NZQA Expiring unit standard
154 version 6
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Title
Fix copper chrome arsenic preservatives in wood using heat
assistance
Level
3
Credits
5
Purpose
People credited with this unit standard are able to: demonstrate
knowledge of the principles and purpose of the copper chrome
arsenic (CCA) fixation process; demonstrate knowledge of the
operation of CCA fixation plants; demonstrate knowledge of
fixation schedules and documentation requirements; identify,
explain and apply safety and security requirements for CCA
fixation plants; assess the suitability of wood for the CCA
fixation process; operate the CCA fixation plant and monitor
charge and plant performance; assess and confirm CCA
fixation effectiveness, complete documentation, and manage
non-conforming product; and apply maintenance requirements
for the on-site CCA fixation plant.
Classification
Solid Wood Manufacturing > Timber Drying and Treatment
Available grade
Achieved
Entry information
Recommended skills
and knowledge
Unit 159, Demonstrate knowledge of environmental issues in
wood manufacturing industries; Unit 16240, Interpret legislative
requirements and workplace compliance relating to wood
preservation operations.
This unit standard is
expiring
Explanatory notes
1
Definition
Worksite documentation refers to instructions to staff on policy and procedures
(including the application of legislation to worksite situations), which are formally
documented, and are available for reference at the worksite. Examples are standard
operating procedures, specifications, manuals, and manufacturer's information.
2
This unit standard refers to copper chrome arsenic (CCA) treatment plants, which
have been modified to accommodate the heat assisted fixation process or have a
fixation plant separate from the CCA treatment plant.
3
Evidence of the outcomes of this unit standard must be presented across the context
of 12 charges.
4
References
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
154 version 6
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Competence in this unit standard requires knowledge of the following:
a
NZS 3640:2003A1 Chemical Preservation of Round and Sawn Timber
Amendment 1. This is referred to below as ‘NZS 3640’, and is available from
Bennett’s Government Bookshops or online at http://www.standards.co.nz.
b
New Zealand Timber Preservation Council, Timber Preservation Quality Manual
(Wellington, 2005). This is referred to below as the ‘TPQM’.
c
Best Practice Guideline for the Safe Use of Timber Preservatives and
Antisapstain Chemicals (Wellington, 2005). This is referred to below as the
‘Guideline’. These last two references are available through the New Zealand
Timber Preservation Council, Wellington or online at http://www.nztpc.co.nz.
5
The reference text for this unit standard is: Demonstrate Knowledge of Wood
Preservation (Auckland: FITEC, 2002) and available from FITEC, PO Box 167 037,
Parnell, Auckland.
6
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
the code) for personal, product and worksite health and safety, and must meet
the obligations required under current legislation, including the Hazardous
Substances and New Organisms Act 1996, 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.
Outcomes and evidence requirements
This unit standard is
Demonstrate knowledge of the principles and purpose of the copper chrome arsenic
(CCA) fixation process.
expiring
Outcome 1
Evidence requirements
1.1
Commercial, economic and environmental benefits of fixing CCA preservatives
in wood are described in accordance with the reference text.
1.2
Principles and purpose of CCA fixation process are described in terms of the
reaction of wood compounds with CCA preservative components in accordance
with the reference text.
1.3
Factors influencing the CCA fixation process in terms of the degree of fixation
and the equivalent fixation time are described in accordance with the reference
text.
Range
Competenz
SSB Code 101571
factors – wood species, preservative, preservative uptake and
concentration, heat, wood temperatures and heat energy transfer.
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
154 version 6
Page 3 of 7
1.4
CCA preservative treatment methods, wood types and species which are
compatible with the heat fixation process are identified in accordance with
worksite documentation and the reference text.
1.5
CCA treated products which require heat assisted fixation on-site are identified
in accordance with worksite documentation.
Outcome 2
Demonstrate knowledge of the operation of CCA fixation plants.
Evidence requirements
2.1
Role, scope and responsibilities of the CCA fixation plant operator are
described in accordance with worksite documentation.
2.2
Operating parameters, capability and capacity of the on-site CCA fixation plant
are described in accordance with worksite documentation.
Range
2.3
Factors for consideration when scheduling CCA fixation charges to optimise
production throughputs are explained in accordance with worksite
documentation.
Range
2.4
may include but is not limited to – plant design and layout,
maximum and minimum charge volumes (sawn and round wood),
packet build and length, minimum pressure and/or temperature
requirements, fixation schedules, throughput capacity.
factors may include but are not limited to – priority order
timetabling, species and product suitability and availability, fixation
schedule requirements, anticipated charge duration and heat
availability, drip and storage considerations.
This unit standard is
Operating components of the CCA fixation plant are identified and their function
and sequence of operation
are explained in accordance with the Guideline and
expiring
worksite documentation.
Range
may include but is not limited to – plant design and layout, treating
vessel and door safety mechanisms, valves, pipe work linkages,
heat source, live steam or heat transfer pipe work, automatic and
manual control systems, gauges, thermostats, warning devices
and product handling systems, drip recovery areas.
