Flow Of Fluids Through Piping Systems , Valves And Pumps
Last updated 11/2022
MP4 | Video: h264, 1280x720 | Audio: AAC, 44.1 KHz
Language: English | Size: 2.85 GB | Duration: 7h 4m
Last updated 11/2022
MP4 | Video: h264, 1280x720 | Audio: AAC, 44.1 KHz
Language: English | Size: 2.85 GB | Duration: 7h 4m
Learn to size valves & piping systems, calculate pressure drop, flow of liquids & gases through pipe , fittings & valves
What you'll learn
Understand the main physical properties of fluids (viscosity, vapor pressure, specific gravity, weight density…)
Understand the theory of flow in pipe : Laminar vs Turbulent flow
Understand and learn how to use the Bernoulli Theorem for pressure drop, head loss or flow velocity assessment
Learn how to calculate the pressure drop "dP" and the head loss "hL" through any piping system
Learn how to determine the friction factor "f" of any piping system
Learn how to calculate the flow of compressible and incompressible fluids in pipe
Learn how to calculate the resistance coefficient "K" of any piping component (pipes, valves, bends, reducers, Tees, Wyes…)
Learn what the flow coefficient "Cv" of a control valve means and how to use it in assessing flows and pressure drops
Know what a control valve is and its main components
Understand the theory of regulating flow with control valves
Understand the concepts of cavitation and choking in control valves through graphics and 3D animations
Learn how to size and select a control valve when designing and operating any piping system for both gases and liquids
Understand the theory of flow measurement using differential pressure meters such as Orifice Plates, Flow Nozzles and Venturi Meters
Learn how to calculate the flow of compressible and incompressible fluids through Orifice Plates, Flow Nozzles and Venturi Meters
Learn how to size and select a flow meter when designing and operating any piping system for both gases and liquids
Requirements
Some engineering or field knowledge is preferable but not mandatory. All the concepts are explained in depth using an easy to understand language to allow students to build their knowledge from the ground up
Having attended our "Flow of Fluids Excel Workbook" training course is a plus but not mandatory
Having attended our "Piping Systems : Drafting & Design" training course is a plus but not mandatory
Having attended our "Valves : Principles, Operation & Design" training course is a plus but not mandatory
Description
Dear students,The most diverse substances are transported and distributed in piping systems every single day. They include aggressive fluids in the chemical industry, hydrocarbons in petrochemistry or steam for energy transmission.Chemical engineers who are designing these piping systems and specifying associated equipment like valves, pumps and flow meters probably face more fluid flow problems than any other. Pressure drop calculations help the engineer size pipes and ducts, determine performance requirements for pumps and fans, and specify control valves and flow meters. And although the underlying theory is rather simple, its practical application can be confusing due to the empirical nature of important correlations, multiple methods for expressing parameters, many variable inputs, and alternative units of measurement.Designed around a series of practical examples which we work through to a solution, this unique training course is an essential guide to understanding the flow of fluids through pipe, valves and fittings. This understanding is a prerequisite for a successful design & flawless operation of your plant and piping