Availability of Reactor Vessel Integrity Database

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

                                August 4, 1995



All holders of operating licenses or construction permits for nuclear power


The U.S. Nuclear Regulatory Commission (NRC) is issuing this administrative
letter to inform addressees of the availability of the Reactor Vessel
Integrity Database (RVID).  This administrative letter does not transmit or
imply any new or changed requirements or staff positions.  No specific action
or written response is required.


As a result of the NRC staff review of licensee responses to Generic Letter
(GL) 92-01, Revision 1, a comprehensive database was developed to compile and
record summaries of the materials properties of the reactor vessel beltline
materials for each plant.  This database is known as the RVID.  

In addition to the licensee responses to GL 92-01, the following documents
were included in the review process and development of the RVID:  surveillance
capsule reports, documents referenced in the GL 92-01 submittals, and, as
applicable, pressurized thermal shock (PTS) submittals and responses to NRC
staff requests for additional information.  The staff reviewed the data from
these source documents and documented them in the RVID tables.


The RVID has been set up so that there are four tables for each plant:  a
background information table, a chemistry data table, an upper shelf energy
table, and a pressure-temperature limits table for boiling water reactors or a
PTS table for pressurized water reactors.  The information categories in each
table are either direct inputs or values calculated from these inputs. 
Explanations for each of the information categories are contained in the
operating manual accompanying the diskettes.  References follow each table to
document the original sources of data and to provide additional information.

The RVID includes sort and data search capabilities.  The user can select a
desired grouping of plants and then specify up to 10 information categories to
search and list.  Features which would allow updating of the information by
users have not been included.
                                                            AL 95-03
                                                            August 4, 1995
                                                            Page 2 of 2

It is not NRC staff intent to provide assistance with the computerized aspects
of operating the RVID.  In addition to the detailed explanations given in the
manual, "help" features have been included throughout the RVID.  Also, at the
public workshop between NRC and the Nuclear Energy Institute on reactor
pressure vessel integrity, held July 13, 1995, there was an RVID
demonstration.  The staff encourages comments from users regarding the RVID. 
The RVID will be updated periodically to reflect the latest information
available as NRC resources allow.  

Copies of the RVID and the RVID operations manual may be obtained on disc by
sending a written request to:  

                        RVID Project Manager
                        U.S. Nuclear Regulatory Commission-MS O7D4
                        Washington, DC  20555.  

For those who have incompatible systems or are unable to run the RVID, a hard
copy of the database information will be available by sending a written
request to the above address.

The RVID will be available in diskette form.  This is a stand alone software
package.  System requirements for running the RVID are:  a 386 personal
computer (486 preferred), DOS version 6.0 or above, and 6 to 8 megabytes RAM. 
A color monitor and mouse are also preferred.  A manual will accompany the

This administrative letter requires no specific action or written response. 
If you have any questions about this letter, please contact the contact listed
below or the appropriate Office of Nuclear Reactor Regulation (NRR) project

Disclaimer Notice

This database was prepared as an account of work sponsored by an agency of the
United States Government.  Neither the United States Government nor any agency
thereof, or any of their employees, makes any warranty, expressed or implied,
or assumes any legal liability of responsibility for any third party's use, or
the results of such use, of any information, apparatus, product, or process
disclosed in this database, or represents that its use by such third party
would not infringe privately owned rights.

                              /S/'D BY DMCRUTCHFIELD

                              Dennis M. Crutchfield, Director
                              Division of Reactor Program Management
                              Office of Nuclear Reactor Regulation

Contact:  Carolyn Fairbanks, NRR
          (301) 415-2712

List of Recently Issued NRC Administrative Letters

Page Last Reviewed/Updated Tuesday, March 09, 2021