| Extending a Missions and Means Framework (MMF) Demonstration to Vulnerability/Lethality Data Production |
14-Dec-2005 |
20 pages |
| Authors:
Beth Ward; ARMY RESEARCH LAB WHITE SANDS MISSILE RANGE NM COMPUTATIONAL AND INFORMATION SCIENCE DIRECTORATE
|
 | The Missions and Means Framework (MMF) allows direct application of warfighter tasks. Battlefield Operating Systems (BOS) have been mapped to platform subclasses, individual platforms in those classes, and associated tasks. The system of systems fault trees allow the program to show the effects of degraded capability states at both the platform and component level. This allows exploration of alternative courses of action. MMF helps to establish a closer communication between ... |
|
| Missions and Means Framework (MMF) Demonstration: The Storyboard Model |
Dec-2005 |
27 pages |
| Authors:
Richard S Sandmeyer; ARMY RESEARCH LAB WHITE SANDS MISSILE RANGE NM COMPUTATIONAL AND INFORMATION SCIENCE DIRECTORATE
|
| In the Missions and Means Framework (MMF), platform state is represented by its current capabilities, which can be compared to current task requirement(s), instead of by a weighted average of probability of having/not having functionality to perform randomly selected mission. Better representation of residual platform and (ultimately) unit capabilities throughout simulation should enable better representation of resource allocation/reallocation. The decomposition of missions into low-level tasks allows cleaner and simpler modeling ... |
|
| Prediction and Improvement of Safety in Software Systems |
07 SEP 2005 |
74 pages |
| Authors:
Sean A. Jones; NAVAL ACADEMY ANNAPOLIS MD
|
| The modern military's ability to fight depends heavily on complex software systems, making the safety of such of software of paramount importance. The transformation of the military's analog combat systems to computer-based systems has been plagued by software problems ranging from benign flight simulator issues to 'smart' ships finding themselves dead in the water. The military's interest in increasing automation in order to reduce manpower requirements makes even trivial software ... |
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| Unexploded Ordnance: A Critical Review of Risk Assessment Methods |
2004 |
|
| Authors:
Jacqueline MacDonald; Debra Knopman; J. R. Lockwood; Gary Cecchine; Henry Willis; RAND ARROYO CENTER SANTA MONICA CA
|
 | Unexploded ordnance (UXO) and munitions constituents' on former military bases in the United States are causing increasing concern. While civilian fatalities from UXO explosions on U.S. soil have been rare, the risk of such accidents could increase substantially as more closed bases are transferred from military to civilian control. Since the end of the Cold War, approximately 20 percent of major domestic military bases and many smaller ones have been ... |
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| Using Supervised Learning Techniques for Diagnosis of Dynamic Systems |
19 SEP 2002 |
7 pages |
| Authors:
Pedro J. Abad; Antonio J. Suarez; Rafael M. Gasca; Juan A. Ortega; UNIVERSIDAD DE HUELVA CANTERO (SPAIN)
|
| This paper describes an approach based on supervised learning techniques for the diagnosis of dynamic systems. The methodology can start with real system data or with a model of the dynamic system. In the second case, a set of simulations of the system is required to obtain the necessary data. In both cases, obtained data will be labelled according to the running conditions of the system at the gathering data ... |
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| Deterministic Casualty Analysis of the Pebble Bed Modular Reactor for use with Risk-Based Safety Regulation |
SEP 2002 |
|
| Authors:
Jon E. Withee; MASSACHUSETTS INST OF TECH CAMBRIDGE
|
| The resurgence of interest in the use of nuclear technology for electrical power production has resulted in a desire to improve the existing licensing structure. Improving the licensing structure will result in reduced design time and cost for new reactor plants. An improved regulatory process is also necessary in order to license advanced reactors that are not light water technology. Risk based reactor licensing, which uses the Probabilistic Risk Assessment ... |
