Modal Analysis as a Tool to Resolve Pump Vibration Issues
|
|
- Bertha Hamilton
- 6 years ago
- Views:
Transcription
1 Modal Analysis as a Tool to Resolve Pump Vibration Issues John Koch HDR, Bellevue, WA jkoch@hdrinc.com ABSTRACT Vibration spectrum analysis and modal analysis are tools designers and plant staff can use to optimize their pumping systems. This paper specifically looks at the ways these sophisticated tools were used to diagnose and solve operational and mechanical issues on a two-stage raw sewage pumping station constructed in 1972 and upgrade twice since then to achieve its current 227 ML/d (60 mgd) design capacity. The modal and vibration analysis resulted in solving an intermediate bearing support structure issue, but uncovered other hydraulically induced vibration issues which will require additional investigation and study to resolve. KEYWORDS: Modal, vibration, Hydraulic Institute, pump, natural frequency, resonance INTRODUCTION The essential step in solving vibration problems is to understand resonance. High vibration levels can be caused by resonance in the rotating elements of the pump shaft, impeller or the motor rotor, in the structure of the pump and its volute, bearing housing or motor frame. Severe vibration, more appropriately defined as vibration above the Hydraulic Institute Standard (HI) recommended maximum limits as contained in ANSI/HI can destroy bearings in pumps and motors as well as destroy mechanical seals. Resonance conditions in mechanical systems occur when the excitation forces coincide with the natural frequencies of the structure. A key to defining the source of the resonance is to determine if the source of the resonance is in the rotating elements of the pump or in the pump assembly including the pump base plate and supports and the structure the pump and pump base are attached to. To identify a resonance condition requires obtaining the operating vibration spectrums of the system and identifying the natural frequencies of the system. The rotating elements of a pump or motor can have a critical speed close to their operating speed; however, no rotating element is ever intentionally designed to operate in its critical speed or go through its critical speed. In my more than 45 years of commissioning equipment, there has only been one instance where the rotating element was the source of excessive vibration and that was a vertical pump s motor shaft which was excited by the variable frequency drive (VFD) carrier frequency. Figure 1 illustrates the excessive vibration of this installation. The vertical axis is inches per second-root mean squared; the horizontal axis is frequency in Hz. 298
2 Figure 1 Motor Shaft Vibration All other vibration issues that I have encountered have been attributed to excitation of the pump/motor structure. Most often when a pump s vibration exceeds HI limits, the issue is with the pump and its base not with its shaft. Almost all equipment in water and wastewater treatment plants are mounted on concrete equipment pads with grout poured in and under the equipment base as illustrated in Photograph
3 Photograph 1- Grouted Pump Base Grouting the pump s equipment base provides damping to the pump and motor. Damping reduces the maximum amplitude of the vibration caused by resonance and in doing so can bring the equipment into compliance with HI maximum vibration limits. This is one of the reasons to make sure the equipment base is in full contact with the concrete equipment pad and all the air bubbles are expelled from the pourable grout mixture. The key tenet of resolving natural frequency issues is adding mass to a structure or stiffening the structure to move the natural frequencies out of the operating range of the equipment. Adding mass will typically lower the system s natural frequency; whereas, stiffening the structure of a rotating piece of equipment will raise its natural frequency. Photograph 2 illustrates where mass was added to a pump in an attempt to lower its natural frequency below the pump s operating speed. 300
4 Added Weight Photograph 2 Mass Added to Pumps Trying to do add mass and stiffen the structure most of the time is counterproductive. The formula for calculating the reed critical frequency or natural frequency is: Where k = stiffness and m = mass Experimental modal analysis is based on measured frequency response functions between a force applied to the structure and the response of the structure. The measured frequency response functions are post processed using modal analysis software to identify the natural frequencies of the structure. Accelerometers are used to measure the response of the structure and an instrumented hammer is used to apply the force to the structure as shown in Photograph
5 Photograph 3 Impact Hammer to Determine Natural Frequency The natural frequency of a system is a property of the system that is defined by the inertial and elastic properties (mass and stiffness) of the structure. The inertial and elastic properties of a structure are a function of the material properties and the geometry of the components of the structure. Each natural frequency has a particular displacement pattern, called a mode shape, and each mode shape is independent of all other mode shapes of the system. To identify a resonance condition in pumping systems, the measured operating vibration spectrums are used to identify high vibration levels at the natural frequencies obtained from the modal analysis. The measured vibration spectrums are reviewed to identify any vibration levels that exceed the maximum allowable levels as defined by accepted industry standards. For components that have vibration levels above the maximum allowable levels, the vibration spectrum is inspected to determine at which frequency(s) the high vibration levels reside. Once the high vibration level frequency has been identified, it is compared to the results of the modal analysis to determine if there is a resonance condition. 302
6 As important as the stiffness of the pump and structure to reduce vibration levels below a HI maximum level is the hydraulic conditions at the inlet to the pump s impeller. American National Standard (ANSI)/HI recommends a minimum of 5 diameters of unobstructed straight pipe into a pump suction unless a long radius reducing elbow with more than 50% area reduction is used. For a 300 mm (12-inch) pump suction this means a long radius 300 x 450 mm (12 x 18-inch) elbow would be required. Photograph 4 illustrates how dye in a standard radius elbow swirls into a pump inlet. Photograph 4 Standard Radius Elbow Comparing the standard radius elbow to the long radius elbow in Photograph 5, the flow stream is more uniform in the long radius reducing elbow than in the standard elbow. Turbulent flow into the eye of the pump impeller will cause unstable flow conditions and potentially high vibration levels in the pump. 303
7 Photograph 5 Long Radius Reducing Elbow BACKGROUND A 227 ML/d (60 mgd) two-stage high head, greater that 76m (250 feet) total dynamic head (TDH) raw sewage pumping station was evaluated for its problematic maintenance issues and perceived vibration problems. Several studies and attempts to resolve the issues were performed over the last 15 years including a hydraulic model study. The station was configured with the discharge of the first pump routed to the intake of the second stage pump. Photograph 6 illustrates the first and second stage pumps installed in the cramped pump room. 304
