NZQA registered standard
28116 version 1
Page 1 of 4
Title
Operate a mechanical stress grading machine to grade timber
Level
3
Credits
10
Purpose
People credited with this unit standard are able to: demonstrate
knowledge of the operation and operating principles of
mechanical stress grader (MSG) machines; prepare to operate
an MSG machine; and operate an MSG machine.
Classification
Solid Wood Manufacturing > Timber Grading
Available grade
Achieved
Entry information
Recommended skills
and knowledge
Unit 20754, Demonstrate knowledge of mechanical stress
grading of timber; or demonstrate equivalent knowledge and
skills.
Explanatory notes
1
The following apply to the performance of all outcomes of this unit standard:
a All work practices must meet recognised codes of practice and documented
worksite health and safety and environmental procedures (where these exceed
code) for personal, product, and worksite health and safety, and must meet the
obligations required under current legislation, including the Health and Safety in
Employment Act 1992, the Resource Management Act 1991, and their
subsequent amendments.
b All work practices must meet documented worksite operating procedures. This
includes the recording (by electronic or non-electronic means) of activities,
events, and decisions.
c All evidence of communications gathered in relation to this unit standard must be
in accordance with worksite procedures for content, recipient, timing, and method.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered standard
28116 version 1
Page 2 of 4
2
References
AS/NZS 1748.1:2011 Timber - Solid - Stress-graded for structural purposes - General
requirements.
AS/NZS 1748.2:2011 Timber - Solid - Stress-graded for structural purposes Qualification of grading method.
NZS 3622: 2004 Verification of timber properties.
AS/NZS 4490:2011 Timber - Solid - Stress-graded for structural purposes Verification of properties.
AS/NZS 4063.1:2010 Characterization of structural timber - Test methods.
AS/NZS 4063.2:2010 Characterization of structural timber - Determination of
characteristic values.
3
Definition
Worksite policies and procedures refer to documented policies and to documented or
other directions provided to staff. These include, but are not limited to, ways of
managing health and safety, environmental considerations, quality, and production,
and must conform to legislation. Examples include standard operating procedures,
company health and safety plans, on-site briefings, and supervisor’s instructions.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of the operation and operating principles of mechanical stress
grader (MSG) machines.
Evidence requirements
1.1
Purpose of the MSG machine and the operation of a grading machine are
described in accordance with worksite policies and procedures.
1.2
Components of the MSG machine are described in accordance with worksite
policies and procedures.
Range
components may include but are not limited to – in-feed and outfeed rollers, load cylinder(s) and associated air pressure system,
transducers, photocells, acoustic hammer, grade branding or
spraying system, computer and memory system.
1.3
Four product downgrading characteristics that may not be detected by the MSG
machine are listed.
1.4
The identification grades and colours for all MSG grades that are detailed by
NZS 3622 are identified.
Range
1.5
species – Douglas Fir, Radiata Pine;
market – export, domestic.
Roles and responsibilities of the MSG machine operator are described in
accordance with worksite policies and procedures.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered standard
28116 version 1
Page 3 of 4
Outcome 2
Prepare to operate an MSG machine.
Evidence requirements
2.1
Start-up checks, cleaning, and adjustment of components are completed in
accordance with worksite policies and procedures.
2.2
The operating schedule is identified and described in accordance with worksite
policies and procedures.
Outcome 3
Operate an MSG machine.
Evidence requirements
3.1
Hazards associated with operating an MSG machine are identified and actions
to be taken to isolate, minimise or eliminate the hazards are described in
accordance with worksite policies and procedures.
Range
3.2
hazards may include but are not limited to – moving equipment,
mobile plant, noise, loose clothing.
Safe work practices associated with operating an MSG machine are used in
accordance with worksite policies and procedures and legislative requirements.
Range
safety practices may include but are not limited to – isolation
procedures, lock-outs, emergency stops, machine guarding,
wearing of appropriate safety equipment.
3.3
Machine is operated in a production environment in accordance with the
manufacturer's specifications.
3.4
Machine parameters are adjusted to meet the requirements of the operating
schedule in accordance with worksite policies and procedures.
3.5
Samples are removed for verification checks and data relating to the samples
are recorded in accordance with manufacturers’ recommendations.
3.6
Housekeeping procedures are carried out in accordance with the
manufacturer’s and legislative requirements and worksite policies and
procedures.
Replacement information
Competenz
SSB Code 101571
This unit standard and unit standard 28117 replaced unit
standard 141.
 New Zealand Qualifications Authority 2016
NZQA registered standard
Planned review date
28116 version 1
Page 4 of 4
31 December 2018
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
20 March 2014
N/A
Consent and Moderation Requirements (CMR) reference
0173
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.
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 (CMR). 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