vocabulary: name: Williams Companies Vocabulary description: >- Domain vocabulary for Williams Companies natural gas pipeline infrastructure, covering pipeline operations, gas nominations, transportation contracts, FERC regulatory terms, and midstream energy services. version: '1.0' created: '2026-05-03' modified: '2026-05-03' tags: - Energy - Natural Gas - Pipeline - Midstream - Nominations - FERC - Infrastructure terms: - term: Transco definition: >- Transcontinental Gas Pipe Line Company, LLC — the nation's largest-volume natural gas pipeline system, operated by Williams, spanning 10,000 miles from south Texas to New York City. category: Pipeline System tags: - Pipeline - Transco - Infrastructure - term: Nomination definition: >- A shipper's formal request submitted to a pipeline to transport a specific quantity of natural gas between defined receipt and delivery points during a given scheduling period. category: Operations tags: - Nominations - Operations - Scheduling - term: Dekatherm (Dth) definition: >- The standard unit of energy measurement used in natural gas transactions, equal to 10 therms or approximately 1,000 cubic feet of natural gas. category: Measurement tags: - Measurement - Units - Energy - term: EBB (Electronic Bulletin Board) definition: >- A FERC-mandated online portal that interstate natural gas pipelines must maintain to post capacity availability, tariff information, and enable customers to submit nominations and capacity transactions. category: Regulatory tags: - FERC - Regulatory - Portal - term: 1Line definition: >- Williams' proprietary online portal and electronic bulletin board platform used by Transco customers to submit nominations, manage contracts, and access pipeline information. category: Platform tags: - Portal - Platform - Transco - term: Flat File definition: >- A standardized data file format (CSV or fixed-width) used for bulk submission of nominations and capacity transactions to Williams pipeline systems, as an alternative to EDI or online screen entry. category: Integration tags: - Integration - EDI - Data - term: EDI (Electronic Data Interchange) definition: >- The structured electronic exchange of business documents between pipeline operators and shippers, used for nomination submission, capacity release, and confirmation in compliance with FERC regulations and NAESB standards. category: Integration tags: - EDI - Integration - NAESB - term: FERC definition: >- The Federal Energy Regulatory Commission — the U.S. federal agency that regulates interstate transmission of natural gas, electricity, and oil, establishing tariff requirements and operational standards for pipelines like Transco and Northwest Pipeline. category: Regulatory tags: - FERC - Regulatory - Government - term: NAESB definition: >- North American Energy Standards Board — the industry organization that develops data exchange standards (including EDI and flat file formats) used for natural gas and electricity business processes. category: Standards tags: - NAESB - Standards - EDI - term: Receipt Point definition: >- A location on a natural gas pipeline where gas is physically received from a shipper, producer, or another pipeline, also known as an injection point. category: Operations tags: - Operations - Infrastructure - term: Delivery Point definition: >- A location on a natural gas pipeline where gas is delivered to a shipper, customer, or connecting pipeline, also known as a withdrawal point. category: Operations tags: - Operations - Infrastructure - term: Firm Transportation definition: >- A type of pipeline transportation service that provides guaranteed capacity for gas delivery, with the pipeline obligated to transport the contracted quantities regardless of system conditions. category: Services tags: - Transportation - Services - Contracts - term: Interruptible Transportation definition: >- A type of pipeline transportation service that can be curtailed by the pipeline when system capacity is needed for firm service customers. category: Services tags: - Transportation - Services - Contracts - term: Northwest Pipeline definition: >- An interstate natural gas pipeline operated by Williams serving the Pacific Northwest and parts of the western United States, with its own EBB portal and nomination system. category: Pipeline System tags: - Pipeline - Northwest - Infrastructure - term: MountainWest Pipeline definition: >- An interstate natural gas pipeline operated by Williams serving Utah, Wyoming, and Colorado, integrated with Williams' pipeline network and EBB portal systems. category: Pipeline System tags: - Pipeline - Mountain West - Infrastructure - term: Midstream definition: >- The segment of the oil and gas industry that encompasses processing, storage, transportation, and marketing of natural gas and petroleum between upstream production and downstream distribution/end use. category: Industry tags: - Midstream - Energy - Industry - term: Compressor Station definition: >- A facility along a natural gas pipeline that uses gas-driven or electric compressors to maintain pipeline pressure and ensure adequate gas flow across long distances. category: Infrastructure tags: - Infrastructure - Operations - term: Peak Design Capacity definition: >- The maximum volume of natural gas a pipeline system can transport per day under peak demand conditions, measured in dekatherms per day (Dth/d). Transco's system peak design capacity is 19.5 million Dth/d. category: Capacity tags: - Capacity - Operations - Infrastructure