... Abstract The paper describes the Rapid Gas Decompression (RGD) process and how it occurs in Subsea Boosting & Pumping Systems (SBPS). It describes potential subsea equipment damage and how it can be prevented, or reduced, by elements of equipment design, seal choice and equipment...

... testing that simulates the field environments must be conducted. This paper covers the topic of seal-system performance testing, which should be investigated in addition to basic material properties. Performance tests include extrusion resistance, rapid-gas decompression, compression set, and compressive...

... about 5 years heavy discussion. New standardization activity has been launched according to the regulations at API in 1998 (the Standards have to be renewed after 5 years use). choke prototype test kill line hose rapid decompression independent verification agent gas service bend...

... line subsea application flexible line construction subsea system application coupling high pressure gas service mpa saturation pressure annular pressure drilling upstream oil & gas decompression kill line choke drillstem/well testing offshore technology conference reinforcement...

.... otc 6073 marseille inerted area pressurization upstream oil & gas dive decompression industrial gases hydrogen offshore hydra viii diver installation saturation dive operation hydrogen diving helium comex subsea system offshore technology conference oxygen hydrogen nitrogen...

... ABSTRACT A computer data bank set up by Comex to process diving reports has been used to control and improve diving procedures. Analysis of 5744 early saturation dives proved the existence of an optimum ascent rate for saturation decompressions with a 600 mbar chamber P0 2 . New saturation...

... placed within the cable improve crush resistance from 500 Ibs./cable in. with conventional cable to 3000 lbs./cable in., while at the same time enhancing decompression strength. The manner in which the new design increases edge protection, eases installation handling, enhances abrasion resistance...

... understood. Because it has implications to safety in diving operations, in decompression and in therapy of decompression sickness, this description will define conditions in which potential hazard due to isobaric counter diffusion exists and conditions in which it does not. BACKGROUND Over the more than...

... experiments involving three different water depths ranging from 1 to 1000 feet are in the planning stages. In addition, expansion tube experiments will be conducted to investigate decompression of nitrogen gas into water since the ductile fracture process is greatly influenced by decompression...

... on MAY 24 at 1. 20 A.M. where they stayed for 80 minutes before decompression. The various physiological results obtained during this experimental dive permit to be optimistic with regard to the feasibility of industrial underwater work in the 1500 feet range. In view of the results obtained during...

... Introduction: Constraints Of Commercial Diving Like other areas of technological development, the history of commercial diving shows us again that problems, as they arise are overcome by new technology. The plague of decompression sickness from all but the shallowest of air dives was reduced...

... decompression compression tremor convulsion OFFSHORE TECHNOLOGY CONFERENCE 6200 North Central Expre~sway Dallas, Texas 75206 . PAPER NUMBER OTe 1435 THIS IS A PREPRINT SUBJECT TO CORRECTION Simulated Oxygen-Helium Saturation Diving to 1500 Ft and the Helium Barrier By Peter B. Bennett, Royal Naval...

... consuming tasks. When the job is completed they can decompress slowly and return to the surface. In a recent application six (6) divers accomplished the task of connecting five small flanged pipelines to a subsea wellhead in water over 340 feet deep. The job required 42 hours bottom time and was completed...

... are necessary if this is to occur. These challenges include the development of life support systems to supply the diver with properly controlled breathing mixtures, clothing to protect him from the cold subsea environment, and pressure chambers to allow him to be properly compressed and decompressed to and from...