|
| Thirteenth International Workshop on Principles of Diagnosis (DX-2002) |
MAY 2002 |
196 pages |
| Authors:
Markus Stumptner; Franz Wotawa; TECHNISCHE UNIV VIENNA (AUSTRIA)
|
| The Final Proceedings for Thirteenth International Workshop on Principles of Diagnosis (DX-2002), 2 May 2002 - 4 May 2002. This workshop is based on the area of artificial intelligence. The focus of this year's event is on theories, principles and computational techniques for diagnosis, testing, reconfiguration and repair of complex systems. Specific topics of interest to the Air Force include: formal methods and computational methods, modeling (symbolic, numeric, discrete, continuous, ... |
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| An Overview of the Modular Effectiveness/Vulnerability Assessment (MEVA) Architecture |
1999 |
6 pages |
| Authors:
David B. Watts; AIR FORCE RESEARCH LAB EGLIN AFB FL MUNITIONS DIRECTORATE
|
| The Modular Effectiveness Vulnerability Assessment - Ground Fixed (MEVA-GF) is an engineering tool for assessing the vulnerability of fixed ground targets to conventional weapon attack. MEVA-GF is a graphical user interface (GUI) based program that provides an architecture for assembling an assessment model or simulation in modular fashion. Individual modules representing the weapon, target, weapon delivery, penetration, blast, fragmentation, etc. are linked together using a data flow paradigm that creates ... |
|
| Re-Engineering Paper Technical Manual's Troubleshooting Procedures |
1998 |
13 pages |
| Authors:
Li P. Su; ARMY TEST MEASUREMENT AND DIAGNOSTIC EQUIPMENT ACTIVITY REDSTONE ARSENAL AL
|
| As the Department of Defense (DoD) downsizes there is a great need to reduce the cost and manpower burden associated with maintenance of weapon systems. Traditionally, technical manuals used for field maintenance of DoD systems have relied heavily on troubleshooting procedures, which are presented in "flow chart" format of fault trees. These flow charts guide the maintainer through test procedures to isolate parts that cause equipment ... |
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| Boolean Algebraic Methods for Phased-Mission System Analysis |
JAN 97 |
22 pages |
| Authors:
Arun K. Somani; Kishor S. Trivedi; INSTITUTE FOR COMPUTER APPLICATIONS IN SCIENCE AND ENGINEERING HAMPTON VA
|
| Most reliability analysis techniques and tools assume that a system is used for a mission consisting of a single phase. However, multiple phases are natural in many missions. The failure rates of components, system configuration, and success (failure) criteria may vary from phase to phase. In addition, the duration of a phase may be deterministic or random. We describe a new technique for phased-mission system reliability analysis based on Boolean ... |
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| The Need for a Probabilistic Risk Assessment of the Oil Tanker Industry and a Qualitative Assessment of Oil Tanker Groundings |
JUN 96 |
|
| Authors:
Michael D. Amrozowiez; MASSACHUSETTS INST OF TECH CAMBRIDGE
|
| The culture, design, and operation of the maritime industry all contribute to create an error-inducing system. As oil tankers have become larger, the tolerance for error has decreased as the consequences have increased. Highly visible oil spills have made society more aware of the dangers inherent with transporting oil at sea. A probabilistic risk assessment (PRA) provides a formal process of determining the full range of possible adverse occurrences, probabilities, ... |
|
| The Quantitative Risk of Oil Tanker Groundings |
JUN 96 |
|
| Authors:
Michael D. Amrozowicz; MASSACHUSETTS INST OF TECH CAMBRIDGE
|
| The culture, design, and operation of the maritime industry all contribute to create an error-inducing system. As oil tankers have become larger, the tolerance for error has decreased as the consequences have increased. Tankers are the largest contributor by vessel type to worldwide oil spill volume. Human error has consistently been attributed to 80 percent of the marine accidents. A closer look reveals that many accidents attributed to human error ... |
