Scenario Summary

DOE-HDBK-1078-94

ATTACHMENT 22

Exposure--8400MWD/T (near EOL)

Equilibrium xenon--3.1% delta K/K

Reactor pressure--1590 psig.

Scenario Summary:

Starting from 100% power and 100% core flow at the end of core life, the following conditions will

be encountered in sequence:

Failure of an ECCS pump to start on demand during a routine pump operability surveillance

Failure of primary cooling pump "A" seal requiring isolation of the pump

Inadvertent trip of primary cooling pump "B" during maintenance activities supposedly being

conducted on pump "A" resulting in natural circulation operation.

Learning Objectives:

Upon completion of the classroom preview and simulator exercise, the trainees will be able to

perform the following tasks with the reactor plant operating at power and under the additional

conditions as indicated:

Perform an ECCS surveillance in accordance with Plant Procedure 7.4.5.17 and respond to

inoperative pump in accordance with Plant Procedures 2.1.3 and TS 3/4.5.1.

Diagnose a primary cooling pump seal leak and take corrective action in accordance with

Plant Procedures 4.3.1.2, 4.3.1.3, and 4.2.1.7, also TS 3/4.3.2, 3/4.1.1, and 3/4.4.1.

With one primary cooling pump isolated and a trip of the running primary cooling pump,

identify the primary cooling pump trip, identify the natural circulation condition, and take

corrective action in accordance with Plant Procedures 4.602.A13-4.5, 4.602.A6-4.7,

4.2.1.10, and TS 3/4.4.1.

Common Student Errors:

This section will be filled out by the facility as it uses the exercise guide to alert

Note:

the instructor for areas to look for when conducting future training. (Operators

do not always complete subsequent actions in abnormal procedures.)

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