Ssr90 Flashcards
(14 cards)
What is the lifespan of the SSR 90 M oxygen breathing apparatus?
At least 90 minutes
According to European Norm Standard at a medium heavy workload.
What is the purpose of the SSR 90 M?
At a medium/ heavy workload is essential to rescue conscious trapped miners.
What type of breathing apparatus is the SSR 90 M?
A self-contained closed-circuit oxygen breathing apparatus.
What is the active chemical used in the SSR 90 M?
Potassium dioxide (KO₂).
How is oxygen generated in the SSR 90 M?
By the reaction of exhaled breath containing CO₂ and water vapor with the chemical in the canister.
What factors affect the rate of oxygen production in the SSR 90 M?
The demand of the wearer, which is influenced by their breathing rate.
What happens to oxygen production when the wearer breathes deeply?
The oxygen-generating chemical will more than satisfy the wearer’s requirements.
What is the total weight of the SSR 90 M unit in its case?
6.7 kg (14.7 lb).
What is the weight of the SSR 90 M unit itself?
4.7 kg (10.3 lb).
What occurs when the wearer begins to move vigorously while using the SSR 90 M?
The increased demand for oxygen is satisfied immediately.
What are the five main parts of the apparatus?
- Facemask and mouthpiece
- Breathing bag and breathing tube
- Oxygen-generating canister
- Carrying harness
- Stainless steel carrying case
These parts work together to provide a functional respiratory apparatus.
What features does the full-facemask include?
- Foldable design
- Twin lens
- Speaking diaphragm
- Threaded breathing tube connection
The facemask is designed for effective communication and usability.
What additional components are included with the mouthpiece?
- Threaded breathing tube connection
- Noseclip
- Goggles
These components are provided for special applications.
How is the breathing tube connected to the breathing bag?
The breathing tube is connected to the valve housing on the top of the breathing bag.
This connection allows for the passage of air during breathing.
