ML060690362

Palo Verde - Init Exam - 08/2005 - Licensee Post Exam Assessment

ML060690362
Person / Time
Site:	Palo Verde
Issue date:	08/04/2005
From:	Riley P Arizona Public Service Co
To:	Office of Nuclear Reactor Regulation
References
054-03161, 50-528/05-301, 50-529/05-301, 50-530/05-301 50-528/05-301, 50-529/05-301, 50-530/05-301
Download: ML060690362 (2)

Text

ID#: 054-03 161 DATE: August 4,2005 Company Correspondence TO: Ryan Lantz, NRC Sta. # Ext. # FROM: Pat Wiley Sta. # 7894 Ext. # 6580

SUBJECT:

ATTACH: License Exam Post-Examination Assessment Palo Verde Initial License Written Exam Results Palo Verde's NRC RO and SRO license written exam was administered on Friday, July 29,2005 at Palo Verde Nuclear Generating Station.

An assessment was completed immediately following the exam. All examination questions missed by any candidate have been reviewed.

The assessment focused on those questions missed by 50% or more of the candidates and any that had no correct answer or more than one correct answer. One question had no correct answer. Six questions had 50% or more incorrect responses by the candidates. The detailed assessment is attached. There are no other issues identified with any other questions. Manager, Operations Training CC: Fred Riedel Dan Hautala, NRA Page 2 Distribution August 4,2005 054-03 161-PJW Written Examination Question Assessment

>50% of the candidates missed the following questions 25% Question asked when the "B" charging pump would start if it was not running and the charging pump selector was in the 1-2-3 position.

In this position the "B" pump would be selected as the "Normally running" pump. The only way to stop the pump in this configuration is to place the pump in PTL. As long as the handswitch is in Auto after stop position (green flagged), the pump will automatically stop on high level at +15% from setpoint aiid restarts at +14% decreasing level. The question is inrtlli as written. There is no con-cct answcr and therefore the question shall be deleted. Question asked

• or the type of core heat removal that is in progress following a blackout 38% with QSPDS ldicating 32 degrees superheat.

4 candidates chose response "C" which states that 2 phase N.C. flow was available and that the core was still covered.

A superheated coiiditioii indicates that core uncovery has occurred. Clarification will be provided on this item durin2 examination review.

The auestion is valid as written. 13% 50% 50% 25% 33% Question established parameters that indicate an ESD is occurring in conjunction with a SGTR on the same SG and asked for how to feed both SGs. All examinees but one picked response "D" which allows feeding of the non affected SG. This is NOT allowed IAW with the Tech Guide mitigating strategy.

There is insufficient flow to feed both SGs at this time and it is more important to acquire Containment Isolation by feeding up the affected SG to cover the tubes and minimize the radiological release. Clarification will be - provided oil this item during examination review. The question is valid as written. Question asked for the temperature of the fluid downstream of a leaking PSR Relief valve lifting to the RDT @ 10 pslg. This is an isenthalpic process and requires the examinee to correctly read the temperature from the steam flow saturation curve. Clarification will be provided on this item during examination review. The question is valid as written. Question asked the examinee to identify how to restore SG levels based on the running AFW p~iiiip "B" discharge pressure low alarm being lit. All 4 candidates who missed this question picked response "D". There response was partially based on the fact that AFW pump "A" is preferred over AFW pump "N", however, if feed flow only matches steam flow level will not be restored in the SG. Additional training will be provided on this item during examination review. The question is valid as written. Question asked candidates what the expected plant response from COLSS and CPCs is for a 12 finger CEA dropping to the bottom of the core @-I 00% power. 6 of the candidates All examination questions missed by any candidate have been reviewed and there are no other issues identified with any other questions.