Scope: This standard provides the requirements pertaining to house falls. 

Special Requirements: Designated employees, inspect

1917.41(c) - Designated employees shall inspect chains, links, shackles, swivels, blocks and other loose gear used in house fall operations before each day's use. Defective gear shall not be used.

Scope: This standard provides the requirements for auxiliary gear. 

Special Requirements: Inspect/inspection, authorized representative, determine, qualified supervision, proof load, designated person, rated capacity, removal, manufacturer's recommended ratings, recommendations, safe working loads, test certificates, heat treatment certificates, designated areas, design safety factor, proof test, certified, accredited, references other standards

1917.42(a) - Routine inspection. [Reference paragraph (a)(1) - (3)].

• 1917.42(a)(1) - At the completion of each use, loose gear such as slings, chains, bridles, blocks and hooks shall be so placed as to avoid damage to the gear. Loose gear shall be inspected and any defects corrected before reuse.
• 1917.42(a)(2) - All loose gear shall be inspected by the employer or his authorized representative before each use and, when necessary, at intervals during its use, to ensure that it is safe. Any gear which is found upon such inspection to be visibly unsafe shall not be used until it is made safe.

1917.42(b) - Wire rope and wire rope slings.

• 1917.42(b)(1) - The employer shall ascertain and adhere to the manufacturer's recommended ratings for wire rope and wire rope slings and shall have such ratings available for inspection. When the manufacturer is unable to supply such ratings, the employer shall use the tables for wire rope and wire rope slings found in American National Safety Standard for Slings, ANSI B30.9-1971. A design safety factor of at least five shall be maintained for the common sizes of running wire used as falls, in purchases or in such uses as light load slings. Wire rope with a safety factor of less than five may be used only: [Reference paragraph (b)(1)(i) - (iii)].
• 1917.42(b)(4) - Where wire rope clips are used to form eyes, the employer shall adhere to the manufacturers' recommendations, which shall be made available for inspection. If “U” bolt clips are used and the manufacturers' recommendations are not available, Table C-1 shall be used to determine the number and spacing of the clips. “U” bolts shall be applied with the “U” section in contact with the dead end of the rope.

1917.42(c) - Natural fiber rope.

• 1917.42(c)(1) - The employer shall ascertain the manufacturers' ratings for the specific natural fiber rope used and have such ratings available for inspection. The manufacturers' ratings shall be adhered to and a minimum design safety factor of five maintained.

1917.42(d) - Synthetic rope.

• 1917.42(d)(1) - The employer shall adhere to the manufacturers' ratings and use recommendations for the specific synthetic fiber rope used and shall make such ratings available for inspection.

1917.42(e) - Removal of natural and synthetic rope from service. Natural and synthetic rope having any of the following defects shall be removed from service: [Reference paragraph (e)(1) - (7)].

1917.42(g) - Synthetic web slings.

• 1917.42(g)(1) - Slings and nets or other combinations of more than one piece of synthetic webbing assembled and used as a single unit (synthetic web slings) shall not be used to hoist loads in excess of the sling's rated capacity.
• 1917.42(g)(2) - Synthetic web slings shall be removed from service if they exhibit any of the following defects: [Reference paragraph (g)(2)(i) - (vi)].
• 1917.42(g)(3) - Defective synthetic web slings removed from service shall not be returned to service unless repaired by a sling manufacturer or similar entity. Each repaired sling shall be proof tested by the repairer to twice the slings' rated capacity prior to its return to service. The employer shall retain a certificate of the proof test and make it available for examination.
• 1917.42(g)(4) - Synthetic web slings provided by the employer shall only be used in accordance with the manufacturer's use recommendations, which shall be available.

1917.42(h) - Chains and chain slings used for hoisting.