Outcome 3
Demonstrate knowledge of fixation schedules and documentation requirements.
Evidence requirements
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
3.1
Documentation and charge sheet record requirements are identified and their
use explained in accordance with worksite documentation.
Range
3.2
154 version 6
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includes but is not limited to – charge sheets, production log
books.
Fixation schedules required for different timber characteristics are described in
accordance with worksite documentation and the reference text.
Range
species, size, thickness, sawn timber, roundwood.
Outcome 4
Identify, explain and apply safety and security requirements for CCA fixation plants.
Evidence requirements
4.1
Hazardous areas associated with the on-site CCA fixation plant site, its
operation and safety and security measures, are identified and risks are
explained in accordance with the Guideline, legislative requirements and
worksite documentation.
Range
4.2
Risk factors associated with the on-site CCA fixation plant and the safeguards
required are explained in accordance with Material Safety Data Sheets (MSDS),
the Guideline and legislative requirements.
Safety devices and features are identified, and their operating principles are
explained in accordance with the Guideline, legislative requirements and
worksite documentation.
Range
4.4
may include but is not limited to – toxicity, flammability.
This unit standard is
expiring
Range
4.3
may include but is not limited to – warning signs and symbols,
automatic and remote control mechanisms, loading and unloading
mechanisms, live steam or heat transfer pipework, heat exhaust
vents, valves and gauges.
may include but is not limited to – door safety devices, heat
venting, pressure relief valves, warning devices, pipe work,
lagging.
Safe operating and housekeeping practices are explained in accordance with
the Guideline, legislative requirements and worksite documentation.
Range
may include but is not limited to – safe operating practices, codes
of conduct and personal hygiene, appropriate personal protective
clothing and equipment, first aid facilities, emergency procedures.
Outcome 5
Assess the suitability of wood for the CCA fixation process.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
154 version 6
Page 5 of 7
Evidence requirements
5.1
Treatment suitability of each fixation charge is assessed and confirmed and
non-complying product is removed in accordance with worksite documentation.
Range
5.2
may include but is not limited – charge composition, packet
building strapping, product identification and treatment hazard
class specification attainment.
Information for calculating fixation schedules is collected and applied for
different timber characteristics in accordance with worksite documentation.
Range
may include but is not limited – species, size, thickness, sawn
timber, roundwood.
Outcome 6
Operate the CCA fixation plant and monitor charge and plant performance.
Evidence requirements
6.1
Critical factors influencing successful charge performance are explained and
applied in accordance with the reference text and worksite documentation.
6.2
Appropriate fixation schedule is applied in accordance with the technical
advisor’s recommendations and worksite documentation.
6.3
Process is operated and controlled in accordance with worksite documentation.
Range
6.4
6.5
loading, pre-start checks and recordings, start-up, fixation
schedules and duration, termination, unloading.
This unit standard is
Timber is held in the fixation
vessel for time, temperature or pressure
expiring
requirements in accordance with the technical advisor’s recommendations and
Charge and plant performance are monitored and corrective action taken in
accordance with worksite documentation to ensure complete fixation.
worksite documentation.
6.6
Equipment faults and malfunctions in the process cycle are identified and
corrective action taken in accordance with worksite documentation.
Range
may include but is not limited to – electrical, hydraulic, mechanical,
heat supply factors.
6.7
Charge is released from the drip recovery area once drip-free or in accordance
with the Guideline and worksite documentation.
6.8
Environmental measures are observed and preservative drip recovery and
contaminated water are handled in accordance with the Guideline and worksite
documentation.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
154 version 6
Page 6 of 7
Outcome 7
Assess and confirm CCA fixation effectiveness, complete documentation and manage
non-conforming product.
Evidence requirements
7.1
Treatment compliance is determined from the fixation schedule appropriate to
the charge composition, plant performance, product testing and fixation records,
and complying product is identified in accordance with worksite documentation.
7.2
Fixation charge records are completed in accordance with worksite
documentation.
7.3
Non-conforming product is isolated and alternative arrangements are made for
its use in accordance with worksite documentation.
Outcome 8
Apply maintenance requirements for the on-site CCA fixation plant.
Evidence requirements
8.1
Routine and preventative maintenance and cleaning requirements are
identified, explained and applied in accordance with the Guideline, legislative
requirements and worksite documentation.
Range
may include but is not limited to – plant maintenance schedules
and log books, plant and equipment calibration, vessel and/or
plant authorised certification, valves, gauges, lubrication,
contaminated water and/or drip recovery recycling, waste/sludge
removal and authorised disposal.
This unit standard is
Replacement information
This
unit standard and unit standard 21762 have been
expiring
replaced by unit standard 28015.
This unit standard is expiring. Assessment against the standard must take place by
the last date for assessment set out below.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
154 version 6
Page 7 of 7
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
5 July 1993
31 December 2015
Review
2
24 October 1996
31 December 2015
Review
3
10 February 1999
31 December 2015
Review
4
18 December 2006
31 December 2015
Review
5
18 April 2013
31 December 2015
Rollover
6
16 April 2015
31 December 2018
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.
This unit standard is
expiring
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016