Department of Natural Sciences
Clayton College & State University
Morrow, Georgia

April 28, 2009

SCI 1901E - Quiz 20

Name __________SOLUTION_____________

(03)     1.         Normal operating releases for nuclear power plants include.

a.         CO₂

b.         ²³⁹Pu

c.         ¹³⁷Cs

d.         ¹³³Xe

(03)     2.         A LOCA is

a.         a type of reactor accident like the one that occurred at Three Mile Island.

b.         a type of reactor accident like the one that occurred at Chernobyl.

c.         the same as an ECCS.

d.         a type of reactor accident that results in a nuclear explosion.

(03)     3.         For what does the acronym ECCS stand?

                         Emergency Core Cooling System

(03)     4.         Why is an ECCS required even when a reactor is shut down during a accident?

                        Heat produced by decay of fission products must be controlled.

(03)    5.         Explain why the destroyed reactor at Chernobyl continues to present a serious radiation risk even at great distances from the site.

                    The structure built around the destroyed reactor (sarcophagus) to contain radioactive materials is in danger of collapse, releasing large clouds of radioactive dust.