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Mumbai, India

Hindustan Petroleum Corporation Limited is an Indian state-owned oil and natural gas company with its headquarters at Mumbai, Maharashtra and with Navratna status. HPCL has been ranked 260th in the Fortune Global 500 rankings of the world's biggest corporations and 4th among India's Companies for the year 2012. HPCL has about 25% marketing share in India among PSUs and a strong marketing infrastructure. The President of India owns 51.11% shares in HPCL. Wikipedia.

Chatterjee S.K.,Hindustan Petroleum Corporation
Chemical Engineering | Year: 2011

The maintenance team need to gather comprehensive data related to machinery operation and carry out a logical interpretation of the data to ensure enhanced productivity and reliability. Variation in velocity and acceleration with frequency forms the basis for vibration-severity criteria, provides guidelines for selecting the variable that will be most representative for detecting and analyzing a particular fault. It also explains how failures can occur without warning if the wrong variable is measured. The online vibration data for large machines are typically collected using an integrated monitoring and display system that captures radial displacement data using sensor probes mounted close to the rotating body through the support housing. The vibration data for smaller units are typically collected off line at a preset frequency using portable vibration-monitoring devices. Care must be taken during the manual collection of vibration data to reduce the chance of error and ensure the most comprehensive data set. Source

Hasan A.,Hindustan Petroleum Corporation | Jha K.N.,Indian Institute of Technology Delhi
Journal of Construction Engineering and Management | Year: 2016

Modern construction projects often include incentive/disincentive (I/D) provisions in order to serve a variety of different client objectives. Studies have shown both the advantages and disadvantages of using I/D clauses to improve performance. In India, out of 82 construction projects of varied size and nature investigated, only 14 projects of a critical nature were found to have I/D clauses in their contract document. The present study was carried out to identify various attributes affecting the successful use of I/D clauses in achieving their intended purpose. A total of 25 attributes were identified based on a literature review and structured personal interviews that present practical difficulties while using the I/D contracting method and thus, prevent I/D clauses from unlocking their true potential. These attributes have been evaluated based on the results of a survey conducted among experienced professionals working in the Indian construction industry. Factor analysis conducted on responses associated with important attributes identified five key factors: difficulty in contract management, additional effort by project participants, adverse effect on the working relationship of the client and contractor, increased responsibility of the client, and client's reluctant top management. These factors also explain the reason behind the low acceptance of the I/D contracting method in developing construction markets. Case studies performed in four construction projects show that three out of four projects discussed were delayed due to inadequate understanding and wrong implementation of I/D provisions. This paper will be of interest to academicians and practitioners interested in the use of the I/D contracting method in construction projects. © 2015 American Society of Civil Engineers. Source

Manjunathan P.,Poornaprajna Institute of Scientific Research | Ravishankar R.,Hindustan Petroleum Corporation | Shanbhag G.V.,Poornaprajna Institute of Scientific Research
ChemCatChem | Year: 2016

A novel Zn-Sn composite oxide is reported as a solid bifunctional catalyst for glycerol carbonylation to give glycerol carbonate in high yields. It was prepared by coprecipitation, solid-state and evaporation methods. Physico-chemical properties of the catalysts were investigated by XRD, N2 sorption, temperature-programmed desorption, SEM, and TEM techniques. Coprecipitation was found to be better than the other two methods for carbonylation of glycerol. Higher activity of the catalyst was attributed to a high amount of active sites. A series of Zn-Sn composite oxides with different metal contents and effect of calcination on glycerol carbonate synthesis were also studied. The correlation of activity with total active sites of the catalyst was obtained. Zn-Sn composite catalyst with Zn/Sn molar ratio=2:1 calcined at 600 °C exhibited 96.0 % glycerol conversion with 99.6 % selectivity towards glycerol carbonate under optimized reaction conditions. The catalyst was recycled four times with a marginal decrease in activity. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

Valavarasu G.,Hindustan Petroleum Corporation | Sairam B.,Chennai Petroleum Corporation Ltd
Petroleum Science and Technology | Year: 2013

The isomerization process is gaining importance in the present refining context due to limitations on gasoline benzene, aromatics, and olefin contents. The isomerization process upgrades the octane number of light naphtha fractions and also simultaneously reduces benzene content by saturation of the benzene fraction. Isomerization complements catalytic reforming process in upgrading the octane number of refinery naphtha streams. Isomerization is a simple and cost-effective process for octane enhancement compared with other octane-improving processes. Isomerate product contains very low sulfur and benzene, making it ideal blending component in refinery gasoline pool. Due to the significance of isomerization to the modern refining industry, it becomes essential to review the process with respect to catalysts, catalyst poisons, reactions, thermodynamics, and process developments. The present research thrust in this field along with future scope of work is also discussed briefly. The isomerization process is compared with another well-known refinery process called the catalytic reforming process. © 2013 Copyright Taylor and Francis Group, LLC. Source

Valavarasu G.,Hindustan Petroleum Corporation | Sairam B.,Chennai Petroleum Corporation Ltd
Petroleum Science and Technology | Year: 2013

Pilot plant experiments were conducted over an industrial hydrotreating/hydrocracking catalyst system using vacuum gas oil fraction obtained from a refinery crude distillation unit. Extensive pilot plant data were generated on the performance of industrial hydrocracking catalyst system with respect to conversion, product yields, and product quality at various operating conditions. The pilot plant experiments were carried out in a dual-reactor hydrotreating pilot plant system with downflow mode of operation. The temperature varied from 360 to 400°C and liquid hourly space velocity varied from 0.8 to 2.4 hr-1, keeping a constant pressure of 170 kg/cm2 and H2/HC feed ratio of 845 L/L. The hydrocracked total liquid product was distilled in a true boiling point distillation unit to obtain yields and qualities of different fractions such as naphtha, kerosene, diesel, and unconverted oil. The effect of operating conditions on the performance of the hydrocracking catalyst system was discussed in detail. The kinetics of hydrocracking reaction was studied using a simple first-order reaction and a complex four-lump reaction system and the kinetic parameters were reported. © 2013 Copyright Taylor and Francis Group, LLC. Source

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