News Article | May 6, 2017
MARICOPA, AZ, May 06, 2017-- Avinash Chandra Singhal is a celebrated Marquis Who's Who biographee. As in all Marquis Who's Who biographical volumes, individuals profiled are selected on the basis of current reference value. Factors such as position, noteworthy accomplishments, visibility, and prominence in a field are all taken into account during the selection process.Marquis Who's Who, the world's premier publisher of biographical profiles, is proud to name Dr. Singhal a Lifetime Achiever. An accomplished listee, Dr. Singhal celebrates many years' experience in his professional network, and has been noted for achievements, leadership qualities, and the credentials and successes he has accrued in his field.An esteemed and lauded figure in his field, Dr. Singhal most recently served as a professor at Arizona State University, a position he held for nearly 30 years. Other roles he held include Director of the Central Building Research Institute, Project Engineer at Weidlinger Associates, Inc., Manager of Technological Services for Engineers India Ltd., Manager of General Electric in Philadelphia, PA Assistant Program Manager of TRW Inc. in Redondo Beach, CA, Professor at Universite Laval, and Research Engineer at Kaman Corporation, Burlington, MA.Dr. Signhal conducted research in computer modeling, research in blast effects on structures, research in lifeline engineering, research in earthquake strengthening of deteriorated dams, and research in steel and concrete buildings, bridges, materials and non-linear finite element dynamics.Sr. Singhal contributed to the following works: "Dynamic Analysis of Dams with Nonlinear Slip Joints" (1998), "Performance of Retrofit Arch Dams" (1998), "Arizona Emergency Center Retrofit" (1998), "Simulation of Blast Pressures on Flexible Panels" (1994), "System Flexibility and Reflected Pressures" (1993) and "Wood Substitute: A National Priority, India."In addition to his status as a Lifetime Achiever, Dr. Singhal has previously received the First Prize in Bridge Building from the Institution of Structural Engineers, the Merit Award from the Institution of Engineers India, and the Henry Adams Research Medal from the Structural Engineers London.Moreover, Dr. Singhal has been recognized as a fellow of the Massachusetts Institute of Technology, American Society of Civil Engineers, Royal Astronomical Society and Kobe University, as well as a Dennison Scholar of The Institution of Civil Engineers. Furthermore, Dr. Singhal has received grants from the Department of Emergency and Military Affairs, the Office of Naval Research, the United States Department of the Interior, the U.S. Army Corps of Engineers, and the National Science Foundation. Dr. Singhal has also been a featured listee in Who's Who in Finance and Business, Who's Who in Finance and Industry, Who's Who in America, Who's Who in Science and Engineering, Who's Who in the West and Who's Who in the World.About Marquis Who's Who :Since 1899, when A. N. Marquis printed the First Edition of Who's Who in America , Marquis Who's Who has chronicled the lives of the most accomplished individuals and innovators from every significant field of endeavor, including politics, business, medicine, law, education, art, religion and entertainment. Today, Who's Who in America remains an essential biographical source for thousands of researchers, journalists, librarians and executive search firms around the world. Marquis publications may be visited at the official Marquis Who's Who website at www.marquiswhoswho.com
News Article | April 17, 2017
--Nifty hovers around 9150; Indiabulls Real, Hindalco most activeThe 30-share BSE Sensex was up 27.14 points at 29,488.59 and the 50-share NSE Nifty gained 6.10 points at 9,156.90.Adani Group stocks were on buyers' radar as Adani Ports, Adani Enterprises, Adani Power and Adani Transmission gained 2-4 percent.HDFC, Reliance Industries and ICICI Bank continued to support the market whereas ITC, HDFC Bank and Infosys were under pressure.The rupee pared initial losses to rebound smartly by 10 paise to 64.31 against the American currency in late morning trade on fresh bouts of dollar selling by banks and exporters amidst bearish US dollar overseas.The rupee opened almost flat at 64.42 as against last Thursday's closing level of 64.41 per dollar at the Interbank Foreign Exchange (Forex) Market here today.The domestic currency hovered in a range of 64.44 to 64.2875 during morning deals before quoting at 64.31 per dollar at 1025hrs.Meanwhile, the dollar index was trading down by 0.16 per cent at 100.39 against a basket of six currencies.A truncated week ended the Thursday session with a loss of 52.65 points or 0.57 percent at 9,150.80 on the NSE. The index broke its last three sessions' narrow range of 90 points (9,160 – 9,250) on the downside and closed below 20-DMA for the first time in the last three month.This observation indicates weakness in the short-term and prices may see a further correction towards 8,950 – 9,000 levels. Thus, 9,250 – 9,275 remains strong resistance zone.· Bank of Baroda: BUY| Target Rs 191| Stop Loss 163| Return 8 percent· Engineers India: BUY| Target Rs 172| Stop Loss Rs142| Return 9.5 percent· HDFC: BUY| Target Rs 1575| Stop Loss Rs 1445| Return 6.7 percent· Bharti Airtel: SELL| Target Rs 297| Stop Loss Rs 355| Return 12.7 percent· JSW Steel: SELL| Target Rs 175| Stop Loss Rs 205| Return 8 percent
Mandal A.,Visvesvaraya National Institute of Technology |
Chakravarthy C.P.,Engineers India Ltd |
Nanda A.,Engineers India Ltd |
Rath R.,Engineers India Ltd |
Usmani A.,Engineers India Ltd
International Journal of Geomechanics | Year: 2013
This paper presents a case study of an underground crude oil storage project. This storage site is researched with detailed field and laboratory investigations. The layout, cross section, and elevation of the caverns are analyzed and designed based on geologicaland geotechnical information obtained during these investigations. In this study, two-dimensional (2D) elastoplastic analysis is performed using the finiteelement code Phase 2D to study the rock mass behavior caused by staged excavation of the cavern (20 mwide × 30m high). The excavation of the cavern is simulated with different stages, i.e., excavation ofa pilot tunnel and subsequent side slashing followed by excavation for a pilot bench and subsequent side slashing with a total of three benches. Displacement values obtained analytically are compared with the observed displacement as the excavation progresses. Because the2DFEMcode is based on the plain strain concept, it could not take into account the effect of excavation in other directions that is very obvious at the intersection with tunnels and shafts. Therefore, these intersections were analyzed using a linear three-dimensional (3D) boundary element code, Examine3D. The stability analysis of rock wedges formedfrom various joint patterns is also studied using the UNWEDGE software based on block theory for each section of the cavern. © 2012 AmericanSociety of Civil Engineers.
