Deep Life Group's safety design process was certified to
meet IEC EN 61508, the Gold Standard in Functional Safety
and High Integrity - this is regarded as the "Gold Standard"
from which many industries have produced more manageable
subsets in safety standards covering nuclear, rail, air,
medicine and chemistry. All Open Safety products
designed and managed in accord with that process can be
certified to EN 61508, up to SIL 3.
In IEC EN 61508, a lot of emphasis is put on the safety of
electronics and software but the standard is end-to-end,
covering all mechanics and even the user's training, the
user manuals, and our follow up - including our life
guarantee. It has been applied to every aspect
of our rebreathers.
Our products also meet CE EN 14143, EN144, EN250, NORSOK
U101 and a host of other standards. The reports below
are the safety data used as evidence used to support the
Technical Files for each of those standards.
This project was so technologically revolutionary, the
project name prior to product release in Deep Life Group,
was "Open Revolution": the Open referring to the open
disclosure of the safety data, and the Revolution referring
to the first time any dive system has been designed and
built to meet Functional Safety standads.
The main safety data is contained in the following document
Integrity Level Assignment for Dive Systems
The EN61508 Safety Integrity Level assessment and
assignment for the different subsystems and
applications for rebreathers. The SIL assignment for
eSCR and eCCR is SIL 3 to 4, the communications has a
SIL assignment of SIL 2, independent PPO2 monitor is
assigned SIL 2, Topside monitoring software is
assigned SIL 1.
Maths models for the rebreather, its environment, and
decompression algorithms. These are in Matlab and
Simulink for ease of use, and for Monte Carlo testing
of independently written code.
Database and Reviews
The Comprehensive Database of Rebreather Fatal
Accidents, and incident analysis: a data-mine that can
improve safety in the design and training processes.
These are the detailed test and validation reports
that identify the limits of each subassembly.
A selection from the Formal HAZOP and safety review
reports. The HAZID reviews also contribute to Volume 6
of the FMECA.
There are 10 volumes in total covering the whole
design, from top down and from bottom up, for the
electronics, software and mechanics, including a Fault
Presentations on Open Safety's family of rebreathers.
Full set of exploded drawings for the Open Revolution
family of rebreathers.