Heat Exchanger Piping

TRAINING MANUAL- PIPING

Uhde India Limited

PIPING STUDY HEAT EXCHANGER PIPING

DOC No. : 29040-PI-UPS-1004 Rev.

: R0

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CONTENTS Page 0.0

Cover Sheet

1

List of drawings

2-3

1.0

Introduction

4

2.0

Location

4-5

3.0

Access for Operation & Maintenance

5

4.0

Key Words

6

5.0

Steps to do Heat Exchanger Piping

6-7

6.0

Heat Exchanger Piping

7-8

Applicable Revision: Prepared:

Checked:

Approved:

Date: First Edition: R0 Prepared: AKB

Date:

Date:

Checked: TNG

Approved: RUD

Date: File Name:

Date: Server: PUNE: KUMUS 207

Date: VKO: KUMUS 209

TRAINING MANUAL- PIPING PIPING STUDY HEAT EXCHANGER PIPING

Uhde India Limited

SR.NO. DWG.NO.


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DESCRIPTION

1

HEP1

EXCHANGER APPLICATION SHOWN ON A PROCESS FLOW DIAGRAM SHELL AND TUBE HEAT EXCHANGER WITH REMOVABLE TUBE BUNDLE SAMPLE OF TUBE AND SHELL EXCHANGER PASSES

2

HEP2

3

HEP3

4

HEP4

5

HEP5

TYPES OF EXCHANGER : SHELL & TUBE, PLATE TYPE & AIR COOLER EXCHANGER AIR COOLER EXCHANGER CONSTRUCTION DETAILS

6

HEP6

TYPICAL PLOT PLAN OF SEVERAL EXCHANGER APPLICATION

7

HEP7

8

HEP8

ARRANGEMENT OF EXCHANGERS AND OPERATING SPACE BETWEEN PIPING SAMPLE EXCHANGER ORIENTATION

9

HEP9

10

HEP10

SAMPLE SINGLE & PAIRED EXCHANGER/PARALLEL & SERIES INSTALLATIONS STACKED EXCHANGER INSTALLATION

11

HEP11

SAMPLE STRUCTURE MOUNTED EXCHANGER INSTALLATION

12

HEP12

13

HEP13

TOWER SUPPORTED VERTICAL INSTALLATION & TUBE BUNDLE MAINTENANCE STRUCTURE SUPPORTED VERTICAL INSTALLATION

14

HEP14

15

HEP15

CONTROL AND OPERATOR ACCESS FOR A PLATE TYPE HEAT EXCHANGER TYPICAL COLUMN SUPPORTED AIR COOLER ARRANGEMENT

16

HEP16

TYPICAL FIXED PLATFORM AIR COOLER ARRANGEMENT

17

HEP17

ALLOWABLE NOZZLE CONFIGURATIONS

18

HEP18

EFFECT OF ELBOW NOZZLES ON STACKED EXCHANGERS

19

HEP19

ALTERNATE AIR COOLER NOZZLE CONFIGURATIONS

20

HEP20

PIPING TO NOZZLES OF HEAT EXCHANGERS

21

HEP21

22

HEP22

23

HEP23

ALTERNATE ARRANGEMENTS FOR LOCATING EXCHANGER NOZZLES PIPING ARRANGEMENT FOR HORIZONTAL SHELL AND TUBE EXCHANGERS SUPPORTS FOR PIPING ARRANGEMENT

24

HEP24

25

HEP25

PIPING ARRANGEMENT FOR UNDERGROUND COOLING WATER SYSTEM PIPING ARRANGEMENT FOR STEAM AND CONDENSATE SYSTEM


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HEP26

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PIPING ARRANGEMENT FOR HORIZONTAL AND VERTICAL REBOILER

DESCRIPTION

27

HEP27

28

HEP28

PIPING ARRANGEMENT FOR HIGH TEMPERATURE & PRESSURE FEED EXCHANGERS PIPING ARRANGEMENT FOR FEED EXCHANGERS

29

HEP29

PIPING ARRANGEMENT FOR SPIRAL EXCHANGERS

30

HEP30

PIPING ARRANGEMENT FOR PLATE EXCHANGERS

31

HEP31

OVERHEAD PIPING ARRANGEMENT FOR A CONDENSING AIR COOLER


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1.0

INTRODUCTION Heat Exchangers are widely used equipments in the chemical, petrochemical and refinery type of plant. The control of heat within a plant operation is done by direct heat application in a furnace, or by heat exchange in a shell and tube exchanger / plate heat exchanger. Types of heat exchanger may be Shell and Tube, Aircooled (Fin-Fan), Plate type or Coil type(spiral).

