05000361/LER-1982-020, Forwards LER 82-020/01T-0.Detailed Event Analysis Submitted

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Forwards LER 82-020/01T-0.Detailed Event Analysis Submitted
ML20054L455
Person / Time
Site: San Onofre Southern California Edison icon.png
Issue date: 06/22/1982
From: Ray H
SOUTHERN CALIFORNIA EDISON CO.
To: Engelken R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
Shared Package
ML20054L456 List:
References
NUDOCS 8207080138
Download: ML20054L455 (2)


LER-2082-020, Forwards LER 82-020/01T-0.Detailed Event Analysis Submitted
Event date:
Report date:
3612082020R00 - NRC Website

text

1 o Southern California Edison Company =b&gg S A N ONOF R E NUC L C A r4 GENER A TING S T A TION P .O . B O A 120 g, S AN C L EMEN T E. C A LIF ORNI A 926f2 c'[.

H. B. R AY June 22, 1982 ST A fION An AN AG E R (y j 4) 49, 7 700 U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region V 1450 Maria Lane, Suite 210 Walnut Creek, Cal i fornia 94596-5368 Attention: Mr. R. H. Engelken, Regional Administrator

Dear Sir:

Subject:

Docket No. 50-361 Licensee Event Report No.82-020 San Onofre Nuclear Generating Station Unit 2

Reference:

Facsimile Transmission, H.B. Ray (SCE) to l R.H. Engeiken (NRC), Written Confirmation I of Prompt Report, dated June 10, 1982 l

in accordance with Appendix A Technical Specifications 4.0.3, 4.6.1.3 and 6.9.1.12.b to Operating License NPF-10 for San Onof ra Unit 2, this submittal provides the required 14 day written follow up and Licensee Event Report for an incident involving a missed surveillance on the l

Containment Personnel Air Lock. Prompt notification of the event was confirmed by the facsimile transmission referenced above.

On June 4, 1982, Unit 2 entered Mode 4 at 1700 hours0.0197 days <br />0.472 hours <br />0.00281 weeks <br />6.4685e-4 months <br />. The Containment Personnel Air Lock was subsequently opened for multiple entries by Operations and Maintenance Personnel. Technical Specification 4.6.1.3.a requires that the Air Lock be demonstrated operable within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> following each closing, except when the Air Lock is being used for

, multiple entries and then at least once per 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. A maximum allow-

! able extension not to exceed 25T of the survell!ance interval (18 hours2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br /> l In this case) is permitted per Technical Specification 4.0.2.a. This demonstration of operability, therefore, was required to be completed by 1100 hours0.0127 days <br />0.306 hours <br />0.00182 weeks <br />4.1855e-4 months <br /> on June 8, 1982.

l Due to miscalculation of the allowable time interval by Operations personnel, the test was nor performed until 0915 hours0.0106 days <br />0.254 hours <br />0.00151 weeks <br />3.481575e-4 months <br /> on June 9, 1982.

Test results confirmed the Air Lock operability.

Corrective measures taken include verbal instructions to Operating personnel on the need to follow surveillance requirements stringently, l

ar.d revising the practice of identifying surveillances on the schedule sheets to include the identi f ication of "NO LATER THAN" time and date.

l 9207080138 820622

{DRADOCK05000g

[

b e N Mr. R. ii. Engelken June 22, 1982 '

t

't .

'l There was no offect on public health and safety as a result of this ,

incident.

A completed copy of the LER 82-020 is enclosed. If there are any questions regarding the above please contact me.

Sincerely, d

Enclosure:

LER 82-020 cc: U.S. tJuclear Regulatory Conmission Office of Inspection and Enforcement U.S. tJuclear Regulatory Commission Office of Management Information and Program Control (MIPC) institute of tJuclear Power Operations (ItJPO)

A. E. Chaf fee (UStJRC Resident inspector, San Onof re Unit 2)

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