Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

NWPHYD001 Mapping and Delivery Guide
Apply principles of open channel hydraulics

Version 1.0
Issue Date: April 2024


Qualification -
Unit of Competency NWPHYD001 - Apply principles of open channel hydraulics
Description
Employability Skills
Learning Outcomes and Application This unit describes the skills required to use hydraulic principles and calculations of theoretical flows. An understanding of the processes required to collect data accurately, interpret data, verify data and apply theoretical techniques to produce flow data is essential to performance.This unit applies to hydrographers employed by the water industry and water operators involved in the monitoring of all the elements of the water cycle and their impact on the related environment.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 relating to WHS, Bureau of Meteorology, World Meteorological Organisation and Australian Standards.Those undertaking this unit would work in small teams, autonomously or under supervision, while performing complex tasks in a broad range of contexts that could be unpredictable, including remote, confined spaces, near water and/or at heights.No licensing, legislative or certification requirements apply to unit at the time of publication.
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.

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.
Prerequisites/co-requisites
Competency Field Hydrography
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities 		Slides
PPT 		Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Select open channel hydraulic methodology
  • Identify monitoring objectives of the site and hydraulic calculation requirements.
  • Select methodology for open channel hydraulic calculations.
  • Identify hydraulic principles used for verification of calculations.
  • Select other methodologies to review initial calculations.
       
Element: Collect and review data for flow calculations
  • Measure and collect appropriate data to calculate theoretical flows based on methodology selected.
  • Determine the hydraulic characteristics of a monitoring site.
  • Measure and collect appropriate data to calculate flows theoretically.
  • Estimate hydraulic coefficients based on observations.
  • Prepare records in a format suitable for dissemination.
  • Review data collected and subsequent calculations for inconsistencies against measured flows.
       
Element: Select the appropriate control structure
  • Select the appropriate control structures based on the characteristics of the open channel and its catchment.
  • Identify and determine the method to calculate flow by using the appropriate formulae for the control structure.
       
Element: Calculate flow in open channels
  • Select and use the appropriate formulae for calculating flows in open channels based on the characteristics of the open channel and its catchment.
  • Identify the limitations of the formulae.
  • Identify factors that would cause variations in the results.
  • Verify results by applying hydraulic principles and other methodologies.
  • Determine the characteristics of open channel pipe flow.
       
Element: Calculate flow from pressure measurements
  • Determine flow-based calculations by using pressure instruments.
  • Make adjustments for absolute pressure instruments to measure head in open channels.
  • Make corrections in pressure measurements to allow for head measurement of salt water.
       
Element: Select open channel hydraulic methodology
  • Identify monitoring objectives of the site and hydraulic calculation requirements.
  • Select methodology for open channel hydraulic calculations.
  • Identify hydraulic principles used for verification of calculations.
  • Select other methodologies to review initial calculations.
       
Element: Collect and review data for flow calculations
  • Measure and collect appropriate data to calculate theoretical flows based on methodology selected.
  • Determine the hydraulic characteristics of a monitoring site.
  • Measure and collect appropriate data to calculate flows theoretically.
  • Estimate hydraulic coefficients based on observations.
  • Prepare records in a format suitable for dissemination.
  • Review data collected and subsequent calculations for inconsistencies against measured flows.
       
Element: Select the appropriate control structure
  • Select the appropriate control structures based on the characteristics of the open channel and its catchment.
  • Identify and determine the method to calculate flow by using the appropriate formulae for the control structure.
       
Element: Calculate flow in open channels
  • Select and use the appropriate formulae for calculating flows in open channels based on the characteristics of the open channel and its catchment.
  • Identify the limitations of the formulae.
  • Identify factors that would cause variations in the results.
  • Verify results by applying hydraulic principles and other methodologies.
  • Determine the characteristics of open channel pipe flow.
       
