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Three Mile Island Chapter 18.0 B&W Cross Training Course 1

B&W Cross-Training Course R-326C

OBJECTIVES

1. Explain how a loss of feedwater resulted in a reactor trip and subsequent LOCA.

2. Describe the major radiation release paths which occurred at TMI-2.

3 Describe the decay heat removal methods

3. Describe the decay heat removal methods used at TMI-2 during the transient.

4. Explain which parameters are used and how they indicate decay heat removal by natural circulation (or loss of natural circulation).

5. List the operational conditions which enhance natural circulation. Include which systems may be operated different from normal conditions.

6 List the sources of hydrogen and oxygen OBJECTIVES

6. List the sources of hydrogen and oxygen within the primary system and containment.

7. Determine which RCS parameters can be used as possible indications of boiling (steam formation) within the system.

Appendix - Sequence of Events 4

Appendix - Sequence of Events 5

Appendix - Sequence of Events 6

Appendix - Sequence of Events 7

Appendix - Sequence of Events 8

Appendix - Sequence of Events 9

Appendix - Sequence of Events 10

Appendix - Sequence of Events 11

Appendix - Sequence of Events 12

Appendix - Sequence of Events 13

14 Three Mile Island (Fig. 18-1)

15 T=0 Minutes (Fig. 18-2)

16 T=8 Minutes (Fig. 18-3)

17 T=1 Hour (Fig. 18-4)

18 T=2 Hours (Fig. 18-5)

19 T=16 Hours (Fig. 18-6)

20 TMI Radiation Release Path (Fig. 18-7)

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