ASME B30.2 Overhead Crane Inspection: The Five Classes, Intervals, and Records

ASME B30.2 defines five inspection classes for overhead and gantry cranes — initial, a functional test at the start of every shift, frequent visual checks at intervals set by service class, documented periodic inspections yearly (quarterly in severe service), and a catch-up inspection before an idle crane goes back to work. OSHA 1910.179 is the legal floor, and its text was adopted nearly verbatim from the 1967 edition of this same standard — so the current edition, B30.2-2022, is where a defensible crane inspection program actually lives.

What B30.2 covers, and the current edition

ASME B30.2 is the B30-series volume for top-running overhead and gantry cranes. It applies to the construction, installation, operation, inspection, and maintenance of hand-operated and power-driven cranes with a top-running single- or multiple-girder bridge and one or more top-running trolley hoists — plus cranes sharing those fundamentals: cantilever gantry, semi-gantry, and wall cranes.

The current edition is B30.2-2022, which supersedes the 2016 edition and took effect August 24, 2023. B30 volumes revise on roughly five-to-six-year cycles, so expect a successor toward the end of the decade. Two scope boundaries matter before the standard goes on a report: the hoist itself is covered by ASME B30.16, and underhung cranes and monorails belong to B30.17 — both covered below. The standard also requires following the inspection provisions in the crane and component manufacturers' manuals, not just the volume's own item lists.

The five inspection classes

Since the 2016 edition, B30.2 defines five types of inspection (older editions had three — the per-shift functional test and the idle-equipment tier were added).

The functional test inspection is the operator tier: a visual and audible operational examination covering the operational controls, the upper and lower limit devices, and the rope. Frequent inspection is a visual and audible examination of the crane by maintenance or inspection personnel. Periodic inspection is the complete examination — every frequent item plus the structural, mechanical, and electrical items detailed in the report section below — and its dated record of conditions found is mandatory, filed as the basis for a continuing evaluation of the crane.

One note on the table: the interval wording above carried into the current edition unchanged — Mazzella's clause-by-clause review of the 2022 revision records no changes to the inspection classes or their intervals (the inspection-chapter changes were limited to the load-test language covered below and a clarification that hoist limit device tests run under no-load conditions). As always with a paywalled standard, quote intervals in client contracts from a licensed copy of B30.2-2022 itself.

Service class sets your interval

The intervals mean nothing until the crane's service is classified, and B30.2 defines the terms tightly:

• Normal service — operating at less than 85% of rated load and not more than 10 lift cycles per hour, except isolated instances.
• Heavy service — operating at 85–100% of rated load, or more than 10 lift cycles per hour as a regular specified procedure.
• Severe service — normal or heavy service combined with abnormal operating conditions.

For an inspection company this classification is commercial, not academic: it decides whether a client owes one periodic visit a year or four. Record the classification on the report along with its basis — utilization, duty cycle, environment — so the interval you quoted survives an audit.

OSHA 1910.179 is the floor; B30.2 is the playbook

29 CFR 1910.179 is the enforceable regulation for overhead and gantry cranes in general industry, and it is frozen in time: 1910.179(b)(2) requires cranes constructed and installed on or after August 31, 1971 to meet the design specifications of ANSI B30.2.0-1967, incorporated by reference, and OSHA adopted that ANSI text nearly verbatim when the rule issued in 1971. Everything ASME has refined in the five decades since lives in B30.2's later editions, not in the CFR.

The floor runs the other way on one point, and it is worth knowing before you tell a client "ASME is stricter." In a 2009 interpretation letter to Konecranes, OSHA confirmed that rated load tests for new and altered cranes are mandatory under 1910.179(k) — the original ANSI advisory "should" language was revoked from the rule in 1984 — and stated flatly that it did not consider the load-test provisions of the then-current B30.2-2005 to be as protective as 1910.179(k), so an employer could not lean on the ANSI standard as a de minimis defense. The working posture for an inspection business: build the program on B30.2's structure for depth, and generate OSHA's certification records alongside it, because those are the documents a compliance officer asks for by name.

Load tests: 100% to 125%, with a written report

OSHA requires that all new and altered cranes be tested prior to initial use, with the test load not more than 125% of rated load unless otherwise recommended by the manufacturer, and the test report placed on file. Note that OSHA gives only the ceiling.

B30.2 supplies the floor and the procedure. The test load is not less than 100% and not more than 125% of the rated load of the crane or hoist, whichever governs, unless otherwise recommended by the manufacturer or a qualified person. The test sequence has four steps: hoist the test load and hold it on the brakes; run the trolley the full length of the bridge; run the bridge the full length of the runway in both directions with the trolley at each extreme end; then lower, stop, and hold the load with the brakes. The person conducting the test prepares a written report of the load sustained and the operations performed, and the report goes on file.

Two edition details worth flagging on proposals. In the 2016 edition B30.2's load-test language was advisory; the 2022 revision made it mandatory — per Mazzella's clause-by-clause review, "new cranes shall be load tested prior to initial use", with reinstalled, altered, repaired, and modified cranes tested unless a qualified person determines otherwise — which brings the standard in line with what OSHA already enforced. And replacing the load chain or rope specifically does not trigger a load test, but it does require an operational test before the crane returns to service.

