Guidance for Use of CSM Recommendation - ERA - Europa

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Risk Management European Railway Agency Collection of examples of risk assessments and of some possible tools supporting the CSM Regulation 2. DESCRIPTION OF THE RISK ASSESSMENT PROCESS 2.1. General description - Correspondence between the CSM risk assessment process and the CENELEC V-cycle 2.1.1. The risk assessment process is the overall iterative process that comprises: (a) the system definition; (b) the risk analysis including the hazard identification; (c) the risk evaluation. The risk assessment process shall interact with the hazard management according to section 4.1. [G 1] The risk management process covered by the CSM can be represented within a V-Cycle that starts with the (preliminary) system definition and that finishes with the system acceptance: see Figure 4. This simplified V-Cycle can be mapped then on the classical V-Cycle in Figure 10 of the EN 50 126-1 standard {Ref. 8}. In order to show the correspondence of the CSM risk management process in Figure 1, the CENELEC V-Cycle in Figure 10 is recalled in Figure 5: (a) the "preliminary system definition" of the CSM in Figure 1 corresponds to the Phase 1 in CENELEC V-Cycle, i.e. to the definition of the system "concept" (see BOX 1 in Figure 5); (b) the "risk assessment" of the CSM in Figure 1 includes the following phases of the CENELEC V-Cycle (see BOX 2 in Figure 5): (1) Phase 2 in Figure 5: "system definition and application conditions"; (2) Phase 3 in Figure 5: "risk analysis"; (3) Phase 4 in Figure 5: "system requirements"; (4) Phase 5 in Figure 5: "apportionment of system requirements" down to the different sub-systems and components. ² Demonstration of Compliance with the Safety Requirements Preliminary System Definition System Acceptance Safety Requirements (CSM) Risk Assessment Figure 4 : Simplified V-Cycle of Figure 10 of EN 50 126 standard. Reference: ERA/GUI/02-2008/SAF Version: 1.1 Page 32 of 105 File Name: Collection_of_RA_Ex_and_some_tools_for_CSM_V1.1.doc European Railway Agency ● Boulevard Harpignies, 160 ● BP 20392 ● F-59307 Valenciennes Cedex ● France ● Tel. +33 (0)3 27 09 65 00 ● Fax +33 (0)3 27 33 40 65 ● http://www.era.europa.eu
BOX 1 BOX 2 European Railway Agency Collection of examples of risk assessments and of some possible tools supporting the CSM Regulation Preliminary System Definition in CSM's BOX 3 BOX 4 Concept 1 Demonstration of Compliance with the Safety Requirements Performance Monitoring 12 System Definition & Application Conditions 2 CSM's for RISK ASSESSMENT System Acceptance 10 Operation and 11 De-commissioning 14 Maintenance and Disposal Risk Analysis 3 Modification and Retrofit 13 4 System Requirements Safety Requirements Apportionment of 5 System Requirements System Validation (including Safety Acceptance and Commissioning) 9 Re-application of the CSM Design and Implementation 6 Installation 8 Manufacture 7 Figure 5 : Figure 10 of EN 50 126 V-Cycle (CENELEC system life-cycle). Reference : ERA/GUI/02-2008/SAF Version : 1.1 Page 33 of 105 File Name : Collection_of_RA_Ex_and_some_tools_for_CSM_V1.1.doc European Railway Agency ● Boulevard Harpignies, 160 ● BP 20392 ● F-59307 Valenciennes Cedex ● France ● Tel. +33 (0)3 27 09 65 00 ● Fax +33 (0)3 27 33 40 65 ● http://www.era.europa.eu
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Guidance for Use of CSM Recommendation - ERA - Europa

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