ML20236F762

Summary of 870915 Meeting W/Util & Util Design Contractors in New York,Ny Re Resolutions to Generic Technical Issues on Structural Integrity of HVAC Design

ML20236F762
Person / Time
Site:	Comanche Peak
Issue date:	10/19/1987
From:	Terao D NRC OFFICE OF SPECIAL PROJECTS
To:	NRC OFFICE OF SPECIAL PROJECTS
References
NUDOCS 8711020285
Download: ML20236F762 (103)

Text

{{#Wiki_filter:__ o / 'o UNITED STATES "q NUCLEAR REGULATORY COMMISSION n { WASHINGTON, D. C. 20556 ~%*****/ October 19, 1987 Docket Nos.: 50-445 50-446 APPLICANT: Texas Utilities Electric Company (TV Electric) FACILITY: Comanche Peak Steam Electric Stations, Units 1 and 2

SUMMARY

OF MEETING ON SEPTEMBER 15, 1987 - HVAC GENERIC TECHNICAL ISSUES On September 15, 1987, the NRC staff and its consultants met with represent-atives of TV Electric (applicant) and the applicant's design contractor at The the offices of Ebasco Services Incorporated, in New York City, New York. meeting notice and list of attendees are provided in Enclosure 1 to this The purpose of the meeting was to discuss the resolutions to meeting summary. the generic technical issues related to the structural integrity of the heating, The background and approach ventilation, and air-conditioning (HVAC) design. to resolution of the HVAC generic technical issues were provided in a report i entitled " Evaluation and Resolution of Generic Technical Issues for HVAC Systems (Including Ducts and Duct Supports)," Revision 0, dated December 15, 1986.* The HVAC generic technical issues were identified by organizations both external and internal to TV Electric. The external source issues are those issues The identified by the CPRT third-party reviews conducted by ERC and TERA. internally generated issues consist of those issues identified by TV Electric / Ebasco 1) through the Corrective Action Program, 2) through a generic implica-tion evaluation of piping, cable tray hanger, and conduit support issues as applicable to HVAC, and 3) in response to a previous NRC construction appraisal l inspection conducted in 1983 (Inspection Report 50-445/83-18; 50-446/83-12 dated l In its presentation TV Electric discussed 19 externally l April 11, 1983). generated issues and 45 internally generated issues related to the HVAC design. l The slides from the HVAC presentations are provided in Enclosure 2 to this l meeting sunmary. The staff is continuing its review of the approach to resolution of the HVAC generic technical issues. The staff expressed a concern regarding the lack of a third-party review of the HVAC issue resolutions. Many HVAC issues have been identified by TU Electric /Ebasco and are being resolved via the issue resolutions from other design disciplines (i.e., piping, cable tray hanger, andconduitsupports).

• The HVAC report was transmitted from the applicant to the NRC staff in a letter from W. G. Counsil (TV Electric) to V. Noonan (NRC) dated December 23, 1986 (TXX-6148).

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L [ OCT 1 g ;gy i Summary of September 15, 1987 Meeting l It is not evident to the staff that the issue resolutions from the other design disciplines are. categorically applicable to the HVAC design. As discussed at the exit meeting, a third-party review of the applicability of the piping, cable tray hanger, and conduit support issue resolutions to the HVAC generic technical issues would provide; assurance to the staff that the HVAC issue-resolutions are appropriate and adequate.. The staff will continue to review the details of the HVAC issue resolutions and will discuss further questions as part of its review of-the HVAC . design' criteria and methodology. The staff will provide its findings related to the HVAC design in a safety evaluation upon completion of its review. David Terao, Mechanical Engineer for Technical Programs Comanche Peak Project Division Office of Special Projects

Enclosures:

1. Meeting Notice List of Meeting Attendees 2. HVAC Slide Presentation cc: See next page

Enclosures:

i 1. Meeting Notice List of Meeting Attendees -2. HVAC Slide Presentation j i cc: See next page-Distribution: PNpoetet?E11e. .l "NRC PDR l LPDR i OSP Reading File j 'CPPD Reading File J. Keppler/J. Axelrad C. Grimes P. McKee R. Warnick j D. Terao 1 A. Vietti-Cook ) M. Malloy ) CPPD.LA OGC-Bethesda F. Miraglia E.' Jordan J. Partlow ACRS(10)

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s 3. . \\; Summary of September ~15, 1987' Meeting. 2.- It is not evident to the staff.that the issue resolutions from the other design disciplines are categorically applicable to the HVAC design.. As discussed at the exit theeting, a third-party' review of the applicability of the piping, cable tray. hanger.and conduit support issue resolutions to the HVAC generic technical issues J !would' provide assurance to the staff that the HVAC issue resolutions are appropriate. ~ and adequate._The staff will continue to' review the details of the HVAC issue 4 Resolutions and will ciscuss further. questions as part of its review of the HVAC design criteria.and. methodology. The staff will provide its findings related to the HVAC design in a safety evaluation upon completiori of its review.- 1 sY Y David Terao, Mechanical '..igineer. for Technical Programs Comanche Peak Project Division i .0ffice of Special Projects

Enclosures:

1. Meeting Notice List of Meeting Attendees HVAC Slide Presentation'- 2. l cc: See next page-l i

g ;, =g. '~ ), . W..G. Counsil Comanche Peak Steam Electric Station Texas Utilities Electric Company Units 1 and 2' CC: Thomas G. Dignan, Jr. Asst. Director for Inspec. Progrenis' Comanche Peak Project Division ,t Ropes & Gray 225 Franklin Street U.S. Nuclear Regulatory Commission Boston, Massachusetts 02110 P. O. Box 1029 L Granbury. Texas 76048 4 Robert A. Wooldridge,'Esq. Regional Administrator, Region IV e Worsham, Forsythe, Sampels & U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Wooldridge

2001 Bryan Tower, Suite 2500 Arlington, Texas 76011 Dallas, Texas-75201 Lanny A. Sinkin Mr. Homer C. Schmidt Christic Institute Director 'of Nuclear Services 1324 North Capitol Street

. Texas Utilities Electric Company Washington, D.C. 20002 Skyway Tower 400 North Olive Street, L.B. 81-Ms. Billie Pirner Garde, Esq. Dallas, Texas 75201 Government Accountability Project Midwest Office Mr. Robert E. Ballard,'Jr. 104 East Wisconsin Avenue Director of Projects Appleton, Wisconsin 54911 Gibbs and Hill, Inc. 11 Penn Plaza New York, New York 10001 David R. Pigott, Esq. Orrick,.Herrington. & Sutcliffe 600 Montgomery Street Mr. R. S. Howard San Francisco, California 94111 Westinghouse Electric Corporation P. 0. Box'355 . Anthony Z. Roisman, Esq. Pittsburgh, Pennsylvania 15230 Suite 600 1401 New York Avenue, NW Renea hicks. Esq. Washington, D.C. 20005 Assistant Attorney General Environmental Protection Division Robert Jablon 'P. O. Box 12548, Capitol Station Bonnie S. Blair Austin, Texas 78711 Spiegel & McDiarmid 1350 hew York Avenue, NW Mrs. Juanita Ellis, President Washington, D.C. 20005-4798 Citizens Association for Sound Energy 1426 South Polk George A. Parker, Chairman Dallas,-Texas 75224 Public Utility Committee Senior Citizens Alliance Of Ms. Nancy H. Williams Tarrant County, Inc. CYGNA Energy Services 6048 Wonder Drive 2121 N. California Blvd., Suite 390 Fort Worth, Texas 76133 Walnut Creek, CA 94596 1

+ + yk. 3 W. G.=Counsil- . Comanche Peak Electric Station Texas Utilities Electric Company Units 1 and 2 ' cc': Joseph'F.'fulbright Fulbright & Jaworski y 1301' McKinney Street i Houston. Texas'77010 l -Mr.-Donald R. Woodlan' 3 I Texas Utilities Electric Company -Skyway Tower. 400 North Olive Street, L.B. 81 Dall6s, Texas 75201 Mr. Jack _Redding c/o Bethesda Licensing Texas' Utilities Electric Company 3 Metro Center, Suite 610 Bethesda, Maryland 20814 ) William A. Burchette, Esq. Counsel for Tex-La Electric' Cooperative of Texas l i Heron, Burchette, Ruckert & Rothwell Suite 700 1025 Thomas.-Jefferson Street, NW Washington, D.C. 20007 James M. McGaughy GOS Associates, Inc. Suite 450 2525 Cumberland Parkway Atlanta, Georgia 30339 Administrative Judge Peter Bloch U.S. huclear Regulatory Commission Washington, D.C. 20555 Elizabeth B. Johnson ( i I Administrative Judge Oak Ridge National Laboratory P. O. Box X, Builaing 3500 Oak Ridge, Tennessee 37830 Or. Kenneth A. McCollom 1107 West Knapp Stillwater, Oklahoma 74075 Dr. Walter H. Jordan = Administrative Judge 881 West Outer Drive Oak Ridge, Tennessee 37830 f:

e.- 't a. ENCLOSURE 1 Meeting Notice List of Attendees

v. 4 ~ "o,, UNITED STATES I NUCLEAR REGULATORY COMMISSION E I WASHING TON, D. C. 20666 k....., August 24, 1987 Docket Nos.: 50-445/446 MEMORANDUM FOR: Christopher 1. Grimes, Director Comanche Peak Project Division Office of Special Projects THRU: Hans E. Schierling, Assistant Director for Projects Comanche Peak Pfoject Division k Office of Special Projects FROM: Annette Vietti-Cook, Project Manager Comanche Peak Project Division Office of Special Projects

SUBJECT:

FORTHCOMING MEETING WITH TV ELECTRIC AND EBASCO I Date & Time: Monday, September 14, 1987 (C e b i+ SWb Tuesday, September 15, 1987 L ttV AC ) i Beginning each day at 9:00 a.m. Location: EBASCO offices 2 World Trade Center New York, New York 10001

Purpose:

To discuss generic technical issues in the area.5 of heating ventilation and air conditioning (HVAC) A8-NW*.sy part-S C'T"r' Ai 6 5 A y/ % C>2'

Participants:

NRC Applicant C Terao D. Woodlan, et al. q Consultant (Teledyne) l q 1 '_ _., s . N CCN l nette Vietti-Cook, Project Manager j Comanche Peak Project Division Office of Special Projects i Members of the public planning to attend should contact: A. Vietti-Cook or M. Malloy (301) 492-4555 (301) 492-7624 j cc: See next page ) i ! W e- \\

ny.7 . -- a ..,,)' l c',1.. E . n COMANCHE PEAK SES t, NPC HVAC GENERIC TECHNICAL ISSUES MEETING EBASCO OFFICES, HEW YORK' DATE: 9/15/87 SHEET 1 OF l NAME ' AFFILIATION 1 1 ,.O. - C l./ 4 c2 E. I, n.- c. u 1 M (' HUA P/C A9TT. 66 AS CO 3 ./(stGu Mi9eaa fdaJM k & x-(4/d ? v n z n v,v.- t 1, [.:, fA... s \\ .C 13tcwo M ^ %se ' peroyas Eva Sexvia cs /un e G Baulef (-e nto ALC. 7 Srr Womad TV EWrarc l f Tot b%Me Etwstt-8 Evvet D&z Esasco (o 8,ve b(fMA?vD' &.O E% m 0 3E /ko dc in e, EBA sco a FA r Ac(m GOs Associnves ll /%)ess Acw e. YO Ekchrc Uf -]OlJd $$S+'lM L-Til E w c nC/C tr %.%. (sw %Rc < au bn 4 (6 -T. E. Ly oc3 NE( (7 IC (1 z, l l __z

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NRC/EBASCO MEETING-1 HVAC STRUCTURAL DESIGN VALIDATION' I

-l .,1 f SEPTEMBER 15,.' T7 J l 1 l 1 l L - 1918R L:- =:

si,. TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION SLIDE B AGENDA INTRODUCTION TV ELECTRIC'.

SUMMARY

.0F HVAC STRUCTURAL DESIGN VALIDATION PROGRAM .l

SUMMARY

OF GENERIC TECHNICAL ISSUES RESOLUTION: i (A) EXTERNALLY GENERATED ISSUES 'l ~ (B)L ' INTERNALLY GENERATED ISSUES ( j: l 1918R

1 TU ELECTRIC 9/15187 COMANCHE. PEAK STEAM ELECTRIC STATION SLIDE 'C'

SUMMARY

0F HVAC STRUCTURAL DESIGN VALIDATION. PROGRAM

' OUTLINE i o

SUMMARY

OF EXTERNA [ ISSUE SOURCES ^ o TU' ELECTRIC CORRECTIVE ACTION HISTORY-0 PROGRAM FEATURES o WALKDOWN AND AS-BUILT DRAWING DEVELOPMENT o DESIGN VALIDATION APPROACH DEVELOPMENT o DESIGN VALIDATION PROCESS I o REWORK AND DESIGN MODIFICATIONS' o LOCATION OF PROGRAM ACTIVITIES l i 1 ~ 1918R

r TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION SLIDE D HVAC STRUCTURAL DESIGN VALIDATION PROGRAM

SUMMARY

0-

SUMMARY

OF EXTERNAL ISSUE SOURCES INTERVENOR RAISED SEVERAL BROAD ISSUES CYGNA IAP RAISED SEVERAL GENERIC TECHNICAL ISSUES i TRT REVIEW RAISED QUESTIONS ON QC ADEQUACY (1984) THIRD PARTY AND CPRT REVIEWS l-NRC NOTICES OF VIOLATION i CAT o ALL EXTERNAL SOURCE ISSUES ARE RESOLVED BY THE HVAC CORRECTIVE ACTION PROGRAM AND DESIGN VALIDATION PROGRAM i IN PROGRESS. f I i -1918R I

I TV ELECTRIC 9/15187' D COMANCHE PEAK STEAM ELECTRIC STATION SLIDE.E HVAC STRUCTURAL-DESIGN VALIDATION PROGRAM

SUMMARY

I o TU ELECTRIC CORRECTIVE ACTION HISTORY 1985: A LIMITfD NUMBER OF HVAC SYSTEMS WERE REVIEWED l T0 DETERMINE ADEQUACY I 1986: HVAC CORRECTIVE ACTION PLAN STARTED .j i I 1918R

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t; TU ELECTRIC 9/15/87 C0MANCHE PEAK STEAM ELECTRIC STATION

. SLIDE F s. HVAC STRUCTURAL DESIGN VALIDATION PROGRAM

SUMMARY

l 0 PROGRAM FEATURES-AS-BUILT OF SEISMIC HVAC DUCTS AND SUPPORTS 1 AS-BUILT OF SEISMIC HVAC' AIR HANDLING UNITS, PLENUMS AND EQUIPMENT SUPPORTS OC INSPECTION OF SEISMIC SUPPORTS AND SAFETY RELATED DUCT 1001 DESIGN VALIDATION OF FINAL'AS-8UILT CONFIGURATIONS EXTERNAL AND INTERNAL DESIGN AND QC ADEQUACY ISSUES ADDRESSED VIA WALKDOWNS AS-BUILT. DESIGN VALIDATION. . TESTING. OR SPECIAL STUDIES l l l 'l I i L l - 1918R L t____z______ _o

nw-o- TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION SLIDE.G' HVAC. STRUCTURAL DESIGN VALIDATION PROGRAM