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| Critical Failure Mode Analysis Of The Petite Amateur Navy Satellite (PANSAT) |
SEP 95 |
174 pages |
| Authors:
David W. Allridge; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| System reliability analysis is an essential element is the design process. A reliability study should proceed from system inception through final deployment. As the PANSAT project approaches the final design stage and begins initial flight production, the absence of any significant reliability analysis becomes increasingly troubling. This thesis initiates the program's reliability analysis obligation by investigating spacecraft failure modes. Typically referenced as critical failure modes, these events will cause complete ... |
|
| The MAVEN Approximation Method within the MUVES Environment |
JUL 95 |
41 pages |
| Authors:
Mark D. Burdeshaw; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| The Modular Air-System Vulnerability Estimation Network (MAVEN) is a stochastic, pointburst model for all classes of air targets to include fixed, and rotary-wing aircraft and missiles. MAVEN is an approximation method under the Modular UNix-based Vulnerability Estimation Suite (MUVES) and follows the Ballistic Vulnerability/Lethality Division (BVLD) Vulnerability/Lethality (VIL) process structure. MAVEN is intended to be used during all phases of the acquisition life cycle, from research and development through test ... |
|
| Proceedings of the Annual Symposium on Computational Geometry (10th) Held at Stony Brook, New York on 6-8 June, 1994 |
JUN 95 |
406 pages |
| Authors:
Joseph Mitchell; STATE UNIV OF NEW YORK AT STONY BROOK
|
| This proceedings contains the 42 contributed papers which were selected from a total of 113 submitted extended abstracts. The program committee met in Arlington, Virginia, on January 21-22,1994. The selection was based on the quality and originality of the results and their relevance to computational geometry. The papers generally represent preliminary reports of ongoing research and it is expected that most of them will eventually ... |
|
| Fault Isolator Tool for Software Fault Tree Analysis |
MAR 95 |
77 pages |
| Authors:
Russell W. Mason; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Software Fault Tree Analysis (SETA) is a technique used to analyze software for faults that could lead to hazardous conditions in systems which contain software components. A necessary element of a SETA process is the construction of software fault trees based upon the syntactical structure of the software being analyzed. The specific problem addressed by this thesis is how can the process of generating software fault trees based upon the ... |
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| Rationale for the Modular Air-System Vulnerability Estimation Network (MAVEN) Methodology |
SEP 94 |
26 pages |
| Authors:
Lisa K. Roach; ARMY RESEARCH LAB WATERTOWN MA MATERIALS DIRECTORATE
|
| The air community has long had a need for a new vulnerability/ lethality (V/L) methodology, one usable by the triservice community. Current models range from manual calculations of total vulnerable area (Av) to complex models of incendiary functioning, fragment penetration, and fire initiation with component fault tree damage modes. Most, if not all, of these models make use of expected value, or deterministic, methods which do not accurately reflect the ... |
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| A Fast Recursive Algorithm to Compute the Probability of M-out-of-N events |
MAY 94 |
14 pages |
| Authors:
G. E. Radke Jr.; J. Evanoff; PHILLIPS LAB KIRTLAND AFB NM
|
| The successful performance of systems (power plants, aircraft, missiles, spacecraft, etc.) while degraded due to either man-made or natural stimuli is currently of interest to the survivability/vulnerability assessment communities. The fault tree model has long been used to qualify and quantify the likelihood of these degraded states. This report details the use of a particular recursive algorithm which is based on the 2-out-of-3 principle for M-out-of-N gates. Software currently available ... |
|
| GRAFTED - GRAphical Fault Tree EDitor: A Fault Tree Description Program For Target Vulnerability/Survivability Analysis. User Manual |
