ML18003B307
| ML18003B307 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 06/06/1986 |
| From: | Zimmerman S CAROLINA POWER & LIGHT CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-1038 NLS-86-204, NUDOCS 8606120262 | |
| Download: ML18003B307 (8) | |
Text
REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDB)
ACCESSION NBR: 8606i20262 DOC. DATE: 86/06/06 NOTARIZED:
NO DOCKET FACIL:50-400 Shearon Harris Nuclear Power Planti Unit ii Carolina 05000400 AUTH. NAJ'IE AUTHOR AFFILIATION ZINNERt'fANiB. R.
Carolina Power Zc Light Co.
REC IP. NANE REC IPIENT AFFILIATION DENTON> H. R.
Office of Nuclear Reactor Regulationi Director (post'5ii25,
SUBJECT:
Responds to confirmatory items identified in SSER 3
(NUREQ-i038)i Section
- 3. i0. ii "Operability Qualification of
'mechanical Equipment. " DraFt revised list of active valves expected bg 8606i2. Justification For qualification encl.
DISTRIBUTION CODE:
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60 TITLE: Licensing Submittal:
PSAR/FSAR Amdts 8f Related Correspondence NOTES: Ap p 1 icat ion for p ermit renewal fi 1 ed.
05000400 REC IPIENT ID CODE/NAME PWR-A EB PWR-A FOB PWR-A PD2 PD PMR-A PSB INTERNAL: ADN/LFNB IE FILE IE/DGAVT/GAB 2i NRR PMR-B ADTS gl3INElNEQFIB RN/DDANI/t)IB EXTERNAL: 24X Dl'tB/DSB (ANDTS)
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CSCK Carolina Power 8 Light Company gUN 06 1986 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation United States Nuclear Regulatory Commission Washington, DC 20555 SHEARON HARRIS NUCLEAR POWER PLANT UNIT NO.
1 - DOCKET NO.50-000 PUMP AND VALVEOPERABILITYREVIEW
Dear Mr. Denton:
SERIAL: NLS-86-200 Carolina Power R Light Company hereby responds to confirmatory items identified in the Shearon Harris Safety Evaluation Report (SER), NUREG-1038, Supplement No. 3, Section 3.10.1, Operability Qualification of Mechanica/ Equipment.
LIST OF ACTIVEVALVES As indicated in our 3anuary 27, 1986 letter, the FSAR willbe revised upon completion of the ongoing active valve list reviews.
We willsubmit by 3une 12, 1986 a draft revised list of active valves (Tables 3.9.3-13 and 10) containing changes which have resulted from reviews completed to date and willdocket a final list prior to fuel load.
QUALIFICATIONBY ANALYSIS The Staff requests in the SER, Supplement No. 3 submittal of the following additional information to support qualification of safety-related valves by analysis only.
Identification of Valves The Staff requests that safety-related valves that have been qualified by analysis only be identified. For this purpose, we willadd a new column to the draft list of active valves referenced above.
The column willcontain specific information on the qualification methodology (e.g., analysis only, combination of tests and analysis).
3ustification of Method of uglification Enclosure 1 describes the qualification methodology used at Shearon Harris.
We have also included a comparison of actual accelerations to the analyses accelerations for ten valves to illustrate the margin of safety in our calculations.
In addition, Shearon Harris pipe stress analysis has inherent conservatisms which include:
enveloped response spectra, low damping values, left out force for rigid mode consideration, peak spreading of response spectra absolute summation of closely spaced modes, and spectral peaks and seismic displacements assumed to occur at the same time.
411 Fayettevilte Street o P. O. Box 1551
~ Raleigh, N. C. 27602 86061202h2 8b0606 PDR ADOCK 05000400 E
PDR j~
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Mr. Ha'roid R. Denton NLS-86-200/Page 2
Our confidence that mechanical equipment willoperate during and following the Safe Shutdown Earthquake has also been reinforced by the results of the work performed by the Seismic Qualification UtilityGroup.
We have reviewed the seismic experience database which has shown that mechanical equipment has inherent seismic ruggedness and a demonstrated capability to withstand significant seismic motion without structural damage.
0 erabilit Assurance Operability assurance stems from the factors stated above.
Design specifications, manufacturer's test and analysis reports, design calculations, hydrostatic tests, leakage rate tests, the inherent conservatism in the pipe stress analysis, and seismic experience data provide reasonable assurance of equipment operability.
CONCLUSION Shearon Harris has a sound and-strong pump and valve operability review program.
This is witnessed by the FSAR and the December 3-6, 1985 on-site NRC audit conducted by members of your staff and consultants, whom are experienced in the review of other utilityprograms and valve vendors.
If you have any questions, please contact Mr. Pedro Salas at (919) 836-8015.
Yours very truly, SRZ/CGL/pgp (3955CGL)
Attachments S.. Zi erman nager Nuclear Licensing Section Cco Mr. G. Bagchi (NRC)
Mr. B. C. Buckley (NRC)
Mr. G. F. Maxwell (NRC-SHNPP)
Dr. J. Nelson Grace (NRC-RII)
Mr. Travis Payne (KUDZU)
Mr. Daniel F. Read (CHANGE/ELP)
Mr. T. S. Moore (ASLAB)
Wake County Public Library Mr. Wells Eddleman Mr. John D. Runkle Dr. Richard D. Wilson Mr. G. O. Bright (ASLB)
Mr. J. L. Kelley (ASLB)
Dr. J. H. Carpenter (ASLB)
Dr. R. L. Gotchy (ASLAB)
Mr. H. A. Wilber (ASLAB)
ENCLOSURE I 3USTIFICATIONOF METHOD OF QUALIFICATION The operability of active pumps and valves is assured by design and safety review during the construction and operational phases of the following items:
l) specification of safety conservative performance requirements and service conditions, 2) manufacturer's tests and/or analyses in accordance with ASME, IEEE, and other codes and standards as modified by NRC guidance, if any, and 3) start-up and in-service testing as required for the safe operation of the plant; The equipment is also verified operational during its installed life by a surveillance and maintenance program.
