A41 - OUR EXCLUSIVE FOB TANK TO TANK PROCEDURE HOUSTON, ROTTERDAM, JURONG, FUJAIRAH Exclusive : FOB Tank to Tank Procedure for Houston Rotterdam Jurong and Fujairah
- Jose Pagan
- 1 day ago
- 10 min read
Tank-to-tank petroleum trading moves fast only when the paperwork is clean, the product is verifiable, and both sides know exactly when money, product, and title change hands. The A41 procedure is built around that sequence.
This guide explains the exclusive FOB tank to tank procedure used for transactions in major storage hubs such as Houston, Rotterdam, Jurong, and Fujairah. It follows the seven-step structure in the brief, but adds practical context around each document, inspection point, and payment milestone.
This is informational content only. Trade terms, banking instruments, sanctions rules, terminal requirements, and title transfer language should always be reviewed by qualified legal, banking, and logistics professionals before any transaction moves forward.
What the A41 FOB tank-to-tank procedure is designed to do
An FOB tank-to-tank transaction is meant to confirm three things before the buyer pays:
The product exists in the seller’s tank.
The buyer can inspect it through an accepted inspection company.
The product can be injected into the buyer’s nominated tank after a successful dip test.
The hubs named in this procedure, Houston, Rotterdam, Jurong, and Fujairah, are major petroleum storage and trading locations. Each has its own terminal rules, port practices, inspection norms, and logistics constraints. The procedure must fit the specific terminal, not just the commercial intent of the parties.
In broad terms, the A41 flow starts with the buyer’s formal purchase request, moves through proof of product, allows inspection, then closes with injection, MT103 payment, title transfer, and commission settlement.
The key idea is simple: verification comes before payment, and payment comes before title transfer.
The parties and documents that keep the deal moving
A tank-to-tank transaction usually includes more than a buyer and seller. It may involve storage operators, logistics teams, inspectors, banks, intermediaries, and sometimes title holders or mandate holders. The procedure works only when each party’s role is clear.
The main transaction documents in the A41 process include:
Document | Main purpose | Who usually acts on it |
ICPO | Formal buyer purchase order | Buyer |
TSA | Confirms tank storage access or arrangement | Buyer or buyer’s logistics |
Commercial Invoice | Sets product, quantity, price, port, and payment basis | Seller, then buyer signs |
PPOP | Shows preliminary proof of product | Seller |
TSR | Confirms storage receipt details | Storage side or logistics side |
DTA | Allows dip test inspection | Seller |
ATV | Allows verification of documents or product claims | Seller |
ATSC | Authorizes sale and collection | Seller |
SGS report | Shows independent inspection result | Inspection company |
NCNDA/IMFPA | Protects intermediary roles and payment commissions | Buyer, seller, intermediaries |
MT103 | Bank wire payment message | Buyer’s bank |
Title transfer document | Moves ownership after payment | Seller |
A clean transaction file should also identify the product grade, quantity, price formula, port, tank number or storage reference, inspection process, payment timing, and governing law.
Step 1. Buyer issues the ICPO with required attachments
The procedure begins when the buyer issues an Irrevocable Corporate Purchase Order, commonly called an ICPO. This document tells the seller that the buyer intends to purchase the product under the seller’s working procedure.
Under the A41 structure, the ICPO should contain:
Seller’s working procedures accepted by the buyer
Buyer’s banking details
Scanned copy of buyer’s passport
TSA, or Tank Storage Agreement
The ICPO must be specific enough for the seller to evaluate the buyer’s readiness. A vague ICPO slows the deal down because the seller cannot confirm whether the buyer has storage, funds, and a clear receiving plan.
The TSA is especially important in a tank-to-tank deal. It shows that the buyer has a receiving tank arrangement, or at least a documented storage pathway, at the relevant port. Without storage capacity, injection cannot happen.
A passport copy or identity document raises privacy and compliance concerns. Parties should exchange sensitive identity information through secure channels and only when the request is lawful, relevant, and proportionate. KYC checks matter, but personal data should never be handled casually.
Step 2. Seller issues the Commercial Invoice for product in tanks
After receiving and reviewing the buyer’s ICPO package, the seller issues a Commercial Invoice for the product in tanks at the port.
The Commercial Invoice should match the deal terms already agreed by the parties. It normally includes:
Product name and grade
Quantity
Price and currency
Port and terminal reference, where allowed
Payment terms
Inspection terms
Validity period
Seller and buyer details
Banking information
Contract or transaction reference
In this A41 procedure, the buyer and the buyer’s logistics team sign the Commercial Invoice and return it to the seller. This matters because the logistics team must be aligned with the transfer plan. A signed invoice from the buyer alone may not be enough if the receiving tank, inspection access, or injection schedule has not been coordinated.
The Commercial Invoice is not just a price document. It becomes a control point for the product, port, quantity, inspection, and payment sequence.
Step 3. Seller issues the PPOP package to buyer
Once the Commercial Invoice has been signed and returned, the seller issues the buyer’s PPOP package. PPOP means Partial Proof of Product or Preliminary Proof of Product, depending on the parties’ preferred wording.
