Browsing:

Category: Notes

Note#29

Types of expansion joints (slip, ball, metal bellows & rubber bellows)


Note#28

Types of strainers (conical start up, WYE, basket)


Note#27

Types of steam traps (float, thermostatic, thermodynamic, inverted bucket)


Note#26

Steam trap used to discharge condensate from steam piping


Note#25

FCC the most tight structure


Note#24

FCC more ductile than BCC


Note#23

Crystal structures in metal alloys (FCC, BCC & HCP)


Note#22

Piping material selection according to (flow medium, operating condition, life time, fabrication & most economical)


Note#21

Insulating flange kits include gasket, sleeve & washer are provided to prevent galvanic corrosion between dissimilar metals check detail


Note#20

Stainless steel pipe to be isolated from steel supports by red rubber tape or stainless steel shims


Note#19

Allowable stresses. B31.1 allowable are lower than B31.3 because b31.3 plants generally have a plant life of about 20 to 30 years. B31.1 on the other is about 40 years, B31.1 is MORE conservative than B31.3


Note#18

Put temporary gasket @ terminal points only


Note#17

Always separate stainless steel piping & carbon steel piping in the storing


Note#16

Pipe thickness more than 8mm welded 2 pass GTAW (root + hot) then SMAW


Note#15

Pipe thickness less or equal 8mm welded full GTAW


Note#14

Painting welded joints not affected hydro-test


Note#13

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


Note#12

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


Note#11

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


Note#10

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