API 653 Tank Inspection Support in Michigan

Short answer: In Michigan, an API 653 tank inspection is evaluated and signed by the owner's API 653 Authorized Inspector. No single Michigan rule mandates API 653 for every tank; the requirement usually comes through EPA SPCC, PHMSA's breakout-tank rule, OSHA process safety management or the owner's own integrity programme, alongside state fire-code and spill-prevention rules. Atlantis performs the NDE behind the inspection, floor MFL with UT prove-up, shell UT and repair-weld examination, and delivers it to your inspector in a structured digital report.

Michigan's tank population is shaped by two things: the Great Lakes and the winter. Crude and products pipelines cross the state to feed the Detroit refinery and Ontario's refining cluster across the St. Clair River, products terminals ring Detroit and the state's larger cities, lake ports handle fuel and chemicals, and Midland and the Detroit Downriver area hold major chemical complexes. Every tank owner works with freeze-thaw cycles, lake-effect snow and a heightened public focus on protecting the Great Lakes. This page explains where Michigan's tanks are, what API 653 asks for, how the federal and state rules overlap, and exactly what Atlantis does on site. Atlantis performs the NDE; your API 653 Authorized Inspector remains inspector of record and signs the inspection report. To start, send us your Michigan tank list.

Where API 653 tanks are in Michigan

Direct answer: Michigan's field-erected tanks are concentrated at the Detroit refinery and Downriver industrial corridor, at pipeline terminals and breakout facilities along the crude and products pipelines that cross the Lower Peninsula, at products terminals around Detroit, Flint, Lansing, Grand Rapids and other cities, at Great Lakes ports, at chemical plants in Midland and the Downriver area, and at ethanol, agricultural and utility sites.

Detroit and the Downriver corridor

Marathon Petroleum's Detroit refinery in southwest Detroit is Michigan's only operating refinery. Its tank field holds crude, intermediates, blendstocks, asphalt and finished products, and the surrounding Downriver communities along the Detroit River, including River Rouge, Ecorse, Wyandotte and Trenton, host terminals, steel and chemical plants and power stations with their own tankage. Industrial soils, old fill and a riverfront water table make soil-side floor corrosion and settlement recurring concerns.

Pipeline corridors

Enbridge's Line 5 crosses the Upper Peninsula and the Straits of Mackinac on its way to Sarnia, Ontario, and its Line 78, the replacement for the former Line 6B, crosses southern Michigan toward the St. Clair River. Products pipelines bring fuel into the state from the Chicago area and distribute it to inland terminals. Pump stations and terminals on these systems include breakout tanks, which brings the federal hazardous-liquid pipeline rules and their API 653 requirement into play. Michigan also remembers the 2010 Line 6B release into the Kalamazoo River, one of the largest inland oil spills in US history, which keeps public and regulatory attention on pipeline and terminal integrity high.

Products terminals around the state

Gasoline, diesel and jet fuel terminals serve metro Detroit, Flint, Lansing, Grand Rapids, Kalamazoo, Saginaw and Bay City, and northern Michigan. Many are mid-size tank farms built in the 1950s to 1970s, with floors replaced at least once and shell courses carrying patches and nozzle changes. Seasonal heating-oil and propane demand shapes when tanks can be taken out of service.

Great Lakes ports

Fuel, asphalt, chemicals and liquid fertilizer move through ports on the Detroit and St. Clair rivers, the Saginaw River at Bay City and Essexville, Muskegon and other Lake Michigan harbours, and the Upper Peninsula. Shipping halts in winter when the Soo Locks close, so lake-supplied terminals build inventory in autumn and draw it down through the winter, which concentrates outage windows in spring and summer.

Chemical, ethanol, agricultural and utility tanks

The chemical complex at Midland and plants along the Detroit River use large carbon-steel and alloy tanks for raw materials, intermediates and products. Ethanol plants in the southern Lower Peninsula hold ethanol, denaturant and process tanks; agricultural cooperatives store liquid fertilizer; and utilities keep fuel-oil tanks for backup generation. Not every one of these is an API 650 oil tank, so the owner and inspector first agree which code applies before an NDE scope is written. Northern Lower Peninsula oil and gas production adds smaller lease tanks, usually handled under different standards.

What API 653 requires, in plain terms

Direct answer: API 653 governs inspection, repair, alteration and reconstruction of in-service atmospheric steel tanks built to API 650 or API 12C. It calls for monthly owner checks, a formal external inspection by the Authorized Inspector, shell UT thickness surveys and an out-of-service internal inspection, with intervals tied to measured corrosion inside code ceilings. The current Fifth Edition has addenda through Addendum 4 (July 2025).