• 1917.42(h)(1) - The employer shall adhere to the manufacturer's recommended ratings for safe working loads for the sizes of wrought iron and alloy steel chains and chain slings used and shall have such ratings available. When the manufacturer is unable to provide such ratings, the employer shall use the tables for chains and chain slings found in American National Safety Standard for Slings, ANSI B30.9-1971.
• 1917.42(h)(3)(i) - Sling chains, including end fastenings, shall be inspected for visible defects before each day's use and as often as necessary during use to ensure integrity of the sling.
• 1917.42(h)(3)(ii) - Thorough inspections of chains in use shall be made quarterly to detect wear, defective welds, deformation or increase in length or stretch. The month of inspection shall be indicated on each chain by color of paint on a link or by other equally effective means.
• 1917.42(h)(3)(iii) - Chains shall be removed from service when maximum allowable wear, as indicated in Table C-2, is reached at any point of link.
• 1917.42(h)(3)(iv) - Chain slings shall be removed from service when stretch has increased the length of a measured section by more than five percent; when a link is bent, twisted or otherwise damaged; or when a link has a raised scarf or defective weld.
• 1917.42(h)(3)(v) - Only designated persons shall inspect chains used for slinging and hoisting.
• 1917.42(h)(4) - Chains shall be repaired only under qualified supervision. Links or portions of chain defective under any of the criteria of paragraph (h)(3)(iii) of this section shall be replaced with properly dimensioned links or connections of material similar to those of the original chain. Before repaired chains are returned to service, they shall be tested to the proof load recommended by the manufacturer of the original chain. Tests shall be performed by the manufacturer or shall be certified by an agency accredited for the purpose under part 1919 - gear certifications, of this chapter. Test certificates shall be available for inspection.
• 1917.42(h)(5) - Wrought iron chains in constant use shall be annealed or normalized at intervals not exceeding six months. Heat treatment certificates shall be available for inspection. Alloy chains shall not be annealed.
• 1917.42(h)(8) - Chain slings shall bear identification of size, grade and rated capacity.

1917.42(i)(1) - If available, the manufacturer's recommended safe working loads for shackles shall not be exceeded. In the absence of manufacturer's recommendations, Table C-3 shall apply.

1917.42(j) - Hooks other than hand hooks.

• 1917.42(j)(1) - The manufacturers' recommended safe working loads for hooks shall not be exceeded. Hooks other than hand hooks shall be tested in accordance with § 1917.50(c)(6).

1917.42(k)(2) - Damaged pallets shall be stored in designated areas and identified.

Scope: This standard provides the requirements for PITs.

Special Requirements: Written approval, professional engineer, authorized, plates, tags, designed, decals, consulted, label, capacity, maintenance, testing laboratory, designated person, approved, references other standards

1917.43(b) - General. [Reference paragraph (b)(1) - (12)].

• 1917.43(b)(1) - After October 3, 1983, modifications, such as adding counterweights, that might affect the vehicle's capacity or safety shall not be performed without either the manufacturer's prior written approval or the written approval of a professional engineer experienced with the equipment who has consulted with the manufacturer, if available. Capacity, operation and maintenance instruction plates, tags or decals shall be changed to conform to the equipment as modified.
• 1917.43(b)(2) - Unauthorized personnel shall not ride on powered industrial trucks. A safe place to ride shall be provided when riding is authorized.

1917.43(c) - Maintenance. [Reference paragraph (c)(1) - (6)].

• 1917.43(c)(1) - Only designated persons shall perform maintenance and repair. 

1917.43(d) - Approved trucks. [Reference paragraph (d)(1) - (3)].

• 1917.43(d)(2) - Approved trucks acquired and used after February 15, 1972, shall bear a label or other identification indicating testing laboratory approval.

1917.43(e)(3) - Forks. Forks, fork extensions and other attachments shall be secured so that they cannot be accidentally dislodged, and shall be used only in accordance with the manufacturer's recommendations.

1917.43(e)(6) - Lifting of employees. Employees may be elevated by fork lift trucks only when a platform is secured to the lifting carriage or forks. The platform shall meet the following requirements: [Reference paragraph (e)(6)(i) - (vii)].

• 1917.43(e)(6)(i) - The platform shall have a railing complying with § 1917.112(c) - guarding of edges.
• 1917.43(e)(6)(ii) - The platform shall have toeboards complying with § 1917.112(d) - guarding of edges, if tools or other objects could fall on employees below.

1917.43(f) - Bulk cargo-moving vehicles. [Reference paragraph (f)(1) - (3)].

• 1917.43(f)(2) - Guards and their attachment points shall be so designed as to be able to withstand, without excessive deflection, a load applied horizontally at the operator's shoulder level equal to the drawbar pull of the machine.

Scope: This standard provides the general rules applicable to vehicles.

Special Requirements: Designated areas, signs, direct, posted, training, charts, manuals, maintenance, precautions, manufacturer instructions, demonstrated, procedures, signals, warn, written traffic instructions, warning mirror systems, references other standards

1917.44(a) - The requirements of this section apply to general vehicle use within marine terminals. Exception: The provisions of paragraphs (c) and (l) of this section do not apply when preempted by applicable regulations of the Department of Transportation.^[5]

1917.44(b) - Private vehicle parking in marine terminals shall be allowed only in designated areas.