system.The course features 5 major items :1- An in-depth information on physical properties of fluids (weight density, specific gravity, viscosity, vapor pressure…) and how to calculate them using Flow of Fluids Excel Workbook*2- An in-depth information on compressible and incompressible fluid flow through piping systems, valves, pumps & flow meter devices (Orifice plates, Flow Nozzles & Venturi Meters) and how to calculate them using Flow of Fluids Excel Workbook*3- An iterative method for sizing flow meters and valves4- An in-depth discussion on cavitation and choking in control valves5- A flow problem section with 25 concrete examples to help you practice and reinforce your understandingMany images, equations, graphs, 3D animations and solved flow problems can be found throughout, increasing the value of this course as an educational tool and industrial reference for personnel involved in the fluid handling industries.So this course is not only of use to practising and professional engineers to whom a knowledge of the behavior of fluids is of crucial importance in cost-effective design and efficient operation of process plants and piping systems but also intended as a study guide for undergraduates in process, chemical, petrochemical & petroleum engineering disciplines.So with no further ado, check out the free preview videos and the curriculum of the course and we look forward to seeing you in the first section.Hope to see you thereWR TrainingSpread the wings of your knowledge* The Flow of Fluids Excel Workbook is NOT included in this course and is sold separately. If you are interested in this product, it is also available on Udemy as well but as a private course material. So you need first to request it from us through Udemy inbox or through the Q&A section and we'll send you a private link to download the file.–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––IMPORTANT NOTE : ABOUT FLOW OF FLUIDS EXCEL WORKBOOK*To accompany this course and help you assess flow of fluids, calculate pressure drops, size pipes, control valves and flow meter devices, WR Training has developed an Excel VBA based engineering tool : Flow of Fluids Excel Workbook*.* The Flow of Fluids Excel Workbook is NOT included in this course and is sold separately. If you are interested in this product, it is also available on Udemy as well but as a private course material. So you need first to request it from us through Udemy inbox or through the Q&A section and we'll send you a private link to download the file.Flow of Fluids Excel Workbook* simulates the operation of small piping systems transporting liquids and industrial gases under a variety of operating conditions.Flow of Fluids Excel Workbook* is based on industry recognized principles and standards from ASME, HI, IEC, AWWA, ISA, and ANSI…Flow of Fluids Excel Workbook* is easy-to-use and has a highly intuitive user interface.Flow of Fluids Excel Workbook* presents formulas and data for :1. Physical properties determination for a variety of fluids (specific gravity, viscosity, vapor pressure…)2. Pressure drop and head loss calculations through pipes, fittings and valves3. Flow calculations for incompressible and compressible fluids through piping systems, fittings, valves and pumps4. Sizing piping systems for incompressible and compressible fluids5. Flow resistance coefficients calculations for pipes, fittings and valves6. Flow calculations for incompressible and compressible fluids through flow meters (Orifice Plates, Nozzles and Venturi meters)7. Centrifugal pump calculation (Pump head, NPSH, Specific speed, affinity laws…)8. Converting variables and process parameters to a numerious alternative units of measurement* The Flow of Fluids Excel Workbook is NOT included in this course and is sold separately. If you are interested in this product, it is also available on Udemy as well but as a private course material. So you need first to request it from us through Udemy inbox or through the Q&A section and we'll send you a private link to download the file.