SQAS Tank Cleaning assesses a tank cleaning station on more than just cleaning quality. A full inspection program covers six areas: on-site safety inspections, storage of cleaning chemicals and (hazardous) waste, condition monitoring of technical installations and technical inspections, security inspections (including food defense), BBS behavioral observations, and — as the closing piece for food cleanings — validation and verification of cleaning programs. This article shows how to set up, carry out, and follow up on these 6 components together in one inspection program.
An SQAS Tank Cleaning assessment evaluates the entire station, not just whether the compartment leaves the cleaning bay clean. A station that steers only on cleaning speed and quality and leaves the rest to chance runs into the same two symptoms, whichever component is involved:
A well-designed inspection program closes those gaps: it provides evidence for an SQAS Tank Cleaning assessment or customer audit, keeps safety, security, and technical condition demonstrably up to standard, and ensures cleaning quality is a verifiable result rather than an assumption.
An SQAS Tank Cleaning inspection program consists of seven themes, each with its own rhythm, owner, and checklist — but best brought together under one inspection platform with shared action follow-up.
For tank cleaning stations that also carry out heating activities, or that operate a container depot and/or workshop, these themes apply equally.
Whichever regime you report under — SQAS Tank Cleaning, EFTCO FOOD, a customer-specific protocol — the execution logic of these seven components is comparable. What differs are the reporting and scope requirements: which topics you inspect, what evidence a customer or assessor expects. We focus on how you carry out these inspections effectively at a tank cleaning station that cleans tank and bulk trailers, and tank and silo containers, day in day out, in chemicals, food, and feed.
You design a workable program around seven elements — scope, frequency, role division, time investment, training, and action management — plus analysis afterward, applied to each of the seven components.
1. Scope per component, not one checklist for everything. Each of the seven components requires its own checklist with sharp, testable questions, drawn up with the people who know that component best: the technical department for condition monitoring and inspections, the HSE officer for safety and security, the cleaning acceptor for food cleaning verification, the operations manager for BBS. One generic "station walk-through" checklist won't produce a usable result for any of the components.
2. Check on risk, not on calendar. For each component, determine how likely a deviation is and how severe the consequence is if it goes undetected:
3. Role division with independence on the heaviest decision. The cleaner or operator is the first-line checker on the floor, but place the release decision for a food tank, or the condition assessment of a critical installation, with a second person or specialist — not with whoever carried out the work itself. BBS observations must be carried out by the supervisor; technical inspections belong to a competent person or an external inspection body.
4. Time investment. Too many checkpoints at too high a frequency leads to rushed rounds, across all seven components. Don't plan more than can genuinely be assessed — a proper condition assessment or cleaning verification isn't something you do in passing.
5. Training and instruction per component. A checklist for security or technical condition monitoring requires different knowledge than a BBS round. Make sure every inspector knows what they're looking at and why — especially for food defense and food-related cleaning verification, where the risk isn't always visible.
6. One shared action management system. A finding — whether it comes from a technical inspection, a BBS observation, or a cleaning verification — is followed by feedback, assignment, a deadline, and follow-up. Bring all seven components together in one action module: this surfaces patterns that a separate checklist would miss, and an SQAS Tank Cleaning assessor specifically wants to see non-conformities followed up station-wide.
7. Analysis. Improvement requires trend analysis across all components: which installations structurally cause failures, which unsafe behavior keeps recurring, where does chemical or waste storage keep running into the same deviation? Track a handful of hard indicators per component and adjust accordingly.
Pay attention to the following seven steps: preparing, observing, recording evidence, classifying, naming an action, closing out with the person involved, and reporting immediately.
During an SQAS assessment, the following came to light. During a chemical cleaning bay check, "discharge via a closed drain line" was routinely marked "OK," while the pump wasn't working and the line therefore couldn't be used. The cleaners hadn't reported the fault, and the checker had been more focused on ticking boxes than carrying out a genuine check. The fix lay in repair and training: repairing the pump and training the cleaners and the inspector. Cleaners must report defects immediately (this concerned their own direct safety, given exposure to carcinogenic substances). The inspector, because they hadn't sufficiently understood the importance of a critical inspection. Photos of the closed drain line in use were made mandatory.
For food loads, a T01 inspection code on the ECD is not sufficient evidence that the cleaning program itself is sound. Validation and verification of the cleaning program demonstrate that the program is capable of achieving the desired cleaning result, without this having to be proven after every single cleaning with a full test package (ATP, allergen, turbidity, pH, conductivity, millipore, etc.). Prior validation demonstrates that the cleaning program — the procedure, the chosen agents, temperature, time, and mechanical action — is structurally capable of cleaning a compartment food-safe after a given product. Verification tests whether this is actually the case. Both belong in the inspection program, but they are not the same:
This is separate from customer requirements. Some customers require a verification of the cleaning result for every cleaning, but that is not always the case.
An SQAS Tank Cleaning assessor carrying out EFTCO Food assessments wants to see both: prior validation and the verification evidence that the procedure is actually followed in practice and is effective. Include this explicitly as its own scope component within cleaning verification, with its own frequency (validation upon change, verification periodically — for example annually) and its own evidence requirements. For the full approach — which tests when, how to build a validation file, and how to set up the verification sample — see our guide Carrying out validation and verification of food and feed tank cleaning.
A finding only becomes valuable once it is immediately followed by an assigned action with a deadline and verification — regardless of which of the seven components it comes from. An inspection without action management is busywork. This is where many programs go wrong: the finding is logged and only reaches the person who needs to act on it weeks later. By then, the context is gone and the action stays half-hearted. Three rules to prevent this:
Six components: on-site safety inspections, storage of cleaning chemicals and (hazardous) waste, condition monitoring of technical installations and technical inspections, security inspections (including food defense), BBS behavioral observations, and cleaning verification — with validation and verification of the cleaning program as an additional component for food cleanings.
That differs per component and is risk-based. Technical inspections follow the legal or manufacturer's schedule. Condition monitoring is planned based on the wear sensitivity and criticality of the installation. BBS observations and safety inspections are planned on a fixed frequency and at the risk locations. Security inspections at least periodically, with extra attention after changes to access or the site.
A combination of roles: the supervisor for BBS, the technical department for condition monitoring, a competent person or external inspection body for technical inspections, and the HSE or security officer for safety and security inspections including food defense. Bring the results together in one system, even though the people carrying them out differ.
Cleaning verification demonstrates that one specific cleaning succeeded. Validation and verification of the cleaning program demonstrates that the cleaning program itself — for a given product(group)–program combination — is suitable; it confirms that the validated procedure is actually being followed and is effective. For food cleanings, both belong in your program. See the guide Carrying out validation and verification of food and feed tank cleaning.
Certainly. Photo evidence strengthens a finding and shows that your judgment is based on an observation made in the field. Make sure photos are unique per inspection — reusing photos is out of the question. Dated and traceable in a controlled system, they hold up under any check.
Track a handful of indicators per component: (1) the number of re-cleanings and their causes; (2) complaints about residual load or contamination; (3) the share of BBS observations showing risk behavior, and the trend; (4) failures and rejections from condition monitoring and technical inspections; (5) security incidents or deviations in access control; (6) the share of deviations resolved within deadline with verification; (7) the outcomes of customer audits and SQAS Tank Cleaning assessments over time.
Igor Bots — SQAS/ESAD/EFTCO/CDI assessor and DGSA (ADR), ISO Lead Auditor 9001/14001/50001. Extensive experience with assessments and inspections in tank cleaning. LinkedIn
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