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Calculating Shell Tolerances for External Pressure &Template lengthAs per Part 4.4.4.1 (b) of ASE Sec.!""" #i$. %

"nlet Separator (!1''1 1''%)

t 80 mm(Nominal thk minus corrosionallowance)

R125

3 mm (Inside Surface)

L!

! mm("nsu##orted shelllen$th)

% &IN(0'38(Rt)0'0*** + 0'*85)0'*2,3!

*

%min(2'28(Rt)0'5*+2'8) 2'8

n %-.(s/rt(Rt).(RL)) 2'**2*alid for 2%n%(1'*1.s/rt(Rt))

1'*1.s/rt(Rt) %5'5801

,,

ence4

Lec % 2.R.sin(#i2.n)1*,1'*1

*

ec % 0'015.t.((Lecs/rt(R.t))3'25)1'0, %

12'12512

alid for 0'2.t % ec %(0'02*2.R)

0'2.t % 1

0'02*2.R%

30'322

e % min (ec +2.t) %

12'12512

o*e$er as +ec+ is $ali, for-'.%/t 10 mm ax. permissible ,e$iation from a true circle

+e+ is 10 mm. Chor, ength of Template +ec+ shall notexcee, 1421 mm.

emi ea, Tolerances for External Pressure &Template length As per Part 4.3.%.% (a) & 4.4.4.1 (b) of ASE Sec.

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!""" #i$. %Inside 6iameter 6 250 mmead InsideRadius R 1258 mm

ead &in7hickness t *0 mmead &eanRadius Rm 12!8 mm

$erTolerance 1.%56 of # 31.3

mm (utside to s#ecied sha#e)

7n,erTolerance '.0%56 of # 15.8

mm (Inside to s#ecied sha#e)

Chor, ength of Template +e+ 3.8% xS9:T (:m x t) ;41 mm