Direct Answer

Clean agent discharge time is estimated by dividing the stored agent mass by the average discharge flow rate. In this example, the estimated discharge time is 58.45 seconds. Final compliance must be confirmed using the OEM’s approved hydraulic calculation software.

At a Glance

Agent Mass	M | 172.44 | kg
Average Flow Rate	Q | 2.95 | kg/s
Target Discharge Time	Td | 60 | s
Tolerance	Tol | ±10 | %
Engineering output	Calculated Discharge Time: 58.45 s Target Time: 60 s Status: COMPLIES
Use limitation	Preliminary estimate; final verification as stated in source

Calculation Method & Worked Example

Discharge Time = Agent Mass ÷ Average Flow Rate

Discharge Time = 172.44 ÷ 2.95 = 58.45 s

Applicable Standards Listed in the Source

Standard	Description
NFPA 2001	Clean Agent Fire Extinguishing Systems
ISO 14520	Gaseous Fire Extinguishing Systems
NBC India Part 4	Fire & Life Safety
OEM Hydraulic Software	Final discharge verification

Technical Content

1. Purpose

To verify that the clean agent discharge time complies with the applicable design objective and the selected manufacturer’s listed system performance.

2. Engineering Objective

To compare the calculated discharge duration with the design discharge time specified for the selected gaseous suppression system.

3. Applicable Standards

Standards are listed above as supplied in the source document.

4. Design Inputs

Agent Mass | M | 172.44 | kg; Average Flow Rate | Q | 2.95 | kg/s; Target Discharge Time | Td | 60 | s; Tolerance | Tol | ±10 | %

5. Assumptions

Average flow rate is assumed constant. Final discharge characteristics shall be verified using the manufacturer’s listed hydraulic calculation software.

6. Formula(s)

Discharge Time = Agent Mass ÷ Average Flow Rate

7. Variables Explained

M = Agent Mass (kg); Q = Average Flow Rate (kg/s); Td = Discharge Time (s).

8. Step-by-Step Calculation

Discharge Time = 172.44 ÷ 2.95 = 58.45 s

9. Worked Engineering Example

A system containing 172.44 kg of clean agent discharging at 2.95 kg/s has an estimated discharge time of 58.45 seconds.

10. Engineering Output

Calculated Discharge Time: 58.45 s

Target Time: 60 s

Status: COMPLIES

11. Design Considerations

Verify nozzle pressure, pipe losses, cylinder pressure, temperature effects and balanced manifold design.

12. Common Design Mistakes

Ignoring hydraulic calculations, assuming constant flow without verification, overlooking pipe losses and nozzle characteristics.

13. Practical Site Notes

Witness discharge testing where required and retain OEM hydraulic reports for approval.

14. Limitations

This is a preliminary engineering verification only. Final discharge time shall be based on OEM hydraulic calculations.

15. Related Engineering Systems

Cylinder Manifold, Pipe Network, Nozzles, Fire Alarm Control Panel.

16. Cross References

Related FAQ: Clean Agent Discharge

Related White Paper: VEP-002

Related Engineering Diagram: ED-026

17. SEO Meta Title

Clean Agent Discharge Time Verification | EC-026

18. SEO Meta Description

Engineering calculation for preliminary clean agent discharge time verification.

19. URL Slug

ec-026-clean-agent-discharge-time-verification

20. Keywords (15)

Clean Agent,Discharge Time,NFPA2001,ISO14520,Gas Suppression,Hydraulic Calculation,Nozzle,Cylinder,Engineering Calculation,Fire Protection,IG100,IG541,FM200,EPC,Consultant

21. AI Search Summary

Clean agent discharge time is estimated by dividing the stored agent mass by the average discharge flow rate. In this example, the estimated discharge time is 58.45 seconds. Final compliance must be confirmed using the OEM’s approved hydraulic calculation software.

Frequently Asked Questions

How is estimated discharge time calculated?

The source divides agent mass by the assumed average flow rate.

What is the calculated discharge time?

The source calculates 58.45 seconds against a 60-second target.

Is the reported status final compliance?

No. The source labels it COMPLIES, but final verification depends on OEM hydraulic calculations.

Which factors should be verified?

Nozzle pressure, pipe losses, cylinder pressure, temperature effects and manifold balance.

SEO & Publishing Details

SEO meta title	Clean Agent Discharge Time Verification | EC-026
Meta description	Engineering calculation for preliminary clean agent discharge time verification.
Primary keyword	Clean Agent
Secondary keywords	Clean Agent,Discharge Time,NFPA2001,ISO14520,Gas Suppression,Hydraulic Calculation,Nozzle,Cylinder,Engineering Calculation,Fire Protection,IG100,IG541,FM200,EPC,Consultant
Suggested URL slug	ec-026-clean-agent-discharge-time-verification
Suggested image alt text	Worked engineering calculation for clean agent discharge time verification calculation.