ML20094B215
| ML20094B215 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 09/18/1984 |
| From: | Minichiello J, Weingart L, Williams N CYGNA ENERGY SERVICES |
| To: | |
| Shared Package | |
| ML20094B179 | List: |
| References | |
| DC-1-01, DC-1-1, DC-1-R02, DC-1-R2, NUDOCS 8411070061 | |
| Download: ML20094B215 (14) | |
Text
.
Job Ho. 83090 "x
Doc. No. DC-1
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Rev. 2 INDEPENDENT DESIGN VERIFICATION PIPE STRESS DESIGN REVIEW CRITERIA FOR CCMANCHE PEAK STEAM ELECTRIC STATION TEXAS UTILITIES SERVICES, INC.
Prepared by 82'
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Weingart Date Approved by
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N. Williams Date CYGNA ENERGY SERVICES 101 California Street, Suite 1000 San Francisco, California 94111 September, 1984 8411070061 841012 PDR ADOCK 05000
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TABLE OF CONTENTS Q,,3 -
Section Page i
1.0 INTRODUCTION
3 2.0 SCOPE.................................................
3 i
3.0 CODES,-STANDARDS AND REFERENCE DOCUMENTS...............
4 3.1 Piping...........................................
4 3.2 Flued Head.......................................
5 4.0 DESIGN.................................................
5 4.1 General..........................................
5 4.2 Classification of Piping Systems.................
6
.4.3 Boundaries.......................................
6
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4.4 Design and Operating Conditions.................
7 4.5 Geometry and Computer Modeling...................
7 4.6 Loading and Stress Requirements..................
10 4.7 Loading Combination3.............................
13 4.8 Stress Limits....................................
13 4.9 Nozzle Load-Check...............................
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4.10 Sleeve. Clearances...............................
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5.0 EXHIBITS...............................................
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Texas Utilities Services, Inc.
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1.0 INTRODUCTION
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- The purpose of this document is to provide the criteria to be used for the review of the Piping Stress and Flued Head Analyses for, Comanche Peak Steam Electric Station (CPSES).
This Design Criteria shall be used in conjunction with Work Instruction 1,
" Assessment Procedures," for details on the review methodology and documentation requirements.
2.0 SCOPE The scope of the pipe stress and flued head review includes the following portions of the Residual Heat Removal / Safety Injection (RHR) system, Train B:
Class 2 containment sump recirculation piping from o
containment penetration MS-2 to the suction of RHR pump TBX-RHAPRH-02 (Gibbs & Hill Stress Problem 1-069).
Class 2 RER piping from the discharge of the reference pump to the tubeside inlet of RHR heat exchanger TBX-RHAHRS-02 (Gibbs & Hill Stress Problem 1-070).
e Penetration MS-2, including the entire forging and the containment sleeve between the flued head and the con-tainment wall.
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3.0 CODES, STANDARDS AND REFERENCE DOCUMENTS
.,, S This section lists the industry standards and design basis that were applicable during the design period and should have been implemented.
These codes, standards and references provide a criteria that the design can be evaluated against.
3.1 Piping The design and stress analysis shall be reviewed for conformance with:
3.1.1 USNRC Standard Review Plan, Chapter 3 (NRC SRP).
3.1.2 ASME Boiler and Pressure Vessel Code Section III, 1974 Edition, including Summer 1974 addenda.
Note:
Later editions of the ASME code may be used if t( )
the requirements of paragraph NA-ll40 are met.
If so, the analyses will be reviewed accord-ingly.
3.1.3 The following Gibbs and Hill, Inc. Project Design Specifications:
e 2323-MS-200 Revision 3.
(ASME Section III, Code Class 2 and 3 piping), hereafter noted as Project Design Specification 2323-MS-200.
2323-MS-100 Rev 6 (Piping Erection), hereafter noted as Project Design Specification 2323-MS-100.
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Texas Utilities Services, Inc.
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L i Job. No. 83090; DC-1; Rev. 2 lilililli!iiiiiiiiiiiiiiiiilli
e 2323-MS-46A, Rev. 3 (Nuclear Safety Class Hangers
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and Supports), hereafter noted as Project Design j.
Specification 2323-MS-46A.
