True or False? As used in NFPA 54, CSST means Corrugated Stainless Steel Tubing.

The correct answer is that as defined in NFPA 54, CSST indeed stands for Corrugated Stainless Steel Tubing. This type of tubing is commonly used for natural gas and propane fuel systems due to its flexibility and ease of installation. CSST provides a reliable and efficient way to transport gases in residential, commercial, and industrial applications. The standards outlined by the National Fire Protection Association (NFPA) ensure that such materials are used safely and effectively.

The other options suggest either a misunderstanding of the term or limit its use to specific applications, which is not accurate, as CSST is applicable in both residential and commercial settings according to NFPA guidelines. Therefore, the broad application and recognition of CSST is why the statement is true.