scope:

Applicable tanks must meet all of the following criteria.

1) The internal pressure at the top of the stored liquid cannot be greater than tanks listed and described in API's Specification 12B.

2) The tanks must be freely vented.

3) All tanks must have a shell thickness of

4) Existing tanks may have been fabricated from uncoated carbon steel, but many will have been fabricated from coated carbon steel or galvanized steel.

• See page 90, regarding the possibility of finding aluminum top-decks (roofs) during the inspection process.

• The use of aluminum was not permitted within past editions of API Specification 12B.

5) All tank repairs must be inspected, after the repair is performed, by an Approved Inspector to ensure compliance with the applicable inspection standard, recommended practice or specification.

6) Tanks must have an operating of

7) Intentionally left blank.

8) All tanks covered in this publication are to be designed, fabricated, and constructed in such a fashion as to have them declared a bolted CHIME tank.