Lockley Engineering

Calgary, Canada

Lockley Engineering

Calgary, Canada
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Lockley B.,Lockley Engineering | Lyle B.,GMR Electrical Motors Ltd. | MacDonald W.,Suncor Energy | Noonan M.,Suncor Energy | Paes R.,Rockwell Automation
IEEE Transactions on Industry Applications | Year: 2015

Because of anticipated occasional hydraulic issues in an oil sands slurry pumping application, it was expected that the existing adjustable speed drive (ASD)-driven 2500-hp motors would be overloaded at up to 3333 hp at a slightly reduced speed from time to time. Working from factory test data, estimates were made of losses and temperature rises at the expected load points. The temperature rises were verified by testing a motor on an ASD using a "back-to-back" ASD/motor arrangement in a specially set up off-site arrangement, with the base power available being an 800-kVA alternator. In the particular application, the temperature rises were not excessive, and the predicted loss of insulation life due to the higher insulation temperatures for brief times involved would not be excessive. The expected losses and temperature rises and the test setup and operation are discussed, as well as the achieved temperatures and the method of predicting loss of insulation life. © 2014 IEEE.


Padden L.K.,Padden Engineering LLC | Lockley B.,Lockley Engineering | Mistry B.,Energy | Wood B.,Chevron
IEEE Transactions on Industry Applications | Year: 2013

This paper presents an overview of IEEE 1349-2011, a guide that assists individuals, organizations, and suppliers with the application of motors in Class I, Division 2 and Class I, Zone 2 locations, where flammable gases and vapors may occasionally be present. AC synchronous and induction motors in ratings of 0.18 kW (1/4 hp) and larger are covered. Primary emphasis is on the use of open or nonexplosionproof or nonflameproof enclosed motors in Class I, Division 2 and Class I, Zone 2 locations as covered in NFPA 70-2011. Precautions against excessive surface temperatures and sparking are included. To mitigate hot surface temperatures and sparking, this document provides guidance for selecting, operating, and maintaining motors. IEEE 1349-2001 included Class I, Division 2 applications, and IEEE 1349-2011 was expanded to cover Class I, Zone 2 applications. The new release updates guidance, adds new motor temperature test data submitted by manufacturers and users, expands adjustable speed drive (ASD) application information including a Common ASD section and common-mode voltage calculation method, details additional test methods for determining motor rotor temperature (nondestructive), and includes documented events since 2001. Manufacturers, users, and other industry experts worked about six years to update this consensus standard. This paper does not replace the guide but should be used to supplement and understand the guide, providing examples and highlighting new information. © 2012 IEEE.


Padden L.K.,Padden Engineering LLC | Lockley B.,Lockley Engineering | Mistry B.,General Electric | Wood B.,Chevron
Record of Conference Papers - Annual Petroleum and Chemical Industry Conference | Year: 2012

This paper presents an overview of IEEE 1349-2011 [1], a Guide that assists individuals, organizations, and suppliers with the application of motors in Class I, Division 2 and Class I, Zone 2 locations, where flammable gases and vapors may occasionally be present. AC synchronous and induction motors in ratings 0.18 kW (1/4 hp) and larger are covered. Primary emphasis is on the use of open or nonexplosionproof or nonflameproof enclosed motors in Class I, Division 2 and Class I, Zone 2 locations as covered in NFPA 70-2011. Precautions against excessive surface temperatures and sparking are included. To mitigate hot surface temperatures and sparking, this document provides guidance for selecting, operating, and maintaining motors. IEEE 1349-2001 [2] included Class I, Division 2 applications; and IEEE 1349-2011 was expanded to cover Class I, Zone 2 applications. The new release updates guidance, adds new motor temperature test data submitted by manufacturers and users, expands Adjustable Speed Drive (ASD) application information including a Common ASD section and common-mode voltage calculation method, details additional test methods for determining motor rotor temperature (non-destructive), and includes documented events since 2001. Manufacturers, users, and other industry experts worked about 6 years to update this consensus standard. This paper does not replace the Guide, but should be used to supplement and understand the Guide providing examples and highlighting new information. © 2012 IEEE.


Lockley B.,Lockley Engineering | Wood B.,Chevron
Record of Conference Papers - Annual Petroleum and Chemical Industry Conference | Year: 2010

The API 541, 546 and 547 large motor and generator standards require many features that are not found in "regular" large electric machines. These features lead to a more reliable machine, but they also add to the first cost of the machine. This paper compares the costs and benefits of some of the more significant features that may be specified and makes recommendations as to which optional features should be purchased for particular situations. ©2010 IEEE.


