During the maintenance period today the E-Hall tunnel was accessed to begin controls tests on the beam dump water system and initial fill of the system. This work was done by Bill Richert and Dave Morris while I observed. Before work began I verified that pressure relief valves were installed as per the P&ID (TEL5104 Rev A) - they have been installed but the exhaust ports from the valves have not yet been routed to the active drain. They first tested the hydrogen venting and measuring system in the E-Hall and all seemed to work properly. Next, in the tunnel Dave confirmed that he was able to actuate the solenoid valve used for filling the system from EPICS. Next the pressure sensor used to determine expansion tank level was tested - although not calibrated properly yet they were able to confirm that it is wired correctly and responding as expected. Upon inspection of the pump it was found that the pump motor was not mounted properly to the support plate below (this should have been done by the supplier before delivery). Because the pump cannot be run in this state it was decided not to fill the system at this point. Bill Richert will have the pump properly mounted before the system is filled, possibly during the two day maintenance period next week. |