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