Engineering Fundamentals

In-depth guides explaining the theory, equations, and standards behind pipeline and gas processing calculations.

Most Popular Fundamentals

Showing all fundamentals

Pipeline Design

Pressure design, stress analysis, and hydraulic calculations for pipeline systems

Hoop Stress

Circumferential stress calculations per ASME B31.8 for pipeline pressure design.

MAOP Calculation

Maximum Allowable Operating Pressure per DOT CFR 192 and ASME B31.8.

Pipeline Hydraulics

Pressure drop, flow equations, and hydraulic gradient calculations.

Line Sizing

Pipe diameter selection based on velocity, pressure drop, and erosion limits.

Bending Stress

Beam bending and combined stress analysis for buried and aboveground pipelines.

External Loading

Soil loads, traffic loads, and buoyancy effects on buried pipelines.

Pipe Stress Analysis

Flexibility analysis, allowable stress criteria, pipe supports, and nozzle loads per ASME B31.3.

Percent SMYS

Specified Minimum Yield Strength calculations for pipeline design per B31.8.

Pressure Ratings

ANSI flange pressure-temperature ratings and material class selection.

Pipeline Buoyancy

Buoyancy control weights and anchoring for submerged pipelines.

Pig Speed

Pipeline pig velocity calculations and speed control considerations.

Hot Tapping

Live pipeline connections and hot tap flow calculations.

Pipe Flow Area

Cross-sectional area calculations for various pipe schedules.

Pipe Volume

Pipeline volume and capacity calculations for hydrotesting and purging.

Pipe Weight

Pipe weight per foot calculations for various schedules and materials.

Buoyancy Calculation

Pipeline buoyancy and negative buoyancy weight calculations.

Hot Tap Welding

Live pipeline welding procedures and safety requirements.

Liquid Line Sizing

Liquid pipeline diameter selection for velocity and pressure drop.

Slug Catcher Design

Finger-type and vessel-type slug catcher sizing for terrain, pigging, and ramp-up slugs.

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B31G Remaining Strength Fundamentals

ASME B31G corrosion assessment methodology, Folias factor, RSTRENG, and pipeline integrity management

B31 Pipe Wall Thickness Fundamentals | Pressure Design Engineering Guide

B31 pipe wall thickness fundamentals: ASME B31.3 process piping, B31.4 liquid transportation, B31.8 gas transmission ...

Expansion Loop Fundamentals | Piping Flexibility Engineering Guide

Expansion loop fundamentals for pipeline and process engineers.

HDD Pullback Force Fundamentals | Horizontal Directional Drilling Guide

HDD pullback force fundamentals for pipeline engineers.

Pipe Support Span Design Fundamentals | Engineering Guide

Pipe support span design fundamentals: weight calculations, beam formulas, deflection limits (L/240), stress limits p...

Pipeline Crossing Fundamentals | Road, Rail & River Crossing Design Guide

Pipeline crossing fundamentals for pipeline and civil engineers.

Pipeline Stress Fundamentals | Longitudinal & Combined Stress Guide

Pipeline longitudinal stress fundamentals for gas transmission and liquid pipeline engineers.

Sand & Erosional Velocity Fundamentals | Pipeline Erosion Engineering Guide

Sand and erosional velocity fundamentals for pipeline engineers.

Seismic Design Fundamentals | Pipeline Earthquake Engineering Guide

Pipeline seismic design fundamentals for engineers.

Spring Hanger Fundamentals | Pipe Support Engineering Guide

Spring hanger fundamentals for piping and mechanical engineers.

Water Hammer & Surge Fundamentals

Joukowski equation, wave speed, surge pressure analysis, and transient protection strategies.

Friction Factor & Moody Diagram Fundamentals

Colebrook-White equation, Swamee-Jain approximation, Churchill formula, and Moody chart interpretation.

Liquid Hydraulic Gradient Fundamentals

HGL profiling, slack flow detection, elevation effects, and liquid pipeline pressure analysis.

Telescoping Pipe Design Fundamentals

Multi-diameter pipeline optimization, transition losses, and cost-effective pipe sizing strategies.

Grade Tapering Fundamentals

Steel grade optimization along pressure profile per ASME B31.4 and B31.8 for weight and cost savings.

Liquid Pipeline Hydraulics Fundamentals

Darcy-Weisbach and Hazen-Williams equations for liquid pipeline pressure drop and flow capacity.

Pump Station Spacing Fundamentals

Hydraulic gradient analysis, station placement, NPSH requirements, and economic optimization.

Injection & Stripping Point Hydraulics Fundamentals

Midpoint injection and stripping effects on downstream flow, mixing, and pipeline hydraulics.