DEC 93 |
|
| Authors:
Michael E. Buckland; Mark Webster; Frank J. Tkalcevic; MATERIALS RESEARCH LABS ASCOT VALE (AUSTRALIA)
|
| A computer program GRAFTED, GRAphical Fault Tree EDitor , has been written to simplify data entry and modification of component fault tree descriptions (FTD) used in military platform vulnerability/survivability analysis. GRAFTED uses a unique, graphical, screen based data entry procedure to define and display both individual system component parameters, and their hierarchical relationship in the overall system FTD. The generated component and system FTD output is in a format ti-iat ... |
|
| An Automated Tool To Facilitate Code Translation for Software Fault Tree Analysis |
SEP 93 |
211 pages |
| Authors:
Robert R. Ordonio; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| A safe system is defined as a system that prevents unsafe states from producing safety failures, where an unsafe state is defined as a state that may lead to safety failure unless some specific action is taken to avert it. The problem that this thesis addresses is how to find places in Ada programs where faults are likely to occur during program execution. The approach is to build an automated ... |
|
| Fault Tree Analysis and Extensions of the V/L Process Structure |
JUN 93 |
46 pages |
| Authors:
Lisa K. Roach; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| The Ballistic Vulnerability/Lethality Division (BVLD), Survivability/ Lethality Analysis Directorate (SLAD), of the Army Research Laboratory (ARL) is involved in a variety of programs that require detailed information about the required capabilities of combat equipment. First, the BVLD is conducting a series of full-scale vulnerability test on a number of combat systems. Prior to these full-scale tests, analytical vulnerability analyses are performed to aid in the development of the test plan ... |
|
| Safety Study of TCAS II for Logic Version 6.04 |
JUL 92 |
99 pages |
| Authors:
Michael F. Mclaughlin; Andrew D. Zeitlin; MITRE CORP MCLEAN VA
|
| A new System Safety Study of Traffic Alert and Collision Avoidance System II (TCAS II) was performed to compare the safety of logic version 6.04 with the present version 6.0. The study uses a considerable body of encounter data extracted from Automated Radar Terminal System (ARTS) ground-based radar data at eight U.S. sites. Encounter geometries are modeled using the statistics of the observed data. The performance of TCAS logic is ... |
|
| The Degraded States Weapons Analysis Research Simulation (DSWARS): An Investigation of the Degraded States Vulnerability Methodology in a Combat Simulation |
FEB 91 |
51 pages |
| Authors:
Gary R. Comstock; ARMY MATERIEL SYSTEMS ANALYSIS ACTIVITY ABERDEEN PROVING GROUND MD
|
| DSWARS (Degraded States Weapons Analysis Research Simulation) is a ground based combat simulation model written to implement the Ballistic Research Laboratory's (BRL) new vulnerability metrics using degraded states. The new metrics replace the standard mobility and firepower kill values derived from averaging probabilities and percent of functional loss (SDAL-Standard Damage Assessment List) values. They provide probabilities of a system being in a specific degraded-state, which are defined by a series ... |
|
| Safety Analysis of Heterogeneous-Multiprocessor Control System Software |
DEC 90 |
63 pages |
| Authors:
Janet A. Gill; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Fault trees and Petri nets are two widely accepted graphical tools used in the safety analysis of software. Because some software is life and property critical, thorough analysis techniques are essential. Independently Petri nets and fault trees serve limited evaluation purposes. This thesis presents a technique that converts and links Petri nets to fault trees and fault trees to Petri nets. It enjoys the combinational benefits of both analysis tools. ... |
|
| Assessment, Fault Tree Analysis and Solution of Ammunition Kickout Problem |
APR 90 |
50 pages |
| Authors:
Richard B. Shipe; Thomas A. Lucas; ARMY COMBAT SYSTEMS TEST ACTIVITY ABERDEEN PROVING GROUND MD
|
