ML19220D068
| ML19220D068 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 01/11/1978 |
| From: | Herbein J Metropolitan Edison Co |
| To: | Grier B NRC Office of Inspection & Enforcement (IE Region I) |
| References | |
| NUDOCS 7905160467 | |
| Download: ML19220D068 (3) | |
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PCST OFFICE BOX 512 REACING, PENNSYLVANI A 19603 TELEPHONE 215 - 929 ,601 January '.1,1978 GO.L C030 4.-
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Mr. 3. J. Grier, Directar
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U. S. Huclear Regulatcry Ccnmissic:
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Office of Inspecticn and Enforcement q.
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'"hree Mile Island Nuclear Station Unit 2 (':~C-2)
License No. C??R-co Dceket No. 50-320 3uilding Spray ?=p Head Curves Cn Ceteber 20, 1977, Mr. J. Durr of your office was verbally notified of a situatica which Metropolitan Idisen Ocepany eccsidered to be reportable in accordance with the requirements cf ICCFR50.55(e).
21s letter constitutes the final respense indicated in cur letter {00J1689) of December 7,1977 Description On August 22, 1977, lh. L. Narrow cf ycur office was verbally notified that the CC-2 Euilding Spray Systen pu=p "3" did nct =eet the pu=p head curve supplied by the vender, 3
's '4 Canada, 2nd that the "A" pump had not been tested in the field to date because its noter was offsite being repaired.
3cth pumps vere disassemb'~'
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~~ *ing ele =ents vere returned to the vend:r for evaluaticn = A ~ esting.
After retesting by the vendor, a new set of head curves vere provided to the site. Although these perf==ance curves indicated that the pu ps develoeed sufficient head to satisfy systen requirements, a review cf the 'iata by Burns and Roe identified an additicnal proble area. The Reacter Building Spray Pu=ps have a higher require 1 :TPSH than the systen available :TFSH during systen runcut conditices.
Se :i?SH deficit is approximately three (3) feet at the nest severe ccndition.
Analysis of Safety I nlicaticns n.O a
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u If the pu ps vere to cperate at a total head reduced by greater thar. 3f, due to cavitation, they night not be able to operate fer a long encugh period after a loss of ecclant accident and thereby result in a site boundary dose in excess of 1CCFR100 limits. Ecvever, due to the thercughness of the
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REGULATORY INFORMATICN DISTRIBUTION SYSTEM (RIDS)
DISTRIGUTION FOR INCOMING MATERIAL 50-320 REC: GRIER G J ORG: HEREEIN J G DOCDATE- 01/11/79 NRC METROPOL EDISON DATE RCVD: 01/23/79 DOCTYPE: LETTER NOTARIZED: NO COPIES RECEIVED
SUBJECT:
LTR 0 ENCL 0 FINAL RESPONSE RE TMI-2 ELDG SPRAY SYSTEM PUMP "B"
DID NOT MEET THE PUMP HEA CURVE SUPPLIED BY THE VENDOR, B & W CANADA, AND THE "A"
PUMP HAD NOT GEEN TESTED IN THE FIELD TO DATE BECAUSE ITS MOTOR WAS OFFSITE EEING REPAIRED.
OCCURING ON OS/22./77.
PLANT NAME: THREE MILE ISLAND - UNIT 2 REVIEWER INITIAL:
XJM DISTRIBUTOR INITIAL:
+++*****+++++++** DISTRIBUTION CF THIS MATERIAL IS AS FOLLOWS *****************+
NOTES:
1.
SEND AMENDMENTS ONLY TO WETMORE CONSTRUCTION DEFICIENCY REPORT (10CFR50.55(E).
(DISTRIBU'iION CODE B004)
FOR ACTION:
ASSISTANT DIRECTOR **LTR ONLY(1) GRANCH CHIEF VARGA**LTR ONLY(li PROJ MGR H.
c CR**LTR ONLY(1) LIC ASST SERVICE **LTR ONLY(1)
INTERNAL:
- LTR ON NRC PDR*4LTR ONLY(1)
I & t*M. i n C. % i. '..
OELD**LTR ONLY(1)
GGOSSICK & STAFF **LTR ONLY(1)
MIPC++LTR ONLY(1)
BOYD**LTR ONLY(1)
DEYOUNG**LTR ONLY(1)
HELTEMES**LTR ONLY(1)
R.
MATTSON**LTR ONLY(1)
KNIGHT **LTR ONLY(1)
ROS$*+LTR ONLY(1)
TEDESCO*+LTR ONLY(1)
EISENHUT**LTR ONLY(1)
STANDARDS DEV.**LTR ONLY(1)
EXTERNAL:
LPDR'S HARRISEURG, PA**LTR ONLY(1)
TIC **LTR ONLY(1)
NSIC**LTR ONLY(1)
ACRS CAT G**LTR ONLY(16) rp
}20 nUJJ DISTRIBUTION:
LTR 39 ENCL 0 CONTROL NBR:
780240029 SIZE: 2P
- ++++++++++++++++++++++++++++++++
THE END
- ++++*********+++**********+++++
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Y. 3. H. Grier, Director January 11, 1977 GQL 0030 Startup and "est Fregram which.equires that pun; head e rves be developed at the site, this cenditien veuld net have gene undetected and therefere there is no adverse effect en the health or safety of the public or unit staff.
Corrective Action Sfsce cur Dece=ber 7, 1977 letter, two =eetings have been held with =e=bers of your staff in which the analysis and corrective action vere discussed.
Justificatics vill be provided for operatien of the syste='s pu=ps at ex-pected cenditions with possible operater acticn being required sc=eti=e into the accident to **
+'a ~ ~ -ut flew to a value which vill provide adequate Ir?SH for icng ter: pu=p cperation.
"he FSAR vill be revised accordingly and dec -a-'-- vill be available for your review prior to fuel lead.
Very truly yours,
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o J. G. Herbein Vice President JGH:JES:cjg cc:
Dr. Ernst '7cigenau, Director Office of Inspection and Enforce =ent U. S. Nu 'aa- "agulatory Cennission
'Jashingten, D. C. 20555 ee b
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