–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––-FLOW OF FLUIDS EXCEL WORKBOOK* : TABLE OF CONTENTAn Excel VBA based engineering tool by WR Training* The Flow of Fluids Excel Workbook is NOT included in this course and is sold separately. If you are interested in this product, it is also available on Udemy as well but as a private course material. So you need first to request it from us through Udemy inbox or through the Q&A section and we'll send you a private link to download the file.A. PHYSICAL PROPERTIES OF FLUIDS 1 PROPERTIES OF WATER AND STEAM a. SATURATION PROPERTIES WITH TEMPERATURE b. SATURATION PROPERTIES WITH PRESSURE c. PROPERTIES GIVEN PRESSURE AND TEMPERATURE d. PROPERTIES GIVEN PRESSURE AND ENTHALPY 2 DYNAMIC VISCOSITY OF GASES 3 KINEMATIC VISCOSITY 4 WEIGHT DENSITY OF LIQUIDS a. FORMULA 1 b. FORMULA 2 c. FORMULA 3 5 SPECIFIC GRAVITY OF LIQUIDS a. FORMULA 1 b. FORMULA 2 6 SPECIFIC GRAVITY - DEG API 7 SPECIFIC GRAVITY - DEG BEAUME 8 SPECIFIC VOLUME 9 WEIGHT DENSITY OF IDEAL GASES 10 WEIGHT DENSITY OF REAL GASES 11 GAS COMPRESSIBILITY FACTOR 12 SPECIFIC GRAVITY OF GASES 13 BOILING POINT PURE COMPONENT 14 VAPOR PRESSURE : PURE COMPONENT 15 VAPOR PRESSURE : MIXTURE B. NATURE OF FLOW IN PIPE 1 RATE OF FLOW AT FLOWING CONDITION a. FORMULA 1 b. FORMULA 2 2 RATE OF FLOW (gpm) a. FORMULA 1 b. FORMULA 2 c. FORMULA 3 3 MEAN VELOCITY OF FLOW IN PIPE a. FORMULA 1 b. FORMULA 2 c. FORMULA 3 4 REYNOLDS NUMBER a. FORMULA 1 b. FORMULA 2 c. FORMULA 3 d. FORMULA 4 e. FORMULA 5 f. FORMULA 6 g. FORMULA 7 C. BERNOULLI'S THEOREM 1 TOTAL HEAD OR FLUID ENERGY 2 LOSS OF STATIC PRESSURE HEAD (hL) DUE TO FLUID FLOW D. HEAD LOSS, PRESSURE DROP AND FRICTION FACTOR THROUGH PIPE 1 LOSS OF STATIC PRESSURE HEAD a. FORMULA 1 b. FORMULA 2 c. FORMULA 3 d. FORMULA 4 e. FORMULA 5 f. FORMULA 6 2 PIPE PRESSURE DROP a. FORMULA 1 b. FORMULA 2 c. FORMULA 3 d. FORMULA 4 e. FORMULA 5 f. FORMULA 6 g. FORMULA 7 3 PRESSURE DROP FOR LAMINAR FLOW ACCORDING TO POISEUILLE'S LAW 4 PRESSURE DROP FOR TURBULENT FLOW ACCORDING TO HAZEN-WILLIAMS FORMULA 5 FRICTION FACTOR FOR LAMINAR FLOW 6 FRICTION FACTOR FOR TURBULENT FLOW a. COLEBROOK EQUATION b. SERGHIDE EQUATION c. SWAMEE-JAIN EQUATION E. GAS CALCULATIONS 1 PERFECT GAS LAW a. DETERMINING THE NUMBER OF MOLES OF A PERFECT GAS b. DETERMINING THE PRESSURE OF A PERFECT GAS c. DETERMINING THE TEMPERATURE OF A PERFECT GAS d. DETERMINING THE VOLUME OF A PERFECT GAS 2 NON-IDEAL GAS LAW a. DETERMINING THE NUMBER OF MOLES OF A NON-IDEAL GAS b. DETERMINING THE PRESSURE OF A NON-IDEAL GAS c. DETERMINING THE TEMPERATURE OF A NON-IDEAL GAS d. DETERMINING THE VOLUME OF A NON-IDEAL GAS 3 STANDARD ◄►ACTUAL GAS FLOW F. COMPRESSIBLE FLOW IN STRAIGHT HORIZONTAL PIPELINE 1 COMPLETE ISOTHERMAL EQUATION G. GAS PIPELINES : MASS FLOW RATE EQUATION H. HORIZONTAL GAS PIPELINES : STANDARD VOLUMETRIC FLOW RATE EQUATIONS 1 GENERAL STANDARD VOLUMETRIC FLOW RATE 2 WEYMOUTH STANDARD VOLUMETRIC FLOW RATE EQUATION FOR SIZING HORIZONTAL GAS PIPELINES IN FULLY TURBULENT FLOW 3 PANHANDLE "A" STANDARD VOLUMETRIC FLOW RATE EQUATION FOR SIZING HORIZONTAL GAS PIPELINES IN PARTIALLY TURBULENT FLOW 4 PANHANDLE "B" STANDARD VOLUMETRIC FLOW RATE