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in subjects: "Engineered Safety Systems"

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Spray cooling of heated cylinders

No Description Available.

Date: January 1, 1975

Creator: Harris, S. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Survey of electronic safety systems in accelerator applications

This paper presents the preliminary results and analysis of a comprehensive survey of the implementation of accelerator safety interlock systems from over 30 international labs. At the present time there is not a self consistent means to evaluate both the experiences and level of protection provided by electronic safety interlock systems. This research is intended to analyze the strength and weaknesses of several different types of interlock system implementation methodologies. Research, medica… more

Date: May 1, 1997

Creator: Mahoney, K.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Commercial off the shelf (COTS) software in safety systems

Many safety systems, such as those in nuclear power plants, are systems for which the consequences of failure can be severe or catastrophic. These systems must be developed, implemented, and maintained in ways that provide assurance that catastrophic consequences will be prevented. This paper discusses various aspects of the question of using commercially available software in these systems. Risk, grading, and system assessment are discussed, and relevant standards are summarized. Recommendatio… more

Date: January 25, 1998

Creator: Scott, J.A. & Preckshot, G.G.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Inactive Tanks Remediation Program Batch I, Series I tanks 3001-B, 3004-B, 3013, and T-30 technical memorandum. Environmental Restoration Program

This technical memorandum provides information that can be used to make decisions concerning the disposition of four inactive tank systems that have been designated Batch 1, Series 1, by the Inactive Tanks Remediation Program team. The Batch I, Series 1, tanks are 3001-B, 3004-B, 3013, and T-30. The report offers viable alternatives for tank system disposition. The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) requires a Federal Facility Agreement (FFA) for fede… more

Date: May 1, 1995

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Modular Reliability Modeling of the TJNAF Personnel Safety System

A reliability model for the Thomas Jefferson National Accelerator Facility (formerly CEBAF) personnel safety system has been developed. The model, which was implemented using an Excel spreadsheet, allows simulation of all or parts of the system. Modularity os the model`s implementation allows rapid {open_quotes}what if{open_quotes} case studies to simulate change in safety system parameters such as redundancy, diversity, and failure rates. Particular emphasis is given to the prediction of failu… more

Date: August 1, 1997

Creator: Cinnamon, J. & Mahoney, K.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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ATR/OTR-SY Tank Camera Purge System and in Tank Color Video Imaging System

This procedure will document the satisfactory operation of the 101-SY tank Camera Purge System (CPS) and 101-SY in tank Color Camera Video Imaging System (CCVIS). Included in the CPRS is the nitrogen purging system safety interlock which shuts down all the color video imaging system electronics within the 101-SY tank vapor space during loss of nitrogen purge pressure.

Date: June 6, 1995

Creator: Werry, S.M.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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A high reliability oxygen deficiency monitoring system

The escalating use of cryogens at national laboratories in general and accelerators in particular, along with the increased emphasis placed on personnel safety, mandates the development and installation of oxygen monitoring systems to insure personnel safety in the event of a cryogenic leak. Numerous vendors offer oxygen deficiency monitoring systems but fail to provide important features and/or flexibility. This paper describes a unique oxygen monitoring system developed for the Magnet Test La… more

Date: May 1, 1993

Creator: Parry, R.; Claborn, G.; Haas, A.; Landis, R.; Page, W. & Smith, J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Lightning protection for the process canyons at the Savannah River site

Westinghouse Savannah River Company (WSRC) has performed Lightning Studies for the existing Process Canyons at the Savannah River Site (SRS). These studies were initiated to verify the lightning protection systems for the facilities and to compare the installations to the National Fire Protection (NFPA) Standard 780, Lighting Protection Code, 1992. The original study of the F-Canyon was initiated to develop answers to concerns raised by the Defense Nuclear Facility Safety Board (DNFSB). Once th… more

Date: December 31, 1995

Creator: McAfee, D.E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Development of a guidance document for lightning protection of DOE facilities

