ML20100K900
| ML20100K900 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 03/08/1985 |
| From: | Cutter A CAROLINA POWER & LIGHT CO. |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| IEB-82-02, IEB-82-2, NLS-85-073, NLS-85-73, NUDOCS 8504160124 | |
| Download: ML20100K900 (2) | |
Text
.
~..
cpgL 2
Carolina Power & Light Company SERIAL: NLS-85-073 g g g P ?.Y Dr. J. Nelson Grace, Regional Administrator United States Nuclear Regulatory Commission Suite 2900 101 Marietta Street, NW Atlanta, GA 30303 H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2 DOCKET NO.' 50-261/ LICENSE NO. DPR-23 RESPONSE TO IE_ BULLETIN 82-02, ITEM 4
Dear Dr. Grace:
Carolina Power & Light Company (CP&L) has implemented the requirements of IE Bulletin 82-02 " Degradation of Threaded Fasteners in the Reactor Coolant Pressure 4
Boundary of PWR Plants". As required by the bulletin, CP&L is providing the following information relative to H. B. Robinson for Action item 4.
A.
The following procedures include the requirements for threaded fasteners:
1.
FHP-015 Reactor Vessel Stud Reraoval and Replacement 2.
PHP-036 Refueling Outage Operation 3.
CM-001 Reactor Coolant Pump Seal Assembly Maintenance
-4.
CM-013 Reactor Coolant Pump Disassembly and Reassembly of Pump 5.
CM-109 Repair Procedures for RHR Valve 750 and 751 6.
CM-120 Swing Check Valve Maintenance 7.
CM-207 Removal and Reinstallation of the Steam Generator Closure Covers primary manway, secondary manway, hand holes, and inspection port) 8.
CM-209 Removal and Reinstallation of the Pressurizer Manway Covers Lubrication requirements and QA hold points were included in the above Correctivr. Maintenance (CM) procedures.
B.
During the Steam Generator Replacement Outage that ended on January 8,1985, N
' the reactor coolant pump seal housing bolts and reactor vessel head bolts were removed and examined.
C.
Approved procedures were used for the inspection of these bolts. These procedures contained QA hold points to ensure the required inspections were completed. These inspections did not identify corrosion problems as discussed in the IE Bulletin 82-02.
It should be noted that the steam generators were replaced and new bolts were installed in the primary system manways. Therefore, the steam generator primary system manway botting was not included in this inspection effort.
hoohhh j '
PDR l
411 Fayetteville Street
- P. o Box 15$1
- naleigh. N C. 27602 g g f6H
T' Dr. 3. Nelson Grace Page 2 In summary, there have been no identified corrosion problems associated with bolts or studs in reactor coolant pressure boundary closures within the scope of IE Bulletin 82-02. There have also been no instances of stress corrosion cracking of threaded fasteners associated with lubricants or injection sealants.
As requested, the staff time spent in the research and preparation of this response is apporximately an additional 100 man-hours.
If you have any questions concerning this response, please contact Mr. David C. Stadler at (803) 383-4524, extension 363.
Yours very r y, 4
A. B. Cutter - Vice President Nuclear Engineering & Licensing CW/pgp (12213SK) cc:
Dr. 3. Nelson Grace (NRC-RII)
Mr. G. Requa (NRC)
Mr. H. Krug (NRC Resident Inspector - RNP)
A. B. Cutter, having been first duly sworn, did depose and say that the information contained herein is true and correct to the best of his information, knowledge and belief; and the sources of his information are of ficers, employees, contractors, and agents of Carolina Power & Light Company.
sa)
L OLfS My commission expires: J/ffff8 8..
n0TAgy s
l Y N.........6 t!
..,