ML20197B868
| ML20197B868 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 02/27/1998 |
| From: | Trimble D NRC (Affiliation Not Assigned) |
| To: | Hinnant C CAROLINA POWER & LIGHT CO. |
| References | |
| TAC-MA0336, TAC-MA0337, TAC-MA336, TAC-MA337, NUDOCS 9803120218 | |
| Download: ML20197B868 (5) | |
Text
_ _________-________ _ _ -
.4 Tebruary 27, 1998 Mr. C. S. Hinnant, Vice President Carolina Power & Light Company Brunswick Steam Electric Plant Post Office Box 1042g Southport. North Carolina 28461
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION REGARDING REQUEST FOR ALTERNATIVE TO CODE REQUIRED PUMP VIBRATION MONITORING -
BRUNSWICK STEAM ELECTRIC PLANT, UNITC NO.1 AND 2 (TAC NOS.
MA0336 AND MA0337)
Dear Mr. Hinnant:
By [[letter::BSEP-97-0504, Requests Approval for Bsep,Units 1 & 2,to Use Alternative to Vibration Testing Requirements of ASME BPV Code,Section XI & Asme/Ansi Operations & Maint Stds,Part 6, IST of Pumps in LWR Power Plants, IAW 10CFR50.55a(a)(3)(ii)|letter dated December 8,1997]], you submitted a request to use an alternatlve to the vibration testing requirements of the American Society of Mechanical Engineers (ASME) Boller and
- Pressure Vessel Code,Section XI, and ASME/American National Standards Institute (ANSI)
Operations and Maintenance Standards, Part 6 (ASME 1988a),' Inservice Testing of Pumps in Light Water Reactor Power Plants."
To support the NRC staff's review schedule, your written response to this request for additional information is expected within 30 days of the receipt of this letter. Should you have any questions, do not hesitate to contact me at (301) 415-2019.
Sincerely, Original Signed by:
David C. Trimble, Project Manager Project Directorate 111 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation Docket Nos. 50 325 and 50-324 l
Enclosure:
As stated f
ec w/ enclosure:
See next page 7, a-r.&m grq Djstribution
'~
~
Seeket File"A KDempsey PUBLIC OGC PD ll 1 RF ACRS J. Zwolinski L. Plisco. Ril lI IH FILENAME - G:\\BRUNSWIC\\ BRA 0336.RAI OFFICE PM:PDll 1 LA:PDll 1 PD:PDil 1lL NAME DTiimble.di Dunninftok PTKUOk DATE-2/4 98 2/8i98 2b8 COPY
$lNo M No Yeh
~
OFFICIAL RECDRD COPY 9803120218 900227 PDR ADOCK 05000324 P
4 Tobruary 27, 1998 4
Mr. C. S. Hinnant, Vice President Carolina Power & Light Company Brunswick Steam Electric Plant Post Office Box 10429 Southport, North Carolina 28461
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION REGARDING REQUEST FOR ALTERNATIVE TO CODE REQUIRED PUMP VIBRATION MONITORING -
BRUNSWICK STEAM ELECTRIC PLANT, UNITS NO.1 AND 2 (TAC NOS.
MA0336 AND MA0337)
Dear Mr. hinnant:
By letter dated Decembec & RsL */ou submitted a request to use an attemative to the vibration testing requirements of the Amerc.Jn Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code,Section XI, and ASME/American National Standards Institute (ANSI)
Operations and Maintenance Standards, Part 6 (ASME 1988a), ' Inservice Testing of Pumps in
)
Light Water Reactor Power Plants.'
To support the NRC staff's review schedule, your written response to this request for additional information is expected within 30 days of the receipt of this letter. Should you have any questions, do not hesitate to contact me at (301) 415 2019, 1
Sincerely.
Original Signed by:
David C. Trimble, Project Manager Project Directorate 111 Division of Reactor Projects - 1/Il Office of Nuclear Reactor Regulation Docket Nos. 50-325 and 50-324
Enclosure:
As stated cc w/ enclosure:
See next page DistributiOD Docket File KDempsey PUBLIC OGC PD 111 RF ACRS J. Zwolinski L. Plisco, Ril FILENAME G:\\BRUNSWIC\\ BRA 0336.RAI OFFICE PM:PDil 1 LA:PD'l.1 PD:PDil-1R NAME DTrimble.Ol Dunninhok PTKUOh 2/ f98 2/4 98 2b8 2
DATE COPY
$/No M No Ye h
~
OFFICIAL RECbMD COPY
f C*o g
/1 k
UNITED STATES 9
)
3 NUCLEAR REGULATORY COMMISSION s*
j WASHINGTON, D.C. 30MME41
%, *.t..+/
Tebruary 27, 1998 Mr. C. S. Hinnant, Vice President Carolina Power & Light Company Brunswick Steam Electric Plant Post Office Box 1042D Southport, North Carolina 28461
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION REGARDING REQUEST FOR ALTERNATIVE TO CODE REQUIRED PUMP VIBRATION MONITORING -
BRUNSWICK STEAM ELECTRIC PLANT, UNITS NO.1 AND 2 (TAC NOS.
