Safety Integrated Level (SIL) Verification

Trainer : Mohammadreza Behrouzi
Website: eiepd.com
Requirement:
1.Knowing basics of Process Safety
2.Having worked in process plants
3.Having a desire
By watching the video you will learn:
1. Risk Reduction
In this part you become familiar risk reduction methods and how SIL can contribute to plant safety.
Overview
A Risk is the amount of harm that can be expected to occur during a given time period due to specific harm event. There is no such thing as zero risk. Therefore the concept of defining and accepting a tolerable risk for any particular activity prevails.
SIS achieves risk reduction by reducing the frequency/severity of the hazardous event. The amount of risk reduction achieved is indicated by the risk reduction factor (RRF):
RRF = probability of risk in state 1 / probability of risk in state 2
Layers of Protection
1. Basic Process Control System (BPCS).
2. Automated shutdown sequences in the process control system combined with operator intervention to shut down the process.
3. Safety Instrumented System (SIS). It is a safety system independent of the process control system. It has separate sensors, valves and logic system. No process control is performed in this system; its only role is safety.
4. Active protection layer such as valves or rupture disks designed to provide a relief point that prevents a rupture, large spill or other uncontrolled release that can cause an explosion or fire.
5. Passive protection layer like a dike or other passive barrier that serves to contain a fire or channel the energy of an explosion in a direction that minimizes the spread of damage.
6. Emergency Response Plan (ERP).
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2. Safety Instrumented System
In this minute you get to know safety instumented system and its different components
Overview
The action of a Safety Instrumented System (SIS) is called a Safety Instrumented Function (SIF). More than one SIF may be assigned to a single SIS.
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3.Stages of SIL Study
1.Target SIL Evaluation
What SIL should be allocated for the SIF?
2.SIL Verification
Does SIS fulfill Target SIL requirements?
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4.SIL Verification Procedure
In order to verify the selected SIL in a loop, 3 components should be taken into account.
A. SIL capability stated in the certificate
B. Calculate PFD for each and then sum them and find the corresponding SIL
C. Check architectural constrains by checking first rout.

[@anandanramachandran7415]

Thank you Mr. Behroozi excellent work for Inst Engg

[@naileshmaheta8622]

Tremendous work team EIEPD Well done Keep Educating a preciou content

[@user-sm2sr6jf4h]

good job mr. behroozi

[@kadimabdulsamad7938]

Thanks a lot!

[@harisenafebriadi]

very good training,,,,

[@eiepd]

Thanks 👍

[@abdessamedghettas7167]

Thank you

[@eiepd]

You're welcome

[@demeteo]

When I checked exida’s channel video I saw that Route2h table is different than yours since if HFT=0 then SIL shall be 1 as per your video but if HFT=0 then SIL shall be 2 as per exida’s video. Do you think that which is true? (1:30:42)

[@hoomanbarangizi1158]

Hi, Thanks for good presentation, how can we have relevant PDF file?