8 Photograph 6 - Two Stage Pumping Units Several of the maintenance issues in the pumping station were due to the tight quarters for performing any maintenance related activities. Many of the operational problems with the pumping units were the short suction piping and 90-degree fitting into the suction of these vertically configured pumps. The three different levels for pumps and motors presented both maintenance and operational issues with the units. Photograph 7 illustrates the motors on the next level above the pump room level. 305
9 Photograph 7 - Pump Motor Level The installation utilized a long shaft assembly between the two floors. The shafting is supported by intermediate guide bearings approximately half way between the two floors which are illustrated in Photograph 8. Photograph 8 - Intermediate Guide Bearing Supports 306
10 Pumps and intermediate shaft bearings were typically rebuilt and replaced every months because of the failure of one or more of the components in each set of pumps. METHODOLOGY The initial vibration analysis for the two-stage raw sewage pumping station determined there were vibration issues with the intermediate bearing assemblies which could be transmitting a resonance vibration to the pumps below. The intermediate support bearing structure was a series of parallel 41 cm (16-inch) wide flange beams (WF16X26) and 30 cm (12-inch) (C12x20.7) cross support channel beams for each pump set as shown in Photograph 9. Photograph 9 - Intermediate Bearing Supports The multiple reference impact testing approach was used for this project where the response is measured at fixed locations and the forces are applied at all of the locations used in the modal analysis. Multiple reference impact testing is ideal for large structures like the intermediate bearing structure because it simplifies the measurement process allowing the frequency response functions to be acquired efficiently. 307
11 The intermediate bearing support frequency response function measurements were made using a Dytran Instruments Model 5802A impulse hammer and 3 PCB Piezotronics Model 604B31 triaxial accelerometers. For each measurement point the structure was excited with the hammer and 9 frequency response functions were measured. A total of 62 and 66 points were measured on the stage 1 and stage 2 intermediate bearing support structures respectfully. The measured frequency response functions were used to estimate the natural frequencies of the intermediate bearing support structures. The OROS Modal 5.2 modal analysis software was used to perform the modal analysis from the measured frequency response functions. For this project, the OROS BroBand modal identification module was used which is based on the Polyreference Least Squares Complex Frequency Algorithm. The modal analysis identified four modes (natural frequencies) of interest in the Hz frequency range of the stage 1 and 2 intermediate bearing support structures. The operating speeds of pump sets 1-4 were 1800 rpm (30 Hz) and pump sets 5-12 were 1200 rpm (20 Hz). The modes of interest identified by modal analysis are shown in Table 1 and all are in or very close to the pump operating ranges. Table 1: Intermediate Bearing Support Natural Frequencies Mode Stage 1 (Hz) Stage 2 (Hz) The mode shape for the Stage 1 structure s first natural frequency at Hz is shown in Figure 2. The first mode is the center section of the intermediate bearing support which supports the intermediate bearings for Pumps 5-8 deflecting in the Y (horizontal) direction. Figure 2 - Stage 1 Mode Deflecting in the Y-Axis 308
12 The mode shape for the Stage 1 structure s fourth natural frequency at Hz is shown in Figure 3. The Hz mode shape in the Stage 1 intermediate bearing support is the structure deflecting in the X (north-south) direction while bending in the Z direction (vertically) in a wave fashion. Figure 3 - Stage 1 Mode Deflecting in the X-Axis Centrifugal pumps typically have two main sources of vibration as shown at rotating speed and at blade pass frequency. Pumps 1-4 operate at 1,800 RPM (30 Hz) and the pump impellers have 2 blades with a blade pass frequency of 60 Hz. Pumps 5-12 operate at 1,200 RPM (20 Hz) and the pump impellers have 3 blades with a blade pass frequency of 60 Hz. In Table 2, the first three rows show the operating frequency and the first two harmonics for both pumps. The last three rows in Table 2 show the blade pass frequency and its first two harmonics. Table 2: Pump Operating and Blade Pass Frequencies (Hz) Forcing Frequencies Pumps 1-4 Pumps X X X X Blade Pass X Blade Pass XBlade Pass The maximum allowable vibration levels for the pumps, drive motors and intermediate bearing support were determined using the Hydraulic Institute standard , ISO , Technical Associates of Charlotte, P.C. criteria for overall condition rating and experience. The maximum allowable vibration levels were set at 8.64 mm/sec (0.34 in/sec) root mean squared (RMS) for the pumps, 5.08 mm/sec (0.20 in/sec) RMS for the intermediate bearing support, 4.57 mm/sec (0.18 in/sec) RMS for 74.6 kw(100 hp) drive motors and 7.11 mm/sec (0.28 in/sec) RMS for the 298 to 373 kw (400 and 500 hp) drive motors. 309
13 All of the overall vibration levels measured on Pumps 1, 2, 5, 6, 9, and 10 were compared to the maximum allowable. The results are shown in Table 3. The vibration levels, which exceed the maximum allowable levels in Table 3, are red and the levels that are close to the maximum allowable levels and warrant a closer look are highlighted in yellow. Table 3 - Measured Overall Vibration Levels Pumps 1, 2, 5, 6, 9, and 10 mm/sec (in/sec) RMS Location Pump 1 Pump 2 Pump 5 Pump 6 Pump 9 Pump 10 Motor X (0.11) (0.01) (0.04) (0.09) (0.10) (0.14) Motor Y (0.06) (0.07) (0.04) (0.12) (0.07) (0.14) Motor Z (0.04) (0.03) (0.24) (0.02) (0.03) (0.07) Intermediate Bearing X (0.29) (0.11) (0.11) (0.06) (0.08) (0.23) Intermediate Bearing Y (0.06) (0.16) (0.19) (0.12) (0.85) (0.64) Intermediate Bearing Z (0.04) (0.06) (0.08) (0.17) (0.06) (0.11) Pump X (0.17) (0.35) (0.43) (0.50) (0.16) (0.57) Pump Y Pump Z (0.20) 0.76 (0.03) (0.19) 1.27 (0.05) (0.29) 2.29 (0.09) (0.23) 4.83 (0.19) (0.29) 2.79 (0.11) (0.15) 6.35 (0.25) Pump 1 vibration levels are below the Hydraulic Institute maximum allowable levels at all locations and directions, except the intermediate bearing X direction at 7.73 mm/sec (0.29 in/sec) which is above the 5.10 mm/sec (0.20 in/sec) (RMS) maximum vibration level for the intermediate bearing. Figure 4 shows the vibration spectrum from the Pump 1 intermediate bearing. The dominant vibration level is at operating speed (30 Hz) of the pump. The modal analysis also identified a natural frequency of the Stage 2 intermediate bearing support at Hz. The mode shape for the Stage 2 intermediate bearing support at Hz natural frequency is predominately in the X direction. Based on these results, the high levels of vibration of the Pump 1 intermediate bearing are due to a resonance condition. 310
14 Velocity (in/sec RMS) WEF Collection Systems Conference Pump #1 Intermediate Bearing Support Vibration X Direction Y Direction Z Direction Frequency (Hz) Figure 4 - Pump 1 Intermediate Bearing Support Vibration Spectrum Pump 2 vibration levels are below the Hydraulic Institute maximum allowable levels at all locations and directions except the pump in the X direction. The vibration spectrum for Pump 2 shows that the X direction vibration is dominated by the blade pass frequency at 60 Hz and 2 times blade pass at 120 Hz as shown in Figure
