QUARTERLY PROGRESS REPORT FOR MTR-ETR TECHNICAL BRANCHES, THIRD QUARTER, 1957

Technical Report · Mon Dec 16 00:00:00 EST 1957

DOI:https://doi.org/10.2172/4333476· OSTI ID:4333476

McCollom, K.A. ed.

MTR-ETR Technical Assistance. The Engineering Test Reactor Critical Facility fuel loading was increased from a 49 element core to a 59 element core to give an excess reactivity of 11% in DELTA k/k. Statistical weights and thermal flux measurements were made throughout the core. A means of estimating variation in boron content in ETR fuel elements by comparing a standard fuel element with a dummy element and an element containing only fuel showed the average boron content per fuel element to be 0.65 grams more than the specified 1.6 grams. The equlvalent total curie value of MTR fuel elements and the curie content of several specific isotopes were worked out. MTRETR Development. Four experimental shim rod magnets have already operated successfully without failure for longer than the average life of existing MTR shim rod magnets. The lower original cost, the replaceable coil feature, and the negligible maintenance for the experimental magnet should drastically reduce the maintenance attention presently required in the MTR. Refinements were made on the calculations of MTR fuel charge and xenon override. Prediction of MTR charge life was made using ingrowth of Xe/sup 135/ after a power reduction. Methods of measuring both boron and fuel contained in ETR elements by chemical and non-destructive techniques are being ===please delete the above abstract no 8064========

• Research Organization: Phillips Petroleum Co. Atomic Energy Div., Idaho Falls, Idaho
• DOE Contract Number: AT(10-1)-205
• NSA Number: NSA-12-008064
• OSTI ID: 4333476
• Report Number(s): IDO-16430
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-58
• Country of Publication: United States
• Language: English

Related Subjects

PHYSICS
ACTIVATION- BORON- CRITICALITY- ETR- FUEL ELEMENTS- - MASS- MEASURED VALUES- MOCKUP- MTR- NEUTRON FLUX- NEUTRONS- RADIOISOTOPES- - REACTIVITY- REACTOR CORE- REACTOR FUELING- REACTORS- STANDARDS- TESTING- THERMAL NEUTRONS- VARIATIONS
ACTIVATION- FISSION- MEASURED VALUES- MOLYBDENUM 99- MTR- POWER- RADIATIONS- RADIOCHEMISTRY- REACTORS- SCATTERING- - SILVER 113- TEMPERATURE- THERMAL NEUTRONS- URANIUM 233
BISMUTH 205- DECAY- LANTHANUM 142- NUCLEAR STRUCTURE- REACTORS
BORON- CONTROL ELEMENTS- ECONOMICS- FAILURES- FUEL ELEMENTS- HYDRAULICS- IRRADIATION- LIFETIME- MAGNETS- MAINTENANCE- METALLOGRAPHY- MT