NTL 1998-N16 - American Petroleum Institute (API) Specification 6D (SPEC 6D), Specification for Pipeline Valves (Gate, Plug, Ball, and Check Valves), 21st Edition (March 31, 1994), and Supplements 1 and 2 - October 28, 1998

We are concerned that allowable minimal leakage rates for metal-to-metal valve seats included in Supplements 1 and 2 might diminish the operational safety of OCS pipelines. Therefore, we will not adopt these supplements as documents incorporated by reference under 30 CFR Part 250.