Refining and petrochemical NDT Level III Consulting in Detroit

Detroit's inspection demand runs along the southwest riverfront and the east-side assembly plants. Marathon's Detroit Refinery in the 48217 ZIP is Michigan's only refinery, permitted above its 140,000 bpd nameplate, built around heavy Canadian crude and carrying an on-site hydrogen plant. Stellantis assembles Jeep Grand Cherokees at the Detroit Assembly Complex - Mack, a $1.6 billion conversion of the old Mack Avenue engine plant supporting 130,000 to 150,000 units a year, and GM builds electric pickups at Factory ZERO. DTE's generation and gas network plus the Great Lakes Water Authority plant add utility work. U.S. Steel's Zug Island ironmaking has been idle since 2020.

Stellantis assembles Jeep Grand Cherokees at the Detroit Assembly Complex - Mack, a $1.6 billion conversion of the old Mack Avenue engine plant supporting 130,000 to 150,000 units a year, and GM builds electric pickups at Factory ZERO. DTE's generation and gas network plus the Great Lakes Water Authority plant add utility work. U.S. Steel's Zug Island ironmaking has been idle since 2020. Operators including Marathon Detroit Refinery, Stellantis Detroit Assembly Complex - Mack and Jefferson North, GM Factory ZERO (Detroit-Hamtramck Assembly) set the qualification bar their contractors inherit. Turnaround work is bid months ahead and audited at the gate; a lapsed certification found at mobilisation removes the technician from the job that day.

Source: Per-city industrial and compliance research file; ASNT SNT-TC-1A employer certification framework

Refining and petrochemical NDT programmes in Detroit — regime, methods and signatures
Factor	What applies	Why it matters
Governing regime	OSHA PSM mechanical integrity under 29 CFR 1910.119, with API 510, 570 and 653 owner-user inspection programmes above it	What the programme is audited against
Methods in scope	UT, PAUT, RT, MT, PT, VT	Each needs its own procedure and qualified personnel
What the Level III signs	the written practice, the UT thickness and PAUT procedures the turnaround runs on, and the examination records the owner audits before mobilisation	The signatures an auditor traces first
Operators setting the bar	Marathon Detroit Refinery, Stellantis Detroit Assembly Complex - Mack and Jefferson North, GM Factory ZERO (Detroit-Hamtramck Assembly), DTE Energy	Pre-qualification flows down to every contractor bidding
Other sectors in this market	Petroleum refining, Automotive assembly, Electric generation and gas distribution, Water and wastewater infrastructure, River terminals and heavy marine	Firms working across them answer to more than one regime
Codes named locally	EGLE (Michigan Dept of Environment, Great Lakes and Energy), OSHA PSM (29 CFR 1910.119), API 510/570/653, AWS D1.1, ASNT SNT-TC-1A	What contracts in this metro actually specify
Engagement shape	Retained cover · project cover · interim cover before an audit date	Scope follows the audit calendar

What governs refining and petrochemical NDT work in Detroit?

OSHA PSM mechanical integrity under 29 CFR 1910.119, with API 510, 570 and 653 owner-user inspection programmes above it. Turnaround work is bid months ahead and audited at the gate; a lapsed certification found at mobilisation removes the technician from the job that day.

Which methods does a refining and petrochemical programme in Detroit need?

UT, PAUT, RT, MT, PT, VT are the methods this sector runs on. Each needs its own approved procedure and personnel qualified in that specific method — a Level III qualified in ultrasonics cannot approve a radiographic procedure, and signing outside your own method list is among the most common audit findings.

Can an outside Level III cover a refining and petrochemical firm in Detroit?

Yes, where the regime accepts employer-based certification. The obligation sits on the employer, and a contracted Level III can write and sign the written practice, approve procedures and administer examinations, provided they are qualified in each method they sign for. The employer still owns the records.

Who sets the qualification bar in Detroit?

Marathon Detroit Refinery, Stellantis Detroit Assembly Complex - Mack and Jefferson North, GM Factory ZERO (Detroit-Hamtramck Assembly), DTE Energy and the contractors bidding into their supply chains. Approved-supplier requirements flow down, so a subcontractor inherits the bar whether or not its own client names it, which makes audit-readiness a bidding issue rather than a paperwork one.

How long does it take to get refining and petrochemical audit-ready?

The written practice and procedures can be drafted and signed in weeks. What cannot be compressed is documented experience — on-the-job hours accrue in real time, and reconstructing undocumented hours needs employer attestation. Firms that start when the audit is scheduled rather than announced clear it without findings.

Does a firm in Detroit working several sectors need separate programmes?

One written practice can cover several sectors, but it must satisfy the strictest regime it touches. A firm working Petroleum refining, Automotive assembly, Electric generation and gas distribution in this market answers to different auditors with different criteria, and the usual failure is a practice written for the easiest of them.

Speak to an ASNT NDT Level III

Atlantis NDT provides ASNT Level III consulting, NDT training to SNT-TC-1A and ISO 9712, inspection management software and independent report validation. Request a free consultation and we will return a tailored quote — affordable, accessible and fully customizable to your programme.