NZQA Expiring unit standard
8387 version 9
Page 1 of 3
Title
Demonstrate knowledge of environmental pollutants in tannery
discharges
Level
3
Credits
Purpose
7
This unit standard is for people new to the leather industry or
those wishing to develop their technical skills in leather
manufacture.
People credited with this unit standard are able to describe:
tannery wastes in terms of type, origin, and environmental
impacts; methods used to treat environmental pollutants
contained in tannery discharges; and alternative technologies
used to avoid or reduce pollutants in tannery discharges.
Classification
Leather Manufacturing > Leather Manufacture Technology
Available grade
Achieved and Merit
Explanatory notes
1
Legislation relevant to this unit standard includes but is not limited to – Health and
Safety in Employment Act 1992 and the Resource Management Act 1991.
2
Version 3 of this unit standard introduced criteria for merit. Wherever a merit
requirement appears in this unit standard it assumes that the requirements for credit
have been met.
This unit standard is
Outcomes and evidence requirements
expiring
Outcome 1
Describe tannery wastes in terms of type, origin, and environmental impacts.
Evidence requirements
1.1
Waste discharges from tanneries are described by type, originating process
stage and potential environmental impact.
Credit
Merit
two of the following – wastewaters, sludges, solids, odours.
plus one other.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
8387 version 9
Page 2 of 3
Outcome 2
Describe methods used to treat environmental pollutants contained in tannery discharges.
Evidence requirements
2.1
Waste treatment methods are described in terms of purpose, operating
principles, and equipment used.
Credit
Merit
three of the following – sulphide oxidation, chrome precipitation,
screening, grease flotation, balancing, pH adjustment,
sedimentation, air scrubbing.
plus two others.
Outcome 3
Describe alternative technologies used to avoid or reduce pollutants in tannery discharges.
Evidence requirements
3.1
Alternative technologies are described in terms of tannery practices and
equipment used.
Credit
Merit
two of the following, which may include but are not limited to – hair
recovery, wet white, high exhaustion chrome, automatic chemical
dosing equipment, computerised process control, process liquor
recycling, roller coat finishing, solid wastes utilisation, wool grease
as fuel.
plus one other.
This unit standard
and unit standard 16528
This unit
standard
is have been
replaced by unit standard 27905.
expiring
Replacement information
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
8387 version 9
Page 3 of 3
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
24 September 1996
31 December 2015
Revision
2
23 March 1999
31 December 2015
Review
3
27 April 2000
31 December 2015
Revision
4
20 February 2002
31 December 2015
Revision
5
14 October 2004
31 December 2015
Review
6
14 December 2007
31 December 2015
Review
7
21 February 2013
31 December 2015
Rollover
8
20 March 2015
31 December 2017
Rollover
9
17 September 2015
31 December 2018
Consent and Moderation Requirements (CMR) reference
0185
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.
This unit standard is
expiring
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