1.1

Various process duties of heat exchanger have an effect on the layout aspects viz. a. Exchange of sensible heat between two process fluids. b. Cooling with air or water. c. Chilling with refrigerated liquid. d. Heating with steam or hot water. e. Condense by water or a cold process stream. f. Vapourising by steam (e.g. column reboiler) or any heat transfer liquid.

1.2

-

Fixed tube exchangers are used when the temperature differences between shell side and tube side fluid are small.

-

Floating head or U-type exchangers are used where there is a significant temperature difference.

-

Kettle -type reboilers are used for evaporation in case of limiting pressure drop, otherwise vertical reboilers are used for evaporation.

-

Plate heat exchangers are generally used in low-pressure, low temperature applications. The plate exchanger occupies less space than shell and tube exchanger for equivalent heat exchanger surface.

-

Aircoolers are used for overhead condensers of column and consist of fin-tube bundles with a header box to each end, having inlet on top of header-box at one end and outlet on bottom of header box at the other end.

1.3

Various types of heat exchangers with application are illustrated in the schematic flow diagram HEP1. The various parameters applied to heat exchangers are illustrated in Fig., HEP2, HEP3, HEP4 & HEP5.

1.4

For single pass arrangement of air-cooler exchangers, inlet nozzles are mounted on the top of the header box and the outlet nozzles are located at the opposite end and mounted on the bottom of the header box. For double pass arrangement, the inlet and outlet nozzles are located at the same end.

2.0

LOCATION Exchangers should be located close to the major equipment with which it is associated in PFD / P&ID. Reboilers are placed next to their respective towers and condensers are placed over reflux drums. Exchangers between two distant pieces of process equipment should be placed at optimal points in relationship to piperacks. Most exchangers are to be located at grade level with elevations to have a clearance of 1m above Finished Ground Level (FGL). Elevated exchangers may be necessary to fulfill the NPSH requirement of a downstream centrifugal pump. In case of large numbers of heat exchangers, they are grouped in one or more category to save pipe work, structural work, provision of lifting and maintenance facilities, platform requirement etc. Paired or grouped exchnagers shall be spaced to allow minimum 450mm preferrably 600mm between the outside of adjacent channel or bonnet flanges to facilitate access to flange bolts during


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maintenance. Adequate space shall be provided on either side of paired exchanger and at both ends of grouped exchanger for control and operator access as illustrated in Fig.HEP9. Groups of exchangers should be generally located by the alignment of channel nozzles in a vertical plane so as to present an aesthetic appearance. The support saddle with oblong holes for provision of thermal expansion are normally located on the saddle farthest from the channel end but the final location depends on the plant layout and the stress analysis of the connected piping. Exchanger piping should be as direct and simple as possible by considering alternatives such as arranging exchangers side by side / stacking them for reversing flows. Exchangers are sometimes mounted on structures, process columns and other equipment. Special arrangements for maintenance and tube cleaning should be provided in such cases.

3.0

ACCESS FOR OPERATION & MAINTENANCE Internals of heat exchanger require periodic cleaning and repair. It is important that exchangers and the surrounding piping are arranged to facilitate access to the internal parts.

3.1

Horizontal clearance of at least 900mm should be left between exchangers flange to flange or exchanger flanges to piping. Where space is limited, clearance may be reduced between alternate exchangers but in no case clearance over insulation between channel flanges shall be less than 600mm.

3.2

The channel ends of exchangers should face the local access road for tube bundle removal and the shell cover should face the piperack. Pulled out bundles should not extend over main access road. A typical exchanger arrangement with clearance for access, operation and maintenance is shown in Fig.HEP7. Access for tube bundle removal is usually 500mm more than the bundle length.

