Operators are required to submit their data to the NPMS every 12 months, or to notify the NPMS National Repository
if there have been no changes from the previous submission. In order to align NPMS submissions with Annual Reports,
operators are required to use the same OPID to report assets to the NPMS as they use in their Annual Report.
Operators are also requested to submit their gas pipelines to the NPMS between 1/1 and 3/15 of each year reflecting
assets as of 12/31 the previous year and to submit liquid pipelines between 1/1 and 6/15 of each year,
reflecting assets as of 12/31 the previous year. Please use the NPMS Data Reviewer
application to review your data for changes and/or to notify the NPMS National Repository that your submission has not changed.