Dismantling and removing marine electrical equipment
Overview
This standard identifies the competences you need to dismantle and remove marine electrical equipment, in preparation for complete overhaul or refit activities, in accordance with approved procedures. This will involve dismantling and removing equipment, at component or unit level, on a variety of different types of electrical assemblies and sub-assemblies, such as power generation and distribution equipment, communication equipment, navigational equipment, sensor systems, computer systems, weapon systems, rotating electrical machines and domestic equipment and lighting, alarm, detection and monitoring equipment.
Your responsibilities will require you to comply with organisational policy and procedures for the dismantling and removal of the marine electrical equipment and to report any problems with these activities that you cannot personally resolve, or are outside your permitted authority, to the relevant people. You must ensure that all tools, equipment and materials used in the activities are removed from the work area on completion of the activities and that all necessary job/task documentation is completed accurately and legibly. You will be expected to work with a minimum of supervision, taking personal responsibility for your actions and for the quality and accuracy of the work that you carry out.
Your underpinning knowledge will provide a good understanding of your work and will provide an informed approach to applying dismantling and removal techniques on marine electrical equipment. You will understand the dismantling and removal methods and procedures used and their application. You will know about the electrical equipment being removed, in adequate depth to provide a sound basis for carrying out the dismantling and removal activities to the required specification.
You will understand the safety precautions required when carrying out the marine electrical equipment dismantling and removal activities, especially those for isolating the equipment. You will be required to demonstrate safe working practices throughout and will understand your responsibility for taking the necessary safeguards to protect yourself and others in the workplace.
Performance criteria
You must be able to:
- work safely at all times, complying with health and safety and other relevant regulations, directives and guidelines
- establish and where appropriate mark component for re-assembly
- ensure that any stored energy or substances are released safely and correctly
- make all isolations and disconnections to the equipment in line with approved procedures
- carry out the dismantling to the agreed level using correct tools and techniques
- store components for re-use in approved locations
- dispose of unwanted components and substances in accordance with approved procedures
deal promptly and effectively with problems within your control and report those that cannot be solved
complete relevant documentation in line with organisational procedures
Knowledge and Understanding
You need to know and understand:
- the specific safety practices and procedures that you need to observe when dismantling and removing marine electrical equipment and circuits (including any specific legislation, regulations/codes of practice for the activities, equipment or materials)
- the health and safety requirements of the area in which the marine electrical dismantling activity is to take place and the responsibility these requirements place on you
- how to recognise and deal with emergencies and the procedures to be followed (such as methods of safely evacuating and closing down of compartments in the case of fire or other major incident, first aid, fire fighting and resuscitation of personnel)
- the isolation and lock-off procedure or permit-to-work procedure that applies to the dismantling and removal activities (to include electrical isolation, locking off switch gear, removal of fuses, placing maintenance warning notices, proving that isolation has been achieved and secured)
the importance of wearing protective clothing and other appropriate safety equipment (PPE) during the electrical dismantling activities
the precautions to be taken to prevent electrostatic discharge (ESD) damage to circuits and sensitive components (such as use of earthed wrist straps)
what constitutes a hazardous voltage and how to recognise victims of electric shock
how to reduce the risks of a phase to earth shock (such as insulated tools, rubber matting and isolating transformers)
- the importance of applying the appropriate behaviours in the workplace and the implications for both the apprentice and the business if these are not adhered to
- how to obtain and interpret drawings, circuit and physical layouts, charts, specifications, manufacturers' manuals, history/maintenance reports and other documents needed in the dismantling process
- how to carry out currency/issue checks of the specifications you are working with
- the extent to which the equipment is to be dismantled for transportation
- the different types of cabling used in marine electrical installations and their method of disconnection (to include multicore cables, single core cables, steel wire armoured (SWA), mineral insulated (MI), screened cables)
- the different types of wiring enclosures that are used (to include conduit, trunking and traywork systems) and the methods of removing them
- the techniques used to dismantle/assemble electrical equipment (such as unplugging, de-soldering, removal of screwed, clamped and crimped connections)
- methods of removing and replacing cables and wires from wiring enclosures without causing damage to existing cables
- methods of attaching identification marks/labels to removed components or cables to assist with re-assembly
- methods of supporting and lifting the equipment being removed
- the need to ensure that lifting and handling equipment is within its current test dates
- the tools and equipment used in the dismantling activities (including the use of soldering irons and gland disconnecting tools)
- the storage requirements of removed units and assemblies which are not part of the overhaul process
- the methods used to protect and prepare the removed equipment during transportation to the place of overhaul
- the generation of maintenance documentation and/or reports following the dismantling activity
- the problems that can occur during the electrical dismantling and removal activity and how they can be overcome
- the extent of your own authority and whom you should report to if you have a problem that you cannot resolve
Scope/range
Scope Performance
Carry out all of the following during the dismantling and removal activities:
- plan the dismantling and removal activities to cause minimal disruption to normal working
- use the correct issue of structure/vessel/craft system drawings and dismantling documentation
- adhere to risk assessment, COSHH and other relevant safety standards
- obtain clearance to work on the system and observe the appropriate power isolation and safety procedures
- provide safe access and working arrangements for the maintenance area
- carry out the dismantling and removal activities, using appropriate techniques and procedures
- dispose of waste items in a safe and environmentally acceptable manner and leave the work area in the prescribed category of cleanliness
Carry out dismantling and removal activities on two of the following types of marine electrical systems:
- communication equipment and systems
- navigational equipment and systems
- sensor equipment and systems
- computer equipment and systems
- weapons equipment and systems
- rotating electrical machines and domestic equipment
- lighting, alarm, detection and monitoring systems
- power generation and distribution equipment and systems
Carry out disconnection and removal of electrical equipment, to include five of the following:
- single phase power supplies
- three-phase power supplies
- direct current power supplies
- motors and starters
- switchgear and distribution panels
- control systems and components
- electrical plant
- wiring enclosures
- luminaires
Carry out all of the following dismantling and removal activities:
- isolating and locking off equipment
- disconnecting wires and cables
- attaching suitable cable identification markers
- removing wiring enclosures
- removing electrical units/components
- making safe all disconnected service supplies
- supporting equipment to be removed
- removing mechanical fastening devices
- safely storing all peripheral units that are not part of the overhaul
- protecting and preparing removed components for transportation to the overhauling area
Dismantle and remove marine electrical equipment in compliance with one of the following standards:
- customer (contractual) standards and requirements
- company standards and procedures
- specific equipment requirements/manufacturer's data
- recognised compliance agency/body's standards
Complete the relevant paperwork, to include one from the following and pass it to the appropriate people:
- job cards
- system log
- maintenance logs or reports
- work authorisation documents
- vessel wiring documentation
- other specific recording method
Scope Knowledge
Values
Behaviours
Behaviours:
You will be able to apply the appropriate behaviours required in the workplace to meet the job profile and overall company objectives, such as:
- strong work ethic
- positive attitude
team player
dependability
- responsibility
- honesty
- integrity
- motivation
- commitment