15 Velocity (in/sec RMS) WEF Collection Systems Conference Pump #2 Vibration X Direction Y Direction Z Direction Frequency (Hz) Figure 5 - Vibration Spectrum for Pump 2 The vibration at the blade pass and 2 times blade pass were below the maximum allowable vibration level of 8.64 mm/sec (0.34 in/sec) RMS. Pump 2 does not have any natural frequencies close to 60 Hz, which eliminates a resonance condition as the root cause of the high vibration levels. Pump 2 also shows signs of cavitation, which is an indicator of hydraulic issues with the pump, which will also increase the blade pass vibration levels. The cavitation induced vibration in the Hz range increased the overall vibration level to 8.89 mm/sec RMS (0.35 in/sec RMS). The same analysis procedure was applied to Pumps 5-10 which, like Pumps 1 and 2, found the vibration levels that exceeded the maximum allowable levels on the pumps were due to hydraulic issues with the pumps and not due to resonance conditions in the pump structure. The high vibration levels on the intermediate bearing support on Pumps 9 and 10 were due to resonance conditions where the pump operating speed of 20 Hz was exciting the 20 Hz natural frequencies in the intermediate bearing structure. 312
16 RESULTS The modal analysis suggested that stiffening the intermediate bearing support structure would raise the reed critical speed of the supports. A finite element analysis was performed with the data from the modal analysis which determined that welding a 7mm (1/4 ) plate to the top and bottom of the longitudinal beam structure would provide the necessary stiffness to change the natural frequency of the support system. Photograph 10 shows the completed modifications to the beams. Photograph 10 - Modified Intermediate Bearing Support Structure After the suggestions to stiffen the intermediate bearing structures were performed by the City, another round of analysis of the entire pumping station was conducted to gather at one time the following information to try and pinpoint the operational and maintenance issues with this pumping station. The second round of vibration testing included: Vibration signature of each pump, intermediate bearing and motor. Flow from each two stage pump set measured with the stations flow meters that had been recently calibrated. Suction and discharge pressure from each pump measured with liquid filled calibrated pressure gauges at the appropriate pressure ranges and fitted with diaphragm seals. Power for each set of pumps measured at each motor starter. The maximum allowable vibration levels were determined using the Hydraulic Institute standard , ISO , Technical Associates of Charlotte, P.C. criteria for overall condition rating. The Hydraulic Institute Standard addresses the solids handling pump vibration levels but does not address the motor or intermediate bearing. Technical Associates of Charlotte 313
17 criteria addresses vertical pump based on the height of the motor above grade but not a solids handling pump specifically. Neither ISO nor Technical Associates of Charlotte specifically address the intermediate bearing support maximum allowable vibration levels. The maximum allowable vibration level for the intermediate bearing was determined from experience. Table 4 shows the maximum allowable vibration levels defined by the two (2) standards, (HI and ISO) Technical Associates of Charlotte and experience. The last column on the right in the table shows the maximum allowable vibration levels for this project based on the two (2) standards and experience. Table 4 - Maximum Allowable Vibration Levels (in/sec RMS) Location HI ISO Technical Associates of Charlotte Criteria used Motor 100 HP Motor 400 and 500 HP Intermediate Bearing 0.20 Pump Vibration measurements at the intermediate support structure were recorded after the modifications were made by city personnel. The modifications had reduced the intermediate bearing vibration levels from mm/sec (0.86 in/sec) RMS to 3.60 mm/sec (0.14 in/sec) RMS, considerably below the maximum allowable level of 5.00 mm/sec (0.2 in/sec) RMS. The City had achieved success in reducing the resonance frequency and vibration issues associated with the intermediate bearing support structure. DISCUSSION Vibration and modal analysis defined structural/mechanical issues with the two-stage vertical end suction pumps. Structural issues were resolved with the intermediate bearing support structure when the independent wide flanged beams were stiffened and modified to act as one large box beam as shown in Photograph 10. With this piece of the puzzle resolved, the hydraulic induced vibration issues can be further investigated. The vibration signature of all of the pumps, once the resonance from the intermediate bearing was reduced, was at blade pass and 2x blade pass frequency. Centrifugal pumps typically have a dominant vibration at blade pass frequency. Blade pass frequency is the number of impeller blades times the operating RPM. As an example a two bladed impeller operating at 1800 RPM (30 Hz) would have a blade pass frequency at 60 Hz (30 Hz x 2). Issues that contribute to blade pass vibration are: 1. Non-laminar fluid flow to the pump suction and impeller. 2. Net suction positive pressure required (NPSH3) exceed net positive suction pressure available (NPSHA). Or simply stated, the water level in the wet well is too low. 314
18 3. Pump operating outside of the pump s preferred operating range (POR) and/or to the far right of the acceptable operating range (AOR). Further detailed investigation and analysis of the data collected will be required to pinpoint the root cause of the continued hydraulic vibration issues with the raw sewage two-stage vertical end suction centrifugal pumps. CONCLUSION Modal and vibration spectrum analysis, while not the ultimate resource for diagnosing and resolving mechanical failures, are powerful tools to assist operation and maintenance personnel in determining some of the root causes of equipment failure. As was the case in the investigation of the two-stage vertical end suction pumps, one issue was eliminated; however, several other potential problems were uncovered. Vibration monitoring is a great evaluation tool that can be used to diagnose issues and problems. It can and should be a tool for acceptance of installed pumps to confirm they meet the minimum American National Standards Institute/Hydraulic Institute Standards. ACKNOWLEDGEMENTS The authors gratefully acknowledge the staff at the wastewater pumping stations for their patience while all of the issues were investigated and satisfactorily resolved. I also wish to thank the construction personnel that persevered during the issues with the suppliers and factory personnel as well as the hydraulic modeling laboratory for their continued help in evaluating pumping station hydraulics. Balancing Services Company and AVS Engineering, LLC are thanked for their continued assistance in diagnosing vibration issues with rotating equipment across the country. REFERENCES Hydraulic Institute (2009) Rotodynamic Pumps for Vibration Measurements and Allowable Values; ANSI/HI 9.6.4; Parsippany, New Jersey. Hydraulic Institute (2009) Rotodynamic Pumps for Pump Piping; ANSI/HI 9.6.6; Parsippany, New Jersey. Technical Associates of Charlotte, P.C. Vibration Criteria; Charlotte, North Carolina. International Organization for Standardization, :2009 Mechanical Vibration, Geneva, Switzerland 315
Pump Vibration. Related Considerations and How Much is Too Much? MWEA Collection Systems Seminar. Steve Fehniger, P.E.
