Introduction
The Pipeline Toolbox is home to many tools and calculators. The PLTB User’s Guide presents information, guidelines and procedures for use during construction, operations and integrity tasks for field or office applications.
The general problem of a buried explosive detonating near a pipeline consists of two parts. The-first part, similitude theory; empirical analyses and test data were used to derive equations for estimating maximum ground displacement and particle velocity. The ground motions, provided the forcing function imparted to a buried pipeline.
The second part, similitude theory, conservation of mass and momentum, and approximate energy methods were used to derive functional relationships for the maximum pipe strains and stresses. Experimental data from more than 60 tests, primarily in model scale, were then used to develop equations for estimating maximum pipe stresses induced by point and parallel line explosive sources buried in a homogeneous soil ‘media. The large amount of data used, and the wide range of these data make the solutions applicable to most soil blasting situations near pipelines.
Module/Applications
- Angled Grid Explosive Charge
- Angled Line Explosive Charge
- Parallel Grid Explosive Charge
- Parallel Line Explosive Charge
- Single Point Explosive Charge
Additional Resources
Technical Toolboxes offers training webinars on these upgrades as well as RSTRENG© on-site training with certification. RSTRENG© training courses are also offered with defect analysis understanding from half-day, one day, and one 1/2 days depending on your needs. Review our website under The training section to sign up for these courses.
TIP: For support and other software questions, please check out the Support Tab on the Technical Toolboxes Website or our Support Desk Portal.
References
- SWRI – Pipeline Response to Buried Explosive Detonations – Volume I
- SWRI – Pipeline Response to Buried Explosive Detonations – Volume II
- PRCI – Pipeline Response to Blasting in Rock
FAQ
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What Are The Blasting Calculations Used Around Pipelines?
Many oil, and gas pipeline companies have minimum requirements regarding blasting around their pipeline facilities. A common blasting requirement is blasting within 200 feet or using vibratory equipment within 25 feet of a pipeline. Unfortunately, blasting take places at very close proximities due to construction and other real activities such sewer, water, cable, etc. that cause stresses to these pipelines. Check Out
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Estimating Equivalent Release Ratio?
Most chemical explosives have close to the same energy release per unit weight (We). If the explosive being used in a blasting situation is not known, the prediction equations can be used substituting a “typical” value for (We). Check Out