NZQA registered unit standard
22904 version 2
Page 1 of 4
Title
Demonstrate knowledge of modern engineering plant maintenance
practice
Level
4
Credits
Purpose
5
This unit standard is for use in training of mechanical
engineering trades employed in the maintenance of
manufacturing plants, and covers strategies and techniques
used in the maintenance of modern manufacturing plants.
People credited with this unit standard are able to: demonstrate
knowledge of plant maintenance strategies and activities, and
diagnostics in mechanical plant; and perform a Root Cause
Analysis of a mechanical failure.
Classification
Mechanical Engineering > Maintenance and Diagnostics in
Mechanical Engineering
Available grade
Achieved
Explanatory notes
Definitions
Reliability Centred Maintenance – a planned maintenance strategy that is needs-based,
providing the best mix of plant reliability and cost effectiveness.
Root Cause Analysis – a systematic approach to finding the root cause of failure, which, if
removed, will prevent recurrence.
Total Productive Maintenance – a company-wide philosophy of maintenance that involves
the entire company and focuses on continuous improvement.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of plant maintenance strategies.
Evidence requirements
1.1
Different approaches to plant maintenance and their impact in a manufacturing
environment are explained with practical examples.
Range
Competenz
SSB Code 101571
approaches – reactive, planned, preventative, predictive,
proactive.
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
22904 version 2
Page 2 of 4
1.2
The concepts of Reliability Centred Maintenance and Total Productive
Maintenance are outlined with reference to impact on plant and process
reliability.
1.3
Key performance indicators for plant reliability are identified and their meanings
explained.
Range
evidence of at least three key performance indicators is required.
Outcome 2
Demonstrate knowledge of plant maintenance activities.
Evidence requirements
2.1
Typical maintenance planning, scheduling, and shutdown activities are outlined
for a modern manufacturing plant, with reference to relevant management
systems.
2.2
Machine maintenance activities are outlined.
Range
2.3
cleaning, servicing, adjusting, monitoring, fault finding, repair.
Condition monitoring techniques are described with reference to purpose,
fundamental instrument principle, and application in a maintenance programme.
Range
techniques – vibration analysis, ultrasonic detection, oil analysis,
infrared thermal imaging.
Outcome 3
Demonstrate knowledge of diagnostics in mechanical plant.
Evidence requirements
3.1
The principles of fault diagnosis are explained.
Range
3.2
symptoms, measurement, observation of intermediate points, use
of manuals and fault finding data, logical analysis, fault location.
Common problems in mechanical plant are described with reference to
symptoms, cause, and remedy.
Range
Competenz
SSB Code 101571
evidence of five different problems is required.
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
22904 version 2
Page 3 of 4
Outcome 4
Perform a Root Cause Analysis of a mechanical failure.
Range
evidence of any one method of performing and presenting the root cause
analysis may be used.
Evidence requirements
4.1
All data relating to the failure are investigated and listed.
4.2
A causal factor chart or tree is prepared, presenting all events and conditions
leading to the failure.
4.3
Root causes are deduced using a decision diagram.
4.4
Recommendations to address the root causes are developed to prevent similar
failures.
4.5
Analysis is documented in tabular format, showing root causes and
recommendations as a minimum.
Planned review date
31 December 2016
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
20 June 2006
31 December 2014
Review
2
15 April 2011
N/A
Consent and Moderation Requirements (CMR) reference
0013
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
22904 version 2
Page 4 of 4
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMRs). The
CMR 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 qualifications@competenz.org.nz if you wish to suggest
changes to the content of this unit standard.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016