, 3.1.4 CPSES Final Safety Analysis Report 3.2-Flued Head The design and stress analyses shall be reviewed for conformance with:
3.2.1 ASME Boiler and Pressure Vessel Ccde Section III, 1974 Edition, including all addenda thru Summer 1976 3.2.2 Gibbs and Hill, Inc. Project Design Specification:
2323-MS-74 Section 3, including amendments 1 thru 5 (Mechanical Penetrations), hereafter noted as Project Design. Specification 2323-MS-74.
4.0 DESIGN 4.1 General J
All piping ' systems shall be reviewed for conformance with the requirements of the Code as stipulated in Subarticles NC-3600 for Nuclear Class 2 and NE-3000 for Nuclear Class MC components, i
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Texas Utilities Services, Inc.
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4.2 Classification of Piping Systems
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4.2.1 Nuclear / Quality
.. Nuclear and quality system classifications are specified in Project Design Specification 2323-MS-200, Table 3.1-2.
4.3 Boundaries 4.3.1-Piping system boundaries are designated on the flow diagrams for Nuclear Class 1, 2 and 3 piping and are described in Project Design Specification 2323-MS-200.
Piping /MC boundaries are shown in Project Design Specification 2323-MS-74.
4.3.2 The dimensional location of each piping boundary is shown on the Piping Isometric Drawings.
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4.3.3 Piping Analyses may be decoupled when:
a.
The ratio of the moments of inertia of the run and branch piping exceeds 10.0.
b.
The restraint configuration and piping layout of the branch line is such that the effects of any large mass (e.g., valves) on the branch line will not significantly affect the run pipe.
4.3.4 Flued Heads and major equipment nozzles (RHR pump, heat exchanger) shall be considered as anchor points in the piping analyses.
Texas Utilities Services, Inc.
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4.3.5 Anchor points for flued head analysis are as
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described in Section 3.6.4.3 of Project Design Specification 2323-MS-74.
4.4 Design and Operating Conditions Analysis data shall be. reviewed for conformance with the following:
4.4.1 The design pressures and temperatures for each piping system tabulated in Project Design Specification 2323-MS-200, Appendix 3, and Project Design Specification 2323-MS-74, Table 3.6-1 4.4.2 The operating pressures and temperatures for the piping tabulated in Project Design Specification 2323-MS-200, Appendix 8, and Project Design Specification 2323-MS-74, Table 3.6-1.
4.5 Geometry and Computer Modeling 4.5.1 The piping geometry used as it;put data for computer analysis shall be reviewed for conformance with the latest revision of the_ Brown'& Root "BRHL" isometric drawings.
Analysis isometrics shall be compared to the' Brown & Root as-built isometric drawings (BRP as-built drawings) for conformance with the following tolerances:
l Maximun centerline deviation is 2" as per Project Design Specification 2323-MS-100, Section 4.9.
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Texas Utilities Services, Inc.
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Geometries which do not conform to this tolerance shall be j
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reviewed for. impact upon the analytical results.
%J 4.5.2 Restraint locations input for computer analysis shall 1
, be reviewed for conformance with the latest revision of the "BRHL" isometric drawings.
When compared to the pipe support as-built configuration, these locations should be within the tolerances of TUSI Verification Procedure CP-EI-4,5-1, Section 3.2.4, i.e.,
2",
Restraint locations which do not conform to these tolerances shall be reviewed for impact upon the analytical results.
4.5.3 Pipe properties shall be reviewed for conformance with Project Design Specification 2323-MS-200, Appendix 3.
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4.5.4 Material properties shall be reviewed for conform-ance with Project Design Specification 2323-MS-200, Appendix 3, the associated piping isometric drawings and ASME B&PV Code,Section III, Appendix I.
4.5.5 Poisson's ratio shall be taken as 0.3 for all metals at all temperatures.
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Job. No. 83090; DC-1; Rev. 2 til!llilll8lIllilll!!!lllillli
w 4.5.6 Mass point spacing chall be reviewed for adequacy of
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representing the dynamic properties of the system up to 33 Hz for seismic analysis.
4.5.7 Valve modeling shall te reviewed for conformance
' with the following conventions:
- a.. Weights and centers of gravity shall be as specified on the applicable vendor supplied valve assembly drawings, except as amended in 2323-MS-200, Appendix 10.
b.
For extended operator valves, modeling of the operator shall be such that the first frequency of the valve stem equals or exceeds 33 Hz, t
4.5.8 Flange modeling shall be reviewed for conformance with the following conventions:
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a.
Flanges shall be considered as additional lumped
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weights.
b.
