WÄRTSILÄ WARTSILA 20, Руководство по эксплуатации продукта

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E = Min. distance between engines dependent on common base frame
F = Width of the common base frame dependent on width of the generator
18.2 Space requirements for maintenance
18.2.1 Working space reservation
The required working space around the engine is mainly determined by the dismounting
dimensions of some engine components, as well as space requirement of some special tools.
It is especially important that no obstructive structures are built next to engine driven pumps,
as well as camshaft and crankcase doors.
However, also at locations where no space is required for any engine part dismounting, a
minimum of 1000 mm free space everywhere around the engine is recommended to be reserved
for maintenance operations.
18.2.2 Lifting equipment
It is essential for efficient and safe working conditions that the lifting equipment are applicable
for the job and they are correctly dimensioned and located.
The required engine room height depends on space reservation of the lifting equipment and
also on the lifting and transportation arrangement. The minimum engine room height can be
achieved if there is enough transversal and longitudinal space, so that there is no need to
transport parts over insulation box or rocker covers.
Separate lifting arrangement for overhauling turbocharger is required (unless overhead travelling
crane, which also covers the turbocharger is used). Turbocharger lifting arrangement is usually
best handled with a chain block on a rail located above the turbocharger axis.
18.2.3 Maintenance platforms
In order to enable efficient maintenance work on the engine, it is advised to build the
maintenance platforms on recommended elevations. The width of the platforms should be at
minimum 800 mm to allow adequate working space. The surface of maintenance platforms
should be of non-slippery material (grating or chequer plate).
NOTE
Working Platforms should be designed and positioned to prevent personnel slipping,
tripping or falling on or between the walkways and the engine
18.3 Transportation and storage of spare parts and tools
Transportation arrangement from engine room to storage and workshop has to be prepared
for heavy engine components. This can be done with several chain blocks on rails or
alternatively utilising pallet truck or trolley. If transportation must be carried out using several
lifting equipment, coverage areas of adjacent cranes should be as close as possible to each
other.
Engine room maintenance hatch has to be large enough to allow transportation of main
components to/from engine room.
It is recommended to store heavy engine components on slightly elevated adaptable surface
e.g. wooden pallets. All engine spare parts should be protected from corrosion and excessive
vibration.
On single main engine installations it is important to store heavy engine parts close to the
engine to make overhaul as quick as possible in an emergency situation.
18-2 Wärtsilä 20 Product Guide - a13 - 6 September 2016
Wärtsilä 20 Product Guide 18. Engine Room Layout