Who inspects: designated person, qualified person

B30.2's inspection chapter puts every inspection in the hands of a designated person, with a second role behind them: any deficiency found must be examined by a qualified person, who determines whether it constitutes a hazard and what additional steps are needed before the crane runs again.

The standard defines a qualified person as someone who, by a recognized degree in an applicable field or a certificate of professional standing, or by extensive knowledge, training, and experience, has successfully demonstrated the ability to solve problems relating to the subject matter and work. The current volume no longer prints its own definition of designated person — the 2016 revision deleted it from the definitions section — but the long-standing B30-series meaning, from earlier editions of this volume, is a person selected or assigned by the employer or the employer's representative as competent to perform specific duties. For a third-party inspection company the usual arrangement is: your field technician is the designated person, and your senior inspector or engineer is the qualified person who signs the deficiency determinations.

CMAA classes, and where B30.16 and B30.17 take over

CMAA — the Crane Manufacturers Association of America — classifies cranes into six service classes by load spectrum and lift cycles:

CMAA Spec 70 covers the design of top-running multiple-girder cranes, Spec 74 covers single-girder cranes, and Spec 78 is the association's guideline volume for professional inspection, maintenance, and repair services — CMAA-based tables map class and shift usage to suggested inspection frequencies, and they are useful planning input. But CMAA is a trade association: when you cite an ASME interval on a report, B30.2's normal, heavy, and severe service language governs, and the two vocabularies do not map one-to-one. You can see the difference in practice: Mazzella's blended ASME/CMAA frequencies guide suggests semi-monthly-to-monthly frequent inspections for normal service and semi-annual-to-annual periodic inspections for heavy service — both tighter than B30.2's own monthly and yearly floors. Quoting the stricter blended guidance is a defensible service recommendation; just don't present it as the standard's text.

The volume boundaries matter just as much. The hoist itself — hand-chain, electric, or air-powered, chain or wire rope — is ASME B30.16 (current edition B30.16-2022). Underhung cranes, top-running cranes with underhung trolleys, and monorails are ASME B30.17, current edition B30.17-2026; the old B30.11 monorail volume was consolidated into B30.17 in 2015 and formally withdrawn in January 2018. A plant walkthrough almost always yields a mixed fleet, so map each asset to its volume in your register. A report that cites B30.2 for an underhung crane reads as a template job to anyone who knows the series.

What a B30.2-credible periodic report should contain

If you inspect cranes for customers, the periodic report is the product. A report that stands up next to the standard has three layers.

Identity and classification. Crane identifier and location, configuration and rated capacity, the B30.2 service classification with the utilization basis behind it, and the CMAA class if known.

Item-by-item findings, covering at minimum:

• Structure — bridge girders, end trucks, trolley frame, and footwalks checked for deformed, cracked, or corroded members; loose or missing bolts, nuts, pins, and rivets on girder connections and end ties
• Mechanical — sheaves and drums for cracks, groove wear, and rope imprinting; pins, bearings, wheels, shafts, gears, rollers, locking and clamping devices, bumpers, and stops; drive chains and sprockets against manufacturer stretch limits; brakes on hoist, trolley, and bridge for lining wear, adjustment, and holding ability
• Hooks per ASME B30.10 — throat spread, twist, cracks, wear, latch function — with the hook identifier recorded
• Electrical — controllers, master switches, contactors, limit switches, and pendant stations for deterioration and correct function; power plant operation
• Limit and travel devices trip-tested under no load by inching the empty block or crane into them at low speed
• Wire rope — full-length inspection for broken wires, diameter reduction, corrosion, kinking, crushing, and end-connection condition, with its own dated certification record; reeving verified against the manufacturer's design
• Wind speed indicators on outdoor cranes; warning devices and safety labels for operation and legibility; load block and hook attachment

Disposition. Conditions found, the qualified person's hazard determination for each deficiency, corrective actions, and return-to-service status — dated and signed by the inspector. Alongside the periodic report, generate OSHA's separate monthly certification records for hooks, hoist chains, and running ropes (date, signature, identifier), so the client's file answers 1910.179 by name as well as B30.2.

Our free crane inspection log covers the same three layers — daily/shift checks, a monthly inspection sheet, and an annual examination report you can file as your periodic record.

Where Core fits

For an inspection company, B30.2 is a scheduling and documentation problem multiplied across every client site: mixed fleets of B30.2, B30.16, and B30.17 assets, periodic cadences that move with service class, hook and rope certification records on their own monthly clocks, and a qualified-person sign-off chain to evidence. Core tracks due dates per asset against the right volume, enforces inspector competency at scheduling, batch-inspects a full crane bay in one visit, and gives every client a portal with their own equipment register and inspection history. See it on your own workflow.

Sources

• OSHA 29 CFR 1910.179 — Overhead and gantry cranes
• OSHA interpretation letter to Konecranes, August 28, 2009 — rated load tests
• ASME B30.2 — Overhead and Gantry Cranes (standard page)
• ANSI Webstore — ASME B30.2-2022
• Mazzella — ASME B30.2-2022 changes to the Overhead & Gantry Cranes standard
• Mazzella — Overhead crane inspection frequencies guide (PDF)
• CMAA specifications overview (MHI)
• Hoosier Crane — CMAA crane classifications explained
• CraneTech — Overhead crane inspection frequency explained