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Title / Demonstrate knowledge of raw materials used in glass container manufacturing
Level / 4 / Credits / 10
Purpose / People credited with this unit standard are able to demonstrate knowledge of the raw materials used in glass container manufacturing.
Classification / Glass and Glazing > Glass Container Manufacturing
Available grade / Achieved
Entry information
Recommended skills and knowledge / Unit 18769, Receive raw materials and operate storage, handling, and batching equipment in glass container manufacturing; Unit 18770, Perform analytical tests for batch and glass quality in glass container manufacturing; Unit 23068, Control raw material weighing and delivery equipment and operate a glass furnace; or demonstrate equivalent knowledge and skills.
Explanatory notes
Definitions
Raw materials are major and minor raw materials.
Major raw materials are sand, soda ash, limestone, cullet.
Cullet is clean and sorted crushed glass.
Minor raw materials include selenium, iron chromite, iron pyrites, iron sand, sodium sulphate, alumina, carbon, cobalt.
Enterprise means an organisation where training and/or assessment is taking place, and/or where the trainee is employed.
Enterprise procedure is defined as actions which comply with the policies, systems, and directives in a particular enterprise. Enterprise procedure must comply with the requirements of the Health and Safety in Employment Act 1992, and subsequent amendments.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of raw materials used in glass container manufacturing.
Evidence requirements
1.1The purpose and attributes of each of the raw materials used in glass container manufacturing are described.
1.2The advantages and disadvantages of each raw material used for glass container manufacturing are compared in terms of container product quality and productivity.
1.3The basic molecular form and arrangement of container glass is described.
Rangemolecular arrangement – non-crystalline, random.
1.4The relationship between glass temperature and viscosity is described.
1.5The sources of the raw materials used by the enterprise are identified, and the properties peculiar to these materials described.
1.6The importance of raw material quality and consistency is described in terms of the implications for container product quality.
Rangeraw material quality includes – chemical specifications, sizing specifications, refractory particle contaminants, moisture content, decrepitation.
1.7Enterprise procedures for determining glass batch formulations are described.
Planned review date / 31 December 2019Status information and last date for assessment for superseded versions
Process / Version / Date / Last Date for AssessmentRegistration / 1 / 20 November 2006 / 31 December 2017
Review / 2 / 16 April 2015 / N/A
Consent and Moderation Requirements (CMR) reference / 0134
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 (CMRs). 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 Competenz at you wish to suggest changes to the content of this unit standard.
CompetenzSSB Code 101571 / New Zealand Qualifications Authority 2018