Spectrum Inspection Engineering Inc. is an advanced NDE inspection and material fitness-for-service engineering consulting company founded by Danny Wang, PE. in 2001, and based in Los Angeles, California. Spectrum specializes in hydrocracker and hydrotreater unit inspection with experience in engineering evaluation for oil refineries around the world. Advanced NDE includes Phased Array, AUT (automatic UT) systems with TOFD for weld inspection, corrosion mapping, hydrogen induced cracking (HIC, SOHIC and stepwise cracking inspection), high temperature hydrogen attack HTHA with AUBT & Lavender inspection, PEC-CUI Inspection and LRUT Pipeline Inspeciton