In the A41 structure, the seller’s PPOP package includes the following:
GPS coordinates
Tank Storage Receipt, known as TSR
Injection report
Unconditional Dip Test Authorization Letter, known as DTA
Authorization to Sell, and Collect, known as ATSC
Authorization to Verify, known as ATV
Fresh SGS report in seller’s tank
Each document has a role.
GPS coordinates support physical traceability
GPS coordinates help identify the location of the tank or terminal area connected to the product. They should be consistent with the port, terminal, and storage reference on the other documents.
Coordinates alone do not prove product ownership or availability. They are one piece of the verification chain.
The TSR supports storage verification
A Tank Storage Receipt is used to show that product is held in a tank under a recognized storage arrangement. The buyer and buyer’s logistics team should check that the TSR aligns with the seller’s details, product description, quantity, date, tank reference, and terminal rules.
A TSR should be verifiable by the storage operator or through the approved verification channel. If a document cannot be verified, it should not be treated as reliable.
The injection report shows tank movement history
The injection report helps show that product was injected into the seller’s tank. It can support the seller’s claim that the product is physically present and not just being offered on paper.
The buyer should compare the injection report with the TSR, SGS report, and DTA. Consistency across documents is more valuable than any single document standing alone.
The DTA gives permission for dip testing
The Dip Test Authorization Letter allows the buyer’s appointed inspection company to conduct a dip test in the seller’s tank. In the A41 procedure, the DTA is described as unconditional, which means the buyer should have the right to inspect without extra hidden conditions after receiving the document.
In practice, inspection access still depends on terminal rules, safety requirements, scheduling, and authorization from the relevant storage operator.
The ATSC and ATV support authority and verification
The Authorization to Sell, and Collect confirms that the seller is allowed to sell the product and receive payment. The Authorization to Verify allows the buyer or designated parties to verify the relevant documents or product claims.
These documents are especially important where mandates, title holders, or intermediaries are involved. The buyer should know who has authority to sell, who can collect funds, and who can confirm product information.
The fresh SGS report supports independent quality and quantity claims
A fresh SGS report in the seller’s tank provides third-party inspection information. SGS is widely known in commodity inspection, but the buyer should still verify the report through proper channels.
The report should match the product, quantity, tank, date, and port named in the transaction documents. If the report is old, inconsistent, or unverifiable, the buyer should require clarification before proceeding.
Step 4. Seller issues NCNDA and IMFPA for signature
After the PPOP stage, the seller issues the NCNDA and IMFPA to all intermediaries involved in the transaction and to the buyer for signing.
The NCNDA, or Non-Circumvention, Non-Disclosure Agreement, is meant to protect parties from being bypassed after introductions or commercial relationships have been made. The IMFPA, or Irrevocable Master Fee Protection Agreement, addresses commission payments to intermediaries.
These documents should match the actual transaction structure. They should identify:
Intermediary names or entities
Commission amounts or percentages
Payment trigger
Paying party
Bank details
Transaction reference
Duration and scope
Dispute handling process
Commission documents often cause delays when they are unclear, duplicated, or inconsistent with the main transaction documents. A buyer and seller should not let commission paperwork create confusion around the product sale itself.
Step 5. Buyer arranges SGS inspection and sends TSR
The buyer then arranges inspection by SGS at the buyer’s expense. The inspection usually includes a dip test and may include quality and quantity checks, depending on the agreed scope.
The buyer’s inspection stage is one of the most important safeguards in the A41 procedure. It gives the buyer a chance to confirm that the product exists in the seller’s tank and matches agreed specifications before payment.
The inspection process should be scheduled through approved terminal channels. Inspectors may need:
DTA from the seller
Terminal access approval
Safety clearance
Tank details
Product details
Buyer appointment letter
Inspection scope
Sampling instructions
After inspection, the buyer sends TSR as required under the procedure. This supports the next step, which is injection into the buyer’s tank.
Step 6. Product is injected and buyer pays by MT103
After a successful dip test in the seller’s tanks, the product is immediately injected into the buyer’s tanks. This is the core operating moment of a tank-to-tank transaction.
The injection process should be recorded and confirmed by the relevant logistics parties. The buyer should make sure the receiving tank is ready, authorized, and compatible with the product.
Key checks before injection include:
Buyer’s tank is available and approved
Storage documents are active
Product specifications match the receiving plan
Transfer line and terminal permissions are confirmed
Inspection results are accepted
Payment instructions match the signed invoice
Once injection is complete or reaches the agreed payment trigger, the buyer makes payment for the product via MT103. MT103 is a standard SWIFT payment message used for international wire transfers.
After payment, the seller transfers title ownership to the buyer. The title transfer document must be clear about when ownership passes and what quantity is covered. It should also match the inspection and injection records.
Step 7. Buyer and seller pay commissions to intermediaries
The final step is commission payment. Under the A41 procedure, the buyer and seller pay commissions to their respective intermediaries.
