ML20072B151
| ML20072B151 | |
| Person / Time | |
|---|---|
| Site: | Shoreham File:Long Island Lighting Company icon.png |
| Issue date: | 11/22/1982 |
| From: | Le H GENERAL ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML20072B132 | List: |
| References | |
| B31-F031, B31-F031-R23, B31-F31, B31-F31-R23, NUDOCS 8306130332 | |
| Download: ML20072B151 (5) | |
Text
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KSI-B31-F031 3
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J SHOREHAM NUCL'2AR l
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UNIT 1 i
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i DYNAMIC QUALIFICATION y
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I COMPONENT NAME: Recirculation Discharge Gate Valve j
MPL OR EDL ITEM NO.: B31-F031 j
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MPL
REFERENCE:
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EQUIPMENT CLASSIFICATICIN:
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THE SEtSMIC QUALIFICATION REPORT (S) IDENTIFIED HEREIN HAVE DEEN EVALUATED AND REQUALIFIED WHERE NECESSARY TO SHOW THAT THE ABOVE. MENTIONED i
i COMFONENT IS CAPABLE OF MEETING THE NUCLEAR REGULATORY COMMISSION
.EISMIC OUALIFICATION REVIEW TEAM (SORT) REQUIREMENTS.
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General Electric Company - NEB 0 ORGAN::ATiON r'
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SORT PROGRAMWANAGER i
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RESPONSIBLE DESidN ENGINCER 1'
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. QUALIFICATION
SUMMARY
- 1. COMPONENT NAMC Recirculation Discharfe Cate Valve
~2. LIPL OR EDL ITEM NO:
B31-F031
- 3. QUALIFICATION DOCUMENTATION (ENCLOSED WITH THIS REPORTI A OUALIFICATION SUVMARY OF EQUIPMENT (SCRT FORM).INCLUD'ING REQUIRED RESPONSE SPECTRAWITH TRS PLOTTED ON RRS GRAPH. AS APPROPRIATE.
Qualification su=: nary is attached. RRS and TRS were not used because test conducted was a RIM test.
B. SORT EVALUATION FLOW CHARTS (M ARKED TO SHOW DECISION PATH).
Attached C. REFERENCE DOCUMENTS REFERENCE DOCUMENT REVISION OR TITLE /5UBJECT NUMBER IDENTIFICATION DATE 1
VPF #2806-1 Rev. 10 Recirculation Discharge Valve Outline
& Assembly Drawing 2
VPF #2806-3 Rev. 2 Limitorque Valve Control Drawing 3
16511-9 12/3/81 Report of Test for Seismic Qualifi-cation of two Actuators SMB-1-60 (DC) and SMB-2-60 (AC) for Limitorque Corporation 4
B-0115 6/24/82 Hydrodynamic Vibration Testing (New Loads) 5 DRF #206-Recirculation Gate Valve Analysis -
B33-BLKV-KS1 Shoreham Discharge Valve PP. 238-322 6
VPF #2809-40 Rev. 5 Vendor Stress Report 7
NEDE-24788-1 June, 1981 SQRT Technical Approach for Re-evaluation of BWR Equipment D. ADDITIONAL SUPPORTING DOCUMENTS DOCUMENT REVISION OR IDENTIFICATION DATE TITLE / SUBJECT GE 21A9200 Rev. 9 Purchase Specification - Gate Valve GE 385HA777 Rev. O Dynamic Loads' Methods and Criteria -
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QUALIFICATION
SUMMARY
(COMTINUED)
B31-F031 IdPL ITEM NO.
- 4. REQUIREMENTS The pressure retaining parts (valve body and bonnet) of the recirculation dis-charge valve (Ref.1) must maintain their pressure integrity during the appli-cable loading events.
In addition, since the valve is classified as active, its structure including the actuator (Ref. 2) must be capable of withstanding the maximum accelerations in these events and remain operable.
Functional
Description:
The valve is open during normal operation and is re-quired to be closed during an LPCI injection to the reactor pressure vessel.
8 DEMONSTRATED CAPAeglTV A three-dimensional finite element model df the valve and actuator was developed and analyzed to determine the valve r:'aximum capability for structural integrity.
In addition, the valve was modeled as a single element and included in the piping system.
Dynamic analysis using the response spectrum analysis method was performed on the piping system.
Seismic and suppression pool hydrodynamic loads were considered.
Critical location stresses were evaluated and compared with the allowable stress criteria.
The operability of the actuator was demon-strated by a single-axis, single-frequency test on similar actuators.
