S 000-1360-0001 v-1_0001_general specification for piping

NSRP
Complex
Nghi S
Employer Contract No.:, Contractor
Rev
1
0
A
Operation Centre JOB Code:
Responsible Company
NSRP
Complex Project
Son, Vietnam
Employer Contract No.:, Contractor
Date
19/MAY/15
29/NOV/13
18/JUL/13
Responsible Company
JVD
Project
, Vietnam
Nghi Son
Employer Contract No.:, Contractor JOB Code: 0
Page
19/MAY/15
29/NOV/13
3,17,18,
22,24,25
/13 ALL
Responsible Company Prepared
General
Unit Abbreviation.:
Issue Purpose
Nghi Son Refinery and Petrochemical
Limited Liability Company
JOB Code: 0-6495
Page
17 Issue for Construction
3,17,18,
22,24,25
Issue for Construction
(Employer
Incorporated)
ALL Issue for Approval
Prepared by
J.Sato
General Specification for Piping
Unit No.:
Unit Abbreviation.:
Document Class:
Issue Purpose
Refinery and Petrochemical
6495-20
Description
(Employer’s Comment
Incorporated)
Issue for Approval
Operation Centre
Checked
Specification for Piping
Unit No.: Not Applicable
Unit Abbreviation.:
Document Class:
Issue Purpose
Description
s Comment
Issue for Approval
Operation Centre
Checked by
H.Sakiyama
Not Applicable
Unit Abbreviation.: Not Applicable
Document Class: Z
For Construction
Employer Doc. No.
Contractor Doc. No.
Operation Centre Doc. No.:
H.Sakiyama
Not Applicable
Not Applicable
Construction
Employer Doc. No.
Contractor Doc. No.
S-000-1360
Rev. 1
Date: 19
Prep'd
J.S.
J.S.
N.T.
Doc. No.:
Approved by
T.Yamamoto
Employer Doc. No.
Contractor Doc. No.
1360-0001V
Page 1 of 28
19/MAY/15
Chk'd App'd
H.S. T.Y.
H.S. T.Y.
H.S. T.Y
Approved by
T.Yamamoto
28
App'd
T.Y.
T.Y.
T.Y.
INDRA
21-MAY-2015

NSRP Complex Project
Employer Doc. No.
Rev. 1
Title: General Specification for Piping
Contractor Doc. No.
S-000-1360-0001V
Page 2 of 28
CONTENTS
1 PURPOSE.............................................................................................................................................4
2 SCOPE ..................................................................................................................................................4
3 DEFINITIONS........................................................................................................................................4
4 REFERENCE DOCUMENTS................................................................................................................4
4.1 Codes, Standards and Specifications ...............................................................................................4
4.2 Other Documents.................................................................................................................................5
5 PIPING COMPONENTS........................................................................................................................5
5.1 Selection...............................................................................................................................................5
6 DESIGN STRESS CRITERIA ...............................................................................................................5
6.1 General .................................................................................................................................................5
6.2 Exemptions ..........................................................................................................................................6
6.3 Temperature Conditions .....................................................................................................................6
6.4 Bellows & Expansion Joints...............................................................................................................6
7 SUPPORTING OF PIPING....................................................................................................................6
7.1 Design Loads .......................................................................................................................................6
7.2 Pipe Spans ...........................................................................................................................................7
7.3 Pipe Shoes ...........................................................................................................................................7
7.4 Sloping Lines .......................................................................................................................................7
7.5 Special Considerations.......................................................................................................................7
7.6 Spring Supports...................................................................................................................................8
8 PIPING LAYOUT...................................................................................................................................8
8.1 General .................................................................................................................................................8
8.2 Piperacks..............................................................................................................................................9
8.3 Battery Limit.........................................................................................................................................9
8.4 Offsite Piping .....................................................................................................................................10
8.5 Piping for Instruments ......................................................................................................................11
8.6 Pumps.................................................................................................................................................13
8.7 Compressors......................................................................................................................................13
8.8 Steam Turbines..................................................................................................................................14
8.9 Heat Exchangers................................................................................................................................14
8.10 Drums and Towers ............................................................................................................................15
8.11 Utility Systems...................................................................................................................................16
8.12 Vents and Drains ...............................................................................................................................17
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8.13 Utility Hose Stations..........................................................................................................................17
8.14 Steam Tracing....................................................................................................................................18
8.15 Chain and Gear Operated Valves.....................................................................................................18
8.16 Weld Proximity...................................................................................................................................18
8.17 Pump suction strainer.......................................................................................................................18
9 CLEARANCES....................................................................................................................................18
10 ACCESS..............................................................................................................................................18
11 FABRICATION....................................................................................................................................18
12 CLEANING..........................................................................................................................................18
13 TESTING.............................................................................................................................................19
14 INSULATION AND PAINTING............................................................................................................20
ATTACHMENT-1 PIPE SPACING...................................................................................................................21
ATTACHMENT-2 MINMUM CLEARANCE REQUIREMENTS.......................................................................22
ATTACHMENT-3 MINIMUM ACCESS REQUIREMENTS..............................................................................24
ATTACHMENT-4 ELEVATION REQUIREMENTS..........................................................................................26
ATTACHMENT-5 MODULAR PETROCHEMICAL PLANT LAYOUT GUIDELINES.....................................27
ATTACHMENT-6 STICK-BUILT’ PETROCHEMICAL PLANT LAYOUT GUIDELINES................................28
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1 PURPOSE
This Project Specification specifies engineering requirements and recommended practices for the
design of metallic and non-metallic piping systems and the layout of process plant in the following
installations:
Petroleum Refineries
Chemical Plant
Terminals
Oil and Gas Gathering Centres
Tank Farms
2 SCOPE
The scope of this Project Specification is to define the basic design parameters and standards
used in the design of piping systems and layout of process plant by Contractor. The specification
is not applicable for the following installations:
Main pipelines in land or sub-sea locations
Underground sewage and open drain systems
Instrument piping
Internal piping forming part of equipment.
Heating, ventilating and domestic water systems within buildings
Piping within the jurisdiction of national or local authorities
Piping within the jurisdiction of ASME Boiler and Pressure Vessel Code, Section I, Power
Boilers
Ancillary piping supplied as part of an approved vendor package
3 DEFINITIONS
Work Practices Departmental working methods employed by Contractor to achieve contract
execution procedure requirements.
4 REFERENCE DOCUMENTS
4.1 Codes, Standards and Specifications
4.1.1 As a minimum requirement piping shall be designed, fabricated, inspected and tested in
accordance with ASME B31.3, Process Piping.
4.1.2 For a list of all applicable Codes,Standards and Specifications and the order of precedence
in case of conflict between them, see 3550-8820-SP-0006 (Engineering Design Basis).
4.1.3 For a list of applicable Project Specifications refer to 3550-8820-IN-0001 (Engineering
Specifications and Standards index) and its superseded documents by contractor.
For a list of applicable International Standards refer to S-000-1140-0007V (International
codes and Standards List).
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4.2 Other Documents
This standard shall be implemented and used in conjunction with the following:
Process Flow Diagrams (PFD’s)
Engineering Flow Diagrams (EFD’s)
Line Classification Lists
Equipment Lists
Special Piping Items
5 PIPING COMPONENTS
5.1 Selection
5.1.1 Selection of piping components, branch reinforcement, standard piping assemblies and
materials of construction for individual piping systems shall conform to S-000-1360-0002V
(Piping Material Specification).
6 DESIGN STRESS CRITERIA
6.1 General
Analysis of piping systems shall be as directed by S-000-1360-0005V (Specification for Stress
Analysis). The design of the pressure piping system shall include, as a minimum, proven regard of
the following requirements and considerations:
6.1.1 All necessary calculations to show that the design stress criteria specified by the
applicable codes and relevant Employer requirements are satisfied in full. This shall apply
to piping above and below ground. However, all other aspects of underground piping are
outside of the scope of this specification.
6.1.2 The following criteria shall be considered during analysis:
Wall thickness and branch reinforcement for positive pressure and vacuum or external
loading when necessary.
Thermal expansion and contraction.
Stresses caused by pressure, the weight of the pipe, its contents and insulation, valves
and fittings.
External loading such as equipment vibration, fluid flow, wind loads, seismic loads and
settlement.
6.1.3 Piping systems shall be adequately flexible and wherever possible this should be
achieved by the natural flexibility of the pipework configuration. If necessary, the route of
the piping should be modified or expansion loops incorporated to obtain sufficient flexibility
to reduce the stress range to acceptable limits. Expansion joints or similar may be
considered as an alternative design solution in exceptional circumstances - refer to
Section 6.4.
6.1.4 Category D and M piping systems shall be identified by Licensor (or Employer where
appropriate) in accordance with ASME B31.3. The necessary precautions shall be taken
into account during analysis by Contractor.
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6.1.5 Visual inspection or approximate calculation methods may be applied if they are used in
the range of configuration for which their adequacy has been demonstrated. Approximate
calculations may include the use of approved industry recognised charts, nomographs and
simplified formulae. The objective of using these methods is to demonstrate that recourse
to more accurate methods is not required.
6.2 Exemptions
6.2.1 No formal analysis of adequate flexibility is required for systems described in the following:
Systems where the maximum temperature change will not exceed 30ºC from ambient.
As otherwise excepted by ASME B31.3 Section 319.4.1.
6.3 Temperature Conditions
6.3.1 The Piping Line List indicates a design temperature and an operating temperature for
each line; stress analysis shall be carried out based on the Maximum/Minimum Metal
temperature.
6.4 Bellows & Expansion Joints
6.4.1 In cases where it is impractical to increase the flexibility of a pipe line to reduce the stress
range and/or terminal loads to an acceptable level. The use of bellows or expansion joints
as a design solution can be considered. This should only be done in consultation with, and
with the approval of, Employer.
6.4.2 The design, manufacture, testing and installation of expansion joints shall comply with the
latest edition of Expansion Joint Manufacturers Association (EJMA) standards, unless
alternative codes are stipulated by Employer.
7 SUPPORTING OF PIPING
7.1 Design Loads
7.1.1 The design of pipe supports shall take into account the following load criteria as
necessary. .
Pipe weight, including pipe contents and insulation where applicable.
Weight of water for hydrostatic test.
Weight of snow and ice.
Loads derived from flexibility analysis.
Friction loads arising from movement of pipe on supports.
Earthquake loads.
Wind loads.
Vibration (induced by two-phase flow, reciprocating machinery etc.).
Differential settlement.
Weight of pipe support attachments.
Pipe-rack sway / deflection.
Pipe surge / slug forces.
Relief valve discharge reactions (refer to API RP 520).
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7.2 Pipe Spans
Contractor shall ensure that the pipe supports spans are in accordance with the limits of
deflections & allowable stress specified in Section 8.18 in S-000-1360-0005V. In the case of
sloping lines the maximum deflection shall not impede the free draining of the line.
7.3 Pipe Shoes
All un-insulated lines shall rest directly on supports; insulated lines (but not lines with personnel
protection) shall be supported on shoes to ensure that the outside diameter of the insulation clears
the supporting steel.
7.4 Sloping Lines
Sloping lines shall be supported using standard shoes trimmed to suit (down to a minimum of
50mm if insulation thickness allows) or shimmed to suit for smaller make-up dimensions. Where
necessary drawings shall be marked ‘SHIM TO SUIT’.
7.5 Special Considerations
Special consideration shall be given to restraining piping systems that experience the following
characteristics:
Shock Loading
Slug flow
Dynamic amplification
Vibration
Cryogenic condition (i.e. cold insulation lines)
Each of these cases shall be reviewed independently and the system supported and controlled
adequately at each change in direction. In the instance of vibration, the piping system must be
clamped accordingly, and welded attachments must be kept to a minimum in order to reduce the
onset of fatigue cracking in welds.
When slug flow is present in a system, the pipe support design must be able to withstand high
loads and restrict any movement associated with such loads.
Cryogenic piping systems shall be reviewed carefully and consideration given to the support
medium. If practicable, consideration should be given to use of the in-line insulation as the support
medium.
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7.6 Spring Supports
7.6.1 Spring supports should generally be of the variable type. They shall be pre-set by the
Vendor to a load that allows the correct supporting force when the pipe is in the operating
condition. Constant type spring hangers shall be used instead of the variable type when
the variation in the supporting force would otherwise exceed 25% or where any variation in
spring load could adversely affect nozzle loading on strain sensitive equipment.
7.6.2 Where possible, spring supports should be easily accessible to ease installation, release
and maintenance.
7.6.3 The piping test weight shall be stated on spring support documentation for all springs.
8 PIPING LAYOUT
8.1 General
8.1.1 Equipment spacing shall be in accordance with S-000-1360-0003V (Specification for
Equipment Spacing). To achieve the most economical arrangement, piping shall be routed
to ensure the shortest practical length with a minimum number of fittings consistent with
the requirements of the P&ID’s and provision of expansion for flexibility.
8.1.2 Generally, onsite piping shall be run overhead within the unit limits.
8.1.3 Piping and structures shall be arranged to allow operation, inspection, maintenance and
dismantling of equipment. There shall be sufficient access to allow mobile lifting devices to
approach process equipment and make lifts without obstruction and with a minimal
removal of pipework.
8.1.4 Piping and pipe supports shall be kept clear of fired heater tube and heat exchanger tube
bundle removal areas.
8.1.5 Piping at grade shall not be located above manholes or drain trenches,nor supported from
grade above buried lines and cables.
8.1.6 Flanged connections must be provided to permit dismantling of lines where removal of
equipment is necessary for maintenance and inspection. Specific additional flanged
connections may be required to allow chemical cleaning or pigging of lines.
8.1.7 Special considerations shall be given to lines with slug flow particularly with regard to the
supporting systems (Ref. Section 7.5).
8.1.8 Attachment 5 shows cross sections through a typical modular petro-chemical plant layout,
while Attachment 6 shows a cross section through a typical ‘stick-built’ plant. The overall
philosophy of plant and piping layout will be dictated by individual project fabrication and
erection strategies. Construction review is necessary to ensure plant layout follows project
strategies.
Particularly in the case of modular construction, plant layout shall take into account
transportation considerations.
Examples would include:
Additional steelwork and temporary supports.
Lifting restraints (total mass, centre of gravity).
Hook-up access (permanent platforms or scaffolding).
Sterile areas (beneath transport beams and above lifting points).
Isolation of systems (flushing, hydro-testing and chemical cleaning).
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8.2 Piperacks
8.2.1 Specified elevations shall be selected for bands of lines running North-South and other
specific elevations for bands running East-West. Generally, these elevations shall be used
throughout the unit, except in exceptional circumstances (e.g., where pockets must be
avoided). A minimum separation of 1500mm between rack levels shall be used (a
separation of 2000mm is preferred). A minimum separation of 1500mm between rack
levels shall be used for the unit pipe racks, and 2000mm shall be used for the
interconnecting pipe racks.
8.2.2 On overhead pipe racks, the smallest pipe run size shall be 2inch norm bore. This
(exceptionally) may be supported by adjacent large diameter pipe to avoid numerous
intermediate pipe supports. In such instances the small piping may be intermixed with the
large diameter pipe, as a general guide, the larger pipe should be a minimum of 4x the
diameter of the smaller pipe. This should be used as an exception providing there are
significant cost or construction savings (this situation can lead to problems if the larger
piping becomes redundant in the future).
8.2.3 In general, adequate space shall be provided to support instrument cable racking and
electrical lighting conduits from the piperack structure. For units requiring overhead
installation of electrical power, space for electrical cable racking an extra level shall also
be included. Determination of these space reservations and the method of supporting
should be established early during piperack design.
Piperacks shall include for 20% unoccupied space for the addition of future lines.
8.2.4 Where header block valves are required, and there is no suitable access platform in the
vicinity, the valve shall be located in the branch line immediately outboard of the piperack
edge. The location should allow safe access from temporary ladders, staging etc. without
the need to enter the piperack structure. This does not apply to instrument air headers
(Ref. 8.11.4), and for this reason, headers should be placed at or near the piperack edge.
8.2.5 Wherever possible the following lines shall be located at or near to the piperack edge: -
Steam and exhaust steam main headers.
Hot large bore lines.
Large bore liquid filled lines.
8.2.6 Consideration shall be given to placing flare headers on the outboard side of the piperacks,
cantilevered off rack columns to cater for the slope of the line. In no case shall the flare or
any other line be installed directly over the top of the piperack column. This will prevent the
extension of the column during any future upgrade.
8.2.7 Attachment 1 of this Project Specification identifies standard spacing between lines in
piperacks.
8.2.8 Process service tiers shall generally be below utility service tiers in multi-tier racks.
8.3 Battery Limit
8.3.1 The arrangement of the battery limit valves shall consider safe permanent access for
spading, pressure/temperature measurement and depressurising of the system. Vertical
arrangement is preferred. A local platform and access is to be provided for this purpose.
Refer to Attachment-3 for minimum access requirements. As an exception, the flare
header can be routed with a nominal slope through and over the battery limit area.
Refer to D-000-1360-0113V for typical battery limit arrangement.
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8.3.2 When cooling water is distributed as an underground, system, all instruments and unit
block valves and instruments shall be installed in below grade valve pits.
8.4 Offsite Piping
8.4.1 Wherever possible, overhead piperacks shall be kept to a minimum. All piping shall be
located on pipetracks at grade and supported on concrete sleepers. Individual pipes can
be supported from concrete piers.
Where double pipe banks are required, steel columns and supports stooled up from
concrete piers or sleepers should be considered, with longitudinal tie beams if necessary.
As a minimum, a clearance of 1000mm between the two banks shall be provided.
Consideration shall be given to the size of headers and the size of supporting steel and
the thickness of any insulation.
Pipetracks and piperacks shall include for 20% unoccupied space for the addition of future
lines.
8.4.2 Where grade pipetracks cross under roads the piping shall be routed through open
concrete culverts.
Buried lines shall be avoided, except for specific utilities i.e. fire fighting water or cooling
water systems and bund penetrations.
Where, individual pipes at grade are required to cross under a road they shall be buried
within a sleeve with a minimum cover in accordance with Section 11.6.1 in
S-000-1310-0001V (Detailed Engineering Design data for Civil and Structure). The line
(insulated or uninsulated) is to be passed through the sleeve and sealed without
inaccessible joints or flanges.
Specific regard shall be made to line draining of low points. Corrosion protection of
underground or submerged metallic piping shall be in accordance with S-000-1360-0010V
(Technical Specification for Wrapping Tape of Underground Pipe).
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8.4.3 Uninsulated lines passing through bund walls shall be externally protected against
corrosion.
8.4.4 The minimum height of concrete piers or sleepers shall be 500mm.
8.4.5 Wherever possible, changes in direction shall be accomplished by flat turning.
8.4.6 Careful consideration shall be given to the elevation of tanks and their respective pumps
and the routing of suction lines of considerable length to avoid pocketing.
8.4.7 Consideration shall be given to expansion brought about by process or climatic conditions.
The expansion shall preferably be absorbed by the use of the natural flexibility of the
system, loops or bends. Vertical loops and the use of expansion joints shall be avoided.
8.4.8 Consideration shall be given to providing flexibility in the piping local to storage tanks to
allow for future settlement and tank wall deformation.
8.4.9 The forces imposed on nozzle connections on tanks should be minimised by providing
flexibility in the connecting lines as if they were anchored at the bunds.
8.4.10 Except at valves, in-line items and line terminations, the use of flanges shall be avoided.
8.5 Piping for Instruments
8.5.1 General
1. Wherever possible, remote instruments shall be line mounted. All instruments, which
require regular maintenance or calibration, shall be accessible from grade or a permanent
platform. This includes accessories such as corrosion probes, condensate pots and seal
connections. Access from temporary ladders, mobile steps and platforms shall be limited
to the items specified in Attachment-3. Instruments such as pressure instruments,
temperature instruments and level gauge isolation valves shall be located and installed
with satisfying the requirements specified in Section 4.2 in 3550-8550-SP-0011
(Instrument Design and Installation Specification) and S-000-1370-0041V
(Instrument/Piping Interface Specification). Access from a platform and a permanent
ladder shall comply with the requirements specified in Section 4.3 in 3550-8550-SP-0011.
2. Instrument connections shall be orientated so that instrumentation does not obstruct aisles,
ladders or platforms, whilst still being accessible. Piping shall conform to the requirements
of S-000-1370-0041V.
3. Clearance envelopes are identified in 3550-8550-SP-0011 to allow installation, access to
and removal of instrumentation items. In addition, control valve and safety valve
dimensions shall be supplied by Instrument Engineering.
8.5.2 Control Valves
1. Regulating, throttling or control valves shall be accessible for hand operation. When used
in conjunction with an indicator that responds to the operation of a valve, the valve and
indicator shall be located so that the operator can observe the response when operating
the valve.
2. All control valve arrangements, and supports shall be designed to allow for removal of the
valve for maintenance. No provision should be made for servicing internals in situ.
3. Control valves shall be located at grade or first level of structures unless otherwise
specified for process requirements.
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8.5.3 Flow Instruments
1. Minimum straight run requirements of pipe upstream and downstream of flow orifices or
flow venturi’s shall be in accordance with S-000-1370-0001V (Instrument General
Specification).
2. Flow orifice flanges and orientation of tapping shall be in accordance with
S-000-1370-0041V.
3. Orifices shall be installed in horizontal lines wherever possible. If installed in vertical lines,
flow shall be upward for liquids and downward for gases.
4. Elevation of orifices for pedestal mounted flow meters (except in air or gas service or
underground lines) shall be a minimum of 2100mm above grade or platform, to allow
meter leads to slope towards instruments.
8.5.4 Level Instruments
1. Level gauge glasses at vessels shall be visible whenever possible from the valve which
controls the level in the vessel.
2. When possible, level gauge glasses should be positioned adjacent to associated level
instruments. Standpipes (bridles) may be used to minimise vessel connections. When a
standpipe is used, a block valve shall be installed at each vessel connection. Standpipes
can be used only for multiple level gauges as an alternative to individual connections. In
any case, level transmitter shall not be installed with standpipes and shall be
independently mounted direct to vessel nozzles.
3. When designing piping hook ups for level instruments, due regard shall be given to
accessibility, readability and proximity to adjacent ladders, cable trays, piping etc. Vent
and drain requirements of instruments shall also be taken into account and adequate
clearance provided accordingly. Refer to Section 7.0 in S-000-1370-0001V.
8.5.5 Temperature Instruments
1. The minimum pipe size for thermowell installation is 4”NB except where installation is in a
3”NB elbow or tee at a change of direction. Piping smaller than 4”NB shall be locally
swaged up to 4”NB.
2. Thermowell location shall be a minimum of 10 pipe diameters downstream of a junction of
two streams of different temperature unless otherwise specified in the P&ID. Location,
orientation and accessibility of thermowells shall take account of the withdrawal space
required for the instrument.
8.5.6 Relief Valves
1. Relief valve discharge lines from adjacent equipment may be routed into a common
discharge header providing the header is of sufficient size that the relieving capacities of
the valves are not affected. When combining such lines, special consideration shall be
given to thermal expansion of the piping system and back pressure on relief valve
settings.
2. Relief valves that discharge into a common header shall discharge into the top of the
header. Valves shall be located above the header with the discharge line free to drain into
the header. Valve stems shall be in or below the horizontal plane to ensure failsafe valve
operation in the case of valve corrosion. The angle of the branches connecting to the
common header shall be 60 degree from pipe axis in accordance with Section 4.2 in
3550-8440-SP-0025 (General Requirement for Pipework Fabrication).
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3. Relief valves, which discharge to atmosphere, shall exhaust away from any operator area.
A 10mm diameter weep hole shall be drilled through the underside of the discharge line at
the lowest elevation. Tail pipe shall be provided and extended until safe location or drain
hub only for steam and BFW service in accordance with Section 8.3.4 in
S-000-1225-0001V (Preparation of P&IDs).
4. Relief valves in hydrocarbon service which are designated by the Engineering Line
Diagram to exhaust to a safe location should, as a minimum, exhaust 3m above any
platform within a horizontal radius of 15 m. In case fired heater is located within 30m, the
exhaust point shall comply with the requirement in Section 8.12.6.
5. For relief valves in steam service the horizontal radius can be reduced to 7.5m. However,
where large volume or high-pressure releases are anticipated, they should be reviewed for
safety on a case by case basis. Relief valves for air and nitrogen service discharging to
atmosphere shall be treated as same manner.
6. Relief valve piping that vents to atmosphere should have the ends cut square.
7. Bracing and supports for relief valves shall be designed to prevent vibration and
over-stressing during discharge and to permit independent removal of the relief valve from
the piping system.
8. Relief valves must be located in board of platform (totally) and spaced to allow adequate
access to individual valves.
9. Relief valve inlet lines must be self-draining back to equipment.
10. Where relief valves operate in pairs they shall not be harnessed together on the discharge
such that the flows are opposing into the two run pipe connections on the same tee. This is
to prevent the discharge flow creating backpressure that repeatedly shuts the paired
valve; this can happen to an extent that a ‘see-saw’ motion becomes evident.
8.6 Pumps
8.6.1 A suction line to a centrifugal pump with side or end entry shall be installed with an
eccentric reducer (top flat) adjacent to the pump nozzle or nozzle size valve. A drain shall
be installed at the low point of the line.
8.6.2 All overhead suction lines shall drain toward the pump without vapour pockets except
suction line of tank pump. In case vapour pocket is unavoidable, piping shall be arranged
so that vapour at vapour pocket portion to be easily vented such as using of valved vent.
8.6.3 The distance between the last elbow in the suction line and the pump suction nozzle shall
not be less than that specified by the Vendor or Employer.
8.6.4 Pumps with double suction impellers shall have piping arranged in accordance with
Contractor/Vendor Standard.
8.6.5 A temporary strainer shall be fitted inside and later removed with its collected sediment.
8.7 Compressors
8.7.1 Where compressors are handling gas, at or near its dewpoint, it may be necessary to
provide a liquid removal facility immediately adjacent to the suction pulsation suppression
device or surge bottle. This is in addition to the primary knockout drum together with
secondary liquid separation facilities in the suction pulsation suppression device or surge
bottle. This additional liquid removal facility is dependent upon Process review of the
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Employer Doc. No.
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Contractor Doc. No.
S-000-1360-0001V
Page 14 of 28
proposed pipe routing and if it is deemed unnecessary will be subject to Employer
approval.
8.7.2 Where required on P&ID, a removable flanged spool piece shall be provided to allow for
strainer cleaning without the need for removing pulsation dampeners or large sections of
piping. This will also prevent the need to realign the compressor after cleaning.
8.7.3 Where an air compressor or gas turbine is equipped with an air intake filter, the intake filter
opening shall be located in such a position as to prevent or minimise the entrance of dust,
moisture, snow, corrosive gases, etc. The suction piping shall be appropriately routed
back to the filter.
8.8 Steam Turbines
8.8.1 Manufacturers normally provide turbines with permanent integral strainers, where the
removal of such strainers is effected through the inlet piping. In these cases the piping
arrangement shall ensure a flanged spool piece or other means of breakout is furnished to
ensure good maintenance.
8.8.2 Drain connections with steam traps to remove condensate shall be provided at the low
point on the turbine inlet line upstream of the block valve. For turbines on automatic
start-up, steam traps should be connected as close as possible to the inlet side of the
automatic start-up valve and at the low point of the inlet line.
8.8.3 A drain with a steam trap shall also be provided at the low point of the exhaust line,
downstream of the block valve.
8.8.4 Steam traps are also required for draining the turbine casing. These traps should be
supplied by the Vendor; however, it should be ensured that the trap discharge is suitably
piped away.
8.8.5 The block valve on the exhaust line of a turbine shall be located at the turbine. This
location permits maximum safety in determining whether the valve is open or closed.
8.8.6 In installations where multiple turbines have a common control valve, a block valve shall
be provided in the steam inlet line to each turbine.
8.8.7 Steam turbine piping shall be designed to incorporate break flanges for steam blowing
during commissioning activities.
8.9 Heat Exchangers
8.9.1 Shell and Tube Exchangers
Equipment shall be supported at or near to grade to permit maximum use of mobile
equipment for maintenance. Mobile equipment (provided by others) will be used for
handling parts and pulling bundles of exchangers. Permanent handling equipment (e.g.
trolley beams) shall be incorporated if access restrictions limit the use of mobile
equipment.
8.9.2 Air Fin Coolers
1. Air fin coolers should be located after due consideration has been given to the provision of
mobile maintenance access for tube bundle removal or rodding. When process and space
conditions allow, air fin coolers should be located above piperacks.
2. For safety reasons, no flanges in hydrocarbon lines shall be located directly under the air
fin coolers.
INDRA
21-MAY-2015

