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On-the-job training
APP, 800-14005
Open circuits under load, 45-325(16)
Open fat kettles, food processing eqiupment, 806-42516; 806-42554
Open fires, in longshore, 56-60047
Open flames, dip tanks, 835-12040
Open pits, guarding, 24-21513
Open-sided floors, 800-26010
agriculture, 307-25015
Open-sided surfaces, guarding, construction, 155-505(6)
Open-surface tanks, dip tanks, 835-11010
Open tanks, hot or corrosive liquids, 301-195
Open web steel joists, construction, 155-709
Openers, 301-025
Opening drums & containers, hazardous waste operations, 843-180
Operating
derricks, 24-24515
enclosed areas, 155-525(3)(a)
near power lines, 155-527(5), 155-525(3)(e)(f)
procedures, process safety management (PSM), 67-021
rope, in longshore, 56-60201
ski lift, 59-120
Operations, preparatory, in construction, 155-775
Operators
helicopter, 45-67521
longshore, machinery, 56-60006(1)
ski areas, 59-015, 59-090, 59-120
OPIM, (other potentially infectious materials), 823-100
Orchard ladders, in agriculture, 307-05505
Order pickers, fall proctection, 863-20025
OSHA forms (300, 300A, 301), 27, 27-01119
Other potentially infectious materials (OPIM), definition, 823-100
Out-of-order tags, 800-11045
Outdoor heat exposure, 62-095
Outlet devices, in agriculture, 307-36606
Outrigger scaffolds, 874-40028
Outside conductors and lighting, 155-447(3)
Outside servicing personnel, 45-17560
Ovens, 806-42570 through 42574
Over-crossing, definition, 860-300
Over exposure, radiation, 62-09004(14)
Over-the-counter chemicals, MSDS & label preparation, 839-100
wholesale products, 839-30010
Overboard discharges, in longshore, 56-60229(4)
Overcurrent protection
agriculture, 307-36615
electrical, 155-447(5), 800-28045
Overflow pipes
inspection, 835-11025
requirements, 835-12010
Overhead and gantry, 24-235
construction, 155-525(7)
Overhead chain drive, guards, agriculture, 307-28058
Overhead conveyors, construction, 155-770
Overhead deck splitter, shake & shingle industry, 78-70503(2)
Overhead folders, textiles, 301-185
Overhead guards, lift trucks
construction, 155-615(3)(e)
ski areas, 59-090(21)
Overhead hazards, in pulp & paper, 79-020(8)
Overhead hoists, construction, 155-540, 155-703(4)
Overhead lines
agriculture, 307-150
vehicles, 307-37615
working near, 307-37612
construction, 155-428(17)(18)
electrical workers, 45-385
telecommunications, 32-330
Overhead protection, 155-965
agriculture, tractors, 307-090, 155-965
construction, 155-655(5), 155-965(3)
Overhead rope drives, agriculture, 307-28058
Overhead supports, longshore, 56-60205
Oxygen deficiency, 62-100, 155-655(7)(a)(i)
Oxygen safety, diving operations, 37-570(9)
Oxygen systems, bulk, 24-32003