Removable, Extendible, and/or Hinged Personnel Work Platforms
Requirements for the design, inspection, and test of personnel work platforms are included below.
I
|
|
|
6.3.1. Removable, Extendible, and/or Hinged Personnel Work Platform Design Requirements:
|
I
|
|
|
6.3.1.1. Safety factors for the design of platforms shall be consistent with those of the overall structures on which they are permanently mounted. In no case shall the safety factors be less than that of the overall structure, the applicable national consensus standard AISC, the Aluminum Association, or a yield factor of safety of 2, whichever is greater.
|
C
|
|
|
6.3.1.2. Hinges, attaching points, and other high stress or abuse prone components and their interface hardware shall be designed with a yield factor of safety of at least 3. Yield strength shall be less than or equal to 85 percent of ultimate strength or the ultimate factor of safety shall be 5.
|
C
|
|
|
6.3.1.3. The greater of (1) a minimum of 60 pounds per square foot or (2) 300 pounds per occupant shall be used for the uniformly distributed live load.
|
C
|
|
|
6.3.1.4. A minimum of 2,000 pounds shall be used for concentrated loading (point loading).
|
C
|
|
|
6.3.1.5. Guardrail systems and toe boards shall be provided and designed in accordance with 29 CFR 1910.23, Guarding Floor and Wall Openings and Holes.
|
C
|
|
|
6.3.1.6. Personnel platforms shall have a means of positive mechanical restraint when in the open, raised, folded back, or use position to prevent unintentional movement. Bolting shall not be acceptable. Latches, levers, tethered pins shall be used.
|
C
|
|
|
6.3.1.7. Movable platform structures shall be grounded with the bonding conductor size in accordance with the NEC Article 250-102, Bonding Jumpers.
|
C
|
|
|
6.3.2. Removable, Extendible, and Hinged Personnel Work Platform Marking Requirements.
|
I
|
|
|
6.3.2.1. All platforms shall be clearly marked with two-inch letters minimum indicating maximum load capacity.
|
C
|
|
|
6.3.2.2. The following information shall be imprinted on a metal tag attached to the platform:
|
C
|
|
|
6.3.2.2.1. Maximum distributed load.
|
C
|
|
|
6.3.2.2.2. Maximum concentrated load (point load).
|
C
|
|
|
6.3.3. Removable, Extendible, and/or Hinged Personnel Work Platform Inspection and Test Requirements. At a minimum, the following tests shall be performed:
|
C
|
|
|
6.3.3.1. All new, repaired, or modified platforms shall be load tested to 125 percent of their rated capacity before initial use. After the proof load test, volumetric NDE testing shall be performed on all SPF components and welds in accordance with the PSWG and Range Safety approved NDE plan. For repaired or modified platforms, volumetric NDE testing of all repaired or modified SPF components and welds is required.
|
C
|
|
|
6.3.3.2. Visual inspection shall be performed annually on all hinges, attaching points, and other high stress or abuse prone components on all platforms.
|
C
|
|
|
6.3.4. Removable, Extendible, and/or Hinged Personnel Work Platform Data Requirements. Personnel work platform data shall be submitted in accordance with Attachment 1, A1.2.5.8 of this volume.
|
C
|
|
|
|
