Home
Subjects
Explanations
Create
Study sets, textbooks, questions
Log in
Sign up
Upgrade to remove ads
Only $35.99/year
MK 20 - KM37 - Portable Surface Supplied Diving Systems
STUDY
Flashcards
Learn
Write
Spell
Test
PLAY
Match
Gravity
Terms in this set (45)
What are the two types of MK 20 UBAs?
1. MK 20 MOD 0; uses positive pressure and preferred over the MOD 1 for encolsed space diving and in category 3 contaminated water. Has lever
2. MK 20 MOD 1; non positive pressure, preferred when using SCUBA mode with limited air supply. Does not have lever
What is the purpose of the MK 20 Full Face Mask low volume visor?
Reduce the buoyancy effect
How many colors does the MK 20 FFM assembly come in?
3; black gray and yellow
What can be used to achieve a proper seal for the MK 20 FFM?
Tygon tubing
What comprises the FFM inner oral nasal mask assembly?
pressure equalization assembly, microphone, two one way inhalation valves to minimize dead air space
The MK 20 MOD 0 FFM maintains how much positive pressure?
0.03 psi
What are the MK 20 over pressure operating limits?
minimum 90 psig
desired 135 psig
maximum 135 psig
Define how you find the MK20 MMP
bottom pressure + over bottom pressure = MMP
(depth x 0.445) + 135 = MMP
Air supply system must be able to provide an average sustained flow of how much for the MK20?
1.4 acfm to divers
What is the air consumption range for the MK 20 FFM?
0.75-1.5 acfm
Free flow mode deliveres how much air in free flow mode fo the MK 20 FFM?
8 acfm
The MK 20 regulator has a built in relive valve that will lift at what?
210 +/- 35 psig and reset 10 psig below set pressure
how long is the MK 20 hose assembly and what is the rated working pressure?
30 inches long, 250 psi
Emergency gas supply much contain how much pressure?
enough pressure that provide sufficient air to bring the diver to his first decompression stop or to surface
What is the EGS SCUBA first stage regulator set to?
135 psi for SCUBA pack
150 psi for leaving EGS supply top side
Mission maintenance shall be formed how often for extended diving missions?
Every 30 days
Mission maintenance is required before a mission if?
-Equipment has never been used
-Has been idle for more than 18 months
-condition of the equipment is suspect
Pre dive procedures required for MK 20 when?
-to set up for the first dive of the day
-conducted at the beginning of each diving day
What is the MK 20 surface supplied maximum working limit?
60 fsw
How much current requires extra weight for the MK 20?
Currents above 1.5 knot
The KM 37 is capable of controlling how much pressure through the dial a breath?
up to 22.5 psig over bottom pressure
What is the purpose of the gas supply non return valve on the KM 37?
Prevents a reverse flow of gas from the helmet to the umbilical
What is the purpose of the steady flow on the KM37?
defog faceplate
dewater helmet
ventilation
Emergency Gas supply is required for what dive using the KM-37?
Dives deeper than 60 fsw or when diving in enclosed/confined space
The KM37 first stage regulator is set to what over bottom pressure
no lower than 135
The pressure relief valve on the first stage of the KM37 is set to what?
180 +/- psig
Quick disconnect should be turned how many degrees?
180 deg to prevent seperation
Umbilical assembly shall not exceed what length
600
Depth limitation for KM37 on air?
190 fsw normal working limit
285 fsw maximum working limit (exceptional exposure)
Depth limitation for KM37 for HELOX?
300 fsw normal working limit
380 fsw maximum working limit
What is the km37's average sustained flow rate requirement?
1.4 acfm
What is the KM37s air consumption rate?
0.75-1.5 acfm
In the KM37s free flow mode what is the consumption?
greater than 8 acfm
What are the KM37s over bottom pressure requirements?
0-60 fsw; 90 min, 135 desired, 165 max
61-130 fsw; 135 min, 135 desired, 165 max
131-190 fsw; 165 min, 165 desired, 165 max
The MK 3 Lightweight Dive System (LWDS) can be arranged in how many configurations?
