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FSSC 22000 guide

FSSC 22000 unannounced audit: how to be ready on any day of the year

Once certified, your site will receive at least one FSSC 22000 surveillance audit with no warning in every three-year period. This guide explains the rule, blackout days, the first hour on the floor and the habits that keep a site ready every day.

  • Updated September 2026
  • 8-minute read
  • Part of the FSSC 22000 hub

Key points

  • Once a site is certified, at least one surveillance audit in every three-year period is carried out without notice. The initial Stage 1 and Stage 2 audits are always announced.
  • The auditor begins with an inspection of production areas and premises within one hour of arriving, so the floor is judged as it runs, before anyone can tidy it.
  • Blackout days are agreed with the certification body in advance; outside them, refusing the visit leads to suspension within three working days and, if the audit still has not happened within six months, withdrawal.
  • Readiness is a set of habits, not a clean-up: an arrival protocol with deputies, records written when the check is made, and routine PRP inspections that already look for what an auditor would find.

What does the FSSC 22000 unannounced audit rule require?

The scheme requires every certified organisation to receive at least one surveillance audit without notice after initial certification, and at least one more in each three-year period that follows. Your certification body chooses the date, does not tell you in advance and keeps the audit plan to itself until the opening meeting.

Some points of the rule are often misread:

  • Initial certification cannot be unannounced. Stage 1 and Stage 2 are scheduled with you; the surprise visit belongs to the surveillance years that follow the certificate.
  • An unannounced visit is not a lighter check. Every FSSC 22000 surveillance is a full system audit covering all of the scheme requirements: ISO 22000, the ISO 22002 prerequisite programmes for your category and the additional requirements.
  • A site may choose to take every surveillance and recertification audit unannounced.
  • The upgrade audit to Version 7 can itself be the unannounced one where the three-yearly requirement calls for it. The Version 7 guide covers the upgrade timetable.

Blackout days and the arrival protocol

Blackout days are dates you agree with the certification body beforehand on which a surprise visit will not take place. Sensible candidates are dates when the site will not be producing, such as a planned shutdown or a closure for works; your certification body confirms which reasons and how many days it accepts. Agree them in writing and keep the list short. Outside those dates, the auditor can arrive on any working day.

What happens in the first ten minutes is decided long before the auditor reaches the gate. A written arrival protocol settles it:

  • Reception: security or reception staff know the certification body's name, check the auditor's identity and call one named contact, not whoever happens to pass.
  • Host and deputies: the food safety team leader hosts, with two named deputies for leave, night shifts and weekends. An absent team leader is not a reason to turn the visit away.
  • Entry to production: hygiene rules, protective clothing and visitor health screening for the auditor are the same as for any visitor, and they are ready at the door.
  • Documents: the deputy knows how to open every register in the system, including those of absent colleagues.

Test the protocol: a guard who does not know what an FSSC 22000 auditor is, or a supervisor who asks the auditor to wait until the manager returns, turns an ordinary visit into a finding before the audit has started.

The first hour on the production floor

Within one hour of arrival the auditor starts with an inspection of production facilities and premises. This inspection is where an unannounced audit differs most from an announced one, because what the auditor sees is the site's normal state, not its prepared one.

The table lists what that first walk commonly shows and the record behind it.

Area on the floorWhat may be visible on arrivalThe record that proves it is normal
Personnel hygiene and entryHand-wash compliance, protective clothing, jewellery and personal items at the changing areaHygiene inspection results and training records for the shift on duty
Cleaning and sanitationResidues on equipment, cleaning chemicals stored in production, tools in poor conditionCleaning schedule signed on completion, verification swabs or visual checks
Allergen controlA change-over in progress, segregated storage, labelled utensilsChange-over checks, the allergen risk assessment and clearance records
Pest controlBait station positions, gaps under doors, droppings in storage cornersContractor visit reports, trend analysis and actions raised
Monitoring pointsOperators recording at a CCP or OPRP, instrument condition, calibration statusMonitoring sheets completed at the time of the check, calibration records
Environmental monitoring (where it applies)Swab points in the zone plan, drains, condensationResults trended over time, with corrective actions for positives

An empty column on the right is the most common weakness. The floor looks acceptable, but the monitoring sheet was completed at the end of the shift, or the last pest report has no follow-up, and the auditor then looks for the same pattern all day.