The purpose of this guidance document is to introduce Lighting Hazard Management, a unified approach that combines hazard identification and facility categorization (not discussed in this paper) with a new concept -- the Lighting Safety System. We do not intend to develop a brand new lightning code or standard, but rather reference other codes, standards and guides that we determine to be applicable. Using the graded approach to systematic risk management allows for in-depth protection and aids… more

Date: February 6, 1995

Creator: Hasbrouck, R.T. & Majumdar, K.C.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

LANSCE personnel access control system

The Radiation Security System (RSS) at the Los Alamos Neutron Science Center (LANSCE) provides personnel protection from prompt radiation due to accelerated beam. The Personnel Access Control System (PACS) is a component of the RSS that is designed to prevent personnel access to areas where prompt radiation is a hazard. PACS was designed to replace several older personnel safety systems (PSS) with a single modem unified design. Lessons learned from the operation over the last 20 years were inco… more

Date: January 1, 1997

Creator: Sturrock, James C.; Gallegos, Floyd R. & Hall, Michael J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Safety classification of systems 300 area N reactor fuel supply facilities

Classification of the Fuel Supply Shutdown (FSS) safety systems, equipment, and components is presented.

Date: October 10, 1997

Creator: Benecke, M. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Design review report for modifications to RMCS safety class equipment

This report documents the completion of the formal design review for modifications to the Rotary Mode Core Sampling (RMCS) safety class equipment. These modifications are intended to support core sampling operations in waste tanks requiring flammable gas controls. The objective of this review was to approve the Engineering Change Notices affecting safety class equipment used in the RMCS system. The conclusion reached by the review committee was that these changes are acceptable.

Date: May 30, 1997

Creator: Corbett, J.E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Acceptance test report, plutonium finishing plant life safety upgrade

This acceptance Test Procedure (ATP) has been prepared to demonstrate that modifications to the Fir Protection systems function as required by project criteria. The ATP will test the Fire Alarm Control Panels, Flow Alarm Pressure Switch, Heat Detectors, Smoke Detectors, Flow Switches, Manual Pull Stations, and Gong/Door By Pass Switches.

Date: December 2, 1994

Creator: Hodge, S.G.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

The evolution of cryogenic safety at Fermilab

Over the past twenty-five years, Fermilab has been involved in cryogenic technology as it relates to pursuing experimentation in high energy physics. The Laboratory has instituted a strong cryogenic safety program and has maintained a very positive safety record. The solid commitment of management and the cryogenic community to incorporating safety into the system life cycle has led to policies that set requirements and help establish consistency for the purchase and installation of equipment a… more

Date: December 1, 1992

Creator: Stanek, R. & Kilmer, J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Passive safety concepts applied to critical functions

Safety is of paramount concern in todays high technology environment. Because of technological advances, there are numerous situations (high consequence operations) for which the implications of a safety failure are so severe that extreme attention to safety systems is essential. Some of those situations are: nuclear weapon detonation safety, nuclear reactor safety, dam safety, mass transit transportation safety, and hazardous materials transportation and handling safety. In each case, specific… more

Date: March 1, 1995

Creator: Spray, S.D. & Cooper, J.A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Status of the Control System for the CLAS Detector at Jefferson Lab

A control system for Hall B at the Thomas Jefferson National Accelerator Facility is being developed within the framework of the Experimental Physics and Industrial Control System (EPICS). The Hall B equipment currently under EPICS control include numerous beam line devices, high voltage supplies, detector gas systems, and safety systems. The status of the control system is described.

Date: November 1, 1997

Creator: Carroll, T.; Gilmer, A.; Vineyard, M.; Auger, T.; Brooks, W.; Fabbro, S. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

The CEBAF beam loss sensors

The CEBAF beam can burn through the vacuum wall in approximately 100 {mu}s. The authors have developed an inexpensive beam loss sensor that will unambiguously detect a true beam loss and shut off the beam within this time without tripping on moderate interference from other sources. They have incorporated a full system test into the system, with provision for direct replacement of faulty sensors without adjustment. They describe the sensors, the signal processing design, system test results, an… more

