NZQA Expiring unit standard
25674 version 2
Page 1 of 4
Title
Explain environmental management of air discharges from drying
plant and boilers on a dairy manufacturing site
Level
4
Credits
8
Purpose
People credited with this unit standard are able to: explain
potential sources of contaminants in air discharges from drying
plant and boilers on a dairy manufacturing site; explain systems
used to monitor contaminants in air discharges from drying
plant and boilers on a dairy manufacturing site; explain use of
computer modelling to predict the effect of air discharges from
drying plant and boilers on a dairy manufacturing site on
ambient air quality; explain use of measures to reduce the
effects of air discharges from drying plant and boilers on a dairy
manufacturing site on ambient air quality; and explain effects of
air discharges, from drying plant and boilers on a dairy
manufacturing site, on climate change and relevant legislative
requirements.
Classification
Dairy Manufacturing > Dairy Environmental Management
Available grade
Achieved
Entry information
Critical health and
safety prerequisites
Open.
Explanatory notes
Legislation relevant to this unit standard includes but is not limited to – Health and Safety
in Employment Act 1992, Health and Safety in Employment Regulations 1995,
Resource Management Act 1991, and Resource Management (National
Environmental Standards Relating to Certain Air Pollutants, Dioxins, and Other
Toxics) Regulations 2004 (SR 2004/309, SR 2004/433, SR 2005/214, SR 2008/375).
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
25674 version 2
Page 2 of 4
Outcomes and evidence requirements
Outcome 1
Explain potential sources of contaminants in air discharges from drying plant and boilers
on a dairy manufacturing site.
Evidence requirements
1.1
Explanation covers effects of fuel sources on particulates and gas contaminants
from boiler air discharges.
Range
1.2
includes but is not limited to – natural gas, coal, biofuels.
Explanation covers effects of product types on contaminants from drier air
discharges.
Range
includes but is not limited to – milk powders, caseins, whey
powders.
Outcome 2
Explain systems used to monitor contaminants in air discharges from drying plant and
boilers on a dairy manufacturing site.
Evidence requirements
2.1
Explanaton covers applications and limitations of methodologies used to
monitor air discharges from boiler and drier discharge stacks.
Range
2.2
includes but is not limited to – inline measurement, periodic
measurement, particulates, sulphur dioxide.
Explanation covers applications, limitations, and locations of methodologies
used to monitor ambient air quality in the vicinity of boiler and drier discharge
stacks.
Range
includes but is not limited to – particulates, sulphur dioxide,
nitrogen oxides.
Outcome 3
Explain use of computer modelling to predict the effect of air discharges from drying plant
and boilers on a dairy manufacturing site on ambient air quality.
Evidence requirements
3.1
Explanation covers use of computer modelling as a tool for preparing an
assessment of environmental effect on ambient air quality for a new resource
consent.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
25674 version 2
Page 3 of 4
3.2
Explanation covers effects of climate, terrain, and discharge characteristics on
the accuracy of computer modelling.
3.3
Explanation covers methodologies used to measure meterological conditions
and terrain for computer modelling.
Outcome 4
Explain use of measures to reduce the effects of air discharges from drying plant and
boilers on a dairy manufacturing site on ambient air quality.
Evidence requirements
4.1
Explanation covers effectiveness of measures used to reduce levels of
contaminants from air discharges.
Range
bag filters, electrostatic precipitation, wet-scrubbers, cyclones.
4.2
Explanation covers effects of air discharge location and height on ambient air
quality.
4.3
Explanation covers selection and setting of boiler fuel specifications to reduce
contaminants in boiler air discharges.
Range
includes but is not limited to – sulphur, particulates.
Outcome 5
Explain effects of air discharges, from drying plant and boilers on a dairy manufacturing
site, on climate change and relevant legislative requirements.
Evidence requirements
5.1
Explanation covers effects of carbon dioxide emissions on climate change.
5.2
Explanation covers effects of Resource Management Regulations for
particulates and sulphur dioxide on the granting of resource consents.
5.3
Explanation covers monitoring of air discharges for compliance with resource
consent conditions.
Replacement information
This unit standard has been replaced by unit standard
28626
This unit standard is expiring. Assessment against the standard must take place by
the last date for assessment set out below.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
25674 version 2
Page 4 of 4
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
19 June 2009
31 December 2018
Review
2
17 September 2015
31 December 2018
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.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016