TOLERANCES FOR GROUP-CONSTANTS IN REACTOR CALCULATIONS

Technical Report · Sat Oct 31 04:00:00 EST 1959

OSTI ID:4263310

Grumm, H; Herre, F

The main difficulty in the group diffusion theory is the determination of appropriate group constants, based on incomplete and inaccurate figures for cross sections, etc. For a proposed accuracy in the calculation of the critical size it is desirable to know the permissible deviation in group constants from the exact value. On the other hand it is often interesting to know the influence of definite deviations in the group constants on the results of reactor calculations. This problem is worked out by means of the perturbation method for one and two group diffusion theory for a bare and for a reflected reactor. A numerical example and physical discussion are given in the case of large graphite reactor and a small water boiler. (auth)

• Research Organization: Inst. of Reactor Physics, Stuttgart
• NSA Number: NSA-13-007120
• OSTI ID: 4263310
• Report Number(s): A/CONF.15/P/959
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BOILING
CONFIGURATION
CRITICALITY
CROSS SECTIONS
EQUATIONS
ERRORS
FAST NEUTRONS
GRAPHITE MODERATOR
GROUP THEORY
MASS
NUMERICALS
REACTOR CORE
REACTORS
REFLECTORS
STANDARDS
THERMAL NEUTRONS
TRANSPORT THEORY
WATER COOLANT