| A study was conducted by the U.S. Army Combat Systems Test Activity at Aberdeen Proving Ground, MD to define ammunition kickout and the mechanisms that lead to its occurrence. A literature search and a fault tree analysis were conducted. It was concluded that a round of ammunition can be kicked out only when a complex sequence of events occurs, also the risk associated with kickout can be mitigated by selectively ... |
|
| Techniques for Developing a System Safety Risk Assessment Model |
APR 90 |
|
| Authors:
Martin Mossa; Thomas A. Lucas; ARMY COMBAT SYSTEMS TEST ACTIVITY ABERDEEN PROVING GROUND MD
|
| A study was conducted by the U.S. Army Combat Systems Test Activity at Aberdeen Proving Ground, MD, to determine if existing data collected by that activity could be used to conduct a quantitative risk assessment. The results of this study indicate that the data are not only available but also in a usable form to conduct quantitative risk assessments. The results of the risk assessment will provide project managers with ... |
|
| Passenger Carrying Submersibles: System Safety Analysis |
AUG 89 |
226 pages |
| Authors:
William T. Hathaway; Stephanie H. Markos; TRANSPORTATION SYSTEMS CENTER CAMBRIDGE MA
|
| During the past few years, several private companies have been using passenger carrying submersibles to conduct underwater sightseeing tours for tourists. For submersible operations under U.S. jurisdiction, the Coast Guard is required by law to establish and enforce a certain minimum level of safety for vessels. The existing Coast Guard statutes and regulations were developed primarily for surface craft; many of the requirements cannot be applied to or are inappropriate ... |
|
| Fault Tolerant Systems Analysis: Dynamic Combinatorial Models |
30 JUN 89 |
8 pages |
| Authors:
Joanne B. Dugan; DUKE UNIV DURHAM NC DEPT OF COMPUTER SCIENCE
|
| The problems that arise during reliability analysis of a fault tolerant computer system can be broadly classified into those relating to the construction of the model, and those relating to the solution of the model. The construction of a model of a complex fault tolerant system consists of selecting an appropriate 'language' for the description of the system, abstracting the important characteristics of the system to be studied, and expressing ... |
|
| Fault Tree Reliability Analysis of the Naval Postgraduate School Mini- Satellite (ORION) |
SEP 87 |
|
| Authors:
Trenton G. Keeble; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Fault tree analysis, which has proved to be a useful analytical tool for the reliability and safety analysis of complex systems, is applied to the Naval Postgraduate School Mini-Satellite (ORION). A general background to reliability analysis, fault tree analysis, and fault tree construction is given. Impact of a phased mission is included in the analysis. A fault tree for ORION is constructed and used to indentify minimal cut sets and ... |
|
| M55 Rocket Disposal Program Study M55-CD-9. Analysis of Risks Associated with Operation of the JACADS (Johnston Atoll Chemical Agent Disposal System) M55 Rocket Demilitarization Plant |
22 NOV 85 |
|
| Authors:
Paul A. Croce; R. P. Stickles; Lisa M. Bendixen; A. A. Balasco; Peter Athens; LITTLE (ARTHUR D) INC CAMBRIDGE MA
|
| Risks associated with the operation of the JACADS(Johnston Atoll Chemical Agent Disposal System) M55 rocket demilitarization plant were analyzed in terms of possible events that would lead to the release of either GB or VX agent to the atmosphere. These events were quantified by the amount of agent released and the probability of occurrence. Identification of release events was accomplished by conducting a hazard and operability study of the plant ... |
|
| M55 Rocket Disposal Program Study M55-CD-11. Analysis of Risks Associated with Operation of the CAMDS M55 Rocket Demilitarization Plant |
22 NOV 85 |
|
| Authors:
Paul A. Croce; R. P. Stickles; Lisa M. Bendixen; Armand A. Balasco; Peter Athens; LITTLE (ARTHUR D) INC CAMBRIDGE MA
|
| Risk associated with the operation of the CAMDS(Chemical Agent Munition Disposal System) M-55 rocket demilitarization plant were analyzed in terms of possible events that would lead to the release of either GB or VX agent to the atmosphere. These events were quantified by the amount of agent released and the probability of occurrence. Identification of release events was accomplished by conducting a hazard and operability study of the plant design ... |
