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

MEM23139A Mapping and Delivery Guide
Design a basic single zone duct distribution system

Version 1.0
Issue Date: May 2024


Qualification -
Unit of Competency MEM23139A - Design a basic single zone duct distribution system
Description This unit of competency covers the skills and knowledge required to use air flow and distribution principles used in heating, ventilation, air conditioning and refrigeration (HVAC/R) systems and to identify different system configurations to design a single, one-air distribution system and service related system components.
Employability Skills This unit contains employability skills.
Learning Outcomes and Application The unit applies to the design of single, one-air distribution system and service-related system components, including meeting environmental and cost control requirements. The unit may be applied to individuals working alone or as part of a design team. The unit is suitable for people working as supervisors, technicians and HVAC/R draftspersons, and those pursuing manufacturing engineering or related technical qualifications and careers.
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.
Prerequisites/co-requisites MEM23004A Apply technical mathematics MEM23006A Apply fluid and thermodynamics principles in engineering MEM30031A Operate computer-aided design (CAD) system to produce basic drawing elementsMEM30033A Use computer-aided design (CAD) to create and display 3-D models
Competency Field
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: Determine design specification for basic single zone duct distribution system
  • Obtain and implement work health and safety (WHS) and environmental requirements for a given work area
  • Determine design requirements for the single zone duct distribution system from customer requirements, job specifications, and briefings or discussions with appropriate personnel
  • Identify and interpret relevant codes and standards
  • Prepare final specifications for the design and obtain relevant approvals
  • Identify sources of professional and technical assistance
  • Establish coordination and contingency management requirements of design work with other HVAC/R and building systems team members
  • Obtain resources required for the design task in accordance with enterprise procedures
       


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.

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

A person who demonstrates competency in this unit must be able to design basic single zone duct distribution systems to meet customer requirements, including cost specifications, and WHS and other regulatory requirements.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessors must be satisfied that the candidate can competently and consistently:

implement WHS workplace procedures and practices, including risk control measures

design basic single zone duct distribution systems to customer performance and cost requirements

select and size appropriate components, including fans and duct work

communicate technical requirements to others, including preparation of required drawings, CAD files and reports.

Context of and specific resources for assessment

This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations.

The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate.

Method of assessment

Assessment must satisfy the endorsed Assessment Guidelines of the MEM05 Metal and Engineering Training Package.

Assessment methods must confirm consistency and accuracy of performance (over time and in a range of workplace relevant contexts) together with application of underpinning knowledge.

Assessment methods must be by direct observation of tasks and include questioning on underpinning knowledge to ensure correct interpretation and application.

Assessment may be applied under project-related conditions (real or simulated) and require evidence of process.

Assessment must confirm a reasonable inference that competency is not only able to be satisfied under the particular circumstance, but is able to be transferred to other circumstances.

Assessment may be in conjunction with assessment of other units of competency where required.

Guidance information for assessment

Assessment processes and techniques must be culturally appropriate and appropriate to the language and literacy capacity of the candidate and the work being performed.

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.

Required skills

Required skills include:

selecting air-diffusion

sizing the system

selecting fans

designing duct work

applying cost controlling strategies

using 3-D CAD systems effectively

interpreting drawings and specifications

communicating effectively with others

working in teams with others

communicating technical and procedural requirements to others

dealing effectively with unexpected situations

Required knowledge

Required knowledge includes:

differentiation between static, velocity and total pressure in air distribution ducts

laminar and turbulent flow

use of Moody diagram for flow rate and pressure drop

friction and dynamic pressure loss

Colebook-White formula

sources of heat and pressure leakage and loss calculation

noise minimisation

fan laws

control cost parameters

duct design parameters, including:

standard duct sizes and gauges

available access and space

system performance requirements

system sizing and balancing methods

dual and single duct constant volume air systems

variable volume air system

multi-zone systems

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

WHS requirements

WHS requirements include:

relevant legislation

protective equipment

material safety management systems, including use of material safety data sheets (MSDS)

hazardous substances and dangerous goods code

local safe operation procedures

WHS provisions in relevant awards and agreements

Environmental requirements

Environmental requirements include:

relevant legislation, regulations and codes

correct handling and disposal of liquid and solid waste

elimination or minimisation of gas, fume, vapour and smoke emissions, including fugitive emissions

dust elimination, minimisation and control

minimisation of energy and water use

elimination or control of excessive noise

use and recycling of refrigerants

Single zone duct distribution system

A single zone duct distribution system is a basic central system which can supply a constant air volume or a variable air volume at low, medium or high pressure through a single duct

Appropriate personnel

Appropriate personnel may include:

supervisor

leading hand

foreman

manager

engineer

technician

trainer

mentor

team member

customer

client

Enterprise procedures

Enterprise procedures may include:

use of tools and equipment

operating instructions, including job sheets, plans, drawings and designs

reporting and communication

manufacturer specifications

site operational procedures

references to industry standards

Resources

Resources may include:

reference manuals

scientific calculator

3-D CAD software

computer workstation and software, either stand alone or networked

test apparatus

appropriate tools of trade, equipment and materials

standard duct sizes and gauges

Contingencies and unexpected situations

Contingencies and unexpected situations that arise during the course of the design process may include:

cost or time overruns

unavailability of required components

changes in customer requirements after design process has started

regulatory change

site or building features not on plans or drawings

other situations not included in customer brief or normal enterprise procedures

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
Obtain and implement work health and safety (WHS) and environmental requirements for a given work area 
Determine design requirements for the single zone duct distribution system from customer requirements, job specifications, and briefings or discussions with appropriate personnel 
Identify and interpret relevant codes and standards 
Prepare final specifications for the design and obtain relevant approvals 
Identify sources of professional and technical assistance 
Establish coordination and contingency management requirements of design work with other HVAC/R and building systems team members 
Obtain resources required for the design task in accordance with enterprise procedures 

Forms

Assessment Cover Sheet

MEM23139A - Design a basic single zone duct distribution system
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

Feedback to student

 

 

 

 

 

 

 

 

Assessor name:

Signature:

Date:

Assessment Record Sheet

MEM23139A - Design a basic single zone duct distribution system

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

Date: