4
TH ST Workshop CHAMONIX
| Session: | Support to Accelerators |
| Chairman: | Pierre Ninin |
| Duration of session: | 105 min. (presentations 70 min., discussions 35 min.) |
| Achieving a "SIL 1" TCR Monitoring System |
| Abstract SIL 1 (Safety Integrity Level 1) refers to the quantification and measurement of the availability, reliability, maintenance and safety of the monitoring system. In the last few years the computer infrastructure used to acquire and to diffuse data to the TCR has evolved very rapidly. A number of measures in hardware, software and management have been introduced to cope with this situation. These include: the Multipurpose Monitoring Device (MMD), a standard data acquisition platform used in the renovation of old front end monitoring equipment, the Smart Equipment Controller (Dsec), a driver that reduces the layers in the data diffusion pyramid, the multiplatform monitoring software to integrate the different SCADA systems, a software configuration tool (RAZOR) for problem tracking and version control, and a complete development environment reproducing a real installation for thorough testing of any changes. To achieve SIL 1 objectives, while mastering the evolution of our systems will be the challenge for the computer team. |
| Web-based distributed System for TOF Experiment Cooling Plant Monitoring |
| Abstract This paper discusses the monitoring and control system for an automated cooling process. The plant is located in an experiment environment and with some distance between the principal components of the system namely the cooling station of the lead target temperature measurements and the TOF experiment control room. TOF experiment operators interact from a SCADA supervisory station through the TCP-IP Ethernet communication channel with the cooling plant. The main issue concerns the degree of automation given to the plant and the SCADA station to greatly ease the TOF control room operation. Another important issue is the real need for TOF physicists and vacuum technicians to access specific operational information in their respective process systems. In this way the availability of the Wizcon® Web-based SCADA applications, which reside on standard Windows NT Web servers, deliver real-time access and historical data to the different applications. The various authorised users can interact with their own applications from any standard Web browser. |
| Regulation System for the 18 kv/90 Mvar Compensators |
| Abstract Two 18 kV/90 Mvar static compensators are involved to stabilise the voltage, filter the harmonics and compensate the reactive power generated by the power converters used to supply the SPS accelerator magnets. The in-house hardware and software used by the regulation systems, difficult to maintain and upgrade, shall be renovated. Industrial solution based on PLC will be implemented. This paper describes the future system and its integration to the Electrical Network Supervisor. |
| Linux in Industrial Control Systems |
| Abstract Today the Linux operating system has become a real alternative for industrial control systems. Linux supports all layers in control systems starting with Real-Time or embedded systems for data acquisition, following with treatment, storage, communication and data adaptation, and finally, with supervision and user interfaces. In the last years the Linux development has grown being incorporated in several industrial systems demonstrating high performance, availability and stability for complex processes in chemical, automobile or petrol industries. In many of these industries Linux architectures have been tested and validated successfully. The new CERN policy supporting Linux, as well as the emergence of cheap and robust Linux solutions, motivates its implementation in our safety control and supervision systems in the near future. |
| BE 400/18 KV Substation Renovation Project |
| Abstract The 400/18 kV SPS main substation was designed for the 400 GeV SPS project and was commissioned in 1974. It has been upgraded several times to form the present 400/66/18 kV SPS and LEP transmission power comprising 490 MVA and 240 MVAR installed power. The beginning of the LHC project and the obsolescence of the main elements, and consequently limited reliability, made it necessary to begin a complete renovation program. The new configuration of the substation will integrate the new compensator of reactive power efficiently into the 18 kV pulsed network. In this way the new compensator will facilitate the functioning of the pulsed network with the new loads and it will improve the performance of the electrical substation. The renovation program consists in a global reorganisation of the substation, with the total replacement of the 18 kV power equipment, a set up of new control and protection systems for the 18 kV and 400 kV section and the reconditioning of all the 400 kV equipment. |
| Target Cooling for the TOF Experiment |
| Abstract In the TOF experiment, a high-energy proton beam is sent on a lead target, which releases an important amount of heat inside. In order to avoid that the target temperature rises over the lead melting point, a cooling system was designed. Starting from the heat distribution generated inside the target by the proton beam, steady and unsteady simulations of the target thermal behavior were carried out. These simulations were performed with different ways of cooling and in the various beam configurations foreseen for the experiment. It will be explained how these simulations helped to design a suitable water cooling system for the target. The hydraulic circuit providing the cool water will be briefly described as well. |
| Progress Report: Static Var Compensator Project for the SPS Electrical Network |
| Abstract This paper gives a progress report on the Static Var Compensator project BEF2 for the SPS electrical network. Following a market survey and a call for tenders, a contract has been awarded to ABB Sweden and the project is now in the phase of detailed performance studies, system design and ordering of the main electrical components. This progress report describes the electrical design, summarises the results of the harmonic filter design studies, discusses the interfacing of the control- and communication system and explains the mechanical layout of the Static Var Compensator and as well as the project co-ordination with the feeding BE substation renovation project. Finally, the project planning is presented and critical paths are evaluated. |
| Consolidation des installations ST/CV du complexe PS |
| Abstract Le PS (Synchrotron à Protons) a été inauguré officiellement le 5 février 1960 et a donné naissance au complexe des machines, lequel a évolué au fil des années. L’augmentation du nombre d'accélérateurs faisant partie du complexe PS, et leurs puissances électriques absorbées, suscite une croissance élevée en besoin de refroidissement. Cette dernière passe de 2 MW en 1960 à 25 MW à la fin des années 70, pour arriver au chiffre de 55 MW en 1998. Durant toutes ces années, les services techniques, hormis la construction des nouvelles installations, maintiennent et exploitent leurs équipements existants malgré les nombreuses contraintes parmi lesquelles sont citées l’âge des installations et leur accessibilité. Pour faire face aux demandes permanentes, afin d'avoir une fiabilité maximum des installations ST/CV, il est nécessaire de les consolider continuellement. Dans le présent document, les travaux de consolidation de ces équipements en vue du futur programme de physique sont présentés, ainsi que les tendances dans les améliorations de leurs performances. |
| Managing Monitoring Information Changes in the TCR |
| Abstract To cope with the continuous requests to introduce more systems to be monitored by the Technical Control Room (TCR), and to keep the existing systems' data up to date, the Technical Control Desk (TCD) service was created at the end of 1999. The TCD offers a single point of entry to all CERN users who are responsible for systems monitored by the TCR, so that they may establish a request for changes. The TCD consists of a set of procedures to be followed by users and TCR operators and a set of computer based tools to record and manage the requests. The TCR pledges to reply to all requests made to the TCD within 48hrs. The implementation of changes in monitored systems involves a number of different activities from cabling, database modifications, and finally testing. The precise details of the changes requested and the activities impacted are recorded by the TCD so that both users and the TCR operators may view the progress of implementation throughout all stages. |
| Electrical Network Supervisor Status Report |
| Abstract During year 2000 CERN has installed the Electrical Network Supervisor (ENS) for the monitoring and control of the equipment of the electrical distribution network located in about 100 substations throughout the different sites. In the first phase the system has been installed in parallel with the original CERN-developed system and databases and mimic diagrams have been prepared to cover parts of the distribution network. The system has been integrated with the general ST supervision systems for alarms monitoring and measurement logging, and the data from the ENS are gradually being integrated. In the second phase an extension of the system has been tested to include a direct industrial interface with the electrical equipment without the need for the existing CERN equipment interfaces. During the 2000-2001 shutdown the supervision will be renovated in a number of zones to operate a complete industrial system covering all aspects of the supervision from equipment interfaces to end-user applications. |
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