EXTERNAL RADIATION LEVELS OF REACTOR COOLANT LOOP PIPING AND PURIFICATION DEMINERALIZERS

Technical Report · Tue Apr 16 04:00:00 EST 1963

OSTI ID:4696018

In order to determine the buildup of radiation levels near the reactor coolant loop piping and components and inside the purification system demineralizer concrete cubicle, periodic radiation surveys of selected points on these components were made using portable radiation detection equipment. The high radiation levels discovered during the first Seed 3 performance of this test were considered to be the result of crud which was dislodged from core components during Seed 2-Seed 3 refueling and deposited in the reactor coolant piping. The location of this crud was apparently affected by changes in the status of the plant during power operation and shutdowns. The radiation levels in the vicinity of the purification demineralizers generally increased with increased resin service hours, but these radiation levels could not be correlated with the radiation levels of the reactor coolant loop piping and components. The Jordan meters used during the surveys had undesirable characteristics which caused them to yield unreliable data. During Seed 2 and Seed 3 operations, there was an increase in the cobalt inventory in the reactor coolant. (auth)

• Research Organization: Duquesne Light Co., Shippingport, Penna.
• NSA Number: NSA-17-031723
• OSTI ID: 4696018
• Report Number(s): DLCS-3410114
• Country of Publication: United States
• Language: English

Related Subjects

COBALT
CONCRETES
COOLANT LOOPS
COOLANTS
MINERALS
OPERATION
PERFORMANCE
POWER PLANTS
RADIATION DETECTORS
RADIATION DOSES
RADIOISOTOPES
REACTOR TECHNOLOGY
REPROCESSING
SHUTDOWN
TESTING