New Technology to Recycle and Rebuild Worn Polyurethane Pipeline Pigs

2000 ◽  
Author(s):  
Graham D. Bruce
Keyword(s):  
High Performance ◽  
Mechanical Characteristics ◽  
New Technology ◽  
Cost Savings ◽  
Process Technology ◽  
Significant Cost ◽  
Oil Pipeline ◽  
Successful Program ◽  
Thermoset Polymer

SUNcast Polyurethanes Inc. has developed a proprietary process technology that makes it possible to rebuild worn Polyurethane (PU) discs, cups and solid cast pipeline pigs. The technology creates a completely secure bond between the virgin and cured cast elastomer PU enabling rebuilt parts to perform “as new”. This paper addresses the mechanical characteristics of the bond possible with this technology and offers the results of a case study on a successful program to rebuild over fifty 24″ solid cast pigs for a crude oil pipeline. Cast elastomer PU is an expensive thermoset polymer which has not been readily recyclable. SUNcast’s technology offers pipeline operators, contractors and inspection companies an opportunity to recycle what is now waste back into high performance pigging products at significant cost savings.

Progressive Collapse Approach Compared to the Traditional Temperature Screening on Structural Assessment of Offshore Structures Against Fire

2016 ◽  
Author(s):  
Paula T. Nascimento ◽  
Marco A. P. Rosas ◽  
Leonardo Brandão ◽  
Fernando Castanheira
Keyword(s):  
Traditional Approach ◽  
Progressive Collapse ◽  
Screening Method ◽  
Substantial Reduction ◽  
Cost Savings ◽  
Offshore Structures ◽  
Significant Cost ◽  
Fire Scenarios

The present study compares the progressive collapse approach with the traditional temperature screening method on determination of PFP requirements at topside offshore structures. The advantage to evaluate the consequences of fire scenarios on the global integrity and stability of topside modules can be revealed by a substantial reduction of the required amount of PFP, and consequently significant cost savings for operators, when compared to the traditional approach. In the case study presented in this paper, there is a reduction of 79% in PFP allocation.

Optimal skyline corridor spacing for partial cutting in second-growth stands of coastal British Columbia

1996 ◽  
Vol 26 (3) ◽  
pp. 368-375
Author(s):  
Andrew F. Howard ◽  
Dag Rutherford ◽  
G. Glen Young
Keyword(s):  
British Columbia ◽  
Cost Savings ◽  
Significant Cost ◽  
Partial Cutting ◽  
Mathematical Basis ◽  
Optimal Distance ◽  
Second Growth ◽  
Optimal Spacing ◽  
Coastal British Columbia

This paper presents the findings of a study on the economically optimal spacing of skyline corridors in partial cuts in second-growth stands of British Columbia. The mathematical basis for optimal spacing of corridors is presented for rectangular settings when trees are felled in a herring-bone pattern to facilitate yarding. The model is used in a case study where optimal spacing is compared with actual spacing for two yarding systems observed in the field. The results indicate that significant cost savings are possible from spacing skyline corridors at the optimal distance compared with conventional spacing used by the logging contractors.

Analysis and Cost Estimation of a Total Site Using R-Curve

2009 ◽  
Author(s):  
Sh. Karimkashi ◽  
M. Amidpour
Keyword(s):  
Cost Estimation ◽  
Cost Savings ◽  
Analysis Tool ◽  
Significant Cost ◽  
R Ratio ◽  
Utility System ◽  
Graphical Tool ◽  
A Site ◽  
The Cost

In large processing sites the cost of fuel and power can be very significant and better management of the utility system can lead to significant cost savings. The R-curve is an analysis tool that provides guidelines for the cogeneration efficiency for a given site power-to-heat ratio demand of an ideal utility system. In this paper, the actual R-curve is combined with another graphical tool, representing the cost of cogeneration potential of a site. In fact in each case, actual R-curve is constructed and then another curve of ‘R-ratio vs. TAC’ is constructed to demonstrate the cost of each point of the R-Curve. Finally showing the results obtained for a case study, it is suggested to change sizes of the turbines in the utility system to improve the R-curve and also decrease the TAC for the same R-ratios. These changes are almost dependent to the case being studied.

scholarly journals Glass As A Sustainable Material To Design A Modern Office Building In Seismic Area, A Case of : Banda Aceh, Indonesia

Elkawnie ◽  
2016 ◽  
Vol 2 (2) ◽  
pp. 153
Author(s):  
Zia Faizurrahmany El Faridy
Keyword(s):  
High Performance ◽  
Large Scale ◽  
New Technology ◽  
Cost Savings ◽  
Building Design ◽  
Office Buildings ◽  
Cavity Wall ◽  
Cost Comparison ◽  
Glass Technology ◽  
Aceh Province

