scholarly journals Design requirements document for the phase one privitization facility electrical power

1996 ◽  
Author(s):  
G. Singh
Keyword(s):  
Electrical Power ◽  
Design Requirements ◽  
Requirements Document

scholarly journals Supplemental design requirements document enhanced radioactive and mixed waste storage Phase V Project W-112

1994 ◽  
Author(s):  
V.P. Ocampo ◽  
G.F. Boothe ◽  
T.M. Greager ◽  
K.D. Johnson ◽  
S.L. Kooiker ◽  
...  
Keyword(s):  
Waste Storage ◽  
Design Requirements ◽  
Mixed Waste ◽  
Requirements Document

Design and Verification of Cray XT- 4 Supercomputer Cooling System

2007 ◽  
Author(s):  
Alexander Yatskov
Keyword(s):  
Power Density ◽  
Cooling System ◽  
Electrical Power ◽  
Cost Effective ◽  
Thermal Design ◽  
Heat Sinks ◽  
The Past ◽  
Design Requirements ◽  
Supercomputer Systems ◽  
Dual Core

Cray supercomputers are purpose-built to meet the special needs of capability class HPC applications. Recent advances in Cray scalar supercomputer systems resulted in the introduction of the higher density compute cabinet that consumes significant amounts of electrical power and produces an extraordinary amount of heat. Due to the new design requirements, which have tremendous consequences with regard to thermal management, new cooling concepts were required. The XT4 can have up to 30,000 dual-core Opterons, and the SeaStar2 interconnection chip plugs right into the Hyper Transport links on the Opteron processors to make a very fast mesh of processors and memory for applications. Such a machine consumes about 5.2 megawatts of power to deliver around 1.15 petaflops. That is twice the size of Red Storm, but more than a factor of 10 more performance. The extra power density required additional modification to the cooling system. This article describes the design, simulations and verification of the XT-3 and XT-4 systems. Over the past few years thermal design for cooling microprocessors has become increasingly challenging, as silicon technology continues to scale in accordance with Moore’s law. The industry has traditionally relied on gradual improvements in air cooled, solid metal heat sinks to keep pace with change in microprocessor design to provide cost effective solution for removing from microprocessors. In Cray’s XT-4 system, chip power density is expected to almost double that of it’s Red Storm/XT-3 predecessors, while maintaining the same cabinet size.

scholarly journals Design Requirements Document (DRD) for Surface Moisture Measurement System (SMMS)

1995 ◽  
Author(s):  
T. Stokes ◽  
T. Watson ◽  
M. Gimera ◽  
J. Russell ◽  
A. Dabiri ◽  
...  
Keyword(s):  
Measurement System ◽  
Moisture Measurement ◽  
Surface Moisture ◽  
Design Requirements ◽  
Requirements Document

scholarly journals Waste Receiving and Packaging, Module 2A, Supplemental Design Requirements Document

1994 ◽  
Author(s):  
D.L. Lamberd ◽  
G.F. Boothe ◽  
A.L. Hinkle ◽  
R.M. Horgos ◽  
M.D. LeClair ◽  
...  
Keyword(s):  
Design Requirements ◽  
Requirements Document ◽  
Packaging Module

scholarly journals Design Requirements for Direct Supercritical Carbon Dioxide Receiver Development and Testing

2015 ◽  
Author(s):  
Jesus D. Ortega ◽  
Sagar D. Khivsara ◽  
Joshua M. Christian ◽  
Clifford K. Ho
Keyword(s):  
Carbon Dioxide ◽  
Heat Flux ◽  
Supercritical Carbon Dioxide ◽  
Early Stage ◽  
Pressure Vessels ◽  
Section Viii ◽  
Design Requirements ◽  
Technical Challenges ◽  
Requirements Document ◽  
Supercritical Carbon

This paper establishes the design requirements for the development and testing of direct supercritical carbon dioxide (sCO2) solar receivers. Current design considerations are based on the ASME Boiler and Pressure Vessel Code (BPVC). Section I (BPVC) considers typical boilers/superheaters (i.e. fired pressure vessels) which work under a constant low heat flux. Section VIII (BPVC) considers pressure vessels with operating pressures above 15 psig [2 bar] (i.e. unfired pressure vessels). Section III, Division I – Subsection NH (BPVC) considers a more detailed stress calculation, compared to Section I and Section VIII, and requires a creep-fatigue analysis. The main drawback from using the BPVC exclusively is the large safety requirements developed for nuclear power applications. As a result, a new set of requirements is needed to perform detailed thermal-structural analyses of solar thermal receivers subjected to a spatially-varying, high-intensity heat flux. The last design requirements document of this kind was an interim Sandia report developed in 1979 (SAND79-8183), but it only addresses some of the technical challenges in early-stage steam and molten-salt solar receivers but not the use of sCO2 receivers. This paper presents a combination of the ASME BPVC and ASME B31.1 Code modified appropriately to achieve the reliability requirements in sCO2 solar power systems. There are five main categories in this requirements document: Operation and Safety, Materials and Manufacturing, Instrumentation, Maintenance and Environmental, and General requirements. This paper also includes the modeling guidelines and input parameters required in computational fluid dynamics and structural analyses utilizing ANSYS Fluent, ANSYS Mechanical, and nCode Design Life. The main purpose of this document is to serve as a reference and guideline for design and testing requirements, as well as to address the technical challenges and provide initial parameters for the computational models that will be employed for the development of sCO2 receivers.

Developing New Design Requirements to Reduce Failures in Early Complex Systems Design

2013 ◽  
Author(s):  
Bryan M. O’Halloran ◽  
Robert B. Stone ◽  
Irem Y. Tumer
Keyword(s):  
Failure Modes ◽  
Historical Data ◽  
Design Method ◽  
Electrical Power ◽  
Systems Design ◽  
Concept Generation ◽  
Electrical Power System ◽  
Design Requirements ◽  
Rate Design

In this paper, we develop a method that produces recommendations, usable by a designer, that reduce the likelihood of a failure occurring. Prior work introduced the Function Failure Rate Design Method (FFRDM) which uses historical data as evidence to generate new design requirements. This paper presents improvements to FFRDM by including an iterative loop within the method that begins with specific recommendations. This allows evidence from the analysis to support the addition of new requirements and functionality into the design. Once the iterative loop has converged with no new requirements left to generate, all recommendations are used for concept generation. In addition, metrics are developed that can be used later to analyze the design. These metrics are important to ensure that the design has considered the full set of recommendations. Specifically, the updated FFRDM improves the original FFRDM with 1) a systematic and repeatable heuristic to group failure modes and determine which failure modes are predominate, 2) a categorization of the recommendations, 3) metrics built for the recommendations used in concept generation to make them measurable, and 4) using recommendations to develop new requirements and functionality. To show the usefulness of each improvement to FFRDM, a case study using an electrical power system (EPS) is provided.

Sign in / Sign up

Export Citation Format

Share Document