United States Nuclear Regulatory Commission - Protecting People and the Environment

ACCESSION #: 9508090166

                     Information & Support Services 
                             P. O. Box 3707
                         Seattle, WA  98124-2207

BOEING

August 1, 1995
G-1151-SJA-95-284

Document Control Desk
United States Nuclear Regulatory Commission 
Washington, D.C.  20555

Reference:     a)   Boeing Letter G-1151-RSO-92-365 dated August 31,
                    1992; R. S. Orr to the NRC Operations Center

               b)   NRC Letter Docket No. 99901227 dated August 12, 1992;
                    L. J. Norrholm to R. S. Orr; Subject: Response to 10
                    CFR 21 Inquiry

Dear Sir or Madam:

In accordance with the reference correspondence and 10 CFR 21, Boeing is
sending the NRC the attached error notice(s) received from our former
software suppliers.  Because of unknown current addresses, the following
former customers were not notified:

     Reactor Controls, Inc.

     Echo Energy Consultants, Inc.

     Nuclear Applications and Systems Analysis Company (Japan)

     Nuclear Power Services

Error notices have been sent to our other former customers.

Very truly yours,


Sandra J. Andrews
Nuclear Administrator
G-1151 M/S 7A-33
(206) 865-6248

Attachment(s): ANSYS Class3 Error Reports 95-44, 95-45, 95-46 and 95-47


ANSYS (Registered Trademark)    

                         ANSYS, Inc.
                         201 Johnson Road         Telephone 412.746.3304
                         Houston, PA 15342-1300   Facsimile 412.746.9494


                              July 25, 1995

Dear Class3 Error Recipient:

     Enclosed you will find ANSYS Class3 Error Reports 95-44, 95-45, 
95-46 and 95-47.

                              Sincerely,

                              ANSYS, Inc.


                              Prashant Ambe
                              Quality Assurance Manager


                  ANSYS Revision Identifier Description

     ANSYS revision identifiers consist of a major revision level, a
minor revision level, a correction level, and occasionally a special
version level.  An example of how this is constructed is shown below:

                             Figure omitted.

     Major revision level changes indicate that new features have been
added to the program and that some level of program architecture change
and/or file structure has occurred.  Minor revision level changes also
indicate that new features have been added to the program, but files are
upwardly compatible.  All known error fixes are included in both minor
and major revisions.  Changes to the correction level indicate that it is
primarily an error correction release.  Special version identifiers
indicate that one or more additional minor changes have been made to the
program, normally to circumvent an error.  Special versions are not
general releases to all ANSYS licensees, since they typically represent
errors occurring only on one system, a subset of our customers who have
specific graphics devices, etc.

     The ANSYS revision identifier(s) shown under "corrected in" on the
front side of this Class3 Error Report indicates the first possible
revision that could contain the correction.  A major program change
needed to fix an error can dictate that the next minor or major revision
will contain the fix rather than the next correction level.  For example,
when errors were being reported while Rev. 4.3A was the latest production
version, most Class3 error reports indicated that 4.3B was the "corrected
in" revision.  Others requiring significant code restructuring were
reported as fixed in 4.4.  Rev. 4.3B was never released, but Rev. 4.4
contained all error corrections noted as fixed in 4.3B.

     An identifier indicated under "corrected in" does not guarantee that
a general release of that revision of ANSYS will occur.  It does indicate
that the correction is known and implemented in the coding that would be
part of that general release.

                     Equivalent Product Identifiers

     The ANSYS family of products occasionally undergoes name changes
between revisions and/or changes in the functionality of derived products
(such as ANSYS-PC/LINEAR).  To minimize the potential for confusion in
these areas, the important product name equivalences (similar program
functionality and error content) are listed below.

     ANSYS/ED       contains all errors shown for      the full ANSYS
                                                       product, starting
                                                       at Rev. 5.0, and
                                                       beyond, unless
                                                       otherwise noted.

     PC/LINEAR      is equivalent to                   WS/LINEAR at Rev.
                                                       4.4A,
                                             and       ANSYS/LINEAR
                                                       starting at Rev.
                                                       5.0.

     PC/THERMAL     is equivalent to                   WS/THERMAL at Rev.
                                                       4.4A,
                                             and       ANSYS/THERMAL
                                                       starting at Rev. 
                                                       5.0.

     PREPPOST  contains relevant errors shown for      the full ANSYS
                                                       product, for
                                                       included pre- and
                                                       postprocessing
                                                       functionality


            ANSYS (Registered Trademark) CLASS3 ERROR REPORT

                                                       ERROR NO: 95-44

KEYWORDS:      DOCU      APDL      CENTRX/Y/Z     ELEMENT CENTROID

DESCRIPTION OF ERROR:

     The get functions CENTRX(n), CENTRY(n), and CENTRZ(n) always return
the element centroid location in the global Cartesian system, but the
documentation in the Commands Manual implies that the location returned
is in the active coordinate system (CSYS).


FIRST INCORRECT VERSION(S):*_/          CORRECTED IN:*_/

Rev. 5.1 Commands Manual                Rev. 5.2 Commands Manual



SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:


COMMENTS:

     The corresponding *GET command (*GET,Par,ELEM,n,CENT,X/Y/Z) does
return the centroid location in the active coordinate system.


AUTHOR/CORRECTOR:                               DATE:  July 24, 1995
                    Krishna Raichur

REVIEWED BY QA:                                 DATE:  July 24, 1995
                    Prashant Ambe

APPROVAL:                                       DATE:  July 24, 1995
                    John A. Swanson

*_/ If a product name is not included in the "first incorrect version",
the full ANSYS program is implied.  For products not listed, this error
does not apply, but see the reverse side for equivalent product
designations.

