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Author Question: A cylinder has DOT 3AA 2015 stamped on it. What does the 3AA stand for? a. Ownership mark c. ... (Read 152 times)

RYAN BANYAN

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on: Jul 16, 2018
A cylinder has DOT 3AA 2015 stamped on it. What does the 3AA stand for?
 
  a. Ownership mark c. Nonheat-treated carbon-steel
  b. Manufacturer's mark d. Heat-treated, high-strength steel

Question 2

An asterisk following the reexamination date on a cylinder indicates that the cylinder:
 
  a. has passed the test. c. must be retested every 10 years.
  b. must be retested every 5 years. d. has been sold to another company.


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Sarahjh

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: D
3AA stands for heat-treated, high-strength steel. Type 3A cylinders are made of carbon-steel (nonheat-treated).

Answer to Question 2

ANS: C
An asterisk after the reexamination date on the cylinder markings (see Figure 3-4) indicates that the cylinder must be retested every 10 years.


RYAN BANYAN

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Reply 2 on: Jul 16, 2018
Thanks for the timely response, appreciate it

nathang24

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Reply 3 on: Yesterday
Excellent

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