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Min distance "A" between reinforcing plate and vertical weld joint

thread1452-453744

Min distance "A" between reinforcing plate and vertical weld joint

Min distance "A" between reinforcing plate and vertical weld joint

(OP)

Good day

I have a distance (A)125mm between periphery of reinforcing plate and vertical weld joint of tank.
In API 650 it shown as A=150mm (Fig. 5.6).
Can we reduce distance "A" to 125mm (with RT or PWHT)?

Dia. of nozzle 6"
WTH of tank 8mm
Water Storage tank.
Reinforcing plate type RTR

Thanks

RE: Min distance "A" between reinforcing plate and vertical weld joint

The distance is measured from the toe of the fillet on the reinforcing plate, so you may have less than 125 mm.

API does not have a rule that reduces "A" below 150 mm.

RE: Min distance "A" between reinforcing plate and vertical weld joint

If the reinforcing plate is not round, you can trim the reinforcing plate to get your weld spacing, down to the Do radius in table 5-6 (column 5).

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