Ex-Industrial Worker Applies Refinery Safety Logic to CI Pipeline Design

A developer returning to software after 22 years in industrial maintenance has drawn parallels between a refinery safety technique and CI pipeline design. The 'double block-and-bleed' method, which uses two independent valves to prevent single points of failure, inspired him to rethink how code is validated before deployment. He argues that relying on a single tool like Lighthouse creates blind spots, since performance, accessibility, metadata, and HTML validity each require separate checks. His approach now layers multiple validation steps — including linting, type checking, accessibility audits, and HTML validation — across the pipeline. The core principle he applies is that safety and reliability come not from perfect components, but from independent, overlapping layers of protection.