SUMMARY

o WALKDOWN AND AS-BUILTING. I -ENGINEERING WALKS DOWN EACH HANGER AND AS-BUILTS EACH ATTRIBUTE REQUIRED FOR DESIGN VALIDATION WALKDOWN BY TEAMS OF TWO PEOPLE l .,.y MEASURES TO ENSURE ACCURACY OF WALKDOWN PRODUCT (SPOT l SELF-CHECKING AND SURVEILLANCE BY INDEPENDENT TEAMS). THE FOLLOWING ATTRIBUTES ARE AS-BUILT BY. SURVEYING TEAMS: PLUMBNESS LEVELNESS-WALKDOWN PROCEDURES: CPE-EB-FVM-CS-029 CPE-EB-FVM-CS-066 o AS-BUILT DRAWING PREPARATION AND QC INSPECTION -~ PRELIMINARY AS-BUILT PREPARED FROM ENGINEERING WALKDOWN INPUT i PRELIMINARY AS-BUILT USED BY QC FOR INSPECTION AND FOR CONSTRUCTION FOR REWORK l FINAL AS-BUILT PREPARED THAT INCORPORATES THE QC j INSPECTION AND DESIGN VALIDATION RESULTS l OC PROCEDURES:- QI-0P-11.14-14 I OI-0P-11.14-15 01-0P-11.21-1 j 1918R +

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TU ELECTRIC ' 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION SLIDE H j l l <l .HVAC STRUCTURAL DESIGN VALIDATION PROGRAM

SUMMARY

l o DESIGN VALIDATION APPROACH DEVELOPMENT l DESIGN CRITERIA. DETAILED PROJECT INSTRUCTIONS AND DESIGN BASIS DOCUMENTS WERE DEVELOPED T0 COMPLY WITH CPSES FSAR, APPLICABLE CODES AND STANDARDS l l CRITERIA / INSTRUCTIONS.ARE BACKED-UP BY TECHNICAL . STUDIES.AND TESTS PERFORMED SPECIFICALLY FOR CPSES HVAC AND THEIR COMPONENTS CRITERIA / INSTRUCTIONS SPECIFICALLY ADDRESS CONCERNS OF ALL EXTERNAL AND INTERNAL. SOURCES-1918R 1

I TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION SLIOE I HVAC STRUCTURAL DESIGN VALIDATION PROGRAM

SUMMARY

0 DESIGN VALIDATION PROCESS SCOPE: SEISMIC CATEGORY I AND II HVAC DUCTS AND SUPPORTS UNIT 1: 4,014 SUPPORTS f ~ UNIT 2: 1,400 SUPPORTS DESIGN VALIDATION INPUT DESIGN CRITERIA AND INSTRUCTIONS AS-BUILT DRAWING FOR EACH HVAC DUCT SUPPORT AS-BUILT DUCT LAYOUT INFORMATION IN-LINE EQUIPMENT DATA ANALYSIS AND QUALIFICATION RESPONSE SPECTRUM METHOD OR EQUIVALENT STATIC METHOD OF SEISMIC ANALYSIS SUPPORT STEEL DESIGN VALIDATION WELD AND ANCHORAGE DESIGN VALIDATION HVAC DUCT AND DUCT SUPPORT DESIGN VALIDATION HVAC AIR HANDLING UNIT, PLENUM AND EQUIPMENT SUPPORT DESIGN VALIDATION MODIFICATI0NS DESIGNED AS REQUIRED DESIGN VALIDATION OUTPUT DETAILED CALCULATIONS DESIGN VERIFIED DRAWING FOR EACH HANGER 1918R A-________

p.. hv= ,.trL. / /dk i is TU' ELECTRIC 9/15187

COMANCHE PEAK STEAM ELECTRIC STATION SLIDE J-HVAC STRUCTURAL DESIGN VALIDATION PROGRAM.

SUMMARY

FINAL' DOCUMENTATION 4 CRITERIA / INSTRUCTION STUDIES, AND TEST REPORTS. DESIGN VALIDATE INPUT. ' DESIGN VALIDATE OUTPUT l -l 2 k O I l ll ) J e-o 1918R !y l

r TV ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION SLIDE K i.\\ HVAC STRUCTURAL DESIGN VALIDATION PROGRAM

SUMMARY

o REWORK AND DESIGN MODIFICATIONS REWORK REWORK ASSOCIATED WITH SPECIFIC HARDWARE IDENTIFIED AS REQUIRING MODIFICATION. FOR EXAMPLE: GROUTING OF GAPS UNDER BASE ANGLES AND PLATES TOROUING OF LOOSE BOLTS-DESIGN MODIFICATIONS RESULTING FROM HVAC STRUCTURAL DESIGN VALIDATION AND ARE DUE T0: MEMBER OVERSTRESS WELD OVERSTRESS i INSUFFICIENT NUMBER OF ANCHOR BOLTS REPAIRING OF P00R QUALITY WELOS-ANCHOR BOLTS WITH INSUFFICIENT EMBEDMENT OR SPACING l UNACCEPTABLE SLENDERNESS RATIOS I DUCT OVERSTRESS j INSUFFICIENT NUMBER OF DUCT STIFFENERS NONCONFORMANCE OF DUCT CONSTRUCTION REQUIREMENTS I L l-1918R 1

o w 3 2 l a TV ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION SLIOE L HVAC STRUCTURAL DESIGN VALIDATION PROGRAM

SUMMARY

l l 0 LOCATION OF PROGRAM ACTIVITIES WALKDOWN EBASCO (UNIT i & 2) - SITE i AS-BUILT DRAWINGS l EBASCO'(UNIT 1 & 2) - SITE. NEW YORK DESIGNPdOCEDURES EBASCO (UNIT 1 & 2) - NEW YORK 1 DESIGN VERIFICATION EBASCO (UNIT 1 & 2) - NEW YORK 1 STUDIES EBASCO (UNIT 1 & 2) - NEW YORK 1 TESTING EBASCO NEW YORK CCL - NORTH CAROLINA I 1918R

r.

.') TV ELECTRIC 9/15/87 9 COMANCHE PEAK STEAM ELECTRIC STATION-SLIDE M i

SUMMARY

OF ISSUE RESOLUTION i .,. O ISSUE RsSOLUTION PROCESS 0

SUMMARY

OF58INDfVIOUAL.ISSUESANDTHEIRRESOLUTION s D 1918R-L _ _ = = _ _ -..

r TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION SLIDE N HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

0 ISSUE RESOLUTION PROCESS ALL' PERTINENT DOCUMENTATION REVIEWED TO FULLY UNDERSTAND THE ISSUE ACTION PLAN DEVELOPED TO RESOLVE EACH ISSUE THROUGH i AS-DESIGNED AND AS-BUILT DATA COLLECTION CRITERIA AND PROCEDURES DEVELOPMENT, SPECIAL STUDIES. TEST PROGRAMS- -AND DESIGN ANALYSIS i-i GENERIC ISSUES' REPORT (GIR) E PROJECT STATUS REPORT I (PSR) DEVELOPED

SUMMARY

OF PROCEDURES AND REFERENCES WHICH RESOLVE EACH ISSUE IS INCLUDED IN GIR & PSR ACTION PLAN REVIEWED BY CPRT ACTION PLAN IMPLEMENTED IN DESIGN VALIDATION i J l L l 1918R l u__:____-_-__

t 1 TU ELECTRIC 9/15/87 COMANCHE PEAK' STEAM ELECTRIC STATION A.1 l HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE NO. A.1: CONCRETE VQlQS t o ISSUE l l GAPS IN EXCESS OF 1/16 INCH BETWEEN CONCRETE AND BASE ANGLES OF-I .THE HVAC SUPPORTS WERE NOT INCLUDED ON THE "AS-BUILT" DRAWINGS l OF THE SUPPORTS. l o RESOLUTION 1, l A. EXISTING GAPS BETWEEN ACCESSIBLE BASE ANGLES AND CONCRETE l 'ARE BEING GROUTED. j B. INACCESSIBLE BASE ANGLES WHERE GAPS EXIST WILL BE EVALUATED ANALYTICALLY MAKING CONSERVATIVE ASSUMPTIONS. DESIGN ANALYSIS MAY BE SUPPLEMENTED BY TEST DATA IF REQUIRED. l t i i 1918R

sc ? i' ,s TUELE5TRIC' 9/15/87 tC0MANCHE PEAK STEAM Etr.CTRIC STATION A.2 .co HVACSTRbCTURALDESIGNVALIDTIONGENERICISSUES

SUMMARY

ISSUE N0.'A.2: GAPS BETWEEN DUCI AND' DUCT SUPPORT ,/ =, o' ISSUE DUCT. SUPPORT (FABRIC ^TI0A AND INSPECTION PROCEDURES DO NOT SPECIFY A TOLERANCE FORTFIT-UP BETWEEN DUCT AND DUCT SUPPORT. THE HVAC DESIGN CALCULATIONS DO NOT ADDRESS THE EFFECT OF GAPS BETWEENDUCTANDDUCTSOPPORl'SANDTHEPOSSIBLELOSSOFLOAD RESTRAINING CAPABIt.ITY OF THE TRANSVERSE SUPPORTS. 4 .o RESOLUTION l GAPS BETWEEN DUCTS & SUPPORTS WERE WALKED DOWN AND WILL BE SHIMMED TO ZERO GAPS. 7 1918R e -~__:___

y___ b:- a L*4 TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION A.3 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE NO.' A.3: ATTACHMENT OF TRANSVERSE SUPPORTS TO DUCTS l O. ISlVE .] -THE TRANSVERSE'HVAC SUPPORTS HAVE BEEN DESIGNED FOR TRANSVERSE' AND VERTICAL LOADING ONLY. THE POSITIVE ATTACHMENT OF A TRANSVERSE SUPPORT TO THE DUCT MAY GENERATE LONGITUDINAL LOADING WHICH'THE SUPPORT HAS NOT BEEN DESIGNED TO CARRY. THE HVAC DESIGN CALCULATIONS DID NOT ADDRESS THE EFFECTS OF LONGITUDINAL LOADING ON. TRANSVERSE SUPPORTS. o RESOLUTION - DESIGN VALIDATION IS PERFORMED BASED ON "AS BUILT" DUCT TO SUPPORT CONNECTION DETAILS. TRANSVERSE HANGERS WITH POSITIVE ATTACHMENT TO DUCTS OR SHIMMED TO ZERO GAPS ARE MODELED AS ATTACHED TO THE DUCTS AND THEREFORE. ACCOUNT FOR THE LONGITUDINAL LOADS. PROCEDURES FOR MODELING ARE GIVEN IN SAG.CP24 FOR SEISMIC CATEGORY I DUCT SUPPORTS AND SAG.CP32 FOR SEISMIC CATEGORY II DUCT SUPPORTS. 1 i 1918R 4Whmmm-- --____m_-m____

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SUMMARY

c. 4 'I ISSUE N0. 4 1 INTEGRITY OF DUCT JOINTS L> ^ >

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i t. '/g 7 Io ISSUE n .C a THF DESIGNgCALCULATIONS FOR HVAC DUCTS WERE BASED ON THE v3 o .1 'COMPRESSIfELOADCAPACIT:V0FTHEDUCT. IF THE TENSION LOAD i + f CAPACITYiIS LESS THAN THE COMPRESSIVE LOAD-CAP,/iCITY, THE-v STRUCTURAL INTEGRITY AND LEAK TIGHTNESS OF THE DUCT SECTIONSiMAY t BE COMPROMISED. j . ( t,. .x t 4 9 4 0 RESOLUEL@lc > <a t c s. i ( TESTS ARE BEING PERFORMED TO CONF 1"i THE EFFECTS OF A TENSIONq l V 1 ' L,OAD,-(l.0NGITUDINALLY THROUGH THE DCCT) ON THE STRUCTUR.A,L . INTEGRITY;ANpLEAK.TIGHTNESSOF~THEDUCTANDTRANSVERSEDUCT g, U-} 4

' c JOINTS.

THETESTWILLDETERMINETHEDUCTLOADCp;PACIT,YATTHE '5 '.ff ( TRANSVERSE J0INTS. y -( s et' \\', h J OR' TEST SPECIFICATION, SEE SAG.CP33. M y/ ,) ,1 k@ l' y j l <s, /j i c t ) J{ l i 'c' ) j c b> i b,.. f g .(:

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o, r. TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION A.5 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE N0. A.5: EFFECTS OF OPENINGS IN DUCTS 0 ISME l THE HVAC TEST PROGNAM MAY NOT ADEQUATELY ADDRESS THE' EFFECTS OF OPENINGS ON DUCT SECTION PROPERTIES OR DUCT LOAD CAPACITY. o RESOLUTION TEST SPECIFICATION SAG.CP33 " SPECIFICATION FOR STATIC TESTING OF HVAC DUCTS", ADDRESSES THIS ISSUE. THESE TESTS ARE BEING DONE ON DUCTWORK OPENINGS WITH IDENTICAL CONSTRUCTION TO THE DUCTWORK INSTALLED AT CPSES. i I i l r 1918R .I I _a

? v TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION A.6 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE NO. A.6 NON-LINEAR RESPONSE OF FIRE DAMPER SLEEVE o 11SE ALLOWABLE LOADS FOR TRANSFER AIR SLEEVES (IN WHICH FIRE DAMPERS ARE INSTALLED) WERE BASED ON 1.5 x PEAK ACCELERATION VALUE. BECAUSE THE SLEEVES REST IN THE WALL OPENING WITH A 1-INCH TOP GAP AND 1/2-INCH SIDE GAPS. FOR CASES WHERE THE VERTICAL RESPONSE OF DUCT AT THE SLEEVES IS I EXPECTED TO BE MORE THAN 1G. NON-LINEAR SEISMIC RESPONSE OF THE SLEEVE CANNOT BE PROPERLY ADDRESSED BY THIS APPROACH O RESOLUTION FIRE DAMPERS AND SLEEVES ARE BEING REPLACED WITH GAPS ELIMINATED. 4 1918R

TU ELECTRIC 9/15187 COMANCHE PEAK STEAM ELECTRIC STATION A.7 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE NO. A.7 BUCKLING 0F CANTILEVER LEG OF BASE ANGLE O ISSUE 1 l LOCALIZED BUCKLING 0F BASE ANGLE VERTICAL LEGS WAS NOT EVALUATED AS PART OF THE HVAC DESIGN CALCULATIONS. CONCERN HAS BEEN RAISED THAT THE DUCT SUPPORT DESIGN METHODOLOGY FOR EVALUATING THE CANTILEVER PORTION OF THE SUPPORT'S BASE ANGLE HAD NOT CHECKED FOR WORST CASE LOADING TO ASSURE THAT NO BUCKLING 0F THE VERTICALLY PROJECTED ANGLE LEG OCCURS. O RESOLUTION DESIGN ANALYSIS OF BASE ANGLES INCLUDES CONSIDERATION OF BUCKLING OF ANGLE LEGS AS SPECIFIED IN ATTACHMENT E2 0F SAG.CP24. 1918R

o 1 p TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION A.8 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

