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STANDARDS OFTUBULAR EXC.HANGER

MANUFACTURERSASSOCIATION

Fifth Edition1968

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TUBULAR EXCHANGER MANUFACTURERS ASSOCIATION. INC.

331 Madison Avenue. New York. N.Y. 10017

George P. Byrne. Ir•• Secretary-Treasurer

MEMBERSHIP LIST

TUBULAR EXCHANGER MANUFACTURERS ASSOCIATION

Comprising Manufacturers of Various Types

of Shell and Tube Heat Exchange Equipment

American Standard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. P. O. Box 1102~ Heat Transfer Division Buffalo, N. Y. 14240

Combustion Engineering. Inc. . 1000 Prospect Hill RoadWindsor. Conn. 06095

Engineers & Fabricators. Inc. . P. O. Box 7395Houston. Texas 77008

HeaTran Equipment Division P. O. Box 1112The Belmas Company, Inc. Houston, Texas 77001

Industrial Fabricating Company P. O. Box 45710Tulsa, Okla. 74145

Nooter Corporation 1400 S. Third StreetSt. louis, Mo. 63166

Richmond Engineering Company. Inc. . 7th & Hospital Sts.Richmond, Va. 23219

Southwestern Engineering Company 6111 East Bandini Blvd.Subsidiary of Saturn Industries los Angeles, Calif. 90054

Struthers Nuclear & Process Company 1003 Pennsylvania Ave., W.Warren. Pat 16365

Henry Vogt Machine Company , 10th & Ormsby Sts.Louisvilre, Ky. 40210

Western Supply Company. . . . . . . . . . . . . . . . .. ..... .P. O. Box 2739Tulsa, Okla. 74101

The Whitlock Manufacturing Company West Hartford. Conn. 06110

Yuba Heat Transfer Division P. O. Box 3158Yuba Industries, Inc. Tulsa, Oklahoma 74101

Yuba Manufacturing Division 675 East H StreetBenicia. California 94510

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TECHNICAL COMMITTEE

TUBULAR EXCHANGER MANUFACTURERS ASSOCIATION

Wilmer Reynolds, Jr.-Chairman Assistant ManagerHeat Exchanger Division

Henry Vogt Machine Company

Wayne W. A'Neal Chief Mechanical EngineerIndustrial Fabricating Company

G. R. Brown ManagerHeat Exchanger Design Section

Struthers Nuclear & Process Company

William E. Brockel Administrative EngineerCombustion Engineering, Inc.

Robert M. Dick Senior EngineerProcess Equipment Department

Yuba Manufacturing Division

William J. Field Design EngineerMissouri Boiler & Tank Company

Division of Nooter Corporation

Edward W. Flaxbart Vice PresidentWestern Supply Company

Harold R. Lawrance Chief Mechanical EngineerYuba Heat Transfer Division

Yuba Industries, Inc.

A. N. Major Chief EngineerThe Whitlock Manufacturing Company

Robert A. McWhirter Chief EngineerHeaTran Equipment Division

The Belmas Company, Inc.

William H. Poore. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .Chief EngineerAmerican Standard

Heat Transfer Division

N. R. Gainsboro Senior Project EngineerSouthwestern Engineering Company

Subsidiary of Saturn Industries

Dan Ringo Vice PresidentEngineers & Fabricators, Inc.

Samuel P. Mahanes, Jr Chief EngineerHeat Transfer Department

Richmond Engineering Company, Inc.

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PREFACE

Filth Edilion-19GB. Second Printing-1970. Third Printinq-1972. Fourth Printinq-1974

The fifth edition of the Standards retains the useful data and features foundin the previous edition. plus many clarifications and expansions. All sectionshave been rewritten to incorporate new data which were not previously avail­able. This second printing includes additional updated material and certaineditorial changes and corrections, including suggestions which have resultedfrom extensive use of the Standards by both manufacturers and users of shelland tube exchangers.

A Mechanical Standards Class "B", covering the requirements of heat ex­changers for chemical process service, is included to supplement Classes "R"and "C".

The Fifth Edition of the TEMA Standardswas compiled by the Editorial Committee

of the Technical Committee

Dan Ringo EDITOR

William H. Poore American StandardHeat Transfer Division

William E. Brockel Combustion Engineering, Inc.

