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Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
Volume No: II
Section No: 3.2
HRD-Process Platform Project No:
Page: 1 OF 34
FORMAT No. Ref. PROCEDURE No. ISSUE No. REV. No. REV. DATE: ODS/SOF/020B ODS/SOP/017 01 00 21.07.2010
PART IV
SECTION - 3.2
PROCESS DESIGN CRITERIA
OIL AND NATURAL GAS CORPORATION LIMITED
INDIA
AB BSW AKR
05.05.12 34 0
PREPARED
BY
CHECKED
BY
APPROVED BY
ISSUED FOR BID
DATE No. of
Pages
REV
Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
Volume No: II
Section No: 3.2
HRD-Process Platform Project No:
Page: 2 OF 34
FORMAT No. Ref. PROCEDURE No. ISSUE No. REV. No. REV. DATE: ODS/SOF/020B ODS/SOP/017 01 00 21.07.2010
TABLE OF CONTENTS
ANNEXURES
ANNEXURE-I WELL FLUID COMPOSITION (TYPICAL)
HEERA FIELD
ANNEXURE-II PRODUCED WATER ANALYSIS
ANNEXURE-III DIESEL FUEL SPECIFICATIONS
SECTION TITLE
3.2 INTRODUCTION
3.2.1 DESIGN CRITERIA HRD PROCESS PLATFORM
3.2.2 DESIGN CRITERIA FOR MODIFICATIONS ON
EXISTING HEERA COMPLEX (HRC, HRG, WIH)
3.2.3 DESIGN CRITERIA OF PRE-INSTALLED RISERS
3.2.4 DESIGN CRITERIA OF FUTURE EQUIPMENTS
3.2.5 INSTRUMENTATION AND CONTROL
3.2.6 SPARING PHILOSOPHY
3.2.7 UNITS OF MEASUREMENT
3.2.8 NUMBERING PHILOSPHY
3.2.9 CODES AND STANDARDS
Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
Volume No: II
Section No: 3.2
HRD-Process Platform Project No:
Page: 3 OF 34
FORMAT No. Ref. PROCEDURE No. ISSUE No. REV. No. REV. DATE: ODS/SOF/020B ODS/SOP/017 01 00 21.07.2010
3.2 INTRODUCTION This section of bid package defines design criteria for Process and Utility
systems required for HRD Process Platform (bridge connected to existing HRC
platform) under HRD Re-development (Phase-II) Project. Under this project, the
scope of work includes the following facilities:-
a) HRD Process Platform. Section 3.2.1 covers the design criteria for process
platform. b) Modifications at existing HEERA Process Complex (HRG/ H R C / WIH).
Section 3.2.2 covers the design criteria for various facilities and modifications
envisaged at HEERA HEERA Process Complex including bridge inter-
connection between existing HRC Process Platform and new HRD Process
Platform
GENERAL REQUIREMENTS
Contractor to note that this document provides the design criteria of various
process facilities and utilities envisaged in the project. Contractor to strictly
follow these criteria while designing various systems or units envisaged in the
project. However, the sizes, capacities etc. of various units specified in this
design criteria or specified elsewhere in the bid package shall be followed as
minimum requirement. In case of any discrepancy between various documents,
Contractor shall refer the same to the Company for resolution and proceed wi th
the i r design and engineering only after companys decision with no impact to
cost and schedule of the project.
The sizes, specifications and drawings furnished in bid document for various
facilities at HRD Process Platform and modifications at existing HEERA Process
Complex are indicative & minimum to be provided by the Contractor. It is the
Contractors responsibility to verify all the design/ data before proceeding for the
detailed design and engineering. Under the scope of this contract, Contractor
shall perform all necessary process simulation using HYSYS software (latest
version), design calculations and consider adequate design margins while
specifying equipment /instrumentations. Contractors responsibility also includes
carrying out safety studies and review operability aspects of the facilities and
incorporates findings of the same while designing the facilities. Any deviation
shall require Companys approval.
Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
Volume No: II
Section No: 3.2
HRD-Process Platform Project No:
Page: 4 OF 34
FORMAT No. Ref. PROCEDURE No. ISSUE No. REV. No. REV. DATE: ODS/SOF/020B ODS/SOP/017 01 00 21.07.2010
The process and utility flow diagrams and indicative P&ID s are enclosed
in the bid document. Contractor shall develop detailed process design basis, process
flow diagrams, material & energy balance, utility flow diagrams etc. for
different cases indicated in this criteria and design the process and utility
systems, accordingly. In case, simulation results show higher flow rates and
varying pressure/ temperature ranges for some applications, the more conservative
figures/ ranges shall be used for design and no. of process vessels/ equipment
required under intended operations shall be so decided within the scope of this
contract. Contractor may seek clarifications, if required any, during detailed
engineering. The design of process and associated utility systems for HRD
process platform and modifications at existing HEERA complex shall be
suitably designed for these higher flow rates/ ranges. Accordingly, Contractor shall
develop detailed utility balance and utility flow diagrams.
Contractor shall develop detailed Piping and Instrumentation Diagrams, Cause &
Effect Diagrams, SAFE charts etc. incorporating all suppliers information.
Contractor shall prepare data sheets and specifications for all the equipment,
instruments etc. Sufficient margins shall be taken on operating parameters viz.
pressure/ pressure drop, temperature, flow, level etc. to take care of complete
operating range and any other unforeseen eventualities. Contractor shall ensure that P&IDs shall include all required instrumentation
for local as well as for remote monitoring and control of critical process
parameters (including but not limited to pressure, temp., flow, level etc.).
Additional instrumentation, if required based upon HAZOP study as well as
operational requirement, shall be provided without any time and cost impact to
the Company.
Contractor shall develop sizes / routing / distribution of various utilities (namely
Vent/ HP flare/ LP flare, Open/ Closed Hydrocarbon Drain, Open Deck Drain,
Diesel, Instrument/ Utility/ Starting Air, Fire water, Utility water, Potable
water, Cooling water, Inert gas, Chemicals etc.) and finalize the same during
detail engineering.
Contractor shall ensure that the design of process platform shall meet the relevant
codes and standards requirements. A typical list of applicable codes is
included in this Bid Package. This, however, cannot be taken as an exhaustive
list and various codes and standards as mentioned in functional
specifications as well as those applicable as per good engineering
practices shall also form the basis and shall have to be followed by the
Contractor in consultation with Company/ Companys engineering consultant.
Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
Volume No: II
Section No: 3.2
HRD-Process Platform Project No:
Page: 5 OF 34
FORMAT No. Ref. PROCEDURE No. ISSUE No. REV. No. REV. DATE: ODS/SOF/020B ODS/SOP/017 01 00 21.07.2010
The various process and utility system hook-ups indicated under bridge inter-
connections, between existing HRC platform and HRD platform are minimum
indicative. It shall be the Contractors responsibility to get familiar with the
existing process/ utility lines/ headers on HRC/ HRG platform, during pre-
engineering survey (topside modifications) in order to ascertain the extent
and completeness of work to be carried out for hook- up, extension and routing of
such lines/ headers up to new bridge and their further hook-up with corresponding
lines/ headers on HRD platform through bridge inter-connections.
Contractor , during pre-engineering survey (topside modifications) of HEERA
complex, shall also assess/ verify the deck space, hook-up points, routing of the
lines, necessary inter-connections through bridge, integration with existing facilities
etc. and finalize all essential aspects of modifications. Wherever as-built
drawings of e x i s t i n g facilities are n o t a v a i l a b l e , Contractor shall
develop the existing drawings relevant for the intended modifications to an as-built
status for the detailed engineering. Since the existing HEERA complex will be operational, the Contractor shall
develop detailed procedures for carrying out modification works and shall design/
plan his works such that hot work and platform shutdown requirements are
eliminated or reduced to bare minimum. Adequate care shall be exercised while
developing the existing process platforms modification requirements with special
emphasis towards safety, operability and hook-ups. Special attention shall be
given to minimize the shut down time required at existing process platforms and
safety for executing the modifications.
All the process, utility, safety and instrumentation systems shall meet the
requirements of API-RP-14C Recommended Practice for Analysis, Design,
Installation and Testing of Basic Surface Safety Systems on Offshore
Production Platforms Latest Edition.
Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
Volume No: II
Section No: 3.2
HRD-Process Platform Project No:
Page: 6 OF 34
FORMAT No. Ref. PROCEDURE No. ISSUE No. REV. No. REV. DATE: ODS/SOF/020B ODS/SOP/017 01 00 21.07.2010
Contractor shall submit reports/ documents/ calculations/ drawings as per the list
given below for Companys review and approval. Contractor to note that this is a
typical list and shall be supplemented with additional detail engineering
documents as felt necessary by the Company, during detail engineering:-
- Pre-engineering Survey Report (Topside Modifications)
- Process & utility design basis
- Process & utility description
- Process simulation report
- PFDs / UFDs/ P&IDs (1st submission & subsequent
revisions)
- Process and utility calculation report (*)
- CFD Report of all the major process flows/ vessels
- Process control philosophy
- Black start philosophy
- Isolation philosophy
- Blow down calculation report
- Flare load calculation report
- Vent dispersion analysis report
- Equipment list
- Tie-in schedule
- Alarm & trip schedule
- Process Data Sheets - Equipment
- Process Data Sheets Instruments
- Cause & effect chart
- SAFE chart
- Line list
- Operating manual etc.
(*) Process and utility calculation report shall include
sizing calculations for process/ utility piping, equipments/ vessels,
safety/ relief valves, control valves, choke valves, orifice
plates etc.
However, sizing of equipment/ instruments for which vendors
information are required, preliminary calculations shall be
submitted initially. Subsequently, same shall be updated by the
Contractor based upon vendors information and shall be re-
submitted for Companys review and approval. Also, hydraulic
calculations shall be updated based on final routing/ layout etc.
as per actual piping isometrics, and re-submitted for
Companys review and approval.
Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
Volume No: II
Section No: 3.2
HRD-Process Platform Project No:
Page: 7 OF 34
FORMAT No. Ref. PROCEDURE No. ISSUE No. REV. No. REV. DATE: ODS/SOF/020B ODS/SOP/017 01 00 21.07.2010
Contractor shall submit soft copy (including EXCEL sheets
indicating mathematical correlations) of sizing calculations for
review of results indicated in calculation report.
Detailed CFD analysis shall be carried out for all the Process
vessels, systems and PGCs during the design as well as
manufacturing phase and the due results shall be submitted to
ONGC.
Contractor to note that based upon review and approval of aforesaid
calculations/ documents/ drawings only, P&IDs shall be Approved
For Construction (AFC).
Engineering shall also be done for all specified future facilities
wherever required.
HAZOP STUDY Based upon review and approval of aforesaid reports/ documents/ calculation/
drawings etc., P&IDs shall be issued for HAZOP study. Contractor shall
engage an internationally reputed third party agency for carrying out HAZOP
study. The venue and timing of HAZOP workshop shall be finalized
through mutual consent between Contractor and the Company. The HAZOP
observations/ recommendations shal l be deliberated in presence of/ with
Companys representatives/ Operations representative/ Engineering
consultant. The firmed-up HAZOP recommendations shall be incorporated
in relevant doc./ drgs. and after their approval, P&IDs shall be issued for
Approved for Construction (AFC).
Contractor to note that all changes arising due to HAZOP study shall be
considered and incorporated as part of firm scope of this contract without
any time and cost impact to the Company. Also, any changes arising due to
Companys review / approval, for whatsoever reason shall be
implemented in the design of the facilities under the scope of this contract
without any time and cost impact to the Company.
DOCUMENTATION
The Contractor shall submit all the documentation as per requirements
given elsewhere in the bid document. In addition, Contractor shall prepare
process packages and submit to the Company & their Consultant, within
one month of approval of these documents. The process package shall
consist of the following documents:
Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
Volume No: II
Section No: 3.2
HRD-Process Platform Project No:
Page: 8 OF 34
FORMAT No. Ref. PROCEDURE No. ISSUE No. REV. No. REV. DATE: ODS/SOF/020B ODS/SOP/017 01 00 21.07.2010
- Design basis (with approved deviations, if any)
- AFC P&IDs /Suppliers P&IDs (A3 size & bound
together)
- AFC Equipment lay-outs (A0 &A3 size & bound
together)
- PFDs & UFDs including Heat and material balance.
