{"operation":"document","citation":"PHMSA 24-322375","title":"NORTHERN NATURAL GAS CO — Integrity Assurance Notification","source_type":"inspection","agency":"Pipeline and Hazardous Materials Safety Administration","status":"historical","official":true,"published_on":"2024-09-12","effective_on":"2024-09-12","summary":"GAS TRANSMISSION in MN,WI; MAOP RECONFIRMATION METHOD 6; PHMSA status: RESOLVED.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-leading-ian-24-322375-operator-13750.json","markdown":"https://regulus.evalyn.ai/document/phmsa-leading-ian-24-322375-operator-13750.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-leading-ian-24-322375-operator-13750","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/data_statistics/pipeline/SRCR_and_Integrity_Assurance_Notifications.zip","body":"Northern has a small number of pipelines with an established MAOP higher than the source pressure MAOP, which historically operate below 30% SMYS. Northern intends to lower the MAOP on these branch lines to align with the source pipeline's MAOP. After this documentation alignment, the lower MAOP will be less than 30% SMYS based on paragraph 192.624(a)(2).","truncated":false,"body_characters":357}