Dan Ringo Engineers & Fabricators, Inc.

Wayne W. A'Neal Industrial Fabricating CompanyHerbert J. DanneA. J. Meehan

Aart W. VanHooff Richmond Engineering Company, Inc.Heat Transfer Department

H. A. Backstrom Struthers Nuclear & Process CompanyDaniel W. Lyons

Wilmer Reynolds. Jr Henry Vogt Machine Company

Edward W. Flaxbart Western Supply CompanyJ. R. Maslanka

A. N. Major The Whitlock Manufacturing Company

Fred H. Linley, Jr Yuba Heat Transfer Division

D. P. Billings Yuba Manufacturing DivisionYuba Industries, Inc.

Marvin D. Pearson Yuba Industries, Inc.

Karl A. Gardner..... Consultant

VII

The Tubular Exchanger Manufacturers Association, Inc.

acknowledges with appreciation

the cooperation of

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American Society of Mechanical Engineers

American National Standards Institute, Inc.

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2 CONTENTS

:I Symbol &Section Paragraph Page

~ MEMBERSHIP LIST ............................ V

~ PREFACE VII................... , ...............

~ NOTE TO USERS .............................. 1

:I 1 . N NOMENCLATURE

I 1 Size Numbering and Type Designation-Recommended

~ Practice · ............................... 2

~ 2 Heat Exchanger Components ................... 4

~ 2 F FABRICATION TOLERANCES

~ 1 External Dimensions, Nozzle, and Support locations .. 7

~ 2 Tubesheets, Partitions, Covers, and Flanges ........ 8,3 G GENERAL FABRICATION AND PERFORMANCE

J INFORMATION

~1 Shop Operation .... , ................... 10

I2 Inspection ................................. 10

3 Name Plates · .............................. 10I

4 Drawings and ASME Code Data Reports ........... 11~

5 Guarantees · ................. ............. 11

I6 Preparation of Heat Exchangers for Shipment ...... 12

I 7 General Construction Features .................. 12

4 E INSTALLATION, OPERATION, AND MAINTENANCE

1 Performance · .............................. 13

2 Installation · ............................... 13

3 Operation ........................ , ........ 14

4 Maintenance · .............................. 15

IX

CONTENTS

SectionSymbol &Paragraph Page

5 R MECHANICAL STANDARDS TEMACLASS "R" HEATEXCHANGERS

Gaskets 34

Nozzles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Shells and Shell Covers . . . . . . . . . . . . . . . . . . . . . . 25

Nozzles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

67

52

55

58

46

68

64

Tubesheets .

Floating Heads .

Shells and Shell Covers .

End Flanges and Bolting , . . 83

Baffles and Support Plates. . . . . . . . . . . . . . . . . . . . . 60

Channels, Covers, and Bonnets. . . . . . . . . . . . . . . . . 79

Baffles and Support Plates. . . . . . . . . . . . . . . . . . . . 27

Scope and General Requirements .

Channels, Covers, and Bonnets ....

End Flanges and Bolting. . . . . . . . . . . . . . . . . . . . . . 50

Floating Heads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Tubes .

Scope and General Requirements. . . . . . . . . . . . 19

Gaskets .

Tubesheets ..... . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Tubes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

MECHANICAL STANDARDS TEMA CLASS "c" HEATEXCHANGERS

1

2

3

4

., 5

6

7

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10

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3

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Symbol &Paragraph

B

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2

CONTENTS

MECHANICAL STANDARDS CLASS "B" HEATEXCHANGERS

Scope and General Requirements .

Tubes .

