Assessor Resource

NWP277A
Work safely with liquefied chlorine gas

Assessment tool

Version 1.0
Issue Date: April 2024


This unit supports the attainment of skills and knowledge required for operational staff with specific responsibility for disconnecting and connecting liquefied chlorine gas containers in water and wastewater treatment plants.

This unit of competency describes the outcomes required to work safely with liquefied chlorine gas, including the safe changeover of gas containers; safe transport, handling and storage of liquefied chlorine gas containers; and implementation of emergency procedures.

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

Prerequisites

Not applicable.

Employability Skills

This unit of competency 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, the range statement and the Assessment Guidelines for the Training Package.

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

The candidate should demonstrate the ability to changeover liquefied chlorine gas containers safely and correctly, including:

correctly selecting, fitting and using PPE, including air-supplied self-contained breathing apparatus

implementing relevant Australian standards, MSDS requirements and other legislative and organisational requirements as applicable

correctly transporting, handling and storing liquefied chlorine gas containers

correctly disconnecting liquefied chlorine gas containers

correctly connecting liquefied chlorine gas containers

implementing emergency procedures relating to liquefied chlorine gas hazards.

Context of and specific resources for assessment

Access to the workplace and resources including:

documentation that should normally be available in a water industry organisation

relevant codes, standards and government regulations.

Where applicable, physical resources should include equipment modified for people with disabilities.

Access must be provided to appropriate learning and assessment support when required.

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

Validity and sufficiency of evidence requires that:

competency will need to be demonstrated over a period of time reflecting the scope of the role and the practical requirements of the workplace

where the assessment is part of a structured learning experience the evidence collected must relate to a number of performances assessed at different points in time and separated by further learning and practice

a decision of competence only taken at the point when the assessor has complete confidence in the person's competence over time and in various contexts

all assessment that is part of a structured learning experience must include a combination of direct, indirect and supplementary evidence

where assessment is for the purpose of recognition (RCC/RPL), the evidence provided will need to be authenticated and show that it represents competency demonstrated over a period of time

assessment can be through simulated project-based activity and must include evidence relating to each of the elements in this unit.

Questioning will be undertaken in a manner appropriate to the skill levels of the operator and cultural issues that may affect responses to the questions, and will reflect the requirements of the competency 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.

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

Required skills:

access, interpret and apply relevant legislative and organisational requirements

access, interpret and apply safety procedures

identify and report hazards

apply first aid procedures according to job requirements

select and use personal protective equipment

use tools and equipment

apply correct liquefied chlorine gas container procedures relating to:

transport, handling and storage

disconnection

connection

perform work-related calculations

operate a vacuum chlorinator safely during disconnection and reconnection procedures

interpret material safety data sheets (MSDS)

work effectively as part of a team

complete records and logs

use literacy skills in regard to verbal and written communication in the workplace

communicate effectively in the workplace.

Required knowledge:

personal protective equipment and its application

emergency equipment and its application

properties of liquefied chlorine gas

basic function and components of vacuum chlorinator systems

hazards of liquefied chlorine gas handling

relevant MSDS

procedures for liquefied chlorine gas container:

transport, handling and storage

disconnection

connection

maintenance procedures for personal protective equipment.

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. Add any 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.

Procedures may include:

transport and handling of liquefied chlorine gas containers

liquefied chlorine gas container disconnection procedures

liquefied chlorine gas container connection procedures

storage of liquefied chlorine gas cylinders or drums.

Legislative and organisational requirements may include:

AS/NZS 2927 The storage and handling of liquefied chlorine gas

MSDS for liquefied chlorine gas

relevant federal and state or territory legislation and regulations

codes of practice, associated standards and guidance material

documented organisational policies, manuals and induction programs

relevant community planning and development agreements, such as land care agreements.

Tools and equipment may include:

wire brush

valve key.

First aid provisions may include:

cardiopulmonary resuscitation (CPR) instructions

safety shower

eyewash.

Appropriate personal protective equipment (PPE) may include:

protective clothing

safety footwear

chemical resistant gloves

air-supplied self-contained breathing apparatus.

Correct storage area may include:

indoor or shaded outdoor compound at treatment site or depot.

Disconnection procedures may include:

chlorinator shutdown and isolation

purging operations

leak testing.

Connection procedures may include:

component replacement

chlorinator start-up

leak testing

stand-by settings.

Emergency procedures may include:

raising alarm

contacting appropriate personnel

isolating liquefied chlorine gas containers

evacuation 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
Check work procedures and instructions for compliance with current legislative and organisational requirements. 
Check hazard signage for compliance with organisational requirements. 
Select and check tools and equipment required to ensure that safety requirements of task and site are met. 
Check first aid provisions for potential liquefied chlorine gas exposure hazards for compliance with organisational requirements. 
Select, fit and use appropriate personal protective equipment. 
Obtain liquefied chlorine gas containers from the correct storage area and handle them according to organisational requirements. 
Conduct disconnection procedures according to organisational requirements. 
Conduct connection procedures according to organisational requirements. 
Transport depleted containers to correct storage area according to organisational requirements. 
Check and store tools and equipment according to organisational procedures. 
Locate and understand emergency procedures. 
Follow safe workplace procedures for emergency situations within scope of responsibilities. 

Forms

Assessment Cover Sheet

NWP277A - Work safely with liquefied chlorine gas
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

NWP277A - Work safely with liquefied chlorine gas

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: