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Title
Treat wood with light organic solvent preservative
Level
4
Credits
20
Purpose
People credited with this unit standard are able to: demonstrate
knowledge of the principles, purpose and legislative
requirements of the light organic solvent preservative (LOSP)
wood treatment process; demonstrate and apply knowledge of
LOSP formulation(s) and treatment specification requirements;
demonstrate knowledge of the operation of LOSP treatment
plants; identify and explain safety and security requirements for
LOSP plants; assess the treatment suitability of wood for LOSP
treatment and check preservative solution; operate a LOSP
treatment plant and monitor charge and plant performance;
assess and confirm LOSP treatment effectiveness; complete
documentation and records and analyse records to improve
productivity; and apply the maintenance requirements of LOSP
treatment plants.
Classification
Solid Wood Manufacturing > Timber Drying and Treatment
Available grade
Achieved
Entry information
Recommended skills
and knowledge
Unit 155, Demonstrate knowledge of the characteristics of
wood; Unit 156, Demonstrate knowledge of phytosanitary
standards in the solid wood manufacturing industry; Unit 159,
Demonstrate knowledge of environmental issues in wood
manufacturing industries; Unit 8339, Demonstrate knowledge
of the principles of wood preservation and antisapstain
treatment; and Unit 16240, Interpret legislative requirements
and workplace compliance relating to wood preservation
operations.
Explanatory notes
1
Definitions
Biological degradation refers to products affected by insects, mould, sapstain, decay
fungi, internal brown stain.
Efficacy is defined as being capable of or successful in producing an intended result;
effective.
Worksite documentation refers to instructions to staff on policy and procedures
(including the application of legislation to worksite situations), which are formally
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documented, and are available for reference at the worksite. Examples are standard
operating procedures, specifications, manuals, and manufacturer's information.
2
Evidence of the outcomes of this unit standard must be presented across the context
of 12 charges involving at least two different timber sizes.
3
References
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.
4
The reference text for this unit standard is: Demonstrate Knowledge of Wood
Preservation (Auckland: Competenz, 2002) and available from Competenz, PO Box
9005, Newmarket, Auckland 1149.
5
The following apply to the performance of all outcomes of this unit standard:
a
All work practices must meet recognised codes of practice, guidelines and
documented worksite health and safety and environmental procedures (where
these exceed the code) for personnel, 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
Outcome 1
Demonstrate knowledge of the principles, purpose and legislative requirements of the light
organic solvent preservative (LOSP) wood treatment process.
Evidence requirements
1.1
Principles and purpose of the LOSP treatment process are explained in terms of
treatment phases, cycles and sequences in accordance with the reference text
and worksite documentation.
1.2
Advantages and limitations of LOSP treatment in comparison with waterborne
treatment processes are described in accordance with the reference text.
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1.3
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Requirements of legislation and the Guideline are described in terms of their
effect on the operation of LOSP plants in accordance with worksite
documentation.
Outcome 2
Demonstrate and apply knowledge of LOSP formulation(s) and treatment specification
requirements.
Evidence requirements
2.1
LOSP formulation(s) used at the plant are identified and their properties and
uses are explained in accordance with the reference text.
2.2
Treatment specification requirements for LOSP are referenced and explained in
accordance with NZS 3640, TPQM, and worksite documentation.
Range
2.3
may include but is not limited to – approved species, product
characteristics, condition and moisture content, preservative type,
process and schedule requirements, quality checks, product
branding and labelling, out-of-specification product (prior to and
after treatment), environmental requirements.
Documentation and charge sheet record requirements are identified and their
use explained in accordance with TPQM worksite documentation.
Range
charge sheets, reconciliation statements, sampling summaries,
analytical records, production log books.
Outcome 3
Demonstrate knowledge of the operation of LOSP treatment plants.
Evidence requirements
3.1
The role, scope and responsibilities of the LOSP plant operator are described in
accordance with worksite documentation.
3.2
Operating parameters, capability and capacity of the on-site LOSP plant are
explained in accordance with worksite documentation.
Range
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SSB Code 101571
may include but is not limited to – plant design and layout, packet
build and length, minimum and maximum charge volumes,
treatment schedules and duration, preservative storage capacities.
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3.3
Factors for consideration when scheduling LOSP charges to optimise
production throughputs are explained in accordance with worksite
documentation.
Range
3.4
may include but is not limited to – prioritisation by customer
requirements, product suitability and availability, hazard level,
specification requirements and charge duration, preservative stock
levels.
Operating components of the LOSP treatment plant are identified and their
function and sequence of operation explained in accordance with the Guideline
and worksite documentation.
Range
3.5
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may include but is not limited to – plant design and layout,
treatment vessel, door seal and safety mechanisms, vacuum and
pressure pumps, valves, pipe work linkages, automatic control
console, measuring gauges, exhaust pipe(s), flooding and storage
vessels, air compressor, vacuum pump cooling tank.
Plant control and product testing equipment is identified, serviceability checked
and their use explained in accordance with TPQM and worksite documentation.
Range
may include but is not limited to – moisture meter,
solution/preservative strength verification, spot test solutions and
viability, gauge accuracy verification, load sample preparation and
results verification.
Outcome 4
Identify and explain safety and security requirements for LOSP plants.
Evidence requirements
4.1
Hazardous areas on the treatment site, and safety and security measures are
identified and risks explained in accordance with legislative requirements, the
Guideline, and worksite documentation.
Range
4.2
may include but is not limited to – warning signs and symbols,
authorised access areas and requirements, LOSP storage
vessels, vacuum exhaust valves, unventilated or confined spaces,
automatic remote control mechanisms, loading and unloading
mechanisms, chemical handling areas.
Risk factors associated with LOSP formulations used on the worksite and the
safeguards required are explained in accordance with Material Safety Data
Sheets (MSDS), the Guideline and legislative requirements.
Range
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may include but is not limited to – toxicity, flammability.
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4.3
Safety devices and features are identified and their operating principles are
explained in accordance with legislative requirements, the Guideline, and
worksite documentation.
Range
4.4
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may include but is not limited to – door safety devices, relief
valves, warning devices, sprinklers.
Safe operating and housekeeping requirements 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, chemical and product handling, fire
extinguisher and sprinkler certification currency, eye wash,
emergency shower, first aid facilities, emergency procedures,
designated product ventilation areas.
Outcome 5
Assess the treatment suitability of wood for LOSP treatment and check preservative
solution.
Evidence requirements
5.1
Treatment suitability of the charge is fully assessed and confirmed against NZS
3640, the Guideline, and worksite documentation requirements, and noncomplying product is removed.
Range
5.2
may include but is not limited to – approved species, product
characteristics, charge composition, surface condition and
moisture content, biological degradation, pre-cutting, machining,
profiling, glue bond compatibility, packet build, filleting, hazard
class compliance.
LOSP chemical type and solution strength is confirmed, and working tank
volume requirement is determined and adjusted in accordance with hazard
class requirements and worksite documentation.
Outcome 6
Operate a LOSP treatment plant and monitor charge and plant performance.
Evidence requirements
6.1
Critical factors influencing successful LOSP charge performance are explained
in accordance with the reference text.
6.2
Charge schedule is selected and all necessary plant pre-treatment checks are
confirmed in accordance with worksite documentation.
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SSB Code 101571
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6.3
Process is operated and controlled in accordance with worksite documentation.
Range
6.4
loading, pre-preparation, pre-start checks, start-up, treatment
period, termination, unloading.
Charge and plant performance are monitored and corrective action adjustments
made in accordance with worksite documentation.
Range
6.5
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includes but is not limited to – vacuum intensity, pressure relief
valves and gauges, cycle duration, vessel or valve leakage.
Equipment faults and malfunctions in the process cycle are identified and
corrective action is taken in accordance with worksite documentation.
Range
may include but is not limited to – electrical, hydraulic, mechanical.
6.6
Information is entered onto charge sheets as the charge progresses for manual
operation.
6.7
End point of the treatment process is determined and the treatment process is
terminated in accordance with worksite documentation.
Range
6.8
includes but is not limited to – draining treatment vessel,
maximising solvent recovery, final solution measurements and
recordings.
Environmental and safety measures are observed for the treated product in
accordance with legislative requirements, the Guideline, and worksite
documentation.
Range
may include but is not limited to – designated ventilation area,
solvent evaporation time allowance, branding and labelling time
provision, treatment vessel ventilation, spillage/sump solution
recovery.
Outcome 7
Assess and confirm LOSP treatment effectiveness.
Evidence requirements
7.1
Treatment compliance is determined from charge sheet results and product
testing in accordance with the TPQM and NZS 3640 specification requirements.
Range
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may include but is not limited to – charge sheet compliance
parameters, correct product sampling prescription applied, valid
test samples collected and prepared, correct interpretation of spot
test results, accurate results determination and recording, charge
samples batched, labelled and held for audit purposes as required.
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Outcome 8
Complete documentation and records and analyse records to improve productivity.
Evidence requirements
8.1
Charge sheets are completed, and charge performance comments entered and
distributed in accordance with worksite documentation.
8.2
Reconciliations are completed and processed in accordance with worksite
documentation.
8.3
Documentation is completed in accordance with the TPQM and worksite
documentation.
Range
8.4
includes but is not limited to – production log books, sampling
summaries, accident registers, production summaries.
Treatment documents are analysed and corrective action taken to improve
productivity.
Range
includes but is not limited to – chemical usage, product factors,
out-of-specification product, operator training or assistance,
production scheduling and control factors.
Outcome 9
Apply the maintenance requirements of LOSP treatment plants.
Evidence requirements
9.1
Routine and preventative maintenance and cleaning requirements are
explained and applied in accordance with legislative requirements, the
Guideline, and worksite documentation.
Range
9.2
may include but is not limited to – plant maintenance log books,
plant and equipment calibration, belt drives, ball and roller
bearings, gland packing, hydraulic systems, pump seals,
impellors, filters, valves, gauges, sight glasses, lubrication, door
seal replacements, plant operating equipment, compressors,
sludge and waste handling, removal and authorised disposal.
Product and material inventory levels are maintained to meet production and
contingency requirements in accordance with worksite documentation.
Range
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may include but is not limited to – preservative chemicals,
chemical reagents, test equipment, solution containers, blank
charge sheets, plant maintenance materials, protective clothing
and first aid kits, strapping.
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9.3
Preservative solutions and/or product samples for laboratory analysis are
collected, tested, labelled and dispatched in accordance with the TPQM and
worksite documentation.
9.4
Laboratory analysis results for preservative solutions and treated products are
correctly interpreted and matched against NZS 3640 specification requirements
and operator check measurements, and corrective action is taken in
accordance with worksite documentation.
includes but is not limited to –
product – penetration, retention zone, retention zone loadings;
solution – active ingredients, preservative ratios and balance of
solution strength.
Range
9.5
Procedures for varying or extending plant approvals are referenced and
explained in accordance with requirements of the TPQM.
includes but is not limited to – species, process variations, product
condition, preservative type, dispensations.
Range
Replacement information
This unit standard, unit standard 21759, and unit
standard 21760 have been replaced by unit standard
28016.
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
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 2018
Rollover
6
19 November 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.
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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