ML20055C021

Ro:On 820729,during Normal Operation Surveillance Testing, Differential Pressure Switches PDS-4304 & 4305 Tripped Out of Spec High at 0.65 & 0.7 Psid.Pressure Switches Recalibr & Functionally Tested

ML20055C021
Person / Time
Site:	Duane Arnold
Issue date:	07/29/1982
From:	Mineck D IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 8208100045
Download: ML20055C021 (1)

Text

lowa Electric 1.ight and Ibwer Company July 29, 1982 DAEC-82 503 Mr. James G. Keppler Regional Administrator Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137

Subject:

Prompt Notification of a Reportable Occurrence File: A-ll8a

Dear Mr. Kepp' c:

This letter, telecopied to your office, is intended to satisfy the requirement for prompt notification of a Reportable Occurrence in accordance with Specification 6.11.2.a of the Duane Arnold Energy Center Technical Specifications.

Technical Specification paragraph (s) violated: 3.7.A.3.a Description of Occurrence:

During nonnal opsration surveillance testing, differential pressure switches PDS-4304 and 4305 tripped out-of spec high at 0.65 and 0.7 psid, respectively. Technical Specification 3.7.A.3.a requires the setpoints to be 0.5 psid. PDS-4304 and 4305 provide opening signals for the torus to reactor building vacuum breakers CV-4304 and CV-4305, respectively. The pressure switches were immediately recalibrated and functionally tested satisfactory.

- Very truly yours, Daniel L. Mineck Plant Superintendent - Nuclear Duane Arnold Energy Center DLM/kLH /pl cc: NRC Resident Inspector AUG 4y 8208100045 820729 PDR ADOCK 05000331 S PDR Ihs;nu Anumt rJurry Cernter

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