CAT Chat Minutes

October 18, 2004

 

Information and Follow-up
User said he received a page that announced power was out at the APS.   This page came through at 11:30 p.m.   What triggers the auto-page?  

Roger will look into what sets off the auto-page system.   There were, however, only two telephone calls from users questioning the auto-page.   When a page goes out that you do not understand, or need clarification regarding, contact your floor coordinator.

General Information
Machine Stats
            Delivered beam:   291 hrs.
            Percentage of scheduled time:   98.41%
            Downtime during period:   4.72 hrs.
            Mean time between faults:   145.7 hrs.

Faults:

#   1   10/05 08:00   To   10/11 15:59   151.99     Int Dump: End of Period     0.00
                                                                        0.00
#   2   10/12 08:00   To   10/13 05:17    21.28    22BM PSS Fault       [SI]   1.86 Failed processor. SI-1hr.14min, Other-37min.
#   3   10/13 07:08   To   10/17 23:05   111.95    Power Bump     [ ComEd]   2.86 ComEd transformer failure, recovery, refill.
#   4   10/18 01:56   To   10/18 08:04     6.13    Fill Ongoing                0.00  

Beamtime Downtime Summary by APS Groups, 10/05-18/2004:

DIN

Date

Beamline

Status

Duration

Group

Description

Resolution

453

10/05/04

34-ID

Closed

3 hr 21 min

ASD-SI

Recurring Minor Fault #387 FE_PRESS_TO_0

ASD-SI installed diode across relay coil. Fault indicating insufficient air pressure in the pneumatic manifold stopped occurring. The system was tested for proper operations by ASD-SI.

456

10/08/04

31-ID

Closed

47 min

ASD-SI

BP reported that station D door close button for was not working; could not complete a search-and-secure.

PSS technician filed Work Request #16145 for adjustment of door close button hardware. Button adjusted and tested for proper operation.

460

10/12/04

24-ID

Open

7 day 0 hr 0 min

ASD-SI

Possible pneumatic problem with PS1. FEEPS/PSS has been checked and appears to be sending the signals requesting that the shutter open. (per P. McNamara)

Pending Resolution: Replacement of PS1 solenoid.

461

10/12/04

13-ID

Closed

2 hr 12 min

ASD-SI

When users attempt to open PS2, FEEPS trips and PS1 closes. No vacuum valves close, and no PSS faults occur. (Problem occurred at 16:23 on 10/11/04 after the start of Machine Studies.)

ASD-SI fixed loose connection within PSS FERDP, which was not passing PS2 open signal to FE-EPS.

463

10/13/04

22-BM

Closed

2 day 7 hr 20 min

ASD-SI

Stored beam was lost due to Chain B fault at 22-BM. Indications on Chain B screen showed "Chain A Link Down."  The beamline was taken globally offline and SI personnel called.

ASD-SI replaced Chain A Processor Shelf & performed full revalidation of beamline.

464

10/14/04

01-BM

Closed

27 min

APS-PA

User cannot access Experiment Controls (computers) while PFS, on boom lifts, are in the immediate area cleaning the Visitors' Gallery windows for VIP Visit. This downtime entry is requested by CAT.

PFS completed task of cleaning windows and have left the area. Access to 1-BM control area has been allowed.

465

10/16/04

14-ID

Closed

4 hr 8 min

ASD-SI

Minor fault 442: B_DR1_CLSE_FAIL cannot be reset. PSS on-call T. Dawson is on his way in. WR #16195 submitted.

ASD-SI adjusted 14-ID-B station door. During troubleshooting, observed slow operation of Station B shutter. Time was spent ensuring that shutter functioned properly. Beamline operations restored upon completion of work.

Safety:   Roger reported discussion at OPS Directorate concerning the recently released memo regarding the accident at SLAC (memo to ANL Division Directors and Department Heads from A. Karalius, EQO, and J. Zurad, Electrical Safety Committee, calling for an immediate halt to “hot” electrical work).   Greg Markovich said the electrical safety committee is in the process of drafting a memo requesting a modification to this order to allow low-voltage level work to be performed.  

Bruce Glagola said that the overtime budget looks dismal; he will not schedule radioactive sample work on weekends.   Nena Velamparampil was introduced to the group.   As User Experiment Safety Program staff, she will be handling experiment approvals (especially biological approvals).