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IndustryGlossary Term

SOHIC (Stress-oriented Hydrogen-induced Cracking)

A form of metal damage where hydrogen causes stacking cracks to form perpendicular to applied stress in steel pipe and pressure vessels. Common in sour service environments like H2S-containing oil and gas systems. Subcontractors doing inspection or repair work must flag suspected SOHIC immediately, as it signals serious structural failure risk.

Related Terms

Pylon

Industry

A tall structural tower used to support overhead power lines, pipelines, or signage on job sites. Subcontractors may work near pylons during civil, electrical, or pipeline installation scopes. Always verify exclusion zones before mobilising equipment.

Data Mesh

Industry

A decentralised approach where different teams own and share their own operational data directly. For subcontractors, it means job site data—timesheets, inspection reports, equipment logs—flows more easily between your systems and the prime contractor's. Reduces bottlenecks caused by waiting on a single centralised IT team to manage data access.

NGL (Natural Gas Liquids)

Industry

Hydrocarbons extracted from natural gas, including propane, butane, and condensate. NGL facilities and pipelines generate steady subcontract work in processing, instrumentation, and maintenance. Understanding NGL handling requirements helps crews meet site-specific safety and equipment standards.

Hydrocyclone

Industry

A cone-shaped separation device that removes solids or liquids from drilling fluids using centrifugal force. Subcontractors service and maintain these units on drilling rigs and fluid processing systems. Proper handling requires familiarity with high-pressure fluid systems and waste disposal regulations.

Mmcf/d (million Cubic Feet Per Day)

Industry

A measurement of natural gas production or flow volume, used to describe the output capacity of a well, pipeline, or facility. Subcontractors use this figure to gauge job scale, equipment sizing, and crew requirements. Higher MMcf/d ratings typically signal larger scopes of work and longer contract durations.

CRA (Corrosion Resistant Alloy)

Industry

Specialised metal used in pipelines and equipment exposed to corrosive fluids like H2S or CO2. Subcontractors must confirm material specs before welding or fabricating, as CRA requires certified procedures and qualified welders. Misidentifying CRA components can cause costly failures and compliance issues.

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