compensation
DESCRIPTION
pipingTRANSCRIPT
-
`Sheet 22
Rev. 0
EQPT.
1 Compensation check for piping As per 104.3.1 (D)
S.No.01 Item
Drg. No.
Item No.
02 A = Additional Thickness mm mm
03 Tb = Actual (or) min. wall thickness of branch mm mm
04 Th = Actual (or) min. wall thickness of header mm mm
05 Dob = Outside diameter of branch pipe mm mm
06 Doh = Outside diameter of header pipe mm mm07
mm mm
08 tmh = Required min. wall thickness of header mm mm
09 tmb = Required min. wall thickness of branch mm mm
10 d2 = Half width of reinforcing Zone
= The greater of d1 ( or ) (Tb-A)+(Th-A)+(d1/2),
but in no case more than Doh.
11 d1 mm mm
12 (Tb-A) + (Th-A) + (d1/2) mm mm
12 d2 mm mm
d2 < Doh13 Fillet / weld leg mm mm
14 A7 = Required reinforcement area (tmh-A) d1 mm2 mm2
15 mm2 mm2
16 A2 = Area provided by excess pipe wall in
the branch for a distance L4 above the run
= 2L4 (Tb - tmb)
L4 =Altitude of reinforcement zone outside of run
=2.5(Tb-A)+tr or 2.5(Th-A)whichever is smaller
17 2.5 (Tb-A) + tr mm2 mm2
18 2.5 (Th-A) mm2 mm2
19 L4 mm2 mm2
20 A2 = mm2 mm2
21 A3 = Area provided by deposited weld mm2 mm2
22 Provided area A1+ A2+ A3 mm2 mm2
23 Required area < Provided area
STRESS CALCULATIONMFR'S
SERIAL NO. GBE/1842/035STEAM OUTLET PIPING
DESCRIPTION
39.70
2.82
114.30
31.75
Half Coupling
10-20-05-3023
09
d1 = Inside centerline long. dimension of finished branch opening in run of the pipe[ Dob - 2 ( Tb - A )]
USER UNIT
5.27
DATA
63.50
SI UNIT0.00
15.88
1.38
0.00
89.54
103.64
31.75
37.03
37.03
Hence reinforcement is not required
382.08
0.00
485.71
Hence not satisfactory
A1 = Area provided by excess pipe wall in the run = ( 2 d2 - d1 ) (Th - tmh )
13.18
13.18