HandlingHighPressureCylinders
Quiz settings
Property / SettingPassing score / 80%
Display Point Value / Yes
Randomize Questions / Yes
Total Number of Questions / 15
Total Number of Questions to Ask / All
Display User Score / Yes
Display Passing Score / Yes
Display Pass/Fail Messages / Yes
Email recipient
Questions
Multiple Choice, 10 points, 1 attempt(s) permitted.
1. _____ requires all scientific divers to receive hazardous materials training for handling high pressure cylinders.
Correct / Choice / FeedbackX / AAUS and NOAA scientific diving standards / Correct
CFR Title 29: 1910 Sub Part T / Incorrect: AAUS and NOAA scientific diving standards require all scientific divers to receive hazardous materials training for handling high pressure cylinders.
OSHA / Incorrect: AAUS and NOAA scientific diving standards require all scientific divers to receive hazardous materials training for handling high pressure cylinders.
Individual State's Department of Transportation / Incorrect: AAUS and NOAA scientific diving standards require all scientific divers to receive hazardous materials training for handling high pressure cylinders.
True/False, 10 points, 1 attempt(s) permitted.
2. DOT regulations found in 49 CFR 172.700 mandate training requirements for employees of companies involved in commerce who handle compressed gas cylinders.
Correct / ChoiceX / True
False
Feedback when correct: Correct
Feedback when incorrect: Incorrect
Multiple Choice, 10 points, 1 attempt(s) permitted.
3. The codes 3AA 2250 PST 4~08+ stamped into the neck of a cylinder indicate:
Correct / Choice / FeedbackX / This is a steel cylinder with a rated working pressure of 2250 psi, manufactured by Pressed Steel, hydrostatically tested in April of 2008, and capable of being over filled by 10%. / Correct
This is an aluminum cylinder with a rated working pressure of 2250 psi, manufactured by Pacific Scuba Tanks, hydrostatically tested in April of 2008, and capable of being over filled by 10%. / Incorrect; these codes would indicate this is a steel cylinder (3AA) with a rated working pressure of 2250 psi, manufactured by Pressed Steel (PST), hydrostatically tested in April of 2008 (4 08), and capable of being over filled by 10% (+).
The serial number of the cylinder. / Incorrect; these codes would indicate this is a steel cylinder (3AA) with a rated working pressure of 2250 psi, manufactured by Pressed Steel (PST), hydrostatically tested in April of 2008 (4~08), and capable of being over filled by 10% (+).
This is a steel cylinder with a rated working pressure of 2250 psi, manufactured by Pressed Steel; last visually inspected in April of 2008, and capable of being over filled by 10%. / Incorrect; these codes would indicate this is a steel cylinder (3AA) with a rated working pressure of 2250 psi, manufactured by Pressed Steel (PST), hydrostatically tested in April of 2008 (4~08), and capable of being over filled by 10% (+).
Multiple Choice, 10 points, 1 attempt(s) permitted.
4. It is June 2008; a fill station operator conducting a pre-filling survey of a cylinder finds the hydrostatic test dates of 2 98+ and 10 04. The cylinder has a current VIP sticker, all other required markings, and shows no signs of dents, bulges, scrapes or line corrosion. The fill station operator:
Correct / Choice / FeedbackX / can fill the cylinder, but only to the rated working pressure since the current hydrostatic test mark does not have a +. / Correct
should not fill the cylinder because the current hydrostatic test mark does not have a +. / Incorrect; the lack of the + with the current hydrostatic test stamp indicates the cylinder should no longer receive the 10% overfill.
should not fill the cylinder because the current hydrostatic test has passed the five year limit for the test. / Incorrect; the lack of the + with the current hydrostatic test stamp indicates the cylinder should no longer receive the 10% overfill.
can fill the cylinder to a pressure 10% greater than the cylinder's rated working pressure because of the presence of the + on the cylinder. / Incorrect; the lack of the + with the current hydrostatic test stamp indicates the cylinder should no longer receive the 10% overfill.
Multiple Response, 10 points, 2 attempt(s) permitted.
5. It is November 2008; a fill station operator conducting a pre-filling survey of a cylinder finds the hydrostatic test dates of 2 97 and 10 03. The cylinder has a VIP sticker dated 10/07. It has the stamp 3AL, along with all other required markings, and shows no signs of dents, bulges, scrapes or line corrosion. (Select all that apply)
Correct / ChoiceX / The cylinder is "out of hydro"; it has been longer than five years since the last hydrostatic test.
This cylinder is within its second hydrostatic test period.
X / The cylinder does not have a current VIP.
This is a steel cylinder.
X / This is an aluminum cylinder.
The cylinder has a current VIP.
The fill station operator should fill this cylinder.
X / The fill station operator should not fill this cylinder.
Feedback when correct: Correct
Feedback when incorrect: Incorrect
Multiple Response, 10 points, 2 attempt(s) permitted.
6. Safe handling procedures for high pressure cylinders include: (select all that apply)
Correct / ChoiceX / Wear shoes when working around cylinders.
X / Store charged cylinders in an upright position in a cool shady place and away from flammable materials.
Handling cylinders by straps or backpack is preferred to handling cylinders by the valve.
