API 650 Tanks-Corrosion of Annular Plate
API 650 Tanks-Corrosion of Annular Plate
(OP)
We have 2 nos 20 Mtr dia Naphtha Storage tanks designed as per API650. These were installed in 1965-66. Till about two years ago we were monitoring corrosion of the external portion of the bottom annular plate. The tanks were moth balled for two years and attempts are now being made to rehabilitate the tanks. We observe extensive corrosion of the annular plate.
While API prohibits patch work repair of the annular plate can anyone in a similiar situation share his experiences with us and tell us what their quick fix solutions were?
Many Thanks
While API prohibits patch work repair of the annular plate can anyone in a similiar situation share his experiences with us and tell us what their quick fix solutions were?
Many Thanks





RE: API 650 Tanks-Corrosion of Annular Plate
Are you aware that there are API standards on storage tank assesment and repair ?
There are many firms that will provide objective, third-party review and propose repair solutions.
Google "storage tank", consultant, repair and API
Review your results.......
MJC
RE: API 650 Tanks-Corrosion of Annular Plate
The APIGUY....
RE: API 650 Tanks-Corrosion of Annular Plate
RE: API 650 Tanks-Corrosion of Annular Plate
Further to MJCronin's response, API STD 653 "Tank Inspection, Repair, Alteration, and Reconstruction" provides guidance on repair of tank bottoms (and remainder of tank), including the use and limitations regarding welded-on patch plates.
Regards,
John