Results of the structural integrity analysis and operability tests on the actua-tor demonstrated that the valve will maintain its structural integrity and the
, actuator will operate satisfactorily during and following the dynamic loading events 6 RAllONALE FOR CUALIFICAT60N CERTLFICATION (INCLUDE DECtstON AN ALYsts wiTH COMPARisDN TO ACCEPTAN::E CRITERIA. APPnOACH FOR DEMONSTRATING OPERADILITY, AND CONst0ERAllON OF HICH-F AECUENCY REsrONsE.)
Qualification certification is justified because the methods used in the equip-ment analysis were based on requirements specified in the Reference 7 document.
A three-dimensional finite element model of the valve and its extended structure was prepared and used to perform a mode / frequency analysis using the SAP 4G com-puter code.
The valve fundamental frequency was determined by the frequency analysis to be less than the seismic cut-off frequency of 33 Hz.
This required a dynamic analysis considering multimode response.
However, since the valve is pipe-nounted and the required response spectra 6t the valve location were not available, it was necessary to perfora a dynamic analysis on the. entire piping system.
A sir.ple lumped-mass model of the valve and its actuator was developed based on the valve fundamental frequency, and was used to represent the valve dynamic characteristics in the piping analysis.
A dynamic analysis was performed on the recirculation piping system using the response spectrum enalysis r.ethod.
The analysis gave the maximum dynanic accel-erstic. en
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s g-60 itz were considered and the ef fects of closely spaced modes were included using the double sum method.
Dynamic responses were combined by SRSS.
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c QUALIFICATION
SUMMARY
(CONTINUED) 6.
Rationale for Qualification Certification (Continued)
The maximum accelerations calculated by the piping dynamic analysis was applied to the three-dimensional finite element model of the valve to calculate the stress at critical locations.
Static analysis was used for the stress evalua-tion.
Structural integrity was' addressed by completing the dynamic and static analyses described above, calculating stress at critical locations, and comparing the resulting stresses to the ASME code allowables.
The code stamped pressure bound-ary components of the recirculation valve are classified as ASME B&P code Section VIII Class I equipment and must comply with the rules of this section.
At locations where the ASME code does not specifically apply (e.g., valve yoke),
methods employed by the vendor or methods based on stress analysis and mechanics principles were used.
Operability of the actuator was addressed by comparing the maximum actuator acceleration calculated by the piping dynamic analysis to the actuator performance test.
The test conducted was a single-axis, single-frequency test (Ref. 3).
Single-axis, single-frequency testing is justified because the actuator is rigid compared to the dynamic load cut-off frequency (lowest natural frequency is greater than 100 Hz, as shown in Ref. 3).
The test was performed on the two Limitorque actuators, model SMB-1-60 and SMB-2-60 which were verified by the actuator manufacturer to be similar to the model SMB-3-100 used on this recirculation discharge valve (Ref. 4).
The test followed the guideline of the IEEE 382-80 standard.
An acceleration of 10g was applied to the test actuators at a frequency range from 2 Hz to 100 Hz.
This test acceleration is sufficiently higher than the actuator maximum accelerations determined by the piping dynamic analysis
-(6.56g horizontally and 0.87g vertically, Ref. 5) to assure the actuator opera-bility.-
The dimensional information required to develop the valve finite element model was primarily obtained from the valve vendor stress report (Ref. 6).
Additional information not available in the report was requested from the vendor and is contained in the design record file (Ref. 5).
l Seismic and hydrodynamic loads were considered in the dynamic evaluation.
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NUCl.EWd FDWER SYSTEMS EN32EEi!!, S DEPl!BIMEidT MEMD T
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R. W. Hardy DATE: December 20, 1982 To:
REQUIRED RESPONSE FROM: H. Le DATE:
FOR:
ACTION O
SUBJECT:
JUSTIFICATION OF LIMITORQUE ACTUATOR DECISION O SINGLE-AXIS TESTING - SHOREHAM SQRT INFORMATION b
References:
- 1. Limitorque Seismic Qualification Envelope, Report # B0037
- 2. Report of Test for Seismic Qualification of Two Actuators SMB-1-60 (DC) and SMB-2-60 (AC) for Limitorque Corpo.
ration, Report # 16511-9
- 3. Recirculation Gate Valve Analysis - Shoreham Discharge Valve, VPF# 206-B33-BLKV-KS1, pp.238-322 The multi-axis testing requirement is to address possible cross coupling effects of the equipment. Testing (Ref.1. Section 2.0.7) has shown that no cro:;s-coupling exists on the Limitorque actuators.
The single-axis tests are, therefore,. justified.
However, it should be noted that the Shoreham recirculation discharge valve actuators would be qualified even if cross coupling existed by applying tht factor 1.414 to the required accelerations (Ref. 3).
This gives 9.27g horizontally and 1.23g vertically. These accelerations are still lower than the test accelerations of 10g (Ref. 2). Therefore, qualification could be demonstrated.
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H. Ehsan G. Samstad C. T. Nich
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