Igbani, Sunday, Orlando Ketebu and Yousuo Digieneni (2019) “APPLICATION OF HAZOP AND BOWTIE-XP METHODOLOGIES OF RISK ASSESSMENT ON THE MACONDO OILWELL BLOWOUT”, International Journal of Advances in Scientific Research and Engineering (IJASRE), ISSN:2454-8006, DOI: 10.31695/IJASRE, 5(6), pp. 01–06. doi: 10.31695/IJASRE.2019.33184.