Dismantling and removing marine mechanical equipment
Overview
This standard identifies the competences you need to dismantle and remove marine mechanical equipment, in preparation for complete overhaul or refit activities, which may be carried out in a shipyard or may be returned to the manufacturer for overhaul. This will involve dismantling and removing equipment at component or unit level on a variety of different types of marine mechanical assemblies and sub-assemblies, such as propulsion and transmission, fluid power, steering and control, lifting equipment, refrigeration and air conditioning, fire main equipment and pantry and galley equipment.
Your responsibilities will require you to comply with organisational policy and procedures for the dismantling and removal of the marine mechanical equipment and to report any problems with the dismantling 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 mechanical equipment. You will understand the dismantling and removal methods and procedures used and their application. You will know about the mechanical 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 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, both ashore and afloat.
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 and regulations
- 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 mechanical equipment (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 mechanical 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 (such as electrical isolation, depressurisation of system, draining fluids, placing maintenance warning notices, blanking off open systems to prevent the ingress of contaminants such as lagging and other compartment debris and proving isolations have been achieved and secured)
the importance of wearing protective clothing and other appropriate safety equipment (PPE) during the mechanical dismantling activities
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 techniques used to dismantle the mechanical equipment (such as making electrical disconnections, proof marking components to aid reassembly, removing assemblies requiring pressure/force, removing mechanical locking and securing mechanisms/devices)
- methods of removing assemblies and sub-assemblies without causing damage to surrounding structures
- 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 and how to check that they are in a safe and usable condition
- the storage requirements of removed units and assemblies which are not part of the overhaul process
- the procedure for the safe disposal of waste materials and environmental regulations
- 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 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 of the marine mechanical equipment:
- plan the dismantling and removal activities to cause minimum 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
- leave the work area in the prescribed category of cleanliness on completion of the activities
Carry out dismantling and removal activities on three of the following types of marine mechanical equipment:
- propulsion
- auxiliary power units
- weapons launchers
- transmission
- fire main equipment
- liquid oxygen equipment
- fuel
- ballast arrangements
- steam plant and equipment
- hydraulic
- compressors (high or low pressure)
- pantry and galley equipment
- pneumatic
- weapons hoists
- refrigeration and air conditioning
- stern seals, stabilisers and shock mounts
- control valves (such as throttle, isolating, reducing and ported)
- pumps (such as centrifugal and positive displacement)
- steering and rudder arrangements
- processing plant (such as sewage treatment and reverse osmosis)
- propeller shafts and drives (such as Z, V and inline, plummer blocks)
- lifting and handling equipment (such as replenishment at sea rigs, aircraft lifts, davit, windlasses and capstans)
- other specific marine mechanical equipment
Carry out eleven of the following dismantling and removal activities:
- isolating and locking-off equipment
- dismantling equipment to unit/sub-assembly level
- bringing the system to atmospheric pressure
- making safe all disconnected service supplies
- draining off fluids
- supporting the equipment to be removed
- disconnecting wires and cables
- removing mechanical fastening devices
- attaching suitable cable identification markers
- proof marking/labelling of components for re-assembly
- securing or safely storing all peripheral units which are not part of the overhaul process
- protecting and preparing removed components for transportation for overhaul
- fitting blanks to open systems to prevent entry of contaminating debris
Dismantle and remove marine mechanical equipment which complies 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 documentation in line with organisational procedures, to include one of the following and pass it to the appropriate people:
- job cards
- system log
- maintenance logs or reports
- work authorisation documents
- other specific reporting method (such as accident/incident/near missing reporting)
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