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Evidence Guide: AHCEXP303A - Prepare and use explosives

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

AHCEXP303A - Prepare and use explosives

What evidence can you provide to prove your understanding of each of the following citeria?

Prepare for blasting

  1. Permits/ licences are obtained and approved warning signs installed and prominently displayed according to legislative requirements.
  2. Property manager and relevant controlling authorities are notified of blasting plans and timing as required by legislation.
  3. The area where the charges are to be used is cleared of stones and other potential missiles.
  4. The blast site is cleared and made safe prior to charges being placed.
  5. All explosive products are placed at the required safety distance from any identified hazards.
  6. Appropriate holes are drilled/dug to place the charge(s) in line with blasting plans.
  7. Drilling/digging equipment is removed to the prescribed safe distance in accordance with Australian Standards, Acts and Regulations.
  8. Neighbours and members of the public likely to be concerned or disturbed by shock effects are advised of the blasting program.
Permits/ licences are obtained and approved warning signs installed and prominently displayed according to legislative requirements.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Property manager and relevant controlling authorities are notified of blasting plans and timing as required by legislation.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

The area where the charges are to be used is cleared of stones and other potential missiles.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

The blast site is cleared and made safe prior to charges being placed.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

All explosive products are placed at the required safety distance from any identified hazards.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Appropriate holes are drilled/dug to place the charge(s) in line with blasting plans.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Drilling/digging equipment is removed to the prescribed safe distance in accordance with Australian Standards, Acts and Regulations.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Neighbours and members of the public likely to be concerned or disturbed by shock effects are advised of the blasting program.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare explosives

  1. Quantities of explosives components required are calculated to match the application and prevailing conditions.
  2. Required explosives are assembled on site, or an explosives mix (of homogenous composition) is calculated precisely to ensure minimum residual mix to be destroyed, and is prepared in accordance with defined requirements.
  3. Required fusing and detonating components are assembled to match the established explosive requirements in preparation for blasting.
Quantities of explosives components required are calculated to match the application and prevailing conditions.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Required explosives are assembled on site, or an explosives mix (of homogenous composition) is calculated precisely to ensure minimum residual mix to be destroyed, and is prepared in accordance with defined requirements.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Required fusing and detonating components are assembled to match the established explosive requirements in preparation for blasting.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Place charges

  1. Explosives elements are placed in holes or packed using safe working procedures and methods and in accordance with Australian Standards, Acts and Regulations.
  2. All holes are stemmed and tamped prior to the attachment of the firing system to maximise safety to all personnel and the efficiency of the blasting.
  3. Electrical firing circuits or fire fuses are checked for continuity and/or earthing as required.
  4. All extraneous materials are cleared from the site to safe distances in accordance with enterprise standards.
  5. Routine re-checks of the site and surrounds are performed to ensure that no non-essential personnel are endangered.
  6. Blasting mats or other control devices are placed as appropriate according to the blasting plan.
  7. Blast area is guarded according to legislative requirements and enterprise practices.
Explosives elements are placed in holes or packed using safe working procedures and methods and in accordance with Australian Standards, Acts and Regulations.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

All holes are stemmed and tamped prior to the attachment of the firing system to maximise safety to all personnel and the efficiency of the blasting.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Electrical firing circuits or fire fuses are checked for continuity and/or earthing as required.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

All extraneous materials are cleared from the site to safe distances in accordance with enterprise standards.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Routine re-checks of the site and surrounds are performed to ensure that no non-essential personnel are endangered.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Blasting mats or other control devices are placed as appropriate according to the blasting plan.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Blast area is guarded according to legislative requirements and enterprise practices.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Fire charges

  1. Prescribed warning notification procedures are carried out in accordance with enterprise and industry standards.
  2. The blasting site is re-checked to ensure correct placement of explosives and ensure that all safety procedures have been implemented according to supervisor or shot firer's instructions.
  3. Warning signals including audible and visual signals are issued to ensure that the site is clear.
  4. Firing procedures are initiated through manual or electric firing systems.
Prescribed warning notification procedures are carried out in accordance with enterprise and industry standards.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

The blasting site is re-checked to ensure correct placement of explosives and ensure that all safety procedures have been implemented according to supervisor or shot firer's instructions.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Warning signals including audible and visual signals are issued to ensure that the site is clear.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Firing procedures are initiated through manual or electric firing systems.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Conduct post-firing procedures

  1. Charges are counted as they fire or are inspected safely post blasting to ensure that misfires are readily identified prior to all clear signals being given.
  2. Misfire procedures are implemented after prescribed timing and/or practice drills conducted using water jets or additional charges in accordance with Australian Standards, Acts and Regulations.
  3. Site checks are carried out to ensure that the site is safe and the all-clear signal is given in line with industry practice and legislative requirements.
  4. Surplus, unserviceable and defective explosives and detonators are destroyed or discarded or stored in line with prescribed procedures and in consideration of the environmental impact.
  5. Accurate records are completed and kept in line with enterprise and legislative requirements.
Charges are counted as they fire or are inspected safely post blasting to ensure that misfires are readily identified prior to all clear signals being given.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Misfire procedures are implemented after prescribed timing and/or practice drills conducted using water jets or additional charges in accordance with Australian Standards, Acts and Regulations.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Site checks are carried out to ensure that the site is safe and the all-clear signal is given in line with industry practice and legislative requirements.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Surplus, unserviceable and defective explosives and detonators are destroyed or discarded or stored in line with prescribed procedures and in consideration of the environmental impact.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Accurate records are completed and kept in line with enterprise and legislative requirements.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

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

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

The evidence required to demonstrate competency in this unit must be relevant to workplace operations and satisfy holistically all of the requirements of the performance criteria and required skills and knowledge and include achievement of the following:

obtain the appropriate permits and licenses for blasting

inform neighbours and post notices for blasting

prepare the blast site to place the explosive

prepare explosives and the initiator device according to best safety practice and regulations

place and fire charges according to best safety practice and regulations

conduct post-firing procedures for misfires, site checks, the disposal of surplus, unserviceable and defective explosives, and recording procedures.

Context of and specific resources for assessment

Competency requires the application of work practices under work conditions. Selection and use of resources for some worksites may differ due to the regional or enterprise circumstances.

Required Skills and Knowledge

Required skills

use explosives safely and effectively according to enterprise requirements

dispose of surplus, defective or unwanted detonators or explosives safely

correctly and uniformly mix explosives components

apply the regulations relating to explosives use according to enterprise requirements

use literacy skills to read, interpret and follow organisational policies and procedures, follow sequenced written instructions, record accurately and legible information collected and select and apply procedures for a range of tasks

use oral communication skills/language competence to fulfil the job role as specified by the organisation, including questioning techniques, active listening, clarifying information and consulting with supervisors as required

use numeracy skills to estimate, calculate and record routine workplace measures

use interpersonal skills to work with and relate to people from a range of cultural, social and religious backgrounds and with a range of physical and mental abilities.

Required knowledge

fire precautions and prevention procedures

appropriate explosives mixing procedures

the calculation of explosives quantities

explosives preparation, placement, firing and post firing procedures

the regulations relating to explosives use in the enterprise

relevant standards issued by Standards Association of Australia

related environmental issues and risks to livestock (including poisoning).

Range Statement

The range statement relates to the unit of competency as a whole.

Requirements and scope may include:

the Australian Standard relating to preparing and using explosives (AS 2187, Part 2 1993) which includes:

operations prior to charging

charging

preparation for firing

firing

misfires

preparation of primers.