I D
× COMMENTARYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEENVIRONMENTAL MANAGEREQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More

Comment PDF

Standard ASME B16.5 Flanges: Bolt Tightening and Target Loads

By Walther Stikvoort |

Using the approach outlined here, piping engineers can select the most appropriate bolt-tightening technique based on pressure class and flange size, and calculate the required torque or tool pressure if hydraulic tensioning tools are used In the majority of industrial plants, flanged connections are used in metallic piping systems (Figure 1). The applied flanges comply with ASME B16.5 [1]. Achieving a proper preload in the bolts of a gasketed, bolted-flanged joint during joint assembly is considered crucial for its optimized performance. To realize this, various bolt-tightening techniques are available for the flange fitter. Applying appropriate tightening depends on bolt size and pressure class of the flange proper. In addition to other aspects with regard to bolted joints and their sealing performance, the appropriate and prudent choice must be made of the tightening tool and the bolt load that must be realized during assembly. This article is intended as a practical guideline for piping mechanical engineers and focuses in particular on two specific aspects, namely: A selection chart that provides a demarcation between various tightening methods of bolts in standard flange connections An algorithm that enables the engineer involved…
Related Content
Avoiding SIL Misconceptions
Engineers must refine their foundational understanding of process safety in order to avoid common misconceptions about safety instrumented systems, including…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Improving chemical production processes with IIoT and AI technologies
New filtration technology for highly corrosive media
PTA production: Lowering OPEX without compromising on quality
Sure that zero means zero in your zero-liquid discharge (ZLD) process?
How separation processes profit from Industrial Internet of Things (IIoT) solutions

View More

Live chat by BoldChat