PNO-II-86-091A, Unit 2 Feedwater Pipe Rupture Resulted in Two Deaths as of 861211,w/four Other Workers Hospitalized.Unit 1 Shutting Down.Extensive Erosion/Corrosion Found Inside Pipe. NRC Augmented Insp Team Onsite.Investigation Continuing: Difference between revisions

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{{Adams
#REDIRECT [[PNO-II-86-091, on 861209,reactor Trip Occurred & Feedwater Line Ruptured Upstream of Main Feedwater Pump 2-A,injuring 8 Personnel,Some Seriously.Caused by Break in Elbow on Mainfeed Pump Header.Unit Maintained Stable Condition]]
| number = ML20211R019
| issue date = 12/11/1986
| title = PNO-II-86-091A:Unit 2 Feedwater Pipe Rupture Resulted in Two Deaths as of 861211,w/four Other Workers Hospitalized.Unit 1 Shutting Down.Extensive Erosion/Corrosion Found Inside Pipe. NRC Augmented Insp Team Onsite.Investigation Continuing
| author name = Cantrell F, Croteau R
| author affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
| addressee name =
| addressee affiliation =
| docket = 05000280, 05000281
| license number =
| contact person =
| document report number = PNO-II-86-091A, NUDOCS 8612220221
| document type = PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO,, TEXT-INSPECTION & AUDIT & I&E CIRCULARS
| page count = 2
}}
{{#Wiki_filter:I D;cember 11, 1986 PRELIMI' NARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE PNO-II-86-91A This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information is as initially received without verifi-cation or evaluation, and is basically all that is known by the Region II staf f on this date.
FACILITY: Virginia Electric & Power Company          1.icensee Emergency Classification:
Surry Units 1 and 2                           Notification of Unusual Event Docket No. 50-280/50-281                      Alert Surry, Virginia                                Site Area Emergency General Emergency X Not Applicable
 
==SUBJECT:==
UPDATE ON DECEMBER 9 SECONDARY SYSTEM PIPE FAILURE AND FATALITIES This information updates PNO-II-86-91.
The Unit 2 feedwater pipe rupture has now caused two fatalities, and four other workers remain hospitalized in serious to critical condition with burns.
Unit I remained at 100 percent power for an additional day after the accident but commenced shutting down last night at 5:30 p.m. (EST) as a precaution to check systems similar to those affected in Unit 2. Unit I was at 400 degrees (F) at 8:00 a.m. this morning and is expected to be in cold shutdown later this afternoon.
Tha NRC site team which was dispatched to the site on December 9 was officially implemented as an Augmented Inspection Team (AIT) on December 10. Additionally, the NRC pipe crack study group composed of persons knowledgeable in metallurgy, water hammer and fracture mecharics, will be briefed on the event during a site visit tomorrow.
Preliminary examination of the pipe appears to indicate extensive erosion / corrosion inside the pipe. Other areas of investigation include condition of feedwater check valves, crosion of other piping, and other conditions that could have contributed to the pipe rupture.
M:dia interest continues.      Both the licensee and the NRC are continuing to respond to num2rous media inquiries, and an NRC information officer remains at the site.
Region 11 is continuing to keep the Commonwealth of Virginia fully informed.
This information is current as of 11:00 a.m. (EST) on December 11.
 
==Contact:==
R. Croteau, 242-4668                      F. Cantroll, 242-5534 0612220221 061211 PDH    ILE PNO-11-06-091A PDR                                                          4, SW
 
DISTRIBUTION:
H. Street ..                                                    MNBB      Phillips          E/W    Willste MAIL:
Chairman Zech                                                ' EF      NRR              TE~    NMSS    ADM:DMB Comm. Roberts                                                PA                          OIA    RES    DOT: Trans Only Comm. Asselstine                                              MPA                        AE00          Applicable State Comm. Bernthal                                                  ELD Comm. Carr                                                    Air Ri Lts h                  INP0-k.,8[
SECY                                                              SP                    NSAC ACRS                                                                                                                      g R                                    Regions:          k[-@ R @ ~
b-    I Licensee:            Lf.B (Reactor Licensees)
Applicable Resident Site (((/h I
4 4
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