- Cause and Effect Diagram
- SAFE Charts
- Data sheet for Equipment
- Data sheet for Instruments
- Line list
- Equipment list
- All process /sizing calculations
- CFD Report of all the major process flows/ vessels
- Operating manual
- Vendor Document/ Literature
3.2.1 DESIGN CRITERIA HRD PROCESS PLATFORM
3.2.1.1 DESIGN LIFE: 25 years
3.2.1.2 PLATFORM LOCATION: Refer Structural Design Criteria Part
- II
3.2.1.3 SOURCE OF WELL FLUID : Additional well fluid from HP,HK
AND HSD well platforms (from
extended production manifold at
HRC through HRC- HRD bridge
inter-connection)
3.2.1.4 DESTINATION OF OIL
(AFTER HP SEPARATOR): HRC Oil manifold (through
HRD-HRC
interconnection)
3.2.1.5 DESTINATION OF GAS
(AFTER COMPRESSION): HRC-HRG net gas header on HRG
(through HRD- HRC inter-
connection
3.2.1.6 DESTINATION OF PDODUCED WATER
(AFTER HP SEPARATION): HRC-HRG produced water header on
HRC platform (through HRD-
HRC inter-connection).
25 years
Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
Volume No: II
Section No: 3.2
HRD-Process Platform Project No:
Page: 9 OF 34
FORMAT No. Ref. PROCEDURE No. ISSUE No. REV. No. REV. DATE: ODS/SOF/020B ODS/SOP/017 01 00 21.07.2010
3.2.1.7 PROCESS DESCRIPTION
Well fluid from HP,HK and HSD well platforms via existing HRC production
manifold shall be received at HRD plat form through HRC-HRD bridge
interconnection at operating pressure 8 16 kg/cm2g.
The well fluid received at HRD Process Platform shall be first routed
to the three phase cyclone separator with a provision to bypass the same.Then the
WF is diverted to the well fluid heaters using hot oil and shall be heated from 210C
to 600
C and then shall be routed to the new 3 Phase HP separators (with in-built
electrostatic coalescer) maintained at operating pressure range 7.5 -12 kg/cm2g.
Gas from 3-Phase Cyclone separator shall be routed to compressor inlet manifold
and liquid shall be routed for further processing at existing platform of HRC and
HRG.
Oil s t r e am from 3-Phase HP separator shall be sent to a location o n H R C
p l a t f o r m a n d b e h o o k e d u p t o t h e o i l o u t l e t l i n e a t t h e
d o w n s t r e a m o f H P s e p a r a t o r o n H R C p l a t f o r m . (through HRC-
HRD bridge inter- connections). This partially stabilized oil shall combine with
the crude oil from other sources and flow to the surge tanks at HRG and HRA for
further separation and stabilization and subsequent pumping.
Separated water (from HP Separator) shall be routed to the HRC platform and shall
be connected to the produced water line at the outlet of the HP separator located at
HRC platform via HRD-HRC Bridge,which shall be transported ultimately to HRG
platform via HRC-HRG bridge up to the HRG produced water treatment system.
The interconnection with produced water header is to be provided at HRC platform.
A typical heat and mass balance is enclosed in bidding documents. Contractor
shall, however, review the operating pressure range for w e l l fluid heater and
HP separator based upon vendor data and carry out heat and mass balance for all
the possible cases.
The operation of PG compressors shall be facilitated through load sharing and
capacity controls incorporated into the compressor skid control system. The new
PG compressor shall be linked to the existing PG compressors on HRC as well
as HRG platform via suction and discharge header. In normal operation, 6 nos.
compressors (2 at HRC and 3 at HRG and 1 at HRD) will run in parallel
maintaining 6 operating and one standby philosophy. If required, all 6 nos.
compressors (including the new two at HRD) may also run in parallel.
Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
Volume No: II
Section No: 3.2
HRD-Process Platform Project No:
Page: 10 OF 34
FORMAT No. Ref. PROCEDURE No. ISSUE No. REV. No. REV. DATE: ODS/SOF/020B ODS/SOP/017 01 00 21.07.2010
Gas will be compressed by the process gas compressor (PGC) up to 95 kg/cm2g
followed with processing by the dehydration unit in HRG. A scrubber shall be
provided on the discharge of PGC (after 3rd
stage cooler) to prevent hydrocarbon
liquid carryover from the compression train o n H R D to dehydration unit on
HRG platforms respectively. G a s from HRD shall then be routed across the
HRD-HRC and HRC-HRG bridge to mix with the compressed gas from the
existing facility and then to the dehydration system of the exist ing platform
- HRG. The outlet l ine of the compressors shall be routed up to the
HRG platform and shall be connected to the outlet manifold of the
compressors on the HRG platform.
