Where an Excel nonconformity register breaks
A spreadsheet is a perfectly good way to start a nonconformity register. It is free, everyone can open it and it takes ten minutes to set up. The trouble is not that it is a spreadsheet. The trouble is where it stops being able to do the job, and that moment is rarely visible until an audit makes it so.
Here are the five places it breaks, in the order plants usually meet them.
1. Two people, one file
The first colleague who edits a copy instead of the original creates a second register. Shared workbooks reduce the problem and do not remove it. The cheap fix: one file in one location, one person responsible for it, and a rule that nobody emails it.
2. Nobody can say who changed what
A due date moves from March to June, and nothing shows it. For a document that is meant to be evidence, that is the weakest point. The cheap fix: a change-log sheet, filled in by hand, and a habit of filling it in. It works until it does not.
3. Actions hide inside cells
One nonconformity needs three corrective actions, so they go into one cell separated by line breaks, and "done" gets typed at the end. Now "which actions are overdue?" cannot be answered by a filter. The cheap fix: a second sheet, one row per action, each with a nonconformity number, owner and due date.
4. Overdue items are found, not announced
A spreadsheet will not tell you that something has gone past its due date. Someone has to look. In practice that means the week before the audit. The cheap fix: conditional formatting on the due-date column and a calendar reminder on the first of each week to filter for red rows.
5. The management summary is rebuilt every time
Counts by process, by severity, by status, the number overdue: each review means a new set of pivot tables. The cheap fix: build the pivots once, on a separate sheet that reads from the register, and refresh it before each review.
When the cheap fixes stop being enough
Each fix above adds a habit someone has to keep. Once you are keeping all five, the spreadsheet has become a small application that is maintained by hand. That is the point at which it is worth moving the same columns into something that does these jobs itself: linked actions, a record of every change and a daily list of what is overdue.
You do not have to give up the spreadsheet to find out whether that is true for you. Send the header row of your register and I will show you the same columns as an app, on a 20-minute call, free.