Industrial Risk Management

Transcription

1 Industrial Risk Management Raúl Manga Valenzuela Risk Analyst Repsol Exploración perú In theory, theory and practice are the same. In practice they are not Albert Einstein 1

2 An intuitive process Setting the context Identify hazards Analyze risks Evaluate risks Prioritize and execute actions Whereare we going? 2

3 Whereare we going? Occupational Safety indicator pyramid Process Safety indicator pyramid Process Safety Management KPI s Management framework of the integrity of the systems and operation processes that manipulate substances dangerous, through the application of good design principles and practices of engineering, operation and maintenance. Definitions: risk Risk is evaluated not identified Effect of uncertainty on objectives (ISO 31000) Is a combination of frequency and consequences (damage) arising from the materialization of a hazard The probability of a certain level of damage within a defined period of time 3

4 Theriskmanagementmodel 353 NO030MG Safety and Environmental Risk Management at Industrial Assets 012 MR MN EP DGU Hazard Management Bow Tie Analysis Guideline Safety Case Process Lifecycleof projects The incorporation of risk management from the visualization of the projects will ensure us a safe operational stage 4

5 How muchrisk is tolerable? Zero risk does not exist It is necessary to set a criterion Past performanceis no guarantee for the future Space flight Explore an unknown country Smoke Scale Volunteer Unknown risk Known risk Nuclear energy Live close to the chemical plant Involuntary Forest fire Flu The tolerability of risk is subjective Tolerable risk criteria: ALARP 5

6 Major Accident Hazards: MAH Bow Tie Analysis withinhm process 6

7 Bow Tie Analysis Types of barriers Hardware based barriers Active SECE Theyrequire an activation Passive SECE Theydo not require an activation SECE: Safety and environmental critical element People based barriers Critical tasks Actions that rely entirely on people Critical processes Primarilydrivenbya procedure/standard/ program/system 7

8 Hardware basedbarriers: SECE Master List REPSOL has developed a set of generic SECEs usually found on typical oil and gas installations (onshore and offshore) classified according their function to manage major accident hazards. Notes Barrier List SHUTDOWN SY STEMS BARRIER ELEMENTS (SD) S D001 SD0 02 SD 003 SD0 04 SD 005 SD0 06 Elimination Emergency Shut Down (ESD) Syste m High Integrt iy Pre ssure Blowdown System Well Isolation Equipment Drilling Well Control Equipment Utility Air Systems Protection System (HIPPS) Notes Prevention HIPPS provide instrumented over pressure protection to pipelines and equipment that do not have sufficient mechanicalprotection for the maximum possible fluid pressure. Utility air systems will only be safety critical if their failure could result in the failure of another piece of safety critical equipment. PS or Spec PS PS PS PS PS PS Pi peli ne i sol ati on val ves Bl ow down valves. Chr is tmas trees. Dr ill ing Blow Out Preventor s (BOP) Detection Sub-sea isolation valves Pneumatic / hydraulic Sub-surface safety valves. BOP hydraulic control systems actuators and local control circuits. Proc es s emer gency shut down valves Control Rate determining elements, e.g., orifice plates, that are essential f or the system to achive required performance. Actuated gas lift isolation valves. Diverters. Typical Equipment Types Pneumatic and hydraulic actuators Local control circuits Mitigation ESD initiators such as pressure, temperature and level switches. ESD logic solvers. Outputs (including cabling) to end elements. Emergency Response & Lifesaving Outputs to c ir cui ts whic h tr ip electrical equipment, e.g., pump motors, process heaters. Injection check valves / strom Kelly cocks and stub-in valves. chokes. Well kill system. Flow and gas detection (including kick detection) for drilling operations. Cement system. Mud circulating system. Hardware basedbarriers: Performance Standards Performance standards set out the expectations of how the SECE is to perform All SECEs require a performance standard Details the performance required of a system, item of equipment in terms of: Functionality Reliability Availability Survival Interaction and dependency on other SECE 8

9 Safety Case Introduction Overview of the safety case, risk and fitness to operate Facilities and operations Description of the facilities and operations People management system and HSE Roles of the people in the process of risk management The Risk Management Process Specific to the Major Accident Hazards Implementation In the project or asset Apendix Bow Ties, SECE list, performance standards, action plans, codes and standards 9

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