CONPDS CHECKER

Photo Documentation for ISO Tank Container Inspections and Cleaning

Q: What is an ISO tank container evidence system?

An ISO tank container evidence system captures photographic evidence of tank inspection, cleaning verification, and repair, links each image to a validated tank number, and stores records in a centralised, searchable archive. It is a photo evidence layer that can be attached to cleaning certificates, last cargo declarations, and CSC periodic inspection records — it does not generate those certificates, replace specialist ERP platforms, or claim ACC or CSC compliance.

Tank container depots and cleaning stations face documentation needs that dry container workflows do not cover. Every inspection, cleaning cycle, and repair can become a structured, timestamped photo record — linked to the tank number and ready to attach to cleaning certificates, CSC records, and ACC-related audit requests (ITCO Acceptable Container Condition). ConPDS supplies the photo evidence layer only — it does not generate certificates or claim ACC or CSC compliance.

Trusted by container depots, cleaning stations, and leasing companies across Europe — from single-site operators to multi-depot tank networks documenting thousands of inspection events monthly.

No credit card required · Operational within days of onboarding · Privacy-by-design

What Is ISO Tank Container Evidence System?

An ISO tank container evidence system is a structured digital workflow that captures photographic evidence of tank inspection, cleaning verification, and repair, links each image to a validated tank number, and stores records in a centralised, searchable archive. It is a photo evidence layer that can be attached to cleaning certificates, last cargo declarations, gas-free certificates, and CSC periodic inspection records — replacing informal capture methods such as WhatsApp threads, email attachments, and shared folders. It does not generate those certificates.

ConPDS delivers this as a purpose-built photo evidence platform for tank container operations. Field staff capture exterior, valve, manhole, and post-cleaning photos via the ConPDS Checker mobile app. On-device OCR reads the tank number at capture — validated against the ISO 6346 container identification standard (owner code, serial number, and check digit), with wrong recognition flagged for retake or manual entry — and links every image to the correct record. The complete photo set, with timestamps and device-recorded GPS when available, is available in the web dashboard for attachment to certificates issued elsewhere, repair claim support, or guest portal sharing. ConPDS does not generate cleaning, last-cargo, gas-free, or CSC certificates; it does not claim ACC or CSC compliance; and it is not a tank management ERP. For the wider platform category, see the foundational guide to container operational evidence.

Structured tank evidence platforms capture:

Full visual inspection — shell, frame, valves, manhole area, bottom outlet, data plate, CSC plate

Post-cleaning photo evidence that can be attached to a cleaning certificate issued elsewhere, matched to the validated tank number via on-device OCR

Repair documentation — pre and post photos for valve replacement, structural repairs, and component work

Timestamp and device-recorded GPS when available, preserved from the moment of capture — not at upload

Records distributable to shipping lines, leasing companies, and authorised external parties via guest portal, email, FTP, or API

Why Manual ISO Tank Container Photo Documentation Creates Operational Risk

A cleaning certificate without supporting photo evidence is harder to defend in a quality dispute. A CSC periodic inspection file without photographs of the inspection points is harder to reconstruct later. Without a structured ISO tank evidence layer, tank depots and cleaning stations face documentation gaps that surface when a shipping line disputes cleaning quality, a leasing company queries repair work, or an ACC-related (ITCO Acceptable Container Condition) audit request arrives.

Operational metric: A tank depot processing 40 ISO tank containers per day generates over 600 photos across inspection, cleaning, and repair workflows. Without automatic tank number linking, photo retrieval during disputes becomes unworkable — folder sorting and filename guessing break at this scale, and an unlinked photo has no evidentiary value.

Documentation Failures

Valve, manhole, and post-cleaning photos scattered across personal devices, chat threads, and shared folders

Tank numbers manually typed into filenames — transposition errors make historical records permanently unfindable

Photos transferred via WhatsApp lose timestamp and GPS metadata at the moment of transfer

No structured link between photo and specific tank number — matching to the cleaning certificate depends on memory

Operational Consequences

Shipping lines dispute cleaning quality with no retrievable post-cleaning photo evidence to counter the claim

Pre-existing valve or gasket damage misattributed to the depot when no pre-service record exists

Staff departure makes entire tank inspection histories inaccessible overnight

ACC or CSC audit requests cannot be answered with timestamped photographic records linked to the tank number

Without Structured ISO Tank Documentation

A shipping line raises a cleaning quality dispute four weeks after a tank returned to service. The depot cannot locate the post-cleaning interior photos or confirm which technician performed the work — the claim is upheld and the depot absorbs the cost.

