U.S. Department of TransportationPipeline and Hazardous Materials Safety Administration

~NPMS ~National Pipeline Mapping System

www.npms.phmsa.dot.gov

U.S. Department of TransportationPipeline and Hazardous Materials Safety Administration

What is NPMS?• National GIS dataset of gas transmission and hazardous liquid

pipelines, LNG facilities, and breakout tanks (voluntary) from data submitted by operators

• NPMS data can be viewed online through– PIMMA – access for local government, password-protected – Public Viewer - open access, view one county per session, no password

needed• Raw NPMS dataset for import into local government GIS

system (such as ESRI ArcGIS)• Does not contain information on interconnects, pump and

compressor stations, valves, direction of flow, capacity, throughput, or operating pressure.

• Does not contain distribution and gathering pipelines.

U.S. Department of TransportationPipeline and Hazardous Materials Safety Administration

Pipeline Attributes• PHMSA-assigned operator identification number • Operator name & contact information• System name • Subsystem name • Diameter (voluntary) • Commodities transported • Interstate/intrastate designation • Operating status (in service, abandoned, retired) • Geospatial accuracy estimate (nominal accuracy is +/-500’)• Required to be updated annually

U.S. Department of TransportationPipeline and Hazardous Materials Safety Administration

PIMMA vs. the Public ViewerPIMMA• Allows user to view, query, and

print custom pipeline maps• Federal users can see the entire

U.S. pipeline network• High Consequence Area (HCA)

layers are visible• Zoom extent is unlimited• Sensitive attributes (diameter

and data accuracy) are visible

Public Viewer• Allows user to view, query, and

print custom pipeline maps• Extent is limited to one county

per session• High Consequence Area

population layers are visible; drinking water and ecological layers are not

• Zoom extent is limited to 1:24,000

• Sensitive attributes (diameter and data accuracy) are not visible

U.S. Department of TransportationPipeline and Hazardous Materials Safety Administration Public Viewer

U.S. Department of TransportationPipeline and Hazardous Materials Safety Administration PIMMA

U.S. Department of TransportationPipeline and Hazardous Materials Safety Administration

Role of NPMS within PHMSA

PHMSA uses NPMS data for tasks such as• Asset management and analysis• Emergency response• Decision support and policy making• Inspection preparation• Validating Annual Report statistics and mileage• Locating noncompliant operators

…The NPMS website receives 6,000+ visitors per monthwww.npms.phmsa.dot.gov

U.S. Department of TransportationPipeline and Hazardous Materials Safety Administration

Future Direction• Integrating NPMS pipeline data with tabular datasets such as

inspection records, accident/incident reports, and special permit data

• Creating a “history” for each pipeline segment which will allow PHMSA to track its operator and records over time

• Considering rulemaking to expand attributes collected and improve data accuracy