MA0336 AND MA0337)
Dear Mr. Hinnant:
By [[letter::BSEP-97-0504, Requests Approval for Bsep,Units 1 & 2,to Use Alternative to Vibration Testing Requirements of ASME BPV Code,Section XI & Asme/Ansi Operations & Maint Stds,Part 6, IST of Pumps in LWR Power Plants, IAW 10CFR50.55a(a)(3)(ii)|letter dated December 8,1997]], you submitted a request to use an alternative to the vibration testing requirements of the American Society of Mechanical Engineers (ASME) Boller and Pressure Vessel Code,Section XI, and ASME/American National Standards Institute (ANSI)
Operations and Maintenance Standards, Part 6 (ASME 1988a), *lnservice Testing of Pumps in Light Water Reactor Power Plants."
To support the NRC staffs review schedule, your written response to this request for additional information is expected within 30 days of the receipt of this letter. Should you have any questions, do not hesitate to contact me at (301) 415-2019.
Sincerely, kGv:d 0. &dh David C. Trimble, Project Manager Project Directorate ll 1 Division of Reactor Projects -l/ll Office of Nuclear Reactor Regulation Docket Nos. 50-325 and 50 324
Enclosure:
As stated cc w/ encl: See next page
Mr. C. S. Hinnant Brunswick Steam Electric Plant Carolina Power & Light Company Units 1 and 2 cc:
Mr. William D. Johnson Ms. Karen E. Long Vice President and Senior Counsel Assistant Attomey General Carolina Power & Light Company State of North Carolina Post Office Box 1551 Post Office Box 629 Raleigh, North Carolina 27602 Raleigh, North Carolina 27602 Mr. Jerry W. Jones, Chairman Mr. Rcbert P. Gruber Brunswick County Board of Commissioners Execulve Director Post Office Box 249 Publi.: Staff NCUC Bolivia, North Carolina 28422 Post Office Box 29520 Raleigh, North Carolina 27626-0520 Resident inspector U.S. Nuclear Regulatory Commission 8470 River Road Director Southport, North Carolina 28461 Site Operations Brunswick Steam Electric Plant Regional Administrator, Region il Post Office Box 10429 U.S. Nuclear Regulatory Commission Southport, North Carolina 2B461 Atlanta Federal Center 61 Forsyth Street, SW, Su;ta 23T85 Atlanta, Georgia 30303 Mr. William H. Crowe, Mayor City of Southport Mr. Mel Fry, Acting Director 201 East Moore Street Division of Radiation Protection Southport, North Carolina 28461 N.C. Department of Environment, Health and Natural Resources Mr. Dan E. Summers 3825 Barrett Dr.
Emergency Management Coordinator Raleigh, North Carotira 27609 7721 New Hanover County Department of Emergency Management Mr. J. J. Lyash Post Office Box 1525 Plant Manager W:Imington, North Carolina 28402 Carolina Power & Light Cnmpany Brunswick Steam Electric Plant Ms. D. B. Alexander Post Office Box 10429 Manager Southport, North Carolina 2B461 Performance Evaluation and Regulatory Affairs Public Service Commission Carolina Power & Light Company State of South Carolina 412 S. Wilmington Street Post Office Drawer 11649 Raleigh, North Carolina 27601 Columbia, South Carolina 29211 Mr. K. R. Jury Mr. Milton Shymlock Manager-R99ulatory Affairs U. S. Nuclear Regulatory Commission Atlanta Federal Center Caroliaa Power & Light Company Post Office Box 10429 61 Forsyth Street, SW, Suite 23T85 Southport, NC 28461-0429 Atlanta, Georgia 30303
i QUESTIONS REGARDING A PUMP REllEF REQUEST PUMP VIBRATION MONITORING BRUNSWICK STEAM ELECTRIC PLANT. UNIT NOS.1 AND 2 IST PROGRAM SUBMITTAL DATED DECEMBER 8.1997 1.
The Code require 3 the frequency response range of vibration measurement instruments to extend as low as one third minimum pump shaft rotational speed.
For the positive displacement standby liquid control system pumps in question, one third of the minimum pump rotational speed is approximately 128 rpm, which corresponds to 2.1 Hertz.
However, the frequency response range of instrumentation used for these pumps extends only as low as 5 Hertz, which falls short of the requirements by approximately 2.9 Hertz.
In order to support the statement in the basis that this instrumentation will provide adequate information to evaluate pump condition, please provide documentation, including manufacturer's recommendation, that demonstrates that these pumps are not susceptible to rolling element bearings degradation mechanisms that result in increased vibration levels seen at frequencies below the pump rotational speed frequency, such as impacts fro.n rolling element bearing cage defects.
Also instruments with a response range that extends as low as 3 Hertz are commonly used and available. Address the practicability of procuring such an instrument for use on these pumps.
2.
OH 6 allows either displacement or velocity in measuring vibration.
NUREG/CP-0111. " Proceedings of the Symposium on Inservice Testing of Pumps and Valves," contains a paper presented by J. Howard Maxwell.
" Measurements of Vibrational Parameters for Pump Testing," which states that displacement is.the better parameter in determining vibration severity of machines which operate below 600 rpm.
Please address the applicability of measuring displacement for the standby liquid control system pumps in this relief request.
Enclosure v
w
.--w r
e.-----wwy-7-y, m.w.
m.
.in.m-y-.m----
y-m-M 9-m z
-,-m-w---