Course Overview:
Delivery Options:
Length: 2-days (16 hrs)
Percent Hands-on: 25-35%
Description:
This course introduces students to the maintenance aspects of IEC 61511 (Safety Instrumented Systems. The primary targets of this course are instrument and automation technicians who maintain, troubleshoot, and repair safety instrumented systems. The course assumes technicians have basic understanding of instrumentation and controls but does reinforce key areas that often lead to problems and mistakes in SIS maintenance. Students will gain familiarity with the overall SIS program to help them understand their role and responsibilities in the program, as well as detailed coverage of maintenance related issues of IEC 61511 including proper proof testing of typical instrumentation devices.
Course Approach:
This course will utilize Rosemount Smart transmitters connected to an analog input with scaled indicator, as well as Fluke process meters / calibrators, and HART Communicators to perform actual typical SIS maintenance tasks and allow students to dig deep into the real world issues, mistakes, and common problems that are encountered in the field.
The primary objective of the course is to ensure that students understand how to perform SIS maintenance properly and in accordance with IEC 61511. This course will cover all of the underlying concepts that even many senior technicians do not fully understand, and which often cause mistakes and problems in the field.
In some situations, coverage of logic solvers and final control elements may be included (for Site Specific training - depending on customer application).
Course topics:
- Process safety (in general)
- Big picture view of IEC 61508 and 61511 programs, including how they are coordinated and how they relate to other process safety related programs
- SIS terminology
- Process of risk ranking and assignment of SIL ratings (from HAZOP's, & LOPA's, and development of Safety Requirement Specs)
- Layers of Protection and LOPA
- Safety Lifecycles
- Demand tracking in SIS
- Probability of Failure on Demand (PFD)
- Impacts of maintenance on PFD
- SIF Device Failure Tracking
- Recognizing Failure types (Safe/Dangerous; Detected/Undetected)
- Typical Proof Testing (in detail)
- Types and approaches to SIS proof testing
- Common problem areas in SIS equipment
- Common errors and mistakes in SIS testing and maintenance
Hands-on Exercises:
- Observe types of instrument failures (to help understand reasons for SIS proof test steps)
- High/Low Fault tests
- Instrument inspections
- Proof testing of typical Smart Instrumentation
- Common instrumentation failures, mistakes, misconfigurations, etc.
Optional Hands-on Exercises (Onsite):
- Proof testing of final control elements, logic solvers, etc. - based on applicable equipment availability.
- Proof testing of logic solvers
- Coverage of site specific SIS program implementations (SRS, HMI details, Testing procedures & forms, etc.)