Surge Control Equipment Sizing Fundamentals

Surge tank, accumulator, and relief valve sizing for transient pressure protection.

Liquid Properties at Conditions Fundamentals

ASTM D341 viscosity-temperature, API gravity, bulk modulus, and vapor pressure correlations.

Pipeline Class Locations & Design Factors

49 CFR 192 class locations (1-4), design factors (0.72 to 0.40), and hydrostatic test requirements.

Line Pack Fundamentals

Pipeline gas storage volume calculations, worked examples, and operational applications for peak shaving.

Gas Processing

Dehydration, treating, separation, and NGL recovery fundamentals

Glycol Dehydration

TEG and DEG dehydration system design and dewpoint depression calculations.

Amine Treatment

MDEA, DEA, and MEA gas sweetening system design and capacity calculations.

Separator Sizing

Two-phase and three-phase separator design using API 12J guidelines.

Flash Calculations

Vapor-liquid equilibrium, K-values, and Rachford-Rice solution methods.

NGL Recovery

Cryogenic and refrigeration-based NGL recovery process optimization.

Molecular Sieve Design

Adsorption bed sizing, regeneration cycles, and capacity calculations.

Claus Process

Sulfur recovery unit design, reaction chemistry, and efficiency calculations.

Membrane Separation

Gas membrane permeation rates and CO2 removal system design.

Lean Oil Absorption

Absorption tower design and NGL recovery efficiency calculations.

Condensate Stabilization

Stabilizer column design and RVP control for liquid hydrocarbons.

NGL Fractionation

Deethanizer, depropanizer, and debutanizer column sizing.

Mercury Removal

Activated carbon bed design for mercury removal from natural gas.

Gas Drying

Dehydration methods, desiccant selection, and moisture specification.

Pipeline Drying

Air drying and nitrogen purging procedures for pipeline commissioning.

Tray Hydraulics

Distillation tray design, weeping, flooding, and efficiency calculations.

McCabe-Thiele

Graphical distillation design method and theoretical stage calculations.

Cyclone Separators

Cyclone sizing, cut diameter, and collection efficiency calculations.

Separator Internals

Mist extractors, vane packs, and coalescing element design.

Gas Subcooling

Subcooled process design and liquid recovery optimization.

TEG Dewpoint

Triethylene glycol concentration and dewpoint depression calculations.

Dehy Gas Loss

Gas losses in glycol dehydration systems and flash tank design.

Silica Gel Dehydration

Silica gel bed sizing and regeneration cycle design.

Nitrogen Rejection

Cryogenic nitrogen rejection unit design and efficiency.

Packed Column Design

Random and structured packing selection and HETP calculations.

Filter Separators

Coalescing filter separator sizing and element selection.

Disposal Systems

Produced water disposal well capacity and injection design.

Drip Blowing

Drip pot blowing calculations and liquid removal procedures.

Absorption Theory

Raoult's Law, K-values, and Kremser-Brown equation for absorber and stripper design.

Activated Carbon Adsorption

Adsorption principles, mass transfer zone, breakthrough analysis, and carbon types.

Amine System Corrosion

Corrosion mechanisms, material selection, HSS limits, and monitoring per API 945/NACE MR0175.

Amine Filtration

Mechanical filter and activated carbon bed design for amine solution purification.

Amine System Foaming

Foam causes, detection methods, antifoam selection, and prevention strategies.

Amine Inlet Separation

Inlet scrubber sizing and mist eliminator selection for amine contactor protection.

Cryogenic Absorption NRU

Cold solvent absorption process for nitrogen rejection from natural gas.

Cryogenic Distillation NRU

Single and double column cryogenic distillation for nitrogen rejection.

Glycol/Propane Combined System

Combined glycol injection and propane refrigeration for simultaneous dew point control.

Miscibility & Solubility

Phase behavior, liquid-liquid equilibria, and solubility parameters for gas processing.

Presaturation in Glycol Systems

BTEX reduction and presaturator design for glycol dehydration environmental compliance.

Propylene Carbonate (Fluor Solvent)

Physical solvent for bulk CO₂ removal with flash-only regeneration.

PSA for Nitrogen Rejection

Pressure swing adsorption cycle design with carbon molecular sieve for N₂ removal.

Rectisol Process

Chilled methanol physical solvent for deep acid gas removal in syngas applications.

SCOT Process (Tail Gas)

Hydrogenation reactor, quench, and amine absorber design for Claus tail gas treating.

Selexol Process

DMPEG physical solvent for selective H₂S and bulk CO₂ removal from natural gas.

