StacksVerified U.S. regulatory reference

30 CFR §250.423

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
You must ensure proper installation of casing in the subsea wellhead or liner in the liner hanger.
  1. (a)You must ensure that the latching mechanisms or lock down mechanisms are engaged upon successfully installing the casing string.
  2. (b)If you run a liner that has a latching mechanism or lock down mechanism, you must ensure that the latching mechanisms or lock down mechanisms are engaged upon successfully installing the liner.
  3. (c)You must perform a pressure test on the casing seal assembly to ensure proper installation of casing or liner. You must perform this test for the intermediate and production casing strings or liners.
    1. (1)You must submit for approval with your APD, test procedures and criteria for a successful test.
    2. (2)You must document all your test results and make them available to BSEE upon request.