Part 21 Report - 1998-630

ACCESSION #: 9809150181

Shared Services Group
P.O. Box [Illegible print]
Seattle, WA [Illegible print]


September 9, 1998


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

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
Phone: (425) 865-6248
FAX: (425) 865-4851

Mail Stop: 7A-33, or

Enclosure(s): GTSTRUDL Program Report Form 98.13

Georgia Institute of Technology GT STRUDL [Registered Trademark]

September 1, 1998

Attention: Nuclear Administrator
Boeing Information & Support Services
P.O. Box 24346, M/S 7A-33
Seattle, Washington 98124-0346


Dear Sir or Madam:

Enclosed please find copies of GTSTRUDL PROGRAM REPORT FORM 98.13, and a GTSTRUDL-QA CUSTOMER ACKNOWLEDGEMENT FORM. Please sign and return the GTSTRUDL QA CUSTOMER ACKNOWLEDGEMENT FORM to acknowledge receipt of the GTSTRUDL Program Report.

Thank you for reviewing the Program Report and for returning the Acknowledgement Form.

Best regards,

CASE Center

David C. Key
Configuration Control Manager


Computer Aided Structural Engineering Center Phone: (404) 894-2260
School of Civil & Environmental Engineering Fax: (404) 894-8014
Atlanta, Georgia 30332-0355 USA

A Unit of the University System of Georgia

GTSTRUDL Program Report Form
GPRF No.: 98.
FROM: Computer-Aided Structural Engineering Center
Georgia Institute of Technology
Atlanta, Georgia 30332-0355
X URGENT Problem results in incorrect answers which may not be apparent or job aborts and cannot be recovered within the session or job.
__ SERIOUS Problem results in incorrect answers which are obvious or problem presents completion of a particular user's task.
__ MINOR Problem can be worked around or problem poses high frustration factor.
__ INFORMATIVE Documentation error, program usage tip, user inconveniences.
Date Problem Confirmed August 27, 1998
Date Notification Sent
Computers All
Operating System All
Versions: 97.01 and later
Target Release for Correction: 98.02
Signature Title
R & D Division
Michael H. Swanger
Typed or Printed Name Date of Signature
Signature Title
Professional Services Division
Typed or Printed Name Date of Signature

Rev. 2.2

GTSTRUDL Program Report Form
GPRF No.: 98
The displacements at a master joint, produced by a nonlinear static analysis, are incorrect if the following conditions are present:
1. A RIGID PLANE, RIGID PLATE, or RIGID PIN element is connected to the master joint.
2. No other element is connected to the master joint.
3. Other members having degrees of freedom which are different from those of the rigid body are connected to the slave nodes. For example, a RIGID PLANE element parallel to the global XY plane and with space frame members connected to one or more of the slave joints will exhibit this problem. On the other hand, correct master joint displacements will be produced for the same RIGID PLANE element with only plane frame XY members connected to the slave nodes.
This problem does not apply to RIGID SOLID elements. RIGID SOLID elements in combination with appropriate SAVE RELEASES may be used in place of the RIGID PLANE, RIGID PLATE, or RIGID PIN elements.
GTSTRUDL User Reference Manual Sections:
Nonlinear Static Analysis Section 2.5, Volume 3, GTSTRUDL Reference Manual.
Joint Constraints - Rigid Bodies and Joint Ties Section 2.6.4, Volume 3, GTSTRUDL Reference Manual. Rev. 2.2


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