Which of the following statements about installing roll jacket on a vertical vessel is correct?

a. The first course of jacket is critical to leveling the entire installation.
b. Jacket installation begins at the top of the vessel sidewall and works down.
c. Longitudinal seams are secured with banding.
d. Circumferential seams are secured with screws.


a. The first course of jacket is critical to leveling the entire installation.

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