Interlock Defeat

System(s) Affected:
Services

Interlock to be Defeated:
Al-ALCW Heat Exchangers Valves H-18 closed and D-17 throttled

Implementation:	Number:
Date: 2023-08-15 Time: 09:45:00	2023-462
Implemented By: Riley Schick-Martin
In Consultation With:

Status: Removed

Estimated Duration:
3 days

Reason for Defeat:
Main magnet OFF for UCN measurements

Number of Yellow Tags:
3

Location of Defeat Tag(s):
1. DCR defeat board

2. H-18 valve

3. D-17 valve

How Was Defeat Implemented?
Where is Defeat Located?:
SAB3 Pump Room. Al-ALCW Heat Exchanger Valves H-18 closed and D-17 throttled.

Describe Alternate Protection:
Cooling present at reduced rate.

Fault Reports:

Work Permits:

Disables:

Removal:	Number:
Date: 2023-08-16 Time: 12:45:00	2023-462
Removed by: Riley Schick-Martin

Status: Removed

Interlock Verification Method:
Main magnet back on. Heat exchanger gate valves fully open.

Number of Tags Removed:
1

Comments:

Dale Nagra: 2023-08-16 12:45:19.992924
UCN job completed.

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