NWPNET014
Perform odour and infiltration investigations


Application

This unit describes the skills required to investigate and report on odour and infiltration problems in the wastewater collection and transfer systems. The ability to investigate and resolve wastewater system problems, operate technical equipment and prepare technical reports is essential to performance.

This unit applies to those working as field and operational staff with a specific responsibility for ensuring that odour and infiltration problems in wastewater collection and/or transfer systems are identified and remedied.

The skills and knowledge described in this unit must be applied within the legislative, regulatory and policy environment in which they are carried out. Organisational policies and procedures must be consulted and adhered to, particularly those related to WHS.

Those undertaking this unit would work under indirect supervision, while performing routine tasks in a familiar context, ensuring minimum damage to the environment.

No licensing, legislative or certification requirements apply to unit at the time of publication.


Elements and Performance Criteria

ELEMENTS

PERFORMANCE CRITERIA

Elements describe the essential outcomes

Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the range of conditions section.

1. Plan for leak detection

1.1 Determine work site boundaries and leak detection requirements from plans, specifications and instructions.

1.2 Select and check equipment.

1.3 Use site inspection and service search diagrams according to work site requirements.

2. Operate leak detection equipment and report work

2.1 Determine and mark work site boundaries from plans and service search diagrams.

2.2 Select, fit and use personal protective equipment.

2.3 Operate leak detection equipment.

2.4 Mark the location of leaks.

2.5 Expose leaks and arrange repair according to testing outcomes and organisational and statutory requirements.

2.6 Review, record and report work.

Evidence of Performance

Evidence required to demonstrate competence must satisfy all of the requirements of the elements and performance criteria. If not otherwise specified the candidate must demonstrate evidence of performance of the following on at least one occasion.

using safety equipment and personal protective equipment

interpreting plans, service diagrams, charts, specifications, policies, standard operating procedures and plumbing and drainage standards

monitoring inflows

operating computerised equipment

identifying control system faults

investigating and reporting on odour and infiltration problems in the wastewater collection and transfer systems

inspecting and selecting tools and equipment

scheduling inspections

collecting and recording wastewater samples

investigating and reporting odour sources

integrating processes

managing flow regulations, diversions and isolation of the site

identifying, addressing and reporting illegal inflows or discharges

reviewing and addressing investigation results

completing required documentation


Evidence of Knowledge

Evidence required to demonstrate competence must satisfy all of the requirements of the elements and performance criteria. If not otherwise specified the depth of knowledge demonstrated must be appropriate to the job context of the candidate.

system hydraulics

monitoring processes

system layout, processes, operation

environmental aspects of wastewater collection systems and infrastructure

infiltration and inflow sources

policies, standard operating procedures and legislation

relevant utilities and service bodies

communication systems

environment, landscape and ground structure of work area

risk factors and potential hazards involved in wastewater collection systems equipment operation, capacity and limitations

effects of weather and conditions on operation of collection infrastructure

pipes and fittings

pumping and valving systems

gravity and control systems


Assessment Conditions

Competency should be assessed in an actual workplace or in a simulated environment, with access to equipment and infrastructure appropriate to the outcome. Competency should be demonstrated over time to ensure the candidate is assessed across a variety of situations.

Assessors must satisfy the NVR/AQTF mandatory competency requirements for assessors.


Foundation Skills

The foundation skills demands of this unit have been mapped for alignment with the Australian Core Skills Framework (ACSF). The following tables outline the performance levels indicated for successful attainment of the unit.

Further information on ACSF and the foundation skills underpinning this unit can be found in the Foundation Skills Guide on the GSA website.


Competency Field

Networks