X / Cylinders that appear to be damaged by fire or physical abuse should be removed from service.
X / Scuba cylinders should receive a visual inspection by a qualified inspector annually.
X / Internal inspections, hydrostatic tests, and repair work should be performed only by trained technicians.
A cylinder that has been condemned during the visual inspection or hydrostatic testing process may be returned to service after repairs have been completed.
Feedback when correct: Correct
Feedback when incorrect: Incorrect
Multiple Choice, 10 points, 1 attempt(s) permitted.
7. _____ is the most economical use of banked gas.
Correct / Choice / FeedbackX / Cascade filling / Correct
Single bank filling / Incorrect; Cascade filling is the most economical use of banked gas.
Filling directly from the compressor / Incorrect; Cascade filling is the most economical use of banked gas.
The use of high pressure scuba cylinders / Incorrect; Cascade filling is the most economical use of banked gas.
Multiple Response, 10 points, 1 attempt(s) permitted.
8. Select all that apply to the valve pictured here:
Correct / ChoiceX / This is an example of a Ball valve
This is an example of a Metering valve
This valve provides for slow and controlled pressure adjustments
X / This valve is either open or closed providing no means of pressure adjustments
Feedback when correct: Correct
Feedback when incorrect: Incorrect
Matching Drag and Drop, 10 points, 2 attempt(s) permitted.
9. Match the item with its counterpart:
Choice / MatchCascade filling / Equalizing the pressure in the cylinder being filled with the pressure in a single cylinder in a series of storage cylinders, moving to the next cylinder in the series and repeating the process until the desired pressure is reached.
A ball valve / Is either open or closed.
A metering valve / Provides for slow and controlled pressure adjustments.
4,500 psi / 310 bar
Allows for cascade filling / A series of storage cylinders connected by manifold to produce a desired storage capacity.
A single large storage cylinder such as a recycled submarine ballast tank / Can offer the advantage of not requiring periodic hydrostatic testing.
300-600 psi or 20-41 bar / The rate per minute for filling cylinders.
5 to 10 minutes / The amount of time it should take to properly fill a 3000 psi (207 bar) cylinder.
About 30 minutes / The amount of time it will take someone with a surface air consumption of 20 psi/minute to breathe 2500 psi from a scuba cylinder while diving in 99 feet of seawater.
Feedback when correct: Correct
Feedback when incorrect: Incorrect
Multiple Response, 10 points, 2 attempt(s) permitted.
10. Select all of the items listed that the fill station operator should do before filling a cylinder:
Correct / ChoiceX / Verify the cylinder has valid ICC or DOT stampings
X / Check for a current Hydrostatic Test Stamp
X / Verify a current visual inspection sticker (within the past year)
X / Verify the cylinder has a valve with a pressure relief device
X / Check that there is air/gas in the cylinder
X / Check the rated pressure of the cylinder
X / Check the pressure in the cylinder and its contents (air, nitrox, etc.)
X / Verify the general condition of the cylinder
Open the bleed valve on the fill whip
Close the cylinder valve
Feedback when correct: Correct
Feedback when incorrect: Incorrect
True/False, 10 points, 1 attempt(s) permitted.
11. Putting part of your body in the air stream of an open high pressure cylinder valve can lead to embolism.
Correct / ChoiceX / True
False
Feedback when correct: Correct
Feedback when incorrect: Incorrect
True/False, 10 points, 1 attempt(s) permitted.
12. Preferably, cylinders should be transported and stored in a secure, upright position.
Correct / ChoiceX / True
False
Feedback when correct: Correct
Feedback when incorrect: Incorrect
Multiple Choice, 10 points, 1 attempt(s) permitted.
13. Caution should be taken when using fill panels employing _____ valves, a rapid pressure spike can increase the risk of a fire in the presence of gases with high oxygen content.
Correct / Choice / Feedbackmetering / Incorrect: Caution should be taken when using fill panels employing ball valves; a rapid pressure spike can increase the risk of a fire in the presence of gases with high oxygen content.
X / ball / Correct
J / Incorrect: Caution should be taken when using fill panels employing ball valves; a rapid pressure spike can increase the risk of a fire in the presence of gases with high oxygen content.
K / Incorrect: Caution should be taken when using fill panels employing ball valves; a rapid pressure spike can increase the risk of a fire in the presence of gases with high oxygen content.
yoke / Incorrect: Caution should be taken when using fill panels employing ball valves; a rapid pressure spike can increase the risk of a fire in the presence of gases with high oxygen content.
DIN / Incorrect: Caution should be taken when using fill panels employing ball valves; a rapid pressure spike can increase the risk of a fire in the presence of gases with high oxygen content.
True/False, 10 points, 1 attempt(s) permitted.
14. The Fill Station Operator has the responsibility to reject cylinders that do not meet standards.
Correct / ChoiceX / True
False
Feedback when correct: Correct
Feedback when incorrect: Incorrect
Multiple Choice, 10 points, 1 attempt(s) permitted.
15. Only individuals _____ in the handling and filling of high pressure cylinders should be in the room when cylinders are being filled.
Correct / Choice / FeedbackX / trained
interested
participating
tasked