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IndustryGlossary Term

Failure Assessment Diagram (fad)

A FAD is an engineering tool used to assess whether a crack or defect in a component is safe to operate or requires immediate repair. Subcontractors use FAD assessments to support fitness-for-service decisions on pressurised piping, vessels, and structural welds. Results directly influence repair scopes, shutdown planning, and liability on field service contracts.

Related Terms

Bill of Materials

Industry

A BOM (Bill of Materials) is an itemised list of all parts, materials, and components needed to complete a field job. Subcontractors use it to price work accurately and track material costs against their scope. It also supports invoicing and helps avoid disputes over what was supplied on site.

Production Hookup

Industry

The final phase of connecting a well or facility to live production infrastructure, including pipelines, separators, and metering equipment. For subcontractors, it typically means intensive, time-sensitive scope with strict sequencing requirements. Delays can trigger penalties, making accurate scheduling and crew readiness critical.

Legacy Well

Industry

An older well built to outdated standards that may require specialised remediation, abandonment, or workover services. Subcontractors should expect non-standard equipment configurations and additional compliance requirements. Scope creep and unforeseen costs are common on legacy well projects.

Hub

Industry

In field logistics, a central staging location where crews, equipment, and materials are coordinated before deployment to remote job sites — the hub determines mobilisation routes, laydown areas, and logistical costs. In natural gas markets, a physical or virtual trading point where gas is bought, sold, and priced; hub pricing (AECO in Alberta, Henry Hub in the U.S.) directly affects contract rates and fuel costs for field service companies.

MTPA (Million Tonnes Per Annum)

Industry

A measure of a facility's annual production or processing capacity, expressed in millions of tonnes. Larger MTPA ratings typically signal longer project durations and higher subcontractor labour demand. Knowing a site's MTPA helps field service companies anticipate scope size and resource requirements.

Npv10 (net Present Value At 10% Discount Rate)

Industry

A method operators use to value oil and gas reserves by discounting future cash flows at 10% annually. Higher NPV10 signals a healthier client who can fund long-term projects and honour contracts. Subcontractors can use it to gauge whether a prospect client's asset base justifies pursuing work with them.

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