Date: May 1, 1993

Creator: Perry, J.; Woodworth, E.; Merminga, L.; Simrock, S.; May, R. & Stapleton, G.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

An overview of semiconductor bridge, SCB, applications at Sandia National Laboratories

The semiconductor bridge, SCB, developed by Sandia National Laboratories is a maturing technology now being used in several applications by Sandia customers. Most applications arose because of a need at the system level to provide explosive assemblies that were light weight, small volume, low cost and required small quantities of electrical energy to function -- for the purposes of this paper we define an explosive assembly to mean the combination of the firing set and an explosive component. A… more

Date: May 1, 1995

Creator: Bickes, R. W., Jr.; Grubelich, M. C.; Harris, S. M.; Merson, J. A. & Weinlein, J. H.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

High speed door assembly

This invention is comprised of a high speed door assembly, comprising an actuator cylinder and piston rods, a pressure supply cylinder and fittings, an electrically detonated explosive bolt, a honeycomb structured door, a honeycomb structured decelerator, and a structural steel frame encasing the assembly to close over a 3 foot diameter opening within 50 milliseconds of actuation, to contain hazardous materials and vapors within a test fixture.

Date: December 31, 1991

Creator: Shapiro, C.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

open access

Content of system design descriptions

A System Design Description (SDD) describes the requirements and features of a system. This standard provides guidance on the expected technical content of SDDs. The need for such a standard was recognized during efforts to develop SDDs for safety systems at DOE Hazard Category 2 nonreactor nuclear facilities. Existing guidance related to the corresponding documents in other industries is generally not suitable to meet the needs of DOE nuclear facilities. Across the DOE complex, different contr… more

Date: October 1, 1998

Item Type: Report

Partner: UNT Libraries Government Documents Department

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TWRS safety SSCs: Requirements and characteristics

Safety Systems, Structures, and Components (SSCs) have been identified from hazard and accident analyses. These analyses were performed to support the Tank Waste Remediation System (TWRS) Final Safety Analysis Report (FSAR) and Basis for Interim Operation (BID). The text identifies and evaluates the SSCs and their supporting SSCs to show that they either prevent the occurrence of the accident or mitigate the consequences of the accident to below the acceptance guidelines. The requirements for t… more

Date: December 30, 1997

Creator: Smith-Fewell, M. A.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

LANSCE radiation security system (RSS)

The Radiation Security System (RSS) is an engineered safety system which automatically terminates transmission of accelerated ion beams in response to pre-defined abnormal conditions. It is one of the four major mechanisms used to protect people from radiation hazards induced by accelerated pulsed ion beams at the Los Alamos Neutron Science Center (LANSCE). The others are shielding, administrative policies and procedures, and qualified, trained personnel. Prompt radiation hazards at the half-mi… more

Date: December 31, 1996

Creator: Gallegos, F.R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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TWRS hydrogen mitigation gas characterization system design and fabrication engineering task plan

The flammable gas watch-list (FGWL) tanks, which have demonstrated a gas release event (GRE) exceeding 0.625% hydrogen by volume will require additional characterization. The purpose of this additional characterization is to accurately measure the flammable and hazardous gas compositions and resulting lower flammability limit (LFL) of the tank vapor space during baseline and GRE emissions. Data from this characterization will help determine methods to resolve the unreviewed safety questions for… more

Date: January 1, 1995

Creator: Straalsund, E.K.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Radiation safety system (RSS) backbones: Design, engineering, fabrication and installation

The Radiation Safety System (RSS) Backbones are part of an electrical/electronic/mechanical system insuring safe access and exclusion of personnel to areas at the Los Alamos Neutron Science Center (LANSCE) accelerator. The RSS Backbones control the safety fusible beam plugs which terminate transmission of accelerated ion beams in response to predefined conditions. Any beam or access fault of the backbone inputs will cause insertion of the beam plugs in the low energy beam transport. The Backbon… more

Date: December 1, 1998

Creator: Wilmarth, J. E.; Sturrock, J. C. & Gallegos, F. R.

Item Type: Article

Partner: UNT Libraries Government Documents Department