This should follow the signed NCNDA/IMFPA and any related commission agreements. Payment should not rely on informal promises or side messages. The commission file should be complete before closing, not negotiated after product movement.
A good commission structure avoids three common problems:
Different people claiming the same role
Payment instructions that do not match signed documents
Commission claims that conflict with the main sale contract
Intermediaries can help connect real buyers, sellers, storage providers, and logistics channels. But the transaction should always remain document-driven.
Common checks before using this procedure
The A41 process is simple on paper, but real transactions involve risk. Before following any tank-to-tank procedure in Houston, Rotterdam, Jurong, or Fujairah, parties should complete basic due diligence.
Check the seller’s authority to sell. Verify that the seller can legally offer the product and collect payment.
Check the product documents. Compare the TSR, SGS report, injection report, DTA, ATV, and ATSC for consistency.
Check the storage operator. Confirm document verification channels and terminal procedures.
Check sanctions and trade compliance. Petroleum trading can involve restricted parties, vessels, banks, jurisdictions, or products.
Check the payment path. Bank details should match the signed Commercial Invoice and authorized collecting party.
Check title language. The contract should state exactly when title and risk transfer.
Check data security. Passport scans, bank details, and storage documents should be exchanged securely.
A tank-to-tank deal should not depend on trust alone. It should depend on documents that can be verified and product that can be inspected.
How the procedure differs by hub
The same A41 sequence can apply across Houston, Rotterdam, Jurong, and Fujairah, but each hub has different practical conditions.
Houston has deep petroleum infrastructure and busy terminal networks. Scheduling, storage access, and pipeline movement can require tight coordination.
Rotterdam is one of Europe’s most important oil and refined product hubs. Compliance, documentation, and terminal procedures are usually strict and structured.
Jurong is a major Singapore energy and petrochemical area. Buyers and sellers should expect careful documentation and controlled terminal access.
Fujairah is a major bunkering and storage hub in the Middle East. Tank access, product verification, and storage documentation must align with the specific terminal involved.
The procedure should be adapted to the terminal’s real operating rules. If a document says one thing and the terminal requires another, the terminal process will control the physical movement.
A practical A41 transaction checklist
Before the buyer proceeds to payment, the file should contain a clean record of each step:
Buyer ICPO issued with seller’s procedures accepted
Buyer banking details included
Buyer identity document provided through secure channels
TSA attached or confirmed
Seller Commercial Invoice issued
Buyer and buyer’s logistics signed and returned the invoice
Seller PPOP package received
GPS coordinates checked
TSR reviewed and verified
10. Injection report reviewed
11. DTA received for dip test
12. ATSC reviewed for authority to sell and collect
13. ATV reviewed for verification rights
14. Fresh SGS report checked
15. NCNDA/IMFPA signed where applicable
16. Buyer arranges SGS inspection at buyer’s expense
17. Dip test completed successfully
18. Buyer’s TSR sent as required
19. Product injected into buyer’s tank
20. Buyer pays by MT103
21. Seller transfers title ownership
22. Commissions paid according to signed agreements
This checklist does not replace a contract. It helps the parties confirm that the transaction has not skipped a critical control point.
The main takeaway
The A41 FOB tank-to-tank procedure is built around a clear order of performance: buyer submits ICPO and storage readiness, seller issues invoice and PPOP, buyer verifies through inspection, product moves into buyer’s tank, payment is made by MT103, title transfers, and commissions are paid.
That sequence protects both sides when the documents are real, the product is available, and the terminal process supports the transfer. The safest transactions are the ones where every claim can be verified before money changes hands.
Frequently Asked Questions (FAQ's)
What is Tank-to-Tank (TTT)?
Tank-to-Tank is a petroleum trading procedure where fuel is transferred between storage tanks after the buyer completes verification and fulfills the contractual payment requirements.
Is SGS inspection available?
Yes. Independent inspection companies such as SGS may be engaged when specified in the transaction agreement.
What documents are included in PPOP?
Depending on the supplier, PPOP may include a Tank Storage Receipt (TSR), Authorization to Verify (ATV), Product Passport, Certificate of Origin, Quality Certificate, Dip Test Authorization, and other commercial documentation.
Which products are available?
Qualified buyers may purchase EN590, Jet A-1, D6 Virgin Fuel Oil, Crude Oil, LNG, LPG, Naphtha, LCO, Gasoline, Mazut, and Urea, subject to supplier availability.
Where are Tank-to-Tank transactions available?
Transactions may be arranged through major international petroleum hubs including Rotterdam, Houston, Fujairah, and Singapore.
Professional FOB Tank-to-Tank Fuel Transactions
Nationwide Brokerage Group connects qualified buyers with verified refineries and title holders for Tank-to-Tank (TTT) fuel transactions. We facilitate secure petroleum trading procedures for bulk fuel products stored at major international storage terminals.
Our supplier network provides access to premium petroleum products through industry-standard commercial procedures designed to ensure transparency, efficiency, and compliance throughout the transaction.
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