Sulfinol Process

Hybrid sulfolane/amine solvent for COS, CS₂, and mercaptan removal from sour gas.

Thermal vs Catalytic Claus

Reaction furnace design, converter bed staging, and tail gas quality for sulfur recovery.

Air Cooler / Fin-Fan Fundamentals | Engineering Guide

Air cooler design fundamentals: ACHE sizing methodology per API 661, LMTD for crossflow, fin-fan selection, bay geome...

API 650 Tank Design Fundamentals | Engineering Guide

API 650 tank design fundamentals covering shell thickness methods, material selection, wind and seismic design, and c...

Cooling Tower Fundamentals | Engineering Guide

Cooling tower design fundamentals: Merkel equation, tower types (counterflow, crossflow), water treatment, thermal de...

Cyclosep Separator Fundamentals | Engineering Guide

Cyclosep separator fundamentals: cyclonic inline separation technology, centrifugal force separation principles, comp...

Electric Motor Sizing Guide | NEMA MG-1, NEC 430 & IEEE 841

Comprehensive guide to electric motor sizing for pipeline and process applications.

Flange Leakage Fundamentals | Engineering Guide

Flange leakage fundamentals: ASME PCC-1 bolt torque procedures, gasket seating stress, pressure-temperature ratings p...

Fuel Gas Filter Fundamentals | Engineering Guide

Fuel gas filter fundamentals: coalescing filter design, particulate removal, moisture separation, filter element type...

Gas Turbine Fundamentals | Engineering Guide

Gas turbine fundamentals for midstream operations: Brayton cycle, aeroderivative vs industrial frame, altitude and te...

Separator Internals Design Fundamentals | Engineering Guide

Separator internals design fundamentals: inlet devices, vane packs, mist eliminators, coalescing elements, and intern...

Scrubber Sizing Fundamentals | Engineering Guide

Scrubber sizing fundamentals: Souders-Brown K factor method, inlet scrubber design per API 12J, compressor suction sc...

Separator Comparison Fundamentals | Engineering Guide

Horizontal vs vertical separator comparison: selection criteria, capacity differences, cost factors, installation con...

Separator Type Selection Guide | Engineering Guide

Separator type selection guide: choose between two-phase, three-phase, scrubbers, filter separators, slug catchers, a...

Tank Blanketing / Padding Gas Fundamentals | Engineering Guide

Tank blanketing fundamentals: nitrogen padding gas systems, conservation vents per API 2000, breathing losses, flash ...

Tank Settling / Foundation Fundamentals | Engineering Guide

Tank settlement and foundation evaluation fundamentals per API 653 and API 650 Appendix B.

Three-Phase Separator Fundamentals | Engineering Guide

Three-phase separator fundamentals: oil-water-gas separation, weir design, interface level control, retention time si...

Control Valve Noise Fundamentals | IEC 60534-8-3 Engineering Guide

Control valve noise fundamentals: IEC 60534-8-3 aerodynamic noise prediction, pipe wall transmission loss, A-weightin...

Boil-Off Gas (BOG) Fundamentals | LNG Storage & Ship Loading

Boil-off gas (BOG) fundamentals for LNG and NGL cryogenic storage: heat ingress mechanisms, flash BOG, displacement B...

Dehydration Utility Systems Fundamentals | Glycol Dehy Support Equipment

Dehydration utility systems fundamentals: reboiler fuel gas, glycol pump sizing, reflux condenser design, stripping g...

Gas Dewatering Fundamentals | Natural Gas Dehydration Engineering Guide

Gas dewatering fundamentals for process engineers.

Gas Quality Fundamentals | Pipeline Tariff Specs & Custody Transfer Guide

Gas quality specification fundamentals: pipeline tariff requirements, heating value, H2S and CO2 limits, water dewpoi...

Pinch Analysis Fundamentals | Heat Integration Engineering Guide

Pinch analysis fundamentals for process and energy engineers.

Vapor Recovery Fundamentals | VRU Sizing & NSPS Compliance

Vapor recovery fundamentals for upstream oil and gas: flash gas generation, VRU compressor types, EPA NSPS OOOO/OOOOa...

Wobbe Index & Gas Interchangeability Fundamentals | Engineering Guide

Wobbe Index fundamentals for gas interchangeability assessment.

Compression & Rotating Equipment

Compressor and pump sizing, efficiency, and performance calculations

Compressor Sizing

Centrifugal and reciprocating compressor selection and performance.

Compressor Horsepower

Power requirements for gas compression using polytropic efficiency.

Pump Sizing

Centrifugal pump head, NPSH, and power calculations.

