API 510 vs API 570 — Pressure Vessel vs Piping Inspector Certification
API 510 certifies authorised pressure vessel inspectors; API 570 certifies authorised piping inspectors. Both are issued by the American Petroleum Institute Individual Certification Program (ICP). This comparison covers scope of work, exam structure, $730 examination fee, work-experience prerequisites, $85K-$140K salary range, and whether holding both certifications is worth the time.
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Code Stack + Compliance
Audit-defensible records per ISO 9001:2015 + ISO 17020 (inspection body) + ISO 17025 (calibration lab) + ISO 17024 (personnel cert body). ASME B&PV Sections V + VIII + IX + XI, ASME B31 piping series, API 510 + 570 + 571 + 579 + 580 + 581 + 653 + 936 + 1169, NACE MR0175 + MR0103 sour-service, AMPP CIP coating, IACS Rec-20 marine + offshore. Dual-scheme inspector cert (ASNT NDT Level II/III + ISO 9712). ASNT NDT Level III final disposition + procedure approval on every engagement.
Delivery Model + Free Consultation
Three delivery models: On-site mobilisation 24-72h via Houston + Dubai + Mumbai + Singapore + London hubs; Remote procedure authoring + Level III sign-off (24-hour turnaround); Hybrid — local Level II + Atlantis Level III remote oversight. Atlantis NDT publishes no pricing — pricing varies by region, scope, delivery model, team size. Request your free 30-minute consultation with Atlantis NDT founder Anoop Rayavarapu (ASNT NDT Level III multi-method, API 653, ISO 9001 Lead Auditor). Tailored quote within 24 hours. Affordable, accessible, fully customizable.
Frequently Asked Questions
What’s the difference between API 510 and API 570?
API 510 certifies you to inspect pressure vessels — the static, ASME Section VIII equipment like reactors, separators, columns, drums, and heat-exchanger shells. API 570 certifies you to inspect process piping — the in-service piping systems built to ASME B31.3 that connect those vessels (transfer lines, manifolds, headers, on-plot piping). Same inspection-code DNA, different asset class. Most large refineries and petrochemical complexes have both vessels and piping, which is why senior inspectors often hold both certifications.
Which one should I get first?
Most candidates start with API 510 because pressure vessel codes are more conceptually contained — fewer reference codes, slightly more straightforward thickness/MAWP calculations. Some recommend API 570 first if your background is heavily piping-oriented (you’ll already know B31.3). Either way, the prep skills (open-book navigation, code cross-references, calculation practice) transfer almost entirely. If you can pass one, you can pass the other in the next exam window with focused study on the new code references.
Can I hold both API 510 and API 570?
Yes — and most senior fixed-equipment inspectors do. There’s no conflict. You take separate exams, pay separate fees, and recertify each independently every 3 years. Holding both is the standard for inspection supervisors, RBI engineers, and Level III consultants working across refining and petrochemical assets. Adding API 653 (storage tanks) on top is the typical ‘triple cert’ held by senior fixed-equipment professionals.
Is API 510 or API 570 harder?
Equivalent difficulty in practice. Same exam structure (171 questions, 7.5 hours, closed + open book), same pass mark (70%), and similar industry pass rates (~50–60% first attempt, ~85% with structured prep). The reference-code stack differs slightly — API 570 includes B31.3 piping calculations and B16.5 flange ratings which some candidates find heavier; API 510 includes more vessel-specific calculations (MAWP, MDMT) and ASME Section VIII Div. 1 navigation. Whichever code stack matches your day-to-day work feels easier.
What does an API 510 or API 570 inspector earn in 2026?
USA: API 510 inspectors earn $85,000–$140,000 base ($110K average) plus overtime and call-out premiums. API 570 inspectors are nearly identical at $85,000–$135,000 base ($108K average). Middle East tax-free: $95,000–$160,000 plus housing, transport, and per diem (often pushing total package to $180K+). India: ₹15L–₹35L per annum depending on operator (Reliance, IOCL, BPCL, ONGC), city, and whether the role is contract or permanent. Holding both certs typically adds $10K–$20K to US base salary.