Part 21 Report - 1999-010

ACCESSION #: 9812100007

---

Shared Services Group
P.O. Box 3707
Seattle, WA 98124-2207

December 2, 1998
G-1151-SJA-98-602

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

BOEING

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 oftware 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 e-mail: Sandra.J.Andrews@Boeing.com

Enclosure(s): GTSTRUDL Program Report Form 98.21, 98.22

Georgia Institute of Technology	GT STRUDL [Registered Trademark]
November 23, 1998	DEC 02 1999

---

Attention: Nuclear Administrator

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

RE: GT STRUDL

Dear Sir or Madam:

Enclosed please find copies of GTSTRUDL PROGRAM REPORT FORM 98.21, 98.22, 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

Enclosures

Computer Aided Structural Engineering Center School of Civil & Environmental Engineering Atlanta, Georgia 30332-0355 USA	Phone: (404) 894-2260 Fax: (404) 894-8014 casec@ce.gatech.edu
A Unit of the University System of Georgia
GTSTRUDL Program Report Form	GPRF No.: 98.21
DATE:
FROM:	Computer-Aided Structural Engineering Center Georgia Institute of Technology Atlanta, Georgia 30332-0355

SEVERITY LEVEL:
	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 prevents 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	11/16/98
Date Notification Sent
Computers	All
Operating System	All
Versions:	97.01 and later
Target Release for Correction:	99.01
Mgr.	ASD
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(Continued)
GPRF No.:	98.21
DATE:
DESCRIPTION:	The GIRDER command incorrectly sets scan mode and issues an error message indicating as inactive any master joints to which component girder members are connected.
Workaround:	Do not use joint constraints with the GIRDER command. It may be possible to replace joint constraints with other modeling approaches such as very stiff members and elements, member releases, and member eccentricities.

GTSTRUDL User Reference Manual Sections:

Joint Constraints - Rigid Bodies and Joint Ties	Section 2.6.4, Volume 3, GTSTRUDL Reference Manual.
The GIRDER Command	Section 9.2, Volume 4, GTSTRUDL Reference Manual.

Rev. 2.2
GTSTRUDL Program Report Form

---

GPRF No.:
DATE:
FROM:		Computer-Aided Structural Engineering Center Georgia Institute of Technology Atlanta, Georgia 30332-0355
SEVERITY LEVEL:
	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 prevents 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		November 18, 1998
Date Notification Sent
Computers		ALL
Operating System		ALL
Version		All versions prior and including 9801 NT
Target Release for Correction		9901
Senior Software Engineer
Signature		Title
R & D Division
Hamid Zand
Typed or Printed Name		Date of Signature
Signature		Title
Professional Services Division
Typed or Printed Name		Date of Signature

Rev. 2.2
Page 1 of 6

---

GTSTRUDL Program Report Form(Continued)

GPRF No.:
DATE:
DESCRIPTION:	Steel Design
Applicable GT STRUDL Command:	SELECT MEMBERS
	CHECK MEMBERS
Applicable GT STRUDL Steel Design Codes:	NF17 and NF83 Codes
Applicable GT STRUDL Cross-Section:	Structural Tube
Explanation:	One of the provisions in the NF17 and NF83 code checks for the Structural Tube is to check the combination of the transverse shear stresses along the Y and Z axes, torsional shear stress, and the warping shear stress. The GT STRUDL provision name is 'SHEAR' and it is documented on Page 2.2.5-550 of Volume 2B.

SH1 = Shear Stress along Z axis + Torsional Shear Stress + Warping Shear Stress
SH3 = Shear Stress along Y axis + Torsional Shear Stress + Warping Shear Stress
SHEAR = Maximum of (SH1 , SH3)

The provision 'SHEAR' checks the combined transverse shear stress along the Y and Z axes, torsional shear stress, and the warping shear stress at points 1 and 3 (Figure 1.1). GTSTRUDL performs the check as it is documented on page 2.2.5-550, but some cases, points 1 and 3 may not be the worst case. To investigate for the worst case, points 2 and 4 (Figure 1.1) should be checked also. GTSTRUDL does not check the combined shear stresses at points 2 and 4.

