This is an archived copy - Shell Technical Standards Team
COMPLETE REVISION
April 1999
PIP INEG1000
Insulation Design and Type Codes
INEG1015
Thickness of Expanded Perlite Insulation - Combined Table
ASTM C610
Economic Thickness Required
to Limit Maximum Surface Temperature to 140° F
Nominal
Pipe
Size,
Inches
Operating Temperature, ° F
>140
151
to
200
201
to
250
251
to
300
301
to
350
351
to
400
401
to
450
451
to
500
501
to
550
551
to
600
601
to
650
651
to
700
701
to
750
751
to
800
801
to
850
851
to
900
901
to
950
951
to
1000
1001
to
1050
1051
to
1100
1101
to
1150
1151
to
1200
½
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
2.0
2.0
2.5
2.5
2.5
2.5
3.0
3.0
3.5
3.5
4.0
4.5
4.5
¾
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
2.0
2.0
2.5
2.5
2.5
2.5
3.0
3.0
3.5
3.5
4.0
4.0
4.5
5.0
1
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
2.0
2.0
2.5
2.5
2.5
3.0
3.0
3.5
4.0
4.0
4.5
4.5
5.0
5.0
1-1/2
1.5
1.5
1.5
1.5
1.5
1.5
1.5
2.0
2.0
2.0
2.5
2.5
3.0
3.0
3.5
4.0
4.0
4.5
5.0
5.0
6.0
6.0
2
1.5
1.5
1.5
1.5
1.5
1.5
1.5
2.0
2.0
2.5
2.5
3.0
3.0
3.5
4.0
4.0
4.5
4.5
5.0
5.5
6.0
6.5
3
1.5
1.5
1.5
1.5
1.5
1.5
2.0
2.0
2.5
2.5
3.0
3.5
3.5
4.0
4.0
4.5
5.0
5.0
5.5
6.0
7.0
7.5
4
1.5
1.5
1.5
1.5
1.5
1.5
2.0
2.5
2.5
3.0
3.0
3.5
4.0
4.0
4.5
5.0
5.0
5.5
6.0
6.5
7.5
8.0
6
1.5
1.5
1.5
1.5
1.5
2.0
2.0
2.5
3.0
3.0
3.5
4.0
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.0
8.0
8.5
8
1.5
1.5
1.5
1.5
1.5
2.0
2.5
2.5
3.0
3.5
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.0
7.5
8.5
9.0
10
1.5
1.5
1.5
1.5
1.5
2.0
2.5
2.5
3.0
3.5
4.0
4.5
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
9.0
9.5
12
1.5
1.5
1.5
1.5
1.5
2.0
2.5
3.0
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.5
10.0
14
1.5
1.5
1.5
1.5
2.0
2.0
2.5
3.0
3.5
4.0
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.5
10.0
16
1.5
1.5
1.5
2.0
2.0
2.5
2.5
3.0
3.5
4.0
4.5
5.0
5.5
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.5
10.5
18
1.5
1.5
1.5
2.0
2.0
2.5
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
10.0
10.5
20
1.5
1.5
2.0
2.0
2.0
2.5
3.0
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
10.0
10.5
24
1.5
1.5
2.0
2.0
2.0
2.5
3.0
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.5
10.5
11.0
30
1.5
1.5
2.0
2.0
2.0
2.5
3.0
3.5
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.5
8.0
8.5
9.0
9.5
11.0
11.5
36
1.5
1.5
2.0
2.0
2.0
2.5
3.0
3.5
4.0
4.0
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.5
10.0
11.0
12.0
Flat
1.5
1.5
2.0
2.0
2.0
2.5
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
7.0
7.5
8.0
9.0
9.5
10.5
11.5
12.0
Process Industry Practices
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