ML082261473

Hlt 0610 Lessons Learned

ML082261473
Person / Time
Site:	Browns Ferry
Issue date:	08/13/2008
From:	Tennessee Valley Authority
To:	NRC/RGN-II
Shared Package
ML082260164	List: ML082261473 ML082261484
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Download: ML082261473 (6)

Text

EXPERIENCE Both a good teacher...and a bad teacher.

Goodbecause the lesson you learn is seldom forgotten.

Badbecause it gives you the test first, then teaches you the lesson.

Question Format NUREG 1021 shows four format models in Appendix B.

Turns outthe Two-Part Question Format is the one format that receives the least resistance during the review process.

The Two-Part Question Format does simply the process for developing plausible distracters.

Plausible Distracters NUREG 1021 Appendix B Attachment 2 D. Implausible Distracters The next two questions illustrate the concept of implausible distracters, which is another common psychometric deficiency that should be avoided on NRC examinations.

1. Which of the following will cause the RHR pumps to start during a design-basis LOCA?

a. low drywell pressure

b. high reactor water level

c. high drywell pressure

d. MSIVs in the NOT OPEN position Distracters a, b, and d are implausible, considering minimal knowledge of the plant response to a LOCA.

2. Which ONE of the following conditions will NOT result in a shutdown of the standby gas treatment system (SBGTS)?

a. manual shutdown

b. high-temperature (107 C, 225 F) charcoal bed

c. high-temperature (82 C, 180 F) heater inlet

d. overloads in the local control panel Distracter a is very implausible, and distracter d is subjective. The question is also written from a negative perspective.

Plausible Distracters Upon further review, my interpretation of a plausible distracter is; If a minor change in the stem makes the distracter correctits PLAUSIBLE.

NOTE:

If a distracter is chosen as the correct answer during validationits PLAUSIBLE.

Do NOT teach in the stem.

Save your teaching skills for the Plausibility Analysis.