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3.5 SIMOPS Worksheet and SIMOPS Layout 
Discussion and results carried out during SIMOPS assessment workshop, as per steps described above, were 
recorded in dedicated SIMOPS worksheet reported in below Figure 3.
SIMOPS IDENTIFICATION 
Id. 
No. 
Main 
Operation 
Description 
Planned 
Date 
Main Operation
Hazard 
----------------- 
Consequence 
Involved Area 
Concurrent 
Operations 
Concurrent Operations
Hazard 
--------------- 
Consequence 
5. Hydrocarbon Introduction in PP Refrigeration and PP Common Units 

 [continuation 
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5.6 
Hydrocarbon 
Introduction in 
PE4 Unit-41 
05-Oct-14 
Hazard: HC Release 
----------- 
Consequence: Fire / 
Explosion Scenario 
Hazard: Low 
temperature due to 
Propylene expansion 
----------- 
Consequence: Frost 
bite 
Main Piperack EL. 8.2m 
----- 
PP Purification Area 
----- 
PP Refrigeration Area 
COMM - Leak 
Test 
1) Hazard: Hand tools. 
Consequence: personnel injury, 
mechanical damage. 
2) Hazard: Drop of material from height. 
Consequence: personnel injury, 
mechanical damage. 
3) Hazard: Unchecked personnel 
access. 
Consequence: Misoperation, operator 
not ready in case of emergency. 
4) Hazard: Overpressure. 
Consequence: Operator injury / 
Mechanical Damage. 
5) Hazard: Release of Nitrogen 
Consequence: Operator asphyxiation. 
SIMOPS RISK ASSESSMENT 
Initial Risk