Volume B30.6 includes provisions that apply to the construction, installation, operation, inspection, testing, and maintenance of guy, stiffleg, basket, breast, gin pole, Chicago boom, shearleg, and A-frame
derricks. These derricks, powered by winches through systems of wire rope reeving, are used for lifting, lowering, and horizontal movement of freely suspended unguided loads. Derricks are usually stationary mounted and may be temporarily or permanently installed. The provisions included in this Volume also apply to any variations of these types of derricks with the same fundamental characteristics, except those specified for floating derricks in ASME B30.8, Floating Cranes and Floating Derricks.
B30.6 卷包括适用于拉杆、硬腿、篮子、胸、杜松子酒杆、芝加哥动臂、剪腿和 A 型框架井架的建造、安装、操作、检查、测试和维护的规定。这些井架由绞车通过钢丝绳缫缫系统提供动力,用于提升、降低和水平移动自由悬挂的非导向负载。井架通常是固定安装的,可以临时或永久安装。本卷中包含的规定也适用于具有相同基本特征的这些类型井架的任何变体,但ASME B30.8,浮式起重机和浮动井架中规定的浮动井架除外。