HAZOPS

Hazards and Operability Study. Team meetings aiming to examine planned or existing process in order to identify and evaluate possible risks to personnel, equipment, or efficient operation.

Head

Pressure based on fluid column

HPHT

High pressure high temperature. An HPHT environment has a pressure rating greater than 15,000psi, and a temperature rating greater than 350°F.

HPU

Hydraulic power units deliver steady hydraulic pressure and flow.

HSE

Health Safety and Environment

HSSE

Health, Safety, Security and Environmental