“ADS” means an atmospheric diving system capable of withstanding external pressures greater than atmospheric pressure and in which the internal pressure remains at atmospheric pressure and includes a one-person submarine and the one-atmosphere compartment of a diving submersible (système ADS).
Source: Canada Oil and Gas Diving Regulations, SOR/88-600, February 2013. Regulations
Source: Nova Scotia Offshore Area Petroleum Diving Regulations, SOR/95-189, Canada, current to May 31, 2012. Regulations
automatic disconnect system
Source: Oil & Gas UK, Guidelines on subsea BOP systems, Issue 1, July 2012, Global Standards
Atmospheric diving system.
Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards
Source: API SPEC 17D, Design and Operation of Subsea Production Systems—Subsea Wellhead and Tree Equipment, Upstream Segment, Second Edition May 2011 (Errata September 2011). Global Standards