ML19225C363
| ML19225C363 | |
| Person / Time | |
|---|---|
| Site: | FitzPatrick  |
| Issue date: | 07/11/1979 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Leonard J POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK |
| References | |
| NUDOCS 7907270352 | |
| Download: ML19225C363 (1) | |
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UNITED STATES 7Yc-y he( 3 i, NUCLEAR REGULATORY COMMISSION 5gJ
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,o KING OF PRUSSIA, PENNSYLVANI A 19406 July 11, 1979 Docket No. 50-333 Power Authority of the State of New York James A. FitzPatrick Nuclear Power Plant ATTN:
Mr. J. D. Leonard Resident Manager P. O. Box 41 Lycoming, New York 13093 Gentlec.en:
The enclosed Bulletin No. 79-15 is forwarded to you for action.
A written response is required.
If you desire additional information regarding this matter, please contact this office.
Sincerely,
_._floyce H.
rier Director
Enclosures:
J.
IE Bulletin No. 79-15 w/ Attachments 2.
Listing of IE Bulletins Issued in Last Twcive Months cc w/encls:
George T. Berry, Executive Director P. W. Lyon, Manager - Nuclear Operations A. Klausmann, Director, Quality Assurance M. C. Ccsgrove, Quality Assurance Supervisor J. F. Davis, Chairman, Safety Review Committee V. J. Cassan, Assistant General Counsel G. M. Wilverding, Licensing Supervisar f }'7
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ENCLOSURE 1 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 IE Bulletin No. 79-15 Date:
July 11, 1979 Page 1 of 3 DEEP DRAFT PUMP DEFICIENCIES Description of Circumstances:
On October 20, 1973, Commonwealth Edison Company reported that manufacturing deficiencies had been identified in new high pressure core spray, low pressure core spray, and residual heat removal pumps manufactured by Ingersoll-Rand (I-R)
Company, Cameron Pump Division.
Each of these pumps is a vertical turbine pump with impellers located in bowls in a sump or a self contained barrel.
The motor (prime mover) is located at the highest pui..p elevation to e into acccunt caximum flooding at the site v
or space considerations.
The n. tion is at the lower end of the pump while the discharge head is just below the driver.
Bearings supporting the vertical shaft segments (usually 5 to 10 segments) are either self lubric,ted, force fed (lubricated by fluid being pumped). or oil lubricated and -
itained within their own isolated system.
These pumps are designated as " Deep Draft".
Figures 1&2 show typical outlines of such pumps.
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 pump shaft Bearing showed wear Bearing clearance exceeded reccamended tolerance Coupling thread galled Wear ring clearance out-of-specification Impeller-to-shaft clearanc.e out of specification Cracks found in second-and-third-stage impellers Stuffing box bushings were severely galled m- -
High Pressure Core Spray Pumps (I-R h 1
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September 1972)
DUPLICATE DOCUMENT
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Entire document. previous 1 Bearing clearance exceeded recommi
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Wear ring clearance out-of-specif into system under:
Y entered g
Bearings showed wear
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