|
| Simulation of Area Weapons Effects (SAWE) Safety Criteria |
SEP 85 |
34 pages |
| Authors:
S. Hoxha; J. E. Elliott; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ SAFETY OFFICE
|
| This report provides quantified safety criteria for the Simulation of Area Weapons Effects (SAWE) Program. It discusses four specific areas: blast overpressure, blunt trauma, burn, and eye flash hazards. Each hazard is defined as to potential severity and classified according to Army regulation hazard severity levels. Acceptable risk criteria are developed based on severity and probability. |
|
| Probabilistic Analysis of Fault Trees Using Pivotal Decomposition |
JUN 85 |
|
| Authors:
W. T. McCullers III; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| In this thesis an algorithm is presented for computing the exact failure probability for binary systems represented as fault trees. This algorithm does not rely on cut sets. Instead, it applies recursive pivotal decomposition together with probabilistic structural reductions and modularization directly to the fault tree. A further capability of the algorithm is the sequential printing of equations to form a function for a specific fault tree which computes system ... |
|
| Reliability Evaluation of Fault-Tolerant Multiprocessor Systems |
14 MAY 85 |
|
| Authors:
K. S. Trivedi; DUKE UNIV DURHAM NC DEPT OF COMPUTER SCIENCE
|
| The major issues involved in modeling modern computer systems can be broadly classified into those arising form the model construction, model reduction and solution, and in the interpretation of the model solution. Modeling languages such as fault trees, the PMS notation, and Extended Stochastic Petri Nets can be valuable in simplifying the task of model construction. The goal of the languages is to provide well defined constructs to the user ... |
|
| Performance and Reliability Analysis Using Directed Acyclic Graphs |
04 APR 85 |
|
| Authors:
R. A. Sahner; K. S. Trivedi; DUKE UNIV DURHAM NC DEPT OF COMPUTER SCIENCE
|
| A computer powerful model for the stochastic analysis of directed acyclic graphs is developed. These graphs represent event-precedence networks where events may occur serially, probabilistically, or concurrently. When a set of events occurs concurrently, the condition for the set of events to complete is that any specified number of the events must complete. This includes the special cases that one or all of the events complete. The distribution function associated ... |
|
| Aircrew Automated Escape Systems (AAES) In-Service Usage Data Analyses. Volume 2. Papers Presented at the Annual SAFE Symposium (21st), San Antonio, Texas, 5,6,7,8 November 1983 |
05 NOV 1983 |
|
| Authors:
C. W. Stokes III; G. R. Herd; F. G. Guill; J. F. Palmer; NAVAL WEAPONS ENGINEERING SUPPORT ACTIVITY WASHINGTON DC
|
| Partial contents of Volume II; Mishap Investigation/Reportage: The Flight Surgeon's Report from a data user's viewpoint (reprint), Aircrew Life Support Systems (ALSS), Post Emergency Usage Investigation Guides--Aircrew protection helmets, Oxygen equipment; man-mounted; Aircrew personnel flotation equipment (Life preservers), Survival vests, and Integrated torso harness, and Aircrew Life Support Equipment Post-Usage Investigation/Reportage generic decision tree; Associated Data Appendices--Neck injury cases data, Maintenance error major malfunction cases data, and Fault tree Bad ... |
|
| Ship Collisions with Bridges: The Nature of the Accidents, Their Prevention and Mitigation |
OCT 1983 |
|
| Authors:
NATIONAL RESEARCH COUNCIL WASHINGTON DC MARINE BOARD
|
| This report provides a review of accident records of ship collisions with bridges in coastal ports and harbors, and of consideration important to preventing and mitigating such accidents--ship maneuverability in restricted waterways; dynamics of ship collisions with bridges; siting , design, geotechnical analysis and engineering criteria; protective and mitigative strategies; risk and hazards analysis. The report treats regulatory and institutional matters, and offers conclusions and recommendations. |