Turboexpander Efficiency

Isentropic efficiency and power recovery in cryogenic plants.

JT Valve Cooling

Joule-Thomson cooling and isenthalpic expansion calculations.

Refrigeration Systems

Propane and mixed refrigerant system design and COP calculations.

Compressor Selection

Centrifugal vs reciprocating compressor selection criteria and trade-offs.

Recip Compressor Sizing

Preliminary reciprocating compressor sizing using industry-standard methodology.

Capacity Control

Reciprocating compressor capacity control methods and power optimization.

Recip Capacity Control

Step control, clearance pockets, and variable volume methods.

Expander Calculations

Turboexpander power recovery and isentropic efficiency calculations.

Ejector Design

Steam and gas ejector sizing, entrainment ratios, and vacuum system design.

HP & Torque

Horsepower to torque conversion and rotating equipment power calculations.

Compressor Gas Properties

Gas property calculations for compressor performance analysis.

Centrifugal Performance Maps

Compressor head-flow curves, surge lines, and operating point analysis.

Surge & Choke

Centrifugal compressor surge control and stonewall limitations.

Recip Compressor Theory

Reciprocating compressor thermodynamics and cycle analysis.

Recip Construction

Reciprocating compressor mechanical design and component selection.

Recip Performance

Reciprocating compressor efficiency and performance optimization.

Recip Calculations

Reciprocating compressor sizing calculations and design parameters.

Pulsation Analysis & Bottle Sizing

Reciprocating compressor pulsation dampeners, bottle sizing, and acoustic analysis per API 618.

Compressor Foundations

Foundation design, vibration isolation, and dynamic analysis.

Compressor Thermodynamics

Polytropic and isentropic efficiency calculations for compression.

Stabilizer Overhead Compressor

Vapor recovery compression for condensate stabilizer overhead systems.

Centrifugal Discharge Temperature Fundamentals | Engineering Guide

Centrifugal compressor discharge temperature prediction: polytropic vs isentropic methods, material and seal temperat...

Centrifugal Compressor Efficiency Fundamentals | Engineering Guide

Centrifugal compressor efficiency: polytropic vs isentropic methods, Schultz correction, efficiency curves, and typic...

Centrifugal Performance Map Fundamentals | Engineering Guide

Centrifugal compressor performance map fundamentals: speed lines, surge line, stonewall, fan laws, and operating enve...

Centrifugal Polytropic Head Fundamentals | Engineering Guide

Polytropic head calculation fundamentals: Schultz method, gas property effects, multi-stage analysis, and ASME PTC-10...

Centrifugal Surge Margin Fundamentals | Engineering Guide

Centrifugal compressor surge margin fundamentals: surge phenomena, anti-surge control systems, recycle valve sizing, ...

Centrifugal Tuyere Nozzle Fundamentals | Engineering Guide

Centrifugal compressor tuyere nozzle design fundamentals: inlet guide vanes, flow coefficients, nozzle loss modeling,...

Compressor Flow Conversion Fundamentals | Engineering Guide

Compressor flow unit conversions: ACFM, SCFM, MMSCFD, ICFM relationships, standard conditions, and actual vs standard...

Compressor Fuel Gas Fundamentals | Engineering Guide

Compressor fuel gas fundamentals: driver fuel consumption for gas engines and turbines, heat rate calculations, altit...

Foundation Anchor Bolts Fundamentals | Engineering Guide

Anchor bolt design for compressor foundations: tension and shear load analysis, embedment depth, bolt patterns, and c...

Foundation Block Sizing Fundamentals | Engineering Guide

Block foundation sizing for compressors per ACI 351.3R: mass ratio rules, center of gravity analysis, eccentricity li...

Foundation Depth Fundamentals | Engineering Guide

Foundation depth determination for compressors: frost depth, bearing stratum identification, soil investigation requi...

Foundation Grout Volume Fundamentals | Engineering Guide

Foundation grout volume fundamentals: epoxy vs cementitious grout selection, pour planning, temperature limits, and v...

Foundation Mass Ratio Fundamentals | Engineering Guide

Foundation mass ratio fundamentals: ACI 351.3R guidelines, dynamic amplification factors, and concrete-to-machine wei...

Foundation Natural Frequency Fundamentals | Engineering Guide

Foundation natural frequency fundamentals: soil spring calculations, resonance avoidance, 6-DOF frequency analysis, a...

Foundation Soil Bearing Fundamentals | Engineering Guide

Soil bearing capacity for compressor foundations: allowable bearing pressure, settlement analysis, Terzaghi bearing c...