1917.44(d) - The employer shall direct motor vehicle operators to comply with any posted speed limits and other traffic control signs or signals, and written traffic instructions.

1917.44(e) - Stop signs shall be posted at main entrances and exits of structures where visibility is impaired, and at blind intersections, unless direct traffic control or warning mirror systems or other systems of equivalent safety are provided.

1917.44(g) - The employer shall direct vehicle drivers to warn employees in traffic lanes of the vehicle's approach.

1917.44(h) - Signs indicating pedestrian traffic shall be clearly posted at vehicular check-in and check-out lines and similar locations where employees may be working.

1917.44(j)  - No unattended vehicle shall be left with its engine running unless secured against movement (see § 1917.43(b)(3) for powered industrial trucks).

1917.44(o) - Servicing multi-piece and single piece rim wheels. Servicing of multi-piece and single piece rim wheels is covered by § 1910.177 of this chapter. [See § 1917.1(a)(2)(xii)].

• 1917.44(o)(3) - Employee training.
  • 1917.44(o)(3)(i) - Only employees trained in the procedures required in paragraph (o)(4) of this section and who have demonstrated their ability to service multi-piece rim wheels shall be assigned such duties.
  • 1917.44(o)(3)(ii) - Employees assigned such duties shall have demonstrated their ability by the safe performance of the following tasks: [Reference paragraph (o)(3)(ii)(A) - (G)].
• 1917.44(o)(4) - Servicing procedures. The following procedures shall be followed: [Reference paragraph (o)(4)(i) - (ix)].
• 1917.44(o)(5) - Charts and manuals.
  • 1917.44(o)(5)(i) - The employer shall provide a chart containing as a minimum the instructions and information provided in the United States Department of Transportation, National Highway Traffic Safety Administration (NHTSA) publication "Safety Precautions for Mounting and Demounting Tube-Type Truck/Bus Tires" and "Multi-Piece Rim Wheel Matching Chart," and pertinent to the type(s) of multi-piece rim wheels being serviced. The chart shall be available in the terminal's service area.^[6]
  • 1917.44(o)(5)(ii) - A current rim manual containing the manufacturer's instructions for mounting, demounting, maintenance and safety precautions relating to the multi-piece rim wheels being serviced shall be available in the terminal's service area.
• 1917.44(o)(8)(i) - Only tools recommended in the rim manual for the type of wheel being serviced shall be used to service multi-piece rim wheels.
• 1917.44(o)(8)(ii) - Wheel components shall not be interchanged except as provided in the applicable chart or manual.

Scope: This standard provides the requirements for cranes and derricks. (See also 1917.50 - Certification of Marine Terminal Material Handling Devices)

Special Requirements: Ratings, rating chart, capacity ratings, precautions, warnings, warning signs, posted, rated loads, engineering design, analysis, approved, manufacturer's approval, certificating, competent, operating controls, marked, communication system, communications, designated person, inform, records, design specifications, instructions, instruct, inspections, signalman, operator, maintenance, safety factor, audible warning, monitor weather, report findings, fire extinguisher, procedures, references other standards

1917.45(b) - Ratings.

• 1917.45(b)(1) - Except for bridge cranes covered by paragraph (g) of this section, cranes and derricks having ratings that vary with boom length, radius (outreach) or other variables shall have a durable rating chart visible to the operator, covering the complete range of the manufacturer's (or design) capacity ratings. The rating chart shall include all operating radii (outreach) for all permissible boom lengths and jib lengths as applicable, with and without outriggers, and alternate ratings for optional equipment affecting such ratings. Precautions or warnings specified by the owner or manufacturer shall be included along with the chart.

• 1917.45(b)(2) - The manufacturer's (or design) rated loads for the conditions of use shall not be exceeded.

• 1917.45(b)(3) - Designated working loads shall not be increased beyond the manufacturer's ratings or original design limitations unless such increase receives the manufacturer's approval. When the manufacturer's services are not available or where the equipment is of foreign manufacture, engineering design analysis shall be performed or approved by a person accredited for certificating the equipment under part 1919 - gear certification, of this chapter. Engineering design analysis shall be performed by a registered professional engineer competent in the field of cranes and derricks. Any structural changes necessitated by the change in rating shall be carried out.

1917.45(c) - Radius indicator. When the rated load varies with the boom radius, the crane or derrick shall be fitted with a boom angle or radius indicator visible to the operator.

1917.45(f)(1)(i) - Crane and derrick operating controls shall be clearly marked, or a chart indicating their function shall be posted at the operator's position.

1917.45(f)(4)(ii) - If more than 20 feet (6.1 m) in height, vertical ladders shall comply with § 1917.118(d), (e)(1), (e)(2)(iii), and (e)(2)(iv) - fixed ladders

1917.45(f)(4)(iii) - Stairways on cranes shall be equipped with rigid handrails meeting the requirements of § 1917.112(e) - guarding of edges.

1917.45(f)(4)(iv) - If the top of a ladder or stairway or any position thereof is located where a moving part of a crane, such as a revolving house, could strike an employee ascending or descending the ladder or stairway, a prominent warning sign shall be posted at the foot of the ladder or stairway. A system of communication (such as a buzzer or bell) shall be established and maintained between the foot of the ladder or stairway and the operator's cab.

1917.45(f)(6) - Counterweights or ballast. Cranes shall be operated only with the specified type and amount of ballast or counterweights. Ballast or counterweight shall be located and secured only as provided in the manufacturer's or design specifications, which shall be available.

1917.45(f)(7) - Outriggers. Outriggers shall be used according to the manufacturers' specifications or design data, which shall be available. Floats, when used, shall be securely attached to the outriggers. Wood blocks or other support shall be of sufficient size to support the outrigger, free of defects that may affect safety and of sufficient width and length to prevent the crane from shifting or toppling under load.

1917.45(f)(9) - Electrical equipment shall be so located or enclosed that live parts will not be exposed to accidental contact. Designated persons may work on energized equipment only if necessary during inspection, maintenance, or repair.

1917.45(f)(10) - Fire extinguisher. [Reference paragraph (f)(10)(i) - (ii)].

1917.45(g)(2) - Rated load marking. The rated loads of bridge cranes shall be plainly marked on each side of the crane and in the cab. If there is more than one hoisting unit, each hoist shall have its rated load marked on it or on its load block. Marking shall be legible from the ground level.

1917.45(g)(3)(ii) - The wind indicating device shall provide a visible or audible warning to alert the operator of high wind conditions. That warning shall be transmitted whenever the following circumstances are present: [Reference paragraph (g)(3)(ii)(A) - (B)].

1917.45(g)(3)(iii) - Instructions. The employer shall post operating instructions for high wind conditions in the operator's cab of each crane. Operators shall be directed to comply with these instructions. The instructions shall include procedures for responding to high wind alerts and for any coordination necessary with other cranes.

1917.45(g)(5) - The employer shall monitor local weather conditions by subscribing to a weather service or using equally effective means.

1917.45(g)(9) - Warning devices. Rail-mounted cranes shall be equipped with an effective travel warning device which shall be used to warn employees who may be in the path of the moving crane.

1917.45(g)(10) - Communications. Means of communication shall be provided between the operator's cab and the base of the gantry of all rail-mounted cranes. This requirement may be met by telephone, radio, sound-signaling system or other effective methods, but not solely by hand-signaling.

1917.45(i)(1) - Use of cranes together. When two or more cranes hoist a load in unison, a designated person shall direct the operation and instruct personnel in positioning, rigging of the load and movements to be made.

1917.45(j) - Protection for employees being hoisted. [Reference paragraph (j)(1) - (10)].

• 1917.45(j)(1)(iii)(A) - Enclosed by a railing or other means providing protection equivalent to that described in § 1917.112(c) - guarding of edges. If equipped with open railings, the platform shall be fitted with toe boards;

• 1917.45(j)(1)(iii)(B) - Having a safety factor of four based on ultimate strength;

• 1917.45(j)(1)(iii)(C) - Bearing a plate or permanent marking indicating maximum load rating, which shall not be exceeded, and the weight of the platform itself;

• 1917.45(j)(4) - Platforms or devices used to hoist employees shall be inspected for defects before each day's use and shall be removed from service if defective.

• 1917.45(j)(5) - Employees being hoisted shall remain in continuous sight of and communication with the operator or signalman.

1917.45(k) - Routine inspection.

• 1917.45(k)(1) - Designated persons shall visually inspect each crane and derrick on each day of use for defects in functional operating components and shall report any defect found to the employer. The employer shall inform the operator of the findings.

• 1917.45(k)(2) - A designated person shall thoroughly inspect all functional components and accessible structural features of each crane or device at monthly intervals.