|
| The Application of Fault Tree Analysis to an Anti-Aircraft Warfare Model |
SEP 1983 |
|
| Authors:
T. J. Flaherty; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Fault Tree Analysis is a method implemented through the use of logic symbols, for analyzing either qualitatively or quantitatively the events that lead to a mission or system failure. This work examines an Anti-Aircraft Warfare (AAW) scenario restricted to the defense of an aircraft carrier. A fault tree of the events that lead to a hit on the carrier is displayed logically from the top down. Fault tree analysis when ... |
|
| Total System Hazards Analysis for the Western Area Demilitarization Facility at Hawthorne Army Ammunition Plant |
DEC 82 |
61 pages |
| Authors:
Ronald Pape; Charles Heilker; IIT RESEARCH INST CHICAGO IL CHEMISTRY DIV
|
| In this report, the results of a hazards analysis of the Western Area Demilitarization Facility (WADF) at Hawthorne, Nevada are summarized. The details of the analyses are provided in three reports (references 1, 2 and 3) and are not repeated in this document. Each of the detailed reports consists of two volumes. Volume 1 is a summary of the analysis results with appendices covering special problem areas. Volume 2 contains ... |
|
| Reliability Analysis of Large Commercial Vessel Engine Room Automation Systems. Volume 1. Results |
NOV 1982 |
282 pages |
| Authors:
C. E. Davis; W. C. Graham; DOVAP AND ASSOCIATES PLAYA DEL REY CA
|
| This report documents a reliability study of large (1,600 tons and over) commercial vessel engine room automation systems. The total effort involved conducting a literature search on maritime automation and reliability topics, analyzing the engine room automations systems on two steam vessels and one diesel vessel, conducting a criticality evaluation, preparing reliability- related design and performance criteria, and evaluating reliability aspects of preventative maintenance. For the vessels evaluated, Failure Modes ... |
|
| An Algebraic Structure for the Convolution of Life Distributions |
OCT 1982 |
|
| Authors:
Danny L. Hogg; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| In this paper one method for analytically describing the life distribution of a system is investigated. This is done by using the inherent properties of convolutions and mixtures of life distributions to create an algebraic structure. Once the algebraic structure is constructed it can be used to develop algorithms to go from the schematic of a system to its survival function. It is noted along the way that many combinations ... |
|
| Programming Environments Based on Structured Editors: The MENTOR experience |
JUL 1980 |
|
| Authors:
Veronique Donzeau-Gouge; Gerard Huet; Gilles Kahn; Bernard Lang; INSTITUT NATIONAL DE RECHERCHE D'INFORMATIQUE ET D'AUTOMATIQUE ROCQUENCOURT (FRANCE)
|
| This note discusses the MENTOR program manipulation system, from the following points of view: the main design decisions made in MENTOR; the authors' experience with building and using a PASCAL programming environment based on MENTOR; and the authors' vision of a complete programming environment. |
|
| FLAT: A FORTRAN Language Augmentation Tool, |
JUL 1980 |
|
| Authors:
Leon J. Osterweil; Eugene W. Myers Jr; COLORADO UNIV AT BOULDER DEPT OF COMPUTER SCIENCE
|
| This paper describes the motivation, design, implementation, and some preliminary performance characteristics of FLAT, a macro definition capability for creating language enhancors and translators. FLAT enables the user to specify transformations through STREX, a FORTRAN-like language, which enables the specification of macros which are then used to interpretively alter incoming programs. FLAT is specially adapted to the processing of FORTRAN programs. This paper shows how it can be used as ... |
|
| Study of Deepwater Port Oil Transfer Control Systems. |
JUN 1978 |
|
| Authors:
Ian C. Robson; William W. Scherkenbach; HARRIS (FREDERIC R) INC NEW YORK
|
