Petroleum Cargo Inspection
Independent quantity and quality surveying at load and discharge.

What is petroleum cargo inspection?
Petroleum cargo inspection is the independent measurement and sampling of oil at each custody transfer. Inspectors gauge shore and ship tanks, take representative samples, check lines and seals, and reconcile the quantities against bills of lading and terminal records, so buyer and seller work from one verified figure.
The Jansma approach to inspection services
Our in-house inspection team, complemented by nominated third-party surveyors, handles every custody transfer across our network. We gauge tanks, witness sampling, seal lines and reconcile figures against BL and terminal records, so when a dispute arises, the evidence is already there.
- Standards
- TIC Council, API MPMS, ISO 4269
- Coverage
- All five Jansma ports + nominated third parties
- Reporting
- Digital, within 24 hours of completion
- Dispute support
- Included in every assignment
What the desk handles.
Tank gauging
Ullage, temperature and water-bottom measurements to API MPMS Ch. 3.
Vessel gauging
Ship's ullage sounding with draft survey reconciliation.
Sampling
Upper, middle, lower, all-levels and running samples per ISO 3170.
Line displacement
Witnessed line flushing and displacement with sealed blanks.
Bunker survey
Pre and post-delivery ROB with density correction.
Dispute investigation
Independent forensic analysis of shortage and contamination claims.
Why customers choose us.
Owner-operator perspective
Because we own half the tanks, we're allergic to sloppy surveying.
Digital-first reporting
Every report is delivered electronically within 24 hours with full photo audit trail.
Single global standard
The same procedures in Rotterdam, Houston, Jurong, Fujairah and Zhoushan.
Often combined with.
Talk to the desk that actually runs this service.
No call centres, no forms that vanish. You'll speak to a commercial manager who owns the P&L for this line.
Contact the desk