Employer Doc. No.
Rev. 1
Contractor Doc. No.
S-000-1360-0001V
Page 15 of 28
3. All piping to air fin coolers shall be sufficiently flexible to accommodate nozzle
displacements, particularly at sliding end headers. Piping shall be appropriately supported
to meet vendor nozzle loads. For all multi-bundle air fin coolers, inlet lines shall be closed
coupled (minimum piping). Outlet lines shall be close coupled where the air fin cooler has
a split header box arrangement. For non-split header boxes (ie the inlet and outlet
header is one fabrication), the piping shall be designed with sufficient flexibility to meet
vendor allowable nozzle loads. The header piping will be solid supported.
4. All air fin cooler piping design shall be confirmed as acceptable in accordance with stress
analysis procedures. Allowable nozzle stresses used in calculations shall be agreed with
the air fin cooler vendor prior to calculations.
5. Piping shall be routed with due regard for maintenance and access requirements.
Headers to and from air fin coolers shall be designed to give uniform flow to and from
nozzles.
6. Air fin structures are not to be used as pipe supports without approval from the Vendor.
8.10 Drums and Towers
8.10.1 Tower piping shall be orientated and arranged in conjunction with tray, nozzle and
platform requirements. Piping shall be positioned to allow inter-connection with the
piperack and other related equipment.
8.10.2 Where possible, piping shall be grouped to simplify supporting. In the case of pre-dressed
drums and towers, piping shall be routed away from transport saddle locations. Adequate
space shall be allowed between adjacent lines and between lines and the vessel shell to
allow the installation of pipe supports and insulation. The back of pipe to vessel shell
distance shall normally be 450mm for non-insulated lines and 550mm for insulated lines.
In the case of lines requiring significant insulation thickness (eg. cryogenic service), this
clearance shall be increased as appropriate.
8.10.3 Tower piping shall be routed with adequate flexibility to accommodate tower and line
growth for the identified design conditions. This shall include start-up and steam-out
conditions.
8.10.4 Platforms shall be provided for access to valves, instruments, blinds and manways. On
vertical drums and towers, platforms shall be supported off vessel brackets. In the case of
horizontal or short vertical drums, platforms can also be part of the associated structure.
Platform elevations are dictated by the above items in addition to a maximum ladder run of
9m. Refer to Attachment 2 for minimum clearance requirements.
8.10.5 Platform widths are dictated by operator access. Refer to Attachment 2 for minimum
clearance requirements.
8.10.6 Level, pressure and temperature instruments must be placed with due regard to access
for operation and maintenance. Refer to Section 8.5.
8.10.7 Handling of exterior items (eg relief and control valves) and interior items (eg trays) should
be achieved using permanent lifting facilities (eg lifting davits or trolley beams). These are
to be located adjacent to or accessible from the vessel top head platform and require a
dropout volume extending down to grade. Where mobile equipment is to be used, access
from adjacent roads must be maintained.
INDRA
21-MAY-2015

