NZQA registered unit standard 28441 version 1
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Title Dip, quench, and air dry for hot dip galvanizing
Level 3 Credits 10
Purpose People credited with this unit standard are able to, under supervision, dip, quench, and air dry 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
; m anufacturer’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.
Outcome 1
Dip metal components for hot dip galvanizing.
Range evidence is required of dipping solid, plate, hollow, and fabricated components; at least one component is to be double-end dipped.

New Zealand Qualifications Authority 2020 NZ Motor Industry Training Organisation
(Incorporated) (MITO)
SSB Code 101542

NZQA registered unit standard 28441 version 1
Page 2 of 3
Evidence requirements
Kettle surface is swept in accordance with company procedures. 1.1
1.2 Components are lifted and moved to the hot dip galvanizing kettle in accordance with company procedures.
1.3 Components are immersed in the hot dip galvanizing kettle in accordance with company procedures.
1.4 Components are withdrawn from the hot dip galvanizing kettle and visually inspected for quality of coating in accordance with company procedures.
Range continuity of coating, uniformity of coating, dross and/or ash contamination.
1.5
1.6
2.2
Double-end dipping achieves continuous coating with minimal overlap.
Dags are removed in accordance with company procedures.
1.7 Components are drained before transfer to the next process in accordance with company procedures.
Outcome 2
Quench and air dry metal components for hot dip galvanizing.
Evidence requirements
2.1 Work to be excluded from quenching is identified in accordance with company procedures.
Range may include
– no quench or air cool tags, unsuitable components.
Components are quenched in accordance with company procedures.
Range solid, hollow, fabricated, double-end dipped components.
2.3 Components are air dried in accordance with company procedures.
Replacement information This unit standard replaced unit standard 21171.
Planned review date 31 December 2019

New Zealand Qualifications Authority 2020 NZ Motor Industry Training Organisation
(Incorporated) (MITO)
SSB Code 101542

NZQA registered unit standard 28441 version 1
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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) info@mito.org.nz
if you wish to suggest changes to the content of this unit standard.
NZ Motor Industry Training Organisation
(Incorporated) (MITO)
SSB Code 101542

New Zealand Qualifications Authority 2020