Custom Floor-Ready Workshops
Fully customized, hands-on sessions built around your engineering team’s active hardware blueprints and system components.
Digital Courses/Catalog/ Industrial Machinery
A practical workshop for machinery and controls engineers who must prove a Performance Level under ISO 13849. We work through categories, MTTFd, diagnostic coverage and common-cause failure using SISTEMA, on the kind of architectures you actually build.
Map a safety function to the right Category and architecture
Calculate MTTFd, DCavg and evaluate common-cause failure
Drive a PL verification end-to-end in SISTEMA
Document a defensible PL result for audit
A structured path from fundamentals to audit-ready evidence. Expand any module to see its lessons.
5 modules · 15 lessons · Certificate of completion

Ben Twombly
Founder & CEO · Principal Safety Engineer
Ben Twombly is the founder of Critical Systems Analysis and the principal engineer behind every CSA program. He holds an FS Engineer certification from TÜV Rheinland and the Industrial Functional Safety Professional (IFSP) certification.
Before founding CSA in May 2023, Ben spent six years as a Senior Safety Engineer at TÜV Rheinland, preparing clients for safety assessments across a wide range of safety-critical systems. He earned his degree in robotics from the Colorado School of Mines. At CSA he works with robotics companies, autonomous vehicle manufacturers, industrial machinery firms, battery management system developers, and rail transit organizations across the U.S., Canada, and Europe.
Secure seats now, or talk to an instructor about a private cohort for your engineers.