United States Nuclear Regulatory Commission - Protecting People and the Environment

ACCESSION #: 9510250397

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

BOEING

October 10, 1995
G-1151-SJA-95-389

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

     Tenera Engineering Services *_/

Error notices have been sent to our other former customers.

*_/ Please note: GTICES Program Report Forms 95.16 through 95.23 and
ANSYS Class3 Error Reports 9548 through 95-51 have been returned to
Boeing by the Post Office as undeliverable.  Our efforts to obtain a
current mailing address for Tenera Engineering have been unsuccessful.

Very truly yours,

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

Attachment(s): ANSYS Class3 Error Reports 95-52, 95-53, 95-54, and 95-55.
               Also, ANSYS Class 3 Error Summary Reports for Rev. 5.0A
               and Rev. 5.1.

ANSYS [Registered Trademark]

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

                                        September 27, 1995

Dear Class3 Error Recipient:

     Attached you will find ANSYS Class3 Error Reports 95-52, 95-531,
95-54 and 95-55.

     For your convenience, also enclosed with this mailing are ANSYS
Class3 Error Summary Reports for Rev. 5.0A and Rev.  5.1, sorted both by
keyword and by error report number.

                                        Sincerely

                                        ANSYS, Inc.

                                        William J. Bryan
                                        Quality Assurance Manager

Attachment

                  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 "5.0A-10" 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
pan 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: 95-52

KEYWORDS:                MESH                MIDSIDE NODES

DESCRIPTION OF ERROR:

     1.   Using an all-quadrilateral mapped mesh of a 3-sided surface
(AMESH; ESHAPE,2) using a midside-noded element type (such as SHELL93)
may not follow the out-of-plane curvature of the area for the mid-node
placement, but instead may place the mid-nodes linearly between their
neighboring corner nodes.

     2.   Brick element mapped meshes bounded by any 3-sided surface
(VMESH; ESHAPE,2) using midside-noded element types (such as SOLID95) may
not follow the out-of-plane curvature of the bounding area for mid-node
placement, but instead may place the mid-nodes linearly between their
neighboring corner nodes.

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

Rev.  5.1 Rev.  5.2

SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:

     Issue MODMSH, NOCHECK, then modify midside nodes as required to
place them on the surface (NMODIFY).

COMMENTS:

     Analysis results from elements not conforming to a curved surface
are frequently less accurate than results from elements following such
curvature.

AUTHOR/CORRECTOR:                       DATE:     September 26, 1995
                    Scott Canann

REVIEWED BY QA:                         DATE:     September 26, 1995
                    William J. Bryan

APPROVAL:                               DATE:     September 26, 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 QA25
                                                       DEC 19, 1988

            ANSYS [Registered Trademark] CLASS3 ERROR REPORT

                                                       ERROR NO: 95-53

KEYWORDS: CORROSION THICKNESS ALLOWANCE      ELEM16    ELEM17    ELEM18

DESCRIPTION OF ERROR:

     When a non-zero corrosion thickness allowance is specified (real
constant TKCORR), all stresses and strains are incorrect for PIPE16,
PIPE17, and PIPE18.

     The correct magnitude of the stresses is either equal to or less
than the reported magnitude of the stresses.

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

Rev.  5.0                               Rev.  5.2
ANSYS/Linear Plus Rev. 5.0A             ANSYS/Linear Plus Rev. 5.2

SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:

COMMENTS:

AUTHOR/CORRECTOR:                       DATE:     September 26, 1995
                    Lisa Fordanich

REVIEWED BY QA:                         DATE:     September 26, 1995
                    William J. Bryan

APPROVAL:                               DATE:     September 26, 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 QA25
                                                  DEC 19, 1988

            ANSYS [Registered Trademark] CLASS3 ERROR REPORT

                                                       ERROR NO: 95-54

KEYWORDS:      APDL           ARFACE              GET FUNCTION

DESCRIPTION OF ERROR:

     When the ARFACE(E) "get function" is used to get the area of element
faces, a value of zero is returned for the following elements: SOLID5,
PLANE13, FLUID29, FLUID30, PLANE53, SOLID62, SOLID96, SOLID97, SOLID98,
INFIN110, INFIN111, PLANE121, SOLID122, SOLID123.

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

Rev. 5.1                                     Rev.  5.2
ANSYS/FLOTRAN Rev. 5.1                       ANSYS/FLOTRAN Rev. 5.2

SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:

     Switch element type to an appropriate element type that has a
pressure or convection face before using ARFACE get function; then switch
back to the original element type.

COMMENTS:

     The error occurs because the above elements do not have pressure or
convection characteristics.  The ARFACE get function returns the correct
value for elements that do have p on characteristics.

AUTHOR/CORRECTOR:                            DATE:     September 26, 1995
                    Christopher W. Aiken

REVIEWED BY QA:                              DATE:     September 26, 1995
                    William J. Bryan

APPROVAL:                                    DATE:     September 26, 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 QA25
                                                  DEC 19, 1988

            ANSYS [Registered Trademark] CLASS3 ERROR REPORT

                                                  ERROR NO: 95-55

KEYWORDS:      POST1          ESEL           MULTIPLE SOLUTIONS

DESCRIPTION OF ERROR:

     POST1 results will be incorrect if the solution being post-processed
was performed on a subset (ESEL) of a model that as previously solved
using a different selected set of elements, and all of the following are
true:

     1.   ANSYS was not exited ( /EXIT) between solutions or the resumed
          database contained the model solution data (/EXIT.SOLU or
          /EXIT.ALL).

and  2.   Any of the elements unselected for the solution are reselected
          in POST1.

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

Rev.  5.0                               Rev. 5.3
Component Products Rev. 5.0A            Component Products Rev. 5.3

SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:

     Do not reselect any of the elements unselected for the solution or
remove the earlier solution from the database ( /EXIT or SAVE).

COMMENTS:

     The error occurs because the results of the previous solution for
the unselected elements still reside in the database.

AUTHOR/CORRECTOR:                       DATE:     September 26, 1995
                    David L. Conover

REVIEWED BY QA:                         DATE:     September 26, 1995
                    William J. Bryan

APPROVAL:                               DATE:     September 26, 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 QA25
                                                       DEC 19, 1988

Table "ANSYS 5.0A CLASS3 ERROR SUMMARY BY REPORT NUMBER [30 PAGES]"
omitted.

*** END OF DOCUMENT ***

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