Page

85

88

8

9

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3 Shells and Shell Covers. . . . . . . . . . . . . . . . . . . . . . . 91

4 Baffles and Support Plates. . . . . . . . . . . . . . . . . . . . 93

5 Floating Heads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

6 Gaskets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 100

7 Tubesheets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 101

8 Channels, Covers, and Bonnets. . . . . . . . . . . . . . . .. 112

9 Nozzles " 114

10 End Flanges and Bolting. . . . . . . . . . . . . . . .. . . . .. 116

MATERIALS SPECIFICATIONS

1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 118

2 Tubes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 118

3 Shells. Channels. Covers, Floating Heads. Tubesheets,and Flanges 118

4 Baffles. Support Plates. Tie Rods, and Spacers. . . . .. 120

5 Gaskets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 120

6 Bolting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 120

THERMAL STANDARDS

1 Scope and Basic Relations . 122

2 Fouling Resistances 123

3 Fluid Temperature Relations. . . . . . . . . . . . . . . . . .. 127

4 Heat Transfer and Pressure Drop Data " 128

XI

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CONTENTSSymbol &

Section Paragraph Page

10 P PHYSICAL PROPERTIES OF FLUIDS

1 Average Fluid Temperature .................... 140

2 Fluid Density .............................. 140

3 Specific Heat .............................. 140

4 Heat Content of Petroleum Fractions ............. 141

5 Thermal Conductivity ........................ 141

6 Viscosity .................................. 142

7 Critical Properties .......................... 142

8 Selected References .......................... 142

11 D GENERAL INFORMATION(See Detailed Table of Contents) ................ 171

INDEX ..................................... 199

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Note to Users

NOTE TO USERS OF

THE TEMA STANDARDS

Efficient use of the TEMA Standards requires specifying not

only TEMA but also the Mechanical Standards Class "R"."C" or "B", to which the manufacturer must adhere. TEMA

"R", TEMA "C", and TEMA "B" are meaningful specifications.TEMA alone is not.

Corresponding subject matter in the three Mechanical Stan­dards is covered by paragraphs identically numbered except

for the prefix letter. Reference must be made to the paragraphsunder the Class specified since numerous variations existamong identically numbered paragraphs in subsections "R"."C", and "B".

It is the intention of the Tubular Exchanger ManufacturersAssociation that this edition of its Standards may be used be­ginning with the date of issuance, and that its requirementssupersede those of the previous edition six months from suchdate of issuance, except for heat exchangers contracted forprior to the end of the six month period. For this purpose, thedate of issuance is January 1. 1968. The date of issuance forthe second printing is May I, 1970. The date of issuance forthe third printing is June I, 1972. The date of issuance forthe fourth printing is July 1, 1974.

Questions on interpretation of the TEMA Standards should beaddressed to the Secretary. Inquiries will be handled promptlyunless committee action is required. Inquiries requiring devel­opment of new technical information will only be transmittedthrough the next addendum or edition of the Standards.

STANDARDS OF TUBULAR EXCHANGER MANUFACTURERS ASSOCIATION • 1

SECTION 1

Heat Exchanger Nomenclature

N-l.35

N-l.32

Fixed tubesheet exchangerwith removable channel and cover, bonnet type rear head, twopass shell, 33*" inside diameter with tubes 8' long.SIZE 33·96 TYPE AFM.

Spllt-ring floating head exchanger with removable channel and cover, single pass shell,23~" inside diameter with tubes 16' long.SIZE 23·192 TYPE AES.

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•STANDARDS OF TUBULAR EXCHANGER MANUFACTURERS ASSOCIATION2 •

Fixed tubesheet exchanger having stationary and rear heads integral with tubesheets,single pass shell, 17" inside diameter with tubes 16' long.SIZE 17·192 TYPE CEN.

N-l.4 SPECIAL DESIGNSSpecial designs are not covered and may be described as best suits the manufacturer.

Putt-through floating head kettle type reboiler having stationary head integral with tube­sheet. 23" port diameter and 37" inside shell diameter with tubes 16' long.SIZE 23/37·192 TYPE CKT.

N-I.34

N-I.2 TYPEType designation shall be by letters describing stationary head, shell (omitted for bundles only),and rear head, in that order, as indicated in Figure N·1.2.

N-l.3 TYPICAL EXAMPLES

N-l.31

N;,1 SIZE NUMBERING AND TYPE DESIGNATION-RECOMMENDED PRACTICEIt is recommended that heat exchanger size and type be designated by numbers and letters as describedbelow.

N-I.1 SIZESizes of shells (and tube bundles) shall be designated by numbers describing shell (and tubebundle) diameters and tube lengths, as follows:

N-l.11 NOMINAL DIAMETERThe nominal diameter shall be the inside diameter of the shell in inches, rounded off tothe nearest integer. For kettle reboilers the nominal diameter shall be the port diameterfollowed by the shell diameter, each rounded off to the nearest integer.

