Sustainable SIS Solution Maintain safety integrity and competency throughout the process plant life cycle Bulletin 32P01A10 01EN
Yokogawa recognizes the continuous challenges for plant owners to operate/maintain process safety integrity throughout the whole life cycle of their plant. Yokogawa has come up with a Sustainable SIS (SSIS) solution. This holistic approach ensures that not only an optimum safety solution is realized, in addition maintainable throughout the lifetime of your plant. Yokogawaʼs SSIS solution allows you to retake ownership of your process safety environment by making it comprehensible, manageable, compliant and secure. SSIS solution provides peace of mind allowing you to focus on your core business. Hazard and Risk Assessment Improve SIL3 Safety Instrumented System ProSafe-RS Safety Performance Monitoring Solution Monitor & Analyze Safety Application Securing Solution SSIS solution allows safety application to be maintained at the required level at ease in accordance with functional safety standards IEC 61508 and IEC 61511 throughout the plant life cycle. This is achieved by providing the following solutions: Clear visualization of your safety applications Implicit compliance by embedded functional safety management Management of the safety application for the life of the process Safety Requirements Import Implement Safety Application Securing Solution Sustainable SIS (SSIS) Solution Analysis Realization or Modification Operation & Maintenance Figure Overview of Sustainable SIS (SSIS) solution in the process plant life cycle Safety Performance Monitoring Solution Current safety standards require the actual safety performance of a process to be verified against the design performance target and assessment of plant safety when SIS is bypassed. This is achieved by providing the following solutions: Embedded dynamic safety performance monitoring Pre-emptive impact assessment of safety overrides 1 Sustainable SIS Solution Sustainable SIS Solution 2
Clear visualization of your safety applications 1 2 3 Considering the potentially huge impact of incidents in the process industries, every person involved with the Safety systems on our site has a responsibility to assure operational integrity. With our many systems, understanding their current functionality and design is complicated. Recently I joined this company as an operator. I want to grasp the process safety related requirements of functional safety standard IEC 61511. However, it is challenging and difficult to interpret the SIS application program and it is worrying whether it can actually be effectively understood. In a realization phase, I do not know whether the safety requirement specifications behave as expected until the test begins. If a big problem is found in the test, it will affect the schedule. I want to confirm it at an early stage, however it is difficult and time consuming to verify the logic on paper. SSIS solution provides a more tangible visualization of your safety applications. SSIS solution represents process safety functions in the form of design documents, cause & effect matrices and state/transition diagrams. It makes the functionality easy to understand by all departments, not just application engineers. Operators, maintenance and process engineers can interactively support design and problem solving! The cause & effect matrix and state/transition diagrams can be dynamically simulated. Designs and modifications can be extensively tested with simulation offline before deployment. Safety Requirements Specifications (SRS) Application expressions by SSIS solution Import design Cause & effect matrix Application simulation by SSIS solution Easy to understand Simulation State/transition diagrams Easy to test 3 Sustainable SIS Solution
CHALLENGE SOLUTION Management of the safety application for the life of the process 5 Implicit compliance by embedded functional safety management 4 I need to install a safety instrumented system, so I want to choose a reliable partner who can not only supply a SIL3 logic solver but also provide certified SIL3 systematic capability as specified in functional safety standards IEC 61508 and IEC 61511. I need to shortlist potential partners based on compliance to these recognized standards. I am thinking about modifying the plant, but the safety system was installed 15 years ago and the person in charge at that time has retired. I do not know what small incremental modifications have been carried out or why. I am concerned about whether the available design documents reflect the current SIS status. SSIS solution can securely maintain the "consistency" of the safety system information. All information for a safety instrumented system is registered in SSIS solution database. It is easy to recover historical activities relating to engineering and changes. The latest design documents can be automatically generated at any time ensuring there is no inconsistency with the application currently being implemented. Modifications can be planned on a design document basis with peace of mind. Design SSIS solution