ML20024B119

Startup Test Procedure 74,Offgas Sys.

ML20024B119
Person / Time
Site:	LaSalle
Issue date:	06/24/1983
From:	COMMONWEALTH EDISON CO.
To:
Shared Package
ML20024B100	List: ML20024B099 ML20024B103 ML20024B104 ML20024B107 ML20024B109 ML20024B110 ML20024B111 ML20024B112 ML20024B115 ML20024B116 ML20024B119
References
PROC-830624-09, NUDOCS 8307050239
Download: ML20024B119 (2)

Text

e STARTUp TEST PROCEDURE 74 0FF-GAS SYSTEM ,

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1. PURPOSE A. The purpose of this test is as follows:

1. To verify the proper operation of the Off-Cas System over its expected operating parameters.

2. To determine the performance of the activated carbon absorber.

2. CRITERIA A. I.evel 1

1. The release of radioactive gaseous and particulate effluents must not exceed the limits specified in the site Technical Specifications.

2. There shall be no loss of flow of dilution steam to the non-condensing stage when the steam jet air ejectors are pumping.

B. Level 2

1. The system flou, pressure temperature, and relative humidity shall comply with the design specifications.

2. The catalytic recombiner, the hydrogen analyzer, the activated carbon beds, and the filters shall be operating properly during operation, i.e., there shall be no gross malfunction of these components.

3. RESULTS Test Condition 3.

Off-gas system normal mode data was taken. The dilution steam flow was within limits. The following level 2 criteria were not met:

A. Loop B catalytic recombiner loop B (standby loop) temperature.

B. Gas reheater outlet dewpoint.

C. Relative humidity.

The low standby recombiner temperatures were identified aa a system performance problem during preoperational testing. It was determined that the standby recombiner would require a longer heatup period prior to admitting off gases to the recombiner. This additional heatup time will not affect the overall performance of the recombiners. The gas reheater outlet dewpoint and relative humidity criteria exceptions are 8307050239 830624 PDR ADOCK 05000373 PDR R

STP #74 Page 2 a function of the accuracy of the dewpoint instrumentation. These para-meters (32.2 F dewpoint, 21.3% humidity) are near enough to their expected values (34-49 F dewpoint, 22-38% humidity) to not affect overall perform-ance.

• Remaining Test Condition 3 testing includes hydrogen analyzer data, recombiner performance data, radionuclide residence times data and pre and after filter data.

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