EQUATION FOR SIZING HORIZONTAL GAS PIPELINES IN FULLY TURBULENT FLOW I. ELEVATED GAS PIPELINES : STANDARD VOLUMETRIC FLOW RATE EQUATION J. LIQUID FLOW THROUGH ORIFICES K. LIQUID FLOW THROUGH ISA 1932 NOZZLES L. LIQUID FLOW THROUGH LONG RADIUS NOZZLES M. LIQUID FLOW THROUGH VENTURI NOZZLES N. LIQUID FLOW THROUGH VENTURI METERS O. GAS FLOW THROUGH ORIFICES P. GAS FLOW THROUGH ISA 1932 NOZZLES Q. GAS FLOW THROUGH LONG RADIUS NOZZLES R. GAS FLOW THROUGH VENTURI NOZZLES S. GAS FLOW THROUGH VENTURI METERS T. RESISTANCE COEFFICIENT FOR PIPES, VALVES AND FITTINGS 1 CONTRACTION 2 ENLARGEMENT 3 GATE VALVES 4 GLOBE AND ANGLE VALVES 5 SWING CHECK VALVES 6 LIFT CHECK VALVES 7 TILTING DISC CHECK VALVES 8 STOP CHECK VALVES 9 FOOT VALVES WITH STRAINER 10 BALL VALVES 11 BUTTERFLY VALVES 12 DIAPHRAGM VALVES 13 PLUG VALVES 14 MITRE BENDS 15 90° PIPE BEND AND FLANGED OR BW 90° ELBOWS 16 MULTIPLE 90° PIPE BENDS 17 CLOSE PATTERN RETURN BENDS 18 STANDARD ELBOWS 19 PIPE ENTRANCE 20 PIPE EXIT 21 TEES AND WYES - CONVERGING FLOW 22 TEES AND WYES - DIVERGING FLOW 23 ORIFICES, NOZZLES AND VENTURIS U. HEAD LOSS AND PRESSURE DROP THROUGH VALVES AND FITTINGS 1 LOSS OF STATIC PRESSURE HEAD a. FORMULA 1 b. FORMULA 2 c. FORMULA 3 2 PIPE PRESSURE DROP a. FORMULA 1 b. FORMULA 2 c. FORMULA 3 V. FLOW OF FLUIDS THROUGH VALVES, FITTINGS AND PIPE 1 LIQUID FLOW THROUGH A VALVE, FITTINGS AND PIPE a. FORMULA 1 b. FORMULA 2 c. FORMULA 3 d. FORMULA 4 e. FORMULA 5 f. FORMULA 6 g. FORMULA 7 2 GAS FLOW THROUGH A VALVE; FITTINGS AND PIPE a. FORMULA 1 b. FORMULA 2 c. FORMULA 3 3 VALVE FLOW COEFFICIENT "Cv" a. FORMULA 1 b. FORMULA 2 4 VALVE RESISTANCE COEFFICIENT "K" W. CALCULATIONS FOR CENTRIFUGAL PUMP 1 PUMP HEAD a. HEAD FORMULA b. PUMP IN SUCTION HEAD c. PUMP IN SUCTION LIFT 2 PUMP DISCHARGE PRESSURE 3 NET POSITIVE SUCTION HEAD REQUIRED 4 NET POSITIVE SUCTION HEAD AVAILABLE 5 TOTAL DYNAMIC HEAD 6 SUCTION SPECIFIC SPEED (Nss) 7 SPECIFIC SPEED (Ns) X. PUMP AFFINITY LAWS 1 IMPACT OF SPEED ON FLOW 2 IMPACT OF SPEED ON HEAD 3 IMPACT OF SPEED ON BHP 4 IMPACT OF IMPELLER DIAMETER ON FLOW 5 IMPACT OF IMPELLER DIAMETER ON HEAD 6 IMPACT OF IMPELLER DIAMETER ON BHP 7 PUMP BRAKE HORSPOWER 8 PUMP EFFICIENCY Y. FLOW OF WATER THROUGH SCHEDULE 40 STEEL PIPE 1 CALCULATIONS FOR PIPE OTHER THAN SCHEDULE 40 Z. FLOW OF AIR THROUGH SCHEDULE 40 STEEL PIPE 1 CALCULATIONS FOR PIPE OTHER THAN SCHEDULE 40 2 CALCULATIONS FOR OTHER SET OF TEMPERATURE AND PRESSURE 3 FROM STANDARD TO ACTUAL VOLUME FLOW ZZ. CONVERSION TABLES 1 LENGTH 2 AREA 3 VOLUME 4 VELOCITY 5 MASS 6 MASS FLOW RATE 7 VOLUMETRIC FLOW RATE 8 FORCE 9 PRESSURE AND LIQUID HEAD 10 ENERGY, WORK AND HEAT 11 POWER 12 WEIGHT DENSITY 13 TEMPERATURE 14 DYNAMIC VISCOSITY 15 KINEMATIC VISCOSITY * The Flow of Fluids Excel Workbook is NOT included in this course and is sold separately. If you are interested in this product, it is also available on Udemy as well but as a private course material. So you need first to request it from us through Udemy inbox or through the Q&A section and we'll send you a private link to download the file.DISCLAIMERThis software is provided by WR Training "as is" and any express or implied warranties, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose are disclaimed. In no event shall the Copyright owner or contributors be liable for any direct, indirect, incidental, special, exemplary, or consequential damages (including, but not limited to, procurement of substitute goods or services, loss of use, data, or profits, or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the use of this software, even if advised of the possibility of such damage.
