21777 version 2
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Apply knowledge of quality and reliability for mechanical engineering
production
Level
6
Credits
15
Purpose
People credited with this unit standard are able to: describe the principles of
quality management and reliability engineering for mechanical engineering
production; apply knowledge of mechanical engineering production quality;
apply knowledge of mechanical engineering reliability in production and
manufactured products; and demonstrate knowledge of a quality
management system as applied to mechanical engineering production.
Subfield
Mechanical Engineering
Domain
Applied Principles of Mechanical Engineering
Status
Registered
Status date
27 October 2005
Date version published
19 March 2010
Planned review date
31 December 2015
Entry information
Recommended: Unit 21775, Demonstrate knowledge of
mathematical principles for mechanical engineering, or
demonstrate equivalent knowledge and skills.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
Competenz
Accreditation and Moderation Action Plan (AMAP) reference
0013
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
All activities must comply with: any policies, procedures, and requirements of the
organisations involved; the ethical codes and standards of relevant professional bodies;
and any relevant legislative and/or regulatory requirements which may include but are not
limited to the Health and Safety in Employment Act 1992, and its subsequent and
delegated legislation.
 New Zealand Qualifications Authority 2016
21777 version 2
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Elements and performance criteria
Element 1
Describe the principles of quality management and reliability engineering for mechanical
engineering production.
Performance criteria
1.1
Principles of quality management are described.
Range
1.2
includes but is not limited to – philosophy, cost, variables and
attributes, process capability.
Principles of reliability engineering are described.
Range
includes but is not limited to – failure rates, hazard rates, reliability
systems.
Element 2
Apply knowledge of mechanical engineering production quality.
Performance criteria
2.1
Principles of quality methods are applied.
Range
2.2
Control charts used for the measurement of quality are applied.
Range
2.3
cost of quality, measurement and data collection, capability,
variables and attributes.
includes but is not limited to – X and R, cusum, C, P, N, NP, X,
and σ charts.
Quality measurement techniques are applied.
Range
process control methods consistent with X and R, cusum, C, and
P charts.
2.4
Automated testing systems are described in terms of their application.
2.5
Quality measurement and improvement methods are analysed.
Range
2.6
team methods, quality circles, Ishikawa.
Statistical methods and sampling systems are applied.
Range
statistical methods – Taguchi, probability distribution, Poisson
distribution;
sampling systems – single, multiple, 105D.
 New Zealand Qualifications Authority 2016
21777 version 2
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Element 3
Apply knowledge of mechanical engineering reliability in production and manufactured
products.
Performance criteria
3.1
Principles of reliability in series, parallel, and series-parallel systems are
applied.
Range
3.2
Hazard rate functions and failure rates are analysed.
Range
3.3
may include but is not limited to – Weibull failure rate and
distribution, shape function, ‘bath tub’ curves.
Reliability and availability in manufactured products are analysed.
Range
3.4
availability and unavailability, active and standby redundancy,
common mode failure, reliability, breakdown, preventative
maintenance.
availability and unavailability, MTTF, MTBF, MDT.
Principles of periodic and continuous condition monitoring are described and
applied to individual machine elements.
Range
includes but is not limited to – bearings, gears.
Element 4
Demonstrate knowledge of a quality management system as applied to mechanical
engineering production.
Performance criteria
4.1
Requirements for working within a recognised standard are analysed.
Range
one of more of the ISO 9000 series, or one or more of the ISO
14000 series.
Please note
Providers must be accredited by NZQA, or an inter-institutional body with delegated
authority for quality assurance, before they can report credits from assessment against
unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be accredited by NZQA before they can register
credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
 New Zealand Qualifications Authority 2016
21777 version 2
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Accreditation requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP also includes useful information about special requirements for organisations
wishing to develop education and training programmes, such as minimum qualifications for
tutors and assessors, and special resource requirements.
Comments on this unit standard
Please contact Competenz info@competenz.org.nz if you wish to suggest changes to the
content of this unit standard.
 New Zealand Qualifications Authority 2016