ML20081H333
ML20081H333 | |
Person / Time | |
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Site: | Diablo Canyon |
Issue date: | 10/28/1983 |
From: | Schuyler J PACIFIC GAS & ELECTRIC CO. |
To: | Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
References | |
10CFR-050.55E, 10CFR-50.55E, NUDOCS 8311070393 | |
Download: ML20081H333 (1) | |
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Category:DEFICIENCY REPORTS (PER 10CFR50.55E & PART 21)
MONTHYEARML17264A9381997-07-10010 July 1997
[Table view]Deficiency Rept Re Potential Safety Hazard Associated w/FM-Alco 251 Engin,High Pressure Fuel tube-catalog: 4401031-2 in Which Dual Failure Mode Exists.Caused by Incorrect Forming Process ML20094M6251995-11-21021 November 1995 Final Part 21 Rept of Investigation & Analysis of Suspect Fasteners Event 29257.B&G-Cardinal Discontinued Using Heat Treatment Equipment at Cardinal Facility Until Such Time That Satisfactory Mods Made to Hardware & Procedures ML20126J5961992-12-31031 December 1992 Part 21 Rept Re Potential Loss of RHR Cooling During Nozzle Dam Removal.Nozzle Dams May Create Trapped Air Column Behind Cold Leg Nozzle Dam.Mod to Nozzle Dams Currently Underway. 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ML20006C6681989-11-30030 November 1989 Nonproprietary WCAP-12416, Evaluation of Thermal Stratification for Diablo Canyon Units 1 & 2 Pressurizer Surge Line. 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,,3 PACIFIC GAS AND ELECTR,IC C'O M PANY IPGel ;
77 BEALE STREET . SAN FRANCISCO. C ALIFORNI A 94106 . {4 87 78 h4f11 ,, W X ,910 - + 07 d.O.SCHUYLER Ccttav ro L. L L R A T *0 4 October 28, 1983 Mr. John B. Martin, Regional Administrator U. S. Nuclear Regulatory Commission, Region V 1450 Maria Lane, Suite 210 ,
Walnut Creek, CA 94596-5368 I Re: Docket No. 50-323 Diablo Canyon Unit 2 i Notification of Defective Snubbers '
l
Dear Mr. Martin:
This letter confirms a telephone call on October 12,1983 at 9:30 AM between Robert A. Young and Charles 0. Coffer of PGandE and Dennis F. Kirsch of NRC Region V. The call reported that the Pacific Scientific Company had notified PGandE of possible defects in snubbers installed or planned for installation at Diablo Canyon Unit 2.
Pacific Scientific has identified possible defects in certain model PSA-3 snubbers, three of which have been installed in Unit 2. A 30-day written report will be submitted in accordance with 10 CFR 50.55(e) that describes the deficiency, analyzes the safety implications, and specifies corrective actions taken.
Sincerely, f . W. -<b v Q L ,. ; ,
J. O. Schuyler 8311070393 831028 PDR ADOCK 05000323 s PDR i 10 16-27