PNO-I-98-053, on 981115,plant Experienced Turbine Trip While Operating at 95% Power Due to High Level Condition on One of Two Moisture Separators.Reactor Automatically Shut Down.Util Evaluating Incorrect Sys Drawing.States of Nj & DE Notifie

PNO-I-98-053:on 981115,plant Experienced Turbine Trip While Operating at 95% Power Due to High Level Condition on One of Two Moisture Separators.Reactor Automatically Shut Down.Util Evaluating Incorrect Sys Drawing.States of Nj & DE Notifie

ML20195D505
Person / Time
Site:	Hope Creek
Issue date:	11/16/1998
From:	Lois James, Stephen P NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To:
References
PNO-I-98-053, PNO-I-98-53, NUDOCS 9811180081
Download: ML20195D505 (1)

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, ,. November 16, 1998 PRELIM'INARbNOTIFICATIONOFEVENTORUNUSUALOCCURRENCEPNO-I-9 1 i

This preliminary notification constitutes EARLY notice of events of POSSIBLE '

safety _or public interest significance. The information is as initially received without verification or evaluation, and is basically all that is known by Region I staff in King of Prussia. Pennsylvania on this date.

Facility Licensee Emeroency Classification Public Service Electric & Gas'Co.

i Hope Creek 1 Notification of Unusual Event '

Alert Hancocks Bridge.New Jersey Site Area Emergency Dockets: 50-354- General Emergency X Not Applicable

Subject:

REACTOR SHUTDOWN IN EXCESS OF 72 HOURS On November 15, 1998. Hope Creek experienced a turbine trip while '

' operating at 95 percent power due to a high level condition on one of the two moisture separators. The reactor automatically shut down in response '

i to the turbine trip per design. Just prior to the transient, operators were tagging an instrument air line that affected several- feedwater heaters that were already out of service for maintenance. However, a system drawing used to develop the tagoul. did not show an additional air i supply to additional level control va' . for the moisture separator drain tanks. Consequently, when this supply was isolated, a moisture

! separator level transient occurred ar asulted in the high moisture separator level turbine trip. The o utall plant response to the l transient was normal, except that the 'D' safety / relief valve lifted

about 50 psig below the nominal 1130 psig technical specification required setpoint.

l PSE&G is evaluating the incorrect system drawing. PSE&G has declared the t

relief valve function of the 'D' safety / relief valve inoperable and is assessing the operability of the automatic depressurization system l furction of the valve. PSE&G plans to complete the post-transient analyses and corrective actions on about November 18, with plant startup L to follow, t

The resident inspector responded to the event, performed a detailed 1 walkdown of the control room and interviewed the control room operators.

PSE&G issued a news release on November 15, 1998.

l The state of New Jersey and Delaware have been notified.

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Contact:

LINVILLE JAMES PINDALE. STEPHEN (610)337-5129 (609)935-3850

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9811180001 981116 U I4 E k PDR O l l

PNO-I-99-053 PDR ,