OSHA’s load test requirements apply to cranes, derricks, hoists, and specialized rigging before they enter service, after any repair or alteration that affects load-bearing capacity, and — in marine and longshoring work — on fixed multi-year cycles. Test loads run from 100 to 125 percent of rated capacity depending on the equipment and the regulation that governs it, and the test must be performed by a competent, qualified, or appointed person and documented in records the employer can produce on demand. Three regulatory frameworks carry the substance: 29 CFR 1910.179 for overhead and gantry cranes in general industry, 29 CFR 1926 Subpart CC for cranes and derricks in construction, and 29 CFR Part 1919 for shore-based and vessel-mounted cargo gear.
Which Rule Applies to Your Equipment
The first question is which body of rules governs the lift. 29 CFR 1910.179 covers overhead and gantry cranes in general industry, including semigantry, cantilever gantry, wall cranes, and storage bridge cranes.1eCFR. 29 CFR 1910.179 – Overhead and Gantry Cranes
29 CFR 1926 Subpart CC covers a much wider slate of power-operated lifting equipment used in construction: mobile cranes, tower cranes, crawler cranes, locomotive cranes, derricks, pedestal cranes, portal cranes, sideboom cranes, and overhead and gantry cranes when they show up on a construction site.2eCFR. 29 CFR Part 1926 Subpart CC – Cranes and Derricks in Construction The design, construction, and testing rules in 29 CFR 1926.1433 apply to any construction equipment with a manufacturer-rated hoisting or lifting capacity above 2,000 pounds.3eCFR. 29 CFR 1926.1433 – Design, Construction and Testing
Rigging accessories carry their own rule. Under 29 CFR 1926.251, custom-design grabs, hooks, clamps, and other specialized lifting accessories must be marked with their safe working load and proof-tested to 125 percent of that rated load before use.4Occupational Safety and Health Administration. 29 CFR 1926.251 – Rigging Equipment for Material Handling
Marine cargo gear sits under 29 CFR Part 1919, which governs shore-based material handling devices and vessel-mounted gear used in longshoring and marine terminal operations.
When a Load Test Is Required
Before Initial Use
Every new crane is tested before it lifts real work. Under 1910.179(k)(1), new and altered overhead and gantry cranes must be tested to confirm compliance with the standard, including operational tests of hoisting, lowering, trolley travel, bridge travel, and all limit switches and safety devices.5Occupational Safety and Health Administration. 29 CFR 1910.179 – Overhead and Gantry Cranes For construction derricks, new or reinstalled units must be load tested by a competent person before initial use.6Occupational Safety and Health Administration. 29 CFR 1926.1436 – Derricks The point is to catch manufacturing defects, installation errors, or assembly problems before the equipment handles a live load.
After Repairs, Modifications, or Alterations
Cranes that have been modified and re-rated must be checked thoroughly for the new rated load by a qualified engineer or the equipment manufacturer, then tested in accordance with the rated load test procedure.7Occupational Safety and Health Administration. Requirements for Rated Load Tests for New or Altered Cranes For derrick hoists that have had repairs, modifications, or additions affecting capacity or safe operation, a qualified person must evaluate whether a load test is needed.6Occupational Safety and Health Administration. 29 CFR 1926.1436 – Derricks
In marine and longshoring work, the trigger is worded differently but points to the same idea: after important alterations or renewals of the machinery and gear, and after repairs caused by failure of or damage to components beyond loose parts, a full test is required before the equipment returns to service.8Occupational Safety and Health Administration. 29 CFR 1919.14 – Initial Tests of Cargo Gear and Tests After Alterations, Renewals or Repairs Any repair or alteration that touches a load-bearing component means you test again before lifting.
Periodic Re-Testing in Marine Operations
The general industry standard under 1910.179 does not set a fixed periodic load test interval for overhead and gantry cranes, though frequent and periodic inspections are required in between. Marine work is different. Under 29 CFR 1919.71, shore-based cranes require a unit proof test before initial use and every four years thereafter. Uncertificated cranes already in use must be proof-tested at initial certification and every four years after that. Derricks, tested as a unit with their winches and accessory gear, follow a five-year cycle under 29 CFR 1919.15.9eCFR. 29 CFR Part 1919 – Gear Certification These cycles exist because age, fatigue, and continuous heavy use degrade capacity in ways visual inspection alone will miss.
Test Load Percentages
There is no single universal test load. The required percentage varies by equipment and by the regulation that applies:
- Overhead and gantry cranes in general industry: test loads must not exceed 125 percent of the rated load unless the manufacturer recommends a higher amount.1eCFR. 29 CFR 1910.179 – Overhead and Gantry Cranes
- New derrick hoists in construction: minimum 110 percent and maximum 125 percent of rated capacity, unless the manufacturer recommends otherwise. Manufacturer testing satisfies the requirement.6Occupational Safety and Health Administration. 29 CFR 1926.1436 – Derricks
- New or reinstalled derricks in construction: at least 100 percent and no more than 110 percent of rated capacity, unless the manufacturer or a qualified person recommends otherwise, but never less than the maximum anticipated load.6Occupational Safety and Health Administration. 29 CFR 1926.1436 – Derricks
- Shore-based cranes in marine and longshoring operations: the unit proof test applies a load 10 percent in excess of the manufacturer’s load ratings at maximum and minimum radii. Trolley-equipped cranes are tested at 25 percent in excess of the rated load.10eCFR. 29 CFR 1919.71 – Unit Proof Test and Examination of Cranes
- Custom lifting accessories in construction rigging: proof-tested to 125 percent of rated load before use.4Occupational Safety and Health Administration. 29 CFR 1926.251 – Rigging Equipment for Material Handling
One detail catches people off guard on shore-based crane tests: the weight of auxiliary handling devices like magnets, hooks, slings, and clamshell buckets counts as part of the load.10eCFR. 29 CFR 1919.71 – Unit Proof Test and Examination of Cranes Attach a heavy magnet and there is less headroom for added test weight before the ceiling is reached.
