This describes the essential skills and knowledge and their level required for this unit

Required skills

This competency includes the following skills

analysis

selection

discrimination

maths

Required knowledge

Competence in this unit includes the following knowledge

chemistry of raw materials

material safety data sheets

aware of OHS requirements

calculate the molecular weight of a polymer to determine the effects on the end product

polymers used in surface coatings and their impact of the surface coating properties and applications

the importance and impact of polymer functional groups

properties and applications of resins

the manufacturing techniques of alkyd resins

the effects of additives on the final properties of surface coatings

safety and environmental concerns in the use and handling of solvents

glass transition temperature of polymers and film forming mechanisms

the principles of emulsion polymerisation

the different types of resins used in the surface coatings

the effects of additives on the final properties of surface coatings

the role and behaviour of solvents

the process of solvent evaporation used in formulating

the functions of pigments

reasons for the use of inorganic and organic pigments

key differences between organic and inorganic pigments

the performance properties of TiO pigments

the use of anti corrosive pigments

the role and properties of extenders

overall the reasons for the selection of raw materials when used in surface coatings

The Evidence Guide provides advice on assessment and must be read in conjunction with the Performance Criteria Required Skills and Knowledge the Range Statement and the Assessment Guidelines for the Training Package

Overview of assessment

Assessment of this unit should include demonstrated competence on actual plant and equipment in a work environment The unit will be assessed in as holistic a manner as is practical and may be integrated with the assessment of other relevant units of competency Assessment will occur over a range of situations which will include disruptions to normal smooth operation

Simulation may be required to allow for assessment of parts of this unit Simulation should be based on the actual plant and will include walkthroughs of the relevant competency components Simulations may also include the use of case studiesscenarios and role plays

This unit of competency requires a significant body of knowledge which will be assessed through questioning and the use of whatif scenarios both on the plant during demonstration of normal operations and walkthroughs of abnormal operations and off the plant

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

Competence must be demonstrated in the ability to formulate an appropriate surface coating using correct raw materials In particular

correct selection and detailed use of relevant raw materials

formulate a coating to customers requirements

understand the use of raw materials

describe the impact of certain raw materials on the environment

Context of and specific resources for assessment

Assessment will require access to an operating plant over an extended period of time or a suitable method of gathering evidence of operating ability over a range of situations A bank of scenarioscase studieswhatifs will be required as will a bank of questions which will be used to probe the reasoning behind the observable actions

Method of assessment

In all plants it may be appropriate to assess this unit concurrently with other relevant units

Guidance information for assessment

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

Codes of practice/ standards

Context

Surface coating resins

Characteristics and uses of resins

Surface coating additives

Characteristics and uses of additives

Procedures

Health, safety and environment (HSE)