Engineering Task Plan for Standard Hydrogen Monitoring System Operation Page: 1 of 24
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1. EC b, 0 5
ENGINEERING CHANGE NOTICE - ----- - -
Page 1 of E
2. ECN Category 3. Originator's Name, Organization, MSIN, 4. USQ Required? 5. Date
(mark one) and Telephone No.
Supplemental 1 Dennis J. McCain, Models and  Yes [X] No 10/25/99
Direct Revision [x) Inventory, R2-12, 373-1023 -
Change ECN  6. Project Title/No./Work Order No. 7. Bldg./Sys./Fac. No. 8. Approval Designator
Standby  Standard Hydrogen Monitoring N/A Q
9. Document Numbers Changed by this ECN 10. Related ECN No(s). 11. Related PO No.
(includes sheet no. and rev.)
HNF-SD-WM-ETP-227, Rev. 1 ECNs: 635570. 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 eLk. 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
This ECN is being generated in order to update the previous plan with Fiscal Year 2000
information and changes.
14a. Justification (mark one)
Criteria Change [X] Design Improvement  Environmental  Facility Deactivation 
As-Found  Facilitate Const  Const. Error/Omission [j Design Error/Omission [
14b. Justification Details
To maintain currency in maintenance and system requirements.
15. Distribution (include name, MSIN, and no. of copies)
See attached distribution.
STA 4 RELEASE
A - 0OV
A-7900-013-2 (05/96) GEF095
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MCCAIN, D.J. Engineering Task Plan for Standard Hydrogen Monitoring System Operation, report, November 11, 1999; United States. (digital.library.unt.edu/ark:/67531/metadc741009/m1/1/: accessed September 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.