ACORN: a computer program for plotting fault trees. [In FORTRAN for CDC Cyber 74]

Technical Report · Tue Nov 01 04:00:00 EST 1977

DOI:https://doi.org/10.2172/5170830· OSTI ID:5170830

Carter, J L

A description and user instructions are presented for ACORN, a FORTRAN computer program for drawing fault trees. ACORN analyzes the input logical structure of a fault tree and provides data for CalComp plot of the tree. AND, OR, and INHIBIT gates are permitted, and basic events are drawn as diamonds, circles, or houses. Each component (gate or basic event) can have a descriptive label within a rectangle attached to the top of its respective symbol. Tree logic is input as a set of FORTRAN statements, each defining a gate in terms of logical operations of the components input to it. ACORN develops the logical structure of the tree from the input statements. The tree's physical structure is developed by assigning relative spatial coordinates to the logical relationships between a gate and its inputs. ACORN provides input data checking, a printer plot of the fault tree, and plotting data for a CalComp model 763 plotter. The program is operational on a CONTROL DATA CYBER 74 computer. 2 figures, 1 table.

• Research Organization: Battelle Pacific Northwest Labs., Richland, Wash. (USA)
• DOE Contract Number: EY-76-C-06-1830
• OSTI ID: 5170830
• Report Number(s): BNWL-2144
• Country of Publication: United States
• Language: English

Related Subjects

052000* -- Nuclear Fuels-- Waste Management
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
A CODES
CDC COMPUTERS
COMPUTER CODES
COMPUTERS
FAULT TREE ANALYSIS
FORTRAN
FUEL CYCLE
MANAGEMENT
PROGRAMMING LANGUAGES
RADIOACTIVE WASTE MANAGEMENT
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
WASTE MANAGEMENT