  Need to add section on COTS