PipingNotes

Design-Engineering-Construction-Testing & Commissioning of piping

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Notes

Note#14

Painting welded joints not affected hydro-test

Notes

Note#13

For chemical anchor bolts M16–> use drill bit 18mm –> hole depth +13mm & M20–> use drill bit 24mm –> hole depth +17.5mm

Notes

Note#12

1 inch steel wire = 10 ton load (decrease 25% for safety)

Notes

Note#11

Pneumatic test pressure= 1.1 design pressure according to ASME (B31.1& B31.3)

Notes

Note#10

Hydro-test test pressure= 1.5 design pressure according to (ASME B31.1 & B31.3)

Notes

Note#9

(PQR)procedure qualifications record: suggested procedure of welding which reflected in WPS if accepted

Notes

Note#8

To calculate stud bolt size (flange thickness+ 1.5bolt dia.)2 + gasket thickness

Notes

Note#7

The gap for socket weld 1.5mm to 3mm

Notes

Note#6

Welding equipment require from 33A to 63A

Notes

Note#5

The welding for stainless steel piping require purging by inert gas

Notes

Note#4

Stainless steel pipe bundle always 6m for any size

Notes

Note#3

Raised face flanges require ring gasket or spiral wound

Notes

Note#2

Flat face flanges require full face gasket

Notes

Note#1

Usually large bore piping for sizes ≥ 2.5″, small bore piping for sizes ≤ 2″

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