The coating materials shall be stored in a clean, dry area
All materials shall be delivered to the jobsite in sealed and labelled containers and
shall be stored in a location that is protected from the elements, well ventilated and freefrom excessive heat, open flame, or other sources of ignition. Coating materials subjectto freeze shall be stored in a heated area.
The materials storerooms shall be appropriately ventilated and shall comply with applicable lawprovisions on safety and fire prevention.
Tape stored at jobsites or material yards shall be kept dry and under cover and never exposedto direct sunlight. Rolls shall not be stacked more than four (4) tiers high and never directly onthe ground or on irregular surfaces. The cores of stored tape rolls shall be vertical. Rolls shallnot be thrown or dropped. Hooks or other sharp handling devices shall not be used. Tape shallnot be stored in contact with protrusions capable of puncturing the material. Rolls or equipmentshall not be piled on top of or against stored tape.
How to install pipeline tapes?
The inner-layer tape shall be applied directly onto the prepared pipe surface,
Wrap tape application consists of hand application and machine application.
The tape applied temperature must be above 5 degrees, the coating construction temperature shall be
more than -5 degrees as better.
The tape shall be spirally applied ,minimum overlap shall not be less than 50%.When applied to
spirally welded pipe , the direction of the tape spiral shall be generally parallel to the weld spiral.
The minimum overlap shall not be less than 25 mm.
4)When a new row of tape is started, the ends shall be overlapped at least 150 mm measured circumference.