ML20093D553

From kanterella
Jump to navigation Jump to search
Responds to 840327 Request for Confirmation That as-built Analysis Performed of All Flued Heads in safety-related Sys in Compliance of Appropriate Sections of ASME Code. Evaluation Verified Code Acceptability
ML20093D553
Person / Time
Site: Fermi DTE Energy icon.png
Issue date: 07/11/1984
From: Jens W
DETROIT EDISON CO.
To: Youngblood B
Office of Nuclear Reactor Regulation
References
EF2---69-202, NUDOCS 8407170057
Download: ML20093D553 (1)


Text

Wayne H. Jens Vce PrevdeM Nuclear Operations Formi 2 6400 North Dme H.ghww I n (Newport, 013) 586 %chsgan 4150 48166 July ll, 1984 EF2 - 69,202 Director of Nuclear Reactor Regulation Attention: Mr. B. J. Youngblood, Chief Licensing Branch No. 1 Division of Licensing U.S. Nuclear Regulatory Commission Washington, D. C. 20555

Dear Mr. Youngblood:

Reference:

(1) Fermi 2 NRC Docket No. 50-341 (2) Letter from B. J. Youngblood to W. H. Jens, " Preliminary Evaluation of the IDVP Performed by Cygna Energy Services for the Fermi-2 Facility",

March 27, 1984

Subject:

Code Compliance Verification of ASME Class I Flued Heads Enclosure 2, Item 1 of Reference 2 requested Detroit Edison to confirm that an as-built analysis was performed of all flued heads in safety related systems in compliance with the appropriate sections of the ASME Code. Detroit Edison has completed an ASME Code Section III, NB-3200 evaluation of all ASME Class 1 flued heads. The evaluation verified the code acceptability of the critical section of the flued heads. Flued head loads f roia the as-built piping stress reports were used in this analysis. Edison did not observe the emergency condition as governing the design capability of the Fermi 2 flued heads in any instance. Th'e upset condition (i.e., ratio of calculated stress to code allowable stress) was found to be critical for primary stress evaluation purposes in all instances.

If you have any questions, please contact Mr. O. K. Earle, (313) 586-4211.

Sincerely, 8407170057 840711 PDR ADOCK 05000341 /'

A PDR '

cc: Mr. P. M. Byron Mr. M. D. Lynch USNRC, Document Control Desk f Washington, D. C. 20555 g g$7 I

':o

. . - - _