ML20035F150
| ML20035F150 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 04/14/1993 |
| From: | Stolz J Office of Nuclear Reactor Regulation |
| To: | Opeka J CONNECTICUT YANKEE ATOMIC POWER CO., NORTHEAST NUCLEAR ENERGY CO. |
| Shared Package | |
| ML20035F151 | List: |
| References | |
| TAC-M85875, NUDOCS 9304200330 | |
| Download: ML20035F150 (4) | |
Text
.
l"y pwh
{
i i
ga%
f Q
V UNITED STATES
]
3.!^
j NUCLEAR REGULATORY COMMISSION
- g y
WASHINGTON. Q.C. 20555-0001
%,,..... f April 14, 1993 v
1 Docket No. 50-336 l
l l
Mr. John F. Opeka i
Executive Vice President, Nuclear Connecticut Yankee Atomic Power Company Northeast Nuclear Energy Company j
l Post Office Box 270 l
Hartford, Connecticut 06141-0270
Dear Mr. Opeka:
l
SUBJECT:
MILLSTONE NUCLEAR POWER STATION, UNIT 2 - PURSUANT TO l
10 CFR 50.55a(a)(3)(ii), APPROVAL TO USE AN ALTERNATIVE METHOD OF COMPLIANCE WITH THE REQUIREMENTS OF 10 CFR 50.55a(g)(4),
STRUCTURAL INTEGRITY OF'A CLASS 3 COMPONENT (TAC NO. M85875).
By letter dated March 26, 1993, Northeast Nuclear Energy Company (NNECO) l submitted to the NRC a Request for Enforcement Discretion in regard to meeting i
the requirements of Millstone Unit 2 Technical Specification (TS) 3.4.10, The Reactor Coolant System - Structural Integrity Limiting Condition of Operation, i
and a request for approval for use of an alternative method, pursuant to 10 CFR 50.55a(a)(3)(ii), cf compliance with the requirements of 10 CFR 50.55a(g)(4). Technical Specification 3.4.10 and 10 CFR 50.55a(g)(4) both require that ASME Code Class 1, 2, and 3 structures, systems and components meet the inservice testing and structural integrity requirements of ASME Code i
Section XI during the service life of the plant. The Request for Enforcement Discretion and the request of approval to use an alternative method of compliance with the structural integrity requirements of ASME Code Section XI 1
of a ASME Code Class 3 component was submitted after your staff had discovered earlier, on January 25, 1993, that a socket weld in service water component l
2"-HUD-130 had displayed signs of weeping during performance of a hydrostatic l
test. This component supplies cooling water to Cooling Coils X-181A and X-i i
1818 in the West 480 Volt AC Vital Switchgear Room. The hydrostatic test was performed after your staff had returned the unit to full power and had phased the unit to the grid on January 13, 1993.
Enforcement Discretion for Millstone, Unit 2, Technical Specification 3.4.10 regarding the stuctural integrity of the service water supply line to the 480 Volt Vital AC Switchgear Room was granted by letter dated March 26, 1993.
We have reviewed and evaluated the request of use of the alternative program for compliance with the ASME Code,Section XI and supporting information.
Based on the information submitted and pursuant to 10 CFR 50.55a(a)(3)(ii), we l
m a r O q +S ;TL # g ]Uy 9304200330 930414 sh hh
- d*"
l PDR ADOCK 0500 336 g
y e
3 Mr. John F. Opeka hereby authorize use of your proposed alternative program for monitoring leakage and integrity of component 2"-HUD-130.
The approval of this alternative in no way relieves NNEC0 from complying with 10 CFR 50.55a(g)(4),
which requires ASME Code Class 1, 2, and 3 components to meet the inservice l
testing and structural integrity requirements of ASME Code Section XI, after a shutdown of sufficient duration of 10 days or more to affect a Code repair / replacement of component 2"-HUD-130.
A copy of the related Safety Evaluation is enclosed.
Sincerely, Original signed by John F. Stolz, Director Project Directorate I-4 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
Enclosure:
Safety Evaluation cc w/ enclosure:
See next page Distribution:
Docket File NRC & Local PDRs PD I-4 Plant SVarga JCalvo SNorris GVissing OGC ACRS (10)
DHagan GHill (2)
Wanda Jones JStrosnider RHermann GHornseth LTDoerflein, RI JMedoff
- see previous concurrence DF Ha LA:PDI-4 PM:PDLc4 -
D:EDI;-4 OGC*
i JStoYz--
EHoller
$}t3W G$,y{"s g:cn WE
/J//#/93 f //y/93 tl/I4f93 4/8/93
/ /
f DATE OFFICIAL RECORD COPY Document Name: G:\\VISSING\\M85875. APP l
~
-t l
Mr. John F. Opeka i hereby authorize use of your proposed alternative program for monitoring i
leakage and integrity of component 2"-HUD-130. The approval of this alternative in no way-relieves NNECO from complying with 10 CFR 50.S5a(g)(4),
l which requires ASME Code Class 1, 2, and 3 components to meet the inservice testing and structural integrity requirements of ASME Code Section XI, after a shutdown of sufficient duration of 10 days or more to affect a Code repair / replacement of component 2"-HUD-130.
i A copy of the related Safety Evaluation is enclosed.
Sincerely, John. Stolz, Director.
Pro' ct Directorate I-4 ision of Reactor Projects - I/II Office of Nuclear Reactor Regulation l
Enclosure:
Safety Evaluation j
cc w/ enclosure:
See next page i
t a
4
~
l' i
i Mr. John F. Opeka Millstone Nuclear Power Station Northeast Nuclear Energy Company Unit 2 i
cc:
i i
Gerald Garfield, Esquire R. M. Kacich, Director Day, Berry and Howard Nuclear Licensing Counselors at Law-Northeast Utilities Service Company l
City Place Post Office Box 270 Hartford, Connecticut 06103-3499 Hartford, Connecticut 06141-0270 i
)
W. D. Romberg, Vice President D. O. Nordquist i
Nuclear, Operations Services Director of Quality Services Northeast Utilities Service Company Northeast Utilities Service Company Post Office Box 270 Post Office Box 270 Hartford, Connecticut 06141-0270 Hartford, Connecticut 06141-0270 j
Kevin McCarthy, Director Regional Administrator I
Radiation Control Unit Region I l
Department of Environmental Protection U.S. Nuclear Regulatory Commission State Office Building 475 Allendale Road l
Hartford, Connecticut 06106 King of Prussia, Pennsylvania 19406 Allan Johanson, Assistant Director First Selectmen i
Office of Policy and Development Town of Waterford l
Policy Development and Planning Division Hall of Records 80 Washington Street 200 Boston Post Road Hartford, Connecticut 06106
- Waterford, Connecticut 06385 S. E. Scace, Vice President P. D. Swetland, Resident Inspector Millstone Nuclear Power Station Millstone Nuclear Power Station i
Northeast Nuclear. Energy Company c/o U.S. Nuclear Regulatory Commission Post Office Box 128 Post Office Box 513 Waterford, Connecticut 06385 Niantic, Connecticut 06357 J. S. Keenan, Nuclear Unit Director Charles Brinkman, Manager Millstone Unit No. 2 Washington Nuclear Operations Northeast Nuclear Energy Company ABB Combustion Engineering l
Post Office Box 128 Nuclear Power i
Waterford, Connecticut 06385 12300 Twinbrook Pkwy, Suite 330 Nicholas S. Reynolds Winston & Strawn l
1400 L Street, NW Washington, DC 20005-3502 1
l l
l
__