2453 version 6
Page 1 of 3
Operate the liquor treatment loop and primary separator
Level
3
Credits
14
Purpose
This unit standard is for people working in the wool scouring industry. People
credited with this unit standard are able to prepare and use liquor treatment
equipment to process scouring liquor, identify problems in the operation of
the equipment, carry out minor maintenance and maintain records as
required.
Subfield
Textiles Manufacture
Domain
Wool Scouring
Status
Registered
Status date
25 January 1995
Date version published
25 June 2007
Planned review date
31 December 2010
Entry information
Open.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
Competenz
Accreditation and Moderation Action Plan (AMAP) reference
0030
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
All activities will be carried out in accordance with the Health and Safety in Employment
Act 1992.
 New Zealand Qualifications Authority 2016
2453 version 6
Page 2 of 3
Elements and performance criteria
Element 1
Demonstrate knowledge of wool scour liquor treatment and grease recovery.
Performance criteria
1.1
Liquor treatment loop is described and loop sections and components identified.
1.2
Reasons for treatment of scour liquor and recovery of wool grease are
described.
Range
1.3
environmental, operational, financial.
Local regulations and workplace procedures relating to liquor discharges are
described.
Element 2
Prepare liquor recycling loop and equipment for operation.
Performance criteria
2.1
Liquor transfer pumps are started in sequence specified in operating procedure.
2.2
Valves and liquor control devices are set to direct and control liquor according to
requirements of installed system.
Element 3
Prepare and operate separator.
Performance criteria
3.1
Separator is assembled and checked prior to operation according to machinery
manufacturer’s instructions.
Range
cleanliness of parts, oil level, vibration free, no liquor leaks.
3.2
Flows and pumps are started according to operating procedures.
3.3
Equipment is monitored and adjustments made to ensure plant is operating to
workplace requirements.
Range
3.4
feed, holding tank levels, liquor temperatures, pump operation.
Cream flow directed to the holding tank as required by work instruction and
according to workplace practice.
 New Zealand Qualifications Authority 2016
2453 version 6
Page 3 of 3
3.5
Cream quality is checked and plant procedure followed if quality does not meet
standard required in work instructions.
Element 4
Close down treatment loop and separator.
Performance criteria
4.1
Liquor flows are stopped according to requirements of installed equipment.
4.2
Separator is dismantled and cleaned according to operating instructions.
4.3
Separator parts are checked for wear and reporting procedures followed when
wear has occurred.
Range
bowl, distributor, jets.
Please note
Providers must be accredited by NZQA, or an inter-institutional body with delegated
authority for quality assurance, before they can report credits from assessment against
unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be accredited by NZQA before they can register
credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
Accreditation requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP 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 info@competenz.org.nz if you wish to suggest changes to the
content of this unit standard.
 New Zealand Qualifications Authority 2016