Interlock Defeat

System(s) Affected:
Targets

Interlock to be Defeated:
2A3 Protect and Beam Dump Water Flow interlocks

Implementation:	Number:
Date: 2024-07-05 Time: 17:15:00	2024-363
Implemented By: Eric Chapman
In Consultation With:

Status: Removed

Estimated Duration:
18 days

Reason for Defeat:
As explained by Carla Babcock, Water Flow trips are being caused by TM3 High Voltage sparks, not actual water flow. Defeated devices (5) are 2A3BD-WFS1, 2A3DSP-WFS2, 2A3TANK-WFS1, 2A3W1-WFS1, 2A3COL-WFS1.

Number of Yellow Tags:
1

Location of Defeat Tag(s):
DCR defeats board, Rack 5B - ISAC electrical room

How Was Defeat Implemented?
Where is Defeat Located?:
Rack 5B ISAC Elec Room. Protect pin 2 (tank wfs1), pin 4 (window wfs1), pin 13 (col wfs1) and Dump pin 1 (BD wfs1), pin 7 (DSP wfs2)

Describe Alternate Protection:
Device Thermocouples. Long term solution to come. Defeat bypasses to be removed after this target run is finished on July 23, 2024 as requested by Friedhelm Ames.

Fault Reports:
17130

Work Permits:

Disables:

Interlock Defeat

Removal:	Number:
Date: 2024-07-26 Time: 23:47:00	2024-363
Removed by: David Bandiera

Status: Removed

Interlock Verification Method:
Defeat Pins removed from ITE Target Protect and Dump interlock module in ISAC-I Electrical Room, Rack 5-B. Signals no longer show as defeated on XTpages 2A3P and 2A3D.

Number of Tags Removed:
2

Comments:

Eric Chapman: 2024-07-05 18:04:36.942221
BL2A3_WATERTEMP plothist and xstrip set up and running on cyccon10_2 screen to monitor temperatures of bypassed interlocks.