ML19242A146
| ML19242A146 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 07/11/1979 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Stewart W FLORIDA POWER CORP. |
| References | |
| NUDOCS 7907310378 | |
| Download: ML19242A146 (2) | |
Text
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'o UNITED STATES l'
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'e NUCLEAR REGUL ATORY COMMISSION
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E REGION 11 o, *
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.f 101 M ARIETT A ST, N W, SUIT E 3100 AT L ANT A, GE oRGI A 30303 e
JUL 111979 In Reply Refer To:
RII:JP0 50-302 Florida Power Corporation ATTN:
W. P. Stewart, Director Nuclear Operations P. O. Box 14042, Mail Stop C-4 St. Petersburg, FL 33733 Gentlemen:
A written The enclosed Bulletin No. 79-15 is forwarded to you for action.
response is required.
If you desire additional information regarding this matter, p3:ase contact this office.
Sincerely,
~%W m
k James P. O'Reilly Director
Enclosures:
1.
Listing of IE Bulletins Issued in Last 12 Months
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JUL 111979 Florida Power Corporatioti -
cc w/ encl:
G. P. Beatty, Jr.
Nuclear Plant Superintendent Post Office Box 1228 Crystal River, Florida 32629 f
UNITED STATES h"JCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND EhTORCEMENT WASHINGTON, D.C.
20555 July ll, 1973 IE Bulletin No. 79-15 DEEP DRAFT PUMP DEFICIENCIES Description of Circumstances:
manufacturing On October 20, 1978, Commonwealth Edison Company reported that deficiencies had been identified in new high pressure core spray, low pressure core spray, and residual heat removal pumps manuf actured by Ingersoll-Rand (I-R)
Cocpany, Cameron Pu=p Division.
Each of these punps is a vertical turbine pu=p with impellers located in bowls in a su=p or a self contained barrel.
The motor (prime mover) is located at the highest pu=p elevation to take into account maximu= flooding at the site The suction is at the lover end of the pu=p while or space considerations.
Bearings supporting the vertical the discharge head is just below the driver.
shaft segments (usually 5 to 10 segments) are either self lubricated, force within fed (lubricated by fluid being pu= ped), or oil lubricated and maintainti These pumps are designated as " Deep Draft".
Figures their own isolated syste=.
162 show typical outlines of such pu=ps.
The internal deficiencies, identified through dimensional and visual inspections were as follows:
Low Pressure Core Spray Pumps (I-R Model No. 29APKD-5) (Date of Manufacture -
Feburary 1973)
Loose impeller bolts and bolts improperly staked Loose key - keyway fit Excessive runout on pu=p shaft Bearing showed wear Bearing clearance exceeded recommended tolerance Coupling thread galled Wear ring clearance out-of-specification Impeller-to-shaft clearance out of specification Cracks found in second-and-tW A-g e impellers Stuffing box bushings were s
. lEUPLICATE DOCUMENT-t High Pressure Core Spray Pumps September 1972) l Entire document i
1nto system under*
Sly entered l)
Bearing clearance exceeded 1 li ANO Vear ring clearance out-of-Bearings showed wear f
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