ML20062H696
| ML20062H696 | |
| Person / Time | |
|---|---|
| Site: | McGuire  |
| Issue date: | 08/02/1982 |
| From: | Tucker H DUKE POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-SSINS-6820 IEB-82-02, IEB-82-2, NUDOCS 8208160136 | |
| Download: ML20062H696 (4) | |
Text
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DUKE POWER COMSENF STEA31 PItODUCTION DEPT.
GENEltAL OFFICES TELEPHON E; AREA 704 P. o. sox asise 422 SOUTH CHURCH STREET 373 4ott CIIAltLO'ITE, N. C. 25d42 C l l A /. tl k August 2, 1982 Mr. James P. O'Reilly, Regional Administrator U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 Re:
RII: RCD McGuire Nuclear Station Docket No. 50-369
Dear Mr. O'Reilly:
In response to Mr. R. C. DeYoung's letter of June 2, 1982 which transmitted IE Bulletin 82-02, attached is the report required by Action Item 5 providing the information reqitested by Action Item 3.
It should be noted that McGuire Nuclear Station has committed to the provisions of Regulatory Guide 1.65.
I declare under penalty of perjury that the statements set forth herein are true cnd correct to the best of my knowledge.
Very truly yours, oc A$ Z
~
H. B. Tucker, Vice President Nuclear Production PBN/jfw Attachment cc:
Director Division of Reactor Operations Inspection Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.
20555 8208160136 820802 PDR ADOCK 05000369
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e DUKE POWER COMPANY McGUIRE NUCLEAR STATION, UNIT 1 RESPONSE TO IE BULLETIN NO. 82-02 Action Item 3:
NRC Information Notice Nos. 80-27 and 82-06, and similar INPO (Institute of Nuclear Power Operations) correspondence (with recommendations) have been issued in regard to corrosion problems associated with bolts / studs in RCPB closures (INP0/NSAC SER 81-12).
To assist the Nuclear Regulatory Commission in its ongoing review and assessment of the scope of the problem you are asked to provide the following information for closures and connections with-in the scope of this bulletin:
a.
Identify those bolted closures of the RCPB that have experienced leakage, particularly those locations where leakage occurred during the most recent plant operating cycle. Describe the inspections made and corrective measures taken to eliminate the problem. If the leakage was attributed to gasket failure or its design, so indicate.
b.
Identify those closures and connections, if any, where fastener lubri-cants and injection sealant materials have been or are being used and report on plant experience with their application particularly any instances of SCC of fasteners.
Include types and composition of materials used.
Response
3A -- Within the scope of this bulletin, McGuire Unit I has experienced one leak of a bolted closure. This leak occurred at the main flange to bowl. joint on the ID reactor coolant pump. The pump was disassembled, the gasket replaced and the pump reassembled. The cause of this leak-age was attributed to a lack of adequate preload on the main flange bolts. The bolts on the other three pumps were readjusted to assure proper preload.
3B -- No injection sealant materials have been used at McGuire Unit 1 on any l
closure or connection covered by this bulletin. McGuire has not exper-ienced any indication of SCC of any reactor coolant pressure boundary threaded fasteners. However, fastener lubricants are routinely used on reactor coolant pressure boundary fasteners. The attached table lists all closures and connections where fastener lubricants have been i
or are being used. The fastener lubricants that have been or are being used and their compositions are as follows:
Neolube: Graphite in isapropanol.
Never-Seez Pure Nickel Special 165: Nickel base in a petroleum carrier.
r Fel-Pro CSA: Copper and graphite flakes in a petroleum carrier.
l Fel-Pro N-5000:
Nickel and graphite flakes in a petroleum carrier.
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Table (Action Item 3B)
Closure / Connection Lubricant Fastener Material 1.
Reactor Coolant Pumps Main flange.
Fel-Pro N-5000 SA540-B24 A
B #1 Seal Housing Neolube SA193-B7 C #2 Seal Housing Neolube SA193-B7 2.
Steam Generators Primary Manways Fel-Pro N-5000 SA193-B7 See Note 1.
3.
Pressurizer Manway Fel-Pro N-5000 SA193-B7 See Note 2.
4.
Valves (like valves grouped)
A.
1NCl, INC2, INC3 a.
Inlet flange.
Fel-Pro N-5000 or SA193-B7 Never-Seez 165 b.
Body to bonnet.
Fel-Pro N-5000 or SA193-B7 Never-Seez 165 B.
1NI175, 1NI176, 1 nil 80, IN1181, 1 nil 26, 1NI134, 1 nil 57, INF160 Boby to bonnett Fel-Pro N-5000 or SA453-660 Cond. A Never-Seez 165 C.
1 nil 25, 1NI129
' Body to bonnet Fel-Pro N-5000 or SA453-660 Cond. A Never-Seez 165 D.
INI250, 1NI251, 1NI252, 1N1253, Body to bonnet Fel-Pro N-5000 or SA453-660 Never Seez 165 E.,
1NI59, 1NI60, 1NI70, 1NI71, 1NI81, 1NI82, 1NI93, 1NI94 Body to bonnet Fel-Pro N-5000 or SA453-660 Cond. A Never Seez 165 F.
1NI248, 1NI249, Body to Bonnet Fel-Pro N-5000 or SA453-660 Never-Seez 165
G.
INI54, 1NI65 INI76, 1NI88 Packing studs Fel-Pro N-5000 or SA453-660 Never-Seez 165 11.
INDl, IND2, Packing studs Fel-Pro N-5000 or SA453-660 Never-Seez 165 5.
Piping Connections A.
Gray-loc connection 8" Neolube SA453-660 B.
Gray-loc connection 5" Neolube SA453-660 Note #1: Originally Fel-Pro CSA was used on these joints. Westinghouse specifications were changed to require use of Fel-Pro N-5000.
All of these joints now have Fel-Pro N-5000 on them.
Note #2: Although Fel-Pro N-5000 is now specified for use on this joint it is suspected that Fel-Pro CSA is now present on the bolts since the joint was completed prior to the revision by Westinghouse to F61-Pro N-5000.
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