SKILL  KNOWLEDGE  SAFETY

PMASUP441C - Decommission plant

Description

 This competency covers the decommissioning of an existing plant/pipeline or major plant area, and its associated equipment. Decommissioning refers to the removal from service of plant/pipeline and equipment and its storage/mothballing' or disposal.

This unit does not cover the shutdown of a plant/pipeline - use PMAOPS411B Manage plant shutdown and restart.

Pre/Co-Requisites

 Nil

Application

 In a typical scenario, an existing plant/pipeline or major plant area, and its associated equipment, are planned to be taken out of service. The experienced technician organizes the systematic shutdown, cleaning out and preparation for safe 'moth-balling' all of the plant and equipment.

This competency is typically performed by experienced technicians, likely to be the leaders of an operational team,
usually working in conjunction with a decommissioning team, for the purpose of decommissioning plant/pipelines. As
decommissioning is usually a team activity, the technician will take a lead technical role, rather than undertake all aspects on an individual basis.

Much of the activity of successful decommissioning is in planning the activity and then supervising the work to ensure it is done safely and efficiently with no environmental damage. The technician may have no 'hands-on' role at all.

Performance Criteria

 1. Contribute to decommissioning planning.
1.1 Apply process understanding to the planning process
1.2 Identify the role and purpose of the plant and equipment
1.3 Ensure the work is coordinated effectively with others involved on the work site
1.4 Identify process conditions and apply to hazard studies
1.5 Undertake investigations following on from hazard studies
1.6 Obtain materials necessary to complete the work and check against job requirements
1.7 Obtain tools and equipment necessary to carry out the work and check for correct operation and safety
1.8 Prepare plans to ensure that procedures are performed in the correct sequence
1.9 Obtain approvals where necessary from appropriate authorities to ensure decommissioning process proceeds in accordance with the plan.
1.10 Complete all appropriate documentation.

2. Isolate and decontaminate equipment/unit.
2.1 Interpret and apply decommissioning plan
2.2 Identify and use appropriate safety equipment and materials
2.3 Isolate and decontaminate equipment components as required
2.4 Dispose of contaminated materials or components as required
2.5 Complete required documentation.

3. Inspect, test and notify completion of work.
3.1 Select tools and equipment appropriate to the testing/inspection requirements and utilise in accordance with
manufacturer specifications and legislative requirements
3.2 Test/inspect in accordance with requirements
3.3 Ensure compliance with OHS legislative requirements for risk assessment prior to disposal
3.4 Ensure any required additional work is undertaken/initiated
3.5 Notify work completion.

Required Skills & Knowledge

 Required Skills
Demonstrated knowledge and ability to:
  • plan the decommissioning process
  • arrange resources as required
  • coordinate own work and the work of others, including on-site contractors/operators
  • interpret and solve operational problems as they arise and take appropriate action
  • document the decommissioning and recommendations for safe storage/maintenance/disposal.

Required Knowledge
Competence to include the ability to apply and explain:
  • chemistry of materials involved
  • principles of operation of the process
  • principles of operation of the equipment involved
  • all items on a schematic of the plant and the function of each
  • correct methods of, stopping plant items
  • function of major components
  • HAZOP study process and the interpretation of findings
  • results and impact of a HAZAN study
  • hazardous substances legislation
  • the process of hazard identification, risk assessment and control
  • sources of hazard information (such as Material Safety Data Sheets)
  • safe disposal methods of materials and equipment
  • decontamination processes.

Range Statement

 Codes of practice/standards
Where reference is made to industry codes of practice, and/or Australian/international standards, the latest version must be used.

Context
This competency unit includes the functions of :
  • liaison with manufacturers, engineering personnel, designers, maintenance personnel
  • participation in hazard and operability studies (HAZOP) and hazard analysis studies (HAZAN)
  • removal of plant and equipment from service, which may include:
    • 'mothballing'
    • storage
    • disassembly
    • demolition
  • decontamination of equipment
  • disposal of equipment and waste.

This competency unit includes the understanding and application of:
  • OHS regulations especially those related to plant
  • codes of practice
  • disposal procedures and regulations.

All operations are performed in accordance with standard operating procedures.

Health, safety and environment (HSE)
All operations to which this unit applies are subject to stringent health, safety and environment requirements, which may be imposed through State or Federal legislation, and these must not be compromised at any time. Where there is an apparent conflict between Performance Criteria and HSE requirements, the HSE requirements take precedence.

Procedures
Procedures may be written, verbal, computer-based or in some other form. They include:
  • all work instructions
  • standard operating procedures
  • formulas/recipes
  • batch sheets
  • temporary instructions
  • any similar instructions provided for the smooth running of the plant.

For the purposes of this Training Package, 'procedures' also includes good operating practice as may be defined by industry codes of practice (eg Responsible Care) and government regulations.

Evidence Guide

 Overview of assessment
Assessment of this unit should include demonstrated competence on actual plant/pipeline 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.

Simulation may be required to allow for assessment of parts of this unit. It is possible that a simulation will be required to ensure that the technician is competent before taking a significant role in a decommissioning activity. Decommissioning is an infrequent activity and so it may not be practical or equitable to wait for an actual decommissioning to occur to use this as the basis for assessment.

Simulation should be based on the actual plant and will include walk- throughs of the relevant competency components.
Simulations may also include the use of case studies/scenarios and role plays.

This unit of competency requires a significant body of knowledge which will be assessed through questioning and the
use of what-if scenarios both on the plant (during demonstration of normal operations and walk-throughs 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 recognise and analyse potential situations requiring action and then in implementing appropriate corrective action. The emphasis should be on the ability to stay out of trouble rather than on recovery from a disaster.

Consistent performance should be demonstrated. In particular look to see that:
  • potential problems are recognised
  • the range of possible causes can be identified and analysed and the most likely cause determined
  • appropriate, timely action is taken
  • obvious problems in related plant areas are recognised and an appropriate contribution made to their solution

These aspects may be best assessed using a range of scenarios/case studies/what ifs as the stimulus with a walk
through forming part of the response. These assessment activities should include a range of problems, including new,
unusual and improbable situations which may have been generated from the past incident history of the plant, incidents
on similar plants around the world, hazard analysis activities and similar sources.

Context of and specific resources for assessment
Assessment will require access to a 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 scenarios/case studies/what-ifs 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 relevant teamwork and communication units.
In a major hazard facility, it may be appropriate to assess this unit concurrently with relevant OHS 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.










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