• 1917.45(k)(3) - Any defects found during such inspections which may create a safety hazard shall be corrected before further equipment use. Repairs shall be performed only by designated persons.

• 1917.45(k)(4) - A record of monthly inspections shall be maintained for six months in or on the crane or derrick or at the terminal.

Scope: This standard provides the requirements for load indicating devices.

Special Requirements: Recommended by manufacturer, marking, precautions, conversion chart, operator, determine/determination, certified, certification survey, operating instructions, rated load, references other standards

1917.46(a)(1)(iii) - The device shall permit the operator to determine, before making any lift, that the indicating or substitute system is operative. In the alternative, if a device is so mounted or attached to preclude such a determination, it may not be used unless it has been certified by the manufacturer to remain operable within the limits stated in paragraph (a)(1)(ii) of this section for a specific period of use. Checks for accuracy, using known values of load, shall be performed at the time of every certification survey (see § 1917.50 - certification of marine terminal material handling devices) and at such additional times as may be recommended by the manufacturer.

1917.46(a)(1)(v) - Marking shall be conspicuously placed giving: units of measure in pounds or both pounds and kilograms, capacity of the indicating system, accuracy of the indicating system, and operating instructions and precautions. In the case of systems utilizing indications other than actual weights, the marking shall include data on: the means of measurement, capacity of the system, accuracy of the system, and operating instructions and precautions. If the system used provides no readout, but is such as to automatically cease crane operation when the rated load limit under any specific condition of use is reached, marking shall be provided giving the make and model of the device installed, a description of what it does, how it is operated, and any necessary precautions regarding the system. All weight indications, other types of loading indications, and other data required shall be readily visible to the operator.

1917.46(a)(1)(vii) - When the device uses the radius as a factor in its use or in its operating indications, the indicated radius (which may be in feet and/or meters, or degrees of boom angle, depending on the system used) shall be a figure which is within the range of a figure no greater than 110 percent of the actual radius to a figure which is no less than 97 percent of the actual (true) radius. A conversion chart shall be provided whenever it is necessary to convert between degrees of radius and feet or meters.

1917.46(a)(1)(viii)(A) - Of trolley equipped bridge type or overhead type while handling intermodal containers known to be identified as empty, or loaded, and in either case in compliance with the provisions of § 1917.71 - terminals handling intermodal containers or roll-on roll-off operations, or while hoisting other lifts by means of a lifting beam supplied by the crane manufacturer for the purpose, and in all cases within the crane rating;

1917.46(a)(1)(viii)(D) - While the crane is used exclusively to handle cargo or equipment the total actual gross weight of which is known by means of marking of the unit or units hoisted, when such total actual gross weight never exceeds 11,200 lbs., and when 11,200 lbs., is less than the rated capacity of the crane at the maximum outreach that is possible under the conditions of use at the time.

Scope: This standard provides the requirements pertaining to winches.

Special Requirements: Identifiable, references other standards

1917.47(b) - Winches shall have clearly identifiable and readily accessible stop controls.

1917.47(e) - The provisions of § 1917.45(f)(11) - cranes and derricks, shall apply to winches.

Scope: This standard provides the requirements pertaining to conveyors.

Special Requirements: Locked out, tagged, testing, safe practices, maintenance, direct, designated persons, direct

1917.48(i) - Lockout/Tagout.

• 1917.48(i)(1) - Conveyors shall be stopped and their power sources locked out and tagged out during maintenance, repair, and servicing, unless power is necessary for testing.
• 1917.48(i)(2) - The starting device shall be locked out and tagged out in the stop position before an attempt is made to remove the cause of a jam or overload of the conveying medium, unless it is necessary to have the power on to remove the jam.

1917.48(j) - Safe practices.

• 1917.48(j)(1) - Only designated persons shall operate, repair or service powered conveyors.
• 1917.48(j)(2) - The employer shall direct employees to stay off operating conveyors.

Scope: This standard provides the requirements for spouts, chutes, hoppers, bins, and associated equipment.

Special Requirements: Inspected, communication, certification, locked out, tagged, designated person, notify, standby attendant, rescue, references other standards

1917.49(a) - Standing and running rigging and associated gear used as a permanent part of spouts, chutes or similar devices shall be inspected before each use and shall not be used if it has any functional defects. (See also § 1917.50(c)(2) for certification requirements.)

1917.49(b) - Direct communication shall be provided between the discharge or shipboard control end of loading spouts and chutes and the point in the terminal from which the flow of cargo is controlled.