Foundation Vibration Amplitude Fundamentals | Engineering Guide

Foundation vibration amplitude analysis: dynamic response, ISO 10816 limits, API 684 criteria, transmissibility, and ...

Pulsation Bottle Sizing Fundamentals | Engineering Guide

Pulsation dampener bottle sizing: acoustic filter design, API 618 approach levels, volume-choke-volume sizing, and ac...

Reciprocating Compression Ratio Fundamentals | Engineering Guide

Compression ratio fundamentals: single-stage vs multi-stage design, equal ratio rule, temperature limits, interstage ...

Reciprocating Compressor Sizing Fundamentals | Engineering Guide

Reciprocating compressor sizing methodology: cylinder selection, bore and stroke, clearance pockets, valve losses, ca...

Reciprocating Compressor Discharge Temperature Fundamentals | Engineering Guide

Reciprocating compressor discharge temperature fundamentals: adiabatic process, k-value effects, intercooling require...

HP per MMSCFD Estimation Fundamentals | Engineering Guide

HP per MMSCFD estimation for reciprocating compressors: rules of thumb, compression ratio effects, gas property impac...

Reciprocating Pulsation Analysis Fundamentals | Engineering Guide

Pulsation analysis for reciprocating compressors: acoustic frequency calculation, API 618 approach levels 1-3, piping...

Reciprocating Compressor PV Diagram Fundamentals | Engineering Guide

PV diagram fundamentals for reciprocating compressors: theoretical vs actual indicator cards, valve losses, clearance...

Reciprocating Rod Load Fundamentals | Engineering Guide

Rod load analysis for reciprocating compressors: gas loads, inertia forces, combined rod load diagrams, API 618 limit...

Reciprocating Volumetric Efficiency Fundamentals | Engineering Guide

Volumetric efficiency for reciprocating compressors: clearance re-expansion, valve losses, ring leakage, capacity con...

Screw Compressor Fundamentals | Oil-Flooded & Dry | API 619 Engineering Guide

Screw compressor fundamentals: oil-flooded vs dry design, API 619 requirements, rotor profiles, discharge temperature...

Vibration Analysis Fundamentals | Engineering Guide

Vibration analysis fundamentals for rotating equipment: ISO 10816 severity zones, API 617/618 compliance, bearing def...

Engine Air/Fuel Ratio Fundamentals

Stoichiometric ratios, excess air calculations, and combustion efficiency for natural gas engines.

Compressor Flow Prediction Fundamentals

Fan laws, performance curve corrections, and flow prediction methods for compressor operations.

Air-Fuel Ratio & Equivalence Ratio Fundamentals

Air-fuel ratio, equivalence ratio, lambda, and excess air calculations for natural gas engines.

Compressed Air System Design Fundamentals

Demand analysis, compressor selection, receiver sizing, and distribution piping per ASME and NFPA standards.

Compressor Loading Analysis

Rod load analysis per API 618: gas loads, inertia forces, rod reversal, and frame ratings.

Compressor Station Noise Fundamentals

Noise generation, propagation, and mitigation at natural gas compressor stations for regulatory compliance.

Engine Horsepower Re-Rating Fundamentals

Engine horsepower derating for emissions compliance, altitude correction, and temperature effects.

Exhaust Gas Temperature Fundamentals

EGT monitoring, prediction, and analysis for natural gas compressor engines and power generation units.

Silencer DIL Fundamentals

Dynamic Insertion Loss, octave-band analysis, ISO 9613-1 absorption, and stack directivity for noise control.

Safety & Relief Systems

Pressure relief, flare systems, and consequence analysis per API standards

Relief Valve Sizing

PSV sizing per API 520/521 for gas, liquid, and two-phase relief.

Fire Relief

Fire case relief loads per API 521 Annex A wetted area method.

Flare Radiation

Thermal radiation and safe spacing calculations for flare systems.

Blowdown Systems

Depressurization time and rate calculations for emergency blowdown.

Consequence Modeling

Gas dispersion, jet fire, and explosion consequence analysis.

HAZOP Studies

Hazard and operability study methodology and deviation analysis.

LOPA Analysis

Layer of Protection Analysis and SIL determination per IEC 61511.

Depressurizing Systems

Emergency depressurization design and API 521 requirements.

Flare Backpressure

Flare header hydraulics and backpressure calculations.

PSV Header Design

Pressure safety valve manifold and header sizing.

Gas Leak Rate

Orifice flow equations and leak rate calculations for consequence analysis.

Tank Vent Sizing

API 2000 tank breathing and emergency venting calculations.

Reaction Relief

Runaway reaction relief sizing per DIERS methodology.

Blowdown Time

Vessel depressurization time calculations per API 521.

