View source for PNO-I-86-005, on 860118,licensee Conducted Normal Reactor Shutdown After Discovering Potential for Overstressing Containment Penetration in Event of Postulated Emergency Condenser Steam Line Break.Evaluation Continuing

{{Adams
| number = ML20137K436
| issue date = 01/21/1986
| title = PNO-I-86-005:on 860118,licensee Conducted Normal Reactor Shutdown After Discovering Potential for Overstressing Containment Penetration in Event of Postulated Emergency Condenser Steam Line Break.Evaluation Continuing
| author name = Doerflein L, Hudson S
| author affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION I)
| addressee name = 
| addressee affiliation = 
| docket = 05000220
| license number = 
| contact person = 
| document report number = PNO-I-86-005, PNO-I-86-5, NUDOCS 8601240082
| document type = PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO,, TEXT-INSPECTION &amp; AUDIT &amp; I&amp;E CIRCULARS
| page count = 1
}}
{{#Wiki_filter:1 DCS No:   50220860118 Dato:     January 21, 1986 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-I-86-05 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance.      The information is as initially received without vorification or evaluation, and is basically all that is known by the Region I staff on this date.
Facility: Niagara Mohawk Power Corp.        Licensee Emergency Classification:
Nine Mile Point, Unit 1             Notification of Unusual Event Scriba, NY                          Alert Site Area Emergency Docket No. 50-220              _ _ General Emergency XX Not Applicable

==Subject:==
Reactor Shutdown Due to Potential Degradation of Primary Containment Integrity On January 18, 1986, the licensee conducted a normal reactor shutdown after they discovered the potential for overstressing a containment penetration in the' event of a postulated Emergency Condenser steam line break. The licensee was reperforming the analysis on the penetration gsard pipe in preparation for a future Emergency Condenser system modification when errors .n the original stress calculations were identified. Licensee evaluation of the situation is continuing.
The State of New York has been informed and the licensee has issued a press release.
CONTACT:    S. Hudson            L. Doerflein 315-342-4041         488-1183 OISTRIBUTION:
H. St.                           Phillips        E/W         Willste      Mail: ADM:0MB Chairman Palladino EDOMNBB     ~ NRR             IE          hMSS                 00T:Trans only Comm. Zech             PA                        OIA          RES Comm. Bernthal         ELD                       AE00 Ccem. Roberts Comm. Asselstine ACRS                  Air Rights                 INP0 p n, SECV                   SP                        NSACE CA PDR                    Regional Offices                TMI Resident Section R! Resident Of fice Licensee:
(Reactor Licensees)
Region I Form 83 (Rev. July,1984) 9601240002 060121 f  -ink-005        PDR h3}}

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