Flange thickness shall be assumed as the same thickness of the pipe for purposes of modeling stiffness.
4.5.9 The penetration assembly (flued head) finite element mod'eling shall be reviewed for conformance with Fig. 74-1, Rev. A, of Project Design Specification 2323-MS-74 and the appropriate fabrication drawings.
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4.6 Loading and Stress Requirements
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Review to assure that each load case meets the general require-ments as specified in the Code with emphasis placed upon the following particular items.
4.6.1-Stress intensification factors shall be reviewed for conformance with:
a.
ASME B&PV Code,Section III subarticle NC-3670.
b.
Applicable Bonney. Forge Reports for weldolets.
4.6.2 Pressure Effect The effect of internal pressure shall be considered in com-puting icngitudinal stress per the Code.
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4.6.3 Gravity Analysis a.
Review to assure that the weight of the pipe, fluid, insulation, fittings, flanges, valves (Jncluding actua-tora) and other in-line compenents have been considered.
4.6.4 Thermal Analysis a.
Review to assure that and all thermal modes have been considered.
j b.
Review to assure that the effects of thermal movements l.
from equipment nozzles have been considered.
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4.6.5
_ Seismic Analysis a,
Review to assure that 1/2 SSE and SSE spectra at appro-priate damping values for all pertinent buildings at the proper elevations have been enveloped.
Individual building response spectrum curves are provided in Appendix 5 of of Project Design Specification 2323-MS-200.
b.
Review to assure that damping values are consistent with CPSES-FSAR Table 3.7 B-1 i.e.,
Damping Ratio (Percentage)_
l HPipe Size OBE SSE Pipe diameter greater than-12 inches 2
3 Pipe diameter less than or equal to 12 inches 1
2 1
The damping ratio is assumed to be the same for all modes.
c.
Review to assure that the method used for combining modal responses conforms to NRC Regulatory Guide 1.92 revision 1.
d.
Review to ausure that analysis cut-off frequcncy used was at least 33 Hz.
4 e.
_ Review to assure that piping is designed and supported such that the acceleration of the active valves does not Texas Utilities Services, Inc.
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exceed 3 g in any horizontal direction, 2 g in the ver-f^'Y; tical direction, or lower g values as required by the
'T respective manufacturers.
Review to assure that at least 90% of the mass has been f.
included in the computer calculation for dynamic analyses.
If this criterion is not met, the results will be evaluated on a case by case basis to assuce that the calculated loads and stresses are acceptable.
4.6.6 Seismic Anchor Movement (SAM) Analysis Review to assure that seismic differential anchor movements have been considered.
If piping passes between buildings, proper phasing should be taken into account.
Movements are provided in Appendix 5 of Project Design Specification 2323-MS-200.
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4.6.7 Restraint stiffness input shall be reviewed for s
conformance with Table 3.4-1 of Project Design Specification 2323-MS-200.
4.6.8 Flange design shall be reviewed for conformance with the stress requirements of the Code paragraph NC-3647.
4.6.9 Functional Capability Review the maximum primary stress data to insure that the piping can deliver rated flow under all conditions as required in NRC SRP Section 3.9.3.
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.4.6.10 Flued Head Loading Flued head applied loads shall be reviewed'for conformance with Table-3.6-2 of Project Design Specification 2323-MS-74.
4.7 Loading Combinations 4.7.1 Load combinations for nuclear class 2 piping will be as specified~in ASME Code Subarticle NC-3650 and in Table 5.2-1 of Project Design Specification 2323-MS-200.
Load combinations for the Tlued Head fitting will be as specified in ASME Code Subarticle NE-3100 and in Table 3.6-3 of Project Design Specification 2323-MS-74.
4 ~. 8 Stress Limits 4.8.l Stress limits for the Class 2 piping shall be in accordance with the Code, except.as modified-in Table 5.2-1 l,'OO of Project Design Specification 2323-MS-200 for essential piping.
For the flued head fitting, Table 3.6-3 of Project Design Specification 2323-MS-74 shall apply.
4.9 Nozzle Loa'd Check i
4.9.1
-Equipment nozzle loads shall be reviewed for conformance with the applicable data from Appendix 4 of Project Design Specification 2323-MS-200.
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4.10 Sleeve Clearances
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4.10.1 Sleeve clearances (piping passing thru floors or walls) shall be reviewed to insure no interference between
- the pipe and sleeve.
5.0 EXHIBITS None 4
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