Element: Calculate flow from pressure measurements
  • Determine flow-based calculations by using pressure instruments.
  • Make adjustments for absolute pressure instruments to measure head in open channels.
  • Make corrections in pressure measurements to allow for head measurement of salt water.
       


Evidence Required

List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.

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. Select open channel hydraulic methodology

1.1 Identify monitoring objectives of the site and hydraulic calculation requirements.

1.2 Select methodology for open channel hydraulic calculations.

1.3 Identify hydraulic principles used for verification of calculations.

1.4 Select other methodologies to review initial calculations.

2. Collect and review data for flow calculations

2.1 Measure and collect appropriate data to calculate theoretical flows based on methodology selected.

2.2 Determine the hydraulic characteristics of a monitoring site.

2.3 Measure and collect appropriate data to calculate flows theoretically.

2.4 Estimate hydraulic coefficients based on observations.

2.5 Prepare records in a format suitable for dissemination.

2.6 Review data collected and subsequent calculations for inconsistencies against measured flows.

3. Select the appropriate control structure

3.1 Select the appropriate control structures based on the characteristics of the open channel and its catchment.

3.2 Identify and determine the method to calculate flow by using the appropriate formulae for the control structure.

4. Calculate flow in open channels

4.1 Select and use the appropriate formulae for calculating flows in open channels based on the characteristics of the open channel and its catchment.

4.2 Identify the limitations of the formulae.

4.3 Identify factors that would cause variations in the results.

4.4 Verify results by applying hydraulic principles and other methodologies.

4.5 Determine the characteristics of open channel pipe flow.

5. Calculate flow from pressure measurements

5.1 Determine flow-based calculations by using pressure instruments.

5.2 Make adjustments for absolute pressure instruments to measure head in open channels.

5.3 Make corrections in pressure measurements to allow for head measurement of salt water.

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 two occasions.

drawing velocity distribution curves for fluids in pipes or channels with both laminar flow and turbulent flow

using data to determine the value of roughness

using simple equations for determining channel friction with their appropriate application

calculating minor energy losses associated with enlargements, contractions and bends

calculating the gradual varied flow profiles in uniform channels when the discharge is known

interpreting and applying technical documentation to the collection, analysis and reporting of hydrographic data

using computer systems

using recording and reporting systems

calculating hydraulic energy gradients

distinguishing the applications and characteristics of notches and weirs, including type of the crest, shape of the notch, crest and conditions

distinguishing the characteristics of open channels including:

types of open channel

steadiness

uniformity

state of open channel flow

laminar

transitional and turbulent flow

critical

subcritical and supercritical flow

types of data (photographic, surveying, long-section and cross-section, topographic maps, historical)

using surveying techniques

identifying types of flows

verifying results by applying hydraulic principles and other methodologies such as using the continuity equation

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.

application of matrix algebra to systems of linear equations

graphical and algebraic methods for solving systems of linear, quadratic, exponential, logarithmic and trigonometric equations

principles of fluid statics, fluid dynamics and hydraulic mechanics

Pascal’s law and hydrostatic effect on submerged surfaces

distinction between laminar and turbulent flow

Hagen–Poiseuille equation

Darcy–Weisbach equation

Bernoulli’s equation

the effect of velocity variation on velocity head

equations for calculating the approximate value of the friction factor, the characteristics of flow through notches/weirs, including the use of these in channel flow measurement

flow conditions including:

laminar flow

turbulent flow

smooth, rough pipe and channel surfaces

full pipe flow

submerged flow conditions

backwater

critical flow

subcritical and supercritical flow

uniform flow

rapidly changing flow

weir and flumes behaviour under various flow conditions

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)

Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

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. Select open channel hydraulic methodology