1- MOD 0
191 or 1782 sci at 3000 psi
good for 2 divers and one standby to a depth of 130 fsw
2- MOD 1
191 or 1782 sci at 5000 psi
The Fly Away Dive System (FADS) III is capable of supporting dive missions to what depth?
190 fsw
What are the components of the FADS II air system?
Control Console Assembly (CCA)
Volume Tank Assembly (VTA)
Air Supply Rack Assembly (ASRA)
5000 psi compresser system
What does the Control Console Assembly (CCA) do?
reduces the 5000 psi to the required over bottom pressure, overpressure relief valves are set to 300 psig
What are the Volume Tank Assembly (VTA) characteristics?
working pressure 278 psig
pressure relief valves are set to 300 psig
What are the Air Supply Rack Assembly (ASRA) characteristics?
will hold 9600 sci of compressed air at 5000 psi
each flask is double ported and condensate drain will open when temperatures exceed 217 deg F
pnuemofathometer
is open to ambient conditions
synthetic umbilical line minimum strength?
4000 lbs
maximum life of a rubber umbilical hose and synthetic lines?
- 12 yearsime limit
- do not have a maximum lifetime
Pressure and load testing breathing gas/pnuemo?
conducted to 200% the maximum operating pressure, operating pressure for air is 250 psi
Resistance for communication cable testing?
I ohm per 100 feet length
Related questions
QUESTION
Symmetric key encryption is also known as ...
QUESTION
A manufacturer uses only one type of CAM software, but has many different types and brands of CNC machines. How is the programming customized to meet the specifications of each machine?
QUESTION
Where are the four points where pain can be reduced?
QUESTION
Can oxygen be used to check for leaks? If not, why not?
Recommended textbook explanations
Fundamentals of Electric Circuits
6th Edition
Charles Alexander, Matthew Sadiku
2,102 explanations
Electric Circuits
10th Edition
James W. Nilsson, Susan Riedel
1,358 explanations
Fluid Mechanics: Fundamentals and Applications
4th Edition
John Cimbala, Yunus A. Cengel
2,010 explanations
Engineering Mechanics: Statics
13th Edition
R.C. Hibbeler
1,438 explanations
Sets found in the same folder
MK20/KM37/Portable Surface Supplied Diving Systems
66 terms
Scuba Operations
64 terms
BASIC DIVING MEDICINE
111 terms
Drowning & Diving & Altitude Medicine
50 terms
Sets with similar terms
021-06 Electric Systems: Pneumatics, Pressurizatio…
65 terms
Aircraft Pressurization
51 terms
RFD (SCBA)
95 terms
Backflow Prevention Practice Exam
100 terms
Other sets by this creator
Section 5 MES (Concrete placement, Fleet Mooring I…
19 terms
Small Boat OPS
18 terms
Demo Test 2
24 terms
Demolition
56 terms
Other Quizlet sets
Financial Literacy (Percent of a Number)
13 terms
Traumatic Disorders, Suicide (ch. 9, 18, 19)
70 terms
Science test Monday
121 terms
MUSC 140 Exam #1
68 terms
Verified questions
ENGINEERING
The force required to compress the gas in a gas spring a distance x is given by $F=\frac{\text { Constant }}{x^{k}}$ where the constant is determined by the geometry of this device and k is determined by the gas used in the device. One such device has a constant of $200 \text { lbf } \cdot \text { in }^{1.4}$ and k = 1.4. Determine the work, in Btu, required to compress this device from 2 in to 7 in.
ENGINEERING
Use MATLAB to plot the functions $y = 4 \sqrt { 6 x + 1 }$ and $z = 5 e ^ { 0.3 x } - 2 x$ over the interval $0 \leq x \leq 1.5 .$ Properly label the plot and each curve. The variables $y$ and $z$ represent force in newtons; the variable $x$ represents distance in meters.
ENGINEERING
What safety precautions should you take when driving in deserts?
ENGINEERING
Water flows through a tee in a horizontal pipe system. The velocity in the stem of the tee is 15 ft/s, and the diameter is 12 in. Each branch is of 6 in. diameter. If the pressure in the stem is 20 psi, calculate magnitude and direction of the force of the water on the tee if the flow rates in the branches are the same.