Unless noted otherwise, this error report also applies to all revisions
after the first incorrect one and prior to the corrected revision.  All
revisions after "corrected in" are corrected.  Manual corrections are
included in on-line documentation as appropriate.  Please see the reverse
side of this sheet for additional information on ANSYS revision
identifiers.

                                                  FORM SASI-QA25
                                                  DEC 19, 1988


            ANSYS (Registered Trademark) CLASS3 ERROR REPORT

                                                  ERROR NO: 95-45

KEYWORDS:      PREP7          SOLID MODEL    ASUM      VSUM

DESCRIPTION OF ERROR:

     ASUM of a sector of a "hollow" circular area and VSUM of a sector of
hollow cylindrical or spherical volumes with inner to outer radius ratio
of greater than .95 will calculate inaccurate areas/volumes.  As the
ratio of inner to outer radius increases toward 1, the results will
deteriorate significantly.


FIRST INCORRECT VERSION(S):*_/          CORRECTED IN:*_/

Rev. 5.0                                Rev. 5.2
Component Products Rev. 5.0A            Component Products Rev. 5.2



SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:


COMMENTS:


AUTHOR/CORRECTOR:                                 DATE:  July 21, 1995
                    Anton V. Mobley

REVIEWED BY QA:                                   DATE:  July 21, 1995
                    Prashant Ambe

APPROVAL:                                         DATE:  July 21, 1995
                    David Conover

*_/ If a product name is not included in the "first incorrect version",
the full ANSYS program is implied.  For products not listed, this error
does not apply, but see the reverse side for equivalent product
designations.

Unless noted otherwise, this error report also applies to all revisions
after the first incorrect one and prior to the corrected revision.  All
revisions after "corrected in" are corrected.  Manual corrections are
included in on-line documentation as appropriate.  Please see the reverse
side of this sheet for additional information on ANSYS revision
identifiers.

                                                  FORM SASI-QA25
                                                  DEC 19, 1988


            ANSYS (Registered Trademark) CLASS3 ERROR REPORT

                                                  ERROR NO: 95-46

KEYWORDS:      PSTRES         SSTIF          GUI

DESCRIPTION OF ERROR:

     The PSTRES and SSTIF commands are functionally similar and if they
are used together only the last command is active.

     When using the Analysis Options dialog box in the Graphical User
Interface (GUI), the SSTIF command has no effect because the PSTRES
command is executed subsequently, therefore turning off any effects of
the SSTIF command.  The menu path is: Solution (right arrow) Analysis
Options.


FIRST INCORRECT VERSION(S):*_/          CORRECTED IN:*_/

Rev. 5.0 Commands Manual                Rev. 5.2 Commands Manual
Rev. 5.0 Procedures Manual              Rev. 5.2 Procedures Manual
Rev. 5.1 (GUI)                          Rev. 5.2

SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:

     Use either the PSTRES command or SSTIF command.  but not both.  This
requires entering the SSTIF or PSTRES command after executing the
Analysis Options dialog box in the GUI.


COMMENTS:


AUTHOR/CORRECTOR:                            DATE:  July 21, 1995
                    David Conover

REVIEWED BY QA:                              DATE:  July 21, 1995
                    Prashant Ambe

APPROVAL:                                    DATE:  July 21, 1995
                    Mark C. Imgrund


*_/ If a product name is not included in the "first incorrect version",
the full ANSYS program is implied.  For products not listed, this error
does not apply, but see the reverse side for equivalent product
designations.

Unless noted otherwise, this error report also applies to all revisions
after the first incorrect one and prior to the corrected revision.  All
revisions after "corrected in" are corrected.  Manual corrections are
included in on-line documentation as appropriate.  Please see the reverse
side of this sheet for additional information on ANSYS revision
identifiers.

                                                  FORM SASI-QA25
                                                  DEC 19, 1988


            ANSYS (Registered Trademark) CLASS3 ERROR REPORT

                                                  ERROR NO:  95-47

KEYWORDS:   Pro/ENGINEER INTERFACE   THERMAL STRESS    OPTIMIZATION

DESCRIPTION OF ERROR:

     Design constraints for the thermal portion of a thermal/stress
optimization will be incorrectly defined for use in the design
optimization calculation.


FIRST INCORRECT VERSION(S):*_/          CORRECTED IN:*_/

ANSYS-/Pro/ENGINEER Interface 9501      ANSYS-Pro/ENGINEER Interface 9526



SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:


COMMENTS:

     The thermal results as viewed under "Reviewing Analysis Results" are
correct.


AUTHOR/CORRECTOR:                            DATE:  July 21, 1995
                    Robert W. Gorman

REVIEWED BY QA:                              DATE:  July 21, 1995
                    Prashant Ambe

APPROVAL:                                    DATE:  July 21, 1995
                    David Conover


*_/ If a product name is not included in the "first incorrect version",
the full ANSYS program is implied.  For products not listed, this error
does not apply, but see the reverse side for equivalent product
designations.

Unless noted otherwise, this error report also applies to all revisions
after the first incorrect one and prior to the corrected revision.  All
revisions after "corrected in" are corrected.  Manual corrections are
included in on-line documentation as appropriate.  Please see the reverse
side of this sheet for additional information on ANSYS revision
identifiers.

                                             FORM SASI-QA25
                                             DEC 19, 1988


*** END OF DOCUMENT ***
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