Cryo stop of P8 on 1st of November

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Presentation transcript:

Cryo stop of P8 on 1st of November Stop of warm compressor CP6 of QSCB on safety chain (oil differential pressure low) at 10:35AM After investigation, problem of oscillations with the controller of 6CV670 which regulate the differential pressure of the oil injection of high stage compressors of the station LHCB Problem of oscillations on this valve was already observed … and controller was due to be changed during next TS New controller installed over lunch time Restart of installations by 2PM Recovery expected by Wednesday evening…

Problem (oscillations) with controller of 6CV670, which regulate ΔP of oil injection for compressor

Cryo stop of P8 on 1st of November Faulty controller 6CV670

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