outcome 4 Flashcards
PPE
Personal protective equipment
meaning of hazard
something has potential to cause harm
chance of harm because of hazard
risk
risk =
hazard + exposure
in hazard of refinery system we have 5 find it
1) crud oil pre treatment
2) crud oil distilation
3) thermal cracking
4) hydrotreating and hydrocracking
5) alkylation
what is the hazard of crud oil pre treatment
1) h2s , Hcl , and salt in desalter is the mine caroosion case in the unit
2) caroosion is a sourese of leake of oil and hydrocarbone
3) low boiling point of Hc lead fire and explosion
what is the hazard of crude oil distilation
1) low boiling point of HC may leake for imprepar connection between ( furnenc , heat exchanger , distilation column)
2) sour distilate at high temp can lead severe coroosion
thermal cracking , what is the hazard of crud oil
1) when procesed sour in deleyd cock proceders must be carried out carefuly to avoid caroosion
2) hyrogen slfide caroosion may in furnenc , coke dram , reactor
3) thermal cracking is a soures of cock formation whish blok line and connection leading to over pressurezation
explain what is the hazard of hydrotreating and hydrocracking
1) catylatic handling and loading must be carried out of care so that fine partical not result explosion
2) high operation temp leads to coke formation so care should be taken to avoid fire and explosion
3) oil coating the spent catylatic should be stripped out in the stripper before sent to the regeneration , if not move the peercene of oil cause explosion during contact with air
what is the hazard of refinery of alkylation
1) we have two system fires one is sulfuric acid and other one is hydrofluoric acid whish are both considered hazardous chemical
2) improper connect acid with water may lead explosion so in this cause use small amount of water to avoid corrossion
3) acid effluent must be neutralized before send to the sewers