Pump Vibration Related Considerations and How Much is Too Much? MWEA Collection Systems Seminar Steve Fehniger, P.E. October 12, 2017 Agenda Presentation Focus Areas Pump Vibration Considerations Operating
More information2015 HDR, all rights reserved.
2015 HDR, all rights reserved. Upgrades for a Critical Wastewater Pump Station Northeast Ohio Regional Sewer District (NEORSD) Second Stage Lift Station, Southerly WWTC Cleveland, OH Robin Rupe (NEORSD)
More informationThe Islamic University of Gaza- Environmental Engineering Department Networks Design and Pumping Stations EENV Lecture 9: Pumping Station
The Islamic University of Gaza- Environmental Engineering Department Networks Design and Pumping Stations EENV 5315 Lecture 9: Pumping Station Water supply pumping system Pumps are used to increase the
More informationPumping System Vibration
Pumping System Vibration Understanding the Fundamentals Eric J. Olson Mechanical Solutions, Inc. (MSI) ejo@mechsol.com Agenda 1. Vibration testing and analysis fundamentals 2. Structural and acoustic resonance
More informationInstallation Guidelines for Flygt Pumps Pump Anchoring Recommendations
Issued: Installation Guidelines for Flygt Pumps Pump Anchoring Recommendations Introduction Proper installation and anchorage of Flygt pumps and installation accessories is critical to limiting vibration
More informationCHAPTER III DYNAMIC BEHAVIOR OF A LABORATORY SPECIMEN
CHAPTER III DYNAMIC BEHAVIOR OF A LABORATORY SPECIMEN To address the vibration response of a long span deck floor system, an experiment using a specimen that resembles the conditions found in the in-situ
More informationVIBRATION ANALYSIS OF VERTICAL PUMPS
ISSN: 0976-2876 (Print) ISSN: 2250-0138(Online) VIBRATION ANALYSIS OF VERTICAL PUMPS S. AHILAN a1, M. HEMKUMAR b AND NATRAJ MISHRA c ab UPES, Dehradun, India c Mechanical Department, UPES, Dehradun, India
More informationSUGGESTED SPECIFICATIONS Pump Frames through 64132
TYPE HBB - HORIZONTAL SOLIDS-HANDLING WASTEWATER PUMPS Pump Frames 44081 through 64132 GENERAL Furnish and install Horizontal Flexible Coupled Dry Pit Pumping Units complete with all accessories and appurtenances
More informationVibration Certification Case Studies Vertical Pump Machinery Controlled with Variable Frequency Drives
R RUSH USH E EQUIPMENT QUIPMENT A ANALYSIS, NALYSIS, IINC. NC. 2401 EAST #181 43430 EASTSEVENTEENTH FLORIDA AVE.,ST., #F331 Rush@RushEngineering.com Rush@RushEngineering.com SANTAHEMET, ANA, CALIFORNIA
More informationCHAPTER 4. 1:6-Scale Frame: Stiffness and Modal Testing 4.1 OVERVIEW
CHAPTER 4 1:6-Scale Frame: Stiffness and Modal Testing 4.1 OVERVIEW A 1:6-scale steel moment frame was designed for shaking-table experiments described in Chapter 5 based on Drain-2DX (DRAIN) analyses.
More informationVibration Certification Case Studies Vertical Pump Machinery Controlled with Variable Frequency Drives
RRUSH NC. USHE EQUIPMENT QUIPMENTA ANALYSIS, NALYSIS,II NC. 43430 EAST SEVENTEENTH FLORIDA AVE., ST., #F331 2401 EAST #181 Rush@RushEngineering.com Rush@RushEngineering.com HEMET, CA 92544-7210 SANTA ANA,
More informationOptimized Skid Design for Compressor Packages
Optimized Skid Design for Compressor Packages Chris Harper, P.Eng. Principal Engineer charper@betamachinery.com By Beta Machinery Analysis Presented at: Gas Machinery Conference 2013 October 7-10, 2013
More informationPeerless Pump Company Handbook of Engineering Data
Peerless Pump Company Handbook of Engineering Data Brochure EM77 DEFINITION OF PUMP TERMS A.1 A line shaft vertical turbine pump is a vertical-shaft centrifugal or mixed-flow pump with rotating impeller
More informationDynamic Design of the Foundation of Reciprocating Machines for Offshore Installations in Persian Gulf
Dynamic Design of the Foundation of Reciprocating Machines for Offshore Installations in Persian Gulf Mohammad AHANGAR Univrsity Of Tehran, Mohammad_ahangar_84@yahoo.com Hesam Sharifian JAZE Univrsity
More informationFlygt N-Pumps 3085, 3102 & For reliable and efficient wastewater handling
Flygt N-Pumps 3085, 3102 & 3127 For reliable and efficient wastewater handling The Concept Flygt N-Pump series Reduced pumping efficiency, high energy and maintenance costs shouldn t be a fact of life
More informationG2S. Vertical Sump Pump
G2S Vertical Sump Pump G2S Our process-duty vertical sump pump for water, hydrocarbons, and acid and alkaline solutions. Modular in design, the G2S sump pump is made This pump comes standard with lip seals
More informationT Series. Self-Priming Centrifugal Pumps
T Series Self-Priming Centrifugal Pumps The World Leader in Solids Handling Self-Priming Pumps. When industry looks for more reliable and efficient ways to move waste, they look to Gorman-Rupp self-priming
More informationPUMP TECHNOLOGY. Are we making any progress? S. Gopalakrishnan Flowserve Corporation Pump Division Vernon, California. ASME FEDSM May 31, 2001
PUMP TECHNOLOGY Are we making any progress? S. Gopalakrishnan Flowserve Corporation Pump Division Vernon, California ASME FEDSM May 31, 2001 PUMP DIVISION LARGEST PUMP HIGHEST HORSEPOWER American Electric
More informationVIBRATION ACCEPTANCE TEST REPORT
VIBRATION ACCEPTANCE TEST REPORT Sample Report Mixed Liquor Pumps 1, 2, 3, 4, 6 DATA COLLECTED: 2/6/13 P K V e loc ity in In/S e c 0.016 0.012 0.008 0.004 1241.4 IRWD - Mixed Liquor Pump 1 7MLP1-3010-P1Y
More informationPUMPS/ COMPRESSORS. Mounting, Levelling and Vibration Control of: Pumps. Compressors POWER GENERATION - PUMPS & COMPRESSORS
APPLICATIONS AP-Power-Pumps Compressors-13a Mounting, Levelling and Vibration Control of: PUMPS/ COMPRESSORS Pumps Pumps are the most widely produced machinery in the world. They are used for raising,
More informationPUMPS/ COMPRESSORS. Mounting, Levelling and Vibration Control of: Pumps. Compressors POWER GENERATION - PUMPS & COMPRESSORS
APPLICATIONS AP-Power-Pumps Compressors-13a Mounting, Levelling and Vibration Control of: PUMPS/ COMPRESSORS Pumps Pumps are the most widely produced machinery in the world. They are used for raising,
More informationSET PROJECT STRUCTURAL ANALYSIS OF A TROUGH MODULE STRUCTURE, IN OPERATION AND EMERGENCY Luca Massidda
SET PROJECT STRUCTURAL ANALYSIS OF A TROUGH MODULE STRUCTURE, IN OPERATION AND EMERGENCY Luca Massidda Table of Contents Introduction... 2 Finite element analysis... 3 Model description... 3 Mirrors...
More informationThe importance of optimising sump design for the reliable operation of rotodynamic pumps
The importance of optimising sump design for the reliable operation of rotodynamic pumps Richard Brewis Project Engineer BHR Group Steve Graham Sales Director Bedford Pumps Ltd 02 Why is it important to
More informationPump Company. Simsite Structural Composite Pumps. The only Pump that is Impervious to Salt Water Corrosion. Since 1919 VERTICAL PIT
Pump Company Since 1919 Simsite Structural Composite Pumps VERTICAL PIT SERIES 10000 MARINE & INDUSTRIAL SERIES 6000 VERTICAL IN LINE NAVY STANDARD VERTICAL TURBINE HORIZONTAL VORTEX The only Pump that
More informationPlunger pumps are used in a wide variety of
Kelly Eberle and Cajetan Ijeomah, Wood Group, Canada, outline a case study of vibration-induced cracks in a plunger pump piping system. Plunger pumps are used in a wide variety of applications, such as
More informationSelf-Priming pumps, when it really matters
Self-Priming pumps, when it really matters Horizontal Self-Priming pump www.komak.nl Engineered pump solutions Specially designed and manufactured, by KOMAK, to operate under the most difficult conditons.
More informationSECTION PACKAGE BOOSTER PUMP STATIONS
SECTION 331223 PACKAGE BOOSTER PUMP STATIONS Scope: The Contractor shall install a pump station at two locations to be determined by the Owner. These pump stations shall be designed to deliver flow to
More informationVibration Field Problem Resolved with Analytical Diagnostic Approach and Innovative Impeller Design. Bruno Schiavello - Giancarlo Cicatelli
Vibration Field Problem Resolved with Analytical Diagnostic Approach and Innovative Impeller Design Bruno Schiavello - Giancarlo Cicatelli Bruno Schiavello is Director for Fluid Dynamics at Flowserve,
More informationSeries Sump and Sewage Systems
Series 000 Sump and Sewage Systems file no: 0. date: may 17, 13 supersedes: 0. date: march 29, 13 Series 000 Sump Series 0 & 2 Armstrong offers a complete range of high performance, easily maintained Column
More informationControl of Earthquake Resistant High Rise Steel Frame Structures
Control of Earthquake Resistant High Rise Steel Frame Structures A K Datta a,*, S Sivaprasad a, a CSIR-National Metallurgical Laboratory, Jamshedpur-831007, India e-mail: akd@nmlindia.org P Prasad b b
More informationGoulds API ISO / API 610 VS4 Vertical Sump Pump
Goulds API 3171 ISO 13709 / API 610 VS4 Vertical Sump Pump API 3171 ISO 13709 / API 610 11 th edition, compliant VS4 sump pump Capacities to 680 m³/h (3000 GPM) Heads to 290 m (950 feet) Temperatures to
More informationUniversity Curriculum Development for Decentralized Wastewater Management
Page i University Curriculum Development for Decentralized Wastewater Management Module Text Paul Trotta, P.E., Ph.D. Justin Ramsey, P.E. Chad Cooper September 004 Page ii NDWRCDP Disclaimer This work
More informationSPECIFICATIONS - DETAILED PROVISIONS Section Progressing Cavity Pump C O N T E N T S
SPECIFICATIONS - DETAILED PROVISIONS Section 11938 - Progressing Cavity Pump C O N T E N T S PART 1 - GENERAL... 1 1.01 GENERAL... 1 1.02 RELATED SPECIFICATION SECTIONS... 1 1.03 MANUFACTURERS... 1 PART
More informationPUMPING TECHNOLOGY TRAINING COURSES GUIDE
PUMPING TECHNOLOGY TRAINING COURSES GUIDE Pumping Fundamentals I Pump Selection I Pump Testing I Pump Systems I Pump Hydraulics PUMPING TECHNOLOGY PUMPING TECHNOLOGY TRAINING COURSES INFORMATION w w w.
More informationGRUNDFOS WHITE PAPER. Although a baseplate is designed to be a. FOUNDATIONS by Greg Towsley DESIGN RECOMMENDATIONS
GRUNDFOS WHITE PAPER FOUNDATIONS by Greg Towsley Although a baseplate is designed to be a rigid support for a pump and its driver, it will deflect. For this reason a foundation may be provided for additional
More informationII-100 II-101 INTRODUCTION
II-100 II-101 INTRODUCTION MODELLING OF GRINDING FACILITIES by Chris Meimaris, Managing Director, EAnD, Brisbane, QLD, Australia A. M. Boughey, Project Engineering Manager, Newcrest Mining, Sydney, NSW,
More informationMaintenance Costs. Start With. Not when it comes to your pumps! Photo 1: Extensive damage on subject pump
Maintenance Costs Start With By Robert Aronen and George Dierssen, Industry Uptime, and Mary Hoang, PE, San Jose City Municipal Water System Supersize it? Not when it comes to your pumps! High maintenance
More informationFAIRBANKS NIJHUIS SUBMERSIBLE SOLIDS HANDLING PUMPS.
FAIRBANKS NIJHUIS SUBMERSIBLE SOLIDS HANDLING PUMPS www.fairbanksnijhuis.com FAIRBANKS NIJHUIS Introduction Fairbanks Nijhuis manufactures a complete line of submersible pumps for municipal and industrial
More informationCode No: R Set No. 1
Code No: R050210201 Set No. 1 II B.Tech I Semester Regular Examinations, November 2006 FLUID MECHANICS & HYDRAULIC MACHINERY (Electrical & Electronic Engineering) Time: 3 hours Max Marks: 80 Answer any
More informationComputational Fluid Dynamic Analysis in De-staging of Centrifugal Pumps
Computational Fluid Dynamic Analysis in De-staging of Centrifugal Pumps Vishnu R Nair 1, Shinas K V 2, Souganth Sugathan Manjhiparambil 3 Student, Department of Mechanical Engineering, IES College of Engineering,
More informationCombiSump. Sump pump
CombiSump Sump pump CombiSump Centrifugal sump pump CombiSump is the sump pump solution for thin liquids. The pump is part of Johnson Pump s Combi-system, a modular programme of single stage centrifugal
More informationSECTION VIBRATION CONTROLS FOR PLUMBING PIPING AND EQUIPMENT
Page 220548-1 SECTION 220548 - PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections,
More informationFlygt C-pumps Submersible waste and raw water pumps
Flygt C-pumps 3068 3800 Submersible waste and raw water pumps Flygt submersible pumps for a variety of applications Submersibles Flygt pumps operate directly in the liquid being pumped, which means they
More informationDesign recommendations
Water & Wastewater Design recommendations Pump and pipe mechanical installation guidelines Contents Introduction... 3 Vibration... 4 Piping support... 5 foundations... 6 Anchor recommendations... 6 Pump
More informationFAIRBANKS NIJHUIS SUBMERSIBLE SOLIDS HANDLING PUMPS.
FAIRBANKS NIJHUIS SUBMERSIBLE SOLIDS HANDLING PUMPS www.fairbanksnijhuis.com FAIRBANKS NIJHUIS Introduction Fairbanks Nijhuis manufactures a complete line of submersible pumps for municipal and industrial
More informationDIAGNOSIS PUMP PROBLEMS USING VIBRATION ANALYSIS
DIAGNOSIS PUMP PROBLEMS USING VIBRATION ANALYSIS Sami A. A. El-Shaikh Mechanical & Electrical Research Institute, National Water Research Center, Ministry of Water Resources & Irrigation, Delta Barrage,
More informationPUMPS FOR INDUSTRY. The Vertical Pump Specialists CONTENTS: Introduction & User List. Product Overview. Vertical Process Pumps...
PUMPS FOR INDUSTRY CONTENTS: The Vertical Pump Specialists Introduction & User List Product Overview Vertical Process Pumps... Series 600 Vertical Sewage Pumps... Series 700 Vertical Sump Pumps... Vertical
More informationResponse Analysis of an RC Cooling Tower Under Seismic and Windstorm Effects D. Makovička
Response Analysis of an RC Cooling Tower Under Seismic and Windstorm Effects D. Makovička The paper compares the RC structure of a cooling tower unit under seismic loads and under strong wind loads. The
More information6. PUMPS AND PUMPING SYSTEM
6. PUMPS AND PUMPING SYSTEM Syllabus Pumps and Pumping System: Types, Performance evaluation, Efficient system operation, Flow control strategies and energy conservation opportunities 6.1 Pump Types Pumps
More informationASSESSING PUMPING SYSTEM OPERATION FOR UPGRADING WORKS IN BUKIT KUDA WATER TREATMENT PLANT, LABUAN, MALAYSIA
ASSESSING PUMPING SYSTEM OPERATION FOR UPGRADING WORKS IN BUKIT KUDA WATER TREATMENT PLANT, LABUAN, MALAYSIA Ir Mohmad Asari Daud (HP: +60123733886) Prof Ir Megat Johari Megat Mohd Noor DS Dr Ir Zaini
More informationVSS S U B M E R S I B L E S E W A G E P U M P S
7 2 9 8 / 2 3 HP % % 64% 7 5 HP HP 5 HP % % C u r v e P a g e V S S - 4 5 R P M M O D E L : V S S - 4 E I M P E L L E R : V S A - 4 C - 2-5 A l s o a p p l i e s t o V S S - 5 E & V S S - 6 E 7 7 65 55
More informationPower Recovery Turbines
Power Recovery Turbines Fixed and Variable Geometry Vertical Horizontal Bulletin PS-90-1 (E/A4) Pump Supplier To The World Flowserve is the driving force in the global industrial pump marketplace. No other
More informationPUMPSENSE. Fluid Engineering Pvt. Ltd. Services for the users of Centrifugal Pumps
Fluid Engineering Pvt. Ltd Services for the users of Centrifugal Pumps Pump specification and pump selection services Training in centrifugal pumps Retrofit & pump upgrade services Diagnostics of problems
More informationPump ED 101. Pump Selection for VFD Operation Part 3 Q / H Pump Down vs Level Control. Introduction. Pump Down vs Level Control
Pump Selection for VFD Operation Part 3 Q / H Pump Down vs Level Control Joe Evans, Ph.D joeeevans@gmail.com Pump ED 101 http://www.pumped101.com Introduction In Part 2 we took a look at the pump selection
More informationVibration-Induced Fatigue Failure of Discharge Bottle Fitting Connections A Case Study
Vibration-Induced Fatigue Failure of Discharge Bottle Fitting Connections A Case Study By Ramin Rahnama Team Lead Wood Group Vibration, Dynamics & Noise (formerly BETA Machinery Analysis) Paul Crowther
More informationDEVELOPMENT AND TESTING OF THE GLENN EDWARDS DREDGE PUMPS
DEVELOPMENT AND TESTING OF THE GLENN EDWARDS DREDGE PUMPS L. Whitlock 1, R. Hagler 2, H. Schorr 3 and R. Visintainer 4 ABSTRACT Manson Construction Co. performs marine construction and dredging throughout
More informationFLUID FLOW - PUMPS. Discharge Section. Section. Two main types of pumps: Positive Displacement pumps Centrifugal pumps.
FLUID FLOW - PUMPS 4 3 Control valve Suction Section Discharge Section Two main types of pumps: Positive Displacement pumps Centrifugal pumps ChE 453 - Design I FLUID FLOW - PUMP PERFORMANCE Mechanical
More informationDIAGRAM FOR CALCULATING PIPE SIZES, DISCHARGE VELOCITIES AND LOSS OF HEAD IN STANDARD STEEL PIPE PIPE FRICTION LOSS CHART
DIAGRAM FOR CALCULATING PIPE SIZES, DISCHARGE VELOCITIES AND LOSS OF HEAD IN STANDARD STEEL PIPE PIPE FRICTION LOSS CHART (For Cast Iron and Concrete Pipes See Note at Right) Lay a straightedge on scales
More informationIntroduction of KHN rotating blade sand removal
Introduction of KHN rotating blade sand removal Cyclone sedimentation tank is mainly used for the pretreatment of sewage treatment plant (station), used for the removal of large inorganic particles in
More informationPump Performance Curves and Matching a Pump to a Piping System
Pump Performance Curves and Matching a Pump to a Piping System Fundamental Parameters Some fundamental parameters are used to analyze the performance of a pump Mass flow rate (Volumetric Flow rate in case
More informationPump Performance Curves and Matching a Pump to a Piping System
Pump Performance Curves and Matching a Pump to a Piping System Fundamental Parameters Some fundamental parameters are used to analyze the performance of a pump Mass flow rate (Volumetric Flow rate in case
More informationReducing Technical Risk Associated with Large Machinery Replacement or Retrofit Projects
Reducing Technical Risk Associated with Large Machinery Replacement or Retrofit Projects Eric Olson, Principal Engineer, Mechanical Solutions, Inc. Maki Onari, Principal Engineer, Mechanical Solutions,
More informationAftermarket Technical Service Solutions for Pumping Technologies
Aftermarket Technical Service Solutions for Pumping Technologies HIGH QUALITY OEM PARTS, SERVICE, REPAIR, UPGRADES + RE-RATES: DELIVERING VALUE FOR OUR CUSTOMERS SPX - An Introduction SPX is a Fortune
More informationSPECIFICATIONS - DETAILED PROVISIONS Section Horizontal Centrifugal Water Pumps C O N T E N T S
SPECIFICATIONS - DETAILED PROVISIONS Section 11931 - Horizontal Centrifugal Water Pumps C O N T E N T S PART 1 - GENERAL... 1 1.01 PUMP - GENERAL... 1 1.02 CERTIFIED PUMP CURVES... 1 1.03 NPSH REQUIREMENTS...
More informationExperimental and Finite Element Analysis of Base Frame for Rigidity
Experimental and Finite Element Analysis of Base Frame for Rigidity Amit V. Chavan Pg Student, Mechanical Engineering Department, R.I.T, Sakharale, Maharashtra, India amitchavan22@gmail.com S.S Gawade
More informationPublic Review Draft. BSR/ASHRAE/IES Addendum an to ANSI/ASHRAE/IES Standard
BSR/ASHRAE/IES Addendum an to ANSI/ASHRAE/IES Standard 90.1-2016 Public Review Draft Proposed Addendum an to Standard 90.1-2016, Energy Standard for Buildings Except Second Public Review (November 2018)
More informationVERTICAL TURBINE PUMPS
VERTICAL TURBINE PUMPS for the PETROLEUM INDUSTRY www.nationalpumpcompany.com API-610 Vertical Pumps Vertical turbine pumps that meet or exceed API 610 requirements. Since 1969, National Pump Company has
More informationMinerals. WARMAN Centrifugal Slurry Pumps WBV Vertical Cantilever Slurry Sump Pump Series
Minerals WARMAN Centrifugal Slurry Pumps WBV Vertical Cantilever Slurry Sump Pump Series The Warman WBV ultra heavy-duty range of vertical cantilevered slurry pumps sets a new industry benchmark for general
More informationSUGGESTED SPECIFICATIONS
SUGGESTED SPECIFICATIONS SERIES 3000 SUSPENDED, SCREENED WET-PIT PUMPS PART 1 GENERAL 1.1 DESCRIPTION Work Included: Under this section, the contractor shall provide all labor, equipment and material necessary
More informationHorizontal and Vertical End Suction Pumps
EN Horizontal and Vertical End Suction Pumps A range of versatile, energy efficient bearing frame pumps, suitable for horizontal or vertical mounting and incorporating the Hidrostal Screw Centrifugal Impeller.
More informationHWX. API OH3 Pump Bearing Frame. API OH4 Rigidly Coupled. API OH5 Close Coupled. API 610 Vertical In-Line Process Pumps.
API 6 Vertical In-Line Process Pumps API OH3 Pump Bearing Frame API OH4 Rigidly Coupled API OH5 Close Coupled Bulletin PS--27 (E) Pump Supplier To The World Flowserve is the driving force in the global
More informationTECHNICAL MANUAL TEH-375A. Pump & System Curve Data for Centrifugal Pump Selection and Application
TECHNICAL MANUAL TEH-375A Pump & System Curve Data for Centrifugal Pump Selection and Application TABLE OF CONTENTS Introduction... 3 Developing the Pump Curve... 3 Effect of Viscosity on the Pump Curve...
More informationWater & Wastewater Operation: Pipe Systems, System Curves, & Pump Curves
Water & Wastewater Operation: Pipe Systems, System Curves, & Pump Curves Matt Prosoli PumpsPlus Inc. 30 Years in Water & Wastewater BA in Marketing, Michigan State Univ. MWEA Maintenance Committee 30 years
More informationDesign and Analysis of Tiltable Truck Cabin Floor
Design and Analysis of Tiltable Truck Cabin Floor D. Murali Krishna 1, Dr. S. Madhu 2 M.Tech Student, Department of Mechanical Engineering, MLRIT, R.R. dist, T.S., India. Professor and Head of the Department
More informationSECTION VIBRATION CONTROLS FOR HVAC PIPING AND EQUIPMENT
Page 230548-1 SECTION 230548 - PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections,
More informationANALYSIS OF THE DYNAMIC STIFFNESS OF A CENTRIFUGAL PUMP BY ODS
The 21 st International Congress on Sound and Vibration 13-17 July, 2014, Beijing/China ANALYSIS OF THE DYNAMIC STIFFNESS OF A CENTRIFUGAL PUMP BY ODS Karllyammo Lennon de Souza, Fabíola Fernandes da Silveira,
More informationTurbo Machines Pumps and Turbines ME 268
Turbo Machines Pumps and Turbines ME 268 Turbo Machines Turbo machines are dynamic fluid machines that either extract energy from a fluid (turbine) or add energy to a fluid (pump) as a result of dynamic
More informationMechanical vibration Evaluation of machine vibration by measurements on non-rotating parts. Part 8: Reciprocating compressor systems
Provläsningsexemplar / Preview INTERNATIONAL STANDARD ISO 10816-8 First edition 2014-07-01 Mechanical vibration Evaluation of machine vibration by measurements on non-rotating parts Part 8: Reciprocating
More informationPUMPS & PUMPING SYSTEMS
PUMPS & PUMPING SYSTEMS 1. INTRODUCTION...1 2. TYPE OF PUMPS...5 3. ASSESSMENT OF PUMPS...9 4. ENERGY EFFICIENCY OPPORTUNITIES...10 5. OPTION CHECKLIST...16 6. WORKSHEETS...17 7. REFERENCES...19 1. INTRODUCTION
More informationVSX TECHNICAL BROCHURE
VSX TECHNICAL BROCHURE B-476E You said you needed one pump that does it all. VSC Only the VSX platform offers so many piping installation configurations, thanks to its revolutionary design. Utilizing CFD
More informationNorwood High Service Pump Replacement
T E C H N I C A L M E M O R A N D U M 737-02 NORWOOD HIGH SERVICE PUMP REPLACEMENT 737-02 Norwood High Service Pump Replacement PREPARED FOR: JEA Planning PREPARED BY: Joshua M. Brown DATE: February 2017
More informationEngineering Capabilities for Vertical Products
Engineering Capabilities for Vertical Products Goulds Vertical Pumps. Designed To Perform. Proven To Last. ITT custom hydraulic designs are featured on our large vertical circulating water pumps. ITT,
More informationPUMPS FOR INDUSTRY. The Vertical Pump Specialists CONTENTS: Introduction & User List. Product Overview. Vertical Process Pumps...
