ML20062C551

/04T-0 on 781025:improper Appl of Brook Model 9456 Oval Gear Flowmeter Combined W/Failed Seal on Caustic Addition Pump Caused High Concentration of Sodium & Sulfate & Degraded Capability to Control Rate of Discharge

ML20062C551
Person / Time
Site:	Nine Mile Point
Issue date:	11/02/1978
From:	Macvittie D NIAGARA MOHAWK POWER CORP.
To:
Shared Package
ML17053A217	List: ML17053A216 ML17053A218 ML20062C551
References
LER-78-036-04T, LER-78-36-4T, NUDOCS 7811090165
Download: ML20062C551 (1)

Text

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I.lCENSEE EVENT REPORT -

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F 8 61 ATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES 10121 l During normal operation, analysis o monthly proportional composite l

,Oi3; i for Sept. found concentrations of sodium and sulfate discharged exceed- l FETT1 I ed those values on Table 2.3-1 of ETS. Values discharged were 1.81 l F6 Fs1 I mg/l for sodium and 4.43 mg/l for sulfate above lake ambient concentra- l 0 s I tion. There were no radiological releases involved in this event, nor m] did it create an unresolved safety question. l lO is i 1 I

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as CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h gl The improper application of a Brooks Model 9456 Oval Gear Flowmeter l l i i i combined with a failed seal on the caustic addition pump caused a high i

,,i2i i concentration of sodium and sulfate and a degraded capability to con- ]

L'_LJ l trol the rate of discharge. Seal repaired and proper flow measurement- l gi instrumentation installed and is now operational. i

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