28462 Use a Centrifuge to Hot Dip Galvanize Small Metal Components

Explanatory notes

1The 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

After-Fabrication Hot Dip Galvanizing: A practical reference for designers, specifiers, engineers, consultants, manufacturers, and users, Galvanizing Association of New Zealand,available at

ASTME376-11Standard Practice for Measuring Coating Thickness by Magnetic-Field or Eddy-Current (Electromagnetic) Examination Methods,available at

Manufacturer’s instructions.

2Health and safety procedures must be followed in accordance with workplace and legislative requirements for all tasks leading to assessment against this standard. Personal protective equipment (PPE) must be used throughout operations in accordance with company procedures and manufacturer’s instructions.

3Definition

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.

4Performance in this standard is to be assessed under supervision.

Outcomes and evidence requirements

Outcome 1

Dip small metal components for hot dip galvanizing.

Rangethreaded, non-threaded, hollow section, castings, chain.

Evidence requirements

1.1Components are prepared and transferred to basket with no spillage.

1.2Kettle surface is swept and ash removed in accordance with company procedures.

Rangeprior to immersion, prior to withdrawal.

1.3Baskets are lifted and moved to hot dip galvanizing kettle in accordance with company procedures, and are lowered into kettle without splashing.

1.4Components are immersed and stirred, and basket is removed from kettle, in accordance with company procedures.

1.5The basket is drained and transferred to centrifuge in accordance with company procedures.

Outcome 2

Centrifuge small metal components for hot dip galvanizing.

Rangethreaded, non-threaded, hollow section, castings, chain.

Evidence requirements

2.1Small metal components are centrifuged in accordance with company procedures.

2.2Baskets are removed from centrifuge and transferred to quench or rumbler in accordance with company procedures.

Status information and last date for assessment for superseded versions

This CMR can be accessed at

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) you wish to suggest changes to the content of this unit standard.