IBM-704 Codes for Reactivity Step Calculations (RE-126 and RE-135) | Zendy

C.E. Cohn | Zendy; B.J. Toppel | Zendy

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IBM-704 Codes for Reactivity Step Calculations (RE-126 and RE-135)

Author(s) -

C.E. Cohn,

B.J. Toppel

Publication year - 1960

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/4188260

Subject(s) - fortran , reactivity (psychology) , ibm , code (set theory) , zero (linguistics) , computer science , source code , power (physics) , programming language , nuclear engineering , mathematics , physics , thermodynamics , engineering , set (abstract data type) , medicine , linguistics , philosophy , alternative medicine , pathology , optics

Two codes were written for the IBM-704 to calculate the behavior of a reactor following a step change in reactivity, using one-group. space- independent, zero-power kinetic theory. The reactor is assumed to be running at constant level before the step is made, either at critical or subcritical conditions, with an external source. The code RE-128 assumes all delayed-neutron precursors in equilibrium at the time of the step, while the code RE-135 allows cases with nonequilibrium precursors to be handled. RE-126 can handle the case of zero final reactivity. Both codes are written in FORTRAN language. (C.J.G.

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