N-l.12 NOMINAL LENGTHThe nominal length shall be the tube length in inches. Tube length for straight tubesshall be taken as the actual overall length. For u-tubes the length shall be taken as thestraight length from end of tube to bend tangent.

U-tube exchanger with bonnet type stationary head, split flow shell, 19" inside diameterwith tubes 7' straight length.SIZE 19-84 TYPE BGU.

N-l.33

c

REAR ENDHEAD TYPES

c-r-"-'

L ~ITFIXED TUBESHEET

LIKE "A" STATIONARY HEAD

M~FIXED TUBESHEET

LIKE "B" STATIONARY HEAD

C"'...,.-,;J

N '~ITFIXED TUBE SHEET

LIKE "C" STATIONARY HEAD

P ~ITOUTSIDE PACKED FLOATING HEAD

•.""fJ~"", .\\

5.,r'~,..:L

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FLOATING HEADWITH BACKING DEVICE

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'~\"" "T "r"'":-l r:j...:.:~{~l=..!:.";'

PULL THROUGH flOATING HEAD

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U·TUBE BUNDLE

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PACKED FLOATING TUBESHEET"WITH LANTERN RING

SHEU TYPES

~ AE

ONE PASS SHELL

~....._._.....--- ~F

TWO PASS SHELLWITH LONGITUDINAL BAFFLE

.

~ -----}--- ~G

SPLIT flOW

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DOUBLE SPLIT FLOW

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DIVIDED FLOW

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KIII

1- .LKmLE TYPE REBOILER

SECTION 1

Heat Exchanger Nomenclature

I I,.,CHANNEL

AND REMOVABLE COVER

FRONT END

STATIONARY HEAD TYPES

BONNET (INTEGRAL COVER)

FIGURE N-l.2

CHANNEL INTEGRAL WITH TUBE­SHEET AND REMOVABLE COVER

SPECIAL HIGH PRESSURE CLOSURE

FIXEDTUlIESHEET

ONlY

REMOYAlILEiHl'-"-~~TUllE

BUNIlU!ONLY

A

B

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STANDARDS OF TUBULAR EXCHANGER MANUFACTURERS ASSOCIATION • 3

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20. Slip-on Backing Flange21. Floating Head Cover-External22. Floating Tubesheet Skirt23. Packing Box Flange24. Packing25. Packing Follower Ring26. lantern Ring27. Tie Rods and Spacers28. Transverse Baffles or Support Plates29. Impingement Baffle30. longitudinal Baffle31. Pass Partition32. Vent Connection33. Drain Connection34. Instrument Connection35. Support Saddle36. lifting lug37. Support Bracket38. Weir39. liquid level Connection

AES

1

STANDARDS OF TUBULAR EXCHANGER MANUFACTURERS ASSOCIATION

FIGURE N.2

For the purpose of establishing standard terminology, Figure N·2 illustrates various types of heat ex­changers. Typical parts and connections, for illustrative purposes only, are numbered for identificationin Table N·2.

TABLE N.2

1. Stationary Head-Channel2. Stationary Head-Bonnet3. Stationary Head Flange-Channel or Bonnet4. Channel Cover5. Stationary Head Nozzle6. Stationary Tubesheet7. Tubes8. Shell9. Shell Cover

10. Shell Flange-Stationary Head End11. Shell Flange-Rear Head End12. Shell Nozzle13. Shell Cover Flange14. Expansion Joint15. Floating Tubesheet16. Floating Head Cover17. Floating Head Flange18. Floating Head Backing Device19. Split Shear Ring

4 •

SECTION 1Heat Exchanger Nomenclature

N·2 NOMENCLATURE OF HEAT EXCHANGER COMPONENTS

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SECTION 1Heat Exchanger Nomenclature

fiGURE N.2 (CONTINUED)

STANDARDS OF TUBULAR EXCHANGER MANUFACTURERS ASSOCIATION • 5

.IOU.. N.2 (CONTINUID)

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STANDARDS OF TUBULAR EXCHANGER MANUFACTURERS ASSOCIATION6 •

SECTION 1

Heat Exchanger Nomenclature