Assessment Requirements for NWPHYD001 Apply principles of open channel hydraulics

Release: 1

Assessment Requirements for NWPHYD001 Apply principles of open channel hydraulics

Modification History

Release	Comments
1	These Assessment Requirements were released in NWP Water Training Package release 1.0 and meet the Standards for Training Packages. Assessment Requirements created drawing upon specified assessment information from superseded unit

Performance Evidence

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

Knowledge Evidence

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

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.

Links

GSA website - http://www.govskills.com.au

NWP Implementation Guide - http://www.govskills.com.au/guides/water/implementation-guide

NWP Assessment Guide - http://www.govskills.com.au/guides/water/assessment-guide

NWP Knowledge Guide - http://www.govskills.com.au/guides/water/knowledge-guide