-ISSUE NO. A.8: ANCHOR BOLT PERPENDICULARITY REQUIREMENTS ? O ISSE ANY EXISTING ANGLE ~BETWEEN THE ACTUAL "AS-BUILT" CENTER LINE OF DRILLED IN EXPANSION ANCHORS AND A LINE-PERPENDICULAR TO THE CONCRETE SURFACE COULD SIGNIFICANTLY ALTER THE OVERALL SUPPORT LOAD CAPACITY BY REDUCING ANCHOR BOLT LOAD CAPACITY. THE HVAC SUPPORT DESIGN MUST CONSIDER ANY REDUCTION JR4 THE RATED CAPACITY OF ANCHOR BOLTS DUE TO i INSTALLATION ANGULARITY. o RESOLUTION' ANCHOR BOLTS WITH ANGULARITY GREATER THAN SIX DEGREES ARE -IDENTIFIED AND WILL BE MODIFIED. .HOWEVER. THERE IS A PLAN TO USE ANCHOR BOLTS WITH ANGULARITY BETWEEN SIX AND TEN DEGREES AT REDUCED CAPACITY, .AND FIX ALL ANCHOR BOLTS WITH ANGULARITY AB0VE TEN j DEGREES. THIS PLAN REQUIRES SWEC CONCURRENCE PRIOR TO IMPLEMENTATION. 1 1918R

p TU ELECTRIC 9/15/87 j

COMANCHE PEAK: STEAM ELECTRIC STATION A.10 i HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

l ISSUE NO. A.10: MISSING GASKET SECTIONS.' MISSING BOLTS LOOSE BOLTS, AND MISSING PRESSURE LEAK TEST DOCUMENTATION ~ I I o ISEE THERE IS'NO ADEQUATE ASSURANCE THAT DUCTWORK INSTALLED INSIDE-THE CONTROL ROOM WILL BE ABLE TO PERFORM ITS REQUIRED SAFETY FUNCTION DUE TO AMOUNT OF RECONSTRUCTION PERFORMED.AND THE LACK 0F PRESSURE TEST DATA. j 0 RESOLUTION-THIS ISSUE-'IS RESOLVED THROUGH VERIFICATION OF BOLTS ON . DUCT FLANGES AND LEAK TESTING IN ACCORDANCE WITH CONSTRUCTION & QC PROCEDURES AND SPECIFICATIONS. PROCEDURES REQUIRE THAT DUCTWORK BE LEAK TESTED, INCLUDING REWORK OR MODIFICATION WHICH-AFFECTS PREVIOUSLY PERFORMED l LEAK TESTING. l PROCEDURES: ECC 10.99-HV-005 N0A 3.09-6.02 SPECIFICATION: 2323-MS-85 l i t i T 1918R l

t l f, ' 9 TU ELECTRIC 9/15/87 1 CUMANCHE PEAK STEAM ELECTRIC STATION A.11 HVAC STRUCTURAL' DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE N0.-A.11: LOOSE GRAVITY DAMPER COUNTERWEIGHTS AND COUNTERBALANCE ARMS L l o 1S3U1 i TWO TYPES OF. DEVIATIONS HAVE BEEN IDENTIFIED ON GRAVITY DAMPERS - (1) LOOSE COUNTERWEIGHTS & (2) LOOSE COUNTERBALANCE ARMS. O RESOLUTION A DCA WAS ISSUED TO CHANGE THE ORIGINAL DESIGN.TO TACK WELD THE COUNTERWEIGHTS AND COUNTERBALANCE ARMS.AFTER BALANCING 0F THE-SYSTEM. THIS CHANGE PERMANENTLY LOCKS COUNTERWEIGHTS & COUNTER BALANCE ARMS IN PLACE. i ) i i L 1 1 -1918R

i TU ELECTRIC 9/15/87 -COMANCHE PEAK STEAM ELECTRIC STATION A.12 HVAC' STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

o .l q ' ISSUE NO. A.12: NON-ATTACHMENT OF THE DUCT TO-THE SUPPORT AS SHOWN l ON THE SUPPORT DETAIL DRAWING. I F 0-IS$1 1 NON-ATTACHMENT OF-THE DUCT TO THE SUPPORT MAY RESULT IN i INABILITY OF THE DUCT SUPPORTS TO PERFORM THEIR INTENDED STRUCTURAL FUNCTION & MAY LEAD TO FAILURE DURING A SEISMIC EVENT. O RESOLUTION COMPLETE "AS-BUILT" INFORMATION IS BEING OBTAINED IN ACCORDANCE WITH DOCUMENT CPE-EB-FVM-CS-029 AND SHOWN ON "AS-BUILT" DRAWINGS. THE SUPPORTS ARE BEING DESIGN ANALYZED & UPGRADED IN ACCORDANCE WITH DESIGN DOCUMENTS AS { REQUIRED. 'l i i a 'l j 1918R 4 i_..____________...__.__

v. p TU ELECTRIC 9/15/87 " r... C0MANCHE PEAK STEAM ELECTRIC STATION A.13 .HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

l- -ISSUE NO. A.133 INADEQUATE WELD FIT-UP INSPECTION DOCUMENTATION q 0 ISSE 1 A LACK 0F DOCUMENTATION EXISTS FOR WELD FIT-UP GAPS. THIS ' ISSUE MAY IMPACT THE STRENGTH THAT CAN BE DEVELOPED BY STRUCTURALEWELDS. WELDS WITH EXCESSIVELY LARGE GAPS MAY ,e L HAVE INSUFFICIENT EFFECTIVE THROAT. O RESOLUTION A-GENERIC: EVALUATION OF INADEQUATE WELD FIT-UP HAS BEEN' PERFORMED'T0 DETERMINE THE EFFECT OF ANY LESS THAN ADEQUATE FIT.-UP. GAPS ON THE EFFECTIVE THROAT OF STRUCTURAL WELDS.- j c THE RESULTS OF'THE EVALUATION WILL BE UTILIZED IN THE HVAC-REQUALIFICATION. EXISTING GROOVE WELDS IN STRUCTURAL' MEMBERS ARE CONSIDERED TO HAVE NO STRUCTURAL CAPACITY IN DESIGN VALIDATION. j i t 4 1918R 1 l

H, w s ITU ELECTRIC 9/15/87- . COMANCHE PEAK STEAM ELECTRIC STATION -A.14 e r HVAC-STRUCTURAL. DESIGN VALIDATION GENERIC ISSUES

SUMMARY

q ISSUE.NO. A.14: RICHMOND INSERTS WITH LESS THAN MINIMUM. REQUIRED THREAD ENGAGEMENT & PRETENSIONING 0F RICHMOND INSERTS BY TURN-0F-THE-NUT METHOD. f 0 ISSE .WITH LESS THAN:THE SPECIFIED MINIMUM THREAD ENGAGEMENT, RICHMOND INSERT FAILURE MAY OCCUR WELL BELOW THE SPECIFIED ALLOWABLE LOAD LEVELS-DUE'T0. SHEAR FAILURE IN THE BOLT OR IN~THE' THREADED-REGION OF THE INSERT ITSELF. PRETENSIONING. BY USE OF THE TURN-0F-THE-NUT METHOD MAY DAMAGE THE INSERT-AND/0R THE BOLT.- .O RESOLUTION' '(1) 'QC IS VERIFYING THREAD ENGAGEMENT. (2) SWEC HAS PERFORMED TESTS T0 ESTABLISH THE ALLOWABLE LOADING FOR BOLTING IN RICHMOND INSERTS WITH LESS THAN FULL THREAD ENGAGEMENT INCLUDING THE EFFECTS OF INSTALLATION BY THE TURN-0F-THE-NUT METHOD. ' i-(3) THE RESULTS OF THE SWEC TESTING PROGRAM ARE BEING INCORPORATED INTO THE HVAC SUPPORT VALIDATION PROGRAM. l -1918R

TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION A.15 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

~ ISSUE NO. A.15: NO DOCUMENTATION OF INSPECTION BY HVAC DUCT CONTRACTOR ON MATERIAL RECEIVED FROM THE PRIMARY CONTRACTOR 3t- ~ 0-IS.S.kE WITHOUT DOCUMENTATION OF INSPECTION UPON RECEIPT OF MATERIAL. UNCERTAINTY EXISTS AS TO THE QUALITY OF MATERIAL USED FOR THE CONSTRUCTION OF HVAC DUCTS AND DUCT SUPPORTS. WITHOUT SOME ASSURANCE OF MATERIAL QUALITY. STRUCTURAL AND MECHANICAL PROPERTIES NECESSARY FOR THE DESIGN VALIDATION OF HVAC DUCTS AND DUCT SUPPORTS MAY BE QUESTIONABLE. o BE!3LUTIOR 1) EVALUATION OF HVAC CONTRACTOR'S INTERNAL AUDITS. RECEIVING INSPECTION RECORDS. AND MATERIAL CONTROL TO PROVIDE ASSURANCE THAT MATERIALS THEY SUPPLIED WERE OF ADEQUATE QUALITY S0 THE DESIGN VALIDATION PROGRAM CAN BE ACCOMPLISHED USING THE EXISTING DESIGN CRITERIA. -[ 2) EVALUATION OF THE PRIMARY CONTRACTOR'S RECORDS RELATED TO THEIR PROCUREMENT CONTROLS. RECEIVING INSPECTION. MATERIAL CONTROLS. AND INTERNAL AUDITS TO PROVIDE ASSURANCE THAT MATERIALS TRANSFERRED TO THE HVAC CONTRACTOR WERE OF ADEQUATE QUALITY S0 THE DESIGN VALIDATION PROGRAM CAN BE ACCOMPLISHED USING THE EXISTING DESIGN CRITERIA. 4 i 1918R l L - = _ - _ =____ L

t j

e' 9^

TU ELECTRIC 9/15/87 COMANCHE PEAK' STEAM ELECTRIC STATION A.16

HVAC' STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE N0. A.16: NO INSPECTION DOCUMENTATION' LOCATED FOR SELECTED-SAMPLE BY BAHNSON. (CAR-099X) L 'o ISSE 'THE. ADEQUACY. COMPLETENESS AND RETRIEVABILITY OF THE HVAC RECORDS GENERATED BY BAHNSON-SERVICE CORPORATION AND THEIR EFFECTS ON THE QUALITY OF CONSTRUCTION IS BEING QUESTIONED. O RESOLUTION THIS-ISSUE IS ADDRESSED BY THE FACT THAT THE SEISMIC l CATEGORY I DESIGN DRAWINGS WILL REFLECT THE "AS-BUILT" j CONFIGURATION AND ARE-DESIGN VALIDATED AND QC INSPECTED ~AND DOCUMCNTED. l i 1918R

-9 TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION A.17 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

1 ISSUE N0. A.17: BAHNSON' INSPECTION PROGRAM FAILURE TO IDENTIFY NON-CONFORMANCE WITHIN DOCUMENTED INSTRUCTIONS. i PROCEDURES-AND DRAWINGS (NRC IR 446/8602 V-17) '~ .O ISSUE THIS ISSUE ENCOMPASSES ALL WELDING AND ANCHOR BOLT INSTALLATIONS ON UNIT 2 HVAC DUCT SUPPORTS. THE NRC IDENTIFIED THE FOLLOWING: A. INTERMITTENT FILLET WELDS BETWEEN THE DUCT AND THE DUCT SUPPORT DID NOT BEGIN OR TERMINATE WITHIN 1/8" FROM THE JOINT ENDS. B. QUANTITATIVE WELD ATTRIBUTES-(I.E., SIZE LENGTH AND LOCATION) DID NOT CONFORM TO THE REQUIREMENTS OF THE PROCEDURES AND DRAWINGS. i C. WELD QUALITY DID NOT CONFORM TO THE REQUIREMENTS OF THE PROCEDURES. 1 D. ANCHOR BOLT INSTALLATIONS DID NOT CONFORM TO THE REQUIREMENTS OF THE PROCEDURES. O RESOLUTION (1) WALKDOWN PROGRAM WILL BE PERFORMED ON ALL SEISMIC HVAC DUCTS AND SUPPORTS IN UNIT 2. (2) THE DESIGN DRAWINGS WILL REFLECT THE "AS-BUILT" CONFIGURATION AND ARE DESIGN VALIDATED. 1918R l

j TU ELECTRIC 9/15/87 COMANCHE-PEAK STEAM ELECTRIC STATION A.18 HVAC STRUCTURAL DESIGN' VALIDATION GENERIC ISSUES

SUMMARY

? j ISSUE N0. A.18: BAHNSON SUPPORT GAPS (NRC IR 446/8602-U-18) l Lo IS.SME i THE-SEISMIC QUALIFICATION REPORT OF SEISMIC CATEGORY I DUCTWORK AND HANGERS FOR UNIT 1 DID NOT ADDRESS GAPS BETWEEN CONCRETE AND SUPPORT STEEL. THIS SAME PHILOSOPHY ALSO APPLIES.TO THE UNIT 2 SUPPORTS. ) GAF, UP-TO 3/8-INCH WHERE IDENTIFIED IN THE AREAS AROUND. THE ANCHOR-BOLTS ON' UNIT 2 SUPPORTS. THE "AS-BUILT" SUF10RT DRAWINGS DID NOT IDENTIFY THE EXISTENCE-0F GAPS. .THE NRC IDENTIFIED THIS AS AN UNRESOLVED ITEM WITH RESPECT T0 1AJOR. ATTRIBUTES REQUIRED TO BE "AS-BUILT" AND DESIGN VEF;FIED. O RES1 LUTION A. EXISTING GAPS BETWEEN ACCESSIBLE BASE ANGLES AND CONCRETE WILL BE GROUTED. B. INACCESSIBLE BASE' ANGLES WHERE GAPS EXIST WILL BE-I EVALUATED ANALYTICALLY MAKING CONSERVATIVE ASSUMPTIONS. DESIGN VALIDATION MAY BE SUPPLEMENTED BY I TEST DATA IF REQUIRED. i ) 1918R q

TU ELECTRIC 9/15/87 i.. CDMANCHE PEAK STEAM ELECTRIC STATION A.19 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE NO. A.19: BAHNSON. SQUARE GROOVE WELDS. (NRC IR 446/8602-U-19 & CAR-107)) o. ISSE BAHNSON (BSC) DRAWINGS DID NOT SPECIFY GROOVE DEPTHS OR EFFECTIVE THROAT DIMENSIONS ON THE SQUARE GROOVE WELDS SHOWN IN THE SUBJECT DRAWINGS. IN MOST CASES THESE WELDS ARE INTENDED TO BE FULL PENETRATION WELDS. THEREFORE, GROOVE DEPTH AND EFFECTIVE THROAT ARE NOT REQUIRED IN THE WELD SYMBOLS. HOWEVER. PRIOR TO TV ELECTRIC QUALITY CONTROL PERFORMING INSPECTIONS ON HVAC ddPPORTs BSC DID NOT PERFORM FIT-UP. INSPECTIONS ON FULL PENETRATION WELDS. THEREFORE. THE EFFECTIVE THROAT FOR THESE WELDS IS INDETERMINATE AT-THIS TIME. 0 ' RESOLUTION "AS-BUILT" CONFIGURATION OF THE DUCT SUPPORTS IS DESIGN VALIDATED. IN DESIGN VALIDATION, EXISTING SQUARE GROOVE WELDS ON STRUCTURAL MEMBERS ARE NOT CONSIDERED STRUCTURAL WELDS. l 1 i l 1 l 1 1918R {L

l 4 TU ELECTRIC 9/15187 COMANCHE PEAK STEAM. ELECTRIC STATION B.i i HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

