Safety Instrumented Systems Online Exam
Practice the 14 quiz online exam questions and answers on the safety instrumented systems (SIS) used in the oil and gas industries.
Overview of HIPPS System
HIPPS is an abbreviation of “High Integrity Pressure Protection System”. HIPPS systems are applied to prevent over-pressurisation of a plant by shutting-off the source of the high pressure. In traditional…
Safety Instrumented System Engineer Interview Questions
A SIS is engineered to perform "specific control functions" to failsafe or maintain safe operation of a process when unacceptable or dangerous conditions occur. Safety Instrumented Systems must be independent…
Layers of Protection Analysis (LOPA) Interview Questions
It is a simplified risk assessment method. It provides a method for evaluating the risk of hazard scenarios and comparing it with risk tolerance criteria to decide if existing safeguards…
BJT Amplifiers Interview Questions & Answers
1. Explain what is an amplifier? The device that amplifies the amplitude of the input signal is called the amplifier. An amplifier may be defined as a device that increases…
Electronic Equipment Purging Principles & Standards
What is Purging? Purging/pressurization systems permit the safe operation of electrical/electronic equipment under hazardous conditions when approved hazardous location equipment is not part of the application or the equipment is rated…
Variable Frequency Drive (VFD) Working Principle
History of Variable Frequency Drives (VFD) When Tesla first introduced the 3-phase alternating current (AC) induction motor in 1888, he knew that his invention was more efficient and reliable than…
Thermowell Design Guidelines
When fluid flows past a thermowell inserted into a pipe or duct, vorticies form at both sides of the well. These vorticies detach, first from one side, and then from the other. This…
Coriolis Mass Flow Meter Working Principle
Mass flow meters are the types of flow meters that are mainly employed in mass-related processes such as chemical reactions, heat transfer, etc. In all these processes, accurate measurement of…
Working Principle of Vortex Flow Meter
Vortex flow meters measure the frequency of vortices generated by a bluff body or shedder bar to calculate an equivalent volumetric flow rate.
