Elements and Performance Criteria
- Confirm required outcomes from modification
- Communicate with production and engineering managers and other key stakeholders and agree necessary and desirable: , technical requirements , operations requirements , timelines , cost and other requirements.
- Determine regulatory/industry code requirements.
- Obtain relevant drawings of existing plant.
- Develop modification brief, including relevant P&ID sketch, to meet needs.
- Establish required performance measures to indicate success of project.
- Obtain 'sign off' on modification brief from all relevant persons.
- Short list possible modifications to meet brief
- Investigate the range of available equipment/plant units.
- Determine relative advantages and disadvantages of each class of equipment/type of modification which may provide a solution.
- Compile a shortlist of modification types/equipment classes which will best meet the modification brief.
- Discuss shortlist alternatives with relevant stakeholders and obtain 'sign off' for the chosen approach.
- Select technically best equipment/unit/modification
- Complete technical specification for required modification incorporating feedback received.
- Compare specification with that of 'off the shelf' equipment where appropriate.
- Arrange for equipment suppliers to tender to the specification where necessary, following company procedures.
- Rank competing items by their compliance with the technical specification.
- Compare hazard profile of possible modifications
- Organise a hazard analysis (e.g. HAZOP) for the modification according to company procedures.
- Ensure that all stakeholders are represented on the hazard analysis team.
- Brief the hazard analysis team on the modification and the alternatives under evaluation.
- Eliminate alternatives which do not meet hazard requirements.
- Rank remaining competing items by safety performance.
- Make final choice of solution
- Evaluate competing items by their economic performance (e.g. life, maintenance, running costs) and rank by total lifetime cost.
- Seek further information where necessary to allow a rational selection to be made.
- Choose the modification which meets all required minimum standards and will provide the best solution.
- Verify choice in discussion with production and engineering managers and other key stakeholders.
- Arrange for order to be placed following company procedures.
- Check and commission modification
- Complete modification