piping design procedure

7/29/2019 Piping Design Procedure

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B 14/10/02 Issued for IDC M.ANGOT C.ALLERON H.BOULAIS

A 23/09/2002 First issue M.ANGOT C.ALLERON H.BOULAIS

Rev. Date Description of revision Issued Checked Approved

DD-MM-YY

Customer:

ESSO EXPLORATION AND PRODUCTION NIGERIA LIMITED

Contractor:

BOS

Subcontractor:

ERHA DEVELOPMENT PROJECT EPC1 FPSO

Customer's contract No.:

C 51562

Product: Type of document:

PROCEDUREContractor's document identification: Other identification:

Codes : Rev.

T 1 2 2 0 1 0 1 0 0 L Z P 0 5 . 8 1 8 0 0 1 1 B

Path\File name\Initials:

Document title:

PIPING DESIGN PROCEDURE

Customer's document No.: Page:


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ERHA DEVELOPMENT PROJECT EPC1 FPSO 14/10/02

PIPING DESIGN PROCEDURE REVISION:B

T122010-100-LZP 05.81 80011 PAGE: 2/42

B 1 / 41N G 0 1 - B O E - P - L P - 01 0 0 - 8 0 0 1

Path\File name\Initials:


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CHANGE RECORD PAGE

REVISION DESCRIPTION OF REVISION

A First issue

B Issued for IDC


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REVISION TABLE

PAGE REVISION PAGE REVISION APPENDIX REVISION

A A

1 X 28 X A

2 X 27 X B

3 X 28 X C

4 X 29 X D

5 X 30 X E

6 X 31 X F

7 X 32 X G

8 X 33 X H

9 X 34 X I

10 X 35 X J

11 X 36 X K

12 X 37 X L

13 X 38 X M

14 X 39 X

15 X 40 X

16 X 41 X

17 X 42

18 X 43

19 X 44

20 X 45

21 X 46

22 X 47

23 X 48

24 X 49

25 X 50


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TABLE OF CONTENTS

1. PURPOSE.....................................................................................................................6

2. UNIT OF MEASUREMENT...........................................................................................6

3. TOPSIDES ARRANGEMENT........................................................................................6

3.1. Pipe racks.............................................................................................................6

3.2. Modules................................................................................................................10

4. PIPING ARRANGEMENT.............................................................................................12

4.1. General.................................................................................................................12

4.2. Piping Connections:..............................................................................................13

5. VALVES ARRANGEMENT ...........................................................................................14

6. HEAT EXCHANGERS...................................................................................................14

7. INSTRUMENT PIPING..................................................................................................14

8. RELIEF VALVES...........................................................................................................14

9. PUMPS.........................................................................................................................15

10. STRAINERS................................................................................................................15

11. PACKAGES.................................................................................................................16

12. EQUIPMENT ACCESS AND REMOVAL MATERIALS HANDLING REPORTS..........16

12.1. General maintenance considerations..................................................................16

12.2. Lifting points........................................................................................................17

12.3. Chains hoists and cable pullers...........................................................................17

12.4. Hydraulic boom hoists.........................................................................................17

12.5. Vertical Access...................................................................................................17

13. INSULATION...............................................................................................................37

13.1. Insulation Thickness for personnel protection.....................................................37

13.2. Hot insulation thickness requirements.................................................................3814. PIPING SPACING TABLES........................................................................................39

PIPING SPACING TABLES.............................................................................................40

15. REFERENCE DOCUMENTS......................................................................................41


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1. PURPOSE.

This procedure define the piping layout rules following standards, specifications,procedures and usual practices for the details engineering studies.This procedure must be read jointly with :PIPING SYSTEM DESIGN EMDC-EDE-G-LS-0612.2001

2. UNIT OF MEASUREMENT

See EMDC-BRE-G-ZS-0115.1001.Main units used for piping :International system.- Length millimetres: mm- Area m2- Weigh - kilogram : kg

- Time - second : s- Force - Newton.: N- Pressure Bar ( bara-bar absolute; barg-bar gauge )- Angle degree : deg.

3. TOPSIDES ARRANGEMENT.

Topsides level EL106000.Deck hull - RGF Datum Level : EL100000 ( Reference DOC T122010-100-ZZG-05.81-80011).See figure 2.0

3.1. Pipe racks.

3.1.1. 5 levels are defined.