Employer Doc. No.
Rev. 1
Contractor Doc. No.
S-000-1360-0001V
Page 16 of 28
8.11 Utility Systems
Header isolation valve (root valve) on branch lines from the main header or sub-header to users
shall be provided in accordance with Section 8.4.14 in S-000-1225-0001V.
8.11.1 Steam
1. Steam take-off lines and exhaust steam return lines shall be connected to the top of the
headers. Block valves shall be provided in branch lines, in accordance with clause 8.2.4.
2. All low points in steam lines, except steam companion lines and the end of long headers,
should be provided with legs. It may also be necessary to install drip legs at intermediated
points on header with long sections at one elevation. These shall be located immediately
upstream of vertical risers and at a minimum of 50m spacings on straight run lines.
Similarly, they shall also be provided in ‘dead leg’ situations upstream of normally closed
block valves, even if the piping free drains downstream of the valve, (e.g. steam-out,
snuffing steam arrangements).
3. Where steam headers have two way flow (e.g. import/export headers), line drainage
steam traps shall be provided at both ends of each pocket.
4. Within non-freezing design criteria, the requirements for line drainage using steam trap
arrangements may be substituted with an accessible manual drain in non-critical utility
systems (e.g. steam service stations).
5. Steam trap discharge and condensate lines from other similar situations may be grouped
together and discharged to the nearest return header.
6. Condensate may be discharged to the nearest sewer hub or catch basin, when it is
uneconomical to be returned from the steam trap to the collection header, subject to
approval by Employer.
8.11.2 Cooling Water
1. Generally, and where practical, cooling water should be distributed to the various major
users throughout the unit in a below ground steel pipe system. Other users shall be
distributed using an above ground header system.
2. Small branches (1½”NB and below) from the cooling water header shall be taken from the
top of the header to avoid blockage. Larger branches (2”and larger) may be taken from
the top or the bottom of the header to suit the specific layout requirements.
8.11.3 Service Water
Small branches (1½”NB and below) from the service water header shall be taken from the
top of the header to avoid blockage. Larger branches (2”and larger) may be taken from
the top or bottom of the header to suit specific layout requirements.
8.11.4 Air
1. Branch lines from the plant air header shall be taken from the top of the header. Block
valves are required for each branch and shall be positioned local to the user.
2. Drain valves shall be provided at low points in the header to free the system of water that
may collect.
3. Branch lines from the instrument air header shall be taken from the top of the header.
Block valves are required for every branch and shall be located at the header.
INDRA
21-MAY-2015

