ML20140C238
| ML20140C238 | |
| Person / Time | |
|---|---|
| Site: | Braidwood  |
| Issue date: | 06/08/1984 |
| From: | Youngblood B Office of Nuclear Reactor Regulation |
| To: | Farrar D COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 8406190171 | |
| Download: ML20140C238 (3) | |
Text
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JUN 8 M4 Docket Nos.: 50-456 DIST: _ n y and 50-457 D6ck,et2 File" Local PDR
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Mr. Dennis L. Farrar PRC System LB#1 Rdg Director of Nuclear Licensing JStevens MRushbrook Commonwealth Edison Company LWheeler OELD, Attorney (r\\g@w OcASl Post Office Box 767 Chicago, Illinois 60690
Dear Mr. Farrar:
OM Ch
Subject:
ASME Code Case N-401 By letter. dated May 24, 1984, Commonwealth Edison Company (CECO) requested plant-specific approval to use ASME Code Case N-401, " Eddy Current Examination-Recording Data," at the Braidwood Station. This Code Case was passed by the Main Committee of the ASME on November 4,1983 and subsequently was approved by the ASME Council. Code Case N-401 is not referenced in Regulatory Guide
'1.147, " Inservice Inspection Code Case Acceptability, ASME Section XI,"
because of.the relatively recent approval by the ASME Council.
For the preservice examination of the steam generator tubes at Brafdwood Units 1 and 2, CECO plans to use a ZETEC Model MIZ-18 eddy current instrument which records digitized data on magnetic tape. CECO considers this system to-be superior to other available instruments because it allows for more accurate recording of the data. However, examinations with the MIZ-18 instrument will not be in compliance with Article IV-5000 of Section XI of the ASME Code which requires that data from tube examinations be recorded on both magnetic tape and strip chart as the test probe tnaverses the tube.
In Code Case N-401, the ASME has approved the use of digitized collection and storage of data as the permanent record as an alternative to magnetic tape and strip chart recording.
The Division of Engineering staff has reviewed Code Case N-401, found it technically acceptable, and recently recommended that the document be referenced in Regulatory Guide 1.147. Based on this conclusion, CECO's request to use Code Case N-401 at the Braidwood Station has been approved.
For further information or clarification contact the Braidwood Project Manager, Janice A. Stevens, at (301) 492-7144.
Sincerely, k
B.
. Youngblood, Chief Licensing Branch No.1 Division of Licensing cc: See next page p[0pi
,fp CONCURRENCES:
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JUN 8 1984 Docket Nos.: 50-456 and 50-457 Mr. Dennis L. Farrar Director of Nuclear Licensing Commonwealth Edison Company Post Office Box 767 Chicago, Illinois 60690
Dear Mr. Farrar:
Subject:
ASME Code Case N-401 By letter dated May 24, 1984, Conrnonwealth Edison Company (CECO) requested plant-specific approval to use ASME Code Case N-401, " Eddy Current Examination-Recording Data," at the Braidwood Station.
This Code Case was passed by the Main Committee of the ASME on November 4,1983 and subsequently was approved by the ASME Council. Code Case N-401 is not referenced in Regulatory Guide 1.147, " Inservice Inspection Code Case Acceptability, ASME Section XI,"
because of the relatively recent approval by the ASME Council.
For the preservice examination of the steam generator tubes at Braidwood Units 1 and 2, CECO plans to use a ZETEC Model MIZ-18 eddy current instrument which records digitized data on magnetic tape. Ceco considers this system
~
to be superior to other available instruments because it allows for'more accurate recording of the data. However, examinations with the MIZ-18 instrument will not be in compliance with Article IV-5000 of Section XI of the ASME Code t.
which requires that data from tube examinations be recorded on both magnetic tape and strip chart as the test probe traverses the tube.
In Code Case N-401, the ASME has approved the use of digitized collection and storage of data as the permanent record as an alternative to magnetic tape and strip chart recording.
The Division of Engineering staff has reviewed Code Case N-401, found it technically acceptable, and recently recommended that the document be referenced in Regulatory Guide 1.147. Based on this conclusion, Ceco's request to use Code Case N-401 at the Braidwood Station has been approved.
t For further information or clarification contact the Braidwood Project Manager, JaniceA.Stevens,at(301)492-7144.
j Since 1,
i M%i u
B. J. Ycbngblood,90.-1 1Chief i
Lice sir g Branch Div ior, of Licensing cc: See next page
y BRAIDWOOD Mr. Dennis L. Farrar Director of Nuclear Licensing Commonwealth Edison Company Post Office Box 767 Chicago, Illinois 60690 cc:
Mr. William Kortier Ms. Lorraine Creek Atomic Power Distribution Route 1, Box 182 Westinghouse Electric Corporation Manteno, Illinois 60950 Post Office Box 355 Pittsburgh, Pennsylvania 15230 Jane M. Whicher, Esq.
109 N. Dearborn Street Joseph Gallo, Esq.
Chicago, Illinois 60602 Isham, Lincoln & Beale 1120 Connecticut Ave., N. W.
JoAnne G. Bloom, Esq.
Suite 840 Isham, Lincoln & Beale Washington, D. C. 20036 Three First National Plaza Suite 5200 C. Allen Bock, Esq.
Chicago, Illinois 60602 Post Offices Box 342 Urbana, Illinois 61801 Thomas J. Gordon, Esq.
Waaler, Evans & Gordon 2503 S. Neil
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Champaign, Illinois 61820 Ms. Bridget Little Rorem Appleseed Coordinator 117 North Linden Street Essex, Illinois 60935 Mr. Edward R. Crass Nuclear Safeguards and Licensing Division Sargent & Lundy Eng'.neers 55 East Monroe Street Chicago, Illinois 60603 U. S. Nuclear Regulatory Commission Resident Inspectors Office RR#1, Box 79 Braceville, Illinois 60407 Mr. James G. Keppler U. S. NRC Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137
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