( l ISSUE NO. B.1: DISCREPANCIES IN SUPPLIER PROVIDED HVAC SUPPORT { DOCUMENTS-(SEISMIC QUALIFICATION OF HVAC SUPPORTS - / I SDAR CP-85-5LI) o 11SE THIS ISSUE CENTERS ON THREE SUB-ISSUES OF DESIGN CONTROL. O A BREAKDOWN IN COMMUNICATION BETWEEN THE SUPPORT. INSTALLER (BAHNSON) AND THE-SUPPORT DESIGNER (CCL). l 0 THE ACCURACY OF THE BAHNSON' SUPPORT FIELD SKETCHES AND -DUCT LAYOUT INFORMATION INTENDED TO REPRESENT "AS-BUILT". CONDITIONS. WAS NOT ADEQUATE. o QC INSPECTION OF THE DUCTS AND SUPPORTS FAILED T0. IDENTIFY THE POTENTIAL PROBLEM 0F IMPACT ON DESIGN STEMMING FROM DIFFERENCES BETWEEN "AS-BUILT" AND "AS-DESIGNED" CONFIGURATIONS. y o RESOLUTION SEISMIC HVAC DUCTS, DUCT SUPPORTS. PLENUMS AND EQUIPMENT . SUPPORTS WILL BE "AS-BUILT". DESIGN VALIDATION WILL BE PERFORMED BASED ON THE AS-BUILT DRAWINGS. l i 1918R

y ,j m TU. ELECTRIC ~ l9/15/87-~ l / v w;- COMANCHE: PEAK STEAM ELECTRIC-STATION

B.2 d

o 1 HVAC STRUCTURAL: DESIGN VALIDATION GENERIC ISSUES

SUMMARY

J e ] ~ mj -,: ISSUE NO. B.2r BAHNSON DUCTWORK SEPARATION CRITERIA ~ (CAR-057)L ,i o LtiUE THE SPECIFICATION FOR DESIGN OF:HVAC DUCT AND. DUCT SUPPORTS GAVE' CLEARANCE-CRITERIA'(AIR l GAP) BETWEEN HVAC COMPONENTS] AND OTHER COMMODITIES. -IMPLEMENTATION OF THIS COULO NOT BE. I CONFIRMED DUE~TO OMISSION OF SPECIFICATION 2323-MS-100 FROM' BAHNSONtS CONTRACT. i 0-RESOLUTION-J -THE MINIMUM CLEARANCE WITH PIPING HAS.BEEN INCORPORATED. INTO THE DESIGN SPECIFICATION-2323-MS-85-AND THE WALKDOWN-PROCEDURE!CPE-EB-FVM-CS-029 AND CPE-EB-FVM-CS-063. THE g "AS-BUILT" DRAWINGS IDENTIFY ALL VIOLATIONS'TO THE EXISTING -CRITERIA; THE PROGRAM IMPLEMENTED BY STONE AND WEBSTER WILLl IDENTIFY CLEARANCE CRITERIA FOR ALL COMMODITIES. LA~ BACKFIT PROGRAM WILL BE INCORPORATED INTO THE HVAC DESIGN VALIDATION PROGRAM FOR THE NEW CRITERIA. .l 'l i I i l + l 1918R

u, x: 1 TU ELECTRIC 9/15/87 'a COMANCHE PEAK STEAM ELECTRIC STATION B.3 l HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

i ISSUE NO. B.32. DEFICIENCIES IN BAHNSON'S S'EISMIC SUPPORT j "AS-BUILT" VERIFICATION PROGRAM { I (CAR-084 & CAR-86-09) 3 ~ O ISSljE BAHNSON'S FINAL "AS-BUILT" DRAWINGS DID NOT INCLUDE, OR v RECORDED INCORRECTLY, VARIOUS SUPPORT ATTRIBUTES SUCH AS: WELD SIZES DIMENSIONS OF GAPS AND ANCHOR BOLT AND HILTI EMBEDMENTS. O RESOLUTION ( A'WALKDOWN PROGRAM IS BEING PERFORMED BY EBASCO ON ALL SEISMIC DUCTS, DUCT SUPPORTS AIR HANDLING UNITS, PLENUMS -l AND EQUIPMENT SUPPORTS. THE DESIGN VERIFICATION WILL BE PERFORMED FOR THE AS-BUILT CONFIGURATION. j i ) i 1918R l l

~ .c 4 ,t : l + TU ELECTRIC-9/15/87 COMANCHE-PEAK STEAM ELECTRIC STATION B.4 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

) ) l ISSUE NO. B.4: BAHNSON UNIT 2 HVAC HANGER WORKIDOCUMENT j REINSPECTION WAS FOUND TO BE INDETERMINATE (CAR 108)- ~

O IMUE l

i BAHNSON'S QUALITY PROGRAM DID NOT PROVIDE SUFFICIENT DOCUMENTATION-TO ASSURE.THAT CAR NO. 0019 (A REVIEW 0F ALL COMPLETED.AND INSPECTED WORK IN UNIT 2 TO ESTABLISH A LEVEL 0F CONFIDENCE) WAS COMPLETED. AS SUCH BAHNSON CAR NO. 1 .0033 RECOMMENDED THAT ALL UNIT 2 DOCUMENTATION. HANGER l INSPECTION REPORTS ~AND ENGINEERING DRAWINGS BE-REVIEWED T0 i DETERMINE IF IN FACT CAR NO. 0019 WAS CORRECTLY CLOSED. BAHNSON CAR NO. 0033 WAS SUBSEQUENTLY SUPERCEEDED BY TU j ELECTRIC CAR NO. 108. 1 0 RESOLUTION { l A WALKDOWN PROGRAM IS BEING PERFORMED ON SEISMIC HVAC DUCTS AND THEIR SUPPORTS FOR UNITS N0. 1 AND NO. 2. "AS-BUILT" DRAWINGS ARE GENERATED FOR EACH INDIVIDUAL SUPPORT AND ARE j DESIGN VALIDATED. DOCUMENTATION REVIEW WILL BE MADE OF BAHNSON'S PROCEDURES. l RECORDS AND QA PROGRAM TO ESTABLISH CONFIDENCE LEVEL ON l ITEMS NOT VISUALLY VERIFIABLE. I I 1 ll l l l 1918R

TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION B.10 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE NO. B.10: DEVIATIONS FROM SMACNA AND ERDA SPECIFICATIONS FOR DUCTWORK I o ISSUE THE HVAC PRESSURE DESIGN DID NOT CONSISTENTLY MEET THE REQUIREMENTS OF THE SMACNA AND ERDA CODES. o RESOLUTION TESTE WILL ADDRESS THE PRESSURE DESIGN OF THE DUCTWORK (SPEC. SAG.CP33). THE RESULTS OF THE TESTING PROGRAM, ALONG WITH VARIOUS SPECIAL STUDIES PROVIDE THE TECHNICAL BASIS FOR THE RESOLUTION OF THIS ISSUE. I 1918R

? TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION B.11 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE N0. B.11: LOCA PRESSURE ON DUCTS (SDAR CP-87-65) o IEEME DUCT SYSTEMS IN THE VICINITY OF SAFETY RELATED EQUIPMENT IN- ~ THE REACTOR BUILDING HAVE NOT BEEN EVALUATED FOR'THE i EFFECTS OF LOCA PRESSURE WHICH COULD RESULT IN A TOTAL FAILURE OF THE DUCT SYSTEM AND SUBSEQUENT DAMAGE TO'THE SAFETY RELATED EQUIPMENT. O RESOLUTIQH A FAILURE EVALUATION STUDY OF THE DUCTWORK IN THE REACTOR BUILDING.IS BEING PERFORMED TO ENSURE THAT IT WILL NOT DAMAGE OTHER SAFETY EQUIPMENT DUE TO LOCA PRESSURE. l i l l 1918R ) i

'o ^6' .TU ELECTRIC 9/15/87 f COMANCHE PEAK-STEAM ELECTRIC STATION B.12 HVAC STRUCTURAL DESIGN VALIDATION' GENERIC ISSUES

SUMMARY

ISSUE N0. B.12: TORNAD0' PRESSURE ON DUCTS (SDAR CP-87-69) O IMME TORNADO PRESSURE HAS NOT BEEN CONSIDERED IN THE DESIGN OF 1 HVAC DUCTS OUTSIDE-0F THE REACTOR BUILDING. 0 RESOLUTION A STUDY IS BEING PERFORMED TO EVALUATE THE TRANSIENT EFFECT OF TORNADO PRESSURE ON HVAC DUCTWORK 0UTSIDE OF THE REACTOR BUILDING. l lC i l ) l 1918R e 1 L____- --_ -. l

.TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION B.13 HVAC STRUCTURAL DESIGN VALIDATION GENERIC: ISSUES

SUMMARY

l . ISSUE-NO. B.13i MEASUREMENT OF EMBEDMENT FROM TOP 0F CONCRETE I TOPPING o IS$jf IN SEVERAL BUILDING ELEVATIONS A 2-IN. ARCHITECTURAL TOPPING 0F A NON-VERIFIABLE INTEGRITY WAS PLACED OVER THE I STRUCTURAL CONCRETE. THE PLACEMENT OF HILTI EXPANSION j ANCHORS IN.THE AREAS WHERE THIS ARCHITECTURAL TOPPING -EXISTS MUST BE OF SUFFICIENT LENGTH TO ACCOMMODATE THE 2" TOPPING AND STILL MAINTAIN THE STRUCTURAL CONCRETE 1 EMBEDMENT DEPTH-REQUIRED TO ENSURE THE SUPPORT DESIGN I ADEQUACY. j 0 RESOLUTION THE=HVAC GENERAL INSTRUCTIONS IDENTIFIES THE FLOORS WITH ' CONCRETE TOPPING AND WHICH REQUIRE A REDUCTION OF 2 IN. FROM THE EMBEDMENT LENGTH OF CONCRETE ANCHORS IN THE DESIGN VALIDATION OF SUPPORTS MOUNTED ON THESE FLOORS. l 1 1 l b L 1918R 1 l l

T.L I e -TV ELECTRIC 9/15/87-

COMANCHE PEAK STEAM ELECTRIC STATION B.14'

'{ HVAC-STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

i I 1 ISSUE NO.-8.14: BOLT HOLE TOLERANCE AND EDGE DISTANCE VIOLATION -0 ISSUE l BOLT H0LE TOLERANCES AND MINIMUM EDGE DISTANCE REQUIREMENTS j i 00 NOT MEET AISC SPECIFICATIONS. o RESOLUTION l THIS ISSUE IS BEING ADDRESSED VIA AN ENGINEERING EVALUATION. I 2 1918R _ _=___ _

) 'TU ELECTRIC-9/15/87 -COMANCHE PEAK STEAM ELECTRIC STATION B.15 HVAC' STRUCTURAL: DESIGN VALIDATION GENERIC ISSUES

SUMMARY

i g' . ISSUE NO. B.15: CONTROLLING LOAD CASE FOR DESIGN L O IS.S.UE 7 t i [ -GIBBS & HILL DETERMINED THAT THE DESIGN OF CABLE TRAY, SUPPORTS WAS GOVERNED BY THE OBE EVENT CITING SECTION 3.8.4 l OF.THE CPSES FSAR WHICH ALLOWS A 60 PERCENT INCREASE IN L ALLOWABLES FOR STRUCTURAL STEEL BETWEEN OBE.AND SSE' EVENTS L AND THE FACT THAT IN ALL LOAD CASES THE EQUIVALENT STATIC i 160 PERCEfT OF THE CORRESPONDING ACCELERATIONS FOR OBE I EVENTS. HOWEVER THE 60 PERCENT INCREASE IN ALLOWABLES CITED IN THE CPSES FSAR IS APPLICABLE TO STRUCTURAL STEEL ONLY. AND.N0T CATALOG ITEMS SUCH AS RICHMOND INSERTS AND HILTI KWIK BOLTS. BY DESIGNING THESE CATALOG COMPONENTS TO THE OBE EVENT. THE. MANUFACTURER'S DESIGN FACTOR 0F SAFETY MAY NOT BE MAINTAINED FOR THE SSE EVENT. O RESOLUTION ALL HVAC SUPPORTS AND THEIR COMPONENTS ARE DESIGN ANALYZED i FOR THE EFFECTS OF OBE AND SSE LOADS BY EITHER CONSERVA-TIVELY COMPARING SSE CONDITIONS TO OBE ALLOWABLES, OR BY SEPARATE EVALUATION OF THE SSE AND OBE CONDITIONS. ( s i l 1918R-p -l -..--____------------]

p TV ELECTRIC' 9/15187 COMANCHE' PEAK STEAM ELECTRIC STATION 'B.16 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

l y

ISSUE NO. B.16:

SEISMICRESPONSECOMBINATIONMEiHOD l o ISSUE l i. A. IN RESPONSE SPECTRA ANALYSES, THE REQUIREMENTS FOR COMBINING MODAL RESPONSES, CONSIDERING CLOSELY SPACED MODES, PER NRC REGULATORY GUIDE 1.92 MAY NOT HAVE BEEN FOLLOWED. B. DEAD WEIGHT LOAD MAY HAVE BEEN IMPROPERLY COMBINED WITH-THE SEISMIC LOAD IN HVAC DESIGN CALCULATIONS USING THE SRSS METHOD. .O RESOLUTION l A. NRC REGULATORY GUIDE 1.92 IS USED FOR CALCULATING j MODAL RESPONSES FOR DYNAMIC ANALYSIS PERFORMED USING THE RESPONSE SPECTRA METHC'0.(SAG.CP23) B. DEAD. WEIGHT LOAD IS NOT INCLUDED WITHIN THE' SEISMIC SRSS BUT ADDED SEPARATELY IN THESE COMBINATIONS. (SAG.CP24) -) r 1 i II l l 1918R 1 l l L

Tg4 , Did ; a. TU ELECTRIC 9/15/87 +. 4'- "l COMANCHE PEAK STEAM ELECTRIC STATION B.17-1 i f 5 HVAC' STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

3 r' q bHORBOLTDESIGN ( ISSUE NO. B.177 I 'ig' o ISSUE " ~ A. THE ADDITIONAL COMPRESSION ALONG THE T0E OF THE ANGLE ,SECTION AND THE ADDITIONAL ANCHOR BOLT TENSION DUE TO I THE ECCENTRICITY BETWEEN THE FRAME CONNECTION POINT AND THE ANCHOR BOLT MAY NOT HAVE BEEN CONSIDERED IN DESIGN CALCULATIONS. w B. AS DISCUSSED IN ISSUE B.15. THE USE OF OBE LOADS ONLY IR 0ESIGN CALCULATIONS INVOLVING HILTI EXPANSION 3 ANCHORS CAN RESULT IN.THE MANUFACTURER'S DESIGN FACTOR c 0F SAFETY NOT BEING MAINTAINED FOR THE SSE EVENT. C. ACI 349-76-MAY NOT HAVE BEEN CONSISTENTLY USED FOR i ANCHOR BOLT DESIGN. i D. THE USE OF OBE LOADS ONLY IN DESIGN CALCULATIONS E INVOLVING RICHMOND INSER1S CAN RESULT IN THE l MANUFACTURER'S DESIGN FACTOR OF SAFETY NOT BEING MAINTAINED FOR THE SSE EVENT. l E. DESIGN CALCULATIONS MAY NOT HAVE INCLUDED PRYING j ACTION IN THE DESIGN OF RICHMOND INSERTS. SOME l SUPPORTS MAY HAVE BEEN ATTACHED TO RICHMOND INSERT CLUSTERS WITHOUT TU ELECTRIC AUTHORIZATION. t l i +, L r 1918R l l-4 (..

x v TU ELECTRIC 9/15187 h' COMANCHE PEAK STEAM' ELECTRIC STATION B.17-2 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE NO. B.17: ANCHOR BOLT DESIGN (CONT'D) r F F. INSTALLATION TOLERANCES, ALLOWED BY THE DESIGN DRAWINGS, MAY,NOT HAVE BEEN CONSIDERED IN THE DESIGN CALCULATIONS. SOME DESIGN DRAWINGS ALLOW THE USE OF EITHER HILTI EXPANSION ANCHORS OR RICHMOND INSERTS'FOR .THEIR ANCHORAGE TO CONCRETE. CALCULATIONS SHOULD REFLECT THE SPECIFIC BOLT TYPE. G.- A PRYING ACTION FACTOR OF 1.5 MAY HAVE BEEN USED ON ANCHOR BOLTS WITHOUT JUSTIFICATION ( H. SUBSTITUTION OF RICHMOND INSERTS AND HILTI' EXPANSION ANCHORS AND MIXTURES OF THE TWO, MAY BE INCONSISTENT 'WITH' DESIGN' CALCULATIONS DUE TO DIFFERENT MINIMUM SPACINGS. DIFFERENT TOLERANCES AND DIFFERENT EMBEDMENT. LENGTHS FOR EACH TYPE. AS A RESULT, ALLOWABLE TENSILE. LOADS-IN RICHMOND INSERTS AND HILTI BOLTS MAY BE OVERESTIMATED. I. THE ASSUMPTION THAT HANGER CONNECTIONS EMPLOYING TWO-BOLT BASE ANGLES ARE FREE TO ROTATE HAS NOT BEEN ] i ] JUSTIFIED. j l J. SUPPORT CONSTRUCTION MAY HAVE ALLOWED THE USE OF ) " PRE-USED" H0LES WHICH HAD BEEN DRILLED USING A DIAMOND CORE BIT. HILTI EXPANSION ANCHORS INSTALLED IN SUCH H0LES WILL PROVIDE ULTIMATE STRENGTHS THAT ARE LESS THAN THOSE PUBLISHED IN THE HILTI DESIGN MANUAL UNLESS THE CORE BIT DIAMETER IS CONTROLLED. N0 j PROCEDURE FOR SUCH CONTROL WAS OBSERVED. 1918R

