What evidence do auditors commonly ask for on PS-05 Protection from fire and smoke?

Fire compartment plan with the certified resistance rating of each barrier; Commissioning certificate for the extinguishing or oxygen reduction installation; Transmission test record confirming alarm receipt by the local fire service; Attendance list and debrief notes from the most recent fire drill.

What is the most common gap auditors find on PS-05?

Cable and pipe penetrations through rated walls left unsealed after works

BSI C5 (121-criteria catalogue) · C5: Physical Security

`PS-05` Protection from fire and smoke

Protect buildings against fire and smoke with fire sections rated at least ninety minutes, early detection with automatic voltage release, an extinguishing or oxygen reduction system, alarm transmission to the local fire brigade, plus recurring fire inspections and drills.

Source: BSI C5 (121-criteria catalogue), PS-05. The statement above is our statement of the clause, read from the published text and cited so you can check it against the official text, not the instrument verbatim. Open BSI C5 (121-criteria catalogue) in the compliance library.

The edition of the catalogue is not stamped here; check the edition your attestation is issued against.

artefacts

held by a system

at each review

hard

to go live

Physical access / facilities

where the evidence lives

teal = a system already holds it · olive = produced at each review. To go live: easy when half or more of the artefacts are already held by a system, moderate from a quarter to a half, hard below a quarter.

These are the artefacts auditors commonly ask for on this requirement, our guidance rather than text from the standard. Your assessor decides what is sufficient in your context, and asks for samples across the period when a report covers one.

system holds itEvidence a system already holds

none for this control

periodic reviewEvidence produced at each review

Commissioning certificate for the extinguishing or oxygen reduction installation · Physical access / facilities
Transmission test record confirming alarm receipt by the local fire service · Physical access / facilities
Attendance list and debrief notes from the most recent fire drill · Physical access / facilities

governing documentDocuments that govern the control

Fire compartment plan with the certified resistance rating of each barrier · Policy repository / GRC workspace

First move

No system holds this evidence for you: it is people and documents. Reminders and routing to the owner still save time. Put the document under version control with an owner and review date, and log each review as a record with reviewer and date.

Common gaps auditors find

Cable and pipe penetrations through rated walls left unsealed after works
Detection zones so coarse that one alert would shut power to an entire hall
Extinguishing agent inspection overdue against the manufacturer interval
Drills run for office staff only and never for data centre operations shifts

Do this for your whole sheet

Paste the rows you run your controls from and get this mapping for every control at once, with the periodic-review ones flagged and a first move per row. No account for the first run.

Build my evidence sheet

PS-04 Physical site access control · PS-06 Protection against interruptions caused by power failures and other such risks