Mechanical seals are the most common means of sealing industrial centrifugal pumps. There are a wide variety of seal options including the use of single or dual seal arrangements. While dual seals provide benefits in leakage containment and monitoring, single seals continue to be widely used due to their lower cost and simpler designs. Newer piping plans however offer options to increase leakag...

Birds frequently interact with people when they occur in coupled human-ecological or anthropogenic environments, which makes the protection of legally protected species a challenge. Flight initiation distances (FIDs) are often used to inform development of appropriate buffer distances required for human exclusion zones used to protect birds nesting in anthropogenic landscapes. Piping Plovers (C...

Complex piping systems with multiple side-branches in close proximity are very liable to flow-induced acoustic resonances. This is demonstrated by means of model tests of two piping systems, one with a single side-branch the second containing two side-branches. The general acoustic response of these two systems is studied as the flow velocity in the main pipe is increased. The influence of the ...

NOTICE: this is the author’s version of a work that was accepted for publication in International Journal of Pressure Vessels and Piping. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for pub...

In this paper I present new data from possessive phrases in Chol (Mayan) and discuss the problem they present for standard analyses of pied-piping (see Heck 2004 and references cited therein). I argue that a theory of pied-piping in which features of a wh-word “percolate” up to a higher maximal projection is unable to straightforwardly account for the ordering facts found in interrogative posse...

This paper discusses the accuracy of a finite element model of a coupled piping system subjected to earthquake loads, as well as the differences in seismic behavior between coupled and welded piping system models. The test setup of a Victaulic coupled piping system tested at Lehigh University was modeled and analyzed with finite element methods. Two models were developed: (1) a welded pipe mode...

Piping akibat erosi internal dapat menyebabkan kegagalan struktur pada bendungan urugan. Pembentukan piping yang dimulai bagian hilir kaki dipengaruhi oleh gradien kritis material (Ic) dan hidrolik keluaran (Ie). Nilai perbandingan kedua parameter tersebut apabila melampaui batas tertentu memicu terbentuknya piping. Selain itu, untuk mengurangi risiko maka debit rembesan diizinkan adalah tidak ...

In the process of piping development, sediment carried by seepage causes change porosity and then permeability coefficient. Therefore, belongs to muddy water (i.e., unstable seepage). Based on theory seepage, new control equation model is established. The generation mechanism development for white fine sand gravel are explored. advantages discussed. results show that not only simpler in form bu...