3.3

Mobile equipment should be used for handling tube bundles and covers at grade level. Expensive built-in facilities e.g. lifting beams, monorails to be kept minimum.

3.4

The use of tube-bundle extractor eliminates the need for permanent tube bundle removal structures. These mechanisms weigh around seven tons and are capable of pull forces about 500,000lbs. The tube-bundle is held in position by crane and balanced by the extractor's leveling cradle and pulled out of its shell with pull rod attachments that use hydraulic force.

3.5

For air-cooled exchangers, platform arrangements must suit maintenance access requirements. Considerations must be given to fin-tube bundle removal, tube rodding out at header boxes, motor and fan access.

3.6

Provision of easily removable spool pieces, flanged elbows, break flanges or short pipe runs will be helpful for maintenance of exchangers.

3.7

Illustrations for exchanger location in unit plot plan alongwith the provisions of operating and maintenance space, accessibility are shown thru' Fig.HEP6, HEP7, HEP8, HEP9, HEP10, HEP11, HEP12, HEP13, HEP14, HEP15 & HEP16 as typical cases.


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KEY WORDS Shell and Tube Fixed head Floating head Channel End Bonnet End Channel Flange Tube bundle removal Air Cooler (Fin-Fan) Header Box Nozzle loads Platform Support Structure Stacked heat exchanger Elbow nozzle. Monorail Maintenance accessway

Plate type heat exchanger Inlet port Back flashing Plates and gaskets Removal of individual plate

5.0

"STEPS TO DO HEAT EXCHANGER PIPING"

Step 1 :

Collect the mech. spec. of the heat exchanger.

Step 2 :

Study the P&ID around the heat exchanger and identify the relationship with the connected equipment viz. column or reactor.

Step 3 :

Note the special process (functional) requirement along with the specific arrangement details with respect to level or height difference from other related equipment like pumps.

Step 4 :

Study the nozzle schedule, its position on the equipment and verify with P&ID.

Step 5 :

Make a sketch for the relative location and level. Find out the tube cleaning space in case shell & tube Heat Exchanger as well as the maintenance space of tube bundle length.

Step 6 :

Locate the control valve stations both for shell side and tube side fluids.

Step 7 :

Decide the flanged joints location for replacement of Heat Exchanger / maintenance facility.

Step 8 :

Check, in general, that cooled streams flow downwards and heated streams flow upwards. This arrangement is mandatory when there is a change of phase, desirable when the streams are liquid but not important when the streams are gas or vapour or there is no super heating, super cooling.


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Step 9 :

Check, piping should not foul with exchanger removal either in the horizontal direction for bundle-pulling nor in the vertical for whole exchanger removal.

Step 10:

Check, locally mounted PI, TI on equipment or process lines, sight glasses and level indicators are visible from access aisles and valves are accessible from the aisles.

Step 11:

Mark the supports / support arrangement on the piping study.

Step 12:

Ensure accessibility / operation facility for all valves as well as the clearance kept are not less than the recommended minimum requirement.

6.0

HEAT EXCHANGER PIPING

6.1

SHELL & TUBE After all the required information has been collected for the piping design of a heat exchanger, the first step is to outline clearance and working space in front and around both ends of the exchanger. These working spaces should be kept clear of any piping and accessories to facilitate channel, shell-cover and tube-bundle removal as well as maintenance and cleaning. The free space at the side of horizontal shell can be used for placement of control stations. The piping is elevated from grade to have a clearance of 300mm above the grade level. The piping connected to channel head nozzles should be furnished with break flanges to facilitate the removal of the channel head. Steam lines connecting to a header in the yard can be arranged on either side of the exchanger centerline without increasing the pipe length. Cooling-water lines, if under ground, should run right under the lined-up channel nozzles of all coolers. Access to valve hand wheels and instruments will influence the piping arrangement around heat exchangers. Valve handwheels should be accessible from grade and from a convenient accessway. These accessways should be used for arranging manifolds, control valves and instruments. Fig. HEP 20, HEP21, HEP22, HEP23, HEP24, HEP25, HEP26, HEP27 & HEP28 illustrates some typical piping arrangement around shell & tube exchangers.