Maiti S.,Indian Institute of Technology Roorkee |
Maiti S.,CSIR - Central Electrochemical Research Institute |
Mishra I.M.,Indian Institute of Technology Roorkee |
Bhattacharya S.D.,Indian Institute of Technology Roorkee |
And 2 more authors.
Colloids and Surfaces A: Physicochemical and Engineering Aspects | Year: 2011
The present study reports the removal of oil from oil-in-water (o/w) emulsion using a commercial resin which is a co-polymer of styrene and di-vinyl benzene. The stability of the 0.05% (w/w) o/w emulsion was investigated for different surfactant concentrations (0.25-4%), mixing time (5-60min) and stirring rate (500-2500rpm). The emulsion stability was estimated by measuring the relative volume of emulsion after 24h of the preparation of emulsion and the zeta potential. 1% of surfactant, 18min of mixing time and 2000rpm stirring were found to be the optimum conditions for the most stable emulsions. A series of experiments were performed to investigate the effect of such parameters as influent oil concentration (30-500mg/dm3), bed height (30-100mm) and flow rate (10-20dm3/h) on the oil removal efficiency of the resin. More than 89% of emulsified oil was removed under optimal operating conditions: 10dm3/h flow velocity, 75mm bed height, and 500mg/dm3 influent concentration of oil in the o/w emulsion. SEM and FTIR results indicate that the hydrogen bonding and hydrophilic interaction were the principal driving forces for the adhesion of oil onto the polymeric resin surfaces. The results indicated that the resin is very effective in removing oil from o/w emulsion. © 2011 Elsevier B.V.
Usmani A.,Engineers India Ltd. |
Ramana G.V.,Indian Institute of Technology Delhi |
Sharma K.G.,Indian Institute of Technology Delhi
Journal of Materials in Civil Engineering | Year: 2011
The capital city of India, Delhi, lies in the Indo-Gangetic alluvial trough. The soils of the Delhi region are known as "Delhi silt" because of the dominance of silt and, by and large, are nonplastic. The strength properties of Delhi silt, which contains either 60% or 20% sand, are experimentally evaluated with samples prepared using a slurry deposition technique in the laboratory and a stress-path triaxial system. Stress-strain-volume change and pore pressure behavior of these specimens under conventional triaxial compression (CTC) and the reduced triaxial extension (RTE) test for four values of confining pressures were measured, and strength properties are reported. These strength parameters as well as stress-strain volume change/pore pressure response were also compared with the results reported by other researchers; the observed behavior of Delhi silt is in good agreement with that of other silts reported in the literature. The study corroborated that the nature of Delhi silt is transitional, that is, it can be described by neither a sand nor a clay type of framework. All aspects of the mechanical behavior captured in this study (e.g., stress-strain volumetric response, pore pressure, and shear strength) were found to be affected by the amount of fines present in the sand and the loading conditions. © 2011 American Society of Civil Engineers.
Usmani A.,Engineers India Ltd |
Ramana G.V.,Indian Institute of Technology Delhi |
Sharma K.G.,Indian Institute of Technology Delhi
International Journal of Geomechanics | Year: 2012
This study investigates the drained stress-strain-volume change behavior of Delhi silt under triaxial compression and extension loading conditions using two different existing constitutive models, the hardening soil (HS) model and a hierarchical single surface (HISS) model. The HISS model is shown to be able to capture the stress-strain-volumetric response in both compression and extension loadings with higher accuracy as compared with the HS model. © 2012 American Society of Civil Engineers.
Sinha N.,Engineers India Ltd. |
Kishore R.,Engineers India Ltd.