All necessary process and utility inter-connections shall be made through HRC-
HRD bridge. Provision shall also be made to use gas separation, compression
facilities of existing HEERA complex and HRD Process Platform from
either of the platforms. The process inter-connections between HRD and HRC
shall include but not be limited to hook-up of production manifolds,
separated oil and produced water, compressor suction headers, compressor
discharge headers . For utility inter-connections, refer Design Criteria Utilities.
3.2.1.7 DESIGN CRITERIA PROCESS EQIPMENTS AND SYSTEM
3.2.1.7.1 PRODUCTION H E A D E R / MANIFOLD
No Production manifold has been envisaged at HRD platform. However, the
production manifold of HRC platform shall be extended through the bridge of
HRC-HRD and shall be routed up to the inlet of the De-sander and the
wellfluid heater and then the HP separator. There shall be a flushing
connection on extended inlet line. Also the line should hot insulated.
The extended production header will be designed based on the following:-
Operating pressure, kg/cm2g : 8 16
Design pressure, kg/cm2g : 94.0
Operating temperature, 0C : 21 60.
Design temperature, 0C : 75.
DESIGN CRITERIA PROCESS EQIPMENTS AND SYSTEM
Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
Volume No: II
Section No: 3.2
HRD-Process Platform Project No:
Page: 11 OF 34
FORMAT No. Ref. PROCEDURE No. ISSUE No. REV. No. REV. DATE: ODS/SOF/020B ODS/SOP/017 01 00 21.07.2010
3.2.1.7.2 THREE PHASE CYCLONE SEPARATOR
One no. Three Phase Cyclone Separator shall be provided in the upstream of
W.F. heater. The well fluid shall be de-gassed in a centrifugal type 3-Ph.
Cyclone Separator.
The 3-Phase Cyclone Separator will be designed based on the following:-
Operating pressure, kg/cm2g : 8 16
Design pressure, kg/cm2g : 94.0
Operating temperature, 0C : 21 60.
Design temperature, 0C : 75.
The provision shall also be kept for bypassing it, if required .
The cyclone separators are vertical vessels designed for 3 phase separation,
primarily meant to knock-out gas from liquid and to drain the free water
present in the fluid. This will be designed based on
the following
a) Operating conditions :
- Pressure, kg/cm2g : 8.0 (Min.)
: 16.0 (Max.).
- Temperature, 0C : 21 - 60
b) Design conditions :
- Pressure, kg/cm2g : 94.0
- Temperature, 0C : 75.0
c) Flow rates (per unit)
- Liquid, BLPD : 55000
- Gas, MMSCMD : 2.0
d) Surge factor : 25% of the maximum well fluid
e) Swell factor : 15 % Minimum
f) Maximum allowable : 13.4 Lit/MMSCM. Liquid Particle size in gas
carry over liquid in gas shall not be more than 10 microns.
g) Well fluid composition : Refer ANNEXURE
centrifugal type 3-Ph.
Cyclone Separator.
Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
Volume No: II
Section No: 3.2
HRD-Process Platform Project No:
Page: 12 OF 34
FORMAT No. Ref. PROCEDURE No. ISSUE No. REV. No. REV. DATE: ODS/SOF/020B ODS/SOP/017 01 00 21.07.2010
3.2.1.7.3 WELL FLUID HEATERS
The well fluid heaters are shell and tube type heat exchangers. The crude oil/
water emulsion is passed through the tube side and heated by hot oil on the
shell side. This temperature increase of the process fluid promotes the break
down of the emulsion, thereby permitting downstream separation of the water
phase.
The well fluid heater will be designed based on the following:
Heating medium: Hot oil
Heating requirement: To heat well fluid from 210C (MIN) to 60
0C(MAX.)
Max. temp. heating medium(Hot oil ): 2500C .
Min. temp. heating medium(Hot oil ): 1500C.
3.2.1.7.4 HP SEPARATORS
The HP Separators are horizontal vessels (with in-built electrostatic
coalescer) designed for 3 phase separation of oil-gas-water by static
electricity induced gravity settling. These will be designed based on the
following:-
a) Operating conditions :
- Pressure, kg/cm2g : 7.5 (Normal)
: 12 (Max.).