Level 1 TOS EL 111000




Level 5 TOS EL 123000Level 1 to 4 are provided for the pipe routing.Level 5 is provided for equipment (air coolers, etc) and cables trays, (electrical and maininstrumentation.)

3.1.2. Pipe rack width from files axis is 9m.

3.1.3. Intermediate levels.

Intermediate levels are installed on files of pipe rack to support pipes going out the piperack into the modules.4 intermediate levels are defined.

TOS EL112200

TOS EL115200

TOS EL118200

TOS EL121200

3.1.4. Access.

Forklift truck.


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North/south piperacks to have adequate clearance underneath to allow Forklift truck tooperate between North end of the pipe rack and South workshop.Allocated clearance under piperacks:

Width : 4m. Hight : 4m.

Walkways.Walkways are located on level 5 of the pipe rack to access on equipments and main cablestrays.


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FIGURE 2.A


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FIGURE 2.B


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3.2. Modules.

See figures 2.A &2.B..

3.2.1. Modules decks levels.

Modules levels on intermediate and upper decks are defined in the space allowablebetween piperacks intermediate levels and bottom of steel structure beams of piperacklevels 1 to 4.

4 decks are defined :

Topsides decks

Intermediate decks

Mezzanine deck (if any).

Upper decks.

Levels decks on modules :See figure 2A.

3.2.2. Modules layout

Modules layout design has to be defined following these steps :

Equipment and packages layout position.

Safety escape route. (in accordance with Safety requirement ).

Platform access to equipment.

Laydown area and removal material.

Piping routing/flexibility.

Secondary steel structure to support piping layers.

Piping supports.

3.2.3. Module typical arrangement.

Typical arrangement between two decks in modules.

Top of the deck.- Cables trays area :

Cables trays are installed 0.5 m under the main steel structure.- Piping area.

2 levels are installed :1. First level of piping layer is installed at 1,5 m under the main steel

structure.

2. Second level of piping layer is installed 2,5 m under the main steelstructure.

Bottom of the deck.- Piping area.

BOP or BOS (bottom of shoe) for piping routing will be located at 600mm abovedecks in modules.(See Fig 2.0).

Arrangement between decks and piperacks.

Hoppers, 2m width, are opened through each level of deck for vertical piping linesrouting between piperacks and modules. These hoppers are used also for cables trayscoming from top level of the piperacks to LER ( local electrical room ) located on

modules. Cables trays are installed along vertical beams of the piperacks.

3.2.4. Arrangement under topsides.


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Typical lines :Drains lines.

Slope : 1/100 from AFT to FORE. (10mm/m).

Slope : 1/33 from FORE to AFT (30mm/m).


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4. PIPING ARRANGEMENT.

4.1. General.

All piping shall be arranged neatly and simply and whenever possible shall be supportedfrom below.

Sufficient clearances shall be provided for operating access, maintenance and removal ofparts and instruments, equipment and machinery.

Horizontal piping shall run in perpendicular directions and parallel with main axes of themodule and with pipe bottom at different elevations. Changes in directions and elevationsshall normally be at 90-degree angles.

Minimum vertical clearances between top of floor plate and the bottom of the piping,insulation, or support beam (whichever controls) are as follows:Location Minimum Clearance

Above floor plate 7 ft., 6 in.(3.7m)

Valves in horizontal lines shall be installed with the stems oriented as follows (in order ofpreference):

Vertical upward

Horizontal (required for chain operation or to prevent stem leakage running into

insulation) Upward at 45 degrees

Liquid traps shall not be allowed in flare relief piping or in other low pressure low gas velocityapplications.Drains lines and flare lines.

1. Slope : 1/100 from AFT to FORE. (10mm/m).2. Slope : 1/33 from FORE to AFT. (30mm/m).

Vent or drain valve shall be furnished for pressure release between two block valves, or ablock and a check valve that are not adjacent.

Threaded connections to machinery shall be minimized. Screwed piping shall beassembled with sufficient unions to allow disassembly for maintenance. No unions shall beinstalled between a vessel and the first block valve. Screwed connections shall beminimized between equipment and the first block valve.

