Safety Shutdown Systems

SIS

• Introduction to SIS
• Design life cycle
• Process control vs safety control
• Protection layers
• Safety integrity levels

Participants will learn how the SIS provides protection, as a whole, to the plant in the event of an uncontrollable situation.  Hindsight, as well as foresight, must be employed in the design of the SIS system. The process control system must be separate from the SIS.  On the first day, attendees will learn about the SIS and how it is divided into various levels to ensure the safe operation of the plant.

SIS, TPS, ESD, PSD, and USD

• Introduction to TPS, ESD, PSD, and USD
• Permissives and interlocks
• High reliability logic solver

On day two, discussions of the SIS will continue and expand to topics of evaluating risk, initial system evaluation, functional testing, managing changesm, and determining system reliability.  Participants will be made aware of the important step in designing the SIS system, which is to establish the risks involved in operating the plant. Procedures must be in place to continually evaluate, manage changes, and assess the reliability of the SIS. Participants will be exposed to how SIS can be divided into the TPS, ESD, PSD, and USD systems, as well as how these systems rely on the appropriate hardware and software to maintain reliably.

TPS, ESD, PSD, and USD

• Failure modes
• Alarms
• Redundancy (TMR)
• Resetting testing and bypassing
• Documentation and cause and effect drawings

On day three, the participants will become familiar with the characteristics of typical TPS, ESD, PSD, and USD systems.  Standards in alarm systems will be covered and the use of redundancy will be demonstrated to ensure shutdown system reliability.  The importance of resetting, testing, and bypassing procedures will be identified. The use of cause and effect drawings will be demonstrated to show participants how the shutdown systems will operate in a facility specific application.