FBG	fiber Bragg grating
NACE	National Association of Corrosion Engineers
PIGs	Pipeline inspection gauges
MFL	Magnetic flux leakage
PCF	Photonic crystal fibers
UT	Ultrasonic technology
CCTV	Closed-circuit television
FOCS	Fiber optic corrosion sensor
FOTS	Fiber optic temperature sensor
DOAJ	Directory of open access journals
EMI	Electromagnetic interference
UAE	United Arab Emirates
OFDR	Optical frequency domain reflectometry
FE	Finite element
ABS	Acrylonitrile butadiene styrene
OBR	Optical backscatter reflectometer
EDM	Electrical discharge machining