CLASSE Safety Handbook

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If CESR interlocks are ON but CESR is OFF
  • Tours are normally permitted only during access or down days when a radiation survey has been done and magnet power systems have been secured.
  • A tour of the CHESS area may be possible if that area is in Bypass; check with the CHESS operator.
  • In rare situations the possibility of a tour in specific CESR locations (most commonly only to the L0 catwalk, not beyond the chained-off section just south of the stairway to CLEO) during an interlock-set access should be discussed with the CESR operator, preferably well ahead of the tour time. Granting of permission for such a tour should not be assumed, may depend on several conditions, and specific limitations may be imposed.
  • If interlocks are set, each tour participant would need a white key to enter the CESR-synchrotron perimeter and understand how to use it: each key holder is responsible for the timely return of the white key after the tour.
  • At the CESR operator's discretion, only the guide would carry a white key and intentionally break the interlock on the way into a controlled area. In this situation both the guide and operator would independently keep headcounts prior to entering and after exiting the controlled area, verifying that everyone is accounted for.
Topic revision: r5 - 06 Apr 2012, bkh
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