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LHC Gas Control System Applications

LHC Gas Control System Applications. G.Thomas, J.Ortola Vidal, J.Rochez EN-ICE Workshop 23 April 2009. Outline. Scope Objectives Strategy/Principles Support and Maintenance Pros & Cons. GCS scope. 4 Experiments ~23 std gas systems to build Commonalities Standard devices

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LHC Gas Control System Applications

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  1. LHC Gas Control System Applications G.Thomas, J.Ortola Vidal, J.Rochez EN-ICE Workshop23 April 2009

  2. Outline • Scope • Objectives • Strategy/Principles • Support and Maintenance • Pros & Cons

  3. GCS scope • 4 Experiments ~23 std gas systems to build • Commonalities • Standard devices • Valves, flow meters, mass flow controllers, etc… • Limited number of exotic devices (Webmas, ELMB ) • Modular architecture • Mixer, Distribution, Pump, Analysis, Purifier, etc… • Diversity • Optional modules • Options in modules

  4. GCS diversity

  5. GCS objectives • -> Provide homogeneous end-user applications • What we handle • Build turnkey control application • Supervision layer • Synoptic views and navigation, alarm handling, recipes, etc… • Process Control layer • I/O, steppers, interlock, common logic, etc… • Define and setup the control infrastructure for each Experiment • What we do not handle • Setup and configuration of hardware equipments and instrumentation

  6. GCS strategy/principles • Strategy • Gas systems’ architecture based on a generic model • Use industrial technologies • SCADA, PLC, fieldbuses • Use of UNICOS FW and code generator tools • Principles • Model-oriented design for both • Supervision & Process control layers • Tools • To produce automatically the PVSS and PLC code of any GCS instance

  7. Dev. Phases/interactions with customer EN-ICE • Capture of the functional requirements of the systems for the process & supervision layers • Agreement on the needs between provider & customer Provider (EN-ICE) Gas Expert (PH-DT1) EN-ICE Validation of the application in the lab • Design • Code implementation • Tests (logic, IO signals, etc…) • Packaging URD Release EN-ICE Installation of the new application in-situ • Loading of PLC application • Setup of PVSS application • Load of pre-defined parameters (recipes) • Pass the system to Gas experts Deployment PH-DT1 Tests of application before production • Hardware connection tests • Functional tests (critical interlocks, etc…) • Final tuning of thresholds & set points • Training of Gas team members Commissioning

  8. GCS operational support • Type of support cases • Bad configuration parameters (archive, deadband, stop of plc, etc…) • Exp.Infrastructure problems (remote access, dip setup, etc…) • Support level • First line (PH-DT1 gas piquet) • Second line support based on best effort (EN-ICE) • Tools • Remedy to handle bugs or requests • Savannah for bug & patch tracking

  9. GCS maintenance and upgrades • Type of upgrades • New version of software/firmware for PVSS (UNICOS FW) or PLC (baseline) • New system/modules to integrate • Bug fixes • Methodology • Any new request is first analyzed in URD before implemented • Validation done in lab • Tools • Configuration source code management tools (CVS, savannah)

  10. GCS Pros and Cons • Pros • Based on existing software control libraries (UNICOS FW). • Keep source code repository always up-to-date. • Keep homogeneity across systems. • Open architecture –extensibility/flexibility. • Autonomy of users during commissioning and operation. • Cons • Any modification requires an upgrade in various places. • No control on equipment setup and configuration. • Synchronization between PH-DT1 and EN-ICE for tests. • Software version dependencies.

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