To-do and To-consider items for M9B superconducting solenoid/refrigeration system. - New pressure guages for the Mycom compressor panel. The present guages are damaged from vibration and do not read properly. The new guages should be isolated somehow from vibration. - Investigate designing and building a compressor oil heater/conditioner. The helium compressor should be topped up with "conditioned" oil. - Have contractor check allignment of compressor motor to compressor and check flex coupling condition. MYCOM to recommend contractor. Check condition of and re-grease compressor motor bearings. - Replace missing and unreadable identification tags on valves, piping, and instrumentation throughout the system. - Identify, catalog and label stored spare parts and equipment and provide proper storage. - Provide "Lamp Check" button for main compressor panel. - Investigate LED type replacement bulbs ( Base Style 24XX ) for Sulzer control panel. - Update and improve operation manual and maintenance instructions. - Provide computer control for solenoid power supply to simplify operation and make it less prone to operator error. - Re-arrange locations of vacuum computer and X displays so that the opportunity of accidently bumping into buttons on Sulzer panel is reduced. - Re-write solenoid power supply logic to require that both powerlead temperatures must be stable and below XX? Kelvin for 60 minutes before enabling arming the solenoid power supply. - Increase computer security. Restrict physical access ? Virus scanner ? - Look into using Ultra-VNC with encryption for security. Stop Commute modem access but route Commute access through hard wired serial connection to PC running Ultra-VNC. Or keep modem access but use call back method. - Set up procedure and pipe in convenient sample points for dewpoint, N2/O2, oil content readings. Sample readings should be documented prior to starting turbine cooling. - Upgrade LN2 fill equipment for Purifiers. Can both puifiers be operated in parallel during a cool down ? Auto-isolation of purifiers' from helium system when LN2 runs out or fails or power failure. - Provide dedicated LN2 line to M9B compressor building ? Guy Stanford has info on relatively inexpensive efficient foam covering for LN2 lines instead of vacuum jacketed piping. - Can anything be done about the epoxy fumes from the buffer tank ? A charcoal/molecular seive filter in the buffer tank line check-valved for free flow to buffer but filtered flow from buffer ? - Fix back-up air compressor system. - Remove any unauthorized taps off of the M9B compressed air line to other non M9B systems. - Clean-up of compressor building and clean-up around Sulzer panel. - Route turbine defrost circuits to outside of shielding blocks. - Clean-up area behind solenoid power lead flowmeters and pressure gauge panel. Remove all unused tubing and cables. - Harden Sulzer control panel against water damage from water leaks overhead. - pipe in precision flow control valve and pressure guages on powerlead flow to main compressor suction line. - pipe in manual bypass circuit around main coldbox HE in and out valves. - New vacuum controller for Sulzer panel. Repair old one for a spare. - Add in some smart logic to prevent system trip on solenoid vacuum during a quench recovery cooldown. When solenoid power supply is not armed solenoid vacuum should be allowed to degrade slightly ( within limits ) from contamination defrosting into solenoid vacuum. As soon as solenoid power supply is armed then solenoid vacuum trip set to high vacuum again. Solenoid vacuum trip logic should be re-worked. - provide vacuum gauge between solenoid vacuum diffpump and BV2. - provide computer readable indication for: - CV204 position - LHe heater reading - turbine 1 entrance temp. - Buffer tank line pressure - air pressure - position signal to CV211 and CV212 - position of CV151 - position of CV141 - 80K shield heater setting - purifier LN2 status - backup air compressor OK - solenoid vacuum - solenoid current - solenoid power supply armed ? - others ????? - check oil levels, drive belts etc for system mechanical, diff, and cryo pumps. - check calibration of system pressure and temperature sensors. - repairs and upgrades to Sulzer Control panel instrumentation and relays - re-charge TI148 and TI149 - follow-up on improvement requests for X displays for vacuum and solenoid data. - compressor water package maintenance and repairs. - repair compressor building roof leak. - inspect and clean system air filters and coalesers and water filters. - buffer tank clean-up and re-paint. - train more system operators for M9B and ISAC II helium refrigeration systems ? - Vacuum gauges on cold box transfer lines ? Or build small portable LN2 trapped vacuum pump station ( probably very usefull for many other areas at TRIUMF including purifier regeneration in compressor building ) - Should we buy Don Dales' first trip logger ? It is a PLC that is networkable and may be used for other functions ? Is it obsolete or outdated ? - Develope a system using a residual gas analyzer for helium gas purity measurements ? _____________________________________________________________________________ Items added Dec 19,2003 : - Sniffer Leak check of piping, especially powerlead insulators. - Top up gas to system. The lowest helium relief valve setting is SV45 set at 5 kg/cm^2 Gauge (71.12 psig) so it would be reasonable to fill the system to 60 psig. - re-work purifier plumbing, add purge ports at flowmeter. Make purifiers portable ? - Make small portable circulation helium compressor + ORS skid ? - Schedule quarterly steady state vibration measurments for MYCOM compressor. (Tom Ries has vibration measurement equipment) _______________________________________________________End of list for now !