Hot Tap Flow Calculator
Calculates flow rates and pressure drops through hot tap connections on operating pipelines. Ensures adequate flow capacity and pressure for successful hot tapping operations per industry practices.
Calculation Type:
Welding Setup
in
mph
Welding Process
Pipe & Tape Specs
in
ft
in
Application Details
%
mils
Pipe Configuration
in
in
Operating Conditions
psig
°F
ft/sec
Welding Purge Results
Shield Gas Flow
- CFH
Purge Flow Rate- CFH
Backing Gas Flow- CFH
Purge Time- min
Total Gas Consumed- CF
Estimated Cost$ -
Tape Coating Results
Surface Area
- ft²
Total Tape Length- ft
Primer Needed- gal
Total Labor Time- hours
Estimated Total Cost$ -
Hot Tap Flow Results
Main Flow Rate
- MMSCFD
Max Branch Flow- MMSCFD
Branch Velocity- ft/sec
Pressure Drop- psi
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Formula (Hot Tap Flow)
Qbranch = C × Abranch × √(2gΔP/ρ)
Qbranch = Branch Flow Rate
C = Discharge Coefficient
Abranch = Branch Area
ΔP = Pressure Differential
ρ = Fluid Density
Standards & References
API RP 2201 Safe Hot Tapping Practices in the Petroleum & Petrochemical Industries
ASME B31.4 / B31.8 Pipeline Transportation Systems for Liquids and Gas
NACE SP0169 Control of External Corrosion on Underground or Submerged Metallic Piping Systems
Important Notes
Hot tapping operations require careful planning and adherence to safety protocols.
Purge gas flow rates are critical for preventing explosions during welding.
Tape coating effectiveness depends on proper surface preparation and application.
Always consult relevant industry standards and company procedures.