Routine in-service checks. Owner personnel inspect each tank at least monthly for leaks, shell distortion, settlement, coating and roof damage, seal and drain problems and foundation deterioration. In a Michigan winter that includes snow load on fixed and floating roofs, frozen roof drains and ice damage to platforms and gauging equipment.

Formal external inspection. The Authorized Inspector performs an external inspection at least every five years, or sooner where shell corrosion is rapid, since the code ties the interval to a quarter of the remaining shell corrosion life.

Shell UT thickness. Where UT readings are used, the code requires them within five years while the corrosion rate is unknown, then at the lesser of half the remaining shell corrosion life or fifteen years.

Internal inspection. For a new tank, the first internal is due within ten years, which credited safeguards such as linings, cathodic protection, leak detection and release prevention barriers can extend to a ceiling of twenty years, or thirty with a release prevention barrier. Later intervals are calculated from measured bottom corrosion so the floor stays above the code's minimum at the next inspection, within the same ceilings, or set by a qualifying risk-based assessment carried out by the owner's specialists. The risk-based option is not available for pipeline breakout tanks.

Settlement, brittle fracture and repairs. The code includes an annex for evaluating settlement, a brittle-fracture assessment for older tanks and tanks changing service or operating temperature, which is relevant in cold Michigan winters, and examination and testing requirements for repairs, with API 650 as the construction reference. Addendum 4 revised the text on measuring tank-bottom plate thickness, so check procedures against the current edition and addendum from api.org. All of these are decisions for the owner and the inspector. See API 653 tank inspection intervals explained and the API 653 tank inspection guide.

Michigan regulations that sit on top of API 653

Direct answer: In Michigan, API 653 usually becomes mandatory through federal rules: EPA SPCC integrity testing, PHMSA's breakout-tank rule (enforced directly by PHMSA, since the Michigan Public Service Commission covers gas pipelines only) and OSHA PSM as enforced by MIOSHA. State fire-code tank rules from LARA's Bureau of Fire Services and EGLE's Part 5 spill-prevention rules add their own obligations. Confirm current requirements with each agency.

LARA Bureau of Fire Services: aboveground tank rules

The Storage Tank Division of the Bureau of Fire Services, within the Michigan Department of Licensing and Regulatory Affairs (LARA), regulates the installation of aboveground storage tank systems holding petroleum and other liquids with a flash point below 200 degrees Fahrenheit, under Michigan's Storage and Handling of Flammable and Combustible Liquids rules, which adopt NFPA 30 with Michigan amendments. Larger tank installations require plan review before construction. These rules focus mainly on design, installation, spacing and fire protection, so do not assume they set an API 653 inspection schedule for existing tanks; confirm what applies to your tanks with the Storage Tank Division.

EGLE Part 5 rules and Pollution Incident Prevention Plans

The Michigan Department of Environment, Great Lakes, and Energy (EGLE) administers the Part 5 rules on spillage of oil and polluting materials. Facilities that store oil or other polluting materials above the rules' threshold management quantities, and from which a release could reach surface water or groundwater, must provide secondary containment and prepare a Pollution Incident Prevention Plan (PIPP). A PIPP is a state plan in its own right, but many facilities coordinate it with their SPCC plan, and tank inspection records support both.

Pipeline safety: PHMSA and the MPSC

The Michigan Public Service Commission inspects intrastate natural gas pipelines under PHMSA certification, but its pipeline-safety programme does not cover hazardous-liquid pipelines, so PHMSA enforces hazardous-liquid pipeline safety in Michigan directly. The MPSC does hold siting authority for liquid pipelines. Under 49 CFR 195.432, steel breakout tanks on regulated hazardous-liquid pipelines operating at atmospheric or low pressure must be inspected in accordance with API 653, excluding the code's alternative risk-based internal interval, and pressurised breakout tanks follow API 510. The federal rule incorporates an older edition of API 653, so operators need procedures that reconcile it with the current edition.

EPA SPCC and MIOSHA process safety

Facilities subject to EPA's SPCC rule (40 CFR Part 112) must test or inspect each aboveground oil container for integrity on a regular schedule and after material repairs, following industry standards: API 653 for field-erected tanks and STI SP001 for shop-built tanks. For most Michigan terminals and bulk plants, this is the rule that makes API 653 effectively mandatory. Michigan operates a State Plan through MIOSHA, which enforces process safety management, including the mechanical-integrity element mirrored from 29 CFR 1910.119(j), at the refinery and covered chemical processes.

Radiography in Michigan

Michigan is not an NRC Agreement State; the NRC's Region III office licenses radioactive materials, including industrial radiography sources, while the state handles X-ray equipment and certain other materials. Repair-weld radiography on Michigan tanks is performed only by crews holding the appropriate licence for work in Michigan; confirm current licensing authority before planning RT.

