United States Nuclear Regulatory Commission - Protecting People and the Environment

Morning Report for April 22, 2003



                       Headquarters Daily Report

                         APRIL 22, 2003

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                    REPORT             NEGATIVE       
                    ATTACHED           INPUT RECEIVED  

HEADQUARTERS            X                                      
REGION I                                   X                   
REGION II                                  X                   
REGION III                                 X                   
REGION IV                                  X   

                
PRIORITY ATTENTION REQUIRED  MORNING REPORT - HEADQUARTERS APRIL 22, 2003

Licensee/Facility:                     Notification:

Part 21 Database                       MR Number: H-03-0017
Nine Mile Point, Unit 2                Date: 04/22/03
                                                                          

Subject: Part 21-Initial Notification-MSIV disc separated from its stem  
         allowing the disc/piston assembly to drop into the valve seat   


Discussion:

VENDOR: Rockwell                        PT21 No.: 2003-005-00            
                                                                         
DATE OF DOCUMENT: 01/07/03              ACCESSION NUMBER: EN39362        
                                                                         
SOURCE DOCUMENT: LETTER                 REVIEWER: RORP, R. Caldwell      
                                                                         
                                                                         
On November 11, 2002, at approximately 0515 hours, with Nine Mile Point  
Unit 2 (NMP2) at 100 percent power, an outboard main steam isolation     
valve (MSIV) disc separated from its stem allowing the disc/piston       
assembly to drop into the valve seat. This led to the rapid loss of flow 
in the "B" Main Steam Line resulting in a steam pressure transient.      
                                                                         
As result of increasing reactor pressure, the reactor scrammed due to a  
"Reactor Pressure High" trip signal. After the reactor scram, all MSIVs  
received closure signals and closed. The cause of the closure signals to 
the MSIVS was a "Main Steam Line High Flow' MSIV auto-isolation signal.  
The high main steam line flow was caused by the increased reactor        
pressure and flow being restricted to three of the four main steam lines.
                                                                         
Contact:    R. Caldwell, NRR                                             
            301-415-1243                                                 
            E-mail: rkc1@nrc.gov                                         
                                                                         

HEADQUARTERS      MORNING REPORT     PAGE  2          APRIL 22, 2003

Licensee/Facility:                     Notification:

Part 21 Database                       MR Number: H-03-0020
Aalborg                                Date: 04/22/03
                                                                          

Subject: Part 21 - Initial Notification - Potential defect in Aalborg    
         Model GFM671S mass flow rate meters                             


Discussion:

VENDOR: Holtec International                PT21 No.: 2003-008-00        
                                                                         
DATE OF DOCUMENT: 01/03/03                  ACCESSION NUMBER: EN39639    
                                                                         
SOURCE DOCUMENT: LETTER                     REVIEWER:  RORP, R. Caldwell 
                                                                         
Holtec International reports a potential defect in Aalborg model GFM671S 
mass flow rate meters. The instruments are used to verify the correct    
amount of helium is backfilled into dry spent fuel storage canisters.    
These instruments were never used on a Holtec cask system containing     
spent nuclear fuel because the problem was discovered during the         
preparatory phase before fuel loading. Therefore, no other Holtec client 
is affected for past loading operations.                                 
                                                                         
Four meters were purchased for use at the Trojan nuclear plant to measure
the amount of helium gas injected into a loaded Holtec dry spent fuel    
Multipurpose Canister (MPC). It was determined that erroneous data was   
coming from the flow rate meters because the published correction factors
for helium/nitrogen were incorrect for this model flow meter. Aalborg is 
developing new helium correction factors. In the interim, they have      
committed to using helium to calibrate all flow meters destined for use  
in measuring helium.                                                     
                                                                         
For future MPC loading operations, Holtec users, as well as other        
purchasers and licensees are being notified via this report that Aalborg 
flow meters procured for use in important-to-safety activities may not be
calibrated. The calibration of Aalborg flow meters should be confirmed   
prior to use in important-to-safety activities.                          
                                                                         
Contact:    R. Caldwell, NRR                                             
            301-415-1243                                                 
            E-mail: rkc1@nrc.gov                                         


HEADQUARTERS      MORNING REPORT     PAGE  5          APRIL 22, 2003

Licensee/Facility:                     Notification:

Part 21 Database                       MR Number: H-03-0021
Carboline Company                      Date: 04/22/03
                                                                          

Subject: Part 21 - Initial Notification - Deficiencies in coating film   
         affecting its application and aesthetic properties              


Discussion:

VENDOR: Carboline Company              PT21 No.: 2003-007-00             
                                                                         
DATE OF DOCUMENT: 02/17/03             ACCESSION NUMBER: ML030550248     
                                                                         
SOURCE DOCUMENT: LETTER                REVIEWER: RORP, J. Foster         
                                                                         
                                                                         
The hard settling of Carboguard 890 Part B would result in a mixed       
product that would have lower pigment volume concentration (PVC) than    
standard material that has been uniformly dispersed. Potential           
deficiencies would be a lack of film build during application as a result
of a lower initial viscosity and the fact that some particles from the   
hard settling may have been dispersed into the mixed product. These      
particles could result in the clogging of spray gun tips or having       
particles embedded into the applied coating, which are aesthetically     
unpleasing. Overall the lack of pigment in the coating film affects the  
application and aesthetic properties of the coating and not the          
performance properties. The primary criteria for the epoxy coating's     
performance are that the stoichiometry of epoxy resin to amine curing    
agent are not changed by more than 10%. Based upon a prior non-nuclear   
occurrence we know that the hard settling does not alter the             
stoichiometry of the coating and the cure of the product will be within  
the parameters designed by the formulating chemist. Based upon prior     
testing of numerous coatings for use in nuclear power plants we have not 
seen any detrimental performance when lower PVC coatings were evaluated. 
Resin rich coatings are typically gloss coatings and they aid in         
radiation decontamination and chemical resistance. As such, Carboline    
does not feel that the performance of the coating will be adversely      
affected.                                                                
                                                                         
A database has been created (by Carboline) documenting all shipments of  
the affected batches made within the 2002 calendar year to present;      
approximately 30 utilities/customers are affected. All customers who our 
records indicate have been shipped batches 2A9266L, 2A9275L, and 2H9352L 
shall be notified promptly. Carboline Company is requesting that         
customers review their stock of Carboguard 890 Part B and return the     
affected batches for replacement.                                        
                                                                         
Contact:    J. Foster, NRR                                               
            301-415-3647                                                 
            E-mail: jwf@nrc.gov                                          

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