2017-08-03-LH2¶

Phone details

Notes¶

Present: AK, PH, PF, MT, JT, HN, KL

1. Actions
   • Action on CMcW to trace trigger signal to FC datalogger.
     • Stands.
   • Action MT/JB to agree and implement testing of quench valves.
     • Done. System works. Not yet clear if it has been witnesed. Action changed to ensure that test is witnessed and documented.
   • Action PW to modify purge sequence limits in agreement with JB.
     • Stands.
   • Action AK/PW to test permissions of required connections HMI to PLC.
     • Stands.
   • Action CMcW/JB to search archiver for FC radiation shield temp & helium pressure excursions.
     • Done. PH gave plot to JB. Features of quenches identified.
   • Action PF/AK to propose IOC test program for next week.
     • Done. IOC isolation has been implememted successfully. Firewall is open while we are in development mode.
   • Action AK/JB to arrange further meeting on alarm handler development
     • Done. Meeting held on 01Aug17. Parameters were specified. Spreadsheet has been updated. Outtanding issue is that parameters can not be set with firewall up. So need to hard-code limits in IOC.
   • Action JB/PF to agree wiki page for paperwork.
     • Done. This is teh document pge under operations.
   • Action JB Atex rating of everything in H2 shed.
     • Stands.
   • Action KL discuss with JT final paperwork required - note ISIS requires document giving clear instruction for ISIS MCR
     • Done. Documentation defined in the OPI provided by AN.
   • Action JB to prepare rota on 'limited call-out' basis
     • Stands.
   • Action CW to contact HR re 'on-call' times
     • Ongoing.
2. Actions defined Preliminary H2 tour
   • Actions noted on the tour by AN:
     • Arrange final documentation review
       • Stands.
     • Completion of Hazop requirements
       • Stands.
     • Correct the labelling on absorber on GUI diagram
       • Done.
     • Apply labels to pipes in loading bay area
       • Check.
     • Secure crash barriers around charging enclosure to roadway
       • Stands.
     • Check valve panel area is correctly identified on ATEX zoning drawing and apply ATEX zone notice to area
       • Stands.
     • Check that an alarm is provided in event of extract fans/pumps failing
       • Stands.
     • Check bonding of lightning conductor
       • Stands.
     • Arrange for testing and certification of the lift-off vent
       • Stands.
   • The following actions all apply to the R5.2 LH2 roof enclosure:
     • PH is in contct with A. Gallagher and relevant contractors. Trying to push to get commitment for work to be carried out. Will cost money.
     • Arrange correct type of ATEX-compliant glands for vacuum pump motor wiring
     • Add ATEX-compliant blanks to unused ports in vacuum pump motor terminal boxes
     • Electrical connection to thermostat to be via ATEX-compliant gland
     • Fit and test earth bond connection to heaters
     • Check cable glands to gas detection heads and if necessary replace with ATEX-compliant ones
     • Verify that the gas detection heads have been calibrated for hydrogen (rather than methane) and amend calibration plates
     • Conduits for external lighting and beacons to be sealed to ATEX compliant standard
     • Electrical bonding of all metalwork and equipment should be installed and tested
     • Arrange a qualified inspection of the installation in line with the requirements of BS-EN60079-17, before the final safety tour
   • AN note on initial safety tour:
     • https://micewww.pp.rl.ac.uk/attachments/download/9080/Preliminary%20Safety%20tour%20of%20the%20MICE%20Liquid%20hydrogen%20installation.docx
3. Monitoring and archival of data - PF/AK
   • IOC
     • IOC now in use. Steady progress updating IOC in response to request. The only outstanding is the coding of the alarm limits.
   • Alarm handler
     • Values hvae been udated in spreadsheet, now need to migrate to alarm handler. Hard-code limits in IOC. Archiver is running.
     • Request to have heater activity to be displayed on the GUI.
4. Neon Run
   • Progress report JB/PW/MT/HN
     • Running well, stable operation since Monday. 1.0l neon, stable at 1120mB. Next will retest empty with empty sequence.
     • Level sensors tested and they are working nicely. >100mK change when in vapour. 0mK change in liquid.
     • Will check what happens when fans are turned off.
5. Current technical
   • Refurbishment of pipework from turret to wall.
     • P.Lester now on the job. OxFab making transfer line. EC and JT will make pipe supports. To be done by next week.
     • Will need to survey in situ to calculate length of central section of pipe.
   • Refurbishment of pipework from wall to roof and vent.
     • Need to inspect work that need to be done.
6. Documentation
   • List compiled by AN in OPI and required at final safery tour.
     • Operational risk assessments and method statements
     • Service and maintenance manuals and/or documents
     • List of Competent Persons
     • Test certificates and statutory written schemes of inspection and declarations of conformity
     • Completed action list from the preliminary safety tour, including actions from technical reviews and HAZOP
     • Sign off sheet(s)
     • Approval of the liquid hydrogen system by the Liquid Hydrogen Working Group
7. Timetable
8. Next meeting
   • Thurs 03th August 2017; in the MLCR
9. AoB

Summary of actions¶

• CMcW: to trace trigger signal to FC datalogger.
• PW: to modify purge sequence limits in agreement with JB.
• AK/PW: to test permissions of required connections HMI to PLC.
• MT/JB: Ensure D. Haines witnesses test of quench valve and complete appropriate documentation.
• JB: Atex rating of everything in H2 shed.
• JB: to prepare rota on 'limited call-out' basis
• CW: to contact HR re 'on-call' times

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