NDE methods for API 653 work in Michigan

Direct answer: Michigan tank work relies on floor MFL with UT prove-up, shell and annular-plate UT with cold-weather procedures, corrosion mapping of shell courses and nozzles, visual examination of roofs, seals and foundations after winter, MT, PT and vacuum-box testing after repairs, PAUT or RT on new welds, and settlement surveys on riverfront fill.

Procedures are reviewed by an ASNT NDT Level III and technicians are certified to an SNT-TC-1A written practice. MFL screens the floor quickly, and every reportable indication is proved up with UT so the inspector evaluates measured remaining thickness. For method trade-offs see MFL versus UT for tank floors, and for scope detail see aboveground storage tank inspection.

How Atlantis supports your Authorized Inspector

Direct answer: Atlantis performs the NDE your API 653 inspector's plan calls for, checks data quality before the crew leaves and delivers a digital report built for the inspector's evaluation and for your SPCC and PIPP records. We are not an Authorized Inspection Agency and we do not supply API-certified inspectors. Our job is the examinations and the data.

1. Scope from the inspector's plan: floor coverage, shell and annular-plate locations, roof and seal examinations, weld examinations and settlement points.
2. Procedure review by an ASNT NDT Level III for each tank's construction, coating, lining and service, including heated asphalt and ethanol tanks, and cold-weather UT where external work runs into winter.
3. Examinations by technicians certified to an SNT-TC-1A written practice: MFL and UT prove-up, shell and annular UT, corrosion mapping, visual, surface and volumetric methods.
4. Data QA on site: readings checked against calibration records and the previous inspection before demobilising, while access still exists.
5. Digital report in our reporting platform: floor maps, prove-up readings, shell readings by course and location, weld records, photographs, calibration data and technician certifications, using report templates matched to your inspector's file.
6. Inspector evaluation and sign-off: the inspector evaluates, decides on repairs and sets the next dates.
7. Reuse at the next interval: the same locations next time, tracked in our inspection-management ERP or a digital twin of the terminal.

We can calculate corrosion rates and remaining life from our thickness data for the inspector's review; the interval decision belongs to the inspector and the owner under API 653 and the federal and state rules that apply. Atlantis performs the NDE; your API 653 Authorized Inspector remains inspector of record and signs the inspection report. For an owner with terminals across the Lower Peninsula, one consistent NDE data set that any inspector on the roster can use keeps the programme coherent. Request an NDE scope for your inspector's plan, or see API 653 tank inspection support.

Planning around winter, shipping season and heating demand

Direct answer: Michigan's winter compresses internal tank inspections into the spring-to-autumn window, lake-supplied terminals plan around the Great Lakes shipping season, and heating-fuel demand limits which tanks can be emptied in the colder months. External UT can continue year-round with cold-weather procedures.

Winter. Sub-freezing temperatures, lake-effect snow and ice make roofs, stairs and wind girders hazardous and slow surface preparation, coating repair and MT/PT. Cold steel also affects UT readings and couplant behaviour, so winter external surveys use low-temperature couplants and temperature-corrected measurements. Internal inspections and repairs are normally scheduled from late spring to early autumn.

Shipping season. When the Soo Locks close for winter and lake shipping slows, terminals that rely on vessel or barge supply hold maximum inventory. Their tanks are easiest to release for inspection in spring and summer, once deliveries resume.

Heating-fuel demand. Distillate and propane demand peaks in winter, so terminals often take distillate tanks out of service in summer and gasoline tanks around grade changes. Grouping several tanks into one campaign lets the crew move from one released tank to the next.

Spring checks. After a hard winter, external visual examination of roofs, seals, drains and foundations gives the inspector an early view of freeze-thaw and snow-load damage before the main outage season. Book a scoping call with your outage plan.

API 653 inspection support across Michigan

Direct answer: Atlantis mobilises crews to tank sites throughout Michigan on a schedule agreed during scoping: Detroit and Downriver, the St. Clair River, Flint, Lansing, Grand Rapids, Kalamazoo, Saginaw, Bay City and Midland, Muskegon and the Lake Michigan shore, northern Michigan and the Upper Peninsula. The Detroit pages below cover tank, corrosion, piping, vessel and third-party inspection in more detail.

• Detroit and Downriver: tank inspection in Detroit and corrosion inspection in Detroit.
• Refinery and terminal piping and pressure equipment: piping inspection in Detroit and pressure vessel inspection in Detroit.
• Independent inspection support: third-party inspection in Detroit.
• Flint, Lansing, Grand Rapids, Saginaw, Bay City, Midland, Muskegon and the Upper Peninsula: served by mobilised crews; include the site address with your tank list.