Records that must be readable on any day

An unannounced visit removes the week of filing and signing that precedes an announced audit, so records must be complete every day. Four habits make the difference.

Write it when you check it

Monitoring, cleaning and change-over records are made at the moment of the activity, by the person doing it.

Let the PRP inspections do the auditor's job first

The scheme's additional requirement on PRP verification expects routine site inspections, monthly for example. Run them without warning, on different shifts, using the same eye an auditor would bring, and close the actions they raise.

Keep the assessments current

The food defence, food fraud and allergen assessments, the environmental monitoring plan and the culture plan must show a recent review date and actions under way. The additional requirements guide and the food defence and food fraud guide explain what each one contains.

Make the system open to more than one person

If only the quality manager knows where the evidence sits, the audit depends on one diary. Holding each register in Effivity, with owners, dates and attachments, lets a deputy show the auditor the current state in minutes, on any day.

A worked example: an ordinary Tuesday

The following is an illustration, not a client account. A snack manufacturer in the ambient stable products category runs two shifts. Its certification body arrives unannounced at 07:40 on a Tuesday in the second surveillance year, a day that is not on the agreed blackout list.

Security checks the auditor's identity and calls the food safety team leader, who is on leave. The first deputy, the production supervisor, takes over the visit, as the arrival protocol says.

On the walk the auditor watches a change-over from a nut-containing product to a nut-free one. The operator follows the change-over checklist, the line is cleared of the previous run's packaging and labels, and the clearance is signed before the new run starts. At a metal detector, the operator records a test while the auditor watches; the sheet shows each test at the time it was made, not a column of identical entries.

At a drain near the fryer, the auditor asks about a recent positive environmental monitoring result. The deputy opens the register, shows the investigation, the extra cleaning, the follow-up swabs and the trend over the last six months.

The audit ends with one minor finding, about a pest-control recommendation not yet closed. Nothing on the site was changed for the auditor, which is exactly what the scheme intends.

Mistakes that appear only when nobody is expected

  • Treating refusal as an option. A visit refused outside the blackout days suspends the certificate within three working days, and buyers who follow the public register see the change.
  • A single point of failure. The site can receive the auditor only when one person is present.
  • Cleaning for the auditor. Staff sent ahead to tidy the line are noticed, and it tells the auditor that the normal state is not the audited one.
  • Records filled in at the end of the shift. Real-time monitoring is a basic expectation, and the first hour is designed to test it.
  • Serious events not reported. The scheme requires the certification body to be told of serious events affecting food safety, legality or certification integrity within three working days of their start; an auditor who learns of an unreported recall or incident on the day raises it.

How Sterling prepares sites for the unannounced audit

Ready on the day you did not choose

Sterling's expert and experienced consultants write the arrival protocol with you, train reception, supervisors and deputies, and set up the registers in Effivity, used in 50+ countries, so anyone on duty can show the evidence. Under Sustain™ we run unannounced-audit readiness reviews on different shifts and close what they find before an auditor does. Sterling does not certify; your licensed certification body audits and decides. We ensure successful certification for our clients.

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FSSC 22000 unannounced audit: questions buyers ask

How often is an FSSC 22000 audit unannounced?

At least once in every three-year period after initial certification. A certified site may also choose to have all its surveillance and recertification audits unannounced.

Is the unannounced audit shorter than an announced surveillance audit?

No. Every FSSC 22000 surveillance audit is a full system audit covering all the scheme requirements, and the scheme does not allow reductions below the calculated audit time. Ask your certification body how it has calculated the duration of your visit.

Can our first certification audit be unannounced?

No. Stage 1 and Stage 2 of the initial certification are always scheduled with the organisation. The unannounced audit applies once you hold the certificate.

Do we see the audit plan before the auditor arrives?

No. The scheme does not allow the site to be told the date in advance, and the certification body shares the audit plan only at the opening meeting.

How do we practise for an unannounced audit?

Run internal audits and PRP inspections without warning, on different shifts and days, and treat a surprise mock visit exactly as the real one would be treated. Sterling's readiness reviews under Sustain™ are built on this approach.

FSSC 22000 implementation

FSSC 22000 requirements

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