Apparatus and method for monitoring the integrity of a weld seam

A method of fabricating a weld seam monitoring apparatus comprising the steps of:

• a. Preparing the surface of the weld seam and the area around the weld seam;
• b. Applying sealant to the area around the weld seam;
• c. Attaching the first layer of sheet material such that it overlies the weld seam;
• d. Attaching the second layer of sheet material such that it overlies the first layer of sheet material;
• e. Applying a layer sealant over the second layer of sheet material, the layer of sealant extending over the sealant applied around the weld seam;
• f. Connecting a vacuum source to a space formed about the first layer of sheet material.

A method of monitoring a weld seam comprising the steps of applying a weld seam monitoring apparatus including:

• a. A layer of sealant applied to the area surrounding the weld seam;
• b. A first layer of sheet material adapted to provide an air space and overlying the weld seam;
• c. A second layer of sheet material overlying the first layer of sheet material;
• d. A fluid impermeable sealant overlying the second layer of sheet material.
• wherein an air tight space is formed between the second layer of sheet material and the weld seam, the apparatus further including a vacuum source, and wherein the said air tight space is in fluid communication with the vacuum source, the apparatus further including vacuum monitoring means configured to monitor the status of a vacuum created in the air tight space to a weld seam, and monitoring the status of a vacuum in the weld seam monitoring apparatus.