Information Notice No. 88-97: Potentially Substandard Valve Replacement Parts

                                  UNITED STATES
                          NUCLEAR REGULATORY COMMISSION
                             WASHINGTON, D.C.  20555

                                December 16, 1988

Information Notice No. 88-97:  POTENTIALLY SUBSTANDARD VALVE
                                   REPLACEMENT PARTS 


All holders of operating licenses or construction permits for nuclear power 


This information notice is being provided to alert addressees about reports 
concerning the manufacture and distribution of valve replacement parts for 
Masoneilan-Dresser Industries (M-D) valves that were determined not to be 
genuine M-D parts and possibly are substandard.  It is expected that recipi-
ents will review the information for applicability to their facilities and 
consider actions, as appropriate, to avoid similar problems.  However, sug-
gestions contained in this information notice do not constitute NRC require-
ments; therefore, no specific action or written response is required.

Description of Circumstances:

On October 21, 1988, Consumers Power Company (CPCo) submitted a 10 CFR Part 21 
report to the NRC regarding valve internals for M-D valves that were found not 
to be manufactured by an authorized M-D manufacturer.  CPCo reported that it 
had identified approximately 65 questionable valve internals (e.g., valve 
stems, plugs/discs, cages, seat rings, and retainer pins) after an M-D field 
service representative pointed out that several valve internal parts for an 
M-D turbine bypass valve at CPCo's Palisades Nuclear Plant were not genuine 
M-D parts.


During the 1986 Palisades refueling outage, CPCo sent the subject turbine by-
pass valve to an M-D authorized facility for refurbishment after experiencing 
leakage problems with the valve.  CPCo also sent to the M-D authorized 
facility the valve replacement parts since the parts were in-stock items at 
the Palisades warehouse.  After the valve was refurbished and reinstalled, 
CPCo continued to experience leakage problems with the valve.  However, CPCo 
decided to continue operating with the leakage and to wait until the 1988 
refueling outage to re-solve the problem.  

.                                                            IN 88-97
                                                            December 16, 1988
                                                            Page 2 of 2

During the 1988 refueling outage, CPCo decided to perform the valve refurbish-
ment at the Palisades plant and requested onsite technical support from M-D.  
During the valve disassembly process, the M-D field service representative 
pointed out that some of the valve internals had different dimensional and 
metallurgical characteristics from typical M-D parts.  The installed parts had
been provided by CPCo and installed in the bypass valve at the authorized M-D 
facility during the 1986 outage.  The M-D representative also identified ad-
ditional valve internal parts in the Palisades warehouse that he stated were 
different from typical M-D parts.  CPCo believes that all the parts came from 
the same purchase order.  Subsequent CPCo investigations determined that the 
authorized M-D distributor procured some of the valve parts from manufacturers
that are not authorized to make M-D parts.  

On November 18, 1988, M-D transmitted a letter to the NRC regarding this issue 
(Attachment 1) indicating that a potential for malfunction of M-D valves 
exists if parts manufactured by unauthorized companies are installed. 

The 10 CFR Part 21 notification submitted by CPCo, the attached M-D letter, 
and the NRC staff reviews have brought into question the ability of a valve to
perform its safety-related function when internal parts are substandard to the
valve manufacturer's authorized replacement parts.  Accordingly, addressees 
may wish to review whether they have an adequate basis for accepting valve 
replacement parts, especially those purchased for safety-related applications,
and to contact the appropriate manufacturers or distributors to confirm the 
authenticity of any questionable parts.

No specific action or written response is required by this information notice.  
If you have any questions regarding this matter, please contact one of the 
technical contacts listed below or the Regional Administrator of the appropri-
ate regional office.

                                   Charles E. Rossi, Director                
                                   Division of Operational Events Assessment
                                   Office of Nuclear Reactor Regulation

Technical Contacts:  Joe Petrosino, NRR
                     (301) 492-0979

                     Jaime Guillen, NRR
                     (301) 492-1170

1.  Letter to NRC from M-D
2.  List of Recently Issued NRC Information Notices
.                                                            Attachment 2 
                                                            IN 88-97 
                                                            December 16, 1988 
                                                            Page 1 of 1

                             LIST OF RECENTLY ISSUED
                             NRC INFORMATION NOTICES
Information                                  Date of 
Notice No._____Subject_______________________Issuance_______Issued to________

88-96          Electrical Shock Fatalities   12/14/88       All holders of OLs
               at Nuclear Power Plants                      or CPs for nuclear
                                                            power reactors. 

88-95          Inadequate Procurement        12/8/88        All holders of OLs
               Requirements Imposed by                      or CPs for nuclear
               Licensees on Vendors                         power reactors. 

88-94          Potentially Undersized        12/2/88        All holders of OLs
               Valve Actuators                              or CPs for nuclear
                                                            power reactors. 

88-93          Teletherapy Events            12/2/88        All NRC medical 

88-92          Potential for Spent Fuel      11/22/88       All holders of OLs
               Pool Draindown                               or CPs for nuclear
                                                            power reactors. 

88-91          Improper Administration       11/22/88       All holders of OLs
               and Control of                               or CPs for nuclear
               Psychological Tests                          power reactors and
                                                            all fuel cycle 
                                                            facility licensees 
                                                            who possess, use, 
                                                            import, export, or 
                                                            transport formula 
                                                            quantities of 
                                                            strategic special 
                                                            nuclear material. 

88-90          Unauthorized Removal of       11/22/88       All NRC licensees 
               Industrial Nuclear Gauges                    authorized to 
                                                            possess, use, 
                                                            manufacture, or 
                                                            industrial nuclear 

88-89          Degradation of Kapton         11/21/88       All holders of OLs 
               Electrical Insulation                        or CPs for nuclear
                                                            power reactors. 
OL = Operating License
CP = Construction Permit 

Page Last Reviewed/Updated Friday, May 22, 2015