ML20203F393
| ML20203F393 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| Issue date: | 12/11/1997 |
| From: | Kelly G NRC (Affiliation Not Assigned) |
| To: | Leslie Liu IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT |
| References | |
| TAC-M98274, NUDOCS 9712170367 | |
| Download: ML20203F393 (4) | |
Text
.
December 11, 1997 Mr. Lee Uu Chairman of the erard and Chief Executive Officer IES Utilit:as Inc.
200 First Street, SE.
P.O. Box 351 Cedar Rapids, IA 52406-0351
SUBJECT:
DUANE ARNOLD ENERGY CENTER (DAEC)- REQUEST FOR INFORMATION ON HIGH-PRESSURE COOLANT INJECTION (HPCI) TURBINE OPERABILITY DETERMINATION (TAC NO M98274)
Dear Mr. Uu:
The staff is rsviewing the operability determination made by DAEC on December 22, 1995, regarding the HPCI system. The staff requires additionalinformation in order to complete its review. The enclosed questions are specific to the licensee document " Detailed Operability Evaluation of the HPCI Turbine Exhaust Pipe During Conditions with Water Trapped in Horizontal Run," dated May 1,1996, and HPCI System Modification, ECP 1575. Please provide your response within 90 days so that the NRC can complete its review promptly, if you have any questions about our review, please contact me at (301) 415-3028.
Sincerely,
)
Original signed by:
gIch Glenn B. Kelly, Senior Project Manager Project Directorate 111-3 Division of Reactor Projects lil/IV Office of Nuclear Reactor Regulation J
Docket No. 50-331
Enclosure:
RAI cc w encl: See next page Distribution w/ encl:
EAdensam (EGA1)
GGrant, Rlli Docket File RSavio PDill 3 R/F CBoyle PUBLIC GKelly OGC ACRS G:\\DUANEARN\\98274ral.WPD OFFICE PM:PDlll-3
_. l E PM:PDul-3 j LA:PDill-3 lE NAME GKelly X1R-Pray Ar/4, CBoyle 00 /g DATE 12//l/97" 12////97 f 12/11/97 U V OFFICIAL RECORD COPY
.m...
MC MECEMBfimpy i
' 4' illI!.llll1ll]IlJilli
~
l 9712170367 971211 PDR ADOCK 05000331 L
P PDR
December 11, 1997 Mr. Lee Liu Chairman of the Board 2
and Chie' Executive Officer IES Utilities Inc.
200 First Street, SE.
P.O. Box 351 Cedar Rapids, lA 52406 0351
SUBJECT:
DUANE ARNOLD ENERGY CENTER (DAEC)- REQUEST FOR INFORMATION ON H'GH PRESSURE COOLANT INJECTION (HPCI) TURBINE OPERABILITY DETERMINATION (TAC NO. M98274)
Dear Mr. Liu:
The staff is toviewing the operability determination made by DAEC on December 22, 1995, regarding the HPCI system. The staff requires additionalinformation in order to complete its review. The enclosed questions are specific to the licensee document
- Detailed Operability Evaluation of the HPCI Turbine Exhaust Pipe During Conditions with Water Trapped in Horizontal Run," dated May 1,1996, and HPCI System Modification, ECP 1575. Please provide your response within 90 days so that the NRC can complete its review promptly. If you have any questions about our review, please contact me at (301) 415-3028.
Sincerely, Original signed by:
Glenn B. Kelly, Senior Project Manage;'
Project Directorate lll 3 Division of Reactor Projects lil/IV Office of Nuclear Reactor Regulation Docket No. 50 331
Enclosure:
RAI cc w encl: See next page Distribution w/ encl:
EAdensam (EGA1)
GGrant, Rlli Docket File RSavio PDill 3 R/F CBoyle PUBLIC GKelly OGC ACRS G:\\DUANEARN\\98274ral.WPD OFFICE PM:PDill-)
.lE PM:PDlll-3 ]
LA:PDill-3 1E NAME GKelly XR Pray f) h CBoyle 00 /.c DATE 12//l/97 "
12/# /97 f 12/11197 U V OFFICIAL RECORD COPY i
l
...~.
l i
'i Lee Liu Duane Amold Energy Center j
IES Uti'ities Inc.
oc:
Jack Newmen, Esquire Kathleen H. Shea, Esquire -
Morgan, Lewis, & Bocklus 1800 M Street, NW..
Washington, DC 20036 5869 l
l Chairman, Linn County Board of Supervisors Cedar Rapids,IA 52406 i
lES Utilities Inc.
ATTN: Gary Van Middlesworth Plant Superintendent, Nuclear 3277 DAEC hoad l
Palo, IA 52324 i
John F. Fraru, Jr.
Vice President, Nuclear i
i Duane Amold Energy Center 3277 DAEC Road Palo,lA 52324 Ken Povoler Manager of Regulatory Performance Duane Arnold Energy Center 3277 DAEC Road Palo, lA 52324 t
U.S. Nuclear Regulatory Commission Resident inspector's Office Rural Route #1 Palo, IA 52324 Regional Administrator, Rlli U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, IL 60532-4531 Parween Belg
' Utilities Division -
lows Department of Commerce Lucas Office Building,5th floor:
Des Moines, IA 50319 6
i
, - +. L.. a
,,.-,,,:-,,,.,-....-.,...,:..--..-.,.....-.,.,, - - - ~... ~ -.... -.
.=_.
NRC REQUEST FOR ADDITIONAL INFORMATION POTENTIAL FOR WATERHAMMER IN THE HPCI SYSTEM DUANE ARNOLD ENERGY CENTER The fo? lowing request refers to calculation number CAL-M96 010,
- Relocation of Valve V22-0016 next to V22-0017":
1.
The qualification of the modified high-pressure coolant injection (HPCI) turbine exhaust '
piping system includes the following reduction factors applied to the Mark i loads: 0.5 for SRV loading,0.7 for CO loading and 0.65 for CHUG loading. These factors are supposed to account for overconservatism in the Mark i load calculations. Provide the basis for these reduction factors, or provide NRC documentation indicating review and acceptance of these factors.
2.
The qualification of the modified HPCI turbine exhaust pipl./; system includes an amplification factor of 1.18 applied to the Mark Iloads. This is based on the ratio of the moments in the modified and the original piping configurations. The highest ratio in Appendix lli is shown to be 1.27. Provide the basis for using an amplification factor of 1.18 instead of 1.27 as a conservative bounding value.
3.
Provide the stress interaction factors for the modified HPCI turbine exhaust system based on the Mark l loads without the reduction factors, and the highest ratio of 1.27, as shown in Appendix lit.
4.
The Turbine Nonle evaluation does not include Mark i loading in the loading combinations because *the turbine noule is found to be in the region beyond the 10%
cut off point.* Provide the basis and detailed justification of this statement.
5.
Reference 63 is the ASME Boller and Pressure Vessel Code, Division 1,1995 Edition.
This edition has not been endorsed by the staff. Indicate where th;a reference was used and the licensing basis for using it.
Enclosure i
l l
l l
-.