PATHFINDER ATOMIC POWER PLANT. BORON STAINLESS STEEL CONTROL RODS FOR PATHFINDER REACTOR. Final Summary Report

Technical Report · Fri Feb 15 04:00:00 EST 1963

DOI:https://doi.org/10.2172/4741066· OSTI ID:4741066

Patterson, D A; Nehrig, D A; Klumb, R H; Peterson, T E

An extensive development, fabrication, and design analysis program was completed on 2 wt% boron stainiess steel for Pathfinder boiler and superheater control rods. Results indicated that the control rods will operate satisfactorily in the reactor under all foreseeable conditions. It was concluded that the maximum local burnup on the boiler rods is limited to 1.0 core at.% and the superheater rods to 0.5 core at.% to remain well below the onset of any deleterious effects. All stresses imposed on the material were found to be below yield strength. The deflections were calculated and were not sufficient to restrict any movement of the cruciform during reactor operations and scrams. A welding development program produced a sound fabrication method for producing the control rods. A prototype rod was extensively tested in the hot control rod drive test, including a large number of scrams. The rod showed no deleterious effects. The rods were designed to accommodate any helium release and swelling that may occur. (M.C.G.)

• Research Organization: Allis-Chalmers Mfg. Co. Atomic Energy Div., Milwaukee
• NSA Number: NSA-17-017531
• OSTI ID: 4741066
• Report Number(s): ACNP-63001
• Country of Publication: United States
• Language: English

Related Subjects

BOILING
BORIDES
BURNUP
CONTROL ELEMENTS
DEFORMATION
FABRICATION
PATHFINDER
PERFORMANCE
POWER PLANTS
REACTOR TECHNOLOGY
REACTORS
STAINLESS STEELS
STRESSES
SUPERHEATING
WATER COOLANT
WATER MODERATOR
WELDING