ML20137E418: Difference between revisions

From kanterella
Jump to navigation Jump to search
(StriderTol Bot insert)
 
(StriderTol Bot change)
 
(One intermediate revision by the same user not shown)
Line 1: Line 1:
{{Adams
#REDIRECT [[AECM-85-0372, Forwards Interim Rept 85-M-017, Metallurgical Evaluation of Recirculation Piping Ctr Cross Surface Cracking Following Induction Heat Stress Improvement Grand Gulf Station Unit 1, Per 851115 Request]]
| number = ML20137E418
| issue date = 11/20/1985
| title = Forwards Interim Rept 85-M-017, Metallurgical Evaluation of Recirculation Piping Ctr Cross Surface Cracking Following Induction Heat Stress Improvement Grand Gulf Station Unit 1, Per 851115 Request
| author name = Dale L
| author affiliation = MISSISSIPPI POWER & LIGHT CO.
| addressee name = Denton H
| addressee affiliation = NRC OFFICE OF NUCLEAR REACTOR REGULATION (NRR)
| docket = 05000416
| license number =
| contact person =
| document report number = AECM-85-0372, AECM-85-372, TAC-60165, NUDOCS 8511270254
| package number = ML20137E425
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, UTILITY TO NRC
| page count = 2
}}
 
=Text=
{{#Wiki_filter:4-4 m))
EulkkiltilddB MISSISSIPPI POWER & LIGHT COMPANY Helping Build Mississippi P. O. B O X 164 0. J A C K S O N. MIS SIS SlP PI 39215-1640 November 20, 1985 NUCLE AR LICEN$1NG & $AFETY DEPARTMENT U. S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Washington, D. C. 20555 Attention:          Mr. Harold R. Denton, Director
 
==Dear Mr. Denton:==
 
==SUBJECT:==
Grand Gulf Nuclear Station Unit I Docket No. 50-416 License No. NPF-29 Preliminary Evaluation of Recirculation Crosses After Induction Heat Stress Improvement (IHSI)
AECM-85/0372 In the current Fall 1985 outag-c, Mississippi Power & Light (MP&L) elected to conduct IHSI on the Grand Gulf Nuclear Station (GGNS) Unit I recirculation system welds susceptible to integranular stress corrosion cracking.
Indications were revealed in the recirculation system cross forgings during post-IHSI inspections.
In a telephone conversation on November 15, 1985, Mr. Warren Hazeleton of your staff requested that MP&L submit a report on the status of MP&L's evaluation of the indications to dete.
The attachment to this letter is an interim report as requested presenting MP&L's p.eliminary investigation of the subject indications and an overview of the GGNS Unit 1 IHSI results. The report includes:
: 1. A background discussion of IHSI on the recirculation crosses.
: 2.      Field observations and actions.
: 3. Metallurgical evaluation.
: 4.      IHSI residual stress and' fracture mechanic analysis.
As presented in the attached report, one significant conclusion is that the grain boundary defects were not caused by IGSCC.
put228M BEEg6                                                  A
                                                                                        </u e S uth UtWties System J14AECM85111801 - 1
 
s.
      ''                                                                        AECM-85/0372 Page 2 If any additional information is needed, please contact this office.
Yours truly, L. F. Dale Director GCS/MLC/JGC: dam
: Attachment (Originals of . photographs to GGNS NRC Project Managers only:
L 1L. Kintner - NRR and R. E.. Carroll - Region II) cc:    Mr. T. H. Cloninger-(w/a)
Mr. 0. D. Kingsley, Jr. (w/a)
Mr. R. B. McGehee (w/a)
Mr. N. S. Reynolds (w/a)
                    'Mr. H.-L. Thomas (w/o)
Mr. R. C. Butcher (w/a)
Mr.-James M. Taylor,' Director (w/a)
Office of Inspection & Enforcement-U. S. Nuclear. Regulatory Commission Washington, D. C. 20555
                    'Dr. J. Nelson Grace, Regional Administrator (w/a)
U. S. Nuclear Regulatory Commission
                    ' Region II 101 Marietta St., N. W., Suite 2900 Atlanta,. Georgia 30323 l
J14AECM85111801      ~2
  .. -}}

Latest revision as of 07:21, 9 August 2022

Redirect to:

Retrieved from "https://kanterella.com/w/index.php?title=ML20137E418&oldid=3453952"