SPY (D1G), AN IBM-704 DIGITAL COMPUTER PROGRAM FOR THE CALCULATION OF NUCLEAR REACTOR THERMAL TRANSIENTS

Technical Report · Fri Jun 10 04:00:00 EDT 1960

OSTI ID:4129631

Goodwin, I R; Hunt, C H; Maxwell, D C; Taylor, R B

SPY (D1G) is an IBM-704 digital-computer program developed specifically for the calculation of thermal transients occurring in a three primary coolant loop, one-pass nuclear reactor system. The program has the computing ability to provide the supponting calculations for the analysis of complete and sequential loss-of-flow accidents, coldwater accidents, stant-up accidents, and other accidents which may be simulated by externally controlled variations in reactivity. Inclusion of a three-channel core model and the effects of interchannel flow redistribution provide a basis for the complete transient thermal aralysis of both nominal and hot channels. Two versions of the program are available: SPY 1 employing three radial nodes and SPY 2 employing six radial nodes to describe the thermal transient effects in terms of fuel-element meat, cladding, and surface temperatures, and bulk-coolant temperatures. Each version contains an option for eliminating all thermal and hydraulic calculations in one of the three channels. Operation of the program requires an IBM-704 digital computer of 16,000-word minimum core storage. (auth)

• Research Organization: Knolls Atomic Power Lab., Schenectady, N.Y.
• DOE Contract Number: W-31-109-ENG-52
• NSA Number: NSA-14-026406
• OSTI ID: 4129631
• Report Number(s): KAPL-M-D1G-TD-13
• Country of Publication: United States
• Language: English

Related Subjects

ACCIDENTS
CANNING
COMPUTERS
COOLANT LOOPS
DIFFERENTIAL EQUATIONS
DISTRIBUTION
FLUID FLOW
FUEL ELEMENTS
LIQUID FLOW
LOSSES
LOW TEMPERATURE
PROGRAMMING
REACTIVITY
REACTOR TECHNOLOGY
REACTORS
STARTUP
SURFACES
TEMPERATURE
THERMODYNAMICS
TRANSIENTS
VARIATIONS
WATER COOLANT