15 February 2005

APS TECHNICAL UPDATE - No. 31 (Revised)

Subject: Storage Ring Access for Emergency Repairs Policy

EMERGENCY ACCESS POLICY

If an ID and/or front-end fault prevents a beamline from conducting normal operations, but has no operational impact on the storage ring or presents no safety implications to the facility or personnel, any access to the ring to diagnose and repair the fault will be made under the following conditions:

  1. If there is a machine intervention period planned within 72 hours of the time the fault occurs, then the repair will occur during the machine intervention period.

    2.  

  2. If there is not a machine intervention period within 72 hours of the fault, then the local beamline group , having demonstrated a significant scientific impact due to the fault, can request an access starting at 4am with exit from the tunnel at a time that will allow beam injection by 7am. Such a request must be made by noon on the day prior to the access.  If the problem is well understood and the APS agrees that a three hour intervention period is sufficient to solve the problem, then upon approval, the APS will notify users of the access by 3 pm and it will be coordinated at the daily 4 pm MCR meeting.

The AOD Director or his designee will review and approve all such repair requests.

For additional information contact:

Julie Cross - User Technical Interface
jox@aps.anl.gov
Telephone - 630.252.0592

Updated: October 4, 2007

distribution: CAT-Net