1. Vertical spot radiograph in accordance with API 650 one in the first 3 m (10 ft) and one in each 30 m (100 ft) thereafter, 25% of which shall be at intersections.
2. Horizontal spot radiograph in accordance with API 650 one in the first 3 m (10 ft) and one in each 60 m (200 ft) thereafter.
3. Vertical spot radiograph in each vertical seam in the lowest course. Spot radiographs that satisfy the requirements of Note 1 for the lowest course may be used to satisfy this requirement.
1. Vertical spot radiograph in accordance with API 650 one in the first 3 m (10 ft) and one in each 30 m (100 ft) thereafter, 25% of which shall be at intersections.
2. Horizontal spot radiograph in accordance with API 650 one in the first 3 m (10 ft) and one in each 60 m (200 ft) thereafter.
3. Vertical spot radiograph in each vertical seam in the lowest course. Spot radiographs that satisfy the requirements of Note 1 for the lowest course may be used to satisfy this requirement.
4. Spot radiographs of all intersections over 10 mm (3/8 in.)
5. Spot radiograph of bottom of each vertical seam in lowest shell course over 10 mm (3/8 in.)
1. Vertical spot radiograph in accordance with API 650 one in the first 3 m (10 ft) and one in each 30 m (100 ft) thereafter, 25% of which shall be at intersections.
2. Horizontal spot radiograph in accordance with API 650 one in the first 3 m (10 ft) and one in each 60 m (200 ft) thereafter.
3. Vertical spot radiograph in each vertical seam in the lowest course. Spot radiographs that satisfy the requirements of Note 1 for the lowest course may be used to satisfy this requirement.
4. Spot radiographs of all intersections over 10 mm (3/8 in.)
5. Spot radiograph of bottom of each vertical seam in lowest shell course over 10 mm (3/8 in.)
6. Complete radiograph of each vertical seam over 25 mm (1 in.). The complete radiograph may include the Spot radiographs of the intersections if the film has a minimum width of 100 mm (4 in.)