- Temperature, 0C : 30-60
b) Design conditions :
- Pressure, kg/cm2g : 21.1
- Temperature, 0
C :104.0
c) Flow rates:
Oil (BOPD) Water
(BWPD)
Liquid (BLPD) Gas
(MMSCMD)
Maximum oil
case
20000 35000 55000 2.0
Maximum
water case
5000 50000 55000 2.0
Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
Volume No: II
Section No: 3.2
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d) Residence time : Min 5 minutes for oil and water
phase on maximum flow including
surge & swell factor
e) Maximum allowable : Centre line of vessel liquid level
f) Allowable quantity of : 200 ppm ( V/V) max. oil in water
g) Allowable quantity of : 1% ( V/V) max. water in oil
h) Maximum allowable : 13.4 Lit/MMSCM.
carry over liquid in gas Liquid Particle size in gas
shall not be more than 10
microns i) Well fluid composition : Refer ANNEXURE-I
3.2.1.7.5 PROCESS GAS COMPRESSOR
The process gas compressor takes suction from compressor Inlet
Manifold on HRD platform and which is also interconnected to the
compressor inlet manifold at HRC platform through HRD-HRC bridge
inter-connection and delivers compressed gas to Discharge Manifold which
is connected to compressed gas manifold at HRC through HRD-HRC
bridge inter-connection. The process gas compressor will be designed based on the following
i) No. of trains: 2 no. (1W+1S)
ii) Flow:
- Max. : 1.6 MMSCMD (dry basis)
- Rated : 1.6 MMSCMD (dry basis)
iii) Molecular Weight (*):
- Max. : 23.5 (dry basis)
- Min. : 20.5 (dry basis)
(*) In case, simulation results show wider range, highest
and lowest out of above and simulation results whichever
are governing, shall be considered.
Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
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iv) Pressure (at module battery limit):
- Suction, kg/cm2g : 6.0 8.0
- Discharge, kg/cm2g : 95.0
v) Temperature (at module battery limit)
- Suction, 0C : 30 - 60
- Discharge, 0C :54
vi) Type : Centrifugal (Dry gas seal type)
vii) Driver : Gas turbine
The gas shall be considered as saturated with water vapour at
operating conditions of HP separator.
Compressor package vendors scope shall include self-contained compressor
skid having 1st stage, 2nd stage and 3rd stage compressor suction
scrubber, inter- coolers, after-cooler, 3rd stage discharge scrubber, dedicated fuel gas conditioning unit, metering system, surge and speed
controls, lube and seal oil system, local panel, unit control panels (located in central control room) and other utility and auxiliary systems. The fuel
gas conditioning skid will consist as a minimum, suitable filters (specification to be decided by turbine vendor) and electric super heater designed to give a
minimum super heat of 20 0C.
Pressure and temperature at intermediate compressor stages indicated in the
heat and mass balance is indicative. Contractor shall finalize the same in
consultation with compressor vendor.
The design pressure of suction side of compressor shall be maximum of the
followings:
i) Bid package specification
ii) 110% of highest operating pressure
iii) 1 kg/cm2 above the settle-out pressure.
Compressor package vendors scope shall include self-contained compressor
skid having 1st stage, 2nd stage and 3rd stage compressor suction
scrubber, inter- coolers, after-cooler, 3rd stage discharge scrubber, dedicated fuel gas conditioning unit, metering system, surge and speed
controls, lube and seal oil system, local panel, unit control panels (locatedin central control room) and other utility and auxiliary systems. The fuel
gas conditioning skid will consist as a minimum, suitable filters (specificationto be decided by turbine vendor) and electric super heater designed to give a
minimum super heat of 20 0C.
Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
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Section No: 3.2
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FORMAT No. Ref. PROCEDURE No. ISSUE No. REV. No. REV. DATE: ODS/SOF/020B ODS/SOP/017 01 00 21.07.2010
The facilities of HP gas compressor system shall be designed for the performance under all environmental conditions as given in the enclosed environmental data. The air cooler shall be designed for cooling gas for 14 0C approach to maximum ambient temperature of 40 0C.
The FG Skid as well as the L/O Cooler for individual compressors shall be
considered to be the part of compressor module.
Equipments exposed to process fluids shall be designed conforming to
NACE MR-01-75.
3.2.1.7.6 GAS DEHYDRATION & GLYCOL RE-GENERATION SYSTEM
The dehydration and glycol regeneration system is not part of the present scope
of this tender. However, for dehydrating the compressed gas from the new
compressors at HRD, the feed from compressor discharge header shall be
merged with the common discharge header on HRG. This shall be done
through the extension of the discharge header on HRD platform up to HRC
and then up to HRG platform through bridge inter-connections respectively.