1917.49(h)(2) - The power supply to the equipment carrying the cargo to the bin shall be turned off, locked out and tagged.

1917.49(i) - Before an employee enters a bin containing a bulk commodity such as coal or sugar, the employer shall ensure that: [Reference paragraph (i)(1) - (4)].

• 1917.49(i)(1) - Personnel controlling the flow of cargo into the bin have been notified of the entry;
• 1917.49(i)(2) - The power supply to the equipment carrying the cargo to the bin is turned off, locked out and tagged.
• 1917.49(i)(4) - A standby attendant equipped to perform a rescue is continuously stationed outside the bin until the employee has left the bin.

1917.49(k) - Chutes and hoppers shall be repaired only by designated persons.

1917.49(l)(1) - Before power shoveling operations begin, a designated person shall inspect the equipment to be used. The inspection shall include at least the eye bolts, wires, and sheaves.

1917.49(l)(3) - Before adjustments are made to a power shovel, wire, or associated equipment, the power supply to the shovel shall be turned off, locked out, and tagged, the belt stopped, and the hopper closed.

Scope: This standard provides the requirements certification of marine terminal material handling devices (See also mandatory appendix I - Special Cargo Gear and Container Spreader Test Requirements of this part).

Special Requirements: Certificated, accredited, documents, certification surveys, tested, certification procedures, manufacturer specifications, registered professional engineer, warranty, load test, designated, competent, inspection, marked, references other standards

1917.50(a) - The employer shall not use any material handling device listed in paragraph (c) of this section until he has ascertained that the device has been certificated, as evidenced by current and valid documents attesting to compliance with the requirements of paragraph (b) of this section.

• 1917.50(a)(1) - Certification surveys are to be completed for the conditions of use found at the time such surveys are completed, with the understanding that equipment owners/users can change the configurations of the equipment according to the manufacturer’s specifications without affecting the established certification status for the equipment.
• 1917.50(a)(2) - In cases of foreign manufactured cranes, there shall be an owner's warranty that the design is adequate for the intended use. The warranty shall be based on a thorough examination of the design specifications by a registered professional engineer familiar with the equipment.

1917.50(b) - The certifications required by this section shall be performed:

• 1917.50(b)(1) - In accordance with part 1919 - gear certifications, of this chapter, by persons then currently accredited by the Occupational Safety and Health Administration as provided in that part; or
• 1917.50(b)(2) - In accordance with standards established and enforced by the state in which the device is located or by a political subdivision thereof, which have been found by the Secretary to be compatible with part 1919 - gear certifications, of this chapter, by persons designated as competent to perform such certification by competent state authority and recognized as such by the Secretary.

1917.50(c) - The marine terminal material handling devices listed below shall be certificated in the following manner: [Reference paragraph (c)(1) - (6)].

1917.50(d) - Disassembly and reassembly of equipment does not require recertification of the equipment provided that the equipment is reassembled and used in a manner consistent with its certification.

1917.50(e) - For equipment certificated in accordance with paragraph (b)(2) of this section and transferred to a job site in another state, the current certification shall remain valid until the next inspection or examination becomes due.

1917.50(f) - Certification procedures shall not be construed as a substitute for, or cause for elimination of, normal operational inspection and maintenance routine throughout the year.

1917.50(g)(1) - Every unit of equipment requiring quadrennial certification shall have had such quadrennial certification within the previous 48 months. Equipment requiring annual certification shall have had such annual certification within the previous 12 months, except that no annual certification is required within 12 months after any required quadrennial certification. Annual examinations for certification may be accomplished up to one month early without effect on subsequent due dates.

1917.50(g)(2) - When certificated equipment is out of service for 6 months or more beyond the due date of a certification inspection, an examination equivalent to an initial certification, including unit proof load test, shall be performed before the equipment re-enters service.

1917.50(h) - Loose gear obtained after October 3, 1983 shall bear a legible mark indicating that it has been tested (see paragraph (c)(6) of this section). Single sheave blocks shall be marked with safe working loads and proof test loads. Marks relating to testing shall be identifiable on the related certificates, which shall be available.

1917.50(i) - Safe working load.

• 1917.50(i)(2) - All cargo handling gear provided by the employer with a safe working load greater than five short tons (10,000 lbs. or 4.54 metric tons) shall have its safe working load plainly marked on it.

1917.50(j) - Exceptions: The certification requirements of this section do not apply to the following equipment: [Reference paragraph (j)(1) - (3)].