We are 3P Safety Inspections, a third-party crane inspection company working all 50 states. Our inspectors hold NCCCO cards. We inspect to OSHA and the ASME B30 codes, and we do not sell or rent cranes — so our reports just give you the facts.
The Two Inspection Cycles
OSHA 1910.179(j) splits overhead-crane inspection into two cycles:
- Frequent — daily to monthly, by a competent person (1910.179(j)(2))
- Periodic — every 1 to 12 months, by a qualified person (1910.179(j)(3))
- Initial — before first use of a new or altered crane
- Special — after any event that could have damaged the crane
Inspection intervals, one page each: pre-shift · frequent · periodic · quarterly · semi-annual · annual · post-assembly.
Frequent Inspections — Daily to Monthly
The frequent check is a running look at the items that wear and fail first. Interval moves with service class — daily for a hard-run crane, monthly for a light one.
- Hoist brakes and control function
- Wire rope or load chain for wear and broken wires
- Hooks, latches, and the load block
- Air and hydraulic lines for leaks
- Upper-limit switch and safety devices
- Reeving and rope spooling
Periodic Inspections — 1 to 12 Months
The periodic check is the deeper, documented inspection a qualified person signs. Heavy service and harsh environments pull it toward the 1-month end. Light service allows the 12-month end. If the vocabulary starts to blur — frequent, periodic, annual — our guide to annual vs. frequent vs. periodic crane inspections sorts out which rulebook each term comes from.
- Runways, rails, splices, and end stops
- Bridge and trolley drive, gearing, and couplings
- End trucks, wheels, and bumpers
- Sheaves, drums, shafts, and bearings
- Structural members, welds, and bolted joints
- Brakes, controls, and electrical apparatus
- Load-rating and capacity markings
How CMAA Service Class Sets the Pace
The single biggest factor in frequency is service class — the duty rating that says how hard and how often the crane works. The CMAA classes run from light standby to round-the-clock severe:
- Class A — standby or infrequent use (powerhouses, infrequent maintenance)
- Class B — light service (light assembly, repair shops)
- Class C — moderate service (machine shops, paper-mill machine rooms)
- Class D — heavy service (foundries, fabricating, steel warehouses)
- Class E — severe service (high-volume handling, scrap yards)
- Class F — continuous severe (custom-built, round-the-clock critical duty)
The higher the class, the shorter the gap between checks. We help you set the interval to match the class.
Inspections Beyond the Calendar
Frequency is not only about the clock. Inspect again after:
- A modification or a load-bearing repair
- An overload or a two-blocking event
- A crash, a collision, or a dropped load
- A long idle period before the crane returns to use
- Any sign of a developing problem between scheduled checks
What You Get From Each Check
Every overhead inspection ends with a dated report: each finding tied to a photo and to the OSHA 1910.179 or ASME B30.2 reference, with a severity rating you can act on. The frequent checks keep the crane safe day to day. The periodic report is the record you file and hand an auditor. We help you build the schedule and keep both current through our overhead crane inspection services.
Crane Inspection Frequency at a Glance
| Inspection | How Often | Who Performs It | What It Covers | Record Kept? |
|---|---|---|---|---|
| Pre-shift / Daily | Before each shift or use | Competent person (often the operator) | Controls, brakes, wire rope, hooks, leaks, tires or tracks, safety devices | Good practice |
| Monthly | Every 30 days | Competent person | Wire rope along its length, hooks and latches, hoist brakes | Yes — signed and dated |
| Frequent | Daily to monthly, by service class | Competent person | Running gear and high-wear items per ASME B30 | Per your program |
| Annual / Periodic | Every 12 months | Qualified person | The full machine: structure, welds, sheaves, drums, hydraulics, controls | Yes — full written report |
| After an event | After a repair, modification, storm, or idle period | Qualified person | The affected systems, before the crane returns to service | Yes |
The Standards Behind These Checks
We tie each finding to the rule it checks against:
- OSHA 1926.1412 — cranes on construction sites
- OSHA 1910.179 and 1910.180 — cranes in plants
- ASME B30.5, B30.3, and B30.2 — mobile, tower, and overhead cranes
- ASME B30.9 through B30.26 — slings and rigging hardware
- ANSI A92 — aerial work platforms
- EM 385-1-1 — federal and military job sites
What You Get in Your Report
Here is what lands in your inbox:
- A spreadsheet you can load into your CMMS
- A signed record for your files
- A punch list of what to fix first
- A clear PDF report with photos
- Each finding tied to a photo and a rule
Why Owners Pick 3P Safety Inspections
We inspect cranes and nothing else. We show up when we say and write reports a foreman can read. We price the job up front, with no surprise fees.
Frequently Asked Questions
How often should an overhead crane be inspected?
Frequent checks daily to monthly by a competent person (1910.179(j)(2)), and periodic checks every 1 to 12 months by a qualified person (1910.179(j)(3)). Service class sets the exact interval — the harder the duty, the shorter the gap.
What is the difference between frequent and periodic inspection?
Frequent inspection is a running look at high-wear items — brakes, rope, hooks, controls. Periodic inspection is a deeper, documented examination of the structure, drive, and load path by a qualified person.
What is CMAA service class and how does it affect inspection?
Service class (CMAA Class A through F) rates how hard a crane works, from standby to continuous severe. The higher the class, the more frequent the inspections. A Class F mill crane checks far more often than a Class A standby crane.
How often does a bridge crane in a foundry need inspection?
A foundry crane is typically Class D, E, or F service, which pulls the frequent check toward daily and the periodic check toward the 1-to-3-month end. Heavy, hot, dirty duty shortens every interval.
Does an overhead crane need inspection after an overload?
Yes. Any overload, two-blocking, collision, or dropped load calls for a special inspection before the crane returns to service, on top of the scheduled checks.
Who can inspect an overhead crane?
A competent person handles the frequent checks. The periodic inspection must be done by a qualified person. Our inspectors are NCCCO-certified and meet the qualified-person bar.
What standards cover overhead crane inspection frequency?
OSHA 1910.179(j) sets the frequent and periodic cycles, and ASME B30.2 ties the intervals to service class. Both are named in our reports.
Do you inspect overhead cranes nationwide?
Yes. We inspect overhead, bridge, and gantry cranes in all 50 states, help you set the right interval for the service class, and keep both cycles documented.
Authoritative References
OSHA 1910.179 — Overhead & Gantry CranesThe official standard, straight from the source.Visit source about OSHA 1910.179 — Overhead & Gantry Cranes
ASME B30 — Safety Standard for Cranes & RiggingThe official standard, straight from the source.Visit source about ASME B30 — Safety Standard for Cranes & Rigging
NCCCO — Crane Operator & Inspector CertificationThe official standard, straight from the source.Visit source about NCCCO — Crane Operator & Inspector Certification