The loading combinations and design transients for safety-related active valves are described in Section 3.9.3.1 of the FSAR.
The methods utilized in the demonstration of operability are described below:
a)
Components are designed to be capable of performing their safety function(s) during and following design basis events (i.e., LOCA, MSLB, HELB, etc.).
The design specification includes the applicable loading conditions and requires the manufacturer to perform analyses and/or tests to demonstrate operability.
b)
Analyses and tests are used to demonstrate the operability of components under applicable seismic and dynamic loadings.
Seismic and dynamic qualification is described in detail in Section 3.i0 of the FSAR. Testing is used as the method for seismic qualification if the component is mechanically or structurally complex, such that this performance cannot be adequately predicted by analysis.
c)
Components are reviewed and inspected to assure compliance of critical parameters with specification and drawings.
This confirms that the design bases, environmental conditions, and functional requirements which are listed in specifications and/or design drawings are met (e.g., confirming that specified materials and processes are used, that wall thicknesses meet code requirements, and that fits and finishes meet the specification requirements).
These parameters include design conditions and performance requirements such as pressure, temperature, radiation, chemical spray, submergence,
- flow, pump head, available NPSH, pump speed, stall current, valve opening and closing times, and maximum differential pressure.
d)
Testing is performed to verify adequacy of as-built components.
These tests (i.e., hydrostatic test, leakage rate test, etc.) confirm the operability and the pressure retaining capability, leakage characteristics, and structural integrity of active pumps and valves.
e)
Pre-operational, start-up, and periodic in-service testing in conjunction with a surveillance and maintenance program demonstrate operability readiness throughout the life of the plant.
(3955CGL/pgp)
f)
Electric operators and other electrical appurtenances required for safety operation are seismically qualified in accordance with IEEE 300-1971/1975 and satisfy the requirements of IOCFR50.09 for harsh environments.
The environmental qualification program for electrical and mechanical equipment is described in Section 3.11 of the FSAR.
Active pumps and valves have been reviewed to confirm the adequacy of the equipment structural and operational integrity under normal, accident, and post-accident conditions.
The review involved three major areas of the specific equipment application in the plant; namely, general component information, equipment function, and equipment qualification. The reference material consulted to complete the review included the following:
Design Specifications Design Drawings from Vendor Manufacturers Test and Analysis Reports Instruction Manuals and Catalogs Valve List and Line List System Flow Diagrams Equipment Specifications FSAR Design Calculations Vendor Correspondence Plant Operations Manuals The above description describes the methodology used in the SHNPP PVORT Program.
A comparison of actual versus calculated accelerations has been prepared for a sample of ten active valves.
The results are shown in Table I.
(3955CGL/pgp)
TABLEI ACTIVEVALVE ACTUALVS TEST/ANALYSISCOMPARISON FOR PVORT VALVE8 BOP SUPPLY 2AF-V162SAB 2BD-P7-SB 2CM-B5-SA 3SC-V26-SA 3FO-V-258SA 2FW-V-27SAB
~NSSS Sco e
2CC-V169SA-1 (9030A)
DESCRIPTION 1" Globe, ITT Hammel Dahl 2" Globe, ITT Hammel Dahl 3" Butterfly, BIF Valve with Bettis Operator 3" Globe, ITT Hammel Dahl 2" Globe, Yarway 16" Gate,-
Borg Warner 6" Gate, Velan (6GM62FB)
ACTUAL ACCEL. (g) 1.091(x)
.863(y)
.296(z)
.900(x) 1.360(y)
.683(z)
.e08(x)
.690(y)
.O07(z)
.599(x)
.399(y)
.399(z)
.562(x)
.378(y)
.920(z) 1.121(x) 1.399(y)
.921(z)
.col(x) 2.600(y)
.519(z)
TESTED ACCEL.
NA
(>33Hz)
NA
(>33Hz)
NA
(>33Hz)
NA
(>33Hz)
NA
(>33Hz)
NA
(>33Hz)
ANALYSIS ACCEL. (g) 3.0(x) 2.0(y) 3.0(z) 3.0(x) 2.0(y) 3.0(z) 3.0(x)
O.o(y) 3.0(z) 3.0(x) 2.0(y) 3.0(z) 5.0(x) 5.0(y) 5.0(z) 5.20 All Directions 5.0 g's Resultant REMARKS NRC Selected Item
TABLEI (CONT'D)
ACTIVEVALVE ACTUALVS TEST/ANALYSISCOMPARISON FOR PVORT VALVEj$
~NSSS"Sco e (Cont'd) 1CS-V510SB (8153) 3SI-V-503SA (8803A) 2RH-V-507SA (8706B)
DESCRIPTION 1" Globe, Copes Vulcan 3" Gate, Westinghouse 8" Gate, Westinghouse ACTUAL ACCEL. (g) 1.06(x) 1.00(y) 1.06(z)
.O61(x) 1.055(y)
.O67(z) 1.176(x)
I.O28(y)
.966(z)
TESTED ACCEL.
Og's All Directions 0.0g's All Directions (Static) 0.0g's All Directions (Static)
ANALYSIS ACCEL. (g) 2.1g's All Directions 0.0g's All Directions 0 Og's All Directions REMARKS