NZQA registered unit standard
8394 version 7
Page 1 of 4
Title
Develop systems for managing tannery waste discharges
Level
6
Purpose
Credits
40
This unit standard is for experienced people wishing to further
develop their skills in leather manufacture.
People credited with this unit standard are able to: demonstrate
knowledge of legislation and bylaws related to tannery waste
discharges; evaluate tannery processes that generate waste;
evaluate methods to minimise and treat tannery waste; develop
management systems for the elimination and reduction of
tannery wastes; manage discharges of tannery wastes; and
comply with organisational and statutory hygiene and safety
requirements.
Classification
Fellmongery and Leather Processing > Leather Processing
Knowledge
Available grade
Achieved
Explanatory notes
1
Legislation relevant to this unit standard includes but is not limited to – Health and
Safety in Employment Act 1992, Resource Management Act 1991.
2
Definitions
Bylaws – the bylaws and/or instructions of local authorities with administrative
authority over waste treatment and effluent disposal relating to tannery operations.
Organisational requirements – instructions to staff on policies and procedures which
are documented in memo, electronic or manual format and are available in the
workplace.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of legislation and bylaws related to tannery waste discharges.
Evidence requirements
1.1
Legal requirements related to tannery waste discharges are identified and
described from legislation.
1.2
Discharge limits on tannery wastes are identified and described from local
authority bylaws.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
8394 version 7
Page 2 of 4
Outcome 2
Evaluate tannery processes that generate waste.
Evidence requirements
2.1
Tannery processes that generate waste are identified and evaluated for fitness
for purpose from historical data and physical inspections.
2.2
Waste products are identified and quantified for each process stage.
Range
2.3
stages may include but are not limited to – soaking, liming,
deliming and bating, pickling and tanning, post-tanning, finishing.
Total tannery discharges are quantified and compared to statutory and by-law
requirements.
Range
discharges may include but are not limited to – volume, biochemical oxygen demand (BOD), chemical oxygen demand
(COD), suspended solids, oxidisable matter, chrome, salinity,
toxicity.
Outcome 3
Evaluate methods to minimise and treat tannery waste.
Evidence requirements
3.1
Methods for minimising waste are identified for processes generating high
waste levels and evaluated for fitness for purpose.
Range
3.2
methods include but are not limited to – chemical alternatives,
mechanical alternatives, process optimisation, recycling.
Treatment methods for waste discharges are identified and evaluated in terms
of legislative and by-laws requirements, pollutant types, and tannery resources.
Range
methods may include but are not limited to – sulphide oxidation,
chrome precipitation, screening, grease flotation, balancing, pH
adjustment, sedimentation.
Outcome 4
Develop management systems for the elimination and reduction of tannery wastes.
Evidence requirements
4.1
Systems for sampling and analysing potential pollutants are developed in
accordance with statutory and organisational requirements.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
4.2
8394 version 7
Page 3 of 4
Systems for the sequence and flow of potential pollutants are developed in
accordance with statutory and organisational requirements.
Range
systems may include but are not limited to – sulphide oxidation,
chrome precipitation, screening, grease flotation, balancing, pH
adjustment, sedimentation.
4.3
Systems are developed for monitoring and recording waste treatment and
discharge in accordance with statutory and organisational requirements.
4.4
Damage control systems are developed to cover procedures related to
accidental discharges.
Outcome 5
Manage discharges of tannery wastes.
Evidence requirements
5.1
Results generated by control systems are monitored, and treatment methods
are adjusted to meet statutory and organisational requirements.
5.2
Recording and reporting of waste management data meet statutory and
organisational requirements.
5.3
Resources involved in tannery waste treatment and discharge is managed in
accordance with organisational requirements.
Range
resources include but are not limited to – machinery, equipment,
staff, chemicals.
Outcome 6
Comply with organisational and statutory hygiene and safety requirements.
Evidence requirements
6.1
Company supplied clothing, and hygiene and safety equipment are worn and
used in accordance with organisational and statutory requirements.
6.2
Work methods comply with specified organisational and statutory requirements
to minimise the risk injuries to the operator and others.
6.3
Any unsafe and unhygienic conditions are identified and reported to supervisory
staff in accordance with organisational requirements.
6.4
Equipment, operator and work area cleanliness complies with organisational
and statutory requirements.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
Planned review date
8394 version 7
Page 4 of 4
31 December 2017
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
24 September 1996
31 December 2014
Revision
2
23 March 1999
31 December 2014
Revision
3
20 February 2002
31 December 2014
Revision
4
16 January 2003
31 December 2014
Revision
5
14 October 2004
31 December 2014
Review
6
14 December 2007
31 December 2015
Review
7
21 February 2013
N/A
Consent and Moderation Requirements (CMR) reference
0033
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