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 interpret and apply drawing specifications and industry standards in the production of installation drawings for the mechanical services industry.

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

Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts.

Specifically the candidate must be able to:

work within typical site/teamwork structures and methods

apply worksite communication procedures

comply with organisational policies and procedures, including quality requirements

participate in work meetings

comply with quality requirements

use industry terminology

apply appropriate safety procedures

demonstrate industry knowledge, including:

industry size, scope of work and economic issues

relevant industrial awards and enterprise agreements

relevant legislative provisions covering discrimination and equal employment opportunity

identify features and uses of componentry and system elements for mechanical services and requirements for documenting on detail drawings

produce industry standard detail drawings for mechanical services industry.

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, that is the candidate is not in productive work, 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.

Where applicable, reasonable adjustment must be made to work environments and training situations to accommodate ethnicity, age, gender, demographics and disability.

Access must be provided to appropriate learning and/or assessment support when required. Where applicable, physical resources should include equipment modified for people with disabilities.

This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with drafting or other units requiring the exercise of the skills and knowledge covered by this unit.

Method of assessment

Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways, including direct observation, supervisor's reports, project work, samples and questioning. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit of competency. The candidate must have access to all tools, equipment, materials and documentation required. The candidate must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials.

Required skills

Required skills include:

literacy skills sufficient to read and interpret instructions, relevant codes of practice and specifications for drawing work

numeracy skills sufficient to interpret technical information and conduct mathematical problem solving as required in the scope of this unit

using and maintaining drawing equipment

interpersonal skills to consult with other disciplines

applying drafting skills, drawing techniques and conventions

applying codes, symbols and drawing protocols for mechanical services drawings

applying spatial principles to achieve scale and proportion

determining and applying operating principles of system equipment to drawing work

solving problems in order to meet requirements of given specifications

using drafting equipment appropriate to the drawing method chosen

recording completed drawings in accordance with industry standards and practices

handling and storing the approved drawings in accordance with standard operating procedures

preparing drawing presentation in a manner that makes information accessible and complete

filing drawings according to workplace procedures

evaluating work and identifying areas for improvement

Required knowledge

Required knowledge includes:

general knowledge of different approaches to drawing

awareness of copyright and intellectual property issues and legislation in relation to drawing

environmental and OHS issues associated with the tools and materials used for drawing

quality assurance procedures

company standards for CAD, duct and pipe

order of drawing process

company checking procedures for drawings

layout and presentation

operating principles of pressure and temperature measurement devices

operating principles of heating and cooling system equipment

operating principles of air conditioning equipment

operating principles of exhaust systems

operating principles of refrigeration equipment

Available information

Available information may include:

floor plans, elevations, sections and site layout drawings

construction documents

building and coordination information

work specifications

information for plant services equipment

industry codes, standards and regulations

design brief

Industry standards

Industry standards may include, but are not limited to:

Building Codes of Australia (BSA)

Australian Standards (AS)

legislation requirements from Building Practitioner's Board (RBP)

Australian Gas Codes (AGC)

Sheet Metal and Air Conditioning Contractors National Association (SMACNA)

third-party manufacturing and installation standards

company standards

guidelines

general practices

Codes, standards and industry regulations

Codes, standards and industry regulations may include:

AS/NZS 1668 Set:2005 The use of ventilation and air conditioning in building Set

AS 1682.1–1990 Fire dampers – Specification

AS 4254–2002 Ductwork for air-handling systems in buildings

building codes

gas, water and electricity regulations

OHS codes of practice

Heating and cooling systems and equipment

Heating and cooling systems and equipment may include:

boilers

clarifiers

heat exchanges

coils

centrifugal chillers

cooling towers

pumps

valves

auto refill units

expansion tanks

pipe work systems

Pressure and temperature measurement devices

Pressure and temperature measurement devices may include:

humidistat

thermostat

Air conditioning equipment

Air conditioning equipment may include:

fans

air filtration units

heating systems

cooling systems

ducts, grilles

diverters

diffusers

dampers

humidifier/dehumidifier

exhaust hoods

Exhaust systems

Exhaust systems may include:

kitchen

fume

dust

smoke

toilet and car park systems

Refrigeration equipment

Refrigeration equipment may include:

refrigeration compressors

condensers

evaporative condensers

pumps

Standard drawing conventions

Standard drawing conventions may include:

use of correct sectioning technique

identification of cutting plane

accurate line types

appropriate view positions

use of correct symbols

use of correct dimensioning technique

provision of suitable number of views

use of correct scales

neat presentation

Appropriate personnel

Appropriate personnel may include:

designer

engineer

supervisor

contractor/consultant

builder

Support services

Support services may include:

estimating department and personnel

engineering department and personnel

drafting department and personnel

project manager

factory manager or staff