6.2

PLATE & SPIRAL EXCHANGERS Piping at spiral and plate exchangers is also arranged to allow opening of covers and removal of plates. Controls at the spiral exchanger are located on the ends of the unit, clear of the cover plate swing area, piping attachment to cover plate nozzles of spiral exchanger will have break flanges. Controls for plate exchanger are located at the front and one side of the exchanger. The piping is elevated to have clearance from grade as well as convenience for operation of valves. Fig.HEP29 and HEP30 illustrates the typical piping arrangements around spiral & plate exchangers.


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AIR COOLERS Piping for air coolers are not routed over tube banks or fans and should be kept clear of the designated space for motor maintenance. Fig.HEP31 illustrates the typical piping arrangements around air coolers.

TRAINING MANUAL - PIPING

DOC NO. : 29040-PI-UPS-1004

PIPING STUDY HEAT EXCHANGER

Uhde India Limited

Rev.

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Page

: 1 OF 1 DWG. NO. : HEP1

EXCHANGER APPLICATION SHOWN ON A PROCESS FLOW DIAGRAM

CONDENSER (AIR COOLER)

AIR

HEATER

STEAM WATER

SHELL & TUBE

COOLER

SHELL & TUBE EXCHANGER PROCESS

SHELL & TUBE REBOILER STEAM

CHILLER

SHELL & TUBE

KETTLE REFRIGERANT

REFRIGERATION PACKAGE

TRAINING MANUAL - PIPING PIPING STUDY HEAT EXCHANGER

Uhde India Limited

DOC NO. : 29040-PI-UPS-1004 Rev.

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SHELL AND TUBE HEAT EXCHANGER WITH REMOVABLE TUBE BUNDLE

PACKED FLOATING TUBE-SHEET FLOATING

CHANNEL COVER CHANNEL HEAD NOZZLE 1ST FLUID ENTERS (COLD)

HEAD RING

2ND FLUID LEAVES (WARM)

SHELL NOZZLE

RELIEF VALVE CONNECTION

REMOVABLE TUBE BUNDLE

SHELL NOZZLE

2ND FLUID ENTERS (HOT)

SHELL VENT

REAR HEAD DRAIN

DRAIN DRAIN 1ST FLUID LEAVES HEAD NOZZLE

SADDLE

BAFFLE(TYP) SADDLE


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SAMPLE OF TUBE AND SHELL EXCHANGER PASSES

HORIZONTAL BAFFLE IN

VERTICAL BAFFLES

OUT

OUT

IN

TUBE SIDE

SHELL SIDE

KEY ITEMS FOR A TYPICAL SHELL AND TUBE EXCHANGER

CHANNEL HEAD HORIZONTAL BAFFLE TUBE NOZZLE

TUBE SIDE HEAD COVER

FIXED TUBE SHEET

TUBE BUNDLE

SHELL SIDE

SHELL

VERTICAL BAFFLES

SUPPORT SADDLE (TYP)

SHELL COVER

SHELL NOZZLE

FLOATING HEAD COVER


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SHELL AND TUBE EXCHANGER

PLATE EXCHANGER

AIR COOLER EXCHANGER


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AIR COOLER EXCHANGER CONSTRUCTION DETAILS

SUPPORT STEEL

HEADER BOX

TUBE BANK

INLET NOZZLE

MOTOR

MOTOR

FAN HOUSING

OUTLET NOZZLE

HEADER BOX

MOTOR ACCESS PLATFORM

TUBE BANK

SUPPORT CHANNEL

SUPPORT BEAM

INLET NOZZLE


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TYPICAL PLOT PLAN OF SEVERAL EXCHANGER APPLICATION

C COLUMN L PLATE EXCHANGER

HIGH PRESSURE EXCHANGERS HORIZONTAL REBOILER

AIR COOLED CONDENSERS

C L COLUMN

C L COLUMN DOUBLE PIPE EXCHANGER

TRIM CONDENSERS

KETTLE TYPE EXCHANGER C L COLUMN

VERTICAL REBOILER C COLUMN L

SPIRAL EXCHANGERS

PRODUCT COOLERS


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(a)

