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 mechanical drawings which detail fasteners and locking devices.

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

produce drawings to AS 1100.101–1992 Technical drawing – General principles, detailing fasteners and locking devices.

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

using computer technologies and navigating software

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

applying spatial principles to achieve scale and proportion

interpersonal skills to consult with other disciplines

drafting skills

applying symbols, schedules and legends to the drawing

arranging the views in a logical manner and in accordance with AS 1100.101–1992 Technical drawing – General principles

correctly using line thickness and construction to identify parts

using correct method for identifying thread forms on detail and assembly drawings

using engineering and manufacturer catalogues, tables, standards and specifications

filing drawings according to workplace procedures

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

order of drawing process

company checking procedures for drawings

layout and presentation

the standards applicable to the work to be undertaken

the process of checking the completed drawing

the process of storing paper drawings and electronic drawing files

the International System of Units (SI)

the different types of fasteners used in the manufacture of an engineering project

lubrication components and systems and lubricants

terminology associated with the preparation of mechanical drawings

different types of thread forms, types and sizes

types of nuts and uses for locking purposes

manufacturing processes required to create a drilled and tapped hole and a threaded feature

grades of bolts and their applications

Available information

Available information may include:

construction documents

building and coordination information

work specifications

information for plant services equipment

industry codes, standards and regulations

design brief

Fasteners

Fasteners may include:

any mechanical device for joining or affixing two or more components together, such as:

bolts, machine screws, screws, nuts, washers, rivets, locating devices, circlips and masonry anchors

threaded fastening devices:

bolts

hex head

square head

carriage

countersunk square neck

machine screws:

square head

hex. head

round head

countersunk head

cheese head

pan head

raised head countersunk

set screws:

square head

hex. socket

spline socket

slotted (screwdriver)

studs

self tapping screws

drive screws

cap screws:

hex. socket

spline socket

hex. socket countersunk

nuts

square

hex

slotted

castle

cap or acorn

wing

ring

thread types (metric - imperial)

sizes

grades

thread forms:

vee

square

acme

buttress

round

rivets:

button head

high button

cone head

pan head

flat-top countersunk head

round-top countersunk head

swell neck

pop rivets

huck bolts

cotter pins (split pins)

circlips:

internal

external

round

snap

masonry anchors:

loxin

dynabolt

ramset

Mechanical location devices

Mechanical location devices may include:

pins:

dowel pins

taper pins

split taper pins

split pins (roll pin)

grooved pins

keys and keyseats:

parallel

plain taper

gibhead taper

feather

saddle

round

scotch

woodruff (full radius/flat bottom)

Locking devices

Locking devices may include:

lock nuts (double nuts)

nyloc nuts

split nuts

deformed

washers:

plain washers

tab washers

tapered washers

internal tooth lockwashers

external tooth lockwashers

internal and external lockwashers

split spring washers

double coil spring washers

wiring

chemical methods of thread locking

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