Q. Horizontal Vessels and Vertical Vessels?

Horizontal Vessels

A horizontal vessel, designed to support a full weight load of water, shall be tested while resting on its support saddles, without additional supports or cribbing.

Vertical Vessels

Short vertical vessels may be shop tested in the erected position, depending on their height and the shop capability.

Tall vertical vessels may be shop tested in the horizontal position. These vessels must be adequately supported during the test to prevent damage.

Vertical vessels being tested in the erected position, whether shop or field shall have consideration given to the additional pressure and weight.