7 r;q[ 3 i e ar

• 4, j

TU ELECTRIC 9/15/87 l L'] a COMANCHE'9EAK ST M ELECTRIC KTATION B.17-3 HVAC STRUOTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

e -ISSUE NO. B.17: ANCH0R BOLT DESIGN (CONT'D) K. DESIGN CAi.CULATIONS MAY NOT HAVE USED THE REDUCE'D s /. ULTIMATE' CAPACITIES FOR 1-IN. DIAMETER HILTI i A r[ ( KWIK-80LisPUEiLISHEDIN1980. )I/' 'l I ?l '*'t t il c BESOLUTION A. OFFEETS AND ECCENTRICITIES OF STRUCTURAL MEMBERS AND { ',] / TRANSMISSION OF LOADS ARE ANALYTICALLY CONSIDERED IN ~17 DESIGN VALIDATIGN, THE ECCENTRICITY BETWEEN THE x FRAME / BASE ANKE CONNECTION AND THE ANCHOR BOLT PATTERNCENTROIOISIh'CLUDEDINTHEDESIGN 5 i VERIFICATION. THE ANALYSIS ADDRESSES THE EFFECTS OF, THE COMPRESSIVE FORCE ALONG,THE 70E OF THE ANGLE ON BOTH BASE ANGLE AND CONCRETE STRESSES. B. THE HVAC DESIGN VALIDATION USES A FACTOR OF SAFETY OF 4 F01 SSE LOAD CONDITIONS AND A FACTOR OF SAFETY OF S FOR OBE LOAD CONDITl?}lS. '\\ j C. ACI 349-76 IS NOT llSED FOR THE DEEIGN VAUDATION OF l CONCRETE' ANCHOR. BOLTS FOR KVAC SUPPORTS! ANALYTICAL TECHNIQUES ARE (JSED Tg Di' SIGN VERIFY ANCHORAGE . 'e ASSEMBLIES. j D. THEHVACDESIGH:VAEIDATIONUSESAFACt0ROFSAFETYOF 'l 3.0 FOR BOTH OBE ANCiSSE LOAD CONDITIONS. a l l' / 4 1918R i ' ll a 1

_s h, L [ ) TU: ELECTRIC 9/15/87 ' COMANCHE PEAK STEAM ELECTRIC STATION B.17-4 HV C STRUCTURAL DESIGN V'ALIDATION GENERIC ISSUES

SUMMARY

LISSUE N0; B'.'17: ANCHOR BOLT DESIGN iCONT'D) l E. . PRYING ACTION IS CONSIDERED IN THE DESIGN VALIDATION i 0F RICHMOND INSERTS AND HILTI BOLTS. q N F. DESIGN VALIDATION OF HVAC SYSTEMS IS' BASED ON M N "AS-BUILT"'INFORMATION. EFFECTS OF "AS-BUILT" I .WALKDOWN-TOLERANCES IS-CONSIDERED-i G.' SEE ITEM E AB0VE. j H. SEISMIC DESIGN EVALUATION OF ANCHORAGES IS BASED ON "AS-BUILT" SUPPORT DRAWINGS. a y y}I I. DASE' ANGLE AND ANCHOR BOLT SPRING STIFFNESSES ARE USED + IN'THE ANALYSIS MODEL. N0 ASSUMPTION IS MADE THAT THE l HANGER CONNECTIONS ARE FREE TO ROTATE. l 1 J. NONE-REQUIRED. HVAC' SUPPORT CONSTRUCTION DID NOT 'l ~ ) INSTALL HILTI BOLTS IN " PRE-USED" H0LES. DRILL BIT RECORDS SHOW.THAT NO DIAMOND CORE DRILL BITS WERE USED .i FOR HVAC HILTI BOLT INSTALLATIONS. w b K. ANCHOR BOLT DESIGN CRITERIA WHICH INCORPORATE THE ~ p-REDUCED HILTI BOLT ALLOWABLES ARE USED IN HVAC DESIGN i .b VALIDATION. i l ' fjG e \\~ k h 1918R-Y

~'~ i TU ELECTRIC 9/15/87 C0MANCHE PEAK STEAM ELECTRIC STATION B.18-1 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

i, ISSUE NO. B.18: DESIGN OF COMPRESSION MEMBERS o ISEE F i A. DESIGN CALCULATIONS FOR SUPPORT MEMBERS MAY NOT HAVE INCLUDED CONSIDERATION OF AISC RECOMMENDED MAXIMUM SLENDERNESS RATIOS. B. CRITERIA SHOULD BE ESTABLISHED TO CONSIDER THE EFFECT OF INPLANE SIDESWAY RESTRAINT ON THE EFFECTIVE LENGTH 4 FACTOR. C. THE DESIGN CALCULATIONS MAY NOT HAVE USED THE CORRECT LENGTH T0 DESIGN COMPRESSION MEMBERS FOR CANTILEVER TYPE SUPPORTS. THE DESIGN CALCULATIONS USE A VALUE OF K-1.0 TO CALCULATE THE MINOR AXIS SLENDERNESS RATIO. RATHER THAN THE VALUE OF K-2.0 FOR CANTILEVERS BASED ON THE ASSUMPTION THAT THE DUCT PROVIDES LATERAL SUPPORT. JUSTIFICATION FOR THIS ASSUMPTION IS STILL PENDING. D. THE DESIGN CALCULATIONS MAY NOT HAVE CONSIDERED WELD UNDERCUT EFFECTS ON MEMBER SECTION PROPERTIES. E. TOLERANCE ON PLUMBNESS OF VERTICAL MEMBERS SHOULD BE CONSIDERED IN DESIGN CALCULATIONS. F. FOR PURPOSES OF CHECKING MEMBER STABILITY, A REDUCED UNSUPPORTED LENGTH FOR TRAPEZE SUPPORTS MAY HAVE BEEN US'ED BASED ON THE UNJUSTIFIED ASSUMPTION THAT THE LEG 0F THE BASE ANGLE WAS RIGID RELATIVE TO THE SUPPORT. 1918R 1

e TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION B.18-2 HVACLSTRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE NO. B.18: DESIGN OF COMPRESSION MEMBERS (CONT'D) o ISSUE (CONT'D) a i G. THE DESIGN CALCULATIONS FOR BRACES IN COMPRESSION MAY i HAVE CONSIDERED ONLY THE BRACE WITH HIGHEST AXIAL LOAD 0N A MEMBER WHILE NOT CONSIDERING OTHER CASES WHICH. ALTHOUGH HAVING LOWER LOADS, ALSO HAVE REDUCED. CAPACITY DUE TO LONGER MEMBER LENGTHS. o RESOLUTION: A. THE RECOMMENDED MAXIMUM SLENDERNESS RATIOS OF AISC ARE USED IN THE DESIGN VALIDATION OF HVAC DUCT SUPPORTS. B. THE DIAGONAL BRACING 0F THE HVAC SUPPORTS, AND FRAME ACTION OF THE CAPTURING STEEL JUSTIFIES A CLASSIFICATION OF "SIDESWAY PREVENTED" AND IS CONSIDERED IN DESIGN VALIDATION CALCULATIONS. C. THE APPROPRIATE UNSUPPORTED LENGTH OF SUPPORT MEMBERS. INCLUDING THE EFFECTS OF THE OUT-0F-PLANE BRACING 0F THE DUCT, IS USED TO CALCULATE COMPRESSIVE MEMBER SLENDERNESS RATIOS IN DESIGN VALIDATION CALCULATIONS. D. NCIG-01 SPECIFIES VISUAL CRITERIA FOR ACCEPTABLE WELD SIZE. LENGTH AND UNDERCUT DEPTH. WELDS NOT MEETING THE UNDERCUT REQUIREMENTS ARE IDENTIFIED AND l SUBSEQUENTLY DISPOSITIONED. 1 1 1918R

l TU ELECTRIC 9/15/87 C0MANCHE PEAK STEAM ELECTRIC STATION B.18-3 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE NO. B.18: DESIGN OF COMPRESSION MEMBERS (CONT'D) l o RESOLUTION (CONT'D) E. THE'EFFECTOFdVT-OF-PLUMBNESSONHVACSUPPORTSHAS 1 BEEN EVALUATED AND DOCUMENTED. OUT-0F-PLUMBNESS GREATER THAN TWO DEGREES IS INCLUDED IN DESIGN VALIDATION. F. THE APPROPRIATE LENGTHS OF ALL TYPES OF MEMBERS ARE USED IN HVAC DESIGN VALIDATION CALCULATIONS. I G. THE DESIGN ADEQUACY OF BRACING MEMBERS IS EVALUATED USING "AS-BUILT" INFORMATION. 1% I i l l 1918R' 1

TU ELECTRIC 9/15/87 IT COMANCHE PEAK STEAM ELECTRIC STATION B.19 'HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE!NO. 8.19: -VERTICAL AND TRANSVERSE LOADING ON LONGITUDINAL TYPE SUPPORTS i IN y DESIGN CALCULATIONS FOR LONGITUDINAL SUPPORTS MAY HAVE CONSIDERED ONLY LONGITUDINAL LOADS IN THE DESIGN OF FRAME MEMBERS AND ANCHOR BOLTS. RESOLUTION' LONGITUDINAL HVAC SUPPORTS ARE DESIGN VALIDATED FOR THE SIMULTANE0US APPLICATION OF THREE ORTH 0 GONAL DIRECTION SEISMICALLY INDUCED LOADS. i I 1 1918R

TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION B.20 .HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

c ISSUE N0. B.20: SUPPORT FRAME DEAD AND INERTIAL LOADS ISSilE lA. OUT-0F-PLANE INERTIAL. LOADS ON TRANSVERSE SUPPORTS MAY NOT ' ~ HAVE BEEN CONSIDERED IN THE DESIGN CALCULATIONS. B. SUPPORT LOADS DUE TO SUPPORT DEAD WEIGHT MAY HAVE.BEEN -EITHER IGNORED OR, IF CALCULATED, NOT CALCULATED CONSISTENTLY IN THE DESIGN CALCULATIONS. l l R_ESOLUTION A. OUT-0F-PLANE INERTIAL LOADS ON TRANSVERSE HVAC SUPPORTS ARE l CONSIDERED IN THE DESIGN VALIDATION. 1 i B. DESIGN VALIDATION FOR HVAC SYSTEMS INCLUDES DEAD WEIGHT ) LOADING 0F THE SUPPORT. l l I 1 1918R

l -TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION B.21-1 i .1 HVAC STRUCTURAL DESIGN VALIDATION GENERIC-ISSUES

SUMMARY

I d .! ISSUE N0. B.21: DESIGN OF ANGLE BRACES NEGLECTING LOAD ECCENTRICITY 1 l-A. THE DESIGN CALCULATIONS MAY NOT HAVE INCLUDED THE INDUCED BENDING DUE TO--THE EFFECTS OF ECCENTRIC END CONDITIONS ON LONGITUDINAL ANGLE BRACES. DOUBLE ANGLES WITHOUT FILLER PLATES-MAY HAVE BEEN IMPROPERLY CONSIDERED AS COMPOSITE MEMBERS. 1 B. 'THE DESIGN CALCULATIONS MAY NOT HAVE INCLUDED-THE INDUCED BENDING STRESSES DUE TO THE EFFECTS OF ECCENTRIC END j CONDITIONS ON TRANSVERSE ANGLE BRACES. d C. 'SOME DESIGNS FOR SINGLE LONGITUDINAL ANGLE BRACES MAY PROVIDE WELDING ONLY ON ONE LEG 0F AN ANGLE SECTION. THE WELDING MAY-NOT ALWAYS BE PROVIDED ON THE SAME LEG AT EACH END OF THE ANGLE. THIS COULD P0TENTIALLY-RESULT IN FAILURE t DUE TO TWIST BUCKLING. J RESOLUTION i d A. THE EFFECTS OF ECCENTRIC END CONNECTIONS FOR ALL ANGLE BRACES ARE CONSIDERED IN SUPPORT DESIGN VALIDATION. DOUBLE ANGLES ARE DESIGN VALIDATED IN ACCORDANCE WITH AISC ] REQUIREMENTS. j 1918R

1

z..

TU ELECTRIC' 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION B.21-2 HVAC STRUCTURAL.0ESIGN VALIDATION GENERIC ISSUES

SUMMARY

j ISSUE N0. 8.21: (CONT'D) I RESOLUTION (CONT'D) i ~ B. SEE ITEM A ABOVE. IN ADDITION, THE PRINCIPAL AXES SECTION MODULI ARE USED IN CHECKING BRACING MEMBER STRESS INTERACTION RATIOS. C.. EXCEPT FOR LARGE ANGLE SECTIONS WITH'SHORT LENGTHS, FLEXURAL BUCKLING OF ANGLE SECTIONS IS MORE CRITICAL THAN TORSIONAL 8UCKLING. TORSIONAL BUCKLING IS CONSIDERED IN THE DESIGN VALIDATION. f I i s i i l l l l 1918R

c-TV ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION B.22 i HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

] I l ISSUE N0. B.22: DYNAMIC AMPLIFICATION FACTORS (DAF) ISlVE OMISSION OF A DYNAMIC ' AMPLIFICATION FACTOR. AS REQUIRED BY THE CPSES'FSAR. MAY RESULT IN UNCONSERVATIVE CALCULATION OF EQUIVALENT STATIC LOADS USED FOR SUPPORT ANALYSIS AND DESIGN. RESOLUTION A MULTIMODE RESPONSE MULTIPLIER (MRM) 0F 1.5 IS USED IN THE EQUIVALENT STATIC ANALYSIS OF HVAC DUCT AND DUCT SUPPORTS. (EXCEPT WHEN FREQUENCY IS GREATER THAN 33 HZ AND THEN MRM OF 1.0 IS USED.) -i l l-l 1918R

Du b i TU ELECTRIC 9/15/87 1 COMANCHE PEAK STEAM ELECTRIC STATION B.23 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

1 ISSUE NO. B.23: REDUCTION IN MEMBER SECTION PROPERTIES DUE TO BOLT HOLES. IESE THE SUPPORT DESIGN MAY NOT HAVE ADDRESSED UNUSED BOLT HOLES OR AISC REQUIREMENTS TO REDUCE SECTION PROPERTIES WHEN USED BOLT HOLE AREA EXCEEDED SPECIFIED MAXIMUM. THIS CAN RESULT IN AN UNCONSERVATIVE CALCULATION OF STRESSES AT SOME CROSS-SECTIONS CONTAINING BOLT HOLES. 5 RESOLUTION THE REDUCTION IN BEAM SECTION PROPERTIES DUE TO USED AND UNUSED BOLT HOLES IS CONSIDERED IN THE HVAC DESIGN VALIDATION IN ACCORDANCE WITH AISC REQUIREMENTS. i i 1 l l 1918R l

) -1 t TV ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION B.24-1 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE N0. B.24:

