Sandia National Laboratories SNL

Contact Michael Bohn, Sandia National Laboratories (SNL), Division 6412... 

This is a letter report from JBF Associates Inc., to Sandia National Laboratories (SNL) summarizing JBF s efforts to analyze dependent (common cause) failures and failures caused by harsh environments. The information used for the analysis was ta)cen from over 1000 failure reports (mostly abstracts of LERs that were assembled for other studies). The 26 groups of components selected for study are accumulators, batteries, cables, control rod drives,... 

Sandia National Laboratory (SNL) completed a literature survey on flammability limits for mixtures of hydrogen and air. Nearly 80 investigations of hydrogen flammability... 

Sandia National Laboratory (SNL) claims the following advantages to ISEE ... 

The lonsiv ion exchange resins are extraction technologies used to separate radionuclides from alkaline wastewater in the presence of competing cations. These resins include lonsiv IE-910 and lonsiv IE-911, which are manufactured using a new class of crystalline silicotitanates (CSTs) invented by researchers from Sandia National Laboratory (SNL) and Texas A M University. CSTs demonstrate high distribution coefficients in acidic, neutral, and alkaline solutions with high concentrations of competitive ions such as sodium and potassium. The affinity of CSTs for strontium in neutral or alkaline wastes is also high. 

The first alternative simplifies the heat integration of the chemical process, and the second simplifies the interface between the chemical process and the secondary loop. CEA (Leybros, 2009) has designed their S-I process for the first alternative, as the requirements for the reactor expected to be used are most suitable for it. GA has developed flow sheets for both alternatives. Sandia National Laboratories (SNL) is a partner of both CEA and GA in the operation of a demonstration loop for the S-I cycle. SNL is charged with design and operation of the sulphuric acid decomposition section. They have developed a bayonet-heater design for the decomposer which incorporates internal heat recovery. As a result, the outlet temperature of the bayonet heat modules is too low to use in the HI decomposition section. Thus, helium is utilised in the HI decomposition section, as in the CEA flow sheets. 

A recuperative bayonet sulphuric acid decomposition reactor has been designed by researchers at Sandia National Laboratories (SNL) that features all-silicon carbide (SiC) construction for the heated parts, can be made from readily available SiC shapes, makes the most use of heat recuperation, and has all of its fluid connections at sufficiently low temperatures that conventional seal materials can be used. Bench-scale experiments using electric resistance heaters as the energy source have verified that the design functions as intended. 

S-I loop is being constructed jointly by Commissariat a I Energie Atomique (CEA Section I), Sandia National Laboratory (SNL Section 11) and General Atomics (GA Section III). The three sections will be integrated for a bench-scale demonstration capable of delivering 200 to 1,000 1/h of H2 in 2008. °... 

An example of one of TSA/TSL s R D funded MEMS based project is the Sandia National Laboratories (SNL) MicroHound project. This is based on the SNL Micro Chem Lab on a Chip , illustrated in Figure 1. The original prototype system from SNL was developed for high vapour pressure, chemical weapons (CW) detection, which utilized a MEMS GC separator, with miniature surface acoustic wave (SAW s) based sensors. The system included an inlet, coated pre-concentrators, detectors, and pumps. To make this useful for trace explosives detection, the addition of an alternate front-end sample collection/macro-preconcentrator and MEMS based coated-preconcentrator is necessary, along with the option to utilize or exclude the MEMS GC separator followed by detection by either, or both, SAW s and miniaturized IMS detectors. 

Even small amounts of carbon monoxide or other contaminants can poison a fuel cell. Sandia National Laboratories (SNL) is working on developing gas-selective thin film membranes to improve and lower the cost for hydrogen purification. Defect-free aluminosilicate and silicalite zeolite thin films supported on commercially available alpha and gamma alumina disk substrates were developed. In tests using SNL s permeation unit, which can test both pure and mixed gases from room temperature to 250°C, excellent separation values for hydrogen were achieved. 

Welk et al. from Sandia National Laboratories (SNL) (USA) [34] have intensively studied the potential applications of zeolite membranes in reforming streams separation. ZSM-5 zeolite membranes synthesized by them showed excellent performance for hydrogen separation from light gases mixture. It was reported that after a single pass through the ZSM-5 zeolite membrane, the Ha purity was enriched from 76% (simulated reforming stream) to >98%. 

Other devices such as the Cyrano Sciences, (Smiths Detection, Edgewood, MD), a handheld device using conductive polymer films deposited in an array on a ceramic substrate and the Micromachined Aconstic Chemical Sensor (Sandia National Laboratories, SNL), which is able to detect VOCs, explosives, illicit drngs, and chemical warfare agents, are also commercially available [32],... 

Sandia National Laboratories (SNL) is committed to performing work safely and ensuring the protection of the workforce, the public, and the environment. Sandia is also committed to performing work effectively and efficiently, ensuring that its customers receive the best possible value for each dollar spent. Through implementation of ISMS, Sandia expects to achieve improved safety performance and a consistent set of safety policies, objectives, principles, and management fimctions. 

Rome Laboratory (RL) Air force plastics and composites research laboratory, http //www.rl.afmil Sandia National Laboratory (SNL) http //www... 

The author wishes to thank Ronald J. Lipinski (SNL), Robert Busch (UNM), Steven A. Wright (SNL), Roger X. Lenard (SNL), and Kendall R. DePriest (SNL) for providing technical assistance, opportunity and guidance in the creation of this report. The author also wishes to thank the Sandia National Laboratories (SNL) Student Internship Program (SIP) for making this report possible. 

Sandia National Laboratories (SNL), 1993a, Sandia National Laboratories Site-Wide Hydrogeologic Characterization Project Calendar Year 1992 Annual Report, SAND93-0681, Sandia National Laboratories, Albuquerque, NM, October 1993a. 

Sandia National Laboratories (SNL), 1996b, Environmental Baseline Update-Revision 1.0, SAND 96-1608. Prepared by IT Corporation under contract DE-AC04-94AL85000, Albuquerque, NM, July 1996. 

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