TY - GEN
T1 - Application of hoop stress limit state and predicted corrosion rate in underground gas transmission pipeline inspection plan
AU - Alfon, Patuan
AU - Soedarsono, Johny Wahyuadi
AU - Priadi, Dedi
AU - Sulistijono,
PY - 2013
Y1 - 2013
N2 - In the transmission pipeline system, decreasing the integrity of the pipe is generally caused by corrosion. Limit state of hoop stress can be applied to determine whether the pipe material is still safe for utilizing below its yield stress. Defining the corrosion rate allowable will be essential in formulating risk of corrosion in the pipeline system. Using an external corrosion rate model generated by soil, the prediction of corrosion rate in every year service life of material will determine the frequency of inspection by adjusting the threshold category. The predicted corrosion rate in every year is as a function of soil resistivity by a factor of coating breakdown and cathodic protection (CP) remaining life. A modified scheme, so called the Inspection-Maintenance-Repair strategy, is an effective method to increase the effectiveness of inspections. The reduction in risk of corrosion is able to extend the inspection plan for several years.
AB - In the transmission pipeline system, decreasing the integrity of the pipe is generally caused by corrosion. Limit state of hoop stress can be applied to determine whether the pipe material is still safe for utilizing below its yield stress. Defining the corrosion rate allowable will be essential in formulating risk of corrosion in the pipeline system. Using an external corrosion rate model generated by soil, the prediction of corrosion rate in every year service life of material will determine the frequency of inspection by adjusting the threshold category. The predicted corrosion rate in every year is as a function of soil resistivity by a factor of coating breakdown and cathodic protection (CP) remaining life. A modified scheme, so called the Inspection-Maintenance-Repair strategy, is an effective method to increase the effectiveness of inspections. The reduction in risk of corrosion is able to extend the inspection plan for several years.
KW - Corrosion rate allowable
KW - Hoop stress limit state
KW - Inspection plan
KW - Risk reduction strategy
KW - Transmission pipeline
UR - http://www.scopus.com/inward/record.url?scp=84880145149&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMM.328.942
DO - 10.4028/www.scientific.net/AMM.328.942
M3 - Conference contribution
AN - SCOPUS:84880145149
SN - 9783037857120
T3 - Applied Mechanics and Materials
SP - 942
EP - 949
BT - Mechanical Science and Engineering III
T2 - 2013 3rd International Conference on Mechanical Science and Engineering, ICMSE 2013
Y2 - 1 March 2013 through 3 March 2013
ER -