SYSTEM CONCEPT O M f CYGNAIDENTIFIEDCdNCERNSWITHTHEORIGINALCABLETRAY' f SUPPORT DESIGNS. THEY MAY BE APPLICABLE TO THE HVAC PROGRAM.- A. LOAD TRANSFER ASSUMPTIONS MAY NOT HAVE INCLUDED THE PRESENCE OF GAPS. POSSIBLY LEADING TO UNCONSERVATIVE j LOAD ASSUMPTIONS. B. EFFECTIVENESS OF THE DUCT AS LATERAL SUPPORT FOR THE HANGERS. l C. LONGITUDINAL SUPPORTS MAY NOT HAVE BEEN DESIGNED FOR I LOADS-IN OTHER THAN THE LONGITUDINAL DIRECTION. j D. PRYING'DUE TO ROTATION OF THE BASE PLATE MAY BE l MINIMIZED BY PROVIDING CONNECTIVITY BETWEEN THE HANGER AND THE DUCT. I 1 E. OUT-0F-PLANE INERTIAL LOADS FROM TRANSVERSE HANGER WEIGHT MAY NOT HAVE.BEEN CONSIDERED IN DESIGN OF LONGITUDINAL SUPPORTS.- F. MEMBER ECCENTRICITIES MAY NOT HAVE BEEN CONSIDERED. l i l 1918R l 1 L _ =_ _ __- -

TV ELECTRIC 9/15/87 4 4 4 COMANCHE PEAK STEAM ELECTRTC STATION B.24-2 .HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

i ISSUE NO.-B.241. SYSTEM CONCEPT (CONT'D) 'O RESOLUTION A. DESIGN VALIDATI'ON PROCEDURES CONSERVATIVELY CONSIDER THE LOCAL COMPATIBILITY AND GLOBAL DISTRIBUTION OF LOADS THROUGH THE HVAC SYSTEM. B. TRANSVERSE SUPPORTS WILL BE POSITIVELY CONNECTED TO THE DUCT BY EXISTING. BOLTS OR WELDS OR BY SHIMMING TO ZER0 4 W INCHES CLEAR AT THE FOUR CORNERS. 'C. TRANSVERSE, VERTICAL AND LONGITUDINAL LOADS ARE CONSIDERED IN THE DESIGN VALIDATION OF LONGITUDINAL SUPPORTS. D. SEE RESOLUTION TO ISSUES B.24.A AND B.24.8 E. OUT-0F-PLANE INERTIAL LOADS FROM TRANSVERSE HANGERS'ARE CONSIDERED IN THE DESIGN VALIDATION OF LONGITUDINAL SUPPORTS. l F. THE EFFECT OF ECCENTRICITIES ARE CONSIDERED IN SJPPORT DESIGN VALIDATION. i .1918R \\

I sis ~ TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION B.26 ! HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

u ISSUE NO. B.26: WORKING POINT DEVIATION STUDY y o. ISEE .CYGNA RAISED THE FULLSfING QUESTIONS ON THE ORIGINAL CABLE TRAY PROGRAM WORKING POINT DEVIATION STUDY. THESE QUESTIONS MAY BE APPLICABLE TO THE HVAC PROGRAM. A. THE STUDY DID NOT INCORPORATE THE EFFECTS OF ALL DESIGN -CHANGE NOTICES FOR INDIVIDUAL SUPPORTS. B. THE STUDY DID NOT CONSIDER THE EFFECTS OF VERTICAL AND TRANSVERSE LOADS ON LONGITUDINAL SUPPORTS. C. THE STUDY DID NOT EVALUATE THE ADEQUACY OF CONNECTIONS. BASE ANGLES AND ANCHOR BOLTS FOR LONGITUDINAL SUPPORTS. D. THE STUDY WAS BASED ON QUESTIONABLE MODELING ASSUMPTIONS. E. THE STUDY DID NOT CHECK THE ADEQUACY OF ALL SUPPORT COMP 0NENTS. F. THE STUDY DID NOT CONSIDER THE OFFSETS OF TWO-BOLT BRACE CONNECTIONS WHICH MAY INTRODUCE ADDITIONAL LOADS. I L 1918R

i 4 TU ELECTRIC 9/15/87 ~ CDMANCHE PEAK STEAM ELECTRIC STATION B.26-2 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE NO.'B.26: WORKING P0 INT DEVIATION STUDY. O ISSE (CONT'D) G. THE STUDY SPECIFIED ALLOWABLE DEVIATIONS WITHOUT i SUPPORTING CALCULATIONS. l H. I. THE STUDY QUALIFIED CERTAIN SUPPORTS BY SIMILARITY TO SUPPORTS WHICH WERE LATER FOUND TO BE OVERSTRESSED. J.- THE STUDY DID NOT PROPERLY CONSIDER THE EFFECT OF MULTIPLE. DISCRETE AXIAL LOADS IN THE BUCKLING CAPACITY OF SUPPORTS FOR EACH LOAD CASE. O RESOLUTION A. "AS-BUILT" INFORMATION IS USED FOR DESIGN VALIDATION. B. LONGITUDINAL SUPPORTS ARE DESIGN VALIDATED FOR I VERTICAL. TRANSVERSE AND LONGITUDINAL LOADS. C. ALL MEMBERS. CONNECTIONS BASE ANGLES AND ANCHOR BOLTS ARE DESIGN VALIDATED FOR ADEQUACY. l l [ l l 1918R

w TU ELECTRIC 9/15/87 7, COMANCHE PEAK STEAM ELECTRIC STATION B.26-3 ~ HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

.i ISSUE N0. B.26: WORKING POINT DEVIATION STUDY o RESOLUTION (CONT'D) D. ALL GIBBS & HIL~L QUESTIONABLE MODELING ASSUMPTIONS HAVE j 7 'BEEN INDIVIDUALLY ADDRESSED IN SAG.CP214. t E. ALL-MEMBERS. CONNECTIONS, BASE ANGLES, AND ANCHOR BOLTS ARE INDIVIDUALLY DESIGN VALIDATED FOR ADEQUACY. F. "AS-BUILT" SUPPORT CONFIGURATIONS AND END CONDITION j DETAILS ARE USED FOR SUPPORT DESIGN VALIDATION. l G. SEE F AB0VE. H&I. EACH HVAC SUPPORT IS INDIVIDUALLY DESIGN VALIDATED AND SIMILARITY.IS NOT USED. j J. THE EFFECT OF MULTIPLE, DESCRETE AXIAL LOADS ON BUCKLING CAPACITY OF SUPPORT MEMBERS IS EVALUATED IN THE DESIGN VALIDATION FOR EACH LOADING. I 1 1918R q I

n t TU ELECTRIC 9/15/87 COMANCHE.P_EAK STEAM ELECTRIC STATION B.27 HVAC STRUCTURAL' DESIGN VALIDATION GENERIC ISSUES

SUMMARY

. ISSUE NO. B.27: REDUCED SPECTRAL ACCELERATIONS O IS.S.dE ~ ORIGINAL GENERIC STUDIES FOR THE CABLE TRAY SUPPORT DESIGN 4 WERE PERFORMED TO JUSTIFY REDUCED SPECTRAL ACCELERATIONS WITHOUT PROPER CONSIDERATION OF THE FOLLOWING: -l A. VARIATION OF SUPPORT TYPE, TRAY SPAN, AND TRAY WEIGHT. B. EFFECTS OF TRAY AXIAL. FREQUENCY AND TRAY TO SUPPORT i ECCENTRICITY. C. ANCHORAGE B0UNDARY CONDITIONS. .SIMILAR ISSUE MAY EXIST FOR HVAC PROGRAM. o RESOLUTION A. "ASiBUILT" CONDITIONS ARE USED FOR THE DESIGN VALIDATION OF HVAC SUPPORTS. B. AXIAL DUCT FREQUENCY AND DUCT TO SUPPORT MEMBER ECCENTRICITIES ARE CONSIDERED IN THE DESIGN VALIDATION. C. BASE ANGLES AND ANCHOR BOLT STIFFNESSES INCLUDING THE EFFECTS OF BASE ANGLE SIZE, ANCHOR BOLT SIZE AND GAGE DISTANCE ARE USED IN THE ANALYTICAL MODELS. l. 1918R-l- 4

-o: i TU ELECTRIC 9/15/87 ' COMANCHE PEAK STEAM ELECTRIC STATION B.28-1 1 h 4 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

,g. l .-ISSUE NO. B.28: NONCONFORMANCE WITH AISC SPECIFICATIONS o-ISSUE j .c i GIBBS-AND HILL DID'NOT PROPERLY' CONSIDER'THE REQUIREMENTS 0F THE AISC MANUAL OF STEEL CONSTRUCTION, 7TH EDITION IN i THE DESIGN OF CABLE TRAY SUPPORTS. SIMILAR ISSUE MAY EXIST-FOR THE HVAC PROGRAM. SPECIFIC AREAS OF DEFICIENCY ARE: A. UNBRACED LENGTH FOR BUCKLING j B. UNBRACED LENGTH FOR LATERAL BUCKLING 0F COMPRESSION FLANGE (AISC EQ. 1.5-7) q C. BOLT HOLES IN MEMBER FLANGES n i D. LACING OF DOUBLE ANGLES E. ECCENTRIC CONNECTIONS -l F. OVERSIZED BOLT HOLES G. USE OF ALLOWABLE COMPRESSIVE STRESS FOR SECONDARY MEMBERS o RESOLUTION A. SEE ISSUE B.18-A. l I i i L l' I 1918R c +

TU. ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION B.28-2 r HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

i ?s ISSUE NO B.28: NONCONFORMANCE WITH AISC SPECIFICATIONS (CONT'D) i o RESOLUTION (CONT'D) l-B. AISC E0. 1.5-77IS APPLICABLE TO CHANNELS. WHERE-CHANNELS ARE USED IN HVAC SUPPORTS. THIS EQUATION IS CONSIDERED. C.. BOLT HOLES IN MEMBER FLANGES ARE CONSIDERED IN HVAC DESIGN VALIDATION. D. NOT APPLICABLE TO HVAC SINCE NO DOUBLE ANGLES ARE USED. E. ECCENTRICITIES ARE CONSIDERED IN THE DESIGN VALIDATION. F. EFFECTS OF OVERSIZED BOLT H0LES ARE CONSIDERED IN THE 1 SUPPORT DESIGN-VALIDATION WHEN APPLICABLE. G. SUPPORT MEMBERS ARE EVALUATED AS PRIMARY MEMBERS IN ACCORDANCE WITH AISC SPECIFICATION. I 1 l l 1918R j A

TU ELECTRIC 9/15/87 a COMANCHE PEAK STEAM ELECTRIC STATION B.29 HVAC STRUCTURAL DESIGN VALIDATION-GENERIC ISSUES

SUMMARY

ISSUE N0. B.29: MEMBER SUBSTITUTION 0 ISElE ']g GIBBS AND HILL PROCEDURES CONCERNING'THE SUBSTITUTION OF i MEMBERS DURING CONSTRUCTION MAY HAVE LEAD TO THE ^ INSTALLATION OF STRUCTURAL MEMBERS WITH WEAKER SECTION PROPERTIES. O RESOLUTION DESIGN VALIDATION OF HVAC DUCT AND DUCT SUPPORTS IS. PERFORMED WITH AS-BUILT MEMBER SIZE. f 1918R i

x (^^ TU ELECTRIC -9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION B.30 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE N0. B.30: WELD DESIGN ~AND SPECIFICATIONS. O ISSE CYGNA HAS NOTED THE FOLLOWING DISCREPANCIES IN WELD DESIGNS FOR CABLE TRAY SUPPORTS. SIMILAR ISSUE MAY EXIST FOR HVAC. A. WELD DETAILS MISSING FROM DESIGN DRAWINGS. B. WELD SIZES DIFFER BETWEEN DESIGN DRAWING AND ASSEMBLY DRAWING. C. ECCENTRICITIES WERE NOT CONSIDERED IN WELD DESIGN CALCULATIONS. D. WELD DESIGNS DID NOT CONSIDER THE THICKNESS OF THE j CONNECTED PARTS. E. INCORRECT WELD LENGTH ASSUMED BY GI8BS AND~ HILL FOR BEAMI HANGER BASE ANGLE CONNECTION CALCULATIONS. o RESOLUTION A. AS-BUILT WELD DETAILS WILL BE.USED FOR DESIGN i 4 VALIDATION OF HVAC DUCT SUPPORT CALCULATIONS. B. SAME AS A AB0VE. C. HVAC DESIGN VALIDATION PROCEDURES SPECIFY USE OF ECCENTRICITIES IN WELD DESIGN VERIFICATION CALCULATIONS. D. WELD DESIGN VALIDATION IS PERFORMED IN ACCORDANCE WITH AISC 7TH EDITION. EXCEPT MINIMUM WELD SIZE CRITERIA WHICH IS WAIVED AFTER STRESSES ARE DETERMINED TO BE q WITHIN ALLOWABLE. E. SAME AS A ABOVE. i l 1918R

.TU ELECTRIC' 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION B.29 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE NO. B.29: MEMBER SUBSTITUTION o ISSME GIBBS AND HILL PROCEDURES CONCERNING THE SUBSTITUTION OF MEMBERS DURING. CONSTRUCTION'MAY HAVE LEAD TO THE INSTALLATION OF STRUCTURAL MEMBERS WITH WEAKER SECTION PROPERTIES. O RESOLUTION DESIGN VALIDATION OF HVAC DUCT AND DUCT SUPPORTS IS PERFORMED WITH AS-BUILT MEMBER SIZE. l l-1918R

TU ELECTRIC 9/15/87 ~' COMANCHE PEAK STEAM ELECTRIC STATION B.30 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE NO. B.30: WELD DESIGN AND SPECIFICATIONS 1 o IS_SHE CYGNA HAS NOTED THE FOLLOWING DISCREPANCIES IN WELD DESIGNS i FOR CABLE TRAY SUPPORTS. SIMILAR ISSUE MAY EXIST FOR HVAC. A. WELD DETAILS MISSING FROM DESIGN DRAWINGS. B. WELD SIZES DIFFER BETWEEN DESIGN DRAWING AND ASSEMBLY DRAWING. C. ECCENTRICITIES WERE NOT CONSIDERE0 IN WELD DESIGN CALCULATIONS. D. WELD DESIGNS DID NOT CONSIDER THE THICKNESS OF THE h CONNECTED PARTS. E. INCORRECT WELD LENGTH ASSUMED BY GIBBS AND HILL FOR BEAM / HANGER BASE ANGLE CONNECTION CALCULATIONS. o RESOLUTION A. AS-BUILT WELD DETAILS WILL BE USED FOR DESIGN VALIDATION OF HVAC DUCT SUPPORT CALCULATIONS. B. SAME AS A AB0VE. C. HVAC DESIGN VALIDATION PROCEDURES SPECIFY USE OF ECCENTRICITIES IN WELD DESIGN VERIFICATION CALCULATIONS. D. WELD DESIGN VALIDATION IS PERFORMED IN ACCORDANCE WITH AISC 7TH EDITION. EXCEPT MINIMUM WELD SIZE CRITERIA 1 WHICH IS WAIVED AFTER STRESSES ARE DETERMINED TO BE WITHIN ALLOWABLE. E. SAME AS A AB0VE. I 1918R

J TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION B.31-1 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE N0. B.31: EMBEDDED PLATE DESIGN l 0 ISSllE CYGNA-RAISED THE F'OLLOWING CONCERNS ON THE ORIGINAL ) EMBEDDED PLATE DESIGN: A. EFFECT OF PRYING ACTION ON TENSION IN NELSON STUDS MAY NOT HAVE BEEN CONSIDERED. l B. , PIPE SUPPORT DESIGNERS AND CABLE TRAY DESIGNERS USED INCONSISTENT DESIGN PRACTICES ON STIFFENING OF MOMENT ATTACHMENTS TO EMBEDDED PLATES. C. DESIGN CALCULATIONS FOR SUPPORTS ATTACHED TO EMBEDDED PLATES DID NOT CONSIDER CAPACITY REDUCTION GIVEN IN DESIGN. SPECIFICATIONS FOR SPECIFIC LOCATIONS. D. INSPECTION PROCEDURE FOR SUPPORT DID NOT REQUIRE A CHECK 0F ATTACHMENT SEPARATION. E. SOME SUPPORT ANCHORAGE DETAILS MAY RESIST LOADS FROM LARGER TRIBUTARY TRAY SPANS THAN WERE ASSUMED IN DESIGN CALCULATIONS. F. DESIGN SPECIFICATION DID NOT ADDRESS MINIMUM SPACING FOR HILTI EXPANSION ANCHORS INSTALLED ON CONCRETE SURFACE PERPENDICULAR TO EMBEDDED PLATE. 1 1918R p = __ _ _ __- ---

TU ELECTRIC-9/15/87 . COMANCHE PEAK STEAM ELECTRIC STATION B.31-2 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

. ISSUE N0. B.31: EMBEDDED PLATE DESIGN o RESOLUTION 1 'A.C. ATTACHMENT LOADS ON EMBEDDED PLATES FROM HVAC SUPPORTS ARE FURNISHED TO SWEC FOR EMBEDDED' PLATE EVALUATION. B. THIS-IS NOT AN ISSUE. STIFFENING WILL BE PROVIDED WHEN REQUIRED FOR LOAD' TRANSFER OR STRESS REDUCTION. D.F. THE EMBEODED PLATE DESIGN VALIDATION APPROACH IS ' INCLUDED IN THE SWEC CIVIL / STRUCTURAL CORRECTIVE ACTION PROGRAM. E. "AS-BUILT" DUCT SPANS ARE USED FOR SUPPORT DESIGN VALIDATION AND FOR DETERMINATION 0F EMBEDDED PLATE ' LOADS. 1 1 1918R

TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION B.32 l l HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

i ., ISSUE NO. B.32: SYSTEM TO SUPPORT CONNECTIONS i o-ISSUE BASED ON CONCERNS ABOUT CABLE. TRAY CLAMPS. THE BEHAVIOR OF ~ THE CONNECTIONS'BETWEEN DUCTS AND THE SUPPORTING MEMBERS MAY'NOT BE C'ORRECTLY CONSIDERED. j i o RESOLUTION 9 - I LONGITUDINALANDSOMETRANSVER.SESUPPORTSAREPOSITIVELY ATTACHED T0'THE DUCT BY WELDING OR BOLTING. TRANSVERSE SUPPORTS WITH GAPS BETWEEN THE DUCT AND THE SUPPORT WILL BE SHIMMED TO ZERO CLEARANCE. MODELING PROCEDURES FOR ALL CASES HAVE BEEN DEVELOPED AND ARE INCLUDED IN THE DESIGN VALIDATION PROCEDURES. .i I i I l L _ __ _

f: x. TV ELECTRIC 9/15/87-I COMANCHE PEAK STEAM ELECTRIC STATION B.33 HVACSTRUCTURAL$0ESIGNVALIDATIONGENERICISSUES

SUMMARY

j .t o -ISSUE NO. B.33: FSAR: LOAD COMBINATIONS o ISSUE i LOCA AND THERMAL LOADS MAY NOT HAVE BEEN INCLUDED IN CABLE-TRAY SUPPORT DESIGN. i o RESOLUTION 0-LOCA PIPE WHIP AND JET IMPINGEMENT ARE ADDRESSED BY i CPSES SYSTEMS INTERACTION GROUP. LOCAPRESSURE'I$ADDRESSEDBYISSUEB.11. o o THERMAL LOADS ARE SECONDARY AND SELF-LIMITING AND MAY BE NEGLECTED. I l l I, 1918R' "-m

i TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION 8.34 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE NO. B,34: DIFFERENCES BETWEEN INSTALLATION AND DESIGN / CONSTRUCTION DRAWING WITHOUT APPROPRIATE DOCUMENTATION ~ O! ISSUE DISCREPANCIES MAY EXIST BETWEEN "AS-BUILT" AND "AS-DESIGNED" SUPPORT CONFIGURATIONS. O RESOLUTION "AS-BUILT" CONFIGURATIONS WILL BE USED FOR THE DESIGN VALIDATION. I 1918R j h--_..-__n._.m___

1 n; 6 9 '/, k 7 g -TU ELECTRIC 9/1518/ ( COMANCHE PEAK STEAM ELECTRIC STATION B.35-1= + = a So HVAC STRUCTURAL' DESIGN VALIDATION GENERIC ISSUES

SUMMARY

q 1 3 ' ISSUE N0. B.35: DESIGN CONTROL '/ ) n, o ISSUE i 1 4 ,j q PROPER $EVIEWKND'DOCUMENTATIONOFDkSIGNCHANGESMAY A. N0fHAkE,BEsNPROVIDED. -( 3 [3 .B. INSULATION WEIGHT MAY NOT HAVE BEEN CONSIDERED. 't i C. SUPPCRT DESIGN < CALCULATIONS ARF. NOT COMPLETE. D. DIFFERENCESMAY'EXIS7/BETWEENDESIGNANDINSTALLATION DRAWINGS. / 1 E. DESIGNb1TERIAUSED'BYSUPPORTDESIGNERSN0JPROPERLY ff' CONTROLLEO. A k o RESOLUTION 3 ) ?,, A. & D. ALLACCESSABLEPORTIONSOFSUPPORTSAREDdSlGN VALIDATED BASED ON "AS-BUILT" INFORMATION. a INACCESSIBLE P0RTIONS'ARE PROPERLY CON 5IDERED. 1, 4 j l B. ALL COMPONENT WEIGHTS, INCLUDING INSULATION. ARE. I INCLUDED IN DESIGN VALIDATION CALCULATIONS. C. DESIGN VALIDATION CALCULATIONS ARE PREPARED IN 1 ACCORDANCE WITH DESIGN CRITERIA AND GENERAL j j INSTRUCTIONS TO ENSURE COMPLETENESS. OUTSTANDING ITEM / LIST IS USED TO TRACK OUTSTANDING ITEMS. / ) ( ! 1918R 4 i 'e } f / .I - 'h

jg,7 @ vig, 43~ 1 TU ELECTRIC 9/15187 g . COMANCHE PEAK STEAM ELECTRIC STATION B.35-2 j] HVAC STRUCTURAL DESIGN VALIDATION' GENERIC ISSUES

SUMMARY

ISSUE N0. B.35: DESIGN CONTROL (CONT'D) o RESOLUTION'(CONT'D) E. DESIGN CRITERIA ARE CONTROLLED BY USE OF PROPER. PROCEDURES. -l [ f'.f-y n I. 9 ,.:1 e g: s fY 'b Q y,a l y i..s : ,h. $:r i d: ). i p l J L 1918R ..c

g, :. : TV ELECTRIC. 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION-B.37 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

l ISSUE NO. B.37: LOADING IN STRESS MODEL ) 0 ISSME i CYGNA RAISED THE FdLLOWING QUESTIONS ON CTH DESIGN THAT MAY ] 1 BE APPLICABLE TO HVAC PROGRAM: A. APPLICATION OF TRAY LOADS DOES NOT REFLECT ACTUAL TRAY ' LOCATIONS. a .I B. THE DESIGN LOADS DO NOT CONSIDER TRAY SPAN TOLERANCES PERMITTED BY THE DESIGN DRAWINGS. l C. FRAME HEIGHTS DO NOT REFLECT DISTANCE T0.THE TIER i CENTROIDAL AXES. O RESOLUTION i ' DESIGN VALIDATION CALCULATIONS ARE PERFORMED USING "AS-BUILT" INFORMATION. l .1 A. DUCT LOADS ARE APPLIED TO HVAC SUPPORTS IN A MANNER I CONSISTENT WITH "AS-BUILT" CONNECTION DETAILS. B. "AS-BUILT" DUCT SPAN LENGTHS ARE USED IN THE DESIGN VALIDATION. 4 C. DESIGN VALIDATION MODELS USE CENTROIDAL AXES TO DEFINE SPATIAL RELATIONSHIPS BETWEEN SUPPORT MEMBERS. i 1918R o___ i

TU ELECTRIC '9/15/87 . COMANCHE PEAK STEAM ELECTRIC STATION B.38-1 .HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE NO. B.38:

DESIGN OF FLEXURAL MEMBERS o ISSUE CYGNA HAS NOTED THE FOLLOWING CONCERNS REGARDING THE ORIGINAL DESIGN OF CABLE TRAY SUPPORT FLEXURAL MEMBERS THAT MAY. APPLY TO THE HVAC PROGRAM. A.B.C.D M0MENTS (BENDING AND TORSION) INDUCED BY ECCENTRICITIES TO TIER CENTROIDAL AXES HAVE NOT BEEN CONSIDERED. E. REDUCTION IN BEAM SECTION PROPERTIES DUE TO BOLT HOLES AND WELD UNDERCUTS ARE: INCONSISTENTLY CONSIDERED. F '. DESIGN CALCULATIONS DO NOT CONSIDER' SHEAR' STRESS DUE T0- ' DIRECT SHEAR. ST. VENANT TORSIONAL SHEAR OR THE COMBINATION OF THE TWO G. AISC EQ. 1.5-7 HAS NOT BEEN CONSIDERED. O RESOLUTION A.B.C.D M0MENTS DUE TO DUCT AND SUPPORT MEMBER ECCENTRICITIES HAVE BEEN APPROPRIATELY CONSIDERED IN DESIGN VALIDATION. i E. THE REDUCTION IN MEMBER SECTION PROPERTIES DUE TO BOLT HOLES IS CONSIDERED IN DESIGN VALIDATION. WELD UNDERCUTS NOT MEETING VISUAL WELD ACCEPTANCE CRITERIA ARE IDENTIFIED AND DISPOSITIONED. ( 1918R l

c, TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION B.38-2 ( l HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

I ISSUE N0. B.38: DESIGN OF FLEXURAL MEMBERS RESOLUTION (CONT'D) t F. ' SHEAR STRESSES TUE TO DIRECT SHEAR, ST. VENANT TORSIONAL SHEAR, AND THE COMBINATION OF THE TWO ARE INCLUDED IN SUPPORT DESIGN VALIDATION. G. AISC-EQUATION 1.5-7 IS APPLICABLE TO CHANNELS AND 18 FOLLOWED WHEN CHANNELS ARE USED. SINCE HVAC SUPPORTS PRIMARILY USE-STRUCTURAL ANGLES, SECTION 1.5.1.4.6B 0F l THE AISC SPECIFICATION IS APPLICABLE. \\ t l L I l 1918R L L i

i TU ELECTRIC 9/15/87 COMANCHE-PEAK STEAM ELECTRIC STATION B.39-1 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE N0. B.39: SYSTEM STRUCTURAL QUALIFICATION 0 ISSijE CYGNA HAS NOTED THE FOLLOWING. CONCERNS WITH THE ORIGINAL CABLE TRAY QUALIFICATION THAT MAY BE APPLICABLE TO THE HVAC f PROGRAM: 1 I A. DYNAMIC AMPLIFICATION FACTOR (DAF) WAS NOT USED. j I B. THE INTERACTION EQUATION WAS IMPROPERLY BASED ON TOTAL l LOAD FOR SPANS GREATER THAN 8 FEET. l C. SEVERAL INSTANCES OF. MODIFICATIONS TO VENDOR SUPPLIED j HARDWARE FOR CABLE TRAYS WERE FOUND WITHOUT ADEQUATE l JUSTIFICATION'OR DOCUMENTATION. D. CABLE TRAY M0 MENT OF INERTIA CALCULATIONS DID NOT CONSIDER SHEAR DEFORMATION UNDER TRANSVERSE LOADING. o RESOLUTION j A. DESIGN VALIDATION PROCEDURES SPECIFY THE FOLLOWING MULTIMODE RESPONSE MULTPLIERS (MRM). FUNDAMENTAL FREQUENCY tEtt ) h 33 1.0 j < 33 1.5 ] l l 1918R l l L-1

yy y a n ;... TU ELECTRIC 9/15/87. COMANCHE-PEAK' STEAM ELECTRIC STATIONB.39 L HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES SU l',, ISSUE NO.-8.39: SYSTEM STRUCTURAL QUALIFICATION 0 RESOLUTION:(CONT'D) )^ B. THE HVAC~ DUCT DESIGN VALIDATION'IS BASED ON "AS-8UI SPANS AND PROPERLY CONSIDERS LOAD CAPACITIES. C.. SAFETY =RELATED HVAC DUCTS WILL BE QC INSPECTED ANY MODIFICATION OR REWORK. AS-BUILT CONFIGURATION IS DESIGN' VALIDATED.- D; DUCT SPAN MODELING CONSIDERS SHEAR FLEXIBILITY TEST.C0RRELATION. i i a f .1918R'

}J .TV ELECTRIC -9/15187. COMANCHE PEAK STEAM ELECTRIC STATION B.,40-1 'HVAC STRUCTURAL. DESIGN VALIDATION GENERIC' ISSUES

SUMMARY

ISSUE N0.-B A0: BASE ANGLE DESIGN o-ISSDE e .}. CYGNA RAISED THE FOLLOWING CONCERNS REGARDING CTH ORIGINAL BASE ANGLE DESIGN THAT.MAY BE' APPLICABLE T0.THE HVAC PROGRAM: A. . BASE ANGLES WERE MODELED AS SIMPLY SUPPORTED BEAMS, IGNORING THE STIFFENING EFFECTS OF CONCRETE BEARING AT- .THE ANGLE ENDS.. B.- PRINCIPAL' AXES WERE NOT CONSIDERED'IN.THE ANALYSIS OF.. BASE ANGLES. C. BASE ANGLE LENGTHS CONSIDERED IN THE " WORKING POINT. DEVIATION STUDY" DID NOT REFLECT THE MOST CRITICAL SPACING'0F RICHMOND INSERTS. D. NOT ALL BASE ANGLES WERE EVALUATED FOR' STANDARD (GENERIC) SUPPORT TYPES. t 0-RESOLUTION-A. THE STIFFENING EFFECTS OF CONCRETE BEARING AT THE BASE ANGLE ENDS ARE CONSIDERED IN THE DESIGN VALIDATION OF l THE HVAC SUPPORT. 1 I l 1918R i A U----'-_-__-----_-___-.

