IBL cooling operation at bake-out IBL CO2 meeting 10 April 2014 Bart Verlaat, Lukasz Zwalinski, Maciej Ostrega, Olivier Crespo Lopez 1.

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Presentation transcript:

IBL cooling operation at bake-out IBL CO2 meeting 10 April 2014 Bart Verlaat, Lukasz Zwalinski, Maciej Ostrega, Olivier Crespo Lopez 1

Special operation for bake out To have a guaranteed cooling during bake out a special procedure is in place: –Both systems in parallel If 1 fails we interlock the bake-out –Safe cooling down at half the flow from the 2 nd system If both systems fail a bottle is emptied through the transfer line to have cooling for an extended time. –Operation at a temperature set point of -20’C 2

AC042 LP101 vent evacuate 6 8 FT106 ⅜” EH106 TT106 TS106 EH101 / EH102 / EH103 TT101 / TT102 / TT103 TS101 / TS102 / TS103 PT101 / PT102 / PT103 HX150 CO 2 system A 100 labels LT142 LT342 FT306 FL304 ⅜” FL306 VP PV110 PT150/ TT150/ SC150 ¼” BD108 PT108 TT108 CO 2 from experiment CO 2 to experiment 42 PT142 PV108 PV144 HX148 TT148 BD148 SV042 SV043 MV042 FL144 MV041 TT146 AV108 Freon chiller A 200 CO 2 system B 300 labels 10 LP101 EH301 / EH302 / EH303 TT301 / TT302 / TT303 TS301 / TS302 / TS303 PT301 / PT302 / PT303 4 FL344 PT304 TT304 MV EH306 TT306 TS306 BD308 PT308 TT308 AV308 PV308 PV310 PV TT346 HX350 HX348 LP301 Fill port nc no nc no nc MV050 MV054 MV052 MV056 BD054 PT054 EV148 EV348 nc 50 PT350/ TT350/ SC350 SV040 MV040 SV041 BD MV058 NV110 MV110 MV310 nc CV142 nc CV342 nc Cold CO2 line Cold R404a line Warm service line (Cold lines require 32mm insulation) no NV310 no ¼” ½” 48 TT348 BD348 Freon chiller B 400 MV043 PT342 BV, PT040 PT042 PT056 PRC142 controlling CV142, EH142/143 (PT142 & SC150) PRC342 controlling CV342, EH342/143 (PT342 & SC350) PT050 PT058 no FL104 4 PT104 TT104 nc FL106 Fill port MV106 EH142/143 TT142/143 TS142/143 FL042 EH342/343 TT342/343 TS342/343 MV012 MV039 AV012

PV110 CO 2 from experiment CO 2 to experiment PV144 LP101 PV310 PV344 nc MV012 MV039 AV012 no Vent Water no Normal operation: 2 systems running All pneumatic valves are pressurized

PV110 CO 2 from experiment CO 2 to experiment PV144 LP101 PV310 PV344 nc MV012 MV039 AV012 no Vent Water no Failure: 1 system stops, bake out is interlocked Pneumatic valves of blow system stay pressurized

PV110 CO 2 from experiment CO 2 to experiment PV144 LP101 PV310 PV344 nc MV012 MV039 AV012 no Vent Water no Failure: 2 systems stop, blow system activated All system valves loose air pressure, blow system valves automatically openend

Blow system connection location 7 R404a 2-stage chiller CO 2 unit Accumulator unit

Blow system summary A failure of both system cause automatically a blow system activation. –Safe against: cooling system failure by interlocks –Power loss, blow system is activated in fail safe condition meaning valves will be opened Parts have been ordered from SR1 foreseen test ( never carried out) Blow system activation can be tested over junction box.