Overview
Section 1: ABOUT THE COURSE
Lecture 1 Introduction
Lecture 2 About Flow Of Fluids Excel Workbook
Lecture 3 Before you start this course
Section 2: PHYSICAL PROPERTIES OF FLUIDS
Lecture 4 Introduction
Lecture 5 Viscosity
Lecture 6 Kinematic viscosity
Lecture 7 PRACTICE SESSION : Determining viscosity using Flow of Fluids Excel Workbook
Lecture 8 Weight density of liquids
Lecture 9 PRACTICE SESSION : Weight density of liquids using Flow of Fluids Excel Workbook
Lecture 10 Specific volume
Lecture 11 Weight density of gases and vapors
Lecture 12 PRACTICE SESSION : Weight density of gases using Flow of Fluids Excel Workbook
Lecture 13 Specific gravity
Lecture 14 PRACTICE SESSION : Specific gravity using Flow of Fluids Excel Workbook
Lecture 15 Vapor pressure
Lecture 16 PRACTICE SESSION: Determining vapor pressure using Flow of Fluids Excel Workbook
Lecture 17 More charts and diagrams - The Chemical Engineer's Reference Folder
Section 3: NATURE OF FLOW IN PIPE : LAMINAR AND TURBULENT FLOW
Lecture 18 Introduction
Lecture 19 Mean velocity of flow
Lecture 20 PRACTICE SESSION : Velocity of flow using Flow of Fluids Excel Workbook
Lecture 21 Reynolds number (Re)
Lecture 22 PRACTICE SESSION : Reynolds number using Flow of Fluids Excel Workbook
Section 4: BERNOULLI'S THEOREM
Lecture 23 Bernoulli's theorem
Section 5: MEASUREMENT OF PRESSURE
Lecture 24 Measurement of pressure
Section 6: HEAD LOSS AND PRESSURE DROP THROUGH PIPE
Lecture 25 Introduction
Lecture 26 Friction factor
Lecture 27 Friction factor using the Colebrook equation
Lecture 28 Explicit approximations of Colebrook
Lecture 29 PRACTICE SESSION: Friction factor using Flow of Fluids Excel Workbook
Lecture 30 Hazen-Williams formula for flow of water
Lecture 31 PRACTICE SESSION: Hazen-Williams using Flow of Fluids Excel Workbook
Lecture 32 Effect of age and use on pipe friction
Section 7: COMPRESSIBLE FLOW IN PIPE
Lecture 33 Introduction
Lecture 34 Definition of a perfect gas
Lecture 35 Speed of sound and Mach number
Lecture 36 Approaches to compressible flow problems
Lecture 37 Application of the Darcy equation to compressible fluids
Lecture 38 Complete isothermal equation
Lecture 39 Simplified isothermal gas pipeline equation
Lecture 40 Other commonly used equations for compressible flow in long pipelines
Lecture 41 Comparison of equations for compressible flow in pipelines
Lecture 42 Modifications to the isothermal flow equation
Lecture 43 Limiting flow of gases and vapors
Lecture 44 PRACTICE SESSION: Expansion factor "Y" & ∆P using Flow of Fluids Excel Workbook
Section 8: FLOW OF FLUIDS THROUGH VALVES AND FITTINGS
Lecture 45 Introduction
Lecture 46 Types of valves used in piping systems
Lecture 47 Types of fittings used in piping systems
Lecture 48 Pressure drop attributed to valves and fittings
Lecture 49 Relationship of pressure drop to velocity of flow
Lecture 50 Hydraulic resistance
Lecture 51 Causes of head loss in valves and fittings
Lecture 52 Equivalent length "L/D"
Lecture 53 Resistance coefficient "K"
Lecture 54 Resistance coef. K for pipelines, valves and fittings in series and in parallel
Lecture 55 Flow coefficient "Cv"
Lecture 56 Use of flow coefficient "Cv" for piping and components
Lecture 57 Flow coefficient Cv for pipelines, valves and fittings in series and in parallel
Lecture 58 Laminar flow conditions
Lecture 59 Contraction and enlargement
Lecture 60 PRACTICE SESSION: Contraction & enlargement using Flow of Fluids Excel Workbook
Lecture 61 Valves with reduced seats