TU ELECTRIC 9/15/87 COMANCHE PEAK. STEAM ELECTRIC STATION B.40-2 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

l i ISSUE NO. B.40: BASE ANGLE DESIGN o RESOLUTION (CONT'D) 8. DESIGN VALIDATION OF HVAC SUPPORTS CONSIDERS THE PRINCIPAL AXES IN~THE ANALYSES OF BASE ANGLES. C. THE DESIGN VALIDATION OF BASE ANGLES FOR HVAC SUPPORTS f IS 8ASED UPON "AS-BUILT" DIMENSIONS. D. ALL BASE ANGLES FOR HVAC SUPPORTS ARE DESIGN VALIDATED. l 2 l l. L -1918R

TV ELECTRIC-9/15/87 j ' COMANCHE PEAK STEAM ELECTRIC-STATION B.41 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

' ISSUE N0. B.41: SUPPORT QUALIFICATION BY SIMILARITY 0 ISSUE l 1 y { GIBBS AND HILL QUACIFIED SEVERAL CTH SUPPORTS BY' SIMILARITY l t TO OTHER SUPPORTS EVEN THOUGH THE SIMILARITY WAS NOT' OBVIOUS. SIMILAR ISSUE MAY EXIST FOR HVAC, t o RESOLUTION { THE PRESENT HVAC PROGRAM PROVIDES FOR ANALYSIS AND QUALIFICATION OF EACH HVAC DUCT SUPPORT. THIS ISSUE IS NOL LONGER APPLICABLE TO THE HVAC PROGRAM. 1 t1 l j l i l 1918R 4

w TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION B.42 EO -HVAC STRUCTURALcDESIGN VALIDATION GENERIC ISSUES

SUMMARY

I ISSUE N0..B.42: CRITICAL' SUPPORT CONFIGURATION AND LOADINGS 0: ISSUE 'l THIS ISSUE-0RIGINATED IN THE CTH PROGRAM AND MAY BE-APPLICABLE TO THE HVAC PROGRAM. .A. ASPECT RATIOS USED IN CALCULATIONS FOR STANDARD (GENERIC) TRAPEZE SUPPORTS-MAY NOT REPRESENT-CRITICAL CONFIGURATIONS. B. ASYMMETRIC TRAY LOADS WERE NOT CONSIDERED FOR TRAPEZE SUPPORTS. o RESOLUTION A.lR EACH HVAC SUPPORT IS DESIGN VALIDATED BASED ON "AS-8UILT" CONFIGURATION. ~ 4 1 1 l L f 1 1 1918R-

TU ELECTRIC 9/15/87 I COMANCHE PEAK STEAM ELECTRIC STATION B.43 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE No. 8.43: CUMULATIVE EFFECT OF REVIEW ~ ISSUES 2 }t SMALL UNCONSERVATISMS RESULTING FROM SEPARATE ISSUES MAY HAVE SIGNIFICANT CUMULATIVE EFFECT FOR SUPPORTS IMPACTED BY MORE THAN ONE ISSUE. 1 0 ' RESOLUTION THE OVERALL DESIGN VALIDATION APPROACH HAS ADDRESSED EACH ISSUE BOTH INDIVIDUALLY AND COLLECTIVELY.. DESIGN' VALIDATION IS BASED ON "AS-BUILT" DATA. "AS-BUILT" DOCUMENTATION (DRAWINGS. CALCULATIONS. ETC) WILL BE GENERATED FOR THE SUPPORTS. d i I I 1918R q ___-_-_-_--___a

r-TU ELECTRIC '9/15/87 a- 'l l ' COMANCHE PEAK STEAM ELECTRIC' STATION B.44 ~ L HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE!N0. B.44: SYSTEM DAMPING VALUES 0 ISSUE I CASE HAS QUESTIONED' THE VALIDITY OF 41 AND '71 DAMPING.USED FOR THE OBE AND SSE. SEISMIC EVALUATION OF CABLE TRAY 1 .SUPP0RTS. l 0-RESOLUTION i HVAC' DESIGN. VALIDATION UTILIZES 21.AND 41 DAMPING FOR OBE-AND SSE SEISMIC EVALUATION RESPECTIVELY PER NRC REGULATORY l GUIDE 1.61. THIS ISSUE IS NOT RELEVANT TO THE HVAC PROGRAM. 9 l l i i i '1918R 1

e; a TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION B.45 L HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

ISSUE NO. B.45: MODELING OF BOUNDARY CONDITIONS O ISSUE I CASE HAS QUESTIONED THE MODELING TECHNIQUE OF BOLTED HANGER ANCHORAGES. O RESOLUTION SPRING RATES AND ALLOWABLE LOADS FOR ANCHORAGE ASSEM8 LIES-ARE DETERMINED CONSIDERING: BASE ANGLE SIZE ANCHOR BOLT SIZE GAGE DISTANCE q THE SPRING RATES ARE INCLUDED IN THE STRUCTURAL MODEL. i 1 1 l l l l l l i 1918R 1

t) i TV ELECTRIC 9/15187 l COMANCHE PEAK STEAM ELECTRIC STATION HVAC' STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

INDEX (A) EXTERNALLY GENERATED ISSUES (B). INTERNALLY GENERATED ISSUES f REFERENCES l 4 i 1918R 1

.h' ,M ; LTU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION' PAGE 1 0F 7 m HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

INDEX APPENDIX-A AEXTERNALLY GENERATED ISSUES ~ -j I ~IS UE NO. ISSUE TITLE A.i CONCRETE V0 IDS A.2 ' GAPS BETWEEN DUCT AND DUCT SUPPORT A.3 ATTACHMENT OF TRANSVERSE SUPPORTS TO DUCTS 1 i A.4 INTEGRITY'0F DUCT JOINTS I A.5-EFFECTS OF OPENINGS IN DUCTS

A.6 NONLINEAR RESPONSE 0F FIRE DAMPER SLEEVE l

LA.7 BUCKLING OF CANTILEVER LEG 0F BASE-ANGLE I A.8 ANCHOR BOLT PERPENDICULARITY REQUIREMENTS A.9 DETERMINATION OF: HEAT LOADS FOR EQUIPMENT -l SIZING (BY HVAC SYSTEMS) -A.10-MISSING GASKET SECTIONS. MISSING-80LTS, LOOSE BOLTS, LAND MISSING PRESSURE LEAK TEST: DOCUMENTATION q A.11~ LOOSE-GRAVITY 0AMPER COUNTERWEIGHTS AND-COUNTERBALANCE ARMS A.12 NON-ATTACHMENT OF THE DUCT-T0 THE SUPPORT AS SHOWN ON THE SUPPORT, DETAIL DRAWING A.13 INADEQUATE WELD FIT-UP. INSPECTION DOCUMENTATION l 1 A.14-RICHMOND INSERTS WITH LESS THAN MINIMUM REQUIRED THREAD ENGAGEMENT AND PRETENSIONING 0F RICHMOND l INSERTS BY TURN-OF-THE-NUT METHOD L i l i l l918R l o

m3 .? p. ' t, }.u,, .5 . r, t-TU ELECTRIC' 9/15/87 L -COMANCHE PEAK STEAM ELECTRIC-STATION .PAGE 2 0F17 m L HVAC.: STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

n. INDEX APPENDIX-A 4 i EXTERNALLY GENERATED ISSUES I m ISSUE'N0c ISSUE' TITLE l A.15 NO DOCUMENTATION OF. INSPECTION BY HVAC OUCT CONTRACTOR ON MATERIAL RECEIVED FROM THE PRIMARY CONTRACTOR A.16-NO INSPECTION DOCUMENTATION LOCATED FOR SELECTED SAMPLE BY BAHNSON-(CAR-099X) l 1

A.17 BAHNSON INSPECTION PROGRAM FAILURE TO IDENTIFY NON-CONFORMANCE WITHIN DOCUMENTED INSTRUCTIONS,

' PROCEDURES & DRAWINGS (NRC'IR-446/8602-U-17) i A.18 'BAHNSON SUPPORT GAPS'(NRC IR 446/8602-U-18)- A!!9 BAHNSON SQUARE GROOVE WELDS (NRC IR 446/8602-U-19 G CAR-107) i l l +. 1 l 1918R (

g:5g C w q 1 TU ELECTRIC 9/15/87 a , 3: fj _ COMANCHE PEAK STEAM ELECTRIC STATION PAGE 3'0F 7 d i LHVAC: STRUCTURAL DESIGN-VALIDATION GENERIC ISSUES

SUMMARY

'4 INDEX 1 ~ j APPENDIX-B w INTERNALLY GENERATED' ISSUES I i ' ISSUE N0'. ISSUE TITLE 'B.1 SEISMIC QUALIFICATION OF HVAC SUPPORTS i (SDAR'CP-85-54) 8.2-BAHNSON DUCTWORK SEPARATION CRITERIA'(CAR-057) # i B.3 s -DEFICIENCIES IN BAHNSON'S SEISMIC SUPPORT AS-BUILT j VERIFICATION PROGRAM-(CAR-084'& CAR-86-09) B.4 LBAHNSON UNIT 2 HVAC HANGER WORK / DOCUMENT l > REINSPECTION WAS FOUND T0.BE INDETERMINATE i (CAR-108) - B '. 5 HVAC COOLING SYSTEM (SDAR-CP-81-03) (BY HVAC SYSTEMS)- B.6 LOSS OF PRIMARY PLANT VENTILATION (SDAR 84-27). (BY HVAC SYSTEMS) B;7 QUALIFICATION OF PLANT TEMPERATURES (SDAR'85-43) (BY HVAC SYSTEMS) -B.8 SAFETY WATER CHILLER UNITS (SDAR 86-18) j (BY HVAC SYSTEMS) .B.9 SAFEGUARDS AREA FAN COOLERS (SDAR 86-22) -(BY HVAC' SYSTEMS) B.10 DEVIATION FROM SMACNA.'AND ERDA SPECIFICATIONS j FOR DUCTWORK B.11 LOCA PRESSURE ON DUCTS (SOAR CP-87-65) j 'B'12 TORNADO PRESSURE ON DUCTS (SDAR CP-87-69) d 4 4 1918f: )

_ _ = _

TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION PAGE 4 0F 7 HVAC STRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

liiDEX APPENDIX-8 f l INTERNALLY GENERATED ISSUES ISSUE NO. ISSUE TITLE B.13 MEASUREMENT OF EMBEDMENT FROM TOP 0F CONCRETE TOPPING B.14 BOLT HOLE TOLERANCE AND EDGE DISTANCE VIOLATION B.15 CONTROLLING LOAD CASE FOR DESIGN B.16 SEISMIC RESPONSE COMBINATION METHOD B.17 ANCHOR BOLT DESIGN B.18 DESIGN OF COMPRESSION MEMBERS B.19 VERTICAL AND TRANSVERSE LOADING ON LONGITUDINAL TYPE SUPPORT B.20 SUPPORT FRAME DEAD AND INERTIAL LOADS B.21 DESIGN OF ANGLE BRACES NEGLECTING LOADING ECCENTRICITY B.22 DYNAMIC AMPLIFICATION FACTORS (DAF) 8.23 REDUCTION IN MEMBER SECTION PROPERTIES DUE TO BOLT HOLES B.24 SYSTEM CONCEPT 8.25 VALIDITY OF NASTRAN MODELS (NOT APPLICABLE TO HVAC) 8.26 WORKING POINT DEVIATION STUDY B.27 REDUCED SPECTRAL ACCELERATIONS B.28 NON-CONFORMANCE WITH AISC SPECIFICATION 1918R

,' v. TU ELECTRIC 9/15/87-COMANCHE PEAKLSTEAM ELECTRIC STATION PAGE 5 0F 7-HVAC STRUCTURAL DESIGN ~ VALIDATION GENERIC ISSUES

SUMMARY

t V ) LNDE.E APPENDIX-B INTERNALLY GENERATED ISSUES l ~ ISSUE N0. ISSUE TITLE L B.29' MEMBER SUBSTITUTION 8.30 . WELD DESIGN AND SPECIFICATIONS B.31 EMBEDDED PLATE DESIGN B.32 SYSTEM TO SUPPORT ~ CONNECTIONS i B.33 FSAR LOAD COMBINATIONS B.34 . DIFFERENCE BETWEEN INSTALLATION AND DESIGNI CONSTRUCTION DRAWINGS WITHOUT APPROPRIATE DOCUMENTATION B.35 DESIGN CONTROL I -8.36 DESIGN OF SUPPORT NO. 3136. DETAIL "5" CTH-DRAWING 2323-S-0905 (NOT APPLICABLE TO HVAC)' B.37 LOADING IN STRESS MODELS B.38 DESIGN 0F FLEXURAL MEMBERS B.39 SYSTEM - STRUCTURAL QUALIFICATION j B.40 BASE ANGLE: DESIGN B.41 SUPPORT QUALIFICATION BY SIMILARITY (NOT APPLICABLE TO HVAC) B.42 CRITICAL SUPPORT CONFIGURATIONS AND LOADINGS B.43 CUMULATIVE EFFECT OF REVIEW ISSUES 8.44 SYSTEM DAMPING VALUES .B.45 MODELING 0F B0UNDARY CONDITIONS I-k 1918R I

.u; G TV ELECTRIC .9/15/87 L C0MANCHE PEAK STEAM ELECTRIC STATION PAGE 6 0F 7-l Y HVAC STRUCTURAL DESIGN VALIDATION-GENERIC ISSUES

SUMMARY

(3)- REFERENCES

1. SAG.CP23. " SEISMIC DESIGN CRITERIA FOR HVAC-DUCTS AND DUCT SUPPORTS FOR CPSES NOS. 1 & 2 " REV 1. DATED JUNE 5, 195) j

2. SAG.CP24. " GENERAL INSTRUCTIONS FOR HVAC DUCT AND DUCT I

SUPPORT ANALYSIS FOR CPSES NOS. 1 & 2." REV 3. DATED 8/14/87

3. SAG.CP31 " DESIGN CRITERIA FOR SEISMIC CATEGORY II HVAC DUCI AND DUCT SUPPORTS." REV 1. DATED JULY 2, 1987 I

4.. SAG.CP32 " GENERAL INSTRUCTIONS FOR SEISMIC CATEGORY II HVAC DUCT AND DUCT SUPPORT ANALYSI3." REV 1. DATED 8/14/87

5. SAG.CP33 " STATIC TESTING 0F HVAC DUCTS." REV 1. DATED u

JUNE 22, 1987

6. CPE-EB-FVM-CS-029. " FIELD VERIFICATION METHOD PROCEDURE FOR SEISMIC HVAC DUCT AND DUCT HANGER AS-BUILT VERIFICATION IV UNIT 1 & 2 AND COMMON AREAS." REV 4. DATED AUGUST 24, 193?

l

7. CPE SPECIFICATION 2323-MS-85 REV 4,"HVAC - DUCTS, LOUVER 3, AND ACCESSORIES " MAY 1, 1987 l

8. CPE-EB-FVM-CS-066, " PROCEDURE FOR AS-BUILT VERIFICATION OF SEISMIC HVAC AIR HANDLING UNITS, PLENUMS, AND EQUIPMENT SUPPORTS IN UNITS 1 & 2." REV 0, JUNE 2, 1987 l

l l 1918R

IW' .TU ELECTRIC 9/15/87 COMANCHE PEAK STEAM ELECTRIC STATION -PAGE:7 0F.7 1

HVACLSTRUCTURAL DESIGN VALIDATION GENERIC ISSUES

SUMMARY

'(3) REFERENCES'(CONT'D) l i 9.' SAG.CP30. " SEISMIC' DESIGN CRITERIA FOR AIR. HANDLING. UNITS, 'PLENUNS.'AND EQUIPMENT SUPPORTS FOR COMANCHE PEAK SES- ' UNITS 1 & 2," REV Or DATED. JUNE 29. 1987.

10. 080'-CS-086, " DESIGN BASIS DOCUMENT - HVAC DUCT AND DUCT SUPPORTS" REV. 0. DATED JULY 31, 1987.

11..AWS-Di.1-1975 " STRUCTURAL WELDING CODE". .AWS-Di.3-1981 " STRUCTURAL WELDING CODE - SHEET STEEL". NCIG-01.(VWAC) " VISUAL WELD ACCEPTANCE CRITERIA".

12. QC PROCEDURES:

y I QI-QP-11.14-14. " VERIFICATION / INSPECTION OF SEISMIC HVAC SYSTEMS"..REV. 2. DATED 1 AUGUST 29, 1987.- 1 QI-QP-11.14-15."INSPECTIONOFSITEFABRICATION/INSTALE4 TION / REWORK 0F HVAC SYSTEMS",-MAY 1. 1987. QI-0P-11.21-1,'" REQUIREMENTS FOR VISUAL WELD INSPECTION". f NOA 3.09-6.02 " DUCT / HOUSING LEAK TEST INSPECTION" (T0 BE ISSUED).

13. ECC 10.99-HV-001, "HVAC-INSTALLATION, REWORK AND REPAIR".

i 1918R ((}}