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Title / Degrease, pickle, rinse and flux for hot dip galvanizing
Level / 3 / Credits / 10
Purpose / People credited with this unit standard are able to, under supervision, degrease, pickle, rinse and flux metal components for hot dip galvanizing.
Classification / Industrial Coatings > Hot Dip Galvanizing
Available grade / Achieved
Explanatory notes
1 The current version of the following documents must be complied with:
AS/NZS 4680:2006 Hot-dip galvanized (zinc) coatings on fabricated ferrous articles, available at http://www.standards.co.nz;
After-Fabrication Hot Dip Galvanizing: A practical reference for designers, specifiers, engineers, consultants, manufacturers, and users, Galvanizing Association of New Zealand, available at http://www.galvanizing.org.nz;
manufacturer’s instructions.
2 Health and safety procedures must be followed in accordance with workplace and legislative requirements for all tasks leading to assessment of this standard. Personal protective equipment (PPE) must be used throughout operations in accordance with company procedures and manufacturer’s instructions.
3 Definition
Company procedures refer to all documented policies and procedures of the candidate’s employer at the time of training including, but not limited to, those relating to health, safety, environment, quality, and operations.
4 Performance in this standard is to be assessed under supervision.
Outcomes and evidence requirements
Outcome 1
Degrease metal components for hot dip galvanizing.
Evidence requirements
1.1 Jig and components are lifted and moved to degreasing bath, immersed, and supported in degreasing solution in accordance with company procedures.
Range components – solid, plate, hollow, fabricated.
1.2 Jig and components are removed from degreasing solution and visually inspected for quality of degreasing, drainage, and venting in accordance with company procedures.
Range inspection may include but is not limited to – hole size, paint, antispatter, grease.
1.3 Any faults are remedied in accordance with company procedures.
1.4 Components are completely drained before transfer to the next process in accordance with company procedures.
1.5 Where applicable, residue is removed from degreasing tank surface prior to and after removal of components in accordance with company procedures.
Outcome 2
Pickle metal components for hot dip galvanizing.
Evidence requirements
2.1 Jig and components are lifted and moved to pickling bath, immersed, and supported in pickling solution in accordance with company procedures.
Range components – solid, plate, hollow, fabricated.
2.2 The component is immersed for the length of time required to obtain the desired pickling result.
2.3 Jig and components are removed from the pickling solution and visually inspected for quality of pickling, drainage, and venting in accordance with company procedures.
Range may include but is not limited to – hole size, paint, mill scale, antisplatter, grease, rust.
2.4 Any faults are remedied in accordance with company procedures.
2.5 Components are completely drained before transfer to the next process in accordance with company procedures.
2.6 Where applicable, residue is removed from pickling bath prior to and after removal of components, in accordance with company procedures.
Outcome 3
Rinse metal components for hot dip galvanizing.
Evidence requirements
3.1 Jig and components are lifted and moved to rinsing bath, immersed, and supported in rinsing solution in accordance with company procedures.
Range components – solid, plate, hollow, fabricated.
3.2 Jig and components are removed from rinsing solution and visually inspected for drainage and venting in accordance with company procedures.
3.3 Any faults are remedied in accordance with company procedures.
3.4 Components are completely drained before transfer to the next process in accordance with company procedures.
Outcome 4
Flux metal components for hot dip galvanizing.
Evidence requirements
4.1 Components and jig are lifted and moved to flux bath, immersed, and supported in fluxing solution in accordance with company procedures.
Range components – solid, plate, hollow, fabricated.
4.2 Jig and components are removed from fluxing solution and visually inspected for drainage and venting in accordance with company procedures.
4.3 Any faults are remedied in accordance with company procedures.
4.4 Components are drained and dried before transfer to the next process in accordance with company procedures.
Replacement information / This unit standard replaced unit standards 21167, 21168, 21169, and 21170.Planned review date / 31 December 2019
Status information and last date for assessment for superseded versions
Process / Version / Date / Last Date for Assessment /Registration / 1 / 16 April 2015 / N/A
Consent and Moderation Requirements (CMR) reference / 0114
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 the NZ Motor Industry Training Organisation (Incorporated) (MITO) if you wish to suggest changes to the content of this unit standard.
NZ Motor Industry Training Organisation (Incorporated) (MITO)SSB Code 101542 / Ó New Zealand Qualifications Authority 2015