Performance codes

The ASA (now ANSI) performance code for Safety Glazing Materials was revised in 1966 to incorporate these improvements in windshield constmction. The addition of test no. 26 requiring support of a 2.3-kg ball dropped from 3.7 m defined this level of improvement. It was based on a correlation estabUshed between 10-kg, instmmented, head-form impacts on windshields, on 0.6 x 0.9-m flat laminates, and the standard 0.3 x 0.3-m laminate with the 2.3-kg ball (28). Crash cases involving the two windshield interlayer types were matched for car impact speeds and were compared (29). The improved design produced fewer, less extensive, and less severe facial lacerations than those produced in the pre-1966 models. 

Williams, M. Vanderborgh, N. and Appleby, J. (1997). Progress Towards a Performance Code for Fuel Cell Power Systems. ASME Joint Power Generation Conference 32 423-427. 

The manner in which toxicological knowledge must work together with the knowledge of human behavior, fire dynamics, and chemistry to produce an acceptable level of fire safety is proposed. A hypothetical example illustrates what must be done with adequate accuracy in order to design fire safety to a performance code. The example may give the impression that this can already be done. In fact, each computer code used contains dozens of assumptions, some very crude, so that the accuracy of present predictions are unacceptably low. 

We would like our built environment to satisfy a performance code which states that "all occupants of this building will be able to safely exit or reach a safe refuge area no matter where or when a fire starts."... 

This performance code may seem equally fanciful. It is the purpose of this paper to discuss what is necessary to reach that goal and to show the progress to date. 

The illustrative examples could be produced only by using both fire dynamics and human factor information, which contains many crude approximations to the real world and omits completely many important effects. However, it is clear that real progress is being made toward attaining a sufficiently accurate predictive understanding of fire and its consequences so that a performance code can eventually be attained. The computer fire codes need to be made more comprehensive. There needs to be a mechanism set up to evaluate the validity of computer fire codes for use with a legal performance code, just as is done with all other legal codes. 

ASME PTC50, Fuel Cell Performance Code... 

During the longevity testing on the last three fuels, data acquisition was done manually and with less frequency due to constraints 1n funding and available manpower. Boiler efficiency calculations for the longevity tests were done on the SCS Boiler Performance Code (BPC) after BPC results were validated against the B W Computerized Boiler Diagnostic System. No data on particulates were taken on these last three fuels for the reason stated above. 

In order to evaluate the future potential of PDFs, verifiable system performance codes and design codes are required. To this effect, research at the Pennsylvania State University by Yang s group is concerned with the system performance and thrust chamber dynamics of air-breathing PDFs. The details... 

The feasibility of keeping a long metallic fuel slug in the core for ten years needs to be carefully examined. The preliminary assessment of creep deformation after ten years operation by the metallic fuel performance code shows about 5 % deformation and is within the allowable value. However, the performance of longer fuel slugs must be demonstrated. 

Automatic interfaces with the physics codes provide the necessary 3D power and flux distributions required as input to SURVEY/THERM. Flow correlations required as input are calculated with the POKE code (Ref. 8). The particle burnups, fluences, and the fuel and temperature distributions calculated by SURVEY/THERM are passed on to the fuel performance code SURVEY/PERFOR and to the metallic release code TRAFIC. 

Fuel pin performance codes for analyzing the steady state and transient conditions have been improved since 1984, with the data of PNC7DOE operational reliability testing program in EBR-II, etc. The modification of codes for annular fuel is emphasized. A three dimensional FEM code for an analysis of defected fuel pin behavior is modifying by PIE results of Run Beyond Cladding Breach (RBCB) pin. Development of nitride fel fuel performance code is also in progress. 

The propellant properties of several explosives and aluminized (20 wt%) explosive mixtures were calculated using ISPBKW and the standard Naval Weapons Center propellant performance code . 

Table III. 8 of Appendix III summarizes the ongoing and planned developments of the calculation technologies and data sets relevant for the SMR designs considered. The R D directions cover the neutronic codes and nuclear data, the thermal-hydraulic and safety analyses codes, the uncertainty analysis codes, the depletion codes, the fuel performance codes, and the databases of material properties.

M. Suzuki, H. Saitou and T. Iwamura, Analysis of MOX Fuel Behavior in Reduced Moderation Water Reactor by Fuel Performance Code FEMAXI-RM, Nuclear Engineering... 

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