With Structured ISO Tank Documentation

The complete pre- and post-cleaning photo set — timestamped, GPS-tagged when available, and linked to the tank number — is retrieved in seconds and can be shared with the shipping line through the ConPDS guest portal alongside a cleaning certificate issued elsewhere. Review proceeds on documented photos rather than memory alone.

How the ISO Tank Evidence Workflow Works in Practice

Four recommended steps replace informal capture with a container-linked, auditable tank photo record — covering pre-service inspection, defect documentation, post-cleaning or post-repair verification, and optional rule-based distribution to authorised parties.

Pre-Service Capture

OCR links photos to tank number

Inspection & Defect Documentation

Valves, manhole, CSC plate recorded

Post-Cleaning / Post-Repair Capture

Cleaning and repair verified, linked

Certificate Attachment & Distribution

Share via portal, email, or API

STEP 01

Photograph Pre-Service Tank Condition

On tank arrival, field staff photograph exterior shell, frame, valves, manhole cover, bottom outlet, and data plate using the ConPDS Checker app. On-device OCR reads the tank number at capture with ISO 6346 check-digit verification — wrong recognition is flagged for retake or manual entry — and links images to the correct record. Timestamp and device-recorded GPS when available are preserved at this point.

STEP 02

Document Each Inspection Point and Any Defects

Photograph recommended inspection points from an editorial checklist — valve condition, gasket integrity, pressure relief device markings, CSC plate legibility. Any defect or component requiring repair is recorded and added to the same tank record. Checker does not enforce this sequence.

STEP 03

Capture Post-Cleaning and Post-Repair Evidence

After cleaning or repair is complete, a full new photo set — exterior, interior, valves, and manhole area — is captured and linked automatically to the same tank record. The before and after set is now stored centrally in the ConPDS dashboard, searchable by tank number from any device.

STEP 04

Attach to Certificates and Distribute by Configured Rules

The complete photo set can be downloaded and attached to a cleaning certificate or repair claim issued elsewhere, shared through the ConPDS guest portal, or sent via email, FTP, SFTP, or API when distribution rules are configured — immediately or after a delay. Every attempt is logged with success or failure.

Container Inspection Workflows Specific to ISO Tank Operations

Tank container inspection differs from dry container gate-in documentation in one critical respect: the inspection points are specific to the tank structure. The following detail is an editorial checklist of what teams often capture — not an enforced Checker sequence.

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Full Exterior Visual Inspection

All sides of the tank shell, frame, and structural components photographed — recording existing dents, corrosion, paint condition, and frame damage. Establishes a photographic baseline of the tank's structural condition before any service activity begins.

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Valves and Fittings Documentation

Top and bottom valves, air inlet, foot valve, and associated fittings photographed individually — recording condition, visible leaks, identification markings, and any damage. Each valve image is filed under the tank's container record to support downstream repair claims and valve replacement evidence.

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Manhole Cover and Gasket Integrity

Manhole cover condition, gasket integrity, and sealing surface documented photographically. Captured before cleaning to record the as-arrived state, and again after cleaning to confirm condition — supporting the cleaning certificate workflow with verifiable evidence.

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Data Plate and CSC Certification Plate

Tank data plate and CSC certification plate photographed for legibility and markings. Every periodic inspection can add a new timestamped photo record to the tank history — a photographic layer that can be attached to CSC periodic inspection files. CSC does not define ConPDS workflows; ConPDS does not claim CSC compliance.

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Post-Cleaning Photo Evidence

A full new set of exterior and interior photos captured after the cleaning process — documenting the tank's post-cleaning condition. These images can be attached to a cleaning certificate issued elsewhere, providing supporting photo evidence alongside the administrative document.

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Repair Pre- and Post-Documentation

Valve replacement, structural welding, and component repairs captured with paired pre- and post-repair photos linked to the tank number. Spare part serial numbers are photographed at install, creating a traceable warranty and repair claim record for the leasing company or asset owner.

