How a Nuclear Reactor Starts Up
A reactor engineer explains the approach to criticality: shutdown margin, estimated critical position, subcritical multiplication, the 1/M plot, startup rate and prompt criticality.
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The Advanced Reactor Materials Problem: TRISO, Graphite, and the Supply Chains That Don’t Exist Yet
The reactor designs are ready. The fuel took twenty years to qualify, no graphite grade is code-qualified yet, and half a dozen other materials have no supply chain. A reactor engineer on why materials — not the reactor — are the real limit on advanced nuclear.
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How to Find and Vet an NQA-1 Certified Supplier
Search “NQA-1 certified supplier” and you get badges and brochures. Here’s where the one public list actually lives, how to verify a supplier’s QA program, and the red flags to catch before you buy — from a reactor engineer.
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NQA-1 vs ISO 9001: What Nuclear Work Demands That ISO 9001 Doesn’t
ISO 9001 and NQA-1 look like the same thing. They aren’t. A reactor engineer breaks down what each standard actually demands, why an ISO 9001 certificate won’t get you nuclear work, and where ISO 19443 fits, updated for the new ISO 9001:2026 edition.
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How to Become NQA-1 Qualified: A Supplier’s Field Guide
There’s no NQA-1 certificate to buy. Getting qualified means building a quality program, generating real records, and passing an audit. A reactor engineer walks through the six steps, who audits you, and what the timeline and cost actually look like.
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Boron Control Rods: What They’re Made Of, How They Work, and the Graphite-Tip Flaw That Doomed Chernobyl
What boron control rods are actually made of, how PWR and BWR designs differ, and why a graphite-tipped rod turned Chernobyl’s emergency shutdown into a power surge — from a working reactor engineer.
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What Is a Nuclear Microreactor? A Reactor Engineer’s Plain Guide
A nuclear microreactor is small enough to build in a factory and ship on a truck. A reactor engineer explains what it is, how it differs from an SMR, and whether the trucks will really roll.
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Commercial Grade Dedication: How an Off-the-Shelf Part Becomes a Nuclear Basic Component
Commercial grade dedication is how an off-the-shelf part earns its place in a nuclear safety system. A reactor engineer breaks down the two-part process, the four acceptance methods, critical characteristics, and where buyers and suppliers get it wrong.
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Nuclear Supply Chain Bottleneck: Why the Forge Isn’t the Real Constraint
Everyone names the forging press as the nuclear supply chain bottleneck. It isn’t. The press tonnage exists across six countries — what’s scarce is qualified capacity: the NQA-1 machining, welding, inspection, and records work that turns a raw forging into a component a regulator will actually accept.
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NQA-1 Explained: The ASME Quality Standard Behind Every Nuclear Component
Most people mix up NQA-1 with 10 CFR 50 Appendix B. Here’s what the ASME nuclear quality-assurance standard actually is, how the two connect, and why it makes a nuclear component cost far more than its industrial twin.