PUMPS FOR INDUSTRY CONTENTS: The Vertical Pump Specialists Introduction & User List Product Overview Vertical Process Pumps... Series 600 Vertical Sewage Pumps... Series 700 Vertical Sump Pumps... Series
More informationCombiSump. Vertical long shaft sump pump, according to ISO 2858, EN 733, API 610 (VS4)
CombiSump Vertical long shaft sump pump, according to ISO 2858, EN 33, API 6 (VS4) Johnson Pump, An SPX FLOW Brand CombiSump SPX FLOW develops, manufactures and markets Johnson Pump branded positive displacement
More informationCUP-CVP CONCRETE VOLUTE COOLING WATER PUMP
CUP-CVP CONCRETE VOLUTE COOLING WATER PUMP SPX - An introduction SPX is a Fortune 500 multi-industry manufacturing leader, headquartered in Charlotte, North Carolina. SPX manufactures and markets products,
More informationCustomer-specific pump engineering
ANDRITZ Vertical volute pumps www.andritz.com Customer-specific pump engineering Solutions for customer needs For over 100 years, ANDRITZ has been a byword for competence and innovation in building centrifugal
More informationEFFECT OF INTAKE MAINTENANCE ON PUMP RELIABILITY AND PERFORMANCE
Eleventh International Water Technology Conference, IWTC11 2007 Sharm El-Sheikh, Egypt 527 EFFECT OF INTAKE MAINTENANCE ON PUMP RELIABILITY AND PERFORMANCE S. M. Abdel-Rahman, M. A. Younes and S. A. Abdel-Ghany
More informationDEPARTMENT OF CIVIL ENGINEERING CE6403/ APPLIED HYDRAULIC ENGINEERING QUESTION BANK TWO MARKS UNIT I UNIFORM FLOW 1. Differentiate open channel flow from pipe flow. 2. What is specific energy and is the
More informationspecial needs surface trajectory costs. High Efficiency 3. 4.
Aire-O2 Turbo Aerator Superior Surface Aeration Technology y. surface aerators were developed for the special needs of the pulp and paper industry, food processors, the petrochemical industry and municipalities.
More informationCLASSIFICATION NOTES. Type Approval. Mechanical Joints. used in Piping
CLASSIFICATION NOTES Type Approval of Mechanical Joints used in Piping Revision 2 : January, 2014 Contents Sections 1. General 2. Scope 3. Documentation 4. Materials 5. Testing Procedure and Requirements
More informationN N O V A T I O N E F F I C I E N C Y Q U A L I T Y VTG. Vertical Turbine Generator
N N O V A T I O N E F F I C I E N C Y Q U A L I T Y VTG For more than 60 years the name Ruhrpumpen has been synonymous worldwide with innovation and reliability for pumping technology Ruhrpumpen is an
More informationThis document is a preview generated by EVS
INTERNATIONAL STANDARD ISO 10816-21 First edition 2015-05-01 Mechanical vibration Evaluation of machine vibration by measurements on non-rotating parts Part 21: Horizontal axis wind turbines with gearbox
More informationSubmerged Motor LNG Pumps In Send-Out System Service. Unique pumps for unique duty...
A pump is a pump, right? Not exactly, given all the variations on the theme. Take, for example those pumps primarily used for transfer of liquefied natural gas (LNG) and other liquefied gases. They re
More informationMcDuff WTP High Service Pump Replacement
T E C H N I C A L M E M O R A N D U M 642-03 MCDUFF WTP HIGH SERVICE PUMP REPLACEMENT 642-03 McDuff WTP High Service Pump Replacement PREPARED FOR: PREPARED BY: Capital Budget Planning Craig Jones DATE:
More informationFINAL Examination Paper (COVER PAGE) Programme : Diploma in Mechanical Engineering. Time : 8.00 am am Reading Time : 10 Minutes
Session : May 2013 FINAL Examination Paper (COVER PAGE) Programme : Diploma in Mechanical Engineering Course : EGR2180 : FLUIDS MECHANICS 2 Date of Examination : July 25, 2013 Time : 8.00 am 10.10 am Reading
More informationVane Pump Test Rig. Narhe, Pune, Maharashtra, )
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-issn: 2278-1684,p-ISSN: 2320-334X, Volume 12, Issue 5 Ver. III (Sep. - Oct. 2015), PP 24-33 www.iosrjournals.org Vane Pump Test Rig Nilesh
More informationnhc EARTH TECH CANADA INC. CITY OF WINNIPEG NORTH END WATER POLLUTION CONTROL CENTRE PUMP STATION MODEL TEST FINAL REPORT JANUARY 2005
EARTH TECH CANADA INC. CITY OF WINNIPEG NORTH END WATER POLLUTION CONTROL CENTRE PUMP STATION MODEL TEST FINAL REPORT JANUARY 2005 nhc northwest hydraulic consultants CITY OF WINNIPEG NORTH END WATER POLLUTION
More informationExamine Pump, Process & Control Elements to Solve Fluid Piping System Problems
Examine Pump, Process & Control Elements to Solve Fluid Piping System Problems by Ray Hardee My past Pumps & Systems columns (read them here) have dealt with using basic engineering principles to better
More informationFAIRBANKS NIJHUIS VERTICAL TURBINE PUMP. TYPE VDL/VDF
FAIRBANKS NIJHUIS VERTICAL TURBINE PUMP TYPE VDL/VDF www.fairbanksnijhuis.com PENTAIR S FAIRBANKS NIJHUIS VertIcal Turbine pumps Intake Sump Configurations Vertical turbine pumps are available in customized
More informationWater and wastewater treatment operations
The Search for Energy Savings: Optimization of Existing & New Pumping Stations Chris Reinbold and Vincent Hart Water and wastewater treatment operations account for 30 to 50 percent of all municipal power
More information