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0 0 SAFE WORK PRACTICES FOR CONTRACTORS WORKING AT RETAIL PETROLEIJWCONVENIENCE FACILITIES 21 7.2 USE OF ANY MOBILE APPARATUS USED FOR WORKING AT HEIGHTS 7.2.1 Wheeled Scaffolds Scaffolds shall be erected by a competent person in accordance with OSHA requirements(29CFR 1926.450). Scaffolds may be used for high work and also for access to other high work area. All wheels shall be locked when wheeled scaffold towers are in use.No person is permitted to remain on any scaffold tower platform while the tower is being moved.The scaffold: • shall be constructed on level surface, • the height cannot exceed 3.5 times the minimum base dimension(short side), • it shall not be used when winds exceed 35 miles per hour(50 km per hour)or during other conditions that may cause it to become unstable,and • barricades shall be constructed five feet from the base of the scaffold. 7.2.2 Aerial Lift(Cherry Picker, Bucket Truck) Aerial lifts may be used for access to roofs and canopies.The aerial lift basket may only be lowered onto a roof when it is more than six feet from the edge.Body restraint harness shall be worn at all times while in an aerial lift basket.The use of an aerial lift shall meet the requirements of OSHA regulation(29 CFR 1926.453).The aerial lift shall be used on a surface that allows stability of the equipment in the raised position.It shall not be used when winds exceed 35 miles per hour(50 km per hour),and ban icad- ing shall be constructed around the work area.If outriggers are available on the equipment,they shall be deployed. 7.2.3 Scissor Lift Scissor lifts may be used for high work and access to other high work areas.If a scissors lift is used for access,a ladder shall also be present for emergency exit.The scissor lift shall be used on a surface that allows stability of the equipment in the raised posi- tion.It shall not be used when winds exceed 35 miles per hour(50 km per hour),and barricading shall be constructed around the work area,if stabilizers are available on the equipment,they shall be deployed. 7.3 INSPECTIONS FOR EQUIPMENT USED WHEN WORKING AT HEIGHTS 7.3.1 Ladders A competent person shall inspect each ladder for visible defects on a periodic basis and after any occurrence that may affect its safe use. This person shall be familiar with the hazards associated with ladder use and be authorized to take appropriate action necessary to eliminate any hazard. 7.3.1.1 Ladders with Defects: Portable or fixed ladders shall be taken out of service if they have structural defects.Exam- ples of structural defects include: • Broken or missing rungs,cleats,or steps • Broken or split rails • Missing or damaged non-slip feet • Missing load rating sticker • Corroded or damaged components • Other faulty or defective components 7.3.1.2 Removing Ladders from Service:To remove a ladder from service,one of the following shall be done: • Immediately tag the ladder with"Do Not Use"or similar language. • Mark the ladder in a manner that readily identifies it as defective. • Block the ladder(for example,with a plywood attachment that spans several rungs). 7.3.1.3 Ladder Repairs: Before the ladder is returned to use,it shall be repaired and restored to its original design specifica- tions. 7.3.2 Scaffolds Scaffolds and scaffold components shall be inspected for visual defects by a competent person before each work shift,and after any occurrence which may affect a scaffold's structural integrity.This inspection shall be documented.Scaffolding shall be tagged