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.
Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE
3.0
Issue Date: June, 2000
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
Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE
5.1
Issue Date: June, 2000
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
Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE
Issue Date: June, 2000
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
Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE
SL
Issue Date: June, 2000
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
Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE
Wi Wi
Issue Date: June, 2000
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.
Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE
Issue Date: June, 2000
Page 8 of 20
PIPE THICKNESS RETIREMENT TABLES
PIPE NOMINAL DIAMETER : 1.5 in.
MATERIAL A53GrB A335GrP11 A312Gr304L A312Gr316L Monel-400
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
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
Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE
Issue Date: June, 2000
Page 9 of 20
PIPE NOMINAL DIAMETER : 2.5 in.
MATERIAL A53GrB A335GrP11 A312Gr304L A312Gr316L Monel-400
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 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
Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE
Issue Date: June, 2000
Page 10 of 20
PIPE NOMINAL DIAMETER : 4 in.
MATERIAL A53GrB A335GrP11 A312Gr304L A312Gr304L A312Gr316L A312Gr316L Monel-400 Monel-400
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
PIPE NOMINAL DIAMETER : 6 in.
MATERIAL A53GrB A335GrP11 A312Gr304L A312Gr304L A312Gr316L A312Gr316L Monel-400 Monel-400
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 0.100 0.100 0.100 0.100 0.100 0.113 0.100 0.100 0.100 0.100 0.100 0.117 0.100 0.100 0.100 0.100 0.117 0.140 0.100 0.100 0.100 0.110 0.137 0.164 0.100 0.100 0.100 0.100 0.121 0.145 0.100 0.100 0.100 0.114 0.142 0.170 0.100 0.100 0.100 0.100 0.124 0.148 0.100 0.100 0.100 0.117 0.145 0.174
= 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
Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE
MATERIAL A53GrB A335GrP11 A312Gr304L A312Gr304L A312Gr316L A312Gr316L Monel-400 Monel-400
JE 1 1 1 0.85 1 0.85 1 0.85
SPAN 20 20 20 20 20 20 20 20
Issue Date: June, 2000
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
PIPE NOMINAL DIAMETER : 8 in.
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
Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE
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
Issue Date: June, 2000
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
PIPE NOMINAL DIAMETER : 10 in.
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.)
Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE
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
Issue Date: June, 2000
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
PIPE NOMINAL DIAMETER : 12 in.
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
Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE
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
Issue Date: June, 2000
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
PIPE NOMINAL DIAMETER : 14 in.
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
Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE
MATERIAL A53GrB A53GrB A53GrB A53GrB A335GrP11 A335GrP11 A335GrP11 A335GrP11 A312Gr304L A312Gr304L A312Gr304L A312Gr304L A312Gr316L A312Gr316L A312Gr316L 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
SPAN 20 40 20 40 20 40 20 40 20 40 20 40 20 40 20 40
Issue Date: June, 2000
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
PIPE NOMINAL DIAMETER : 16 in.
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
Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE
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
Issue Date: June, 2000
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
PIPE NOMINAL DIAMETER : 18 in.
MATERIAL A53GrB A53GrB A335GrP11 A335GrP11 A312Gr304L A312Gr304L A312Gr316L A312Gr316L A312Gr316L A312Gr316L
MATERIAL A53GrB A53GrB A53GrB A53GrB A335GrP11 A335GrP11 A335GrP11 A335GrP11 A312Gr304L A312Gr304L 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
PIPE NOMINAL DIAMETER : 20 in.
= 2 in.) 700 0.358 0.422 0.371 0.436 0.441 0.519 0.457 0.457 0.538 0.538
Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE
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
Issue Date: June, 2000
SPAN <40 <40 <40 <40 <40 <40 <40 <40
Design Temperature: 600°F and under (Insulation Design Pressure, psig 100 200 300 400 500 600 0.180 0.180 0.180 0.229 0.286 0.342 0.180 0.180 0.203 0.270 0.336 0.402 0.180 0.180 0.180 0.237 0.296 0.354 0.180 0.180 0.210 0.279 0.348 0.417 0.180 0.180 0.212 0.282 0.352 0.421 0.180 0.180 0.250 0.332 0.414 0.496 0.180 0.180 0.220 0.293 0.365 0.437 0.180 0.180 0.259 0.345 0.429 0.514
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
PIPE NOMINAL DIAMETER : 22 in.