Page 2 of 6

---

Figure 1.1

In the normal situation, provision 'SHEAR' is not the governing provision. In general the combined interaction equation (axial and bending stresses) or the normal stress (provision 'NORMAL' which is the axial stress + the normal stresses due to bending, or provision 'BEND NOR' + the warping stress, or provision 'WARP NOR') is the governing provision.

Page 3 of 6

---

Workaround:

The following check can be performed to evaluate whether the user has to perform hand computation for the provision 'SHEAR' or not. Use the parameter SUMMARY and the SUMMARIZE command to print the computed values for all stresses. Then, add the actual value for the provisions 'TORS SHR', 'WARP SHR', and 'SHEAR Y' together to get the shear stress along the Y axis, and add the actual value for the provisions 'TORS SHR', 'WARP SHR', and 'SHEAR Z' together to get the shear stress along the Z axis. If any one of the computed values is greater than the allowable value shown for the provision 'SHEAR', you may need to perform a hand computation based on the equations shown in the provision 'SHEAR' (Page 2.2.5-550 of Volume 2B). Note that the provisions 'SHEAR Y' (Page 2.2.5-482 or Page 2.2.5-613 of Volume 2B) and 'SHEAR Z' (Page 2.2.5-481 or 2.2.5-612 of Volume 2B) may result in a different shear stress than the VQ/It equation that was used in the provision 'SHEAR'. The above evaluation technique may result in a more conservative value, and this is performed to see if the user has to perform a hand computation or not. The actual computation of the provision 'SHEAR' may result in a different value than the evaluation technique given above (see examples below).

Example to print Summary data:

PARAMETER 'SUMMARY' 'YES' ALL MEMBERS
LOAD LIST 1
CHECK ALL MEMBERS
SUMMARIZE CODE CHECK ALL MEMBERS ALL POINTS

Applicable GT STRUDL User's Manual:

Volume 2A	Section 2.6	SELECT MEMBERS Command
Volume 2A	Section 2.8	CHECK MEMBERS Command
Volume 2B	Section 2.2.5.10	The NF17 Code
Volume 2B	Section 2.2.5.10.5.4	Warping Stress Provisions for Structural Tube
Volume 2B	Section 2.2.5.11	The NF83 Code

---

Page 4 of 6

Example of SUMMARIZE output:

The Provisions 'SHEAR', 'TORS SHR', 'WARP SHR', 'SHEAR Y, 'SHEAR Z, and the parameter 'WARP-END' which describes the member end boundary conditions have been underlined.

The following SUMMARIZE output is based on the PIN-PIN member end boundary condition:

GT STRUDL computed actual value for provision 'SHEAR' = 0.465

Quick evaluation check for shear in Z direction = 0.613*_/ + 0.061*_/ + 0.0*_/ = 0.674
Quick evaluation check for shear in Y direction = 0.022*_/ + 0.061*_/ + 0.0*_/ = 0.083
Quick evaluation check for provision 'SHEAR' = Maximum of (0.674, 0.083) = 0.674
Hand computed value for shear in Z direction = 0.588
Hand computed value for shear in Y direction = 0.083
Hand computed value for provision 'SHEAR' = Maximum of (0.588, 0.083) = 0.588
The allowable value for the provision 'SHEAR' is equal to 12.4

*_/ Value from SUMMARIZE output above.

Page 5 of 6

---

The following SUMMARIZE output is based on the FIX-FIX member end boundary condition:

GT STRUDL computed actual value for provision 'SHEAR' = 0.475

Quick evaluation check for shear in Z direction = 0.613*_/ + 0.061*_/ + 0.0*_/ = 0.684
Quick evaluation check for shear in Y direction = 0.022*_/ + 0.061*_/ + 0.01*_/ = 0.093
Quick evaluation check for provision 'SHEAR' = Maximum of (0.684, 0.093) = 0.684
Hand computed value for shear in Z direction = 0.598
Hand computed value for shear in Y direction = 0.093
Hand computed value for provision 'SHEAR' = Maximum of (0.598, 0.093) = 0.598
The allowable value for the provision 'SHEAR' is equal to 12.4

*_/ Value from SUMMARIZE output above. Rev. 2.2

Page 6 of 6

---

*** END OF DOCUMENT ***

---