1.1 Identify monitoring objectives of the site and hydraulic calculation requirements.

1.2 Select methodology for open channel hydraulic calculations.

1.3 Identify hydraulic principles used for verification of calculations.

1.4 Select other methodologies to review initial calculations.

2. Collect and review data for flow calculations

2.1 Measure and collect appropriate data to calculate theoretical flows based on methodology selected.

2.2 Determine the hydraulic characteristics of a monitoring site.

2.3 Measure and collect appropriate data to calculate flows theoretically.

2.4 Estimate hydraulic coefficients based on observations.

2.5 Prepare records in a format suitable for dissemination.

2.6 Review data collected and subsequent calculations for inconsistencies against measured flows.

3. Select the appropriate control structure

3.1 Select the appropriate control structures based on the characteristics of the open channel and its catchment.

3.2 Identify and determine the method to calculate flow by using the appropriate formulae for the control structure.

4. Calculate flow in open channels

4.1 Select and use the appropriate formulae for calculating flows in open channels based on the characteristics of the open channel and its catchment.

4.2 Identify the limitations of the formulae.

4.3 Identify factors that would cause variations in the results.

4.4 Verify results by applying hydraulic principles and other methodologies.

4.5 Determine the characteristics of open channel pipe flow.

5. Calculate flow from pressure measurements

5.1 Determine flow-based calculations by using pressure instruments.

5.2 Make adjustments for absolute pressure instruments to measure head in open channels.

5.3 Make corrections in pressure measurements to allow for head measurement of salt water.

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Identify monitoring objectives of the site and hydraulic calculation requirements. 
Select methodology for open channel hydraulic calculations. 
Identify hydraulic principles used for verification of calculations. 
Select other methodologies to review initial calculations. 
Measure and collect appropriate data to calculate theoretical flows based on methodology selected. 
Determine the hydraulic characteristics of a monitoring site. 
Measure and collect appropriate data to calculate flows theoretically. 
Estimate hydraulic coefficients based on observations. 
Prepare records in a format suitable for dissemination. 
Review data collected and subsequent calculations for inconsistencies against measured flows. 
Select the appropriate control structures based on the characteristics of the open channel and its catchment. 
Identify and determine the method to calculate flow by using the appropriate formulae for the control structure. 
Select and use the appropriate formulae for calculating flows in open channels based on the characteristics of the open channel and its catchment. 
Identify the limitations of the formulae. 
Identify factors that would cause variations in the results. 
Verify results by applying hydraulic principles and other methodologies. 
Determine the characteristics of open channel pipe flow. 
Determine flow-based calculations by using pressure instruments. 
Make adjustments for absolute pressure instruments to measure head in open channels. 
Make corrections in pressure measurements to allow for head measurement of salt water. 
Identify monitoring objectives of the site and hydraulic calculation requirements. 
Select methodology for open channel hydraulic calculations. 
Identify hydraulic principles used for verification of calculations. 
Select other methodologies to review initial calculations. 
Measure and collect appropriate data to calculate theoretical flows based on methodology selected. 
Determine the hydraulic characteristics of a monitoring site. 
Measure and collect appropriate data to calculate flows theoretically. 
Estimate hydraulic coefficients based on observations. 
Prepare records in a format suitable for dissemination. 
Review data collected and subsequent calculations for inconsistencies against measured flows. 
Select the appropriate control structures based on the characteristics of the open channel and its catchment. 
Identify and determine the method to calculate flow by using the appropriate formulae for the control structure. 
Select and use the appropriate formulae for calculating flows in open channels based on the characteristics of the open channel and its catchment. 
Identify the limitations of the formulae. 
Identify factors that would cause variations in the results. 
Verify results by applying hydraulic principles and other methodologies. 
Determine the characteristics of open channel pipe flow. 
Determine flow-based calculations by using pressure instruments. 
Make adjustments for absolute pressure instruments to measure head in open channels. 
Make corrections in pressure measurements to allow for head measurement of salt water. 

Forms

Assessment Cover Sheet

NWPHYD001 - Apply principles of open channel hydraulics
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Assessment Record Sheet

NWPHYD001 - Apply principles of open channel hydraulics

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