Advantages & Disadvantages of Material

POSTED BY : oilandgasclub March 13, 2017 in Blog Leave a comment

Advantages and Disadvantages of Materials

Material	Advantages	Disadvantages	Limitations
Carbon Steel Lowest Capex	Cheapest option Opex Involves inspection pigging Internal corrosion control through inhibition	Corrosion rates are high Possibility of intelligent or coating Additional Opex through inhibition	High corrosion (pigging) and external painting
Carbon Steel with FBE	Capex slightly more Low Opex Internal corrosion protection through lining	Susceptible for corrosion if FBE coating is damaged Coating gets damaged if fluid contains suspended solids	Coating holidays
Carbon Steel with PE lining	Capex is slightly more than CS + FEB Internal corrosion protection through lining	Not advisable for gas lines lining collapse due to depressurization Operating Temperature limited to 65 Deg max	Operating temp 65 Deg max
Stainless Steel	No corrosion Opex is low	External corrosion protection through coating Not suitable for fluid where chloride are present	Chlorides in fluid
Duplex Stainless Steel	No corrosion Opex is low High Capex	Susceptible to stress cracking in the operating range of 80 to 120 Deg C Long lead time for procurement	Operating temp
GRE	No operating Expenses No corrosion Medium Capex	Limitation due to temperature pressure Inspection limitation Line to be buried only No pigging possible	Temp & Pressure
CS + CRA internal clad	No corrosion Can tolerate highly wet sour conditions	High Capex materials Sourcing problems	Welding

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