The piping, manifolds and pressure vessels at the same sites follow their own codes; see our companion hubs for API 570 piping inspection in Michigan and API 510 pressure vessel inspection in Michigan, and the statewide NDT inspection services in Michigan page. Pipeline operators can also see pipeline inspection services.

What to send us for a quote

Direct answer: Send your tank list, the last API 653 reports, your inspector's plan, the cleaning and access status, and your dates. We return a scoped NDE quote within 24 hours.

1. Tank list and drawings: tank IDs, diameter, height, roof type, product, year built, plate thicknesses, bottom and lining history, cathodic protection, and whether the tank is a pipeline breakout tank or sits in a PSM-covered process.
2. Previous reports: external and internal API 653 reports, floor maps, shell readings and settlement surveys, so we repeat locations and corrosion rates stay valid.
3. The inspector's plan: examinations, coverage, acceptance references and report format, with the name of your Authorized Inspector or agency.
4. Access and cleaning: service status, cleaning contractor, gas-free and confined-space arrangements, and roof access.
5. Dates: SPCC, PHMSA and internal due dates, shipping-season and heating-demand constraints, and site orientation needs.

Get a quote within 24 hours.

Frequently asked questions: API 653 tank inspection in Michigan

Who can perform an API 653 inspection in Michigan?

An API 653 Authorized Inspector, working for the owner or an inspection agency, is responsible for the inspection and signs the report. Qualified NDE technicians collect the data. Atlantis performs that NDE with ASNT-certified technicians under Level III oversight and delivers the results to your inspector.

Does Michigan law require API 653 inspections?

There is no single Michigan rule that requires API 653 for every tank. In practice API 653 is required through EPA SPCC for field-erected oil tanks, PHMSA's rule for breakout tanks and MIOSHA PSM for covered processes. State fire-code and Part 5 rules add their own requirements. Confirm with LARA and EGLE.

What is a PIPP and does it cover tank inspection?

A Pollution Incident Prevention Plan is required under EGLE's Part 5 rules for facilities storing oil or polluting materials above threshold quantities where a release could reach water. It covers containment and spill prevention; API 653 inspection records support it but the plan is not an inspection code.

Who regulates pipeline breakout tanks in Michigan?

PHMSA, directly. The Michigan Public Service Commission inspects gas pipelines but not hazardous-liquid lines. Under 49 CFR 195.432, breakout tanks must be inspected per API 653 without the risk-based internal interval option.

How often does a terminal tank need an internal inspection?

Under API 653, a new tank's first internal is due within ten years, extendable through credited safeguards to twenty years, or thirty with a release prevention barrier. Later intervals follow measured floor corrosion within the same ceilings. The inspector and owner set the actual date.

Can you inspect tanks in a Michigan winter?

External shell UT, corrosion mapping and visual examination can continue in winter using cold-weather procedures and temperature-corrected readings. Internal inspections, floor scanning and repairs are normally planned for late spring to early autumn.

Is Atlantis an Authorized Inspector?

No. We are not an Authorized Inspection Agency and we do not supply API-certified inspectors. We perform and document the NDE; your inspector evaluates it and signs.

Can you inspect while the tank stays in service?

Yes for shell UT, corrosion mapping, external visual examination including roof and seal checks, and settlement readings. Floor scanning and internal weld examination need the tank emptied, cleaned and gas-free.

What certifications do your technicians hold?

Technicians are certified to an ASNT SNT-TC-1A written practice for each method, with procedures reviewed by an ASNT NDT Level III. Radiography is performed only by crews holding the appropriate licence for industrial radiography work in Michigan.

Do you perform RBI or fitness-for-service assessments?

No. Those are performed by the owner's engineers or specialist consultants. Atlantis supplies the floor, shell and weld data they rely on.

Do you offer API 653 certification training?

No. Atlantis provides ASNT SNT-TC-1A NDT training only, including NDT training in Michigan. For the API certification route, see our API inspector career guide.

How soon can a crew reach Detroit, Midland or Grand Rapids?

Crews are mobilised to your site on a schedule agreed during scoping, built around your outage window and seasonal constraints. Send tank details for a quote within 24 hours.

Plan your Michigan tank inspections

From a floor scan at a Detroit refinery tank to a shell survey at a Grand Rapids terminal or a spring check on a lake-port tank after a hard winter, start with your inspector's plan and your tank list. Send us your tank list, or see NDT consulting in Michigan for Level III procedure support.

More Atlantis NDT services in Michigan

• NDT training and certification in Michigan
• Level III consulting in Michigan
• NDT inspection services in Michigan
• API 510 pressure vessel inspection support in Michigan
• API 570 piping inspection support in Michigan
• NDT ERP software in Michigan
• Practical NDT simulator in Michigan

Part of the wider aboveground storage tank inspection service at Atlantis NDT.