Interventions on electrical distribution and racks’ infrastructure still to be done during LS1 and their impact W.Iwanski
Outline Modifications of switchboards EXD16/15X and EXD26/15X New UPS in US15 New switchboards EOD2’/15, ESD2’/15 and EOD5’/15A New switchboard EOD8/15A Modifications of repartition boxes in 19 TDAQ ROS racks in USA15 Refurbishment of cooling turbines in all electronic racks in USA15, US15 and UX15 06/11/2013W.iwanski PH/ESE-BE2
Modifications of switchboards EXD16/15X and EXD26/15X Goal: to integrate newly added breakers with our monitoring system – Due to lack of space inside those switchboards, one has to move an interlock module outside Impact: Stop of supply for racks on HOA and HOC for 1 day (November 2013) 06/11/2013W.iwanski PH/ESE-BE3
New UPS in US15 Goal: to provide smooth supply for electronic racks fed from Normal network in US15 L2 – Up to 10 min of autonomy, no Diesel back-up Impact: Stop of supply for racks fed from Normal network in US15 during 5 days (9-13 December 2013) 06/11/2013W.iwanski PH/ESE-BE4
New switchboards EOD2’/15, ESD2’/15 and EOD5’/15A Goal: to provide new type of control over powering outputs – Motorised breakers which keep failing to turn ON when driven from DCS will be replaced by a breaker_+_contactor combo in new switchboards Impact: Stop of supply for all equipment fed from UPS and Diesel switchboards EOD2/15, ESD2/15 and EOD5/15A for ~ 4 weeks (> March 2014) – EOD2/15: ID heaters, Muons, DCS station, Pixel-DCS, SCT- DCS – ESD2/15: Sniffers, DSS station – EOD5/15A: Muons, Larg cooling station, ID heaters, ID evaporative cooling 06/11/2013W.iwanski PH/ESE-BE5
New switchboard EOD8/15A Goal: to provide UPS power for new installations in USA15 Impact: Stop of systems running on temporary supply when connecting them to this new switchboard (> March 2014) – IBL cooling, new racks, Tile cooling station, Larg cooling station (moved from EOD5/15A), Turbo pump.. 06/11/2013W.iwanski PH/ESE-BE6
Modifications of repartition boxes in 19 TDAQ ROS racks in USA15 Goal: to reduce inrush current when powering racks ON Impact: Stop of supply in each concerned rack for 1 day (> March 2014) 06/11/2013W.iwanski PH/ESE-BE7
Refurbishment of cooling turbines in all electronic racks in UX15, USA15 and US15 (1) Goal: preventive change of motor+fan modules inside turbines due to projected end-of-life of bearings Impact in UX15: Stop of supply in each switchboard supplying a group of racks for ~ 1 day – HOA (5 turbines): 1 day – HOC (5 turbines): 1 day 06/11/2013W.iwanski PH/ESE-BE8
Refurbishment of cooling turbines in all electronic racks in USA15, US15 and UX15 (2) Impact in UX15 (cont’d) – HS USA side (23 turbines): 5 days Ground floor: 1 day 1st floor: 1 day 2nd floor: 1 day 4th floor: 1 day 7th & 8th floor: 1 day 06/11/2013W.iwanski PH/ESE-BE9
Refurbishment of cooling turbines in all electronic racks in USA15, US15 and UX15 (3) Impact in UX15 (cont’d) – HS US side (17 turbines): 4 days Ground floor: 1 day 1st floor: 1 day 2nd floor: 1 day 7th & 8th floor: 1 day 06/11/2013W.iwanski PH/ESE-BE10
Refurbishment of cooling turbines in all electronic racks in USA15, US15 and UX15 (4) Impact in UX15 (cont’d) – BWA (16 turbines): 3 days – BWC (16 turbines) : 3 days 06/11/2013W.iwanski PH/ESE-BE11
Refurbishment of cooling turbines in all electronic racks in USA15, US15 and UX15 (5) Impact in USA15 L1 (65 turbines), USA15 L2 (70 turbines) and US15 L2 (28 turbines): Stop of supply in each concerned rack for ~ 1 hour 06/11/2013W.iwanski PH/ESE-BE12