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Privacy

Last updated 22 October 2026

You do not need an account, and the site does not use tracking cookies or analytics. This page lists everything that leaves your browser and everything the site keeps.

Library and building blocks

Searching the reviewed library and assembling a worksheet from building blocks happen in your browser. What you type is not sent to the site for these.

Free AI drafts

• When no library worksheet or building block fits, you can ask for a free AI draft. The text you typed is sent to the site's server function, which passes it to Cloudflare Workers AI (an open model run by Cloudflare) to write the draft.
• The site does not store your text or the draft on its server. The draft is kept only in your own browser (the last 10 drafts), so the same request opens again instantly. Clearing your browser data removes them.
• To keep the service free, the site counts drafts per visitor per day. A visitor is counted by a one-way code made from your IP address and a secret value. Your IP address itself is not stored, and the counts are deleted after two days.
• Cloudflare processes the request under its own privacy policy.

"Flag this row"

A flag stores the worksheet and row you flagged, your comment, your email address if you choose to give one, and the date. Only the reviewing engineers can read flags. The site also shows that the row is "Under re-review" until a reviewer closes the flag.

"Request a reviewed worksheet"

A request stores the system you described, your note and email address if you give them, and the date. Only the reviewing engineers can read requests. Your email is used only to tell you when the worksheet is ready.

Flags and requests are also counted per visitor per day with the same one-way code, deleted after two days.

Outside services your browser contacts

• Google Fonts, for the typefaces.
• cdnjs (Cloudflare) and jsDelivr, for the 3D model, animation and Excel export code.
• Cloudflare, which hosts the site.

Your choices

You can use the library, the building blocks and the exports without sending anything. If you want a flag or request you sent to be deleted, send a request through the site naming it, and it will be removed.

Draft for HAZOP preparation only. Must be reviewed by a qualified HAZOP team.