Piping shall be supported so that equipment may be removed without the need for temporarypiping support, and it shall be anchored or supported to eliminate excessive stress onequipment flanges.

All control valves and other in-line instruments shall be located in piping where they arereadily accessible for operation and maintenance.


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Drain and vent valves shall be installed to facilitate hydrotesting and purging.

Dead end stubs are prohibited.

For vent and drain valves in vibrating service, and when available for the line classspecifications, use extended body gate valves in lieu of nipple and valve. Brace withgussets in 2 places, 90o apart. Gussets shall be made from 1" wide by 1/4" thick plate.

A drain valve shall be installed on each header and on any lead lines that create liquidtraps.

4.2. Piping Connections:

Couplings and nozzles directly attached to equipment are part of the equipment and are

covered in the equipment specifications. This section covers piping connections, and pipingfrom the equipment coupling outward.

All steam, instrument air, and fuel gas take-off connections shall be from the top of thesupply header.

When possible, nipples directly connected to machinery or other location subject tovibration should be avoided. Use of heavy wall API 602 (with bolted bonnets) male-femalevalves should be considered as an alternative. When unavoidable, use XXS pipe nipples

between the valve and the machine and provide a gusset connection in 2 planes 90 apart,of 1" x 1/4" plate.

All thread or close nipples shall not be used. A close nipple is defined as one whoseunthreaded length is less than the O.D of the pipe.

Piping 1-1/2 and smaller for hydrocarbon or utility service in CL 150 through 1500 orGlycol/Hot Oil service shall be socketweld. All piping in ASME CL 2500 and all API classesshall be buttweld.

Piping 2 and larger shall be of buttweld and flanged construction. The number of flangesshould be kept to a minimum and where practical welded connections shall be used.

Pipe unions between process vessels or equipment and the first block valve areprohibited.


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5. VALVES ARRANGEMENT

Chain operator: location and orientation of valves in the line shall be such as to permit themto be readily operable and maintainable. If the center of a valve handwheel, or the stem of afrequently used wrench operated plug valve, is more than 7 ft.(2.1m) above grade orplatform, the valve shall have a remote operating device (e.g., chainwheel, chain wrench, orextension stem). Integral chain wheels are preferred; however, when ordered separately,the clamp-on wheels with U-bolts shall be used.

If valve is frequently operated and located 6 to 7 feet (1.8m to 2.1m) above grade orplatform, a small access platform shall be provided.

The impact type chain wheel complete with chain guide shall be used when high closing

forces are required.

Valve handling.Provide clearance lifting area above heavy valves for handling.By pass on control valves manifold will be designed outside of vertical axis of valves.

6. HEAT EXCHANGERS

Exchangers referred to in this specification include all shell and tube, double pipe, plate fintype and air cooled heat exchangers.

Heat exchanger piping shall be arranged so that channel covers and tube bundles may beremoved without temporary pipe supports or disassembly of the piping.

Multi-unit exchangers shall be arranged and provided with valves so that any one unit orbank can be removed from service for maintenance or repair.

7. INSTRUMENT PIPING

Each instrument process sensing connection shall have a valve located as close to thevessel or line connection as possible.Instruments installation are defined on piping typical arrangement book

8. RELIEF VALVES

Discharge from relief valves on liquid or heavier than air vapors and toxic gases shall belocated so that they can be piped to a closed flare header and arranged to dischargedownwards into the header with all piping sloped to avoid liquid traps.

Relief valves vented to the atmosphere shall have vent stacks extended vertically aminimum of one foot (305mm) above the top of adjacent vessels, building eave, piping oroperating height, whichever is highest.

All relief valves with open stacks shall be provided with a drain in the low point of thedischarge piping. Drains on relief valve piping should be piped such that the exhaustthrough the drain hole does not impinge on vessels, piping, other equipment or personnel.


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Thrust generated when relief valves are discharging gas will be taken into account whendesigning piping support.

Relief valves protecting a vessel shall be connected between the vessel inlet and the misteliminator or installed on the inlet piping.

In areas where access is difficult, davits shall be provided for lifting relief valves installedover 6 feet (1.8m) above ground level or weighing over 50 pounds.(23kgs).

Inlet block valves shall be provided for all relief valves (except steam generators). Outletblock valves are required if the relief valve is connected to the flare system. Inlet and outletblock valves are to be full opening.

Where relief valve inlet block valves are provided for equipment isolation, a bleed ring with

a valve shall be provided for testing purposes.

9. PUMPS

Pumps shall be piped to require a minimum number of disconnection to remove the pumpfrom its base or to remove parts from the pump. Piping that must be removed for pumpmaintenance shall be fabricated into flanged spools for easy handling.

All pumps shall be equipped with drain valves installed at the bottomof the manifolds or at a point that permits complete liquid removal.

Temporary basket type start-up strainers shall be installed with the cone point upstream atthe suction to pumps without permanent strainers to prevent entry of trash, scale, dirt, etc.,during initial operations. Provision shall be made for easy screen removal.

Piping must be routed and supported to prevent application of excessive moments andforces to pump connections. Adjustable supports shall be provided and shall be anchoredto the pump base.

Reductions in pump suction line size shall be made with concentric reducers if line isvertical. Reducers in horizontal runs shall be eccentric with the flat side up.

For vent and drain valves in vibrating service, and when available for the line classspecifications, use extended body gate valves in lieu of nipple and valve Brace withgussets in 2 places, 90o apart. Gusset shall be made from 1" wide by 1/4" thick plate.

For centrifugal pumps working parallel piping shall be symmetrical.

10. STRAINERS

This section covers the design, material and installation of temporary and permanentstrainers for the protection of mechanical equipment.

Temporary strainers shall be provided as follows when permanent strainers are not

required:


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In the suction lines of all pumps for protection during the flushing and start-up period of newand repiped units.

Strainers shall be installed between the pump suction flange and the block valve. In ahorizontal section of suction lines to all gas compressors.

Temporary strainers for pumps shall be of the basket type. The open area shall be aminimum of 150% cross-sectional area of the pipe. Screen shall be a minimum of 20x20mesh.

For reciprocating compressors, screen shall be 40x40 mesh, and for Centrifugalcompressors 20 mesh. Both shall be mounted on a conical basket or perforated plate.Strainer open area shall be at least 150% of the compressor inlet opening.

Strainers shall be mounted in an easily removable pipe spool.Crosses, tees, or wye pieces shall be used in centrifugal compressor suction lines to permitremoval and insertion of strainers without any disturbance to suction line piping. Screensmay be 20 mesh.

Tabs shall be provided on temporary strainers to protrude from the holding pipe flanges toindicate the presence of the strainer.

Permanent strainers shall be designed as specified on the equipment data sheet.

All permanent strainers shall be designed for cleaning without removing the strainer body

from the line. Y-types for NPS 1-1/2 and smaller, and bucket types for large volumes.

11. PACKAGES

Packages are located in modules on a datum point with coordonates X,Y,Z.The packages are defined like volume, faces of these volumes are batteries limitconnection with pipe lines in the module. Layout leader has to define the piping faceconnection requested to the supplier.Connection between lines in packages and lines in modules are listed on Package pipingconnection sheet (from equipment department), with the following data :

Nozzle designation.

Nozzle diameter and rating.

Nozzle location X,Y,Z.

12. EQUIPMENT ACCESS AND REMOVAL MATERIALS HANDLING REPORTS.

12.1. General maintenance considerations.

Ensure minimum head clearance above platforms, walkways, and gantrys of at least 2.3m.Provide at least 3.7m width and vertical clearance under overhead pipe runs, cabletrays,etc ..to facilitate access by maintenance equipment.Provide a minimum access width for a corridor route of 760mm besed on a single fullyclothed man gaining access.Provide two exits, doors or kick out panels. Locate these that is possible to get out from

either side of compressor/drivers.For initial layout development , a suitable open perimeter of 0.9m to 1.5m around vesseland heat exchanger footprints should be reserved for instrument, piping access and visualinspection.


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Aisle ways between equipment are designated for maintenance access, and are a minimum

of 1.22m wide to allow passage of a cart or dolly.

12.2. Lifting points

Lifting points to be provided for the connection of temporary lifting equipment above allequipments that contains components weighing over 25kgs (e.g applicable : pump, motor,heat exchangers bundles,pipeline pigs, reliefs valves, control valves, spectacle blinds.)Provide lifting padeyes for component weighing over 68kgs.Provide access to the pumps by over head crane, local permanent hoist, or lifting beamplus portable crane, forlift truck, or trolley.

12.3. Chains hoists and cable pullers.

In general, chains hoists will be of 3 tons or less capacity and "come-a-longs"( tire-fort) will

be of 1 metric ton or less capacity.

12.4. Hydraulic boom hoists.

At least one wheeled hydraulic boom hoist capable of lifting 1350kgs will be provided topermit extended reach into area overhead obstruction.

12.5. Vertical Access

Provide either stairs, ladders, or ramps whenever personnel must abruptly change elevationby more than 305 mm (12 in.).

Selection between stairs, ladders, or ramps is primarily based on the preferred angle ofelevation (see Figure 11-5.1 for guidance). Other factors to consider are the type, direction,and frequency of traffic, clearance required, and applied loading. Note: Ensure localregulatory requirements are met.


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12.5.1. Preferred Structure for Angle of Incline (Adapted from Woodson, Tillman and Tillman 1992)

FIGURE 11.5.1

Where bulky or heavy loads must be carried by hand, ramps or elevators should be provided as a

means of ascent. Ladders should not be chosen since both hands should be free to grasp the

ladder. Ladders and stairs should not be used when hand carrying of bulky loads or loads in excess

of 13 kg (29 lb.) are required.


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12.5.2.Stairs

Ensure stair dimensions are in accordance with Figure 11.5.2. Long flights of stairs shouldbe avoided. Provide landings every 10 to 12 treads and at every floor. Treads should beopen unless screens or kickplates are required to protect personnel or equipment under thestairs.

Recommended Stair Dimensions (Reprinted, with permission, from the Annual Book ofASTM Standards, copyright American Society for Testing and Materials, 100 Barr HarborDrive, West Conshohock, PA 19428-2959)

FIGURE 11.5.2


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12.5.3.Ladders

Ensure stair ladder dimensions (between 50 and 75) are in accordance with Figure 11.5.3and are equipped with flat treads and hand rails.

Stair Ladder Dimensions (Reprinted, with permission, from the Annual Book of ASTMStandards, copyright American Society for Testing and Materials, 100 Barr Harbor Drive,West Conshohock, PA 19428-2959)

FIGURE 11.5.3

*Whenever the distance D is less than 74 in. (1880 mm) the overhead obstruction should

be painted with yellow and black stripes.


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Provide an open tread rise at the rear.

Provide a safety screen behind open stairs and at landings (see Figure 11.5.3bis) to

prevent equipment or personnel falling. Note: Safety screens prevent tools/equipment

which are placed on the floor while work is carried out from being inadvertently knocked offa landing onto operators or plant below.

FIGURE 11.5.3bisExamples of Safety Screens

Where possible, provide safety rails on open landings.

Where possible, provide a non-skid tread surface on ladders.

Replace treads with rungs and remove handrails when the angle of the ladder exceeds 75degrees.

Ensure vertical ladders (angle greater than 75 degrees) dimensions are in accordance withFigure 11.5.3.


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12.5.4. Vertical Ladder Dimensions (Adapted from Woodson, Tillman and Tillman 1992)

FIGURE 11.5.4bis

Do not use ladders where frequent access is required, when carrying large heavy items oras emergency routes.

Where possible, specify that vertical ladders which are used to provide access to multiplelevels should be offset at each successive level.

Provide, as a minimum, guard-rails (e.g. self closing, lift up rails or swing gate) at the topentrance of each vertical ladder in order to stop people from falling down.

Provide cages, wells, or other safety devices for fixed vertical ladders over 3.65m (12 ft)long. Cage dimensions should be as shown in Figure 11.5.4bis.


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Recommended Ladder Cage Dimensions (Copyright 1985. Electric Power ResearchInstitute. EPRI NP-4350. Human Engineering Design Guidelines for Maintainability.Reprinted with Permission)

FIGURE 11.5.4bis

Ensure the cage extends 1.1m (43 in.) above the top of the landing unless alternativeprotection is provided.


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12.5.5.Ramps

Ensure ramp dimensions are in accordance with Figure 11.5.5.

Recommended Ramp Dimensions (Copyright 1985. Electric Power Research Institute.EPRI NP-4350. Human Engineering Design Guidelines for Maintainability. Reprinted withPermission)

FIGURE 11.5.5

Provide ramps with non-skid surfaces.

Prevent ramps extending further than 9.2m (30 ft) by inserting an intermediate level.Provide flat platforms at the bottom of the ramp and at any point at which the ramp systemchanges direction. See Figure 11.5.5bis.


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Ramp Design (Copyright 1985. Electric Power Research Institute. EPRI NP-4350. HumanEngineering Design Guidelines for Maintainability. Reprinted with Permission)

FIGURE 11.5.5bis

12.5.6.Elevators

Provide elevators where large heavy items of equipment need to be moved verticallythrough the installation.

Provide communication equipment and escape provisions should personnel becometrapped within the elevator.


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12.5.7.Toe and Hand Holds

Provide formal access for personnel reaching overhead equipment or accessing equipmentrequiring maintenance, so that installed equipment is not stood on or used as hand holds orfoot holds which may lead to equipment damage and loss of balance and falls.


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12.5.8.Portable Ladders

Ensure the maximum lengths for portable metal ladders are in accordance with Table11.5.8.

Portable Metal Ladders Ladder Type Max. Length


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12.5.9.Figures and tables

Table Mobile Workspace Dimensions (Based on American Society for Testing Materials(ASTM) 1988)


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Figure 11.5.9 Workspace Dimensions (Based on American Society for Testing Materials (ASTM)1988)


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Figure 11.5.10 Visual Cone (Adopted from Woodson 1991)

Figure 11.5.11 Vertical Viewing Angles (Reprinted, with permission, from the Annual Book ofASTM Standards, copyright American Society for Testing and Materials, 100 Barr Harbor Drive,West Conshohock, PA 19428-2959)


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Figure 11.5.12 Horizontal Viewing Angles (Reprinted, with permission, from the Annual Book of

ASTM Standards, copyright American Society for Testing and Materials, 100 Barr Harbor Drive,West Conshohock, PA 19428-2959)

Figure 11.5.13 Positioning Displays and Controls


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Table 11.5.13 Horizontal Reach Dimensions (Reprinted, with permission, from the Annual Book ofASTM Standards, copyright American Society for Testing and Materials, 100 Barr Harbor Drive,

West Conshohock, PA 19428-2959)


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Figure 11.5.14 Functional Reach from a Ladder (Adapted from Woodson, Tillman and

Tillman 1992)


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Figure 11.5.15 Examples of Rim Style

Table 11.5.16 Handwheel Forces

HANDWHEEL DIAMETER

SMALL 150-180 MM (6-7 IN.) 22 N (5 LB.)

LARGE 455-485 MM (18-19 IN.) 220 N (50 LB.)

Note: These figures represent the maximum forces which can be applied in ideal

conditions. Where conditions are less than optimum, forces should be replaced.


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Figure 11.5.17 Hand Crank Force Limits (Wooeson, W.E. Tillman, B., and Tillman, P., HumanFactors Design Handbook, McGraw-Hill, 1992, Reproduces with Permission)


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Figure 11.5.18 Lever Force Limits

Figure 11.5.19 Recommended Mounting Heights for Valve Handwheels (Reprinted, withpermission, from the Annual Book of ASTM Standards, copyright American Society forTesting and Materials, 100 Barr Harbor Drive, West Conshohock, PA 19428-2959)


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13. INSULATION.

Value indicated in the tables1 and 2 below are temporary and for piping studies only .Final values will be defined by insulation specification.

13.1. Insulation Thickness for personnel protection.

TABLE 1

Lines and Vessels Using Mineral Fiber or Calcium Silicate Insulation with AluminumJacketingTable Based on Temperature of 34C (93F), and 4.5 MPH Wind SpeedTable To Be Used When Average Yearly Temperature is 21C (70F)Maximum Fluid Temperature (C) to Keep Exposed Surface Temperature Below 71C(160F)

Insulation Thickness, Inches

Pipe

Diam.

Inches 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0

1.0 460 600 677 - - - - - - - - - -

1.5 390 515 621 677 - - - - - - - - -

2.0 370 482 585 677 - - - - - - - - -

2.5 349 457 556 646

3.0 333 435 530 614

4.0 306 408 493 574

6.0 279 366 445 518

8.0 262 342 416 483

10.0 249 325 392 457

12.0 239 310 377 438

14.0 233 302 369 429

16.0 228 293 357 414

18.0 221 286 345 402

20.0 218 279 338 393

24.0 208 268 324 377

30.0 200 256 307 358

36.0 193 247 295 345

Vessels* 140 173 200 229

To be used for vessel sizes above 36.


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13.2. Hot insulation thickness requirements.

TABLE 2

Lines and Vessels Using Calcium Silicate Insulation with Aluminum JacketingEconomic Thickness Based on $3.00/MBtu Fuel Gas(2)

Optimal Maximum Temperature for Specified Thickness, C(1)

Insulation Thickness, Inches

Pipe

Diam.

Inche

s

0. 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0

0.5 27 27 143 330 566 649 - - - - - - - -

1.0 26 27 129 299 514 649 - - - - - - - -

1.5 24 34 105 225 385 575 649 - - - - - - -

2.0 23 36 98 202 346 518 649 - - - - - - -

2.5 23 42 92 186 316 471 649 - - - - - - -

3.0 21 44 87 171 288 427 590 649 - - - - - -

4.0 21 33 83 154 255 379 524 649 - - - - - -

6.0 21 36 77 136 216 317 435 568

8.0 21 37 74 125 195 283 386 505

10.0 21 39 72 118 179 260 351 457

12.0 21 41 71 113 171 243 330 425

14.0 21 42 71 111 167 236 317 408

16.0 21 43 70 109 160 225 302 388

18.0 21 44 70 107 156 218 289 371

20.0 21 44 69 105 151 210 280 357

24.0 21 45 68 102 145 200 264 337

30.0 21 46 68 100 140 190 249 315

36.0 21 46 70 98 136 184 238 299

Vesse

ls*

21 52 72 114 125 156 191 228

* Use for vessel sizes above 36 and larger.


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14. PIPING SPACING TABLES

OD.FLANGE 25 25

OD.FLANGE

DN " 1 2 3 4 6 8 10 12 14 16 18 20 24

DN " DN 25 50 80 100 150 200 250 300 350 400 450 500 600

E E 1 25 105 125 145 170 200 230 265 300 335 365 395 430 500

2 50 140 160 180 215 245 275 315 345 380 410 445 510

3 80 175 195 230 260 290 330 360 395 425 455 525

4 100 210 240 275 305 345 375 405 440 470 540

OD + od 6 150 270 300 330 370 400 435 465 495 565

2 8 200 325 355 395 425 460 490 520 590

10 250 385 420 455 485 515 550 620

E = SPACING 12 300 450 480 510 545 575 645

14 350 495 525 560 590 660

OD = OUTSIDE DIAMETER 16 400 550 585 615 685

18 450 610 640 710

20 500 665 73524 600 785

NOTES:

Minimum spacings are calculated w ith a space of

25mm between flange & pipe (included insulation

thickness if any) In case of orifice flange see

posibility if pressure connection mounting.