Employer Doc. No.
Rev. 1
Contractor Doc. No.
S-000-1360-0001V
Page 17 of 28
8.12 Vents and Drains
8.12.1 Vents and drains shall be ¾”NB minimum size, except as otherwise noted on the P&IDs.
Vents and drains intended only for the hydrostatic testing of piping will not be shown on
P&IDs.
8.12.2 Low points of all above ground lines shall contain a valved drain connection except where
the line can be drained elsewhere, (e.g. through equipment). Such drains will not
necessarily be shown on the P&IDs.
Vents and drains shall not be installed on underground lines.
8.12.3 Low point drains shall terminate at least 200mm above grade for process lines and
150mm above grade for utility lines.
8.12.4 High point vents which are required from operation and maintenance point of view will be
shown on P&ID, and they shall be equipped with a valve. High point vents intended only
for the hydrostatic testing shall be provided in accordance with the following criteria.
 PWHT required service and Class 900 and higher service : Flanged Vent
 Pipe classes that are fully butt welded construction : Flanged Vent
 Other than above : Plugged Vent
8.12.5 Sewer manhole vent piping shall full line size. Vents shall discharge at least 3m above
grade when in a safe and open area, and shall extend 3m above any platform, equipment
or pipeway located within a horizontal distance of 8m. Refer to D-000-1316-1002V
(Standard Drip Funnel, Clean-out and Vent Pipe) for other design requirement.
8.12.6 Open vents shall not be located within a horizontal distance of 30m from a Fired Heater
unless the vent is elevated to 15m, in which case, it is allowed to be located 15m
horizontally from the fired heater.
8.12.7 Vent pipe ends shall be cut horizontally to discharge upwards for open vent. In case P&ID
shows other configurations, follow P&ID.
8.13 Utility Hose Stations
8.13.1 Air, steam, water and nitrogen shall be provided to all areas of plant where operation and
regular maintenance is required. At grade coverage shall be achieved utilising 15m hose
lengths from stations at grade. Elevated hose stations shall comprise steam and air as a
minimum, if nitrogen is required, this shall be identified on P&IDs. Elevated utility stations
shall be provided at alternate levels of structures, allowing all areas to be reached with
15m hoses. On towers or reactors, utility stations shall be provided at the top platform
level and at each platform serving a manway. Where manways are in close proximity (i.e.
within 7.5m elevation of each other and of similar orientation), provision shall be made for
a hose station at the upper manway, allowing the hose length to reach the lower manway.
8.13.2 The sequence in which hose connections shall be arranged when looking at the hose
station from the operator’s viewpoint shall be as follows:
Steam, Water, Air, Nitrogen
INDRA
21-MAY-2015

