2026-01675: Pipeline Safety: Advisory Bulletin on the Integrity Risks of Type A Repair Sleeves
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PHMSA is issuing this advisory bulletin to highlight the integrity risks associated with using Type A sleeves to repair hazardous liquid pipelines. Type A sleeve failures have resulted in significant environmental damage and costs to the industry. Incident data suggests these failures were due to improper installation, moisture intrusion, and the selection of ineffective assessment methods. This bulletin provides specific technical details for managing the integrity of Type A sleeves.
The agency’s own summary, as published.
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