ML17303A200
| ML17303A200 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 12/26/1986 |
| From: | Haynes J ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Knighton G Office of Nuclear Reactor Regulation |
| References | |
| ANPP-39508-JGH, TAC-59971, TAC-63197, NUDOCS 8701070312 | |
| Download: ML17303A200 (10) | |
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'REQULATOR NFORNATION DISTRIBUTION 8 EN
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ACCESSION NBR: 8701'070312 DOC. DATE: 86/12/26 NOTARIZED:
NO DOCKET ¹ FACIL:STN-50-530 Palo Verde Nuclear Station> Unit 3> Arizona Publi 05000530 AUTH. NAI"IE AUTHOR AFFILIATION HAYNES> S. Q.
Arizona Nuclear Pouer 'Prospect
(,formerly Arizona Public Serv RECIP. NANE RECIPIENT AFFILIATION KNIQHTON. Q. W.
PWR Prospect Directorate 7
SUBJECT; Forwards suppl'cmental info re reactor pressure vessel pressure temp limits 5 confirms validitg of values used bM NRC in calculating limits>,per NRC 861113 request.
DISTRIBUTION CODE:
BOOID COPIEB RECEIVED: LTR J ENCL g SIZE:
TITLE: Licensing Submittal'.
PSAR/FSAR Amdts 8( Related. Correspondence NOTES: Standardi'zed plant. N. Davis> NRR: 1Cg.
05000530 RECIPIENT ID CODE/NAI'1E PWR-B EB
~ PWR-B FOB PWR-B PD7 PD PWR-B PEICSB INTERNAL: ACRS 41 ELD/HDS3 IE/DEPER/EPB 36 NRR BWR ADTS NR OE> M. L RN DDANI/RIB EXTERNAL: BNL(ANDTB ONLY)
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RECIPIENT ID CODE/NANE PWR-B PEICSB PWR-B PD7 L*
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Arizona Nuclear Power Project P.o. BOX 52034
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PHOENIX, ARIZONA85072-2034 December 26, 1986 ANPP-39508-JGH/PGN/98.05 Director of Nuclear Reactor Regulation Attention:
Mr. George M. Knighton, Project Director PMR Project Directorate ¹7 Division of Pressurized Water Reactor Licensing B U.S. Nuclear Regulatory Commission Washington, D.C.
20555
Subject:
Palo Verde Nuclear Generating Station (PVNGS)
Unit 3 Docket No.
STN 50-530 RCS P/T Limits during Heatup and Cooldown File: 86-G-056-026
Reference:
Letter from E. A. Licitra (NRC) to E. E.
Van Brunt, Jr.
(ANPP) dated November 13, 1986.
Subject:
Request for Supplemental Information-Palo Verde Unit 3, for RCS Pressure-Temperature Limits During Heatup and Cooldown.
Dear Mr. Knighton:
Attached please find the information requested by the referenced letter.
This attachment provides data with regard 'to the reactor pressu're vessel (RPV) Pressure-Temperature Limits and confirms the validity of values used by the NRC staff in the calculation of reactor vessel Pressure Temperature Limits.
If you have any questions or require additional information, please contact Mr.
William Quinn of my staff at (602) 943-7200 extension 4087.
Very truly yours, v'G4g J.
G. Haynes Vice President Nuclear Production JGH/PGN/ls Attachment cc:
0.
M.
E. E.
E. A.
R. P.
A. C.
DeMichele Van Brunt, Jr.
Licitra Zimmerman Gehr (all w/a) 8701070312 861226 PDR
- DOCK 05000530 A
PDR pa~i 11
0 ll 1
ANPP RESPONSE TO NRC REQUEST FOR ADDITIONALINFORMATION PALO VERDE, UNIT 3 REACTOR PRESSURE VESSEL PRESSURE-TEMPERATURE LIMITS 1.
Please provide the data with regard to the reactor pressure vessel (RPV)
Pressure-Temperature Limits.
a.
Is the limiting material a base
- metal, a circumferential weld or a longitudinal weldP The limiting material is base metal, which is the lower shelf plate.
I b.
Identify the limiting (controlling) material and its Cu and Ni content.
The limiting material is a
lower shelf plate M-4311-1, which is SA-533, Grade B, Class 1, with 0.04K Cu and 0.65X Ni.
c.
What inside surface neutron fluence (E 51MeV) at 10 EFPY and EOL was used with the limiting materialt For the limiting material, the inside surface neutron fluence (E>
1MeV) is 1.03xl019 neutrons/cm at 10EFPY and 3.29x1019 neutrons/cm at EOL.
d.
e.
What is the actual initial RTNDT for the limiting materia12 The actual initial RTNDT for the limiting material is O'.
What is the standard deviation of the initial RTNDT (0"I) for the limiting materialP go The standard deviation of the initial RTNDT for the limiting material is O'F (based on measured value for plate).
What is the standard deviation of M RTNDT
( Q>
)
for the limiting materialt The standard deviation of 4 RTNDT for the limiting material is O'F (predictive method is upper bound curve).
If the 6 RTNDT was calculated using Reg.
Guide 1.99, Rev.
2 (draft),
then the applicable standard deviation is 17'F (base metal).
What value of temperature measurement error was used'he temperature instrument channel error is 8'F.
8510A/2183A
Cl C
h.
What is the hydrostatic head at the location of the limiting material?
The hydrostatic
- head, due to the elevation, at the bottom of the beltline region is 29.62 psi.
During RCP operation, the pressure at the location of the limiting material is dependent on the number of RCPs in operation.
The number of operating RCPs determines the RCS flow rate and loop pressure drops.
For the limiting configuration, the pressure drop is 72.7 psig.
What value of pressure measurement error was used?
Using the narrow range pressure instrument channel at pressures ~
752 psia, the pressure measurement uncertainty is 27.46 psi.
Using: the wide range pressure instrument channel at pressures ) 752
- psia, the pressure measurement uncertainty is 77.16,psi.
k.
What is the actual initial RTNDT for the reactor vessel flange?
The actual initial RTNDT for 'the reactor vessel flange is -40'F.
What are the calculated values of the adjusted reference temperature for the limiting (controlling) material at the 1/4t and 3/4t locations2 The ad)usted RTNDT for the limiting material is 102'F at 1/4t, and 37'F at 3/4t at EOL.
1.
What are the calculated values of the neutron fluence at the 1/4t and 3/4t locations2 At 1/4t, the neutron fluence is 1.7 x, 101 neutrons/cm at EOL.
At 3/4t, the neutron fluence is 3.6 x 10 neutrons/cm at EOL.
2.
Please confirm the validity of the following values used by the staff in the calculation of the reactor vessel Pressure-Temperature Limits:
a.
Reactor pressure vessel (RPV) inner diameter of 91.125
- inches, outer diameter of 100.1875 inches and thickness of 9.0625 inches.
RPV inner diameter is 182.25
- inches, outer diameter is 200.37
- inches, and the thickness is 9.06 inches (minimum).
Above given values were correct for the vessel radius.
b.
An RPV design pressure of 2500 psia.
RPV design pressure is 2500 psig.
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An RPV operating pressure of 2250 psia.
RPV operating pressure is 2250 psia.
A boltup temperature of 68'F,.
Bolt up temperature is 68'F.
A lowest service temperature of 180'F.
Lowest service temperature is 180'F.
A maximum service pressure of 500 psia.
The maximum service pressure is 500 psia.
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