⚠️ IIAR 2 Section 6.14 (Emergency Exhaust CFM = 20 x Mass^0.5, Gas Relief)

Ammonia Machinery Room Ventilation Calculator

Size continuous and high-speed emergency exhaust ventilation fans for industrial ammonia refrigeration machinery rooms under IIAR 2 Section 6.14 & ASHRAE 15: calculate emergency exhaust airflow (CFM = 20 x √Mass of largest ammonia charge in lbs), size Class I Div 2 spark-proof exhaust fans, emergency intake louvers, and life safety mechanical contracting profits.

1. Project & Operating Inputs

Largest Single Ammonia Vessel Charge (Lbs e.g. 18,000 Lbs High-Pressure Receiver)

Machinery Room Floor Area (Square Feet e.g. 3,500 Sq Ft Engine Room)

Customer Bid Price for Supplied & Wired Emergency Fan Array ($)

Explosion-Proof Axial Fans, Optical Gas Detectors, Dual Power Feed ATS ($)

2. Financial Breakdown & Yield

IIAR 2 AMMONIA SAFETY VENTILATION

Turnkey Ammonia Safety Fan Package Profit

Process Safety Management Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost