EG3202 Pipe Thickness Retirement Guide

ENGINEERING GUIDELINE Title: PIPE THICKNESS RETIREMENT GUIDE Approvals:

Guideline No Page Issue Date

: : :

3202 1 of 20 June, 2000

Sponsor

Director, Specialty Engineering

C. Babcock

M. R. Hoffman

Signature

ON FILE

ON FILE

Date

11/17/00

01/14/01

Name

TABLE OF CONTENTS Page 1.0

PURPOSE ............................................................................................................................. 2

2.0

SCOPE................................................................................................................................... 2

3.0

CODES, STANDARDS AND REFERENCES................................................................... 3

4.0

TABLE USAGE.................................................................................................................... 3

5.0

RETIREMENT THICKNESS CALCULATION.............................................................. 4

5.1

Design Assumptions............................................................................................................... 4

5.2

Calculations .......................................................................................................................... 54

PIPE THICKNESS RETIREMENT TABLES ..................................................................................... 8 RECORD OF REVISIONS................................................................................................................... 20

Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE

1.0

Issue Date: June, 2000

Page 2 of 20

PURPOSE The purpose of this guideline is to provide a methodology and simplified tables to establish retirement thicknesses for pipes designed in accordance with ASME B31.3. This guideline should be used to conduct condition assessment of piping per EG 6002, Model Plant Procedure for condition Assessment.

2.0

SCOPE

2.1

The rules of this guideline apply only to uniform corrosion and not to scattered pitting or localized thinning. For localized thinning, API 570, ASME B31G or appropriate Mechanical Integrity Risk Assessment document should be used.

2.2

Tables included in this guideline are for easy reference and are intended as screening tools to establish a first-cut retirement thickness. The retirement thicknesses provided in the tables are only for the following conditions. For conditions other than the one specified below, use the equations presented in this guideline to calculate the retirement thickness.

2.2.1

Carbon steel (A53 Gr B, A106 Gr B), 1-1/4 Cr-1/2 Mo (A335 P11) and Type 304L stainless pipe materials.

2.2.2

Maximum design temperature of 800° F.

2.2.3

Maximum design pressure of 1000 psi.

2.2.4

Pipe diameter between 1-1/2 and 36 in. inclusive.

2.2.5

Joint efficiency of 1.0 for seamless or 100% radiographed pipes and 0.85 for welded pipes.

2.2.6

Maximum span of 40 ft.

2.2.7

Liquid specific gravity of 1.0.

2.3

The retirement thicknesses contained in these tables might be excessively conservative for some systems. This depends on how close the actual system design parameters are to the parameters used in the tables. Therefore a more detailed retirement thickness evaluation might be warranted before a final decision is made, if the tables indicate that pipe should be retired. The retirement thickness for the actual design conditions may be calculated using the equations presented in this document or using a computer program available with Specialty Engineering.

2.4

It is assumed that the entire line section under consideration has been inspected per API 570. If the pipe is to be retained in service, the decision is based upon the area with the greatest metal loss.

2.5

These tables should not be used for pipe subject to vacuum, or for piping designed to meet the requirements of other codes or standards.

2.6

All measurements are expressed in the U.S. Conventional System of Measurement, followed by, in parenthesis, the equivalent SI units (metric). All SI units are for reference only and shall not be interpreted as a precise conversion.


3.0


Page 3 of 20

CODES, STANDARDS AND REFERENCES The latest editions of the following codes and standards in effect on the date of contract award shall be used, except as otherwise specified.

3.1

Lyondell Engineering Standards and Guidelines ES 205 EG 6002

3.2

American Society of Mechanical Engineers (ASME) ASME B31.3 ASME B31G

3.3

Thermal Insulation Model Plant Procedure for Condition Assessments

Chemical Plant and Petroleum Refinery Piping, 1990 Edition through 1991 Addenda Manual for Determining the Remaining Strength of Corroded Pipelines

American Petroleum Standards (API) API 570

Piping Inspection Code

3.4

Victor, Helguero M., Piping Stress Handbook, Second Edition 1986.

4.0

TABLE USAGE The following guidelines are provided for use of the tables.

4.1.1

Based on the design temperature, identify the applicable table for the given pipe size. Two tables are given for each pipe size. One for design temperature 600°F and under, and the second for design temperature between 601°F and 800°F.

4.1.2

Based on the material, joint efficiency factor, and the span, identify the applicable row in the Table.

4.1.3

Based on the design pressure identify the applicable column and read the retirement thickness. The next higher value of design pressure should be used for design pressures between the values specified.

4.1.4

An estimate should be made of the maximum span between pipe support points. Tables are provided for up to 20 ft (6 m) spans for pipe diameters under 6 in., and for both 20 ft (6 m) and 40 ft (12 m) spans for larger diameters. The table for the next higher support span from the actual value should be used for the evaluation.

4.1.5

Corrosion allowances are not included in the tables. If the piping is subject to corrosion, a corrosion allowance must be added to the values contained in these tables. The corrosion allowance should be sufficient to allow the pipe to remain in service and not corrode below the tabulated thickness during the following interval of plant operation.

5.0

RETIREMENT THICKNESS CALCULATION


5.1


Page 4 of 20

Design Assumptions The following assumptions apply to the calculations made to develop the retirement thicknesses contained in these tables.

5.1.1

Calculations were made for both the circumferential pipe stress due to internal pressure, and the longitudinal pipe stress due to both internal pressure and uniform weight load. The larger thickness resulting from these two calculations is used in the tables.

5.1.2

The liquid specific gravity was assumed equal to 1.0.

5.1.3

The pipe is assumed to be insulated. Insulation was assumed to be calcium silicate having a density of 11 lb/ft3. Insulation thickness used for each pipe size is given in the Table.

5.1.4

There are no large, local weight loads (e.g., valves, flanges, etc.) included in the calculations. It is assumed that where these items are installed, they are located relatively close to support points.

5.1.5

Retirement thickness considerations at fabricated branch intersection points (i.e., unreinforced or pad reinforced welded pipe intersections) are not included within these tables. The stated retirement thicknesses apply to locations that are at least one branch pipe diameter away from the branch pipe centerline where it intersects the header pipe. Corrosion located closer to the branch pipe intersection should be evaluated using ASME B31.3 branch reinforcement criteria.

5.1.6

The pipe wall thicknesses must be at least equal to the following minimum values, based on nominal pipe diameter, D. This is to provide basic strength to resist mechanical damage due to imposed external loads not explicitly designed for. D, in. 1-1/2 to 2-1/2 3-4 6 - 12 14 - 16 20 24 - 36

t min , in. 0.08 0.095 0.10 0.16 0.18 0.20

5.1.7

The pipe is assumed to be seamless (or have a weld joint efficiency of 1.0) for 6 in. and under for carbon steel pipes, and 2 in. and under for stainless steel pipes. Both seamless and welded pipes (joint efficiency of 0.85) are evaluated for rest of the pipe sizes.

5.1.8

Pipe deflection was not used as a limiting criterion, because excessive deflection would not constitute pipe failure. Thermal flexibility stresses were also not considered because these are a strong function of specific piping system layout and design details. Localized corrosion at stress intensification points (e.g., elbows, branch connections) should be evaluated on an individual basis for its impact on local thermal stresses and the probability of fatigue failure.

5.2

Calculations

5.2.1

The retirement thickness tables are based on the circumferential stress in the pipe due to internal pressure, and the longitudinal stress in the pipe due to both internal pressure and dead weight loading. An iterative procedure was used to determine which condition governed pipe retirement



Page 5 of 20

in each case. The stress in the pipe was limited to the hot allowable stress of the pipe material in accordance with ASME B31.3. 5.2.2

The following equations were used: Circumferential Stress, Sc t =

PD 2E(Sc + 0.4P)

Longitudinal Stress, SL SL = 5 WL2 + PD - 0.2P 4Z 4t Where: S c = SL =

S t ti P D E L Z W Wp WL WI

= = = = = = = = = = = = =

hot allowable stress per ASME B31.3 allowable pipe wall thickness, in. insulation thickness, in. internal pressure, psig pipe outside diameter, in. longitudinal weld joint efficiency straight span between pipe supports, ft pipe section modules, in3 uniform weight load, lb/ft W p + WL + WI pipe weight liquid contents weight insulation weight

Using the circumferential stress equation, the determination of allowable thickness is simple and straightforward. The pipe thickness, t, is a direct function of the other parameters. The longitudinal stress equation is more complicated to solve for allowable thickness because several terms are functions of thickness. The following summarizes the further development of the longitudinal stress equation as it was ultimately used in the calculations. Z

=

π D2t = 0.785 D2t 4

WP

=

10.68 Dt

WL

=

0.34 (D-2t)2

WI

=

0.24 (ti2 - Dti)

SL

=

1.25 WL2 0.785D2t

+ PD 4t


SL


Page 6 of 20

1.592 WL2 + PD D2t 4t

=

A computer program was used to iteratively solve the longitudinal stress equation for “t” based on input values of P, D, L, WI and S. The program also solved for the required “t” based on the simpler circumferential stress equation. The larger of the two calculated values and the values specified in paragraph 5.1.6 was used in the retirement Tables. 5.2.3

Of necessity, the pipe retirement tables specify particular pipe materials, design conditions, pipe diameters and support spans to permit generalization. The Tables could be conservative for some piping systems. For example, if a 20 in. diameter pipe has a 25 ft (8 m) support span, the 40 ft (12 m) retirement table would have to be used. If this indicates the pipe is too thin and must be replaced, it would be worthwhile to use the equations directly for the 25 ft span and calculate a more accurate retirement thickness. Of course if internal pressure rather than support span governed the thickness, the 40 ft (12 m) vs. 25 ft (8 m) span is irrelevant. Other situations where specific calculations may be worthwhile are for vapor services, or situations with significantly different insulation details that were governed by the longitudinal stress equation.

5.2.4

The following example summarizes the use of these equations to solve for retirement thickness (without going through all the iterations). Example Calculate retirement thickness for both liquid and gas service, 20 in. diameter, seamless, A53/B pipe under the following conditions: P = 200 psig

T = 700°F

Span = 40 ft

Insulation Thickness = 4 in. Specific Gravity = 1.0 S

=

16500 psi

(from ASME B31.3)

•

Circumferential Stress t

=

PD 2E(S + 0.4P)

t

=

0.121 in.

= -

200 x 20 2 x 1(16500 + 0.4 x 200)

Retirement thickness based only on circumferential stress.

Longitudinal Stress In order to avoid the iterations needed, just assume the thickness is 0.131 in. In a real case, start with the thickness calculated for circumferential stress, and increase it as required until the longitudinal stress equation is satisfied. WP = 10.68 Dt = 10.68 x 20 x 0.131 WP = 28 lb/ft WL = 0.34(D-2t)2 = 0.34(20 - 2 x 0.131)2 WL = 132.5 lb/ft


Wi Wi


Page 7 of 20

= 0.24 (ti2 - Dti) = 0.24 (42 - 20x4) = 23.04 lb/ft

W = WP + WL + WI = 28 + 132.5 + 23.04 W = 183.5 lb/ft SL

WL2 D2t

=

1.592

+

=

1.592 x 183.5 x 402 + 202 x 0.131

=

16553 psi

PD 4t 200 x 20 4 x 0.131

Therefore the retirement thickness must be 0.131 in. for liquid filled pipe. If the pipe is in gas service, then WL = 0 W = 28 + 23.04 W = 51 lb/ft Use t = 0.121 as an initial assumption for the longitudinal stress calculation, because the retirement thickness can’t be less than that needed for the circumferential stress. SL

=

1.592 x 51 x 402 + 202 x 0.121

SL

=

10948 psi

200 x 20 4 x 0.121

Because this is still less than the allowable stress, the longitudinal stress calculation does not govern. The retirement thickness is 0.121 in. 5.2.5

A computer program is available with Specialty Engineering, which calculates the pipe retirement thickness using the guidelines specified in this document. A copy of the program may be obtained from the Sponsor.



Page 8 of 20

PIPE THICKNESS RETIREMENT TABLES

PIPE NOMINAL DIAMETER : 1.5 in.

MATERIAL A53GrB A335GrP11 A312Gr304L A312Gr316L Monel-400


JE 1 1 1 1 1

JE 1 1 1 1 1

SPAN 20 20 20 20 20

Design Temperature: 600°F and under (Insulation = 1.5 in.) Design Pressure, psig 100 200 300 400 500 600 700 800 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080

900 0.080 0.080 0.080 0.082 0.080

1000 0.080 0.080 0.082 0.085 0.080

SPAN 20 20 20 20 20

Design Temperature : 601 to 800°F (Insulation = 2.5 in.) Design Pressure, psig 100 200 300 400 500 600 700 800 0.080 0.081 0.088 0.094 0.099 0.106 0.111 0.117 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.083 0.087 0.092 0.080 0.080 0.080 0.080 0.083 0.088 0.092 0.098 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.082

900 0.123 0.082 0.097 0.103 0.087

1000 0.129 0.086 0.101 0.107 0.090

SPAN 20 20 20 20 20

Design Temperature:600°F and under (Insulation = 1.5 in.) Design Pressure, psig 100 200 300 400 500 600 700 800 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080

900 0.080 0.080 0.080 0.081 0.080

1000 0.080 0.080 0.083 0.086 0.080

SPAN 20 20 20 20 20

Design Temperature: 601 - 800°F (Insulation = 2.5 in.) Design Pressure, psig 100 200 300 400 500 600 700 0.080 0.080 0.086 0.093 0.100 0.107 0.114 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.085 0.091 0.080 0.080 0.080 0.080 0.084 0.089 0.096 0.080 0.080 0.080 0.080 0.080 0.080 0.081

900 0.128 0.086 0.101 0.108 0.091

1000 0.135 0.091 0.107 0.114 0.096

PIPE NOMINAL DIAMETER :2 in. MATERIAL A53GrB A335GrP11 A312Gr304L A312Gr316L Monel-400


JE 1 1 1 1 1

JE 1 1 1 1 1

800 0.120 0.082 0.096 0.102 0.086



Page 9 of 20

PIPE NOMINAL DIAMETER : 2.5 in.



JE 1 1 1 1 1

JE 1 1 1 1 1

SPAN 20 20 20 20 20

Design Temperature: 600°F and under (Insulation Design Pressure, psig 100 200 300 400 500 600 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080

SPAN 20 20 20 20 20

Design Temperature: 601 - 800°F (Insulation = 2.5 in.) Design Pressure, psig 100 200 300 400 500 600 700 0.080 0.080 0.080 0.085 0.093 0.101 0.110 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.080 0.081 0.088 0.080 0.080 0.080 0.080 0.080 0.085 0.092 0.080 0.080 0.080 0.080 0.080 0.080 0.080

= 2 in.) 700 0.080 0.080 0.080 0.080 0.080

800 0.080 0.080 0.080 0.083 0.080

900 0.080 0.080 0.090 0.093 0.085

1000 0.081 0.084 0.100 0.103 0.095

800 0.117 0.081 0.094 0.099 0.085

900 0.126 0.086 0.101 0.106 0.091

1000 0.133 0.095 0.107 0.113 0.098

800 0.095 0.095 0.098 0.115 0.101 0.095

900 0.095 0.095 0.110 0.129 0.114 0.104

1000 0.099 0.102 0.122 0.143 0.126 0.115

800 0.126 0.095 0.105 0.124 0.110 0.096

900 0.141 0.104 0.118 0.139 0.123 0.108

1000 0.156 0.115 0.131 0.154 0.137 0.120

PIPE NOMINAL DIAMETER : 3 in.

MATERIAL A53GrB A335GrP11 A312Gr304L A312Gr304L A312Gr316L Monel-400

MATERIAL A53GrB A335GrP11 A312Gr304L A312Gr304L A312Gr316L Monel-400

JE 1 1 1 0.85 1 1

JE 1 1 1 0.85 1 1

SPAN 20 20 20 20 20 20

Design Temperature: 600°F and under (Insulation Design Pressure, psig 100 200 300 400 500 600 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095

SPAN 20 20 20 20 20 20

Design Temperature: 601 - 800°F (Insulation = 2.5 in.) Design Pressure, psig 100 200 300 400 500 600 700 0.095 0.095 0.095 0.095 0.095 0.101 0.111 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.109 0.095 0.095 0.095 0.095 0.095 0.095 0.097 0.095 0.095 0.095 0.095 0.095 0.095 0.095

= 2 in.) 700 0.095 0.095 0.095 0.101 0.095 0.095



Page 10 of 20


MATERIAL A53GrB A335GrP11 A312Gr304L A312Gr304L A312Gr316L A312Gr316L Monel-400 Monel-400


JE 1 1 1 0.85 1 0.85 1 0.85

JE 1 1 1 0.85 1 0.85 1 0.85

SPAN 20 20 20 20 20 20 20 20

Design Temperature: 600°F and under (Insulation Design Pressure, psig 100 200 300 400 500 600 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.112 0.095 0.095 0.095 0.095 0.095 0.098 0.095 0.095 0.095 0.095 0.097 0.116 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.106

SPAN 20 20 20 20 20 20 20 20

Design Temperature: 601 - 800°F (Insulation = 2.5 in.) Design Pressure, psig 100 200 300 400 500 600 700 0.095 0.095 0.095 0.095 0.102 0.122 0.142 0.095 0.095 0.095 0.095 0.095 0.095 0.104 0.095 0.095 0.095 0.095 0.095 0.102 0.119 0.095 0.095 0.095 0.095 0.100 0.120 0.140 0.095 0.095 0.095 0.095 0.095 0.107 0.124 0.095 0.095 0.095 0.095 0.105 0.126 0.146 0.095 0.095 0.095 0.095 0.095 0.095 0.109 0.095 0.095 0.095 0.095 0.095 0.110 0.128

= 2 in.) 700 0.095 0.095 0.110 0.130 0.114 0.134 0.104 0.123

800 0.102 0.106 0.126 0.148 0.130 0.153 0.119 0.140

900 0.115 0.119 0.141 0.166 0.146 0.172 0.134 0.157

1000 0.127 0.132 0.156 0.184 0.162 0.190 0.148 0.174

800 0.162 0.119 0.135 0.159 0.142 0.166 0.124 0.146

900 0.181 0.134 0.152 0.178 0.159 0.187 0.139 0.164

1000 0.201 0.148 0.168 0.198 0.176 0.207 0.154 0.181

900 0.169 0.175 0.208 0.244 0.215 0.253 0.220 0.259

1000 0.187 0.194 0.230 0.271 0.238 0.280 0.244 0.287



JE 1 1 1 0.85 1 0.85 1 0.85

SPAN 20 20 20 20 20 20 20 20


= 2 in.) 700 0.132 0.137 0.162 0.191 0.168 0.198 0.172 0.202

800 0.150 0.156 0.185 0.218 0.192 0.226 0.196 0.231



JE 1 1 1 0.85 1 0.85 1 0.85

SPAN 20 20 20 20 20 20 20 20


Design Temperature: 601 - 800°F (Insulation = 3 in.) Design Pressure, psig 100 200 300 400 500 600 700 0.100 0.100 0.100 0.121 0.151 0.180 0.209 0.100 0.100 0.100 0.100 0.110 0.132 0.154 0.100 0.100 0.100 0.101 0.125 0.150 0.175 0.100 0.100 0.100 0.118 0.148 0.177 0.205 0.100 0.100 0.100 0.105 0.131 0.157 0.183 0.100 0.100 0.100 0.124 0.155 0.185 0.215 0.100 0.100 0.100 0.103 0.128 0.154 0.179 0.100 0.100 0.100 0.121 0.151 0.181 0.210

800 0.238 0.175 0.199 0.234 0.208 0.245 0.204 0.239

Page 11 of 20

900 0.267 0.197 0.223 0.263 0.234 0.275 0.228 0.269

1000 0.296 0.218 0.247 0.291 0.259 0.304 0.253 0.297

800 0.196 0.196 0.230 0.230 0.203 0.203 0.238 0.238 0.241 0.244 0.283 0.283 0.250 0.255 0.294 0.294 0.255 0.262 0.300 0.300

900 0.220 0.220 0.259 0.259 0.228 0.228 0.268 0.268 0.270 0.270 0.318 0.318 0.280 0.280 0.329 0.329 0.286 0.286 0.337 0.337

1000 0.244 0.244 0.287 0.287 0.252 0.252 0.297 0.297 0.299 0.299 0.352 0.352 0.310 0.310 0.365 0.365 0.317 0.317 0.373 0.373

Design Temperature: 601 - 800°F (Insulation = 3 in.) Design Pressure, psig 100 200 300 400 500 600 700 800 0.100 0.100 0.118 0.157 0.196 0.234 0.272 0.310 0.169 0.195 0.221 0.247 0.274 0.300 0.326 0.352 0.100 0.100 0.139 0.185 0.231 0.276 0.321 0.365 0.169 0.195 0.221 0.247 0.274 0.300 0.326 0.365 0.100 0.100 0.100 0.115 0.144 0.172 0.200 0.228 0.113 0.131 0.149 0.166 0.184 0.201 0.219 0.237 0.100 0.100 0.102 0.136 0.169 0.202 0.236 0.268 0.113 0.130 0.148 0.166 0.184 0.202 0.236 0.268 0.100 0.100 0.100 0.131 0.163 0.195 0.227 0.259

900 0.348 0.378 0.409 0.409 0.256 0.256 0.301 0.301 0.291

1000 0.385 0.404 0.453 0.453 0.284 0.284 0.334 0.334 0.322


MATERIAL A53GrB A53GrB A53GrB A53GrB A335GrP11 A335GrP11 A335GrP11 A335GrP11 A312Gr304L A312Gr304L A312Gr304L A312Gr304L A312Gr316L A312Gr316L A312Gr316L A312Gr316L Monel-400 Monel-400 Monel-400 Monel-400

MATERIAL A53GrB A53GrB A53GrB A53GrB A335GrP11 A335GrP11 335GrP11 A335GrP11 A312Gr304L

JE 1 1 0.85 0.85 1 1 0.85 0.85 1 1 0.85 0.85 1 1 0.85 0.85 1 1 0.85 0.85

JE 1 1 0.85 0.85 1 1 0.85 0.85 1

SPAN 20 40 20 40 20 40 20 40 20 40 20 40 20 40 20 40 20 40 20 40

SPAN 20 40 20 40 20 40 20 40 20

Design Temperature: 600°F and under (Insulation Design Pressure, psig 100 200 300 400 500 600 0.100 0.100 0.100 0.100 0.123 0.148 0.100 0.101 0.115 0.130 0.144 0.160 0.100 0.100 0.100 0.116 0.145 0.174 0.100 0.100 0.115 0.130 0.145 0.174 0.100 0.100 0.100 0.102 0.128 0.153 0.100 0.104 0.120 0.135 0.151 0.167 0.100 0.100 0.100 0.120 0.150 0.180 0.100 0.104 0.120 0.135 0.151 0.180 0.100 0.100 0.100 0.122 0.152 0.182 0.111 0.130 0.149 0.168 0.187 0.206 0.100 0.100 0.108 0.143 0.179 0.214 0.111 0.130 0.149 0.168 0.187 0.214 0.100 0.100 0.100 0.126 0.157 0.188 0.116 0.136 0.156 0.175 0.195 0.215 0.100 0.100 0.112 0.149 0.185 0.222 0.116 0.136 0.156 0.176 0.195 0.222 0.100 0.100 0.100 0.129 0.161 0.193 0.120 0.140 0.160 0.181 0.201 0.222 0.100 0.100 0.114 0.152 0.189 0.226 0.119 0.139 0.160 0.181 0.201 0.226

= 2 in.) 700 0.172 0.174 0.202 0.202 0.178 0.182 0.209 0.209 0.211 0.224 0.249 0.249 0.219 0.235 0.258 0.258 0.224 0.242 0.263 0.263


A312Gr304L A312Gr304L A312Gr304L A312Gr316L A312Gr316L A312Gr316L A312Gr316L Monel-400 Monel-400 Monel-400 Monel-400

1 0.85 0.85 1 1 0.85 0.85 1 1 0.85 0.85

40 20 40 20 40 20 40 20 40 20 40

0.132 0.100 0.133 0.100 0.141 0.100 0.141 0.100 0.137 0.100 0.137

0.153 0.100 0.154 0.100 0.163 0.100 0.163 0.100 0.157 0.100 0.158

0.175 0.116 0.174 0.103 0.185 0.122 0.185 0.101 0.179 0.119 0.180

0.195 0.154 0.195 0.137 0.207 0.162 0.207 0.134 0.201 0.158 0.201


0.215 0.192 0.216 0.171 0.229 0.201 0.229 0.167 0.222 0.197 0.223

0.236 0.230 0.237 0.205 0.251 0.241 0.251 0.200 0.244 0.235 0.243

0.257 0.267 0.267 0.238 0.273 0.280 0.280 0.233 0.265 0.274 0.274

0.278 0.305 0.305 0.271 0.295 0.319 0.319 0.265 0.286 0.312 0.312

Page 12 of 20

0.299 0.342 0.342 0.304 0.317 0.358 0.358 0.297 0.307 0.350 0.350

0.322 0.379 0.379 0.337 0.339 0.396 0.396 0.329 0.329 0.387 0.387


MATERIAL A53GrB A53GrB A53GrB A53GrB A335GrP11 A335GrP11 A335GrP11 A335GrP11 A312Gr304L A312Gr304L A312Gr304L A312Gr304L A312Gr316L A312Gr316L A312Gr316L A312Gr316L Monel-400 Monel-400 Monel-400 Monel-400

MATERIAL A53GrB A53GrB A53GrB A53GrB A335GrP11 A335GrP11 A335GrP11 A335GrP11 A312Gr304L

JE 1 1 0.85 0.85 1 1 0.85 0.85 1 1 0.85 0.85 1 1 0.85 0.85 1 1 0.85 0.85

JE 1 1 0.85 0.85 1 1 0.85 0.85 1

SPAN 20 40 20 40 20 40 20 40 20 40 20 40 20 40 20 40 20 40 20 40

Design Temperature: 600°F and under (Insulation Design Pressure, psig 100 200 300 400 500 600 0.100 0.100 0.100 0.123 0.154 0.184 0.100 0.101 0.120 0.137 0.155 0.184 0.100 0.100 0.109 0.145 0.181 0.216 0.100 0.102 0.119 0.145 0.181 0.216 0.100 0.100 0.100 0.128 0.159 0.190 0.100 0.105 0.124 0.143 0.161 0.190 0.100 0.100 0.113 0.150 0.187 0.224 0.100 0.105 0.124 0.150 0.187 0.224 0.100 0.100 0.114 0.152 0.189 0.226 0.107 0.129 0.152 0.175 0.197 0.226 0.100 0.100 0.134 0.179 0.223 0.266 0.107 0.130 0.152 0.179 0.223 0.266 0.100 0.100 0.118 0.157 0.196 0.235 0.112 0.135 0.159 0.182 0.206 0.235 0.100 0.100 0.139 0.185 0.231 0.276 0.112 0.135 0.159 0.185 0.231 0.276 0.100 0.100 0.121 0.161 0.201 0.240 0.115 0.139 0.163 0.188 0.212 0.240 0.100 0.100 0.142 0.189 0.236 0.282 0.115 0.139 0.163 0.189 0.236 0.282

700 0.214 0.214 0.252 0.252 0.222 0.222 0.261 0.261 0.263 0.263 0.310 0.310 0.273 0.273 0.321 0.321 0.279 0.279 0.328 0.328

800 0.244 0.244 0.287 0.287 0.253 0.253 0.297 0.297 0.300 0.300 0.353 0.353 0.311 0.311 0.366 0.366 0.318 0.318 0.374 0.374

900 0.274 0.274 0.322 0.322 0.284 0.284 0.334 0.334 0.337 0.337 0.396 0.396 0.349 0.349 0.411 0.411 0.357 0.357 0.420 0.420

1000 0.304 0.304 0.357 0.357 0.314 0.314 0.370 0.370 0.373 0.373 0.439 0.439 0.387 0.387 0.455 0.455 0.395 0.395 0.465 0.465

SPAN 20 40 20 40 20 40 20 40 20

Design Temperature: 601 - 800°F (Insulation = 3 in.) Design Pressure, psig 100 200 300 400 500 600 700 0.100 0.100 0.148 0.196 0.244 0.292 0.340 0.157 0.188 0.219 0.249 0.280 0.311 0.342 0.100 0.116 0.174 0.231 0.287 0.344 0.400 0.156 0.187 0.219 0.250 0.287 0.344 0.400 0.100 0.100 0.108 0.144 0.179 0.214 0.250 0.107 0.128 0.149 0.171 0.192 0.214 0.250 0.100 0.100 0.127 0.169 0.211 0.252 0.294 0.107 0.128 0.149 0.170 0.211 0.252 0.294 0.100 0.100 0.123 0.163 0.204 0.244 0.283

800 0.387 0.387 0.455 0.455 0.284 0.284 0.335 0.335 0.323

900 0.433 0.433 0.510 0.510 0.319 0.319 0.375 0.375 0.362

1000 0.480 0.480 0.565 0.565 0.354 0.354 0.416 0.416 0.401

= 2 in.)


A312Gr304L A312Gr304L A312Gr304L A312Gr316L A312Gr316L A312Gr316L A312Gr316L Monel-400 Monel-400 Monel-400 Monel-400

1 0.85 0.85 1 1 0.85 0.85 1 1 0.85 0.85

40 20 40 20 40 20 40 20 40 20 40

0.124 0.100 0.124 0.100 0.132 0.100 0.132 0.100 0.128 0.100 0.129

0.149 0.100 0.150 0.100 0.158 0.101 0.158 0.100 0.154 0.100 0.154

0.174 0.145 0.175 0.129 0.185 0.152 0.185 0.126 0.179 0.148 0.179

0.198 0.192 0.199 0.171 0.210 0.201 0.210 0.167 0.204 0.197 0.205


0.224 0.240 0.240 0.213 0.236 0.251 0.251 0.208 0.230 0.245 0.245

0.249 0.287 0.287 0.255 0.263 0.300 0.300 0.249 0.255 0.293 0.293

0.283 0.333 0.333 0.297 0.297 0.349 0.349 0.290 0.290 0.341 0.341

0.323 0.380 0.380 0.338 0.338 0.398 0.398 0.330 0.330 0.389 0.389

Page 13 of 20

0.362 0.426 0.426 0.379 0.379 0.446 0.446 0.370 0.370 0.436 0.436

0.401 0.472 0.472 0.420 0.420 0.494 0.494 0.410 0.410 0.483 0.483

800 0.289 0.289 0.341 0.341 0.300 0.300 0.353 0.353 0.356 0.356 0.419 0.419 0.369 0.369 0.434 0.434

900 0.325 0.325 0.382 0.382 0.336 0.336 0.396 0.396 0.400 0.400 0.470 0.470 0.414 0.414 0.487 0.487

1000 0.360 0.360 0.424 0.424 0.373 0.373 0.439 0.439 0.443 0.443 0.521 0.521 0.459 0.459 0.540 0.540

800 0.459 0.459 0.540 0.540 0.337 0.337 0.397 0.397 0.383 0.383 0.450 0.450 0.401

900 0.514 0.514 0.605 0.605 0.378 0.378 0.445 0.445 0.429 0.429 0.505 0.505 0.450

1000 0.569 0.569 0.670 0.670 0.419 0.419 0.493 0.493 0.476 0.476 0.560 0.560 0.498


MATERIAL A53GrB A53GrB A53GrB A53GrB A335GrP11 A335GrP11 A335GrP11 A335GrP11 A312Gr304L A312Gr304L A312Gr304L A312Gr304L A312Gr316L A312Gr316L A312Gr316L A312Gr316L

MATERIAL A53GrB A53GrB A53GrB A53GrB A335GrP11 A335GrP11 A335GrP11 A335GrP11 A312Gr304L A312Gr304L A312Gr304L A312Gr304L A312Gr316L

JE 1 1 0.85 0.85 1 1 0.85 0.85 1 1 0.85 0.85 1 1 0.85 0.85

JE 1 1 0.85 0.85 1 1 0.85 0.85 1 1 0.85 0.85 1

SPAN 20 40 20 40 20 40 20 40 20 40 20 40 20 40 20 40

Design Temperature: 600°F and under (Insulation Design Pressure, psig 100 200 300 400 500 600 0.100 0.100 0.110 0.146 0.182 0.218 0.100 0.104 0.125 0.146 0.182 0.218 0.100 0.100 0.129 0.172 0.214 0.257 0.100 0.104 0.129 0.172 0.214 0.257 0.100 0.100 0.114 0.151 0.189 0.226 0.100 0.108 0.130 0.151 0.189 0.226 0.100 0.100 0.134 0.178 0.222 0.266 0.100 0.108 0.134 0.178 0.222 0.266 0.100 0.100 0.135 0.180 0.224 0.269 0.106 0.133 0.158 0.185 0.224 0.269 0.100 0.107 0.159 0.212 0.264 0.316 0.106 0.133 0.159 0.212 0.264 0.316 0.100 0.100 0.140 0.187 0.233 0.278 0.111 0.138 0.165 0.193 0.233 0.278 0.100 0.110 0.165 0.220 0.274 0.328 0.110 0.138 0.165 0.220 0.274 0.328

SPAN 20 40 20 40 20 40 20 40 20 40 20 40 20

Design Temperature: 601 - 800°F (Insulation = 3 in.) Design Pressure, psig 100 200 300 400 500 600 700 0.100 0.117 0.175 0.233 0.290 0.346 0.403 0.152 0.187 0.222 0.258 0.293 0.346 0.403 0.100 0.138 0.206 0.274 0.341 0.408 0.474 0.151 0.187 0.222 0.274 0.341 0.408 0.474 0.100 0.100 0.128 0.170 0.212 0.254 0.296 0.105 0.130 0.154 0.178 0.212 0.254 0.296 0.100 0.101 0.151 0.201 0.250 0.299 0.348 0.105 0.129 0.154 0.201 0.250 0.299 0.348 0.100 0.100 0.146 0.194 0.241 0.289 0.336 0.122 0.150 0.179 0.207 0.241 0.289 0.336 0.100 0.115 0.171 0.228 0.284 0.340 0.395 0.122 0.151 0.178 0.228 0.284 0.340 0.395 0.100 0.102 0.153 0.203 0.253 0.303 0.352

= 2 in.) 700 0.254 0.254 0.299 0.299 0.263 0.263 0.309 0.309 0.313 0.313 0.368 0.368 0.324 0.324 0.381 0.381


A312Gr316L A312Gr316L A312Gr316L

1 0.85 0.85

40 20 40

0.128 0.100 0.128

0.159 0.120 0.159

0.189 0.180 0.189

0.219 0.239 0.239


0.253 0.298 0.298

0.303 0.356 0.356

0.352 0.414 0.414

0.401 0.472 0.472

Page 14 of 20

0.450 0.529 0.529

0.498 0.586 0.586

900 0.357 0.420 0.369 0.434 0.439 0.439 0.516 0.516 0.455 0.455 0.535 0.535

1000 0.395 0.465 0.409 0.482 0.486 0.486 0.572 0.572 0.504 0.504 0.592 0.592


MATERIAL A53GrB A53GrB A335GrP11 A335GrP11 A312Gr304L A312Gr304L A312Gr304L A312Gr304L A312Gr316L A312Gr316L A312Gr316L A312Gr316L

JE 1 0.85 1 0.85 1 1 0.85 0.85 1 1 0.85 0.85

SPAN <40 <40 <40 <40 20 40 20 40 20 40 20 40

Design Temperature: 600°F and under (Insulation Design Pressure, psig 100 200 300 400 500 600 0.160 0.160 0.160 0.160 0.200 0.239 0.160 0.160 0.160 0.189 0.235 0.282 0.160 0.160 0.160 0.166 0.207 0.248 0.160 0.160 0.160 0.195 0.244 0.292 0.160 0.160 0.160 0.198 0.246 0.295 0.160 0.160 0.163 0.198 0.246 0.295 0.160 0.160 0.175 0.233 0.290 0.347 0.160 0.160 0.175 0.233 0.290 0.347 0.160 0.160 0.160 0.205 0.255 0.306 0.160 0.160 0.170 0.205 0.255 0.306 0.160 0.160 0.181 0.241 0.301 0.360 0.160 0.160 0.181 0.241 0.301 0.360

= 2 in.) 700 0.279 0.328 0.289 0.339 0.343 0.343 0.404 0.404 0.356 0.356 0.418 0.418

800 0.318 0.374 0.329 0.387 0.391 0.391 0.460 0.460 0.405 0.405 0.477 0.477



JE 1 1 0.85 0.85 1 1 0.85 0.85 1 1 0.85 0.85 1 1 0.85 0.85

SPAN 20 40 20 40 20 40 20 40 20 40 20 40 20 40 20 40


Design Temperature: 601 - 800°F (Insulation = 3 in.) Design Pressure, psig 100 200 300 400 500 600 700 0.160 0.160 0.192 0.255 0.318 0.380 0.442 0.160 0.189 0.226 0.264 0.318 0.380 0.442 0.160 0.160 0.226 0.301 0.374 0.448 0.520 0.160 0.188 0.227 0.301 0.374 0.448 0.520 0.160 0.160 0.160 0.187 0.233 0.279 0.325 0.160 0.160 0.160 0.187 0.233 0.279 0.325 0.160 0.160 0.166 0.220 0.275 0.329 0.382 0.160 0.160 0.166 0.220 0.275 0.329 0.382 0.160 0.160 0.160 0.213 0.265 0.317 0.369 0.160 0.160 0.183 0.214 0.265 0.317 0.369 0.160 0.160 0.188 0.250 0.312 0.373 0.434 0.160 0.160 0.188 0.250 0.312 0.373 0.434 0.160 0.160 0.168 0.223 0.278 0.332 0.386 0.160 0.160 0.193 0.226 0.278 0.332 0.386 0.160 0.160 0.197 0.262 0.327 0.391 0.455 0.160 0.160 0.197 0.262 0.327 0.391 0.455

800 0.504 0.504 0.592 0.592 0.370 0.370 0.436 0.436 0.420 0.420 0.495 0.495 0.440 0.440 0.518 0.518

Page 15 of 20

900 0.565 0.565 0.664 0.664 0.416 0.416 0.489 0.489 0.472 0.472 0.555 0.555 0.494 0.494 0.581 0.581

1000 0.625 0.625 0.735 0.735 0.461 0.461 0.542 0.542 0.522 0.522 0.615 0.615 0.547 0.547 0.643 0.643

800 0.363 0.427 0.376 0.442 0.447 0.447 0.526 0.526 0.463 0.463 0.545 0.545

900 0.408 0.480 0.422 0.497 0.501 0.501 0.590 0.590 0.519 0.519 0.611 0.611

1000 0.452 0.532 0.468 0.550 0.556 0.556 0.654 0.654 0.576 0.576 0.677 0.677

800 0.576 0.576 0.677 0.677 0.423 0.423 0.498 0.498

900 0.645 0.645 0.759 0.759 0.475 0.475 0.559 0.559

1000 0.714 0.714 0.840 0.840 0.526 0.526 0.619 0.619


MATERIAL A53GrB A53GrB A335GrP11 A335GrP11 A312Gr304L A312Gr304L A312Gr304L A312Gr304L A312Gr316L A312Gr316L A312Gr316L A312Gr316L

MATERIAL A53GrB A53GrB A53GrB A53GrB A335GrP11 A335GrP11 A335GrP11 A335GrP11

JE 1 0.85 1 0.85 1 1 0.85 0.85 1 1 0.85 0.85

JE 1 1 0.85 0.85 1 1 0.85 0.85

SPAN <40 <40 <40 <40 20 40 20 40 20 40 20 40

Design Temperature: 600°F and under (Insulation Design Pressure, psig 100 200 300 400 500 600 0.160 0.160 0.160 0.183 0.229 0.274 0.160 0.160 0.162 0.216 0.269 0.322 0.160 0.160 0.160 0.190 0.237 0.283 0.160 0.160 0.168 0.223 0.278 0.333 0.160 0.160 0.170 0.226 0.282 0.337 0.160 0.160 0.171 0.226 0.282 0.337 0.160 0.160 0.200 0.266 0.331 0.397 0.160 0.160 0.200 0.266 0.331 0.397 0.160 0.160 0.176 0.234 0.292 0.349 0.160 0.160 0.178 0.234 0.292 0.349 0.160 0.160 0.207 0.276 0.343 0.411 0.160 0.160 0.207 0.276 0.343 0.411

SPAN 20 40 20 40 20 40 20 40

Design Temperature: 601 - 800°F (Insulation = 3 in.) Design Pressure, psig 100 200 300 400 500 600 700 0.160 0.160 0.220 0.292 0.364 0.435 0.505 0.160 0.193 0.236 0.292 0.364 0.435 0.505 0.160 0.173 0.259 0.343 0.428 0.512 0.595 0.160 0.193 0.259 0.343 0.428 0.512 0.595 0.160 0.160 0.161 0.214 0.267 0.319 0.371 0.160 0.160 0.165 0.214 0.267 0.319 0.371 0.160 0.160 0.189 0.252 0.314 0.375 0.437 0.160 0.160 0.189 0.252 0.314 0.375 0.437

