Assessor Resource

PMC552007B
Heat accelerate the curing of precast concrete

Assessment tool

Version 1.0
Issue Date: March 2024


This unit of competency applies to operators who are responsible for steam curing of precast concrete pipes and other concrete products. This unit of competency also includes operation of all ancillary equipment.

This unit of competency is typically performed by operators working either independently or as part of a work team.

This unit of competency covers high and low pressure steam curing of precast concrete pipes and other concrete products. It involves preparing, operating and monitoring equipment, resolving routine problems and preparing equipment for maintenance.

You may want to include more information here about the target group and the purpose of the assessments (eg formative, summative, recognition)

Employability Skills

This unit contains employability skills.




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

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.

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

It is essential that the equipment and the process be understood and that the importance of critical settings and readings are known.

Competence must be demonstrated in the ability to recognise and analyse potential situations requiring action and then in implementing appropriate corrective action.

Consistent performance should be demonstrated. In particular look to see that:

startup and shutdown procedures are applied without variation

signals and alarms are responded to immediately

isolation procedures for maintenance are followed

all OHS requirements are followed.

Competence must be demonstrated in the operation of all ancillary equipment to the level required for this unit of competency.

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.

Assessment will occur over a range of situations which will include disruptions to normal, smooth operation.

Simulation or case studies/scenarios may be required to allow for timely assessment of parts of this unit of competency. Simulation should be based on the actual plant and will include 'walk-throughs' of the relevant competency components. A bank of scenarios/case studies/what ifs and questions will be required to probe the reasoning behind observable actions.

Method of assessment

Individual enterprises may choose to add prerequisites and co-requisites relevant to their processes.

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, assingnment, 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:

recognising conditions which will lead to out of specification product

implementing the enterprise's procedures within time constraints and in a manner relevant to the correct use of the equipment

conveying information relevant to the operation clearly and effectively

maintaining appropriate levels of quality assurance

reading and numeracy to interpret workplace documents and technical information

Required knowledge

required knowledge includes:

isolation procedures

steam hazards

operational processes and functions, including start up and shut down processes

composition and nature of finished product

construction and limitations of the equipment

out of specification situations

types of defects/faults

underlying causes of faults such as precipitated by:

electrical/instrumental failures

steam pressure differentials

time cycle irregularities

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.

Procedures

All operations are performed in accordance with standard procedures and work instructions.

Operation of steam chambers

This unit includes the operation of various steam chambers for the curing of concrete products and pipes and may include:

purpose built, low pressure steam chambers

autoclaves (high or low pressure)

temporary means of retaining low pressure steam near the curing concrete product

Variations

Variations include:

nature and type of plant configuration

nature of curing process (e.g. hot water, low pressure steam, high pressure steam, autoclaving)

nature and type of steam chamber (e.g. tarpaulin cover, steam chamber and autoclave)

nature and type of product to be cured

safe work practices and the use of protective clothing, hard hats and safety glasses

Checking equipment

Checking equipment includes:

chamber doors and locking equipment

transfer cars to fill chambers

steam and pressure generation equipment

pressure and temperature gauges

Equipment

Equipment may include:

instruments and PLCs but not control panels

measuring and/or recording equipment

communication equipment

tarpaulins used to cover concrete

Typical problems

Typical problems may include:

equipment malfunctions

temperature or pressure fluctuations

product quality variations

material/feed variations

chamber pressure losses

Occupational health and safety (OHS)

All operations are subject to stringent OHS requirements and these must not be compromised at any time. Where there is an apparent conflict between performance criteria and OHS requirements, the OHS requirements take precedence

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
Conduct equipment pre-startup procedure and visual checks according to enterprise procedures 
Set up and configure equipment startup function in accordance with procedures/work instructions 
Ensure appropriate presetting period has been observed 
Load mould (containing green concrete product) onto transfer car and move to steam chamber in accordance with procedures/work instructions 
Cover mould as specified 
Close and secure the steam chamber in accordance with procedures/work instructions 
Start up equipment in accordance with procedures/work instructions 
Ensure equipment is operated in accordance with established enterprise procedures 
Monitor equipment performance in accordance with work instructions and manufacturer's specifications 
Monitor operating pressures and temperatures 
Ensure the rate at which the concrete temperature increases is even, and that it doesn't exceed maximum temperature specified 
Adjust and control equipment to ensure correct product quality 
Complete appropriate records and logs 
Identify the range of faults that can occur during the operation 
Determine and rectify fault causes by procedures/work instructions 
Identify and rectify equipment failure causes in accordance with procedures/work instructions 
Ensure appropriate records and log books of equipment operations are maintained to meet procedures/work instructions 
Identify non-routine problems and report to designated person 
Shut down steam and depressurise chamber in accordance with work instructions 
Allow product to cool gradually and evenly 
Open the chamber and discharge cured product 
Complete appropriate records and logs 
Ensure transfer cars are clear of all product and left ready for reuse 
Shut down equipment in an emergency situation 
Isolate equipment in accordance with work instructions 
Remove any broken materials safely 
Make sure area is clear and safe for maintenance 
Identify hazards from the job to be done 
Identify other hazards in the work area 
Assess the risks arising from those hazards 
Implement measures to control those risks in line with procedures 

Forms

Assessment Cover Sheet

PMC552007B - Heat accelerate the curing of precast concrete
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

PMC552007B - Heat accelerate the curing of precast concrete

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: