Safety Instrumented System (SIS)

Reliability of a Control System
  • Safety Instrumented System (SIS)

Reliability of a Control System

Reliability (R) is the probability a component or system will perform as designed. Like all probability figures, reliability ranges in…

5 years ago
  • Safety Instrumented System (SIS)

Bathtub Curve

Failure rate tends to be constant during a component’s useful lifespan where the major cause of failure is random events…

5 years ago
  • Safety Instrumented System (SIS)

Control Valve Failure Rate Calculation

Suppose a control valve manufacturer produces a large number of valves, which are then sold to customers and used in…

5 years ago
  • Safety Instrumented System (SIS)

Transistor Failure Rate Calculation

Suppose a semiconductor manufacturer creates a microprocessor “chip” containing 2500000 transistors, each of which is virtually identical to the next…

5 years ago
  • Safety Instrumented System (SIS)

Failure rate and MTBF of Safety Instrumented Systems

In reliability engineering, it is important to be able to quantity the reliability (or conversely, the probability of failure) for…

5 years ago
  • Safety Instrumented System (SIS)

Applying Probability Laws to a Safety Instrumented System

The relatively simple concepts of AND and OR Boolean functions become surprisingly complicated when applying them to real-life measures of…

5 years ago
  • Safety Instrumented System (SIS)

Safety Instrumented System Probability

While the term “probability” may evoke images of imprecision, probability is in fact an exact mathematical concept: the ratio a…

5 years ago
  • Safety Instrumented System (SIS)

Process Safety and Instrumentation

Here we discuss about instrumentation related to industrial process safety. Instrumentation safety may be broadly divided into two categories: how…

5 years ago
  • Safety Instrumented System (SIS)

SIS Example : Nuclear Reactor Controls

Nuclear fission is a process by which the nuclei of specific types of atoms (most notably uranium-235 and plutonium-239) undergo…

5 years ago
  • Safety Instrumented System (SIS)

SIS – Safety Instrumented System Example

A Safety instrumented system (SIS) consists of an engineered set of hardware and software controls which are especially used on…

5 years ago