How do you know when your blast hose needs replacing?
Always replace your blast hose if there is any visible exterior wear such as dry rotting, cracking, or being run over by a heavy piece of equipment. A blast hose that has been run over by heavy equipment, like a forklift, will have internal fractures to the blast lining and this will cause it to wear out prematurely and blow out in one way or another.
It is not possible to view the internal integrity of a blast hose so usually the softness off the blast hose is the giveaway for when you need a new one. If the blast hose is weakened internally it will collapse when you pick it up, it will feel squishy if you step on it and it will instantly squash all the way under your foot. It’s also soft and is capable of collapsing on itself by pinching it with two fingers.
Where along the blast hose is it important to check for its integrity?
On many jobsites you will have between 100-300ft of blast hose and it is recommended that you check every foot of the hose as you unroll it around your jobsite.
Where are the few areas that are the highest wearing and should be checked daily?
At the blast pot (especially if you are using a pinch valve which is a destroyer of blast hose).
At the entrance to the tank or structure. Here the workers are often climbing over hoses to exit the tank or structure and the hose is curved over the edge of the manway creating a wear point.
Last 25ft of the hose near the operator. You will often find that hoses that are worn will kink over the blasters shoulder while he isn’t blasting. This is creating a wear point and you must protect your blaster as it could blow out and hurt the operator and they are on the money-making end of the blast hose!