This is a ready-to-use routine monitoring log for a validated depyrogenation cycle. It keeps the equipment in its validated state between qualifications by recording the parameters an inspector expects to see controlled every run. Replace every <<FILL: ...>> placeholder, set your validated limits, and route it through your batch record system. A filled specimen follows. This is educational reference content, not regulatory advice.
Purpose
Validation establishes the cycle; this log demonstrates it stayed in the validated state, batch after batch. It records the critical parameters, the alarms, and the load so that any drift is visible before a requalification fails. It complements, not replaces, the continuous electronic record from the equipment.
Validated limits (set once, from the PQ)
| Parameter | Validated limit | Alarm / action limit |
|---|---|---|
| Hot zone temperature (tunnel) / chamber temperature (oven) | <<FILL: e.g. not below 310 C>> | <<FILL>> |
| Belt speed (tunnel) / hold time (oven) | <<FILL: e.g. not above 150 mm/min>> | <<FILL>> |
| Pressure cascade infeed / hot / cooling (tunnel) | <<FILL: differentials>> | <<FILL>> |
| Maximum load / validated load pattern | <<FILL>> | n/a |
Field definitions
| Field | Format | Required | Who | When |
|---|---|---|---|---|
| Date / batch ID | date / text | Yes | Operator | At run |
| Component and load pattern | text | Yes | Operator | At run |
| Hot zone / chamber temperature | numeric, C | Yes | Operator | During run |
| Belt speed / hold time | numeric | Yes | Operator | During run |
| Pressure cascade (tunnel) | numeric differentials | Yes | Operator | During run |
| Within validated limits | Yes/No | Yes | Operator | At run |
| Alarms / excursions | text | Yes | Operator | At run |
| Deviation reference | text | If excursion | Operator/QA | At run |
| Operator (initials/date) | signature | Yes | Operator | At run |
| Reviewer (initials/date) | signature | Yes | Supervisor/QA | At review |
Log
| Date / batch | Component / load | Hot zone temp (C) | Belt speed / hold | Pressure cascade | Within limits | Alarms / excursions | Deviation ref | Operator | Reviewer |
|---|---|---|---|---|---|---|---|---|---|
<<FILL>> | <<FILL>> | <<FILL>> | <<FILL>> | <<FILL>> | Yes/No | <<FILL>> | <<FILL>> | <<FILL>> | <<FILL>> |
Retention
Retain with the batch record for not less than <<FILL: retention period>> per the records retention schedule. The continuous electronic record from the equipment is the primary data; this log is the contemporaneous human review of it.
Filled specimen
Example rows for tunnel DPT-02 (validated: hot zone not below 310 C, belt speed not above 150 mm/min).
| Date / batch | Component / load | Hot zone temp (C) | Belt speed | Pressure cascade | Within limits | Alarms / excursions | Deviation ref | Operator | Reviewer |
|---|---|---|---|---|---|---|---|---|---|
| 30 Jun 2026 / B-2606-11 | 2R vials, full belt | 321 | 140 mm/min | Cascade normal | Yes | None | N/A | J.L. 30-Jun | S.R. 30-Jun |
| 01 Jul 2026 / B-2607-03 | 2R vials, full belt | 319 | 145 mm/min | Cascade normal | Yes | None | N/A | J.L. 01-Jul | S.R. 01-Jul |
| 01 Jul 2026 / B-2607-04 | 2R vials, full belt | 304 briefly | 145 mm/min | Cascade normal | No | Hot zone low alarm, product held and re-run | DEV-2026-0161 | J.L. 01-Jul | S.R. 01-Jul |
The third row is the point of the log: an excursion below the validated hot zone temperature was caught, the affected product held, a deviation opened, and the reviewer confirmed the disposition. A log with only “within limits, none” rows and no evidence of what happens on an excursion is the finding an inspector looks for.
Common inspection findings this log prevents
- Routine cycles run with no contemporaneous record that critical parameters stayed in the validated band.
- Load patterns run in production that differ from the validated worst case, unnoticed.
- Excursions with no held product, no deviation, and no reviewer challenge.
- A monitoring record signed by the operator only, never reviewed by a second person.
How to adapt this log
- Enter your validated limits from the PQ report at the top; they define pass/fail for every row.
- Match the parameter columns to your equipment (tunnel pressure cascade or oven hold time).
- Point the deviation column to your real deviation procedure.
- Set retention to your records schedule.