Vessel Sizing

Pressure vessel sizing and ASME code design.

Combustion & Flammability

LEL/UEL theory, Le Chatelier mixing rule, and combustion stoichiometry fundamentals.

BLEVE Fireball Fundamentals | Thermal Radiation & Safe Distances

BLEVE fireball fundamentals for process safety engineers.

ESD Valve Fundamentals | Emergency Shutdown Valve Design Guide

Emergency shutdown valve fundamentals for safety and instrumentation engineers.

Fire Water Demand Fundamentals | Engineering Guide

Fire water demand fundamentals: NFPA 15 water spray design, deluge system sizing, wetted area calculations, fire pump...

Fugitive Emissions Fundamentals | LDAR & Leak Detection Engineering Guide

Fugitive emissions fundamentals for environmental and operations engineers.

GHG Emissions Fundamentals | Midstream Greenhouse Gas Reporting Guide

GHG emissions fundamentals for midstream oil and gas: EPA Subpart W reporting, emission factors, calculation methodol...

Jet Fire Radiation Fundamentals | Flame Length & Thermal Hazard Guide

Jet fire radiation fundamentals for process safety engineers.

Pneumatic Device Emissions Fundamentals | EPA OOOOa Compliance Guide

Pneumatic device emissions fundamentals for oil and gas: EPA NSPS OOOOa/OOOOb requirements, device classifications, e...

Pool Fire Modeling Fundamentals | Flame Height, Radiation & Hazard Zones

Pool fire modeling fundamentals for process safety and pipeline engineers.

PSV Inlet Pressure Loss Fundamentals | Engineering Guide

PSV inlet pressure loss fundamentals: API 520 Part II 3% rule, chatter mechanism, Darcy-Weisbach pressure drop, Crane...

SIL Verification Fundamentals | IEC 61508/61511 Safety Integrity Guide

SIL verification fundamentals for safety and instrumentation engineers.

Atmospheric Dispersion Fundamentals | Gaussian Plume Model & Stack Height Design

Atmospheric dispersion modeling fundamentals: Gaussian plume model, Pasquill-Gifford stability classes, Briggs plume ...

Thermodynamics & Fluid Properties

Gas laws, phase behavior, and fluid property correlations

Ideal Gas Law

PV=nRT applications and real gas deviation using compressibility factors.

Gas Density

Density calculations at operating conditions using equations of state.

Vapor Pressure

Antoine equation and vapor pressure correlations for hydrocarbons.

Hydrate Prediction

Gas hydrate formation temperature and inhibitor requirements.

Water Content

Saturated water content in natural gas using McKetta-Wehe charts.

Phase Envelope

Cricondenbar, cricondentherm, and retrograde condensation behavior.

Hydrate Temperature

Gas hydrate formation temperature predictions and curves.

Inhibitor Injection

Methanol and glycol injection rate calculations for hydrate prevention.

API Gravity

API gravity conversions and specific gravity relationships.

Atmospheric Pressure

Elevation corrections and barometric pressure calculations.

Average Pressure

Mean pressure calculations for pipeline flow analysis.

Fixed Pressure Factor

Pressure base factor corrections for flow measurement.

Gas Rate vs Time

Decline curve analysis and production forecasting.

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Z-Factor Fundamentals

Gas compressibility factor theory, Standing-Katz chart, pseudo-critical correlations, and sour gas corrections

Heating Value from Gas Composition Fundamentals | Engineering Guide

Heating value fundamentals: combustion chemistry, GPA 2145 physical constants, HHV vs LHV, Wobbe Index, gas quality s...

Temperature Drop Fundamentals | Engineering Guide

Temperature drop: pipeline heat transfer, J-T cooling at pressure reduction, hydrate prediction, overall heat transfe...

Heat Transfer & Exchangers

Heat exchanger design, thermal calculations, and temperature effects

Flow Measurement & Metering

Orifice meters, flow calculations, and measurement accuracy

Orifice Meter

Orifice plate sizing per AGA Report No. 3 and ISO 5167.

Venturi Meter

Design principles for low pressure loss flow measurement per ISO 5167-4.

Gas Velocity

Actual and standard velocity calculations for gas flow systems.

Control Valve Sizing

Cv calculation per ISA/IEC 60534 for gas and liquid service.

Drain Orifice

Restriction orifice sizing for liquid drains and blowdown.

NGL Meter Station Design

Custody transfer measurement for NGL products per Enterprise Products methodology.

Fitting K-Values

Resistance coefficients and equivalent lengths for pipe fittings.

Air-Gas Blending

Propane-air mixing ratios and BTU value adjustments.