What the Test Actually Covers
A rated load test is not just a static hang. For overhead and gantry cranes, the operational test before initial use covers hoisting and lowering, trolley travel, bridge travel, and all limit switches, locking devices, and safety mechanisms.5Occupational Safety and Health Administration. 29 CFR 1910.179 – Overhead and Gantry Cranes Every movement function has to work correctly under load.
Hoist limit switches get their own procedure. Under 1910.179(k)(1)(ii), the trip setting is determined by running an empty hook at increasing speeds up to maximum speed. The actuating mechanism must be positioned so it trips the switch in time to prevent the hook or hook block from contacting any part of the trolley, under all conditions.5Occupational Safety and Health Administration. 29 CFR 1910.179 – Overhead and Gantry Cranes The empty hook matters: a failed limit switch during a full-speed test with load attached could cause exactly the kind of impact the switch is meant to prevent.
For shore-based cranes under Part 1919, a physical examination accompanies the unit proof load test. The examiner checks functional operating mechanisms for improper function and excessive wear, with particular attention to sheaves, pins, and drums. Loose gear like hooks, wire rope, and rope terminals gets inspected. Cracked or deformed hooks must be discarded rather than repaired. The crane structure and boom are examined for deformed, cracked, or excessively corroded members. Brake and clutch parts, linings, pawls, and ratchets are checked for wear, and air and hydraulic components — lines, tanks, valves, drains, pumps — are checked for deterioration and leakage.11Occupational Safety and Health Administration. 29 CFR 1919.71 – Unit Proof Test and Examination of Cranes
On construction cranes, the safety devices required under 29 CFR 1926.1415 must be in proper working order before operations begin: boom stops, jib stops, foot pedal brake locks, hydraulic outrigger jack holding devices, and horns. If a safety device stops working during operations, the operator must safely stop and remove the equipment from service until the device functions properly. No alternative measures are permitted.12Occupational Safety and Health Administration. 29 CFR 1926.1415 – Safety Devices
Who Is Authorized to Perform the Test
OSHA uses two terms for the people authorized to test and inspect, and they are not interchangeable. A “competent person” is someone who can identify existing and foreseeable hazards in working conditions and has the authority to take immediate corrective action. A “qualified person” holds a recognized degree, certificate, or professional standing, or has demonstrated through extensive knowledge, training, and experience the ability to solve problems in the relevant subject area.13Occupational Safety and Health Administration. 29 CFR 1926.32 – Definitions
The distinction plays out in practice. New or reinstalled derricks must be load tested by a competent person.6Occupational Safety and Health Administration. 29 CFR 1926.1436 – Derricks Hoists that have been repaired or modified must be evaluated by a qualified person to decide whether a load test is even needed. Under the general industry standard for overhead cranes, rated load tests are performed “by or under the direction of an appointed or authorized person.”7Occupational Safety and Health Administration. Requirements for Rated Load Tests for New or Altered Cranes Assigning the wrong level of person, or failing to document their qualifications, can invalidate the test from a compliance standpoint.
Documentation and Retention
The paperwork rules vary by standard, and the general industry rule is less prescriptive than most people expect. For overhead and gantry cranes under 1910.179, the regulation says only that test reports “shall be placed on file where readily available to appointed personnel.”1eCFR. 29 CFR 1910.179 – Overhead and Gantry Cranes The rule does not enumerate specific fields, but a report that omits the date, the test load, and who supervised the test will have limited value during an OSHA inspection.
Construction inspections under 29 CFR 1926.1412 are more explicit. Monthly inspection documentation must include the items checked, the results, the inspector’s name and signature, and the date, and must be kept for at least three months. Annual comprehensive inspection documentation carries the same content and a twelve-month retention floor. All documents must be available to anyone conducting inspections during the retention period.14eCFR. 29 CFR 1926.1412 – Inspections
For hook and hoist chain inspections under 1910.179, the monthly certification record must include the inspection date, the signature of the person who performed it, and the serial number or other identifier of the component inspected.5Occupational Safety and Health Administration. 29 CFR 1910.179 – Overhead and Gantry Cranes Marine and longshoring gear under Part 1919 carries its own certification records tied to the four-year and five-year proof test cycles, maintained by the certificating authority.
Missing or incomplete records are a common source of citations. Even where the equipment is in good mechanical condition, an employer who cannot produce documentation showing that inspections were conducted by a qualified individual can be cited for non-compliance.
Penalties for Non-Compliance
As of January 15, 2025, the maximum penalty for a serious violation is $16,550 per violation. Willful or repeated violations carry a maximum of $165,514 per violation.15Occupational Safety and Health Administration. OSHA Penalties These amounts are adjusted annually for inflation. Serious and other-than-serious violations fall under the same maximum penalty tier.
Beyond direct fines, crane violations can trigger project shutdowns, increased scrutiny during future inspections, and required corrective actions that delay operations. A single missed load test or a gap in inspection records can cascade into multiple citation items if the underlying documentation failure affected several pieces of equipment.