Employer Doc. No.
Rev. 1
Contractor Doc. No.
S-000-1360-0001V
Page 18 of 28
8.13.3 Hose connections shall be orientated vertically downwards and valves and connections
shall be approximately 1100mm above grade or platform level.
8.13.4 Design requirements specified in Section 8.4.21 in S-000-1225-0001V also shall be
referred and complied.
8.14 Steam Tracing
Detailed Specifcation for the design,fabrication and testing of steam tracing shall be provided by
S-000-1360-0007V (Specification for Heat Tracing and Jacketing).
8.15 Chain and Gear Operated Valves
8.15.1 Where constraints dictate that it is not practical or economic to gain fixed access to valves
normally operated during unit run, chains or extension stems can be provided where the
centreline is more than 2100mm above the operating level. Chains must clear the
operating level by 900mm. This is generally to be avoided, only applying in exceptional
circumstances on flanged or butt welded valves larger than 2”. Employer approval is
required for each specific case. Chain operators are not permitted on screwed or socket
weld valves.
8.15.2 Locked Open (LO) or car sealed open (CSO) valves shall be installed with the valve stem
in or below the horizontal plane only.
8.16 Weld Proximity
8.16.1 Section 4.4 in 3550-8440-SP-0025 gives minimum clearances between welds.
8.17 Pump suction strainer
The type of strainers on the pump suction lines shall be as follows in accordance with
S-000-1360-0002V.:
 On suction lines size up to 2”: Y-Type
 On suction lines size above 2”: T-Type
9 CLEARANCES
Attachment 2 gives details of the more common forms of clearance required for operation
personnel and maintenance activities within a typical process plant. Clearances shall also be
maintained around other similar types of equipment in accordance with the intent of this standard.
10 ACCESS
Attachment 3 gives details of the facilities to be provided to gain access for operation and
maintenance. Access shall also be provided to similar items in accordance with the intent of this
standard.
11 FABRICATION
11.1.1 General Requirements for Pipe Fabrication shall be in accordance with
3550-8440-SP-0025.
11.1.2 Non metallic piping shall be fabricated and installed by appropriately qualified
subcontractors.
12 CLEANING
All piping that requires chemical cleaning and flushing shall be designed to avoid dead legs. If this
is unavoidable, a ¾”NB minimum cleaning connection shall be provided in each dead leg. In
addition, ¾”NB non-valved vents shall be provided as necessary to ensure all air pockets are
INDRA
21-MAY-2015

Employer Doc. No.
Rev. 1
Contractor Doc. No.
S-000-1360-0001V
Page 19 of 28
vented prior to chemical cleaning. Drain points for larger capacity lines shall be as Contractor
standard.
13 TESTING
Refer to 3550-8440-SP-0025.
INDRA
21-MAY-2015

Employer Doc. No.
Rev. 1
Contractor Doc. No.
S-000-1360-0001V
Page 20 of 28
14 INSULATION AND PAINTING
Refer to Project Specifications:
S-000-1390-0001V - Specification for Hot Insulation
S-000-1390-0002V - Specification for Cold Insulation
S-000-13A0-0001V - Specification for Painting
S-000-1360-0010V - Technical Specification for Wrapping Tape of Underground Pipe
INDRA
21-MAY-2015

Employer Doc. No.
Rev. 1
Contractor Doc. No.
S-000-1360-0001V
Page 21 of 28
ATTACHMENT 1 – PIPE SPACING
1. LINE SPACING
NOTES
1. Selection of shoe height for insulated pipe.
Insulation Thickness(mm) Shoe Height(mm)
Up to 75 100
76 to 100 150
101 to 150 200
151 to 200 250
201 and above Insulation Thickness + 50
(Minimum)
2. CLEARANCE FOR STAGGERED FLANGES
25mm MINIMUM
3. VALVE SPACING
100mm MINIMUM
Refer to
D-000-1360-0114V/0115V/0116V
(Standard Drawing Pipe Space).
SEE NOTE 1
INDRA
21-MAY-2015

