Maintenance planning control and documentation of a 300T/H P. F. boiler and ancillary plant

Abstract

Total maintenance planning embraces all activities necessary to plan, control and record. All work done in connection with keeping an installation to the acceptable standard. This includes preventive maintenance and corrective maintenance, planned overhaul, planned replacement, spares provisioning, workshop functions, repairs and renewals, plant history compilation, plant modification to facilitate maintenance, spare-parts manufacture, preventive maintenance on spare-parts, etc. In a fully controlled situation only the time spent on emergency work is 'unplanned' and this could well be less than 10 per cent of the available man-hours in the maintenance department. The three basic requirements of a planned maintenance system are: - A programme of maintenance activity for the buildings, plant and equipment. - A means of ensuring that the programme is fulfilled. - A method of recording and assessing results. The basic elements of a planned maintenance system are the following: Assets Register. A comprehensive register of all plant and buildings (or of that part of the plant and buildings which are the subject of the planning) is All essential base for the planning operation. Each asset must be positively identified in terms of: - Name and code. - Description. - Reference numbers - manufacturers, suppliers (if any), users. Location with provision for changes if item is interchangeable or mobile. - Supplier's details. The asset code can be numerical, or alpha-numerical and replaces any existing plant numbering systems. Asset codes are given to plant, services installations, 2nd mobile plant and are attached to the asset for identification purposes. The codes can be used in a variety of ways and are preceded by other codes when used for corporate purposes (investment analyses, depreciation calculations, etc.). Asset codes can identify asset type (PU= pump), accounts codes (primary and secondary) and physical locations. Additional numbers can be added to link the basic asset codes to spare parts, special tools, work specifications, or to drawings and manuals filed in the maintenance library. It is helpful if the accounts codes and location codes coincide. The asset code must be used on all work cards, defect reports, materials requisitions and other documentation as the key to effective communication and feedback [...].