DN " 1 2 3 4 6 8 10 12 14 16 18 20 24

DN " DN 25 50 80 100 150 200 250 300 350 400 450 500 600

1 25 115 150 160 190 230 275 315 345 360 395 435 470 560

2 50 165 175 200 245 290 330 360 375 410 450 485 575

3 80 190 215 260 305 345 375 390 420 465 500 590

4 100 230 275 315 355 385 405 435 475 510 605

6 150 300 345 380 415 430 460 505 540 630

8 200 370 410 440 455 485 530 565 655

10 250 435 465 480 515 555 590 680

12 300 490 505 540 580 615 705

14 350 525 555 595 630 725

16 400 580 620 655 750

18 450 645 680 775

20 500 710 800

24 600 850

600# & 900#

E = (+) 25

odPIPE 150# & 300#


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PIPING SPACING TABLES

OD.FLANGE 25 25

OD.FLANGE

DN " 1 2 3 4 6 8 10 12 14 16 18 20 24

DN " DN 25 50 80 100 150 200 250 300 350 400 450 500 600

E E 1 25 115 150 160 190 230 275 315 345 360 395 435 470 560

2 50 165 175 200 245 290 330 360 375 410 450 485 575

3 80 190 215 260 305 345 375 390 420 465 500 590

4 100 230 275 315 355 385 405 435 475 510 605

OD + od 6 150 300 345 380 415 430 460 505 540 630

2 8 200 370 410 440 455 485 530 565 655

10 250 435 465 480 515 555 590 680

12 300 490 505 540 580 615 705

E = SPACING 14 350 525 555 595 630 725

16 400 580 620 655 750

OD = OUTSIDE DIAMETER 18 450 645 680 775

20 500 710 800

24 600 915

NOTES:

Minimum spacings are calculated w ith a space of

25mm between flange* & pipe (included insulation

thickness if any) In case of orifice flange see DN " 1 2 3 4 6 8 10 12 14 16 18 20 24

posibility if pressure connection mounting. DN " DN 25 50 80 100 150 200 250 300 350 400 450 500 600

1 25 125 160 195 220 285 320 380 425 470 515 575 640 745

2 50 175 210 235 300 330 395 435 480 530 590 655 760

3 80 225 250 315 345 410 450 495 545 605 670 775

* Flange or body valve for 2500# above 12". 4 100 260 325 360 420 465 510 555 615 680 785

to be checked w ith valves supplier. 6 150 350 385 450 490 535 585 645 710 815

8 200 410 475 515 560 610 670 735 840

10 250 500 545 590 635 695 760 865

12 300 570 615 660 720 785 890

14 350 630 675 735 800 910

16 400 700 760 825 930

18 450 790 850 960

20 500 875 985

24 600 1035

2500#

E = (+) 25

odPIPE 1500#


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15. REFERENCE DOCUMENTS

EXXON DOCUMENTS.

Drafting standards.EMDC EDE G ZS 0122.1001

Equipment access and removal FPSO materials handling report.NG01 BRE P LR 0191.8002

Facilities layout and general operational & Safety systems.EMDC EDE G ZS 0182.2001

Common requirements & Specifications for production facilities.EMDC EDE G ZS 0602.1001.

Topsides to hull TIE IN listNGO1.BRE.P.LL.0169.8001

Numerical index for EMRE international practices.

EMCD.EDE.G.ZS.0012.0002 Unit of measurement.EMDC.BRE.G.ZS.0115.1001

General valves specification.EMDC.BRE.G.LS.0614.3001

Insulation.EMDC.EDE.G.LS.0615.4001.

Corrosion protection and monitoring.EMDC.EDE.G.MS.0260.2001

Composite piping in offshore fire water and seawater service.EMDC.EDE.G.LS.0612.1001

Piping material classes.EMDC.BRE.G.LS.0614.3100

Upstream identification of components, devices, lines, and valves.NGER-EDE-05-ZS-121-00.0002

Piping requirement for packaged equipmentEMDC-BRE-G-LS-0613.3001

Bridge crane and miscellananeous material handling equipmentEMDC-EDE-G-RS-0470.3031

Piping systems designEMDC-EDE-G-LS-0612.2001

Relief, Flare, vent and hydrocarbon drain systemsEMDC-EDE-G-PS-0690.2001

General valves specificationEMDC-BRE-G-LS-0614.3001

Painting and protective coatingEMDC-EDE-G-MS-0262.4007

Pig launchers and receiversEMDC-EDE-G-RS-603.3015

CONTRACTOR DOCUMENTS.

Piping line list.NGO1.BOE.P.LL.0100.8002

Critical line list.

NGO1.BOE.P.LL.0100.8003 Manual valve list.NGO1.BOE.P.LL.0100.8005

Special items list.


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NGO1.BOE.P.LL.0100.8006

3D PDMS procedure.NGO1.BOE.P.LP.0100.8003/4/5/6/7.

Supporting design philosophy.NGO1.BOE.P.LQ.0100.0001A

Standard pipe supports.NGO1.BOE.P.LQ.0100.0002A

Piping Stress analysis criteriaNG01.BOE.P.LS.0135.1002

Piping Stress analysis philosophyNG01.BOE.P.LP.0100.8008

3D CAD Set up general coordination procedureNG01-BOE-G-ZP-0100-8011

piping design procedure

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