Gas Measurement Fundamentals | AGA 3/7/9/11 Meter Types & Custody Transfer Guide

Gas measurement fundamentals: orifice meters (AGA 3), turbine meters (AGA 7), ultrasonic meters (AGA 9), Coriolis met...

Coriolis Meter Fundamentals | Mass Flow Measurement Engineering Guide

Coriolis meter fundamentals for measurement and instrumentation engineers.

Custody Transfer Uncertainty Fundamentals | ISO 5168 & AGA Metering Guide

Custody transfer measurement uncertainty fundamentals: ISO 5168 methodology, AGA 3/7/9 metering standards, root-sum-s...

Gas Chromatograph Calibration Fundamentals | GPA 2261 & ISO 6974

Gas chromatograph calibration fundamentals for custody transfer: GC operating principles (TCD/FID), calibration gas s...

Meter Proving Fundamentals | API MPMS Chapter 4 Guide

Meter proving fundamentals: prover types, meter factor calculation, repeatability criteria, Grubbs outlier test, prov...

Meter Prover Sizing Fundamentals | Engineering Guide

Meter prover sizing fundamentals: pipe prover design, small volume provers, meter factor calculation, volume correcti...

Tank Gauging Fundamentals | API MPMS Ch. 2 & Strapping Table Methods

Tank gauging fundamentals: strapping table methods, innage and outage measurement, CTL and CPL temperature and pressu...

Turbine Meter Fundamentals | Engineering Guide

Turbine meter fundamentals: operating principles, AGA Report No.

Multiphase Flow

Two-phase flow correlations, liquid holdup, and wellbore hydraulics

Permitting & Compliance

Area classification, emissions calculations, equipment spacing, and regulatory compliance

Compressor Station Layout

Equipment spacing, setback distances, and plot plan design per DOT CFR 192.

ESD System Design

Emergency shutdown valve placement, logic design, and fail-safe requirements.

Electrical Area Classification

Class I Division 1/2 hazardous area classification per API RP 500/505.

Pigging System Design

Pig launcher and receiver sizing, barrel dimensions, and pigging operations.

Facility Piping Standards

Valve selection, branch connections, and piping layout per ASME B31.8 and B31.3.

Air Permitting

Emission calculations, PTE thresholds, and permit requirements for gas facilities.

Design Compliance Checklist

Go/No-Go audit tool for station spacing, ESD, noise, and safety compliance.

Flow Diagram Standards

PFD and P&ID symbols, ISA S5.1 instrument identification, and documentation standards.

Electrical Area Classification Extent Fundamentals | API RP 500 & 505

Electrical area classification fundamentals: API RP 500/505 hazardous area extent, NEC Article 500/505, Class I Divis...

Branch Connection Reinforcement Fundamentals | ASME B31.3 Area Replacement

Branch reinforcement fundamentals: ASME B31.3 area replacement method, reinforcement pad design, integrally reinforce...

Electrical Cable Sizing Fundamentals | NEC Ampacity & Voltage Drop

Electrical cable sizing fundamentals: NEC ampacity tables, voltage drop calculations, temperature and conduit fill de...

Equipment Spacing Fundamentals | Engineering Guide

Equipment spacing fundamentals: API 2510, NFPA 30, fire exposure distances, minimum separation requirements for compr...

Hydrostatic Test Pressure Fundamentals | Engineering Guide

Hydrostatic testing fundamentals: ASME B31.3 and B31.8 test pressure calculations, temperature correction factors, te...

Major Source Threshold Fundamentals | CAA Title V & PSD Permitting

Major source threshold fundamentals: CAA Title V permitting, PSD thresholds, HAP emissions, criteria pollutant calcul...

Noise Propagation Fundamentals | Sound Attenuation & OSHA Compliance

Noise propagation fundamentals: sound pressure and power levels, distance attenuation, barrier insertion loss, OSHA p...

PID Tuning Fundamentals | Engineering Guide

PID tuning fundamentals: Ziegler-Nichols, Cohen-Coon, IMC/Lambda tuning methods, process dynamics, controllability as...

Pig Launcher Sizing Fundamentals | Barrel Design & ASME B31.8

Pig launcher and receiver sizing fundamentals: barrel diameter and length, closure types, kicker line sizing, pig tra...

Pipe Rack Loading Fundamentals | ASCE 7 & PIP STC01015

Pipe rack loading fundamentals: dead, wind, and seismic load calculations per ASCE 7 and PIP STC01015.

Potential to Emit Fundamentals | PTE Calculations & Air Permitting

Potential to emit (PTE) calculation fundamentals: maximum capacity assumptions, emission factor sources, enforceable ...

