ML083330173

PV-2008-11-Post-Examination Comments and Analysis

ML083330173
Person / Time
Site:	Palo Verde
Issue date:	11/21/2008
From:	Bement R Arizona Public Service Co
To:	Collins E Region 4 Administrator
References
102-05931-RSB/FJB
Download: ML083330173 (22)

Text

PVNGS 2008 License Examination Post-examination Assessment Written Examination Question Assessment 50% or more of the candidates answered these questions incorrectly.

Question # Success Rate Description SRO Q-5 33% Question asked which at EOP should be entered for the given conditions. Answer key and worksheet listed A (Reactor Trip) as the correct answer, after review it has been determined that B (LOAF) should be the correct answer.

Modified the question, worksheet and answer key to reflect this change.

This change has been submitted in the Post Exam submittal.

SRO Q-7 44% Question asked for 2 preferred methods of contamination control during a SGTR/LOOP event. All candidates who missed the question chose distracter B which included increasing the cooldown rate to 100 degrees per hour. The SGTR procedure limits the CD rate to 30 degrees during a LOOP due to ensure asymmetric cooldown.

The question is valid as written.

SRO Q-13 44% Question asked what signal would stop the SG overfill event and which EOP should be entered.

All picked correct signal MSIS but some chose Reactor Trip vs. Excessive Steam Demand. The excessive cooldown required ESD to be entered.

The question is valid as written.

SRO Q-21 33% Question asked Operability status of ECCS (HPSI pumps) with the A DG OOS and a subsequent loss of the B HPSI pump room essential cooler.

The correct answer on the worksheets and answer key was both HPSI pumps Inoperable. All those who missed chose distracter C which stated that A HPSI was operable if the PBA-S03 was powered by offsite power, this can be considered correct since TS allows a 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> period before A HPSI must be declared Inoperable. A & C are both considered correct answers.

This change has been submitted in the Post Exam submittal.

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PVNGS 2008 License Examination Post-examination Assessment RO Q-34 32% Question asked for the response of the Reactor Drain Tank as saturation conditions are reached in the Pressurizer when forming a bubble. The correct answer was smaller pressure increases accompanied by larger level increases, most examinees picked distracter D greater pressure increase accompanied by smaller level increases.

In review the question should have been worded more clearly.

The question is valid as written.

All examination questions missed by any candidate have been reviewed and there are no other issues identified with any other questions.

Written Exam Results SROs SRO RO Combined Reactor Operators Sensitive Kharrl 76 90 86 Sensitive Information Huck 86 Information Smith 80 95 91 Gallegos 85 Martinez 92 93 92 Schingeck 91 Piepiora 76 85 82 Bury 83 Clark 84 93 90 Trejo 97 Liston 76 86 83 Ploegman 90 Whitson 84 90 88 Hopkins 94 Schank 72 93 87 Rosenbaum 86 Fouse 72 89 84 Ratliff 86 Kura 98 2