FAI develops MAAP5 code for plant evaluations
Fauske and Associates
Fauske and Associates (FAI) has announced that it has developed the Modular Accident Analysis Program 5 (MAAP5) code.
MAAP5 is designed to provide a wide range of plant evaluations in support of probabilistic risk assessment (PRA), design basis evaluations and plant evaluation for all operating needs.
MAAP5's predecessor, MAAP4, has supported the nuclear industry for the past 15 years.
The MAAP5 features: a new PWR RCS model; a generalised containment model (GCM); new MAAP5-GRAAPH representation for PWRs and BWRs; the MAAP5-DOSE; and the 1-D neutronics model.
Code documentation for MAAP has been delivered to the Electric Power Research Institute (EPRI) and is available to MAAP5 sponsors through the EPRI.
FAI developed the MAAP code in 1981, following the partial core meltdown at Three Mile Island, under the sponsorship of the EPRI and the MAAP Users Group (MUG).
The accident led the nuclear-powerplant industry to develop the MAAP computer code as part of the industry-degraded core rule-making (IDCOR) programme.
Upon the dissolution of IDCOR, ownership of the modular code transferred to the EPRI and a period of enhancements began.
Since that time, FAI has maintained and continued to improve MAAP.
Dr Robert Henry, senior vice-president at FAI, said: 'MAAP5 code builds on the MAAP4 code severe-accident knowledge base and has substantial modelling enhancements that extend the representation of plant-specific features that are considered in the state-of-the-art models for PRAs/PSAs, SAMGs, EOPs and full-scope control-room simulators.'
CEDRAT is meeting the challenge of simulating the control of an induction machine using one of its tools: Portunus — a system simulator.
This paper from Integrated Engineering Software presents an overview of the focusing properties of magnetic quadrupoles and shows how beam spot size can be determined using arc segment emitters. It also shows how parametric variation of the excitation current can be used to determine the optimum level for minimum spot size at points along the beam axis.
This paper from Cedrat demonstrates the determination of cut-off frequencies of different proportional electromagnetic actuators in FE simulation under the consideration of eddy currents. The dynamic limits of different concepts thus can be compared in simulation already before the sampling process is started.
This white paper from Apriso introduces the concept of a ‘digital twin’ as a virtual representation of what has been produced. Compare a digital twin with its engineering design to better understand what was produced versus what was designed, tightening the loop between design and execution.
AVX has released a new version of its SpiCalci simulation software, an engineering tool that calculates performance characteristics and parameters of switch-mode power supply (SMPS) capacitors. SpiCalci 9.0 helps design engineers to identify and select the best SMPS capacitor solutions for applications in the military, aerospace, space, automotive, alternative energy, motor drive, oil and gas, power inversion and conversion and supply industries.