Lockley B.,Lockley Engineering | Wood B.,Chevron
IEEE Industry Applications Magazine | Year: 2013

The American Petroleum Institute (API) 541, 546, and 547 large motor and generator standards require many features that are not found in other large electric machines. These features make the machine more reliable, but they also add to the initial cost. This article compares the costs and benefits of some of the more significant features that may be specified and makes recommendations about the optional features that should be purchased for specific situations. © 1975-2012 IEEE.


Murfield N.,Electrical Machinery Co | Zettervall E.,Electrical Machinery Co | Lockley B.,Lockley Engineering
IEEE Transactions on Industry Applications | Year: 2016

Arc flash protection around electrical process equipment is paramount in any industrial setting, especially in the petroleum and chemical industries. Laboratory testing of motor terminal box structural integrity and rupture panel efficacy during a fault is carried out. Simple calculations are made to validate the design and are compared with the test results. Simulation results are then compared with both test data and the simple calculations. It is shown that more robust simulation techniques are needed to accurately capture the physics of an arc flash and make simulation a feasible tool for design. Recommendations are made for designing and testing future terminal boxes. © 2016 IEEE.


Murfield N.,Electrical Machinery Co. | Zettervall E.,Electrical Machinery Co. | Lockley B.,Lockley Engineering
Record of Conference Papers - Annual Petroleum and Chemical Industry Conference | Year: 2016

Arc flash protection around electrical process equipment is paramount in any industrial setting, especially in the petroleum industry. Laboratory testing of motor terminal box structural integrity and rupture panel efficacy during a fault is carried out. Simple calculations are made to validate the design and are compared to the test results. Simulation results are then compared to both test data and the simple calculations. It is shown that more robust simulation techniques are needed to accurately capture the physics of an arc flash, and make simulation a feasible tool for design. Recommendations are made for designing and testing future terminal boxes. © 2015 IEEE.


Chisholm M.,General Electric | D'Alleva G.,ExxonMobil | Lockley B.,Lockley Engineering | Ocmand J.,Motiva Enterprises | And 2 more authors.
Record of Conference Papers - Annual Petroleum and Chemical Industry Conference | Year: 2012

API 541 5th edition was written by a taskforce composed of users, consultants and manufacturers to provide a common performance standard to cover the minimum requirements for form-wound squirrel-cage induction motors 375 kW (500 HP) and larger. The Standard is designed to outline the requirements of all aspects of an induction machine. When compared to earlier editions, this revision has enhancements making it easier to purchase and specify a more durable machine. This edition has new requirements in the areas of frame vibration and insulation tests; plus improved sections concerning dynamic analysis and thermal withstand capabilities. The Standard is used in conjunction with the extensively modified data sheets. © 2012 IEEE.


Griffith T.,General Electric | Bonnett A.H.,Emerson Electric | Lockley B.,Lockley Engineering | Yung C.,EASA
IEEE Industry Applications Magazine | Year: 2011

This Article Details the Updates and modifications to the 1996 revision of IEEE 1068, Recommended Practice for the Repair and Rewinding of Motors in the Petroleum and Chemical Industry. It contains only selected topics present within the standard and should not be treated as a substitute for the entire standard. A major change in the document is its evolution to full standard status. The IEEE Standards Association also granted the working groups petition to broaden the scope and title to include process industries in general. Such recognition acknowledges its value to those employing machines in demanding services and severe environments, such as the cement trade and pulp and paper processing. IEEE Standard 1068-2010 was restructured to better track the methodologies and processes employed in present-day repair facilities. Substantive improvements include incorporation of currently available technology, document specific testing, evaluation criteria, and clarification of end user and service center responsibilities. © 2011 IEEE.


Chisholm M.,General Electric | D'Alleva G.,ExxonMobil | Lockley B.,Lockley Engineering | Ocmand J.,Royal Dutch Shell | And 2 more authors.
IEEE Industry Applications Magazine | Year: 2014

The fifth edition of American: Petroleum Institute (api) 541 was written by a task force of users, consultants, and manufacturers to provide a common performance standard to cover the minimum requirements for form-wound squirrel-cage induction motors 375 kW (500 hp) and larger. The standard is designed to outline the requirements of all aspects of an induction machine. When compared to the earlier editions, this revision has enhancements that make purchasing and specifying a more durable machine easier. This edition has new requirements in the areas of frame vibration and insulation tests plus improved sections concerning dynamic analysis and thermal withstand capabilities. The standard is used in conjunction with the extensively modified data sheets. This article provides an overview of the revisions to API 541 contained in the new edition. © 2014 IEEE.

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