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Replacement procedure for North Area splitters

Replacement procedure for North Area splitters. WG TDC2/TCC2 30 th October 2012. Replacement procedure for North Area splitters. Where are they installed? Checks made around the installed splitters in TDC2 Test of the installation and removal of a splitter in a mock up

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Replacement procedure for North Area splitters

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  1. Replacement procedure for North Area splitters WG TDC2/TCC2 30th October 2012 JL GRENARD EN/HE

  2. Replacement procedure for North Area splitters • Where are they installed? • Checks made around the installed splitters in TDC2 • Test of the installation and removal of a splitter in a mock up • Dosimetric point of view • Optimization of the handling • In case of a failure of the equipment • Under realization • What remains to be done JL GRENARD EN/HE

  3. Where are they installed? TDC2 BA 80 Two groups of 3 magnets They are designed with V supporting and automatic plug ins Installation rails are on place, and prealigned with the magnet JL GRENARD EN/HE

  4. Checks made around the installed splitters in TDC2 • Measurement of all the keys dimensions • Done on each splitter to verify repeatability • Checks (photos) of each splitter to identify special obstacles or environment differences JL GRENARD EN/HE

  5. Checks made around the installed splitters in TDC2 • Check of the status of the transfer rails They are all ok, there is some rust but not on rolling or guiding surfaces JL GRENARD EN/HE

  6. Test of the installation and removal of a splitter in a mock up • Test of all the process for the de-installation The whole process has been tested and chronometrized Lifting from his supports JL GRENARD EN/HE

  7. Test of the installation and removal of a splitter in a mock up • Test of all the process for the removal Transfer to the transport zone JL GRENARD EN/HE

  8. Test of the installation and removal of a splitter in a mock up • Test of all the process for the removal Magnet ready for transport JL GRENARD EN/HE

  9. Test of the installation and de-installation of a splitter in a mock up • Test of all the process for the removal Lifting with the automatic spreader beam JL GRENARD EN/HE

  10. Test of the installation and removal of a splitter in a mock up • Procedure for the complete handling Installation has as well been tested https://edms.cern.ch/document/1155859/1 JL GRENARD EN/HE

  11. Dosimetric point of view • The whole operation is feasible with 2 peoples close to the radioactive objects at ~2m (other people is needed for the preparation of the work) • Complete installation or removal can be done in 1h (without including the preparation time) • The collective dose will be ~2mSv to be shared among all transport intervenient • Mainly depending on cooling time • A few minutes in contact with the magnet are needed for some visual checks JL GRENARD EN/HE

  12. Dosimetric point of view • Some mobile lead shielding will be installed in front of the elements on each side to protect from highly radioactive components as extremities JL GRENARD EN/HE

  13. Optimization Only minors things can be done • Better storage of the cables between the tractor and the translation unit -> reducing the risk of damaging the cables -> under procurment • Additional positioning tooling JL GRENARD EN/HE

  14. In case of a failure of the equipment • Lifting with hydraulic hand jacks to take out the load of the translation unit • Removal of the translation unit from radioactive area for repair with a fork lift • Some key components of the machine: electrics motors are already at CERN • In general very robust and easy machines, no electronics and some functions • Don’t expect major failures JL GRENARD EN/HE

  15. Under realization • Refurbishment of the Loehr trailer - electrical refurbishment (check of the motors, new control cabinet, new switches) -mechanical refurbishment (bearing, chains…) • Procurement of spares cables, and some extra spares parts • Improvement of the cable liaison between the systems JL GRENARD EN/HE

  16. In case it’s needed we are ready to exchange the splitters in TDC2! • 4 peoples are trained for this operation • If the temporary removal is a need a simulation on the mock will be realized again JL GRENARD EN/HE

  17. What remains to be done • DIMR to be finished https://espace.cern.ch/rpps/wdp/docs/SPS%20Complex/Remplacement%20splitter%20TDC2 • ALARA committee if needed JL GRENARD EN/HE

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