ML20198J016

Notice of Deviation from Insp on 860221-0411

ML20198J016
Person / Time
Site:	Rancho Seco
Issue date:	05/14/1986
From:	Miller L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
To:
Shared Package
ML20198J013	List: ML20198J008 ML20198J016 ML20198J041
References
50-312-86-07, 50-312-86-7, NUDOCS 8605300625
Download: ML20198J016 (2)

Text

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APPENDIX A NOTICE OF DEVIATION Sacramento Municipal Utility District Docket No. 50-312 Rancho Seco Unit 1 License No. DPR-54 As a result of the inspection conducted during the period February 21 to April 1986, it appears that one of your activities was a deviation from accepted standards.

In accordance with the General Statement of Policy and Procedure for NRC Enforcement Actions, 10 CFR Part 2 Appendix C, as revised, 49 FR 8583 (March 8, 1984), the deviation is set forth below:

Rancho Seco Nuclear Generating Station Updated Safety Analysis Report (USAR) Chapter 10, Steam and Power Conversion System, Paragraph 10.1, Design Bases, states that:

"The steam bypass-valves to the condenser, atmospheric dump valves and main-steam safety valves are used, as necessary, following loss of external load and subsequent turbine and reactor trip."

In addition, USAR Chapter 7, Instrumentation and Controls, Paragraph 7.2.3, Integrated Control System, Paragraph 7.2.3.1, Design Bases, states that:

"The combined actions of the control system, the turbine 'oypass to the condenser, and the atmosphic dump valves permit a 50 percent load rejection without safety valve operation."

SMUD Construction Specification NEPH 5304.8C, effective 1/1/86, Section 5.9.3 Instrumentation and Control, which applies to these systems, states that:

"A bare shield drain wire shall be insulated with Kynar heat shrinkable tubing if the wire can possibly come in contact with other uninsulated wire, metal components, or metal devices.

Unterminated shield drain wires (i.e. " floating" shield) shall be insulated with a Kynar heat shrinkable end cap."

Contrary to the above commitments, an unterminated shield drain wire was left uninsulated and in contact with the metal container for the following field terminations:

Turbine Bypass Valves E/P transducers nos. PY-20561, PY-20563 and PY-20566 Atmospheric Dump Valves E/P transducer no. PY-20571 This condition, if left uncorrected, could potentially degrade the signal quality for the circuits by introducing multiple ground points.

8605300625 860514 PDR ADOCK 05000312 G PDR

s You are hereby requested to submit to this office within thirty days of the date of this Notice a written statement regarding the above deviation, describing any corrective steps taken, the results achieved (or corrective steps that are planned) and the date when corrective action will be completed.

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