{"operation":"document","citation":"PHMSA 25-352823","title":"AMEREN ILLINOIS COMPANY — Integrity Assurance Notification","source_type":"inspection","agency":"Pipeline and Hazardous Materials Safety Administration","status":"historical","official":true,"published_on":"2025-09-03","effective_on":"2025-09-03","summary":"GAS TRANSMISSION in IL; LATERAL RMV ALTERNATIVE TECHNOLOGY; PHMSA status: RESOLVED.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-leading-ian-25-352823-operator-32513.json","markdown":"https://regulus.evalyn.ai/document/phmsa-leading-ian-25-352823-operator-32513.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-leading-ian-25-352823-operator-32513","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/data_statistics/pipeline/SRCR_and_Integrity_Assurance_Notifications.zip","body":"Ameren Illinois Company (AIC) hereby provides notification, in accordance with 49 CFR §192.18, of its plans to implement alternative equivalent technology (AET) in place of rupture mitigation valves (RMVs) on its intrastate natural gas transmission system in Illinois. AIC plans to utilize Mooney FlowgridTM Slam Shut Valves (Slam Shut Valves) as an AET to RMVs, at selected pressure regulating stations on laterals connected to a mainline Shut-Off Segment [1]. This approach is intended to meet the RMV requirements specified in 49 CFR §192.179 and §192.634.","truncated":false,"body_characters":559}