Pressure Drop in Piping Fundamentals | Darcy-Weisbach & Crane TP-410

Pressure drop in piping fundamentals: Darcy-Weisbach equation, Moody diagram, friction factors, equivalent lengths, K...

Unit Conversions & Calculations

Engineering unit conversions and common calculation fundamentals

Metric Conversions

SI to imperial unit conversions for engineering calculations.

Temperature Conversions

Fahrenheit, Celsius, Kelvin, and Rankine temperature conversions.

Energy Conversions

BTU, kWh, and joule conversions for energy calculations.

MCF to MMBTU

Natural gas volume to energy content conversions.

H2S Conversions

Hydrogen sulfide concentration unit conversions (ppm, grains, mg/m3).

Process Optimization

Process efficiency analysis and optimization techniques.

Gas Conversions

Natural gas flow rate and volume unit conversions.

Linear Interpolation

Engineering interpolation methods for table lookups.

Value Extrapolation

Data extrapolation methods beyond measured ranges.

Process Efficiency

Process efficiency calculations and benchmarking.

District Regulator Sizing Fundamentals | Engineering Guide

District regulator sizing fundamentals: diversity factors, load estimation, Cv sizing, lockup and droop analysis, rel...

Excess Flow Valve (EFV) Fundamentals | Engineering Guide

Excess flow valve fundamentals: operating principles, 49 CFR 192.383 federal mandate, EFV sizing methodology, install...

Instrument Air System Fundamentals | Engineering Guide

Instrument air system design fundamentals: ISA 7.0.01 air quality, compressor sizing, desiccant dryer selection, rece...

Regulator Station Design Fundamentals | Engineering Guide

Gas regulator station design fundamentals: Cv sizing, pressure regulation, relief valve requirements, noise control, ...

Service Line Sizing Fundamentals | Engineering Guide

Gas service line sizing fundamentals: Weymouth and Spitzglass equations, pipe material selection, fitting equivalent ...

Town Border Station Design Fundamentals | Engineering Guide

Town border station design fundamentals: TBS layout, pressure regulation, Joule-Thomson cooling, metering, odorizatio...

Construction & Materials

Welding, coatings, bolting, and construction calculations

Stud Bolt Sizing

ASME B16.5 flange bolting, torque, and gasket seating requirements.

Welding Rod Calculations

Electrode consumption and welding material requirements.

Tape Coating

Pipeline tape coating material and application calculations.

Material Selection

Piping material selection for corrosive and sour service.

Skillet Thickness

Blind flange (skillet) thickness calculations per ASME.

Concrete Volume

Foundation and equipment pad concrete volume calculations.

N2 Pressure Testing

Nitrogen pressure testing procedures and volume calculations.

Tensile Strength

Material tensile strength and allowable stress calculations.

Corrosion Rate

Corrosion rate calculations and remaining life assessment.

CO2 Corrosion Fundamentals | de Waard-Milliams Model & Mitigation Guide

CO2 corrosion fundamentals: de Waard-Milliams model derivation, carbonic acid chemistry, FeCO3 protective scale forma...

CP Anode Sizing Fundamentals | Cathodic Protection Engineering Guide

Cathodic protection fundamentals for buried pipelines.

CP Rectifier Fundamentals | Cathodic Protection Sizing & Design Guide

Cathodic protection rectifier fundamentals: rectifier types (TRU, switch-mode, solar), sizing calculations, output vo...

CP Survey Fundamentals | Cathodic Protection & Pipe-to-Soil Potential Guide

CP survey fundamentals: cathodic protection principles, pipe-to-soil potential measurement, -850 mV criterion, IR dro...

Gas Migration & Methane Detection Fundamentals | 49 CFR 192 Leak Survey Guide

Gas migration and methane detection fundamentals: leak classification (Grade 1/2/3), detection methods (FID, catalyti...

Leak Detection Fundamentals | API 1130 CPM Systems & Pipeline Integrity

Pipeline leak detection fundamentals: CPM system design per API 1130, mass/volume balance, RTTM, acoustic and fiber o...

Welding Preheat Fundamentals | Carbon Equivalent & PWHT Engineering Guide

Welding preheat fundamentals for pipeline and welding engineers.

Tanks & Storage

Tank volume calculations, storage design, and liquid handling

NGL & Cryogenic

Cryogenic NGL recovery processes, refrigeration systems, and lean oil absorption fundamentals

NGL Fractionation & Processing

Column design, product specifications, and liquid treating for NGL fractionation trains

Economics & Cost Analysis

Project economics, investment analysis, and operating cost calculations