| This report deals with the description, reliability and rating of oil transfer control systems in Deepwater ports. A typical oil transfer control system is hierarchically defined along with equipment description and purpose, reliability, spill risk, effects of failure and alternative procedures. A numerical rating system is presented which enables the design reviewer to compare a proposed control system with a benchmark system. Equipment Staging Diagram, Fault Trees and a Failure ... |
|
| Optimal State Detection Policies for Coherent Systems. |
NOV 1977 |
|
| Authors:
Yosi Ben-Dov; CALIFORNIA UNIV BERKELEY OPERATIONS RESEARCH CENTER
|
| The problem of minimizing the expected cost of identifying the state of a coherent system (as functioning or failed) is considered. The system is composed of components, and only individual components can be tested. Efficient algorithms are presented for some special cases of coherent systems: series, parallel, parallel-series, series-parallel and k-out-of-n systems. The concept of the Importance of Components is used to develop a branch and bound algorithm which determines ... |
|
| Fault Trees: Sensitivity of Estimated Failure Probabilities to Problem Representation. |
AUG 1977 |
|
| Authors:
Baruch Fischhoff; Paul Slovic; Sarah Lichtenstein; DECISIONS AND DESIGNS INC MCLEAN VA
|
| Fault trees represent problem situations by organizing things that could go wrong into functional categories. Such trees are essential devices for analyzing and evaluating the fallibility of complex systems. They follow many different formats, sometimes by design, other times inadvertently. Major results were: people were quite insensitive to what had been left out of a fault tree, increasing the amount of detail for the tree as a whole or just ... |
|
| Fault Diagnosis of Semiconductor Random Access Memories. |
MAY 1977 |
|
| Authors:
Satish Mukund Thatte; ILLINOIS UNIV AT URBANA-CHAMPAIGN COORDINATED SCIENCE LAB
|
| This report deals with the problems of testing semiconductor random access memories and of locating faults on a memory board. Memory test procedures can be divided into three classes, functional testing, pattern sensitivity testing and DC parametric testing. Existing test procedures for testing semiconductor memories are either limited in their fault coverage or require a prohibitive amount of time. A new functional test procedure based on a fault model that ... |
|
| Reliability Estimating Procedures for Electric and Thermochemical Propulsion Systems. Volume I. |
FEB 1977 |
298 pages |
| Authors:
BOOZ-ALLEN APPLIED RESEARCH BETHESDA MD
|
| The primary objective of this study was to develop a sound standardized basis for reliability comparisons of thermochemical and electric propulsion concepts applicable to Air Force satellite, spacecraft, and upper-stage mission requirements. A corollary objective was the identification of those propulsion system components which are currently the major contributors to propulsion system failures. Nearly one hundred component level and failure mode level models were developed in the course of the ... |
|
| Incident/Accident Survey (1950 through 1974). |
DEC 1975 |
18 pages |
| Authors:
Fred L. McIntyre; GENERAL ELECTRIC CO BAY SAINT LOUIS MSENGINEERING AND SCIENCE SERVICES LAB
|
| The initial undertaking was limited to a literature survey of accident/incident summaries of various reporting agencies. It was not intended to pit one facility/organization versus the next, but to generate a maximum amount of data in the shortest time to be utilized in statistical inferences and to provide input for fault-tree type analysis per MIL STD 882 and AMCR 388-4. Specifically, this survey was interested in manufacturing operation and pyrotechnic ... |
|
| Analysis of Deluge System, Bulk HE. |
DEC 1975 |
|
| Authors:
William J. Coffey; PICATINNY ARSENAL DOVER N J
|
| A safety oriented design analysis is described covering an explosion proof, fire detection and protection system for conveyors transporting high explosives at fixed distances. The analysis was made on the system as the design evolved under a separate study contract. The design analysis was performed in conjunction with a comprehensive Fault Tree Analysis. A preliminary Fault Tree was prepared free hand. Computer codes were then used to construct a final ... |
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FAULT TREES
