View source for PNO-V-87-032, on 870422,small Stones in Bottom Hemispherical Head of Hot Leg Side of Steam Generator 1 Discovered.Work Activities in Steam Generators Suspended Until Primary Side of Steam Generators 1 & 2 Inspected

{{Adams
| number = ML20209D384
| issue date = 04/23/1987
| title = PNO-V-87-032:on 870422,small Stones in Bottom Hemispherical Head of Hot Leg Side of Steam Generator 1 Discovered.Work Activities in Steam Generators Suspended Until Primary Side of Steam Generators 1 & 2 Inspected
| author name = Richards S, Zimmerman R
| author affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION V)
| addressee name = 
| addressee affiliation = 
| docket = 05000530
| license number = 
| contact person = 
| document report number = PNO-V-87-032, PNO-V-87-32, NUDOCS 8704290259
| document type = PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO,, TEXT-INSPECTION &amp; AUDIT &amp; I&amp;E CIRCULARS
| page count = 1
}}
{{#Wiki_filter:PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-V-87-32         Date: 04/23/87 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information presented is as initially received without verification or evaluation and is basically all that is known by Region V staff on this date.
FACILITY: Arizona Nuclear Power Project                     Emergency Classification Palo Verde Unit 3                                 Notification of Unusual Event DOCKET N0. 50-530                                 Alert Site Area Emergency General Emergency X Not Applicable

==SUBJECT:==
FOREIGN MATERIAL FOUND IN STEAM GENERATOR At about 3:00 pm on April 22, 1987, with the unit in Mode 5 and preparing to perform selccted preventive tube plugging in the steam generators, a worker found a number of small stones in the bottom hemispherical head of the hot leg side of No. 1 Steam Generator. Scaffolding and a wooden platform had recently been erected in the hot leg side in preparation for the tube plugging activity. Similar platforms and scaffolding w:re also erected in the cold leg side, as well as on both sides of the No. 2 Steam Generator. The licensee has suspended all work activities in the steam generators until the primary side of both steam generators can be inspected. Dams were installed in the hot and cold legs close to the steam generator on April 18, prior to scaffold and platform erection, to prevent material from inadvertently entering into the reactor coolant system piping. The licensee's investigation into whether the foreign material tas unintentionally brought into the steam generator, or whether it was a deliberate act, is currently ongoing. The resident inspector is witnessing the licensee's insp;ction of the primary side of the steam generators.
Unit 3 recently completed initial fuel load and initial criticality is scheduled for July 1987.
This information is current as of 2:00 pm PDT, April 23, 1987.
CONTACT:   R. Zimennan, Sr.                S. Richards (602)386-5760                   (415)943-3853 DISTRIBUTION H St.               NNBB       Phillips U $E/W      Willste      Air Rights Ff8 Mail:
Chairman Zech         EDO       NRR          IE        NMSS                       ADM:DMB Comm. Roberts         PA                     OIA       RES                 00T:Trans Only Comm. Asselstine      MPA                    AE0D Comm. Bernthal        OGC Comm. Carr            Regions:
SECY                            INP0 3/ss~ NSAC T 54 ACRS                            Licensee: %W CA                              (Reactor Licensees)           REGION V: FORM 211 POR                             Resident Inspector 3'1              (Revised 3/14/83)
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