Equipments exposed to process fluids shall be designed conforming to
NACE MR-01-75.
3.2.1.7.7 PRODUCED WATER CONDITIONING SYSTEM
Produced conditioning system is not part of the scope of present tender.
However, for processing, the 35000 BWPD of Produced water from the new
separator it has to be sent to PWC s -1 unit at HRC and 2 units of HRG
platforms. The produced water outlet line from the outlet of the new separator
on HRD platform, shall be extended and hooked up to the produced water line
at HRC, outlet line of the PW of HP separator on HRC. The related piping,
instrumentation modifications are also included along with in the tie ins.
However the future space shall be provided on HRD platform for a new future
PWC of 100, 000 BWPD Capacity, as shown in the EQ. Layout diagram as
well as mentioned in other parts of the bid package.
Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
Volume No: II
Section No: 3.2
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3.2.1.8 DESIGN CRITERIA UTILITIES
3.2.1.8.1 ELECTRICAL GENERATION FACILITIES
Main power generation unit (TG) not envisaged at HRD Process Platform .
However, all electrical power requirements for auxiliaries as well as prime
movers and lighting loads at HRD shall be met from the excess power available
in the HEERA Complex which shall be brought via cables (HT and LT) via
HRC-HRD interconnection bridge.
An Emergency Gener a to r of 1.2 MW capacity shall be provided on HRD.
The capacity is based on the load and governed by the electr ical
scope of work and design cri teria.
3.2.1.8.2 FLARE AND VENT SYSTEM
The HEERA Process Complex has three waste gas collection systems.
These are HP flare system, LP flare system and vent collection system.
The HP, LP of the new HRD Process Platform shall be integrated with
existing complex . The main header of the HP and LP flare header shall be
extended up to the main complex via HRD-HRC bridge and shall be
connected to the main header at an appropriate point in the upstream of the
respective Flare KODs. The HP flare system at HRD w i l l collect high pressure flare gas which
i s to r o u t e t o HP Flare header on HRC platform. HP flare gas header
shall be hooked up with HP flare H e a d e r o n H R C p l a t f o r m . T h e
H P f l a r e l i n e i s t o p a s s through HRD-HRC bridge inter-connection.
The LP flare system collects low pressure gas which flows to LP K.O.
Drum for separation of liquid carry over. LP flare gas h e a d e r is t o b e
h o o k e d u p w i t h t h e L P f l a r e h e a d e r a t H R C , through HRC
HRD bridge inter-connection.
The vent collection system collects vent gas which is routed to the vent
scrubber followed by a glycol seal drum before flowing into atmosphere via
the independent vent line on the new HRD platform. The vent boom shall be
located at a suitable position and safe location.
Main power generation unit (TG) not envisaged at HRD Process Platform .
An Emergency Gener a to r of 1.2 MW capacity shall be provided on HRD.
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The HP and LP flare systems are t o b e continuously purged with fuel
gas at each dead end to assure a continuous flow through all headers.
Further, the HP and LP flare headers to respective flare headers shall be
provided with ultrasonic flow meters covering overall flare gas flow rates
based on simulation and including design margins.
The flare and vent system will be designed based on the following
HP Flare:
i) Header pipe dia.,inch : 20 (Min.) .
ii) Max. back pressure, : 3.5 (NOTE-1) Kg/cm2.
LP Flare
i) Header pipe dia.,inch : 16 (Min.) .
ii) Max. back pressure, : 0.2 (NOTE-1) kg/cm2g
Vent Header
i) Header pipe dia.,inch : 10 (Min.) .
NOTE-1 Max. back-pressure for flare at existing HRC
platform. However, new flare system at HRD shall be
designed for back pressure considering its integration with
existing flare system at HEERA complex.
Flare system shall be designed for the following radiation level at the
nearest process platform including HRD platform including solar radiation
of 250 Btu/hr ft2
Continuous (Normal ) : 400 Btu/hr ft2
Emergency (Peak) : 1500 Btu/hr ft2
The Flare piping network (piping including the header) on HRD shall be
designed for new facilities only, However as the flare system shall be
integrated with Heera complex as a whole. Thus, the changing the existing
flare tip to the sonic tip will form the scope of present tender. The flare system
and the Sonic flare Tip shall be designed for minimum load (purging),
continuous load (compressor not available i.e. associated gas loads-
Maximum up to 7.5 MMSCMD) and peak load (i.e. 5/6 nos. operating
compressors capacity + blow down requirements).
