ML20086H017
| ML20086H017 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 02/18/1975 |
| From: | Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20086H015 | List: |
| References | |
| AO-75-12, NUDOCS 8401130252 | |
| Download: ML20086H017 (1) | |
Text
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PlE/)SS DE/./VEka Flf LLADELPHIA ELECTRIC COMPAID'
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Peach Bottom Atomic Power Station N8 MM O/NM Delta, Pennsylvanta e
17314 February 18, 1975 Hr. Jacca P. O'Reilly, Director Office of Inspection and Enforcement Region 1 United Staten Nuclear Regulatory Coeniscion 631 Park Avenue King of Trussia, Pennsylvania 19406 s:ab_1ece t Abnornst occurrenea 24-IInu_r Notif_icotfon m., f.
Confirming W. T. U11 rich's phone conversation with Mr. Walt Baunack, Region 1
-gg United States Mucicar Reguintory Cor tanian en February 14, 1975.
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Reference:
License Kir.ber DPR-56 E ' ; -/.'
Technical Specification
Reference:
3.5.C.1 rs$. 2.-
Report No.:
50-276-75-12
$-kV Report Date:
February 14, 1975 MW Occurrence Date:
February 14, 1975
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Facility:
Peach Botton Atocic Power Station
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R.D. 1. Delta, Pennsylvania 17314 Identification of Occurrence:
Failure of the 11PCI 5tean Supply Line Drain System to properly drain.
Octaditions failure to Occurrence:
Unic 3 at approximately 100* power.
Description of Occurrence:
Investigation, initiated when covecent of the HPCI steam nupply line van noted, revealed that the stecn supply line drain pot was not draining through the outlet stean, trop nor had the drain pot high Iceci switch, LS-3-23-90, actuated to open the e. team crap bypass valve, allowing accumulation of water in the steam supply
- line, Designation of Apparent Cause of Occurrence:
Failero of the stean trap to drain and failure of the drain pot level switch to trip on high Icvel.
Analysis of Occurrence:
At the tice the accu:.ulation of water was diccovered, the reactor was operating at stendy a: ate conditione with no operational or surveillance requirements to run tbs UNI systen.
In tho event the UFCI was autorutically actusted cnd it was necesr.ary to nhut the UPCI down, the RCIC and ADS syrtens were available for high pressure conditions. Safety icplications cro minical.
.,.g Corrective Ac. tion:
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N The ster n trap bypnse valve van opened f rom the control switch to drain the stene 7
supply line. The vcive was Icfc in the open ponition until repairs on thu stean "5
trap and the IcVel avitch could be acconplished.
Failure Data:
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W y truly yours,
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U. T. Ullrich, Superintendent Poach DotCom Aconic Power Section
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B401130252 750224 PDR ADOCK 05000278 S
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