General Industry Term

Health Assessment Tool

Highest astronomical tide

Hydraulic Actuating Unit

Heat Affected Zone

haz

Hollywood Box Office

Harvard Business School

Houston Business Unit Resources

Health Care Account

Helideck Certification Agency

High-consequence area

Houston Crisis Center

homogeneous charge compression ignition

Heavy Cat Cycle Oil

Heavy Cat Cracked Spirit

Heave Compensated Davits

hydraulic /chemical distribution module

Human-Computer Interaction

Hydrocracker

Hydrochloric Acid

heavy cat naphtha

cesium formate

Handover Certification Pack

Hydrocracker Pre-Treat

hcrd

Health Care Spending Account

Heavy Coke Still Distillate

Hole Cutting Tool

Hub Cleaning Tool

Hydro Cracking Unit