ARRANGEMENT OF EXCHANGERS WITH 2'-6" OPERATING SPACE BETWEEN PIPING

2" MIN. CLEARANCE

2'-6" (750)

PIPERACK

2" MIN. SPACE FOR PULLING TUBES

ACCESS

2'-6" (750)

6' (1800)

(0.8)(L)FEET

8FEET (2500)

ARRANGEMENT OF EXCHANGERS WITH 2'-0" MAINTENANCE SPACE BETWEEN PAIRED UNITS AND 2'-6"OPERATING SPACE BETWEEN PIPING.

2' (600)

(b)

L FEET

CLEARANCE

2'-6" (750) 2" MIN.

SPACE FOR PULLING TUBES

ACCESS

2'

PIPERACK

2" MIN.

6' (1800)

L FEET

(0.8)(L)FEET

8FEET (2500)

(1) SHOW OUTLINES OF EXCHANGER SUPPORTS OR FOUNDATIONS BEFORE ARRANGING PIPING. (2) ADD THICKNESS OF INSULATION FOR EXCHANGER SHELLS AND CONNECTED PIPING TO CLEARANCE AS SHOWN. (3) PROVIDE ADDITIONAL CLEARANCE TO THE 2'-6"(750) OPERATING SPACE IF VALVE HANDWHEELS AND VALVE STEMS, etc., PROTRUDE, DEPENDING ON PIPING ARRANGEMENT.


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SAMPLE EXCHANGER ORIENTATION

CHANNEL END

C PIPE RACK COLUMNS L

DAVIT

TUBE BUNDLE REMOVAL AREA

C TOWER L

- CHANNEL END TO FACE MAINTENANCE ACCESS WAY FOR TUBE BUNDLE REMOVAL. - PROVISION OF ADEQUATE SPACE FOR BONNET REMOVAL.

AUXILIARY ROAD OR MAINTENANCE ACCESS WAY

BONNET REMOVAL AREA


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SAMPLE SINGLE AND PAIRED EXCHANGER TOWER

DRUM CONTROL VALVE (TYP.)

OPERATOR ACCESS

18"/.450 MINIMUM

OPERATOR ACCESS

SINGLE EXCHANGER

OPERATOR ACCESS

PAIRED EXCHANGERS

PARALLEL EXCHANGER INSTALLATIONS

CONTROL VALVE (TYP.)

OPERATOR ACCESS

OPERATOR ACCESS

SERIES EXCHANGER INSTALLATIONS CONTROL VALVE (TYP.)

OPERATOR ACCESS

OPERATOR ACCESS


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STACKED EXCHANGER INSTALLATION

ELBOW NOZZLE 12'-0"/3600 (MAXIMUM WITHOUT PLATFORM)

SPACE FRAME OPERATOR ACCESS AREA

SAME SERVICE

DISSIMILAR SERVICE

SAME SERVICE


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SAMPLE STRUCTURE MOUNTED EXCHANGER INSTALLATION

4'-0"/1.200 MIN.(TYP.)

TUBE END


18"/.450 MIN.

AUXILIARY ROAD OR MAINTENANCE ACCESS WAY


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TOWER SUPPORTED VERTICAL INSTALLATION

TUBE BUNDLE REMOVAL AREA ALTERNATIVE CHANNEL DESIGN

TOWER

LUG & SPRING 2'/600 TO 5'/1500

PLATFORM REBOILER

12'-0"/ 3600 MAXIMUM WITHOUT PLATFORM

3'-0"/ 900 MIN.

HITCH POINTS FOR COVER REMOVAL

COVER REMOVAL AREA

TUBE BUNDLE MAINTENANCE VESSEL NOZZLE

LUG & SPRING 1"/.025 GAP

PLATFORM SUPPORT STEEL

GUIDE

ADD 1"/.025 SHIM

2

1

REMOVE CHANNEL SECTION

UN-BOLT

3

EXTRACT TUBE-BUNDLE

4


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STRUCTURE SUPPORTED VERTICAL INSTALLATION


6'-0"/1800 (MAXIMUM)

MINIMUM 4'-0"/1200 (TYP.)

LUGS

PLATFORM

18"/450 MINIMUM

12'-0"/3600 MAXIMUM WITHOUT PLATFORM 3'-0"/900 MINIMUM


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CONTROL AND OPERATOR ACCESS FOR A PLATE TYPE HEAT EXCHANGER

PLATE REMOVAL AREA

OPERATOR ACCESS

CONTROL ASSY. SPACE (TYP.)

OPERATOR ACCESS

C PIPE RACK COLUMN L


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TYPICAL COLUMN-SUPPORTED AIR COOLER ARRANGEMENT

MAINTENANCE PLATFORM

(TYP.)

MOTOR

7'-0"/2100 MIN.

HEADER BOX PLATFORM

(TYP.)

MOTOR

INDUCED DRAFT AIR COOLER

OPERATOR ACCESS

LADDER

PIPE RACK

ADDITIONAL PLATFORM IF LADDER RUN IS LONGER


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TYPICAL FIXED PLATFORM AIR COOLER ARRANGEMENT

LADDER TO MAINTENANCE PLATFORM (TYP.)

HEADER BOX PLATFORM (TYP.)

LADDER TO GRADE (TYP.)

MOTOR (TYP.)

PIPE RACK COLUMNS

MAINTENANCE PLATFORM

AIR COOLER SUPPORT BEAM


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ALLOWABLE NOZZLE CONFIGURATIONS

SINGLE PASS SHELL

DOUBLE PASS SHELL

SINGLE SPLIT FLOW SHELL

DOUBLE SPLIT FLOW SHELL

SINGLE PASS SHELL

DOUBLE PASS SHELL

KETTLE TYPE REBOILER

SINGLE PASS SHELL


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REDUCTION IN SPACE

EFFECT OF ELBOW NOZZLES ON STACKED EXCHANGERS

REDUCED SPACE

ELBOW NOZZLES

ALTERNATIVE À'

ALTERNATIVE `B'


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ALTERNATE AIR COOLER NOZZLE CONFIGURATIONS

SINGLE PASS OUTLET NOZZLE LOCATION

INLET NOZZLE LOCATION

C TOWER L

AIR COOLERS

DOUBLE PASS OUTLET LOCATION

REFLUX DRUM GRAVITY FLOW

ALTERNATE LOCATION


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PIPING TO NOZZLES OF HEAT EXCHANGERS

TO ALLOW LIFTING OF REAR HEAD FOR MAINTENANCE, PIPE MAY BE OFF SET AS SHOWN, OR A SHORT SPOOL CAN BE PROVIDED.

12"MIN. FOR WRENCH ACCESS REMOVABLE SPOOL

LINES SUPPORTED UNDER AN EXCHANGER ARE SOMETIMES INSUFFICIENTLY FLEXIBLE. THE FLANGED JOINT AT THE HEAD NOZZLE TO BE PARTED AFTER REMOVAL OF BOLTS. IF THIS IS LIKELY A SHORT REMOVABLE SPOOL TO THE HEAD NOZZLE SHOULD BE PROVIDED.

CL EXCHANGER

ALLOW SPACE FOR PULLING TUBES OBLIQUE OFFSETS IN PIPING SIMILIAR TO THOSE SHOWN. ALLOW EXCHANGERS TO BE PLACED CLOSER.

90°ELBOW NOZZLE

CONSIDER REQUEST TO VENDOR DIFFERENT NOZZLE TYPES, ORIENTATIONS AND LOCATION TO OBTAIN THE BEST PLANT ARRANGEMENT.