MATERIAL A53GrB A53GrB A335GrP11 A335GrP11 A312Gr304L A312Gr304L A312Gr316L A312Gr316L
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
Design Temperature: 600°F and under (Insulation Design Pressure, psig 100 200 300 400 500 600 0.200 0.200 0.200 0.252 0.314 0.376 0.200 0.200 0.223 0.296 0.370 0.443 0.200 0.200 0.200 0.261 0.325 0.390 0.200 0.200 0.231 0.307 0.383 0.458 0.200 0.200 0.234 0.311 0.387 0.463 0.200 0.200 0.275 0.366 0.456 0.545 0.200 0.200 0.242 0.322 0.401 0.480 0.200 0.200 0.285 0.379 0.472 0.565
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
Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE
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
Issue Date: June, 2000
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
PIPE NOMINAL DIAMETER : 24 in.
MATERIAL A53GrB A53GrB A335GrP11 A335GrP11 A312Gr304L A312Gr304L A312Gr316L A312Gr316L
MATERIAL A53GrB A53GrB A335GrP11 A335GrP11 A312Gr304L A312Gr304L A312Gr316L A312Gr316L
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
Design Temperature: 600°F and under (Insulation Design Pressure, psig 100 200 300 400 500 600 0.200 0.200 0.207 0.275 0.343 0.410 0.200 0.200 0.243 0.323 0.403 0.483 0.200 0.200 0.214 0.285 0.355 0.425 0.200 0.200 0.252 0.335 0.418 0.500 0.200 0.200 0.255 0.339 0.423 0.506 0.200 0.201 0.300 0.399 0.497 0.595 0.200 0.200 0.264 0.351 0.438 0.524 0.200 0.208 0.311 0.413 0.515 0.616
SPAN <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 0.200 0.221 0.330 0.438 0.545 0.652 0.758 0.200 0.260 0.388 0.515 0.642 0.767 0.892 0.200 0.200 0.241 0.321 0.400 0.479 0.557 0.200 0.200 0.284 0.377 0.471 0.563 0.655 0.200 0.200 0.274 0.365 0.455 0.544 0.633 0.200 0.216 0.323 0.429 0.535 0.640 0.744 0.200 0.200 0.288 0.382 0.476 0.570 0.662 0.200 0.226 0.338 0.450 0.560 0.670 0.779
= 2 in.) 700 0.478 0.562 0.495 0.582 0.588 0.692 0.610 0.717
PIPE NOMINAL DIAMETER : 30 in.
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
Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE
A312Gr316L
MATERIAL A53GrB A53GrB A335GrP11 A335GrP11 A312Gr304L A312Gr304L A312Gr316L 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
Issue Date: June, 2000
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
Design Temperature: 601 - 800°F (Insulation = 3.5 in.) Design Pressure, psig 100 200 300 400 500 600 700 0.200 0.276 0.412 0.547 0.682 0.815 0.948 0.200 0.324 0.485 0.644 0.802 0.959 1.115 0.200 0.202 0.302 0.401 0.500 0.598 0.696 0.200 0.237 0.355 0.472 0.588 0.704 0.819 0.200 0.229 0.343 0.456 0.568 0.680 0.791 0.200 0.270 0.404 0.536 0.668 0.800 0.930 0.200 0.240 0.359 0.478 0.595 0.712 0.828 0.200 0.283 0.423 0.562 0.700 0.838 0.974
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
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 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
Standard No: 3202 PIPE THICKNESS RETIREMENT GUIDE
Issue Date: June, 2000
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.