W Iwanski Inventory Metal long turbines USA15 US15 167 pcs 10 spares Plastic long turbines HS UX15 40 pcs 4 spares Plastic short turbines HOBW UX15 41 pcs 4 spares Work to do on each turbine ID: 574115
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Slide1
Renovation of cooling turbines in electronic racks of Atlas
W. Iwanski Slide2
Inventory
Metal long turbines (USA15, US15):
167 pcs (+10 spares)
Plastic long turbines (HS UX15):
40 pcs (+4 spares)
Plastic short turbines (HO/BW UX15):
41 pcs (+4 spares)Slide3
Work to do on each turbine
Move a turbine up from a counting room to the hangar
Disassembly the chassis
Unscrew fans (left/right), disconnect internal wiring
Replace and fix new fans (left/right), connect internal wiring
Assembly the chassis
Power up the turbine
and keep it running until next day;
measure the current consumption
Update the work log, put new labels
Move renovated turbine down to a counting room and install in a rackSlide4
Technical team
When working on UX15 turbines (heavy shielded turbines, difficult access)
In/out, up/down: 4 (strong) persons
Hangar: 2 persons
Overall supervision and coordination: 1 person
When working on USA15, US15 turbines
In/out, up/down: 2 (strong) persons
Hangar: 2 persons
Overall supervision and coordination: 1 personSlide5
Access constraints
Turbines blocked from front
USA15: L1 trigger (several) -> turbines adopted to be moved out from back of a rack
UX15: BWA and BWC (1 + 1) -> demounting of front panel in place required
BWA and BWC (time-wise constraints)
10/16 to be done when BW is in open position
3/16 to be done when BW is in closed position
3/16 to be done anytime
BWA and BWC (place-wise constraints)
7/16 to be accessed from
Nacel
/fork lift
9/16 to be accessed from blue of BW structureSlide6
Progress projection
UX15 (41 plastic short): HOA, HOC, BWA, BWC
6 turbines/day
8 days
UX15 (40 plastic long): HS US, HS USA
6 turbines/day
8 days
US15, USA15 (167 metal long):
6 turbines/day 28 days
---------------------------------------------------------
= 9 weeks ~ 2.5 monthsSlide7
Rack downtime projection
UX15
BWA and BWC
few days for each wheel
HOA and HOC 1 day for each HO
HS US and HS USA 1 day for each floor
USA15 and US15
1 h per rack