makes it possible that realization in accordance with functional safety standards IEC 61508 and IEC 61511 will be deliverable with global consistency. SSIS solution has embedded management functions for ensuring functional safety management procedures in accordance with functional safety standards IEC 61508 and IEC 61511. These management functions mean that Yokogawa can provide globally consistent safety engineering with homogeneous quality compliant with the recognized best practices. For extensions and modifications, SSIS solution provides high quality managed engineering. The change records and test scripts are captured and maintained in the database for smooth project execution. Furthermore, the potential direct and indirect impact of changes can be analyzed in detail by using the simulator features as recommended in the standards. Organization definition Test / Commissioning Operation Modification Easy to inherit Items stored in the database Design documents Application software Change records Test records and test scripts Engineering organizations and procedures Easy to record Procedure and resource management Easy to comply Easy to document 4 Sustainable SIS Solution Sustainable SIS Solution 5
Embedded dynamic safety performance monitoring 6 I want to improve plant safety and availability throughout safety life cycle. However there are too many past alarm and event records which are not organized for such analysis. SSIS solution provides continuous improvements of plant safety. SSIS solution collects automatically safety statistic to be used for Safety Instrumented Functions (SIFs) improvement. SSIS solution provides evidence of safety performance and SIFs availability records for audit by regulatory authority. The designed safety performance is compared against the actual operational safety function activity, to highlight issues, validate safety design, optimize test scheduling and help users improve safety and availability of the plant. Improve Safety Design Expected performance Safety KPIs Actual performance Gap Analysis Performance Validation Pre-emptive impact assessment of safety overrides 7 I need to override a Safety Instrumented Function (SIF) for maintenance. I want to assess the risk on-the-fly and understand the impacts and how they manifest in other areas of the plant. However plant conditions are continuously changing and the process requires multiple and/or sequenced overrides. SSIS solution facilitates decision making prior to override. SSIS solution helps you assess the impact of overrides before their implementation including effects which may manifest in other equipment. It improves visibility of potential unsafe situations and increases safety compliance by aiding policy enforcement and traceability. Current Plant State Separator Oil Booster Pumps Override Target Main Oil Line What is going to happen? See whether there are sufficient protections by other SIFs before executing. If Override is Applied Separator Separator Sufficient Protection (Only just) Oil Booster Pumps Insufficient Protection Oil Booster Pumps Main Oil Line Main Oil Line Sustainable SIS Solution 6
Get SIStainability! How can I get SIStainability, SSIS solution, in our plant? SSIS solution can be adapted to your plant by installing and engineering ProSafe-RS and following SSIS solution enablers. What if my current SIS is not a Yokogawa solution? Yokogawa can reverse validate existing SIS solutions into SSIS solution environment and regenerate your safety applications functionality on a Yokogawa ProSafe-RS platform. SIL3 Safety Instrumented System + SSIS solution enablers s to be solved idefine for ProSafe-RS 1, 2, 3, 4, 5 Exaquantum Safety Function Monitoring 6 Exaquantum Override Safety Advisor 7 idefine for ProSafe-RS is developed by Trinity Integrated Systems. It can be purchased only from Yokogawa. YOKOGAWA ELECTRIC CORPORATION World Headquarters 9-32, Nakacho 2-chome, Musashino-shi, Tokyo 180-8750, Japan http://www.yokogawa.com/ YOKOGAWA CORPORATION OF AMERICA 12530 West Airport Blvd, Sugar Land, Texas 77478, USA http://www.yokogawa.com/us/ YOKOGAWA EUROPE B.V. Euroweg 2, 3825 HD Amersfoort, The Netherlands http://www.yokogawa.com/eu/ YOKOGAWA ENGINEERING ASIA PTE. LTD. 5 Bedok South Road, Singapore 469270, Singapore http://www.yokogawa.com/sg/ YOKOGAWA CHINA CO., LTD. 3F TowerD Cartelo Crocodile Building, No.568 West Tianshan Road, Shanghai 200335, China http://www.yokogawa.com/cn/ YOKOGAWA MIDDLE EAST & AFRICA B.S.C.(c) P.O. Box 10070, Manama, Building 577, Road 2516, Busaiteen 225, Muharraq, Bahrain http://www.yokogawa.com/bh/ Represented by: http://www.yokogawa.com/iss/ Printed in Japan, 708(KP) [Ed : 01/b] Trademarks Co-innovating tomorrow, Exaquantum, and ProSafe are registered trademarks of Yokogawa Electric Corporation. idefine is a registered trademark of Trinity Integrated Systems. All other company brand or product names in this bulletin are trademarks or registered trademarks of their respective holders. Subject to change without notice. All Rights Reserved. Copyright 2017, Yokogawa Electric Corporation