ML19242A148
| ML19242A148 | |
| Person / Time | |
|---|---|
| Site: | Hatch, Vogtle  |
| Issue date: | 07/11/1979 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | John Miller GEORGIA POWER CO. |
| References | |
| NUDOCS 7907310383 | |
| Download: ML19242A148 (1) | |
Text
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'o, NUCLEAR REGULATORY COMMISSION
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REGION 11 E
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ios uanitTT A st. N W. SUITE 3100 d',
f ATL ANT A.ctonci A 3o3o3 g s,.....f JUL 111979 In Reply Refer To:
RII:JPg (50-321N.
50-424~~}
50-366
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50-425 Georgia Power Company ATTN:
J. H. Miller, Jr.
Executive Vice President 270 Peachtree Street Atlanta, GA 30303 Gentlemen:
A written 79-15 is f orwarded to you f or acticsn.
The enclosed Bulletin No.
If you desire additional inforr_ation regarding this response is required.
matter, please contact this office.
Sincerely,
'CDb t,
James P. O'Reilly Director
Enclosures:
1.
Listing of IE Bulletins Issued in Last 12 Honths
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. Georgia Power Company cc w/ encl:
M. Manry, Plant Manager Post Office Box 442 Baxley, Georgia 31513 C. E. Belflower Site QA Supervisor Post Of fire Box 442 Baxley, Georgia 31513 K. M. Gillespie Construction Project Manager Post Office Box 282 Waynesboro, Georgia 30830 E. D. Groover QA Site Supervisor Post Office Box 282 Waynesboro, Georgia 30830 3 7 r,3 l'y i:
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UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 July 11, 1979
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IE Bulletin No. 79-15 DEEP DRAFI PUMP DEFICIENCIES Description of Circu= stances:
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Co==onwealth Edison Co=pany reported that manu actur ng deficiencies had been identified in new high pressure core spray, low press On October 20, 1978 d (I-R) core spray, and residual heat re= oval pu=ps manuf actured by Ingersoll-Co=pany, Cameron Pu=p Division.
bowls Each of these pu=ps is a vertical turbine pu=p with impellers located in a su=p or a self contained barrel.
pu=p elevation to take into account maximu= flocd'.ng at the site The suction is at the lower end of the pu=p while the highest yearings supporting the vertical or space considerations.
the discharge head is just below the dri'.er, segments (usually 5 to 10 segments) are either self lubricated, force fed (lubricated by fluid being pu= ped), or oil lubricated and maintained shaft Figures These pu=ps are designated as " Deep Draft".
their own isolated syste=.
162 show typical outlines of such pu=ps.
i The internal deficiencies, identified tnrough dimensional and visual inspec were as follows:
lov Pressure Core Spray Pu=ps (1-R Hodel No. 29APKI)-5) (Date of Man 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 recocnended tolerance Coupling thread galled Wear ring clearance out-of-specification I=peller-to-ahaft clearance out of specification Cracks found in second-and-third-staEe impellers Stuf fing box bushings were si 7*-
'%b-ATE DOCUMENT Bigh Pressure Core Spray Pumps
? Entire document vi sly entered 5eptember 1972) into system under Bearing clearance tacteded I ANO 7 h
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g Wear ring clearance out-of-s i
Saarings showed waar NO-of pages:
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