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Title: Integrated computer control system architectural overview

Abstract

This overview introduces the NIF Integrated Control System (ICCS) architecture. The design is abstract to allow the construction of many similar applications from a common framework. This summary lays the essential foundation for understanding the model-based engineering approach used to execute the design.

Authors:
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
575338
Report Number(s):
UCRL-ID-128811
ON: DE98051490
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 18 Jun 1997
Country of Publication:
United States
Language:
English
Subject:
99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS; COMPUTERIZED CONTROL SYSTEMS; DESIGN; PROGRAMMING; INFORMATION SYSTEMS; COMPUTERS; MONITORING

Citation Formats

Van Arsdall, P. Integrated computer control system architectural overview. United States: N. p., 1997. Web. doi:10.2172/575338.
Van Arsdall, P. Integrated computer control system architectural overview. United States. doi:10.2172/575338.
Van Arsdall, P. Wed . "Integrated computer control system architectural overview". United States. doi:10.2172/575338. https://www.osti.gov/servlets/purl/575338.
@article{osti_575338,
title = {Integrated computer control system architectural overview},
author = {Van Arsdall, P.},
abstractNote = {This overview introduces the NIF Integrated Control System (ICCS) architecture. The design is abstract to allow the construction of many similar applications from a common framework. This summary lays the essential foundation for understanding the model-based engineering approach used to execute the design.},
doi = {10.2172/575338},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jun 18 00:00:00 EDT 1997},
month = {Wed Jun 18 00:00:00 EDT 1997}
}

Technical Report:

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  • This report describes the design, development and testing of process controls for selected system operations in the Browns Ferry Nuclear Plant (BFNP) Reactor Water Cleanup System (RWCU) using a Computer Simulation Platform which simulates the RWCU System and the BFNP Integrated Computer System (ICS). This system was designed to demonstrate the feasibility of the soft control (video touch screen) of nuclear plant systems through an operator console. The BFNP Integrated Computer System, which has recently. been installed at BFNP Unit 2, was simulated to allow for operator control functions of the modeled RWCU system. The BFNP Unit 2 RWCU systemmore » was simulated using the RELAP5 Thermal/Hydraulic Simulation Model, which provided the steady-state and transient RWCU process variables and simulated the response of the system to control system inputs. Descriptions of the hardware and software developed are also included in this report. The testing and acceptance program and results are also detailed in this report. A discussion of potential installation of an actual RWCU process control system in BFNP Unit 2 is included. Finally, this report contains a section on industry issues associated with installation of process control systems in nuclear power plants.« less
  • This Computer Software Design Description (CSDD) document provides the overview of the software design for all the software that is part of the integrated control and data acquisition system of the Light Duty Utility Arm System (LDUA). It describes the major software components and how they interface. It also references the documents that contain the detailed design description of the components.
  • The CORBA-based Simulator was a Laboratory Directed Research and Development (LDRD) project that applied simulation techniques to explore critical questions about distributed control architecture. The simulator project used a three-prong approach comprised of a study of object-oriented distribution tools, computer network modeling, and simulation of key control system scenarios. This summary report highlights the findings of the team and provides the architectural context of the study. For the last several years LLNL has been developing the Integrated Computer Control System (ICCS), which is an abstract object-oriented software framework for constructing distributed systems. The framework is capable of implementing large event-drivenmore » control systems for mission-critical facilities such as the National Ignition Facility (NIF). Tools developed in this project were applied to the NIF example architecture in order to gain experience with a complex system and derive immediate benefits from this LDRD. The ICCS integrates data acquisition and control hardware with a supervisory system, and reduces the amount of new coding and testing necessary by providing prebuilt components that can be reused and extended to accommodate specific additional requirements. The framework integrates control point hardware with a supervisory system by providing the services needed for distributed control such as database persistence, system start-up and configuration, graphical user interface, status monitoring, event logging, scripting language, alert management, and access control. The design is interoperable among computers of different kinds and provides plug-in software connections by leveraging a common object request brokering architecture (CORBA) to transparently distribute software objects across the network of computers. Because object broker distribution applied to control systems is relatively new and its inherent performance is roughly threefold less than traditional point-to-point communications, CORBA presented a certain risk to designers. This LDRD thus evaluated CORBA to determine its performance and scaling properties and to optimize its use within the ICCS. Both UNIX (Sun Solaris) and real-time (Wind River VxWorks) operating systems were studied. Performance of ICCS deployment was estimated by measuring software prototypes on a distributed computer testbed and then scaled to the desired operating regime by discrete-event simulation techniques. A study of CORBA protocols continues to guide software optimization as NIF software is being implemented and tested. The message-driven nature of distributed control places heavy demands on computers and network switches, so a complementary simulation of network architectures for several protocols was undertaken using a network modeling tool (OPNET Modeler). Additional workflow simulations were developed in a general simulation tool (Simprocess) to assess system behavior of high-stress operational scenarios. Understanding the risks and decisions that trade-off in designing the framework and supporting hardware architecture was enhanced by a concurrent program of simulation and prototype validation of the ICCS applied to the NIF example.« less
  • No abstract prepared.
  • A simulation of the startup time for the ICCS (Integrated Computer Control System ) applied to the National Ignition Facility (NIF) has been performed. The simulation results provide confidence that this requirement can be met. This document describes the results of the simulation that was done using the SIMPROCESS discrete-event-modeling tool. The requirement for start up time established for the NIF control system is: Restarting all computers from a power-down condition shall take less than 30 minutes. This allows quick recovery from a power failure.