Percy Coca is an Electrical Engineer and Risk Manager with PMP® and PMI-RMP® certifications, specializing in high-impact projects across Oil & Gas, mining, infrastructure, and construction. This presentation focuses on quantitative risk analysis and contingency planning to enable data-driven decisions and realistic budgets. It highlights the application of RP 66-11 and RP 118-21, supported by complementary recommended practices for consistent and defensible risk analysis.