NZQA Expiring unit standard
3779 version 7
Page 1 of 4
Title
Control machine directional up and down warp over extended
periods during fibreboard production
Level
4
Credits
10
Purpose
People credited with this unit standard are able to produce
board with 2% or less machine directional (MD) warp over
extended periods, and manage excessive MD warp.
Classification
Fibreboard Packaging > Fibreboard Manufacture
Available grade
Achieved
Entry information
Critical health and
safety prerequisites
Unit 340, Demonstrate knowledge of safe working practices in
the printing and graphic pre-press industries, or demonstrate
equivalent knowledge and skills.
Recommended skills
and knowledge
Unit 3776, Produce fault free fibreboard on a double backer
and platen section during long production runs, or demonstrate
equivalent knowledge and skills.
Explanatory notes
1
All workplace practices must meet any applicable and recognised codes of practice,
and documented workplace health, safety, and environmental procedures for
personal, product, workplace health, safety, and environmental matters, and the
obligations required under current law including the Health and Safety in Employment
Act 1992, Hazardous Substances and New Organisms Act 1996, Resource
Management Act 1991, Privacy Act 1993 and their subsequent amendments.
2
Workplace practices refer to the documented procedures for the equipment and/or
workplace.
3
‘Machine Directional’ is abbreviated to ‘MD’ where it occurs in outcomes and
evidence requirements.
4
The process for defining and calculating warp percentages for the purposes of
assessment is as follows: when a warped board is laid on a level surface so as to
form a shallow arch, the maximum vertical deviation from the horizontal is expressed
as a percentage of the board dimension that forms the arch. Warp is assessed at
take-off, and thus excludes ‘post-warp’.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
3779 version 7
Page 2 of 4
5
‘Extended periods’ are defined within this unit standard as periods up to one hour's
duration, and including several paper changes per period.
6
‘Actions available’ where listed within this unit standard can be taken in any
combination or sequence which is in accordance with workplace practices and
equipment specifications and configuration.
7
Where referred to, ‘excess misalignment’ is defined in double faced board as: the
edge of the single face web being aligned more than 5mm from the edge of the
bottom liner at operator side; and, in twin cushion, where all three edges (of both
single face webs and the bottom liner) fail to align within a 5mm spread at operator
side.
Outcomes and evidence requirements
Outcome 1
Produce board with 2% or less MD warp over extended periods.
Evidence requirements
1.1
Awareness of forthcoming paper changes is demonstrated.
Range
1.2
checking production documentation, communication with other
corrugator crew members, identification of possible equipment
adjustments.
Proactive corrective actions available in the workplace for the double backer
and platen section are described and/or taken in anticipation of paper changes.
Range
changes in paper grade, type, width, and any combination;
tension control actions – cleaning of hot plates, adjustments to any
or all of double backer liner preheater brake, bridge single face
preheater brake, bridge brake, double backer liner brake, paper
lubrication systems, paper guides, bridge single face vacuum;
double backer liner preheater wraps, hot plate temperatures, main
belt pressures.
1.3
The effects of the corrective actions available in 1.2 are explained in terms of
workplace practices and equipment configurations.
1.4
Procedures to be followed where all double backer and platen section actions
are unsuccessful are explained in terms of workplace practices.
Outcome 2
Manage excessive MD warp.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
3779 version 7
Page 3 of 4
Evidence requirements
2.1
MD warp warning is immediately responded to in accordance with workplace
practices.
2.2
MD warp is reduced within one minute of receipt of a first MD warp warning.
2.3
MD Warp is reduced to 2% or less within one minute of any second MD warp
warning.
2.4
Board is produced free of faults to meet the requirements of the job.
faults are defined as – excess misalignment, delamination of any
type, flute damage or deformation of any type, board damage of
any type.
Range
2.5
Where all available actions at the double backer and platen section have failed
to reduce MD warp to 2% or less within one minute of any second MD warp
warning, joint corrective action with other corrugator crew is taken in
accordance with workplace practices.
Range
immediate verbal advice to other crew, clear verbal definition of
the problem, clear verbal definition of the joint action agreed.
Replacement information
This unit standard, unit standard 3786, and unit standard
21621 have been replaced by unit standard 27811.
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
28 April 1995
31 December 2015
Revision
2
19 December 1997
31 December 2015
Revision
3
27 March 2001
31 December 2015
Review
4
27 April 2005
31 December 2015
Rollover and
Revision
5
12 December 2008
Review
6
20 September 2012
31 December 2019
Rollover
7
10 December 2015
31 December 2019
31 December 2015
Consent and Moderation Requirements (CMR) reference
0005
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
3779 version 7
Page 4 of 4
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.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016