NZQA registered unit standard
Title Direct double-end hot dipping for hot dip galvanizing
28452 version 1
Page 1 of 3
Level
Purpose
4 Credits 5
This unit standard is intended for those specialising in hot dipping.
People credited with this unit standard are able to plan, perform, direct, and monitor quality of double-end hot dipping for hot dip galvanizing.
Classification
Available grade
Entry information
Industrial Coatings > Hot Dip Galvanizing
Achieved
Recommended skills and knowledge
Unit standard 28451, Direct hot dipping for hot dip galvanizing .
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
;
ASTM E376-11 Standard Practice for Measuring Coating Thickness by Magnetic-
Field or Eddy-Current (Electromagnetic) Examination Methods, available at http://www.astm.org/ ; 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.

New Zealand Qualifications Authority 2020 NZ Motor Industry Training Organisation
(Incorporated) (MITO)
SSB Code 101542

NZQA registered unit standard 28452 version 1
Page 2 of 3
Outcome 1
Direct double-end hot dipping for hot dip galvanizing.
Evidence requirements
1.1 Double-end hot dipping requirements are determined in accordance with company procedures.
1.2 Orientation of components to crane system is planned to minimise overlap of coating.
1.3 Components are double-end dipped in the hot dip galvanizing kettle in accordance with company procedures.
Range immersion duration, tide mark, overlap, ash.
1.4 Components are withdrawn from the hot dip galvanizing kettle and visually inspected for quality of coating in accordance with company procedures.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
Double-end dipping achieves continuous coating with minimal overlap.
Dags are removed in accordance with company procedures.
Outcome 2
Monitor quality of the double-end hot dipping process for hot dip galvanizing.
Evidence requirements
2.1
Consistency of the double-end hot dipping processes is monitored in accordance with company procedures.
2.2 Where applicable records of hot dipping are kept in accordance with company procedures.
Planned review date 31 December 2019
Status information and last date for assessment for superseded versions
Process Version Date Last Date for Assessment
N/A Registration 1 16 April 2015
NZ Motor Industry Training Organisation
(Incorporated) (MITO)
SSB Code 101542

New Zealand Qualifications Authority 2020

NZQA registered unit standard 28452 version 1
Page 3 of 3
0114 Consent and Moderation Requirements (CMR) reference
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