Interlock Defeat

System(s) Affected:
Services

Interlock to be Defeated:
Al-ALCW South Heat exchanger H15 and H16 valves closed

Implementation:	Number:
Date: 2024-04-24 Time: 09:30:00	2024-204
Implemented By: Eric Chapman
In Consultation With:

Status: Removed

Estimated Duration:
2 days

Reason for Defeat:
Al-ALCW offline with RAW leak in South Heat exchanger ME-31. Valves H15 and H16 fully closed to stop leak.

Number of Yellow Tags:
3

Location of Defeat Tag(s):
DCR

How Was Defeat Implemented?
Where is Defeat Located?:
RAW side valves H15 and H16 fully closed.

Describe Alternate Protection:
System offline. When restarted fully open H15 and H16. Al-ALCW shut down for RF Q1 resonator latch troubleshooting/lid up.

Fault Reports:

Work Permits:

Disables:

Interlock Defeat

Removal:	Number:
Date: 2024-05-01 Time: 09:45:00	2024-204
Removed by: Elena Bylinskaia

Status: Removed

Interlock Verification Method:
Visually confirmed valves are open

Number of Tags Removed:
4

Comments:

Eric Chapman: 2024-04-24 09:32:28.776382
Main discharge valve D10 and surge tank valve D2 closed as well.
Riley Schick-Martin: 2024-04-30 15:33:37.497888
H-18 and D-17 remain throttled under defeat #2023-668
Elena Bylinskaia: 2024-05-01 13:01:08.37538
Al-ALCW heat exchangers are back in their normal shutdown configuration. H-18 is closed, D-17 is throttled. All other valves are open.
Elena Bylinskaia: 2024-05-01 13:04:04.512625
Al-ALCW heat exchangers are back in their normal shutdown configuration. H-18 is closed, D-17 is throttled. All other valves are open.

Interlock Defeat / Device Disable Management System v1.5 (Driver)

Interlock Defeat

Interlock Defeat

Interlock Defeat / Device Disable
Management System v1.5 (Driver)