= 2 in.) 700 0.319 0.375 0.330 0.388 0.392 0.392 0.461 0.461 0.406 0.406 0.478 0.478


A312Gr304L A312Gr304L A312Gr304L A312Gr304L A312Gr316L A312Gr316L A312Gr316L A312Gr316L

1 1 0.85 0.85 1 1 0.85 0.85

20 40 20 40 20 40 20 40

0.160 0.160 0.160 0.160 0.160 0.160 0.160 0.160

0.160 0.160 0.160 0.160 0.160 0.164 0.160 0.165

0.183 0.191 0.215 0.215 0.192 0.201 0.226 0.226

0.243 0.243 0.286 0.286 0.255 0.255 0.300 0.300


0.303 0.303 0.357 0.357 0.317 0.317 0.373 0.373

0.363 0.363 0.427 0.427 0.380 0.380 0.447 0.447

0.422 0.422 0.496 0.496 0.442 0.442 0.520 0.520

0.480 0.480 0.565 0.565 0.503 0.503 0.592 0.592

Page 16 of 20

0.539 0.539 0.634 0.634 0.564 0.564 0.664 0.664

0.597 0.597 0.702 0.702 0.625 0.625 0.735 0.735

800 0.409 0.481 0.423 0.498 0.503 0.592 0.521 0.521 0.613 0.613

900 0.459 0.540 0.475 0.559 0.564 0.664 0.584 0.584 0.688 0.688

1000 0.508 0.598 0.526 0.619 0.625 0.735 0.647 0.647 0.762 0.762

800 0.647 0.647 0.762 0.762 0.476 0.476 0.560 0.560 0.541 0.541 0.636 0.636 0.566 0.566 0.666 0.666

900 0.726 0.726 0.854 0.854 0.534 0.534 0.629 0.629 0.606 0.606 0.713 0.713 0.635 0.635 0.747 0.747

1000 0.804 0.804 0.945 0.945 0.592 0.592 0.697 0.697 0.672 0.672 0.790 0.790 0.703 0.703 0.827 0.827


MATERIAL A53GrB A53GrB A335GrP11 A335GrP11 A312Gr304L A312Gr304L A312Gr316L A312Gr316L A312Gr316L A312Gr316L


JE 1 0.85 1 0.85 1 0.85 1 1 0.85 0.85

JE 1 1 0.85 0.85 1 1 0.85 0.85 1 1 0.85 0.85 1 1 0.85 0.85

SPAN <40 <40 <40 <40 <40 <40 20 40 20 40

Design Temperature: 600°F and under (Insulation Design Pressure, psig 100 200 300 400 500 600 0.180 0.180 0.180 0.206 0.257 0.308 0.180 0.180 0.182 0.243 0.303 0.362 0.180 0.180 0.180 0.214 0.266 0.319 0.180 0.180 0.189 0.251 0.313 0.375 0.180 0.180 0.191 0.254 0.317 0.379 0.180 0.180 0.225 0.299 0.373 0.446 0.180 0.180 0.198 0.264 0.328 0.393 0.180 0.180 0.198 0.264 0.328 0.393 0.180 0.180 0.233 0.310 0.386 0.462 0.180 0.180 0.233 0.310 0.386 0.462

SPAN 20 40 20 40 20 40 20 40 20 40 20 40 20 40 20 40

Design Temperature: 601 - 800°F (Insulation = 3.5 in.) Design Pressure, psig 100 200 300 400 500 600 700 0.180 0.180 0.247 0.328 0.409 0.489 0.569 0.180 0.200 0.248 0.328 0.409 0.489 0.569 0.180 0.195 0.291 0.386 0.481 0.575 0.669 0.180 0.201 0.291 0.386 0.481 0.575 0.669 0.180 0.180 0.181 0.241 0.300 0.359 0.418 0.180 0.180 0.181 0.241 0.300 0.359 0.418 0.180 0.180 0.213 0.283 0.353 0.422 0.491 0.180 0.180 0.213 0.283 0.353 0.422 0.491 0.180 0.180 0.206 0.274 0.341 0.408 0.474 0.180 0.180 0.206 0.274 0.341 0.408 0.474 0.180 0.180 0.242 0.322 0.401 0.480 0.558 0.180 0.180 0.242 0.322 0.401 0.480 0.558 0.180 0.180 0.216 0.287 0.357 0.427 0.497 0.180 0.180 0.216 0.287 0.357 0.427 0.497 0.180 0.180 0.254 0.337 0.420 0.503 0.585 0.180 0.180 0.254 0.337 0.420 0.503 0.585


= 2 in.) 700 0.358 0.422 0.371 0.436 0.441 0.519 0.457 0.457 0.538 0.538


MATERIAL A53GrB A53GrB A335GrP11 A335GrP11 A312Gr304L A312Gr304L A312Gr316L A312Gr316L

MATERIAL A53GrB A53GrB A53GrB A335GrP11 A335GrP11 A312Gr304L A312Gr304L A312Gr316L A312Gr316L

JE 1 0.85 1 0.85 1 0.85 1 0.85

JE 1 1 0.85 1 0.85 1 0.85 1 0.85


SPAN <40 <40 <40 <40 <40 <40 <40 <40


SPAN 20 40 <40 <40 <40 <40 <40 <40 <40

Design Temperature: 601 - 800°F (Insulation = 3.5 in.) Design Pressure, psig 100 200 300 400 500 600 700 0.180 0.184 0.275 0.365 0.455 0.543 0.632 0.180 0.207 0.275 0.365 0.455 0.543 0.632 0.180 0.216 0.323 0.429 0.535 0.639 0.743 0.180 0.180 0.201 0.267 0.333 0.399 0.464 0.180 0.180 0.237 0.315 0.392 0.469 0.546 0.180 0.180 0.229 0.304 0.379 0.453 0.527 0.180 0.180 0.269 0.358 0.446 0.533 0.620 0.180 0.180 0.240 0.318 0.397 0.475 0.552 0.180 0.189 0.282 0.375 0.467 0.558 0.649

