Award Data

THE NUCLEAR REGULATORY COMMISSION (NRC) HAS SPONSORED THE DEVELOPMENT OF THE NUCLEAR PLANT DATA BANK (NPDB) SYSTEM AT TECHNOLOGY DEVELOPMENT OF CALIFORNIA (TDC) FOR APPROXIMATELY THE LAST FIVE YEARS. THIS WORK IS ESSENTIALLYCOMPLETE AND IS AN INTEGRAL PART OF THE NUCLEAR PLANT A (NPA). TO MAKE THE NPDB A USEFUL AND PRODUCTIVE SYSTEM, REPRESENTATIVE DESCRIPTIONS OF NUCLEAR POWER PLANTS MUST BE ENTE ...

THE ACCIDENT AT TMI DEMONSTRATED THAT LARGE QUANTITIES OF HYDROGEN CAN BE GENERATED AS A RESULT OF ZIRCONIUM-STEAM OXIDATION REACTION, WHICH POSES A HYDROGEN BURN THREAT IN LWR CONTAINMENTS. THE RATES AT WHICH THE CORE HEATS UP AND WHICH HYDROGEN IS GENERATED DEPENDS UPON THE ZIRONIUM-STEAM REACTION RATE, WHICH IN TURN IS INFLUENCED BY LOCAL STEAM SMSTARVATION AND HYDROGEN BLANKETING EFFECTS. THE ...

CSA PROPOSES TO DESIGN AND IMPLEMENT A STEADY-STATE SOLUTION FOR THE COMPLETE SYSTEM OF EQUATIONS SOLVED IN EITHER THE TRAC/PF1, TRAC/BD1, OF RELAP5 CODES. THE STEADY-STATE SOLUTION WILL UTILIZE THE STEADY-STATE FORM OF THE MODEL EQUATIONS AND WILL UTILIZE EXISTING EQUATION SOLVERS TO THE EXTENT POSSIBLE. ALL TIME-DEPENDENT CONSTITUTIVE AND COMPONENT MODELS WILL BE INCLUDED IN THE SOLUTION TO ENSU ...

Voxtel has demonstrated efficient high-speed photon counting with thresholded linear-mode avalanche photodiode (APD) receivers using multi-gain-stage InGaAs/InAIAs APDs. In contrast to Geiger APDs, thresholded photon-counting linear APD receivers are thought not to suffer afterpulsing, and can support maximum count rates (MCR) up to 2 or 3 orders of magnitude faster than Geiger APDs. However, the ...

With the range and variety of radiation detectors that exist and the continuing threat of a radiological disaster in the future, the need for training of first responders and personnel in the front lines of interdiction is extraordinary and daunting. It is daunting because of the number of people across the nation that must be trained initially and who must continually maintain their training to b ...

The human body is a near perfect energy generator. Demand for energy harvesting innovation, along with technology advances in thin film thermoelectric generators and highly efficient DC/DC boost circuitry now place wearable thermoelectric power harvesting within reach. The objective of Perpetua`s Phase II proposal is to deliver an energy harvesting system for first responder applications powered b ...

A back-illuminated planar InGaAs photodiode tested to have 95% quantum effiiency (QE) at 1550 nm, area greater than 1 mm2, low capacitance (125 MHz) will be improved. Although the existing Phase I device exhibited bulk material dark current generation better than commercially available devices, the sidewall-generated dark current was found to dominate the noise equiva ...

Sepax Technologies, Inc. has identified a new type of anoin-exchange resin which separates single-wall carbon nanotubes (SWCNTs) with >80% recovery yield and resolves in a single pass the chiral tubes of (6,5) well from commercial SWCNT starting materials by Chromatography. Improvement and scale up of the targeted resin production will facilitate the separation of chiral nanotubes for the academic ...

To meet the critical security needs of the Department of Homeland Security and others, we propose two methods for providing a secure root of trust for mobile devices. One method is designed to integrate as easily into existing systems, while the other requires deeper integration but provides correspondingly stronger security. The keys to our work are practicality and integration: practicality to e ...

Passive microwave sensors aboard satellites provide valuable information regarding weather conditions by measuring atmospheric attenuation over a broad range of frequencies from 0-200 GHz. Additional ground-based sensors are desirable to provide complementary upward looking measurements that can be used to refine existing attenuation models. Operating over such a large bandwidth, however, places ...