ISO 15848-1 Inspection & Test Plan (ITP)
A typical stage-wise ITP / quality plan for valves supplied to ISO 15848-1 — inspection activities, tests, acceptance references and verifying documents, with recommended hold, witness and review points for QC and third-party inspection.
What is the ITP for ISO 15848-1 valves?
An Inspection & Test Plan (ITP) sequences every check between raw material and dispatch, and assigns each an inspection level — Review (document check), Witness (inspector may attend), or Hold (work stops until released). The plan below is a typical ITP for valves built to ISO 15848-1 (Industrial Valves - Measurement, Test and Qualification Procedures for Fugitive Emissions - Part 1); the tests and documents are drawn directly from the standard's requirements. Use it to structure your QAP or coordinate third-party inspection.
1. Documentation & design review
Review- Approval of drawings, datasheets and QAP against ISO 15848-1
- Tightness Class A: ≤1×10⁻⁴ mg/(s·m) - tightest class for LDAR programmes and EU BREF BAT compliance
- Tightness Class B: ≤5×10⁻⁴ mg/(s·m) - intermediate class for most EU industrial valve specs
2. Raw material verification
Review- Material Test Reports (MTRs) review per EN 10204 3.1/3.2
- Positive Material Identification (PMI) of pressure-containing parts
3. Dimensional inspection
Witness- Dimensional check per ISO 15848-1 / ASME B16.34 / applicable face-to-face
- Wall thickness verification
4. NDE (as applicable)
Witness- Visual, and RT/UT/MPI/DPT of castings/welds per specification
5. Pressure & performance testing
Hold- Helium leak test at rated class temperature and pressure
- Minimum 210 mechanical cycles (CO1) or 2,500 cycles (CO2) before qualification
- Tightness measurement using mass spectrometry or equivalent helium leak detector
Primary hold point — witnessed shell, seat and backseat tests.
6. Marking, painting & preservation
Review- Nameplate & body marking verification
- Painting/coating DFT check, end protection and preservation
7. Final documentation
Hold- ISO 15848-1 Type Test Certificate from accredited third-party laboratory
- Tightness class (A/B/C), endurance class (CO1/CO2), and temperature class on certificate
Final documentation review before release/dispatch.
This is a typical ITP framework populated from ISO 15848-1 requirements, for reference. The actual hold/witness/review split is agreed per project between purchaser, manufacturer and the third-party inspection agency in the approved QAP. Confirm project-specific requirements before use.
Need ISO 15848-1 valves with a full ITP?
We supply ISO 15848-1-compliant valves with a project-specific ITP, in-house QC and third-party inspection (SGS, BV, TUV, DNV) coordination — hold and witness points accommodated. Get a 24-hour quote.