ML19209A796

Startup Test 2:Control Rod Operability & Subcritical Check.

ML19209A796
Person / Time
Site:	Dresden
Issue date:	09/25/1979
From:	COMMONWEALTH EDISON CO.
To:
Shared Package
ML17174A048	List: ML19209A793 ML19209A796 ML19209A802 ML19209A804
References
NUDOCS 7910050405
Download: ML19209A796 (1)

Text

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DRESDEN UNIT 2 STARTUP TEST No. 2 CONTROL ROD OPERABILITY AND SUBCRITICAL CHECK PURPOSE The purpose of this test is to assure that no gross large local reacti-vity irregularities exist and that all control rods are functioning properly.

CFITinfA

1) Each control rod will be withdrawn after the fcur fuel bundles surrounding the given control rod are loaded. This will in-sure that the mobility of the control rod is not impaired.

2) After the core is fully loaded, each control will be withdrawn and inserted one at a time to assure that criticality will not occur due to the withdrawal of a single rod. Nuclear instru-mentation will be monitored during the movement of each control rod to verify subcriticality.

RESULTS AND DISCUSSION Each control rod was withdrawn after the four fuel bundles surround-ing the given control rod were loadad. Control rod mobility was assured.

After the core was loaded, each control rod was withdrawn and in-serted one at a time. The Source Range Monitors were monitored during the movement of each rod and subcriticality was verified.

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