PM RESEARCH AND DEVELOPMENT PROGRAM. Quarterly Progress Report No. 8, January 1, 1963 to March 31, 1963

Technical Report · Thu Oct 31 00:00:00 EST 1963

OSTI ID:4664260

The final design of PM-1 Core 2 was completed; final drawing and specifications were released. Nuclear and mechanical studies in support of the final design were completed. The parametric lifetime study of PM Core 3 was completed. Studies of the Core 3 control system were initiated. Material and assembly process specifications for the Core 2 lumped poison element were prepared and issued. Evaluation of all lumped poison irradiation specimens was completed. High B-10 burnup specimens confirmed the suitability of B/sub 4/C- Zircaloy 2 poison pellets for Core 2 service. Fabrication of prototype holders for the Core 3 irradiation test program was completed. Flow, vibration, and flow- visualization tests were performed using the prototype holders. Nuclear analysis of the Core 3 irradiation experiment was completed except for depletion studies. Analysis of the lower power irradiation tests began. Thermal and hydraulic analysis of the Core 3 irradiation experiment was completed. Nominal coolant flow rate was increased to 46.5 gpm. Nominal maximum fuel temperature of 785 deg F is predicted. Spheroidizing and coating of all natural UO/sub 2/ required for fabrication process development was completed. Processing of enriched material was initiated. Reference fabrication processes for Core 3-type tubular and coupon irradiation specimens were established. Fabrication of Core 2- type tubular irradiation specimens has progressed through the isostatic pressing step. (auth)

• Research Organization: Martin-Marietta Corp. Aerospace Div., Baltimore
• DOE Contract Number: AT(30-1)-2706
• NSA Number: NSA-17-026863
• OSTI ID: 4664260
• Report Number(s): MND-MD-2560-8
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-63
• Country of Publication: United States
• Language: English

Related Subjects

REACTOR TECHNOLOGY
BORON 10
BORON CARBIDES
BURNUP
COATING
COMPACTING
CONTROL ELEMENTS
CONTROL SYSTEMS
DIAGRAMS
ENRICHMENT
FABRICATION
FLUID FLOW
HYDRAULICS
IN PILE LOOPS
IRRADIATION
MATERIALS TESTING
MECHANICS
PELLETS
POISONING
POWER PLANTS
REACTOR CORE
STABILITY
TEMPERATURE
TESTING
URANIUM DIOXIDE
VIBRATIONS
ZIRCALOY