TUBE BUNDLE LENGTH+450MM 90°ELBOW NOZZLE


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ALTERNATE ARRANGEMENTS FOR LOCATING EXCHANGER NOZZLES

ALTERNATIVE À'

ALTERNATIVE `B'


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450

PIPING ARRANGEMENT FOR HORIZONTAL SHELL AND TUBE EXCHANGERS

450

OPERATOR ACCESS ACCESS TO FLANGE BOLTS (ALL AROUND) MAINTENANCE ACCESS

600 TO 900

CONTROL STATIONS

C PIPE RACK L COLUMN

MAINTENANCE ACCESS

TUBE BUNDLE REMOVAL AREA= TUBE LENGTH + 450 CHECK CLEARANCE AT SUPPORT ACCESS TO VALVES & INSTRUMENTS

CL TOWER

PIPE RACK

RUN PIPING AT COMMON ELEVATION TO SUIT PIPE RACK ELEVATIONS

MAINTAIN CLEARANCE AT DAVIT

BREAK FLANGES

MAINTENANCE ACCESS

MAINTENANCE ACCESS ALTERNATE LOCATION FOR CONTROL STATIONS

OPERATOR ACCESS

CONTROL STATIONS


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SUPPORTS FOR PIPING ARRANGEMENT

INTERMEDIATE SUPPORT REQUIRED FOR PIPING THAT IS OVER SPANNED BETWEEN PIPE RACK AND EXCHANGERS

DUMMY LEG/ TRUNNION

ATTACH STEEL FRAME TO CONCRETE SUPPORT


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PIPING ARRANGEMENT FOR UNDERGROUND COOLING WATER SYSTEM

THI

USE SPOOL PIECE FOR BUTTERFLY VALVES

COOLING WATER SUPPLY COOLING WATER RETURN CHECK CLEARANCE WITH FOUNDATIONS

ANTIFREEZE BYPASS


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PIPING ARRANGEMENT FOR STEAM AND CONDENSATE SYSTEM

CONDENSATE CONTROL VALVE

LEVEL GAUGE

TRUNNION SUPPORT

CONDENSATE POT

STEAM CONTROL VALVE

ELEVATION OF CONDENSATE POT SET BY PROCESS CONDITIONS


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PIPING ARRANGEMENT FOR HORIZONTAL REBOILER

SYMMETRICAL PIPING

PIPING ARRANGEMENT FOR VERTICAL REBOILER

LUGS

INDEPENDENT STRUCTURE SUPPORTING REBOILER


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PIPING ARRANGEMENT FOR HIGH TEMPERATURE. HIGH PRESSURE FEED EXCHANGERS

HIGH TEMPERATURE, HIGH PRESSURE ALLOY PIPING

PROVIDE LOOP IN PIPING FOR FLEXIBILITY

ALTERNATIVE À'

PROVIDE SPRING SUPPORT AT CENTER EXCHANGER CHANNEL END ONLY

ALTERNATIVE `B' COST EFFECTIVE


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PIPING ARRANGEMENT FOR FEED EXCHANGERS

LOCATE PIPING BENEATH PLATFORM FOR EASE OF SUPPORT

COOLING WATER


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PIPING ARRANGEMENT FOR SPIRAL EXCHANGERS

OPERATOR ACCESS

CONTROL VALVE

COVER PLATE SWING AREA REMOVABLE SPOOL (TYP.)

PIPE RACK COLUMN

CONTROL VALVE


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PIPING ARRANGEMENT FOR PLATE TYPE EXCHANGERS

PLATE REMOVAL AREA

OPERATOR ACCESS

CONTROL VALVE (TYP.)

C L PIPE RACK COLUMN

CONTROL VALVES

PLAN

ELEVATION


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OVERHEAD PIPING ARRANGEMENTS FOR A CONDENSING AIR COOLER

AIR COOLER

COST EFFECTIVE ALTERNATE ROUTING, IF PIPING IS FLEXIBLE AND CAN SPAN DISTANCE WITHOUT INTERMEDIATE SUPPORT.

EXTENDED AIR COOLER SUPPORT STEEL TO SUPPORT OVERHEAD LINE. C TOWER L

AIR COOLER

C TOWER L FOR FLEXIBILITY, THE AIR COOLER CAN BE POSITIONED WITH THE INLET NOZZLES ON THE FAR CENTERLINES OF THE PIPE RACK COLUMNS. THE AIR COOLER SECTIONS SHOULD BE SEGREGATED AND THE STEEL EXTENDED TO SUPPORT THE OVERHEAD PIPING.

Heat Exchanger Piping

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