ML20058K714

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Ler:On 750214,discovered That Stiffener Tack Welded to Hinge Arm of HPCI Exhaust Line Check Valve W/O Proper Engineering Analysis & Safety Review Being Performed
ML20058K714
Person / Time
Site: Monticello 
Issue date: 02/24/1975
From: Mayer L, Nolan L
NORTHERN STATES POWER CO.
To: Anthony Giambusso
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
LER-LER-750224, NUDOCS 9102130532
Download: ML20058K714 (2)


Text

LICENSEE EVENT REPORT CONTAOL BLOCK l l

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(pLEASE PRINT LL REQUIRED INFORMATION) 1 L

tiCf N5ff NAME LIC(NSe NUMBER i fCl NSE fVINT lM N M N !P l1d l0 l0 }-l 0l 0l0 l0 l0 l-l 0 l 0 l l4 l 1 l 1 l 1 l 1]l0l1l T YPE YvPE 7 89 14 1b PB EE 30 31 32 5.r pC r.-

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!O l2 l 214 17j j 7 8 57 66 59 60 G1 68 69 74 75 BO EVENT DESCRIPTION gg [ Siffener tack welded to hinge am of HPCI exhaust 89 line check valve, HPCI-9, with-l 7

@ l out proper engineering anaivsis and safety review being performed.

80 7 89 Valve disassembled l

@ land inspected.

60 Dve penetrant inspection revealed no indications.

Hince am to be l

7 89 81 m- #

60 Maintenance versonnel to receive training on I

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@9l administrative directive requirements (A0 263/75-6).

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80 CODE COOf CoMPON[NT CfM ONFU COMPONENT CODE Suswim MANurACTurun votATom

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lA l lA b l 9l 5l lY l 7 89 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION

@ l Lack of understanding of Administrative Directives by personnel involved.

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? H9 16 inch-l 3E l 150 psi swing check valve, Anchor Valve Company Dwg. No.

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89 2374-5. Maintenance 7ersonne[

7 1O l to receive traininc en Administ rative recuirements.

80 7 89 Hince am to be replaced.

l rAc tit y utisOp os 80 STATUS

% POW E A O'Hin STATUS D$ COVE nv CISCOVI PV DE SCRP16DN h

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FOkM OF ACTivlT Y CON 1E NT 60 d

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l NA AMDUNT OF ACTVTY LDCAf TON DF A(.L E ASE 7 8 9

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44 45 PEREONNEL EXPOSURES 80 NUMtJIH TYP!

DE SCRIPTION M in lo I nl l;_J l NA 7 89 11 12 13 l

PERSONNEL INJUR!ES 80 NUMBfA Of SCNP? fDN h l0 l 0l d l NA 7 89 11 12 l

OFFSITE CONSEQUENCES 80 1

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LOSS OR DAMAGE

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PUBLICIT Y 80

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ADDITIONAL FACTORS 80 Q l NA 7 D9 910L130532 750224 l

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NAME:-

L. L. Nolan. Encineer 80 PHONE 612/295-5151 vo een.en 0

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MSED NORTHERN STATES POWER COMPANY

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u s N N E A PO U S. M O N N E SOTA 5 S 4 01 February 24, 1975 3

Mr. A. Giambusso, Director Divis on of Reactor Licensing U. S. Nuclear Regulatory Commission

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Washington, D.C.

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Dear Mr. Giambusso:

MONTICELLO NUCLEAR GENERATING PLANT Docket No. 5G-263 License No. DPR-22 Licensee Event Reporr to the NRC Component Modification Without Prior Saferv Review The Licensee Event Report for this occurrence is reproduced on the back of this letter.

Yours very truly, h-W

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L 0 Mayer, PE Manager of Nuclear Support Services Lax /DMM/yb cc: J G Keppler

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G Charaoff

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Minnesota Pollution Control Agency hv v Attn:

E A Pryzina

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