Design Verification (DV) results for components and subassemblies for Deep Life's Open Revolution Rebreathers

There are a large number of these documents: they will all be released but the review process means that these will appear gradually.

	Safety Review of Rebreather Test Processes (8.6MB) This considers the overall safety of the test and verification programme, concentrating on test chambers.
	Verification of Variable Orifice Gas Injector Rev A (1.68MB) Updated 2nd Mar 2007. This is the test and verification report on the Deep Life rebreather Gas Injector. It contains the orifice and control model used to verify the operation of orifice based injectors. A further report will be issued on the first production batch incorporating the modifications described.
	Verification of Fail Safe Oxygen Dosing System in an eCCR (290KB) Verification of the fail safety of the PPO2 control system, including both formal modelling and the results of empiral tests. The results are relevant to mCCRs, needle valve CCRs and SCRs, as well as true electronic variable orifice injectors.
	Oxygen Cells for Dive Applications: Sourcing, Performance, Safety and Reliability. Results of a 6 Year Study (3.6MB) Last updated 29th Mar 07. A study of oxygen cells for EN61508 SIL 4 designs.
	Helium and Pressure Susceptibility of Components used in Electronic Systems (317KMB) A screen of different generic types of electronic components for sensitivity to helium under pressure.
	Power Systems 1: Saphion IFR18650e Li-Ion Cell Characterisation (1024KB) Verification of the suitability of Valence Saphion IFR 18650e rechargeable Li-Ion cells for diving rebreathers, including the charge and discharge characteristics and the accuracy of Deep Life's battery life prediction algorithm when used with these cells.
	Power Systems 2: Rebreather Power Supplies (312KB) Verification and review of the power supplies in the Deep Life O.R. rebreather. This is report 2 of 4 on the O.R. rebreather power systems. Report 3 of 4 is the brown out, drop out, over-voltage and watchdog functions, and is currently part of Volume 5 of the FMECA but will be split out shortly.
	Power Systems 4: Umbilical Terminator Power Supplies (438KB) Review and validation of power supplies in the Umbilical Terminator fitted to the rebreather for commercial diving applications. Report 4 of 4.