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 SIMOPS Scenario Identification



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SIMOPS Risk Assessment - AIDIC

3.2 SIMOPS Scenario Identification 
First step of the SIMOPS workshop is the identification of the SIMOPS scenario, type and schedule of 
activities to be performed simultaneously is the key information to be shared and discussed. 
According to starting date of hydrocarbon introduction in a certain process unit, specialists from construction 
and commissioning pointed out the activities planned to be executed in the same area involved by the 
introduction of hydrocarbons. Example of typical site activities is reported in below Table 1. 
Table 1: Typical site activities 
Construction Activities
Pre-Commissioning Activities 
Commissioning Activities 
Excavation 
Energisation / Motor solo run 
Hydrocarbon-in 
Hydro tests 
Water Flushing 
Run-in 
Insulation 
Air blowing 
Inerting / Purging 
Road construction / asphalting works 
Air blasting 
Leak test 
Cold work (pipe fitting, mechanical works, etc.) Steam blowing 
Hot works (welding, grinding, etc.) 
Leak test 
Scaffolding 
Oil flushing 
Painting 
Chemical cleaning 
Lifting operations 
Alarm testing / Instrument check
Tie-in work / Hot tapping 
Electrical & Instrumentation works 
Vehicle entry 
Confined space entry 
Non destructive testing 
Civil Works 
3.3 SIMOPS Hazard Identification 
Dedicated hazard identification was carried out per each SIMOPS scenarios. Discipline specialists provided 
detailed information regarding the planned activities concurrent with hydrocarbon-in, as: starting date, special 
tools to be used, manpower involved, affected area, duration, etc. 
Thanks to above information, together with structured guidewords approach leaded by SIMOPS facilitator, the 
discussion was stimulated to proper indentify hazards associated to each SIMOPS scenario. Particular 
attention was aimed to the additional hazards coming from the contemporary execution of the two activities. 
The below Table 2 reports a list of hazards considered during the workshop. 
Table 2: SIMOPS hazards 
Transportation 
Toxic handling / Toxic release 
Noise 
Dropped object 
Chemical and catalyst handling 
Electrical 
Crane operations 
Gas leak 
Ignition source 
Heavy lifting 
Working at height 
Explosion 
Severe weather conditions 
Confined spaces 
Communication 
Desert conditions (dust, mud) 
Welding / Grinding 
Access / Escape Route 
Misoperation 
Uncontrolled person entrance 

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