NZQA registered unit standard
21799 version 3
Page 1 of 4
Title
Operate a lactose milling process in a dairy processing operation
Level
4
Purpose
Credits
5
This unit standard is for people carrying out milk product
processing in a dairy processing operation.
People credited with this unit standard are able to: demonstrate
knowledge of the lactose milling process; prepare to operate a
lactose milling process; and operate and monitor a lactose
milling process, in a dairy processing operation.
Classification
Dairy Processing > Milk Products
Available grade
Achieved
Explanatory notes
1
Legislation
Legislation relevant to this unit standard includes but is not limited to the Animal
Products Act 1999, Health and Safety in Employment Act 1992, and Animal Products
(Dairy) Regulations 2005.
2
Definitions
Control points refer to those key points in a work process which must be monitored
and controlled. This includes food safety (critical), quality and regulatory control
points as well as inspection points
Lactose equipment – grinding mills, sieves, conveyors and pumping systems,
evaporators, crystallisation tanks, decanting plant, driers.
Materials – lactose and additives or other agents as required, consistent with the
provisions of the Joint Australian and New Zealand Food Standards and other
organisational requirements.
Monitoring the process – the use of production data such as performance control
charts.
Organisational requirements – instructions to staff on policies and procedures which
are documented in memo, electronic or manual format and are available in the
workplace. These include but are not limited to site-specific and company standard
operating procedures, food safety and quality management requirements.
Workplace information– Standard Operating Procedures (SOPs), specifications,
production schedules and batch and/or recipe instructions.
3
This unit standard must be assessed in a realistic workplace environment. The
candidate must be under realistic time pressures and use relevant commercial
equipment.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
21799 version 3
Page 2 of 4
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of the lactose milling process in a dairy processing operation.
Evidence requirements
1.1
The purpose of the lactose milling process is outlined in terms of the
relationships between the milling process and other related processes.
1.2
The stages and changes which occur during lactose milling are identified and
explained in terms of the effects of process stages on the end product.
1.3
Materials preparation requirements are identified and explained in terms of the
effect of variation on the process.
1.4
The main methods used to mill lactose are identified and explained in terms of
the variables in the process.
Range
1.5
variables include but are not limited to – plant specifications, raw
materials.
Methods of monitoring control points and maintaining control of the process are
identified and outlined in terms of the common causes of variation and
corrective action required.
Range
methods include but are not limited to – process specifications,
procedures, operating parameters, equipment and instrumentation
components, materials and services, sampling and testing,
recording requirements.
1.6
Shut-down, cleaning and sanitation requirements are identified and explained in
terms of the changeover process and different types of shut-downs.
1.7
Safety issues related to the lactose milling process are identified and outlined in
terms of organisational requirements.
Range
safety issues include but are not limited to – health and safety
hazards and controls, lockout and tag procedures, environmental
protection and controls.
Outcome 2
Prepare to operate a lactose milling process in a dairy processing operation.
Evidence requirements
2.1
Workplace information is accessed to identify production requirements for
milling in accordance with organisational requirements.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
21799 version 3
Page 3 of 4
2.2
Materials and services necessary to the lactose milling process are confirmed
and available to meet production requirements.
2.3
Milling equipment is checked to confirm status, condition and readiness for use
in accordance with organisational requirements.
2.4
The milling process is set to meet production outputs in accordance with
organisational requirements.
Outcome 3
Operate and monitor the lactose milling process in a dairy processing operation.
Evidence requirements
3.1
The lactose milling process is started up in accordance with organisational
requirements.
3.2
Lactose milling equipment, product and control points are monitored to confirm
that they meet production requirements.
Range
monitoring may include but is not limited to – monitoring control
points and parameters, adjusting operating parameters, plant
checks, identifying sampling and testing requirements, taking
samples, handling samples, dispatch of samples, conducting tests.
3.3
Any out-of-specification product, process and equipment performance is
identified, rectified and/or reported in accordance with organisational
requirements.
3.4
Lactose milling equipment is cleaned and sanitised in accordance with
organisational requirements.
3.5
Waste is collected, treated and disposed of or stored for recycling in
accordance with organisational requirements.
3.6
Workplace information is recorded in accordance with organisational
requirements.
3.7
Lactose milling equipment is shut down in accordance with organisational
requirements.
Range
Planned review date
shutdown includes but is not limited to – putting plant on standby,
routine, emergency situation.
31 December 2020
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
21799 version 3
Page 4 of 4
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
27 July 2005
31 December 2016
Rollover
2
17 July 2009
31 December 2016
Review
3
16 July 2015
N/A
Consent and Moderation Requirements (CMR) reference
0022
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 Primary Industry Training Organisation standards@primaryito.ac.nz if
you wish to suggest changes to the content of this unit standard.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016