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Reactor Coolant Pump Flow Coastdown & Rotor Flywheel Inertia Calculator

Easily calculate and compute reactor coolant pump flow coastdown & rotor flywheel inertia calculator with accurate equations, live formulas, and expert guidance.

Calculated Result
18.7 seconds

Flow Coastdown Half-Time (t_half)

Flow Coastdown Half-Time (t_half)

18.7 seconds

Stored Rotational Energy Mj

51.3

Flow Remaining After10 Seconds Pct

65.1

Dnbr Safety Protection Status

SUFFICIENT FLYWHEEL INERTIA (Prevents DNB during Coastdown)

18.7 — seconds

Calculation Breakdown

  1. Applied FormulaModels kinetic energy stored in heavy depleted-uranium or steel RCP motor flywheels to maintain core coolant flow during the critical 15-second window after complete electrical trip.\frac{Q(t)}{Q_0} = \frac{1}{1 + \frac{t}{t_c}}, \quad t_c = \frac{I \omega_0^2}{P_{\text{pump}}}, \quad I = \frac{1}{4} m_{\text{flywheel}} R^2

RCP Flow Coastdown Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.04.79.31419Flow Coastdown Half-Time (t_half)

What Is the Reactor Coolant Pump Flow Coastdown & Rotor Flywheel Inertia Calculator?

This tool computes reactor coolant pump flow coastdown & rotor flywheel inertia calculator with high precision arithmetic.

How Does the Reactor Coolant Pump Flow Coastdown & Rotor Flywheel Inertia Calculator Work?

Models kinetic energy stored in heavy depleted-uranium or steel RCP motor flywheels to maintain core coolant flow during the critical 15-second window after complete electrical trip.

Reactor Coolant Pump Flow Coastdown & Rotor Flywheel Inertia Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

Q(t)Q0=11+ttc,tc=Iω02Ppump,I=14mflywheelR2\frac{Q(t)}{Q_0} = \frac{1}{1 + \frac{t}{t_c}}, \quad t_c = \frac{I \omega_0^2}{P_{\text{pump}}}, \quad I = \frac{1}{4} m_{\text{flywheel}} R^2

Models kinetic energy stored in heavy depleted-uranium or steel RCP motor flywheels to maintain core coolant flow during the critical 15-second window after complete electrical trip.

How to Use the Reactor Coolant Pump Flow Coastdown & Rotor Flywheel Inertia Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Reactor Coolant Pump Flow Coastdown & Rotor Flywheel Inertia Calculator Example

Input Values:

flywheelMomentOfInertiaKgM2:6500
pumpOperatingSpeedRpm:1200
pumpShaftPowerKw:5500
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required seconds.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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