05000529/LER-1986-001, :on 860103,source Range Monitor Channel Checks Not Performed within Max Allowable Time.Caused by Failure of Operator to Perform Test on Schedule.Step Added to Procedure to Initiate Test in Mode 6

:on 860103,source Range Monitor Channel Checks Not Performed within Max Allowable Time.Caused by Failure of Operator to Perform Test on Schedule.Step Added to Procedure to Initiate Test in Mode 6

ML20137R496
Person / Time
Site:	Palo Verde
Issue date:	02/03/1986
From:	Quinn W, Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	NRC OFFICE OF ADMINISTRATION (ADM)
References
ANPP-34906-EEVB, LER-86-001, LER-86-1, NUDOCS 8602130247
Download: ML20137R496 (3)

LER-1986-001, on 860103,source Range Monitor Channel Checks Not Performed within Max Allowable Time.Caused by Failure of Operator to Perform Test on Schedule.Step Added to Procedure to Initiate Test in Mode 6

Event date:
Report date:
5291986001R00 - NRC Website

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NR Fw= 3ee u S. NUCLE 4.s RaoutAToRY Commission APPROVED OMS NO 3190 410.

LICENSEE EVENT REPORT (LER)

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On January 3, 1986, Unit 2 was in Mode 6 " REFUELING" when it was discovered that 42ST-2SE01 (Source Range Flux Monitor Channel Checks) was not performed within the Technical Specification maximum allowable time.

To prevent recurrence, the following actions have been taken by the Shift Supervisor:

1.

Instructed the Reactor Operators (RO) to review Surveillance Tests (ST) on shift turnover.

2.

Instructed the RO's that they should, if there are any questions on operability or time to perform ST's, contact the Assistant Shift Supervisor or the Shift Supervisor.

3.

Reviewed the ST with the RO's to ensure that they know how to evaluate when performance is required.

4.

Emphasized that the shift ST's are within the RO's area of responsibility for initiation and performance.

5.

Instructed Assistant Shif t Supervisor to review the ST's to know when they are due.

A step will also be added to 42ST-2ZZ19 (Routine Surveillonce Mode 5-6 Logs) to initiate performance of 42ST-2SE01 in Mode 6.

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w m asu w im On January 3,1986, Unit 2 was in Mode 6 " REFUELING" when it was discovered that 42ST-2SE01 (Source Range Flux Monitor (IG) Channel Checks) was not performed within the Technical Specification maximum allowable time.

Technical. Specification 4.9.2 Surveillance Requirement is to perform a CHANNEL CHECK at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

The surveillance was performed on January 2, 1986, at 0820 and then again on January 3, 1986, at 0030, a total time span of 16 hours1.851852e-4 days <br />0.00444 hours <br />2.645503e-5 weeks <br />6.088e-6 months <br /> and 10- minutes.

The Technical Specification requirement is every 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> with a maximum allowable extension not to exceed 25% of the surveillance interval which is an additional 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />.

The maximum allowable interval for this surveillance is 15 hours1.736111e-4 days <br />0.00417 hours <br />2.480159e-5 weeks <br />5.7075e-6 months <br />, which was exceeded by 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and 10 minutes.

42ST-2SE01 was performed again within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> to return to the normal performance schedule.

The root cause of the incident was the Licensed Operator's failure to perform. the test at the scheduled time.

To prevent recurrence, the following actions have been taken by the Shift Supervisor:

1.

Instructed the Reactor Operators (RO) to review Surveillance Tests (ST) on shift turnover.

2.

Instructed the RO's that they should, if there are any questions on operability or time to perform ST's, contact the Assistant Shift Supervisor or the Shift Supervisor.

3.

Reviewed the ST with the R0's to ensure that they know how to evaluate when performance is required.

4.

Emphasized that the shift ST's are within the R0's area of responsibility for initiation and performance.

5.

Instructed Assistant Shif t Supervisor to review the ST's to know when they are due.

A step will also be added to 42ST-22219 (Routine Surveillance Mode 5-6 Logs) to initiate performance of 42ST-2SE01 in Mode 6.

The source ranges do not provide any automatic safety feature actuations and were within the acceptance criteria as stated in 42ST-2SE01 when the surveillance was performed, therefore, there was no adverse impact on the safety of the plant.

No similar events have occurred previously in Unit 2.

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Arizona Nuclear Power Project P O. BOX 52034 e PHOENIX. ARIZONA 85072-2034 February 3, 1986 ANPP-34906-EEVB/KLM/98.05 U. S. Nuclear Regulatory Commission

- Document Control Desk Washington, D. C.

20555 Subject: Palo Verde Nuclear Generating Station (PVNGS)

Unit 2 Docket No. STN 50-529, License No. NPF-46 Licensee Event Report 001-00 File: 86-020-404

Dear Sirs:

Attached please find Licensee Event Report (LER) No. 86-001-00 prepared and sub-mitted pursuant to 10 CFR 50.73. In accordance with 10 CFR 50.73(d), we are here-with forwarding a copy of the LER to the Regional Administrator of the Region V Oicice.

If you have any questions, please contact me.

Very truly your.

\\

r CW nM E. E. Van Brunt, Jr.

Executive Vice President Project Director EEVB/KLM/rw Attachment cc:

J. B. Martin (all w/a)

R. P. Zimmerman A. L. Hon E. A. Licitra A. C. Gehr INP0 Records Center

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