NZQA Expiring unit standard
20602 version 3
Page 1 of 3
Title
Design a pneumatic power air distribution system
Level
4
Credits
10
Purpose
People credited with this unit standard are able to prepare to
design, undertake design of, and complete documentation for,
a pneumatic power air distribution system.
Classification
Mechanical Engineering > Fluid Power - Pneumatics
Available grade
Achieved
Entry information
Critical health and
safety prerequisites
Unit 20600, Design a basic pneumatic power system under
supervision, or demonstrate equivalent knowledge and skills.
Explanatory notes
1
Air distribution system, in the context of this unit standard, refers to a complex
arrangement of components to carry the flow of compressed air from the compressor
to points of use (compressed air consumers), and assumes the existence of
functional air production equipment that has the capability of meeting consumption
demands.
2
Components relevant to this unit must include the following:
a Main air distribution line - dead end or ring main.
b Secondary lines.
c In-system fittings which may include but are not limited to wheel valve, instant air
coupling, moisture separator, strainer, lubricator, bends, T-joints, sliding joints,
and plug cocks.
d Filters - main line, secondary branch lines, micro filters, sub-micro filters.
3
Assessment across all outcomes requires the design to accommodate at least seven
air consumers using equipment that may include but is not limited to - air hoist, drills,
grinders, polishers, sheet metal shears and nibblers, wrenches.
4
The design and specification of the pneumatic fluid power system is the outcome of
this unit standard. The actual construction of the system is not a requirement of
assessment.
5
Symbols must conform to ISO 1219, Fluid power systems and components - Graphic
symbols and circuit diagrams - Part 1: Graphic symbols (1991), and Part 2: Circuit
diagrams (1995).
Competenz
SSB Code 8104
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
20602 version 3
Page 2 of 3
Outcomes and evidence requirements
Outcome 1
Prepare to design a pneumatic power air distribution system.
Evidence requirements
1.1
Design specifications and operational requirements are understood and
confirmed with customer.
Range
may include but is not limited to - number of potential air
consumers, types of air consumers (tools), system layout,
construction requirements.
1.2
Design safety and regulatory requirements are identified and confirmed with
customer.
1.3
Personnel associated with end use and complementary services are identified
and consulted.
Range
may include but is not limited to - component and consumable
materials suppliers, pneumatic specialists, technical writers, staff
training personnel.
Outcome 2
Undertake design of a pneumatic power air distribution system.
Evidence requirements
2.1
Calculations are made to meet operational requirements of system and
determine sizing of components to meet design specification.
Range
2.2
may include but is not limited to - pressure drop through system,
maximum system pressure, flow rate in free air, pipe length and
diameter calculations, pipe drop.
Main and secondary pipe material is compared, and selection is made on the
basis of system efficiency, cost, and customer requirements.
Range
pipe material may include but is not limited to - galvanised gas
pipe, stainless steel, copper.
2.3
In-system fittings are selected according to design brief.
2.4
Design meets specification, operational capabilities, and regulatory
requirements.
Competenz
SSB Code 8104
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
20602 version 3
Page 3 of 3
Outcome 3
Complete documentation for a pneumatic power air distribution system.
Evidence requirements
3.1
Terminology and symbols are selected to match specification.
3.2
Documentation meets circuit specifications and operational requirements.
Range
to include - components list and specifications, symbols to ISO
1219;
may include but is not limited to - description of operation and
safety information, maintenance schedule, consumables
information, maintenance and fault-finding instructions including
leak detection methods, costing of system (bill of materials).
This unit standard is expiring. Assessment against the standard must take place by
the last date for assessment set out below.
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
25 May 2004
31 December 2015
Review
2
18 March 2011
31 December 2017
Rollover
3
15 October 2015
31 December 2017
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, 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 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.
Consent requirements and an outline of the moderation system that applies to this
standard are outlined in the 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.
Competenz
SSB Code 8104
 New Zealand Qualifications Authority 2016