United States Nuclear Regulatory Commission - Protecting People and the Environment

ACCESSION #:  9604220153



Information & Support Services

P.O  Box 3707

Seattle, WA 98124-2207



BOEING



April 12, 1996

G-1151-SJA-96-223



Document Control Desk

United States Nuclear Regulatory Commission

Washington, D.C. 20555



Reference: a)  Boeing Letter G-1 151-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



     Gibbs & Hill, Inc.



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 96-12, 96-13, 96-14 and

               96-02 R1



ANSYS [Registered Trademark]       ANSYS, Inc.

                                   201 Johnson Road         Telephone

                                   Houston, PA 15342-1300   412.746.3304

                                                            Facsimile

                                                            412.746.9494



                                   April 2, 1996



Dear Class3 Error Recipient:



     Attached you will find ANSYS Class3 Error Reports 96-12, 96-13, 96-

14 and 96-02 R1.



     ANSYS Class3 Error Report 96-02 is being reissued to add element

PLANE121 and further clarify the error description for elements SOLID122

and 123.



                                   Sincerely,



                                   ANSYS, Inc.



                                   William J.  Bryan

                                   Quality Assurance Manager



                ANSYS is a registered trademark of SAS IP



                  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 orange 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. 43A 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 guarrantee

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       the full ANSYS product,

                shown for                      for included pre- and

                                               postprocessing function-

                                               ality



                  ANSYS [Registered Trademark] CLASS3



                                             ERROR REPORT 96-12



KEYWORDS: SOLID97   SOLID62   ELEM97    ELEM62    RESISTIVITY    ESYS



DESCRIPTION OF ERROR:



     For SOLID97 and SOLID62, the global Cartesian coordinate system is

always used for the resistivity material property.  If an element

coordinate system for resistivity is requested by the ESYS command, it is

ignored.



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



Rev.  5.2                               Release 5.3

ANSYS/Emag Rev. 5.2                     ANSYS/Emag Release 5.3



SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:



COMMENTS:



AUTHOR/CORRECTOR:                       DATE:  April 1, 1996

                    Jian-She Wang



REVIEWED BY QA:                         DATE:  April 1, 1996

                    William J. Bryan



APPROVAL:                               DATE:  April 1, 1996

                    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.



            ANSYS [Registered Trademark] CLASS3 ERROR REPORT



                                             ERROR NO.  96-13



KEYWORDS:      SUBSTRUCTURES       TOTAL COMMAND



DESCRIPTION OF ERROR:



     During a substructure generation run (ANTYPE,SUBSTR), nodal forces

applied to master degrees of freedom that are selected with the TOTAL

command erroneously have their effect doubled.



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



Rev.  4.0                          Release 5.3



SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:



     Specify master degrees of freedom with the M command on all degrees

of freedom that have applied nodal forces rather than using the TOTAL

command.



COMMENTS:



AUTHOR/CORRECTOR:                       DATE: April 1, 1996

                    Peter Kohnke



REVIEWED BY QA:                         DATE: April 1, 1996

                    Willliam J. Bryan



APPROVAL:                               DATE: April 1, 1996

                    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.



            ANSYS [Registered Trademark] CLASS3 ERROR REPORT



                                             ERROR NO: 96-14



KEYWORDS:      SHELL63      ELEM63   THERMAL LOAD      NEWTON-RAPHSON



DESCRIPTION OF ERROR:



     When SHELL63, the elastic she]] element is used with:



     1.  non-uniform thermal loads (applied with the BF or BFE commands)

         that induce membrane (in-plane) deformation;



and  2.  any nonlinearity in the model



and  3.  extra displacement shapes (applied with KEYOPT(3)=0 [default] or

2); all results are inaccurate.



     A nonlinearity exists if a nonlinear geometric or material option is

chosen, if an element type which is inherently nonlinear is present, or

if nonlinearity is explicitly requested with the NROPT command.



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



Rev.  5.0                               Release 5.3



SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:



COMMENTS:



     For most analyses, the effect of this error is negligible.  Non-

uniform thermal loads that induce bending deformation are treated

correctly.



AUTHOR/CORRECTOR:                       DATE: April 1, 1996

                    Peter Kohnke



REVIEWED BY QA:                         DATE: April 1, 1996

                    William J. Bryan



APPROVAL:                               DATE:  April 1, 1996

                    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.



            ANSYS [Registered Trademark] CLASS3 ERROR REPORT



                                             ERROR NO: 96-02 R1



KEYWORDS:      ORTHOTROPIC MATERIAL     MATRIX REUSE



DESCRIPTION OF ERROR:



COMMENTS:



     [Redline: All results will be incorrect after the first substep,

when orthotropic properties change between substeps because the

conductivity matrices are erroneously reused for the following cases:]



[Redline: A.   1.   aPLANE121, or SOLID122,123 (electrostatic solid)

                    element is used;



           and 2.   orthotropic permittivity is used (using the PERY

                    and/or PERZ material properties);



           and 3.   only the X-direction permittivity (material property

                    PERX) changes: or



          B.   1.   aPLANE75,78 or SOLID70,87,90 (thermal solid) or a

                    SOLID 5,98 (coupled-field solid) element is used;



           and 2.   orthotropic permittivity is used (using the KYY

                    and/or KZZ material properties);



           and 3.   only the Z-direction conductivity (material property

                    KZZ) changes.]



[Redline: Material properties may change between substeps by being

temperature-dependent, or by being redefined.]



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



Rev.  5.0                               Release 5.3

ANSYS Thermal Rev. 5.0A                 ANSYS/Thermal Release 5.3



SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION:



     [Redline: In either of the above cases, make sure that the material

properties in all directions also have at least a very small change.]



COMMENTS:



AUTHOR/CORRECTOR:                       DATE: April 1, 1996

                    Peter Kohnke



REVIEWED BY QA:                         DATE: April 1, 1996

                    William J. Bryan



APPROVAL:                               DATE:  April 1, 1996

                    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.



*** END OF DOCUMENT ***



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