Repair of B31.1 Fiber Reinforced Polymer Piping System Using Carbon Fiber Reinforced Polymer

J. Hebeisen, T. Adams, Bruce F. Dubovecky, T. Jiménez
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Abstract

This paper describes the use of Carbon Fiber Reinforced Polymer (CFRP) for the repair of leaking Fiber Reinforced Polymer (FRP) pipe. The existing piping system, which is used for slurry transport, consisted of straight pipe, reducers, and elbows connected by bell and spigot joints. The piping system was evaluated for pressure, deadweight, and fluid thrust loads in accordance with B31.1 Power Piping Code and ASME BPVC Section III, Code Case N-155. The pipe leaks and joint repairs were in accordance with ASME PCC-2 and ASME BPVC, Section III, Code Case N-155. The CFRP repair was done with Aegion TYFO® Fibrwrap® carbon fiber reinforced fiber wrap (TYFO SCH-41-2X) saturated with epoxy. The repair uses the unidirectional carbon fiber installed in layers 90° to each layer. The circumferential layers are used for hoop pressure stress while the axial layers restrain axial pressure, deadweight, and fluid thrust loadings on the pipe.
碳纤维增强聚合物修复B31.1纤维增强聚合物管道系统
介绍了用碳纤维增强聚合物(CFRP)修复泄漏的FRP管道。现有的泥浆输送管道系统由直管、减速管和弯头组成,弯头由钟形接头和承插接头连接。根据B31.1《动力管道规范》和ASME BPVC章节III,规范案例N-155,对管道系统的压力、自重和流体推力载荷进行了评估。管道泄漏和接缝修复符合ASME PCC-2和ASME BPVC,章节III,案例代码N-155。CFRP修复是用Aegion TYFO®Fibrwrap®碳纤维增强纤维包膜(TYFO SCH-41-2X)饱和环氧树脂完成的。修复使用单向碳纤维,每层安装90°。周向层用于环向压力应力,而轴向层用于抑制轴向压力、自重和管道上的流体推力载荷。
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