Glass as a material in building facades is rarely applied in a large scale, especially in design of office buildings, within Aceh province. Since Aceh is located in the area with dynamic earthquake activities, building design in this area required higher degree of concern in relation to better refrain from earthquake movements. Nowadays, glass technology that could withstand the seismic effects while sustaining seismic loads is available. To bring this new technology into design of office buildings in Aceh, the paper aims to measure the suitability and level of acceptance of the technology among Acehnese people by conducting some methods of cost comparison and cost savings. In this regard, a comparison in dead loads of a sample building with conventional cavity walls against that of high performance glazing system in a façade of the building was performed. The results indicated that the cost for glass technology are twice higher compared with cavity wall. But in the dead loads part, the glass material are 13.8 times more lighter than cavity wall

scholarly journals Improving the Wear Resistance and Bending Strength of Knives Used in Centrifugal Beet Cutters

2019 ◽  
Vol 13 (4) ◽  
pp. 58-64
Author(s):  
F. Ya. Rudik ◽  
S. A. Bredikhin
Keyword(s):  
Wear Resistance ◽  
Sugar Beet ◽  
High Performance ◽  
Mechanical Characteristics ◽  
Bending Strength ◽  
New Technology ◽  
Operating Conditions ◽  
Resource Saving ◽  
Special Equipment ◽  
Physical And Mechanical Characteristics

The efficiency of sugar production depends largely on the state of beet chips obtained from a centrifugal sugar beet cutter. It is shown that a one-shift operation of defective knives may result in a loss of up to 28-30 percent of sucrose. (Research purpose) To establish quality indicators of beet chips obtained from a centrifugal beet cutter, to improve a design and production technology of knives with increased physical and mechanical characteristics. (Materials and methods) The authors identified the reasons leading to the deterioration of the knife parameters and ensuring the quality of sugar beet cutting. To increase the indicators of wear resistance and bending strength of the cutting edges, the knife design was modified and a new technology of knife manufacturing was offered. The authors theoretically and experimentally proved the feasibility of replacing the manufacturing technology of the cutting edges of knives - from cutting to plastic deformation in die tooling. (Results and discussion) The authors have determined the mechanism and consequences of the wear and breakage of cutting points and the deformation and breakage of cutting edges of sugar beet knives. The technology of edge die stamping with special equipment was offered. The design of tooling for die stamping and machining of knife’s cutting edges was developed and experimentally tested in production conditions. (Conclusions) The authors offered the methods of strengthening cutting edges of knives with die casting, as well as offered solutions to the design problems of knife manufacturing using special high-performance and resource-saving equipment. The main physical and mechanical characteristics of sugar beet knives manufactured according to conventional and improved technologies have been experimentally determined and tested under operating conditions. The authors show the advantages of the cutting edges of sugar beet knives manufactured according to the improved technology; the study has proved an increase in microhardness by 14 percent and an increase in bending strength by 30 percent.

scholarly journals The limits of semiconductor technology and oncoming challenges in computer micro architectures and architectures

2004 ◽  
Vol 17 (3) ◽  
pp. 285-312
Author(s):  
Mile Stojcev ◽  
Teufik Tokic ◽  
Ivan Milentijevic
Keyword(s):  
Integrated Circuit ◽  
High Performance ◽  
New Technology ◽  
Process Technology ◽  
History Of ◽  
And Performance ◽  
Thread Level Speculation ◽  
Exponential Rates ◽  
Architecture And Design ◽  
Integrated Circuit Industry

In the last three decades the world of computers and especially that of microprocessors has been advanced at exponential rates in both productivity and performance. The integrated circuit industry has followed a steady path of constantly shrinking devices geometries and increased functionality that larger chips provide. The technology that enabled this exponential growth is a combination of advancements in process technology, micro architecture architecture and design and development tools. Together, these performances and functionality improvements have resulted in a history of new technology generations every two to three years, commonly referred to as-Moore Law. Each new generation has approximately doubled logic circuit density and increased performance by about 40%. This paper overviews some of the micro architectural techniques that are typical for contemporary high-performance microprocessors. The techniques are classified into those that increase the concurrency in instruction processing, while maintaining the appearance of sequential processing (pipelining, super-scalar execution out-of-order execution, etc), and those that exploit program behavior (memories hierarchies, branch predictors, trace caches, etc). In addition the paper also discusses micro architectural techniques likely to be used in the near future such as micro architectures with multiple sequencers and thread-level speculation, and micro architectural techniques intended for minimization of power consumption.

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