Employer Doc. No.
Rev. 1
Contractor Doc. No.
S-000-1360-0001V
Page 22 of 28
ATTACHMENT 2 - MINIMUM CLEARANCE REQUIREMENTS
MINIMUM CLEARANCE REQUIREMENTS
ITEM DESCRIPTION MINIMUM
CLEARANCE (mm)
Roads Main unrestricted access roads:
Headroom
Width
Shoulder radius
Plant (on-plot access roads):
Headroom
Width (Primary)
Width (Secondary)
6000
8000
12000
4500
6000
4000
Railroad Headroom 6700
Personnel
Accessways
Main operating aisles:
Headroom
Width
Pedestrian walkway:
Headroom
Width
Stairways and ladders:
Width of stairway treads
Width of landing (in direction) of stairway
Maximum rise of stairway (1 flight)
Maximum rise of ladder(between
platforms)
2700
1000
2100
750
800
1000
4200 (vertical) Refer
to D-000-1330-1091V
(Standard Stair)
9000 for vertical
vessel platforms
6000 for others
Accessways under
Piperacks
Access required for vehicular equipment
Headroom
Width
Access required for portable (temporary) service
equipment
3650
3000
3050
INDRA
21-MAY-2015

Employer Doc. No.
Rev. 1
Contractor Doc. No.
S-000-1360-0001V
Page 23 of 28
ATTACHMENT 2 - MINIMUM CLEARANCE REQUIREMENTS (CONT)
MINIMUM CLEARANCE REQUIREMENT
ITEM DESCRIPTION MAINTENANCE
CLEARANCE (mm)
Horizontal shell
and tube
exchangers:
Clearance for tube withdrawal
Clearance for shell head removal
Clearance from exchanger flanges
Dismantling plus 3000
for tube bundle pulling
side.1500 for opposite
side.
Vertical shell and
tube exchangers:
Distance of platform below shell and
channel flanges
Width of platform from 3 sides of flanges
1200 to 1800
750
Vertical and
horizontal vessels:
Clearance between platform and flange on
side manways
Max distance between platform and center line of side
manway
Width of side platform from manhole cover
to platform edge
Width of side platform adjacent to
manway flange
Width of top platform from 3 sides of
manhole
Distance of top platform(Toe plate top) from underside
of flange
300
1200
900
450
750
2 times of nut height
Refer to
D-000-1360-0118V
(Typical Detail Tower
and Vertical Drum)
Pumps: Horizontal clearance around pump base plate
(exclude pump associated items such as suction,
discharge, fire water spray, local switch and etc.)
Operating aisle at driver end of pump
Clearance between platform and flange on
side nozzles
750
1500
150
INDRA
21-MAY-2015

Employer Doc. No.
Rev. 1
Contractor Doc. No.
S-000-1360-0001V
Page 24 of 28
ATTACHMENT 3 - MINIMUM ACCESS REQUIREMENTS
MINIMUM ACCESS REQUIREMENTS
Type of Access Item Being Accessed
Temporary ladder, mobile
steps,Temporary platforming
etc.
Flow pressure and temperature instrumentation mounted in lines up
to 4.6 m (Bop) above grade and up to 2.6 m (Bop) above main
structure platform levels.
Handholes up to and 3.75 m above grade and up to and 2.5 m above
main structure platform levels.
Root valves for sampling minimum from header
Utility header isolation valves (root valves) on branch lines from main
header or sub-header to users. Refer to Section 8.4.14 in
S-000-1225-0001V.
Permanent Ladder with Cage Valves 1½ " and smaller.
Instrument items below (the equipment shall be less than 1000mm
away from the centreline of the ladder in accordance with Section
4.3.3 in 3550-8550-SP-0011)
 Level gauge glasses (LG. not to pass through platform)
 Temperature and pressure instrumentation above the elevations
stated previously
Permanent platform with item
accessed form platform edge
i.e. a maximum of 500mm
from the platform edge and
1500mm above the platform
height.
Valves 2 " and larger
Fig '8' blinds 3 " and smaller
Sampling points
Handholes
Steam distribution manifold for steam trace and jacket
Instrument items below (the centre of the operating mechanism shall
be less than 500mm outside the handrail and be located between
150mm and 1500mm above platform level in accordance with
Section 4.3.2 in 3550-8550-SP-0011)
 Level controllers and switches
 Flow instrumentation above the elevation stated previously
INDRA
21-MAY-2015

Employer Doc. No.
Rev. 1
Contractor Doc. No.
S-000-1360-0001V
Page 25 of 28
ATTACHMENT 3 - MINIMUM ACCESS REQUIREMENTS(CONT)
Permanent platform with item
accessed from above and
inboard of platform.
Fig '8' blinds 4" larger and blinds spacers
Manholes/Manways
Heat exchanger units
Clean – out points
Catalyst loading flanges (NOTE)
Condensate loading manifolds for steam trace and jacket
Filters and Strainers
Instrument items below (the top of the operating mechanism shall be
located between 150mm and 2100mm above platform level in
accordance with Section 4.3.2 in 3550-8550-SP-0011)
 Relief valves 4”
 Motor operated valves
 Control Valves
Stairway
Ladder
Steel or concrete structure containing equipment, piping or valves
requiring access.
A secondary means of escape is to be provided when the distance to
the primary means escape exceeds 10 metres, ladder length not to
include 6 metres except in the case of vertical drums and towers, ref
Section 8.10
NOTE:
Include other similar considerations where platform access will be required for Equipment unloading/loading
operations during maintenance.
INDRA
21-MAY-2015

Employer Doc. No.
Rev. 1
Contractor Doc. No.
S-000-1360-0001V
Page 26 of 28
ATTACHMENT 4 - ELEVATION REQUIREMENTS
ELEVATION REQUIREMENTS
Elevations of Paving, Floors and Equipment
Elevation of flooring to be as follows:
High point of paving (Plant Datum)
Low point of paving (top of catch basins)
High point of finished floor in enclosed buildings in
paved areas
Open buildings in paved areas
All buildings in unpaved areas
Drain hubs top
Top of grout or underside of base plate to be as follows:
Centrifugal pumps
Reciprocating pumps
Vertical vessels with legs or skirt
Base of steel columns
Vertical vessels with legs or skirt installed in
concrete structures
Vertical vessels with legs or skirt installed in steel
structure
Skid mounted items
Tanks
NOTE: Allow 25mm shims (or grout) above steel (or
concrete). For vessels over 4500mm dia. allow 37 mm shims
(or grout).
Elevation = 100000mm
HPP minus 150mm
Refer to Section 8.4. in
S-000-1310-0001V(Detailed
Engineering Design Data for Civil
and Structure)
S-000-1310-0001V
S-000-1310-0001V
HPP plus 75mm
HPP plus 150mm
HPP plus 150mm
HPP plus 300mm
S-000-1310-0001V
Highpoint of flooring plus 25mm
grout
Steel elevation plus 25mm shims
HPP plus 300mm
HPP plus 300mm
INDRA
21-MAY-2015

NSRP Complex
CUTLINE
CUTLINE
Complex Project
900 MIN.CLEAR AT MANWAYS
ORIENTATE MANWAYS & LADDERS SO THAT
OPERATIONAL ACCESS CAN BE ACHIEVED WITHOUT
HAVING TO PASS THE MANWAY.
450 MIN.
1200 MAX.
900 MIN.
2000 MAX.
600 MIN.
CLEAR
PADS FOR PLATFORM
BRACKETS MUST CLEAR
CIRCUMFERENTIAL BEAMS
BUNDLE PULL AREAS
MUST BE KEPT CLEAR
380 MIN.CLEAR TO H.P.OF PAVING
MIN.CLEAR BETWEEN FOUNDATIONS 750
BUNDLE LENGTH
STD.NOZZLE PROJ.
FROM I.D.
NOZZLES TO & INCL.12"=200
NOZZLES 14"& OVER=250
ALL CONNS.
SHALL BE FLANGED EXCEPT
AS OTHERWISE STATED ON
DRAWINGS
UTILITY STATIONS
SKIRT OPENINGS ACCESS & VENTS
TOWER BASE DIMENSIONS
DAVITS (10B13.8)
MANWAY DAVITS (10B13.2)
DAVIT SUPPORTS (10B13.8)
MIN T.L. EL GIVEN
ON P.&I.D.s
(10B11.3)
(10B11.1)
ALL LADDERS TO SIDE STEP
ONTO PLATFORM
LIFTING TRUNNIONS (10B13.11)
SHELL & TUBE EXCHANGERS LINE
UP CHANNEL NOZZLES IF POSSIBLE
MAX. STRAIGHT RUN OF LADDER
9000 (CAGE REQUIRED AT 2100 ABOVE
PLATFORM OR GRADE)
Project
ATTACHMENT
2100MIN.
HEADROOM
2100MIN.
HEADROOM
2100MIN.
HEADROOM
750
300
560
2100
MAINT.AISLE AT
EXCH.BONNETS
1500 MIN.
NOT APPLICABLE TO THIS PROJECT
NT 5 – MODULAR PETROCHEMICAL PLANT LAYOUT
75 MIN CLEAR FROM TOP OF KICK PLATE
STEEL TO UNDERSIDE OF FLG
150 MIN.CLEAR
PUMP DISCHARGES
TO LINE UP IF PRACTICAL
LC TYPICAL CONTROL
SET LOCATION
DO NOT BLOCK
ACCESS TO PUMP
MOTOR.
2100
MIN.
OPEN GRID
1000
1100
2100MIN.
2100
MIN.
BACK OF PIPES
(UNINSULATED)
BACK OF PIPES
(INSULATED)
PETROCHEMICAL PLANT LAYOUT
UTIL.
STNS.
3650MIN.CLEAR.
MAINT.AISLE BELOW RACK
3000 MIN.
NOTE:-DOES NOT HAVE TO
BE IN STRAIGHT LINE
TYPICAL CONTROL
SET LOCATION
DO NOT BLOCK
ACCESS TO PUMP
MOTOR.
C FANL C FANL
OPEN GRID
FLOORING
OPEN GRID
FLOORING
CHEQ.
PLT.
PROCESS LEVEL
UTILITIES LEVEL
TOH.P.OFPAVING
FLARE AND OVERSPILL LEVEL
LIGHTING & CABLE TRAYS
1250 MIN.CLEAR AT BONNET ENDS
LIFTING LUGS (10B13.12)
VESSEL SUPPORT LEGS (13B12.1)
STAIRS 5000 MAX. VERTICAL
Employer Doc. No.
Contractor Doc. No.
S-000
PETROCHEMICAL PLANT LAYOUT
OPEN HUBS 75 ABOVE
PAVING
750 MIN.CLEAR
AT COLUMNS
1500 MIN.OPER.AISLE
AT DRIVER ENDS OF
PUMP
INSTS.& ELECTRICAL
CABLE TRAYS
1250 MIN.CLEAR AT BONNET ENDS
LIFTING LUGS (10B13.12)
VESSEL SUPPORT LEGS (13B12.1)
800 MIN.
STAIRS 5000 MAX. VERTICAL
UNBROKEN RISE
Employer Doc. No.
Contractor Doc. No.
000-1360-0001V
PETROCHEMICAL PLANT LAYOUT GUIDELINES
150 MIN.CLEAR
ELIMINATE ELBOW
WHERE POSSIBLE
STEEL SADDLES (13B11.1)
VESSEL SUPPT.LOCATIONS (13F11.1)
HIGH POINT OF PAVING EL.100000mm
750 MIN.WIDTH OF CONNECTING WALKWAYS
750 MIN.BETWEEN PAIRED EXCHANGERS
1250 MIN.CLEAR IN FRONT
OF EXCH.CHANNEL COVERS
NO PIPING TO EXTEND BEYOND
CHANNEL COVERS
230 MIN.CLEAR FOR CHANNEL REMOVAL
PROVIDE BREAK FLANGES IN CHANNEL
INLET AND OUTLET PIPING
PAVING THICKNESS 100 EXCEPT TRUCKING
AREAS TO BE 150 (3000 MIN.WIDTH OF
TRUCKING AREAS)
STEEL DRAIN HUB
SAMPLE COOLERS
FIREPROOFING
(TYP) IF REQD. (84A1)
TUBE BUNDLE PULLER
PIPE SUPPORT STDS. (59B50)
TOP OF MODULE BASEFRAME EL.99725
g:/piping/std/50a1at6.dgn
Rev. 1
Page 27 of 28
INDRA
21-MAY-2015

NSRP ComplexComplex Project
ATTACHME
Project
ATTACHMENT 6 – ‘STICK
Refer to D-000
(Typical Piping
‘STICK-BUILT’ PETROCHEMICAL PLANT LAYOUT
000-1360-0110V
iping Assembly P
BUILT’ PETROCHEMICAL PLANT LAYOUT
0110V
Plant Layout Guidelines)
Employer Doc. No.
Contractor Doc. No.
S-000
BUILT’ PETROCHEMICAL PLANT LAYOUT GUIDELINES
uidelines)
Employer Doc. No.
Contractor Doc. No.
000-1360-0001V
GUIDELINES
Rev. 1
Page 28 of 28
INDRA
21-MAY-2015

S 000-1360-0001 v-1_0001_general specification for piping

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