Manual Methods vs. Structured ISO Tank Documentation

Tank documentation requirement	Manual methods (WhatsApp, email, shared folders)	ConPDS — structured tank evidence platform
Tank number linking	Typed into filenames — transposition errors make historical records unfindable	On-device OCR with ISO 6346 check-digit verification; every image linked to the validated tank record (retake or manual entry when recognition fails)
Pre-service baseline	Inconsistent — valve, gasket, and structural damage often attributed to the depot by default	Guided freeform pre-service photos covering exterior, valves, manhole, bottom outlet, and data plate — editorial checklist, not enforced
Cleaning certificate evidence	Certificate stands alone — shipping line disputes on cleaning quality cannot be answered	Post-cleaning photo set available to attach to a certificate issued elsewhere; evidence travels with the administrative document
CSC periodic inspection record	Form-based only — no photographic proof of inspection points or plate markings	Each periodic inspection can add a timestamped photo record of inspection points and CSC plate legibility (photo evidence only; no CSC compliance claim)
Timestamp & GPS integrity	Metadata lost at WhatsApp transfer or email compression	Capture timestamp and device-recorded GPS when available, preserved through storage — continuous audit trail
Distribution to external parties	Manual email attachments — no log of what was sent, to whom, or when	Guest portal, email, FTP, or SFTP with every distribution event logged in the audit trail

Operational Benefits of Structured ISO Tank Container Photo Documentation

A structured tank evidence workflow creates a retrievable photo record that can accompany cleaning certificates, repair claims, and periodic inspection files — while integrating alongside specialist tank management platforms rather than replacing them.

Certificate-Ready Evidence

Post-cleaning and post-repair photo sets can be attached to cleaning certificates and repair claims issued elsewhere — the administrative document and the supporting evidence travel together, so review rests on documented photos rather than recollection.

Instant Tank Record Retrieval

Any tank record — exterior, valves, manhole, post-cleaning, repair photos — retrieved instantly by tank number. No folder sorting, no filename guessing, no lost evidence even months after the original inspection event.

ISO 6346 Tank Number Traceability

Every photo linked to the ISO 6346-validated tank number at capture via on-device OCR — creating a traceable photo evidence record for ACC-related and CSC-related audit requests and certificate attachment, and reducing the transposition errors that break manual filenames. ConPDS does not claim ACC or CSC compliance.

Works Alongside Your Tank ERP

ConPDS is the photo evidence layer, not a tank management system. REST API, FTP, SFTP, and email integration connects to existing fleet and lease platforms without disruption or parallel data entry.

Works on Existing Phones

ConPDS Checker runs on the smartphones your depot staff already carry. No specialist hardware or device rollout — operational within hours for a standard deployment, and offline-capable at the wash rack or in the yard.

EU-hosted secure archive

Photos are stored encrypted on the device until upload; a local copy is retained for about seven days after successful upload. The authoritative archive is EU-hosted cloud storage with role-based access, configurable retention, and a full audit log — not WhatsApp threads or personal camera rolls.

Compliance and Security for ISO Tank Inspection Photo Records

ISO tank operations often need photo evidence alongside cleaning certificates, last cargo declarations, gas-free certificates, and CSC periodic inspection records. The structured photo layer makes those attachments retrievable — without generating the certificates and without claiming ACC or CSC compliance. CSC does not define ConPDS workflows.

privacy-by-design data architecture 256-bit HTTPS encryption on-device and in transit ISO 6346 tank number validation at capture Role-based access controls across all user levels Configurable data retention periods Capture timestamp and device-recorded GPS when available Continuous audit trail of access, share, and distribution events CSC certification plate record per periodic inspection

Every capture, distribution, and access logged: Every photo capture, distribution event, and access action is timestamped and logged automatically — supporting ACC-related and CSC-related audit requests with retrievable records rather than reconstructed explanations.

Tank identity validated at source: Tank numbers validated at capture against ISO 6346 standards via on-device OCR (check-digit verification; retake or manual entry when recognition fails) — reducing the transposition errors that break downstream cleaning certificate and repair claim workflows. For the audit trail architecture that underpins these controls, see the audit trail guide for container inspections.

External party access is fully traced: Every portal login, tank search, and photo download by authorised external parties is logged in full — including user ID, tank ID, and timestamp.

