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Governance & Traceability

Quality Assurance & Export Compliance

Upholding the highest standards of cargo verification through independent testing, certified draft surveys, and complete statutory documentation.

Independent Surveyor Verification

Third-party integrity is the cornerstone of every export cargo we dispatch.

In international commodity trading, objective quality assessment eliminates uncertainty. PT Intan Nusantara Indonesia coordinates with accredited international inspection agencies to supervise every stage of cargo movement.

Surveyors perform continuous sampling during conveyor belt loading, mechanical collection from falling streams, or systematic increment collection from barges in accordance with ISO 13909 and ASTM D2234 guidelines.

Contractual Binding: The Certificate of Sampling and Analysis (COA) issued by the appointed independent surveyor serves as the final commercial determinant for specification conformity and letter of credit negotiation.
Accredited independent testing laboratory analyzing coal samples
Accredited Testing

ISO & ASTM Laboratory Analysis

Independent testing by SGS, Sucofindo & Surveyor Indonesia

Surveyor

SGS Indonesia

Global Independent Inspection

Pre-shipment sampling, composite laboratory testing, draft survey, and hold inspection.

Surveyor

PT Sucofindo (Persero)

State-Accredited Surveyor

Official Indonesian statutory surveyor for mineral verification and export certification.

Surveyor

PT Surveyor Indonesia

State-Accredited Surveyor

Cargo sampling, weight verification by draft survey, and export trade compliance.

Surveyor

Carsurin

Independent Testing Laboratory

Accredited thermal coal laboratory testing under international ASTM and ISO standards.

Laboratory Testing Parameters & Standards

Standard analytical parameters evaluated for every export consignment.

Analysis ParameterTesting StandardCommercial & Technical Significance
Gross Calorific Value (GCV / GAR)ASTM D5865 / ISO 1928Determines the energy yield and commercial pricing value of the thermal cargo.
Net Calorific Value (NCV / NAR)Calculated via ISO 1928Reflects real available heat output after accounting for moisture latent heat.
Total Moisture (TM)ASTM D3302 / ISO 589Critical for combustion efficiency, billing weight adjustments, and boiler handling.
Inherent Moisture (IM)ASTM D3173 / ISO 11722Measures structural moisture retained within coal pores at equilibrium.
Ash ContentASTM D3174 / ISO 1171Impacts boiler slagging, fly-ash generation, and electrostatic precipitator operation.
Volatile Matter (VM)ASTM D3175 / ISO 562Influences flame ignition ease, furnace stability, and burnout kinetics.
Total Sulfur (TS)ASTM D4239 / ISO 19579Essential for flue gas desulfurization (FGD) limits and emissions compliance.
Hardgrove Grindability Index (HGI)ASTM D409 / ISO 5074Measures pulverizer mill wear, grindability, and power consumption.
Ash Fusion Temperatures (AFT)ASTM D1857 / ISO 540Evaluates IDT, ST, HT, and FT to prevent catastrophic boiler wall fouling.

Statutory Indonesian Export Compliance

We operate in strict adherence to Indonesian mineral export mandates, verifying royalty payments, mining origin legitimacy, and environmental export criteria before loading clearance.

ESDM Legitimacy

All coal supplied originates from mines holding valid Production Operation Mining Business Licenses (IUP-OP / PKP2B) recognized by the Ministry of Energy and Mineral Resources.

Royalty Clearance (PNBP)

Verification of Non-Tax State Revenue (PNBP) royalty settlements through the SIMPONI system, ensuring legal clearance for export dispatch.

Customs Formalities (PEB)

Electronic customs declarations (Pemberitahuan Ekspor Barang - PEB) processed with Indonesian Directorate General of Customs and Excise.

Review Surveyor Certificates & Protocols

Our trade specialists can walk you through past inspection reports, sampling methods, and contract terms.

Discuss Quality Terms