Why they stop where they stop
Every one of these refuses to answer exactly one question, and the refusal is the design rather than a limitation we are apologising for.
The refused question is always the same shape: it is the one whose answer is a professional judgement recorded by someone who carries responsibility for it. Scope under CIP-014 is an engineering determination by the transmission owner. A separation distance under NFPA 855 is a determination by a fire protection engineer and an authority having jurisdiction, on the evidence in front of them. A tool that returned either from a few dropdowns would be producing a number with nobody behind it — and a number with nobody behind it is worth less than nothing in an audit or a plan review, because it invites a decision and then cannot defend one.
What is left after that subtraction is still substantial: arithmetic that is tedious and easy to get wrong, document checks that are well defined and routinely skipped, and deadlines that are already fixed by a standard whether or not anybody has worked them out. Those we will do, in full, with nothing held back behind a form.
Each instrument also states, on its own face, the one thing we are structurally disqualified from doing for you. CIP-014 R2 and R6 require an unaffiliated third party, and we are not one. Under NFPA 855 we can be neither the approved testing laboratory nor the registered design professional who interprets the data, because both have to sit outside the supply of the thing being justified. We would rather you read that here than discover it later.
Who is behind this. Preservation 2 is affiliated with Amidon (360 Ballistics, LLC), which manufactures protective construction materials and therefore sells into some of the decisions these instruments touch. Nothing here is compliance advice, a legal opinion or an engineering judgement, and every instrument names the standard it works from so you can check it against the source rather than against us.
Draft v0.01. The two instruments were last reviewed against their standards on 13 September 2026; each page carries its own review date and version watch. Found an error, a stale section number, or a case the logic gets wrong? Tell us — corrections are more useful to us than leads, and they are the fastest way to make these worth using.