Authoritative archive in the cloud: Photos sync to the encrypted ConPDS cloud archive after upload; a local copy remains on the device for about seven days. Do not rely on WhatsApp threads or uncontrolled shared folders as the system of record.

Frequently Asked Questions — ISO Tank Container Photo Documentation

What is an ISO tank container evidence system? ▲

An ISO tank container evidence system is a structured platform that captures inspection, cleaning, and repair photos, links each image to a validated tank number, and stores records centrally for instant retrieval and distribution. It replaces WhatsApp threads, email attachments, and shared folders with an auditable photo archive that can be attached to cleaning certificates, CSC periodic inspection records, and ACC-related audit requests — photo evidence only; ConPDS does not generate certificates or claim ACC or CSC compliance.

How is ISO tank documentation different from dry container inspection? ▲

ISO tank containers and dry containers share the same ISO 6346 identification format — BIC-registered owner code, serial number, and check digit — but tank documentation often covers inspection points that dry containers do not: valves, fittings, manhole covers, gaskets, bottom outlets, pressure relief devices, and the CSC certification plate. Cleaning certificates, last cargo declarations, gas-free certificates, and CSC periodic records remain external documents. ConPDS provides the photo evidence layer that can be attached to those workflows, linked to the ISO 6346-validated tank number — it does not generate the certificates or claim ACC or CSC compliance.

Does ConPDS replace our tank management ERP platform? ▲

No. ConPDS is the structured photo evidence layer, not a tank management ERP. It does not replace specialist systems used for fleet management, lease administration, or cargo scheduling. ConPDS integrates alongside them via REST API, FTP, SFTP, and email — delivering the photo documentation they do not produce and linking every image to the tank number for cross-system traceability.

Can ConPDS support ISO tank cleaning certificate workflows? ▲

Yes. A full post-cleaning photo set — exterior, interior, valves, and manhole area — can be downloaded from the ConPDS dashboard and attached to a cleaning certificate issued elsewhere. When distribution rules are configured, photos can also be sent via email, FTP, SFTP, or API. ConPDS is the photo evidence layer only — it does not generate cleaning certificates.

Is ISO tank photo documentation privacy-by-design? ▲

Yes. All tank inspection photos are encrypted on-device and during upload using 256-bit HTTPS. Role-based access controls ensure only authorised personnel can view or download records. Photos are stored encrypted on the device until upload; a local copy is retained for about seven days after successful upload. The authoritative archive is EU-hosted — not WhatsApp threads or personal camera rolls.

Does the ISO tank documentation system work offline? ▲

Yes. ConPDS Checker runs fully offline — on-device OCR with ISO 6346 check-digit verification and all core capture functions operate without a network connection. Wrong recognition is flagged for retake or manual entry. Photos captured in the depot yard or at the wash rack sync automatically once connectivity is restored.

Can tank inspection photo records be shared with shipping lines and leasing companies? ▲

Yes. The ConPDS guest portal gives authorised external parties a secure, simplified login scoped only to the tank records they have been granted permission to view. When distribution rules are configured, photo sets can also be sent via email, FTP, or SFTP — immediately or after a delay — with every attempt logged.

Give Every ISO Tank a Structured Photo Record

Every undocumented tank inspection, cleaning cycle, or repair leaves a gap in your photo archive — one that a dispute, warranty claim, or ACC-related audit request can expose. Structured tank inspection photo records close that gap without replacing the tank management platforms already in place.

Without structured ISO tank documentation

✗ Cleaning certificate stands alone: Shipping lines dispute cleaning quality weeks after service — a certificate without a post-cleaning photo set is harder to review on facts.

✗ No pre-service baseline: Valve, gasket, or structural damage found after service is attributed to the depot with no photographic evidence to contest liability.

✗ Repair claims lack evidence: Valve replacements and structural repairs go unphotographed — warranty claims and leasing company recoveries are challenged or denied.

✗ CSC- and ACC-related audit gaps: Periodic inspection files lack timestamped photos of the actual inspection points and plate markings when a counterparty asks for evidence.

✗ Manual retrieval failure: At 40+ tanks per day, locating a specific tank's post-cleaning photos from four weeks ago in shared folders is operationally unworkable.