Page 17 of 20

= 2 in.) 700 0.398 0.468 0.412 0.485 0.490 0.577 0.508 0.598

800 0.454 0.534 0.470 0.553 0.559 0.657 0.579 0.681

900 0.510 0.600 0.528 0.621 0.627 0.737 0.649 0.764

1000 0.565 0.665 0.585 0.688 0.694 0.817 0.719 0.846

800 0.719 0.719 0.846 0.529 0.622 0.601 0.707 0.629 0.740

900 0.806 0.806 0.949 0.594 0.698 0.674 0.793 0.705 0.830

1000 0.893 0.893 1.050 0.658 0.774 0.746 0.878 0.781 0.919

800 0.499 0.588 0.517 0.608 0.615 0.723 0.637 0.749

900 0.561 0.660 0.580 0.683 0.689 0.811 0.714 0.840

1000 0.621 0.731 0.643 0.757 0.764 0.899 0.791 0.931

800 0.791 0.791 0.931 0.582

900 0.887 0.887 1.044 0.653

1000 0.982 0.982 1.155 0.724



MATERIAL A53GrB A53GrB A53GrB A335GrP11

JE 1 0.85 1 0.85 1 0.85 1 0.85

JE 1 1 0.85 1

SPAN <40 <40 <40 <40 <40 <40 <40 <40


SPAN 20 40 <40 <40

Design Temperature: 601 - 800°F (Insulation = 3.5 in.) Design Pressure, psig 100 200 300 400 500 600 700 0.200 0.202 0.302 0.401 0.500 0.598 0.695 0.200 0.213 0.302 0.401 0.500 0.598 0.695 0.200 0.238 0.356 0.472 0.588 0.703 0.818 0.200 0.200 0.221 0.294 0.367 0.439 0.511

= 2 in.) 700 0.438 0.515 0.453 0.533 0.539 0.634 0.559 0.657


A335GrP11 A312Gr304L A312Gr304L A312Gr316L A312Gr316L

0.85 1 0.85 1 0.85

<40 <40 <40 <40 <40

0.200 0.200 0.200 0.200 0.200

0.200 0.200 0.200 0.200 0.207

0.260 0.252 0.296 0.264 0.310

0.346 0.334 0.393 0.350 0.412


0.431 0.417 0.490 0.437 0.514

0.516 0.498 0.586 0.522 0.614

0.601 0.580 0.682 0.607 0.714

0.685 0.661 0.777 0.692 0.814

Page 18 of 20

0.768 0.741 0.872 0.776 0.913

0.851 0.821 0.966 0.859 1.011

800 0.545 0.641 0.564 0.664 0.670 0.789 0.695 0.817

900 0.612 0.719 0.633 0.745 0.752 0.885 0.779 0.917

1000 0.678 0.798 0.702 0.826 0.833 0.980 0.863 1.016

800 0.863 1.016 0.635 0.747 0.721 0.848 0.755 0.888

900 0.968 1.139 0.712 0.838 0.808 0.951 0.846 0.996

1000 1.071 1.261 0.789 0.929 0.896 1.054 0.938 1.103

900 0.764 0.899 0.791 0.931 0.940 1.106 0.974

1000 0.847 0.997 0.877 1.032 1.042 1.225 1.079




JE 1 0.85 1 0.85 1 0.85 1 0.85

JE 1 0.85 1 0.85 1 0.85 1 0.85

SPAN <40 <40 <40 <40 <40 <40 <40 <40


SPAN <40 <40 <40 <40 <40 <40 <40 <40


= 2 in.) 700 0.478 0.562 0.495 0.582 0.588 0.692 0.610 0.717


MATERIAL A53GrB A53GrB A335GrP11 A335GrP11 A312Gr304L A312Gr304L A312Gr316L

JE 1 0.85 1 0.85 1 0.85 1

SPAN <40 <40 <40 <40 <40 <40 <40

Design Temperature: 600°F and under (Insulation Design Pressure, psig 100 200 300 400 500 600 0.200 0.200 0.258 0.344 0.429 0.513 0.200 0.203 0.304 0.404 0.504 0.604 0.200 0.200 0.268 0.356 0.444 0.531 0.200 0.210 0.315 0.419 0.522 0.625 0.200 0.213 0.319 0.424 0.528 0.632 0.200 0.251 0.375 0.499 0.621 0.744 0.200 0.221 0.330 0.439 0.547 0.655

= 2 in.) 700 0.597 0.703 0.618 0.727 0.735 0.865 0.762

800 0.681 0.801 0.705 0.829 0.838 0.986 0.868


A312Gr316L


0.85

JE 1 0.85 1 0.85 1 0.85 1 0.85

<40

SPAN <40 <40 <40 <40 <40 <40 <40 <40

0.200

0.260

0.389

0.517


0.644

0.771

0.896

Page 19 of 20

1.022

1.146

1.270

800 1.079 1.270 0.794 0.934 0.901 1.060 0.943 1.110

900 1.210 1.423 0.891 1.048 1.010 1.189 1.058 1.245

1000 1.339 1.576 0.987 1.161 1.119 1.317 1.172 1.379

= 2 in.) 700 800 0.717 0.817 0.843 0.961 0.742 0.846 0.873 0.995 0.882 1.006 1.038 1.183 0.914 1.042 1.076 1.226

900 0.917 1.079 0.950 1.117 1.128 1.327 1.169 1.375

1000 1.017 1.196 1.053 1.238 1.250 1.471 1.295 1.523

900 1.452 1.708 1.069 1.257 1.213 1.427 1.270 1.494

1000 1.607 1.891 1.184 1.393 1.343 1.580 1.406 1.654


PIPE NOMINAL DIAMETER : 36 in. MATERIAL A53GrB A53GrB A335GrP11 A335GrP11 A312Gr304L A312Gr304L A312Gr316L A312Gr316L

JE 1 0.85 1 0.85 1 0.85 1 0.85

SPAN <40 <40 <40 <40 <40 <40 <40 <40

Design Temperature: 600°F and under (Insulation 100 200 300 400 500 600 0.200 0.207 0.310 0.412 0.514 0.616 0.200 0.244 0.365 0.485 0.605 0.724 0.200 0.215 0.321 0.427 0.533 0.638 0.200 0.252 0.378 0.502 0.627 0.750 0.200 0.256 0.382 0.508 0.634 0.758 0.200 0.301 0.450 0.598 0.746 0.892 0.200 0.265 0.396 0.527 0.657 0.786 0.200 0.312 0.466 0.620 0.773 0.925


JE 1 0.85 1 0.85 1 0.85 1 0.85

SPAN <40 <40 <40 <40 <40 <40 <40 <40

Design 100 0.200 0.200 0.200 0.200 0.200 0.200 0.200 0.200

Temperature: 601 - 800°F (Insulation = 3.5 in.) 200 300 400 500 600 700 0.331 0.495 0.657 0.818 0.978 1.137 0.389 0.582 0.773 0.963 1.151 1.338 0.242 0.362 0.481 0.600 0.718 0.836 0.285 0.426 0.566 0.706 0.845 0.983 0.275 0.412 0.547 0.682 0.816 0.949 0.324 0.484 0.644 0.802 0.960 1.116 0.288 0.431 0.573 0.714 0.854 0.994 0.339 0.507 0.674 0.840 1.005 1.169

800 1.295 1.523 0.952 1.120 1.081 1.272 1.132 1.332



Page 20 of 20

RECORD OF REVISIONS (as compared to August, 1998 issue) Logo’s were revised May, 2005 to be in alignment with Corporate Communications guidelines. This Standard has been revised in its entirety to reflect changes in formatting, added dual company logo’s and names, conversion from WordPerfect to Microsoft Word, etc… throughout the document. Technical content was not revised during this revision.

EG3202 Pipe Thickness Retirement Guide

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