Fisher Helium Purge Flow Control Valve and Relay Page: 1 of 18
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1. E 661411
ENGINEERING CHANGE NOTICE .-a-- -
Prge 1 of Er)
2. ECN Category 3. Originator's Name, Organization, MSIN, 4. USQ Required? 5. Date
(mark one) and Telephone No.
Supplemental T. Nuxall, CVDF, R3-86, [x] Yes  No 7/13/00
Direct Revision [x] 372-3739
Change ECN (1
Temporary 6. Project Title/No./Work Order No. 7. Bldg./Sys./Fac. No. 8. Approval Designator
Standby [1 SNF/W-441 CVDF SN
Cancel/Void [ Spent Nuclear Fuel 142-K
Cold Vacuum Drying
9. Document Numbers Changed by this ECN 10. Related ECN No(s). 11. Related PO No.
(includes sheet no. and rev.)
SNF-3879, Rev. 2, SNF-5953, Rev. 0 N/A N/A
12a. Modification Work 12b. Work Package 12c. Modification Work Complete 12d. Restored to Original Condi-
No. tion (Temp. or Standby ECN only)
 Yes (fill out Blk. N/A N/A N/A
[X] No (NA Blks. 12b, Design Authority/Cog. Engineer Design Authority/Cog. Engineer
12c, 12d) Signature & Date Signature & Date
13a. Description of Change
13b. Design Baseline Document?  Yes [X] No
SNF-3879, Revision for clarification of testing requirements.
SNF-5953, Revised wide flange beam, material and structural square tubing, material critical characteristic
acceptance criteria from "67-83 Rockwell Hardness B" to "67-83 Rockwell Hardness B or 119-159 Brinnell
USQ Number: AlV -00-12 6e
14a. Justification (mark one)
Criteria Change Design Improvement[X] Environmental Facility Deactivation
As-Found Facilitate Const Const. Error/Omission Design Error/Omission
14b. Justification Details
Clarification, modification to design criteria.
The design verification method for SC/SS components is by independent review in accordance with EN-6-
027-01. Documentation of this review is accomplished by the independent review approval signature
provided on page 2 of this ECN.
15. Distribution (include name, MSIN, and no. of copies)
See distribution sheet.
STA: A RELEASE
JU L 13 20
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Van Katwijk, Carl. Fisher Helium Purge Flow Control Valve and Relay, report, July 13, 2000; United States. (https://digital.library.unt.edu/ark:/67531/metadc733903/m1/1/: accessed May 21, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.