ASME 2015 India International Oil and Gas Pipeline Conference, IOGPC 2015 | Year: 2015
With the ever-increasing demand of energy in the country, the Indian exploration and production is now compelled to move into deepwater frontiers. The country's energy reserve is getting exhausted with drying shallow water assets and the mainland is already overwhelmed with the pressure of sustaining the world's second largest population. Therefore, "the upstream oil and gas fraternity of the country" has to now enter "less explored" Indian deepwater block which has already started with the launch of the NELP block by the government. Although, the world has moved into deepwater long back, the Indian industry is still developing the ways and means to tackle the challenges involved in deep water. This paper presents the insights into design and installation of deepwater pipelines along with case study of Middle East to India Deepwater Pipeline (MEIDP) of M/s SAGE, which shall be laid at a maximum water depth of 3450 m. This paper broadly elucidates the challenges in designing the deepwater pipelines such as requirement of thick-walled line pipes to sustain collapse due to external over-pressure and tensile stresses generated due to installation forces, pipeline route selection and optimization, geo-hazard assessment & mitigation, design against fault line crossings/ seismic design, free span, repair systems, seabed intervention etc. It also covers the additional manufacturing & testing requirements including tighter tolerances for line pipes suitable for deepwater installations. It also highlights the deepwater installation capabilities of Pipe lay Barges for the laying of pipeline in the deepwater to ultra-deep waters along with new evolving testing and commissioning philosophies. This paper intends to bring awareness among the "oil and gas fraternity" regarding challenges involved in deep water pipelines with respect to design, installation etc. Copyright © 2015 by ASME.
Ghosal S.,Engineers India Ltd
NACE - International Corrosion Conference Series | Year: 2014
A major fire incident took place in the Reactor Effluent Air Cooler (REAC) of the Hydrocracker Unit (HCU). The air cooler was severely affected. Cracks were observed on the welding joints between the top plate and the tube sheet, between the bottom plate and the tube sheet of the floating header. The material of construction of the air cooler is Duplex Stainless Steel (DSS). Visual inspection was carried out on the failed portion and its surrounding area. A systematic metallurgical investigation including mechanical testing, macrostructural and microstructural analysis, Scanning Electron Microscopy (SEM), and Energy Dispersive x-ray Spectroscopy (EDS) was conducted on the failed air cooler. The failure at the weld root and at the fusion line is attributed to crevice and pitting corrosion in the presence of the process fluid containing Chlorides, Hydrogen Chloride (HCl) and Ammonium Chloride (NH4Cl). The remaining portion of the weld exhibited characteristics of brittle failure. The failure is attributed to a combination of ductile fracture at the weld root and brittle fracture in the remaining portion of the weld caused by the very high pressure process fluid containing Chlorides, HCl and NH4Cl. © 2014 by NACE International.
Usmani A.,Engineers India Ltd
Electronic Journal of Geotechnical Engineering | Year: 2013
Buffer storage of crude oil in large underground unlined rock caverns is one of the economical alternatives to ensure energy security of import dependent countries. Principle of storage essentially employs ground water pressure for containing the product within an unlined rock cavern. Initial site investigation campaign carried out involving geological, geophysical, geo-technical and hydro-geological investigations, establishes competency of rock formations in conjunction with ground water conditions for construction of unlined rock caverns. In such projects, engineering geology forms an important aspect not only during the initial feasibility stage of the project, but also in subsequent execution phase, wherein unlined rock caverns are built by conventional drill and blast technique. Design of underground structures exhibit lot of uncertainties in their basic approach and require an active and dynamic design intervention during construction progress. In this context predictive geological model is developed based on initial investigation results, which is continuously updated as the excavation progresses through stages of heading and benches. As part of this modeling exercise, critical segments of the caverns are identified as geological hotspot which undergoes additional stability analysis before excavation in order to take necessary counteractive steps. This approach based on pro-active construction methodology, helps to ensure preparedness to address the rock mechanical aspects of the identified segments, thus results in a reduced risk exposure. The study outlines, the process of identification and approach adopted to treat geological hotspots encountered during excavation for large underground rock caverns. © 2013, EJGE.
Guha S.,Engineers India Ltd
AIChE Journal | Year: 2013
Most of the past theoretical works with the rotating ring disk electrode (RRDE) system have been restricted to situations where supporting electrolyte concentration is large enough so that the effects of migration of ionic species in the solution becomes negligible. In this work, effects of ionic migration have been investigated for a RRDE system by solving the differential equations describing mass transfer in presence of ionic migration using numerical technique. Two cases were considered for simulation, presence and absence of migration of ionic species. Results indicate that in presence of migration, collection efficiency of a RRDE system increases for all electrode geometries and concentration boundary layer thickness reduces. Results also indicate that collection efficiency is dependent on electrode geometries. The system chosen for simulation is copper sulfate solution of 0.1 (M) concentration with little supporting electrolyte. It is also noticed that migration effect remains important for supporting electrolyte concentration as high as 0.1 (M). Limiting current condition was assumed. © 2012 American Institute of Chemical Engineers (AIChE).