Semantic search
Jump to navigation
Jump to search
Start date | Reporting criterion | Title | Event description | System | LER | |
---|---|---|---|---|---|---|
ENS 46289 | 29 September 2010 04:00:00 | 10 CFR 21.21, Notification of failure to comply or existence of a defect and its evaluation | Potential Issues with Certain Regulator Model 77N-40 Air Regulators | Dresser Masoneilan initiated a 10 CFR Part 21 investigation because of the failure of three (3) Air Regulators (model number 77N-40) at the PSE&G Salem Station within three months of being installed. Upon testing and evaluation, Dresser Masoneilan concluded that the internal O-ring used for pressure isolation in the Air Regulators were damaged during factory assembly contributing to the failure of the units to regulate pressure. Dresser Masoneilan has developed a corrective action plan and an in-service test method and acceptance criteria to determine if a unit is experiencing pressure loss due to the issue. Due to the volume, age and distribution of these models, Dresser Masoneilan is issuing a general notice to all utilities. Contact Bill Comeau of Dresser Masoneilan at (508) 941-5477 with any questions concerning this notification. |