Lecture 62 PRACTICE SESSION: Valve resistance coef. "K" using Flow of Fluids Excel Workbook
Lecture 63 Resistance of bends
Lecture 64 PRACTICE SESSION: Resistance of bends using Flow of Fluids Excel Workbook
Lecture 65 Hydraulic resistance of Tees and Wyes
Lecture 66 Hydraulic resistance of Tees and Wyes : Converging flow
Lecture 67 Hydraulic resistance of Tees and Wyes : Diverging flow
Lecture 68 PRACTICE SESSION: Resistance of "T" and "Y" using Flow of Fluids Excel Workbook
Lecture 69 Discharge of fluids through valves, fittings and pipe
Section 9: REGULATING FLOW WITH CONTROL VALVES
Lecture 70 Introduction
Lecture 71 Valve components
Lecture 72 Inherent characteristic curve
Lecture 73 Installed characteristic curve
Lecture 74 Pressure, Velocity and Energy profiles through a control valve
Lecture 75 Cavitation, Choked Flow and Flashing
Lecture 76 Sizing and selection
Lecture 77 Sizing for INcompressible flow
Lecture 78 Sizing for compressible flow
Lecture 79 Conversion of Cv to Kv
Section 10: MEASURING FLOW WITH DIFFERENTIAL PRESSURE METERS
Lecture 80 Introduction
Lecture 81 Orifices, Nozzles and Venturi Tubes
Lecture 82 Orifice plate
Lecture 83 Limits of use of orifice plates
Lecture 84 Flow nozzle
Lecture 85 Limits of use of flow nozzles
Lecture 86 Venturi meter
Lecture 87 Limits of use of Venturi meters
Section 11: LIQUID FLOW THROUGH ORIFICES, NOZZLES AND VENTURI
Lecture 88 Introduction
Lecture 89 Differential pressure and pressure loss
Lecture 90 Pressure loss coefficient
Lecture 91 Rate of flow and flow coefficient "C"
Lecture 92 Discharge coefficient "Cd" : Definition
Lecture 93 Discharge coefficient "Cd" : Orifice plates
Lecture 94 Discharge coefficient "Cd" : Flow nozzles
Lecture 95 Discharge coefficient "Cd" : Venturi meters
Lecture 96 PRACTICE SESSION: Discharge coefficient "Cd" using flow of fluids excel workbook
Section 12: COMPRESSIBLE FLOW THROUGH ORIFICES, NOZZLES AND VENTURI
Lecture 97 Flow of gases and Net Expansibility Factor "Y"
Section 13: DOWNLOADABLE RESOURCES
Lecture 98 Downloadable resources
Section 14: FLOW PROBLEMS - LET'S GET SOME PRACTICE !!!
Lecture 99 About this flow problems section
Lecture 100 Example #1 : Determining Reynolds Number (Re) and Friction Factor (f)
Lecture 101 Example #2 : Y pattern valve resistance coefficient & equivalent lengths
Lecture 102 Example #3 : Globe valve resistance K, equivalent lengths & flow coefficient Cv
Lecture 103 Example #4 : Gate valve resistance coef. "K" & equivalent lengths "L/D" & "L"
Lecture 104 Example #5 : Sizing lift check valves
Lecture 105 Example #6 : Fluid velocity and rate of discharge through a ball valve
Lecture 106 Example #7 : Laminar flow in valves, fittings and pipe #1
Lecture 107 Example #8 : Laminar flow in valves, fittings and pipe #2
Lecture 108 Example #9 : Determining pressure drop in a piping system
Lecture 109 Example #10 : Sizing an orifice for a given pressure drop and fluid velocity
Lecture 110 Example #11 : Bernoulli's Theorem - Pressure drop and fluid velocity
Lecture 111 Example #12 : Process air - Pressure drop and velocity
Lecture 112 Example #13 : Sizing a centrifugal pump for oil pipelines
Lecture 113 Example #14 : Flow of natural gas through pipelines
Lecture 114 Example #15 : Water discharging from a reservoir
Lecture 115 Example #16 : Gas flow at sonic velocity through pipe
Lecture 116 Bonus
Chemical, Process, Petroleum Engineers,Design Engineers,Piping Engineers,Plant Engineers,Facility Managers,Maintenance Technicians,Mechanics,Plant Operators,Safety Engineers,Recent College Graduates