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3.2.1.8.3 FUELGAS SYSTEM
The fuel gas conditioning system is designed to meet requirements of the
following as a minimum Process gas compressor, HP and LP flare header
purge. The fuel gas header shall be hooked up with existing fuel gas
header at HRC platform through HRC-HRD bridge inter- connection.
Dehydrated gas from HRC platform shall be used as source of fuel gas
conditioning system.
Operating pressure : 30.0 Kg/cm2g
The Fuel gas shall be re-conditioned f o r the gas turbines of p r o c e s s gas
compressor in accordance with the recommendations of the compressor
manufacturer.
FG skids for individual compressors shall be considered as a part of
compressor modules.
3.2.1.8.4 DIESEL FUEL SYSTEM
The diesel fuel system is designed to meet requirements of the following as
a minimum Pedestal cranes ; Start-up air compressor ; Fire water pump ;
Emergency generator. The diesel fuel header shall also be hooked up with
existing diesel fuel header at HRC platform through HRCHRD bridge
inter- connection.
The diesel fuel system shall consists of the following Diesel inlet filter,
Diesel centrifuge, Diesel storage tank and Diesel transfer pumps.
Diesel inlet filter (one no.)
Particle removal size, : 99.99% removal of 0.8 micron and larger microns
Pressure drop, kg/cm2g : 0.3 (dirty)
Diesel Centrifuge (one no.)
Water in diesel, : 50ppm by wt.
The fuel gas conditioning system is designed to meet requirements of the
following as a minimum Process gas compressor, HP and LP flare header
purge.
3.2.1.8.4 DIESEL FUEL SYSTEM
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Diesel transfer
pumps
Nos. : 2 nos. (1 operating +1 standby)
Pump Capacity : 10 M3/ hr.
Diesel quality : Refer ANNEXURE-II
Diesel storage shall be provided in crane pedestal. Storage volume is
intended to meet the requirement of the following:-
24 hours supply for running fire water pump and emergency
generator plus 48 hours running of one deck crane.
Additional day-tanks for diesel storage shall also be provided for fire
water pump, emergency generator, deck cranes etc.
3.2.1.8.5 INSTRUMENT AND UTILITY AIR SYSTEM
The instrument and utility air system is designed to meet requirements of
the following as a minimum Pedestal cranes ; Starting air receivers,
Hypochlorite generator , instrument air etc.
The instrument and utility air shall consists of 2 nos. Air compressors.
The air stream from the compressors is scrubbed in the Utility air receiver
and then split into two streams one, to utility air header for onward
distribution and other, to air dryers (consisting of pre-filters, dryers and
after filters) followed with instrument air header for onward distribution.
The instrument and utility air system will be designed based on the
following:
Air compressors
Nos.: 2 nos. (1 operating +1 standby)
Air capacity (Dry): 700 (min.) Nm3/hr.
Discharge pressure: 11.4 Kg/cm2g
Type: Motor driven non-lubricating type screw
compressor.
INSTRUMENT AND UTILITY AIR SYSTEM
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Instrument air dryers
These shall consists of pre-filters, dryers and after filters.
Nos.: 2 nos. (1 operating + 1 standby)
Instrument air dew point: (-) 40 0C
Operating pressure: 11.4 Kg/cm2g
Utility air receiver
Capacity: 30 minutes operation
Operating Pressure: 10.0 Kg/cm2g
Instrument air receiver
Capacity: 30 minutes operation of all air consuming
instruments
Instrument air header: To supply instrument gas to all consumers
Operating Pressure: 7.5 8.2 Kg/cm2g
The instrument and utility air headers shall also be hooked up
with respective headers at HRC platform through HRD-HRC bridge
inter- connection.
3.2.1.8.6 STARTING AIR SYSTEM
The starting air system is designed to meet starting requirement of fire
water pump and emergency generator. It consists of start-up air
compressor, fire water pump starting air receiver and
emergency generator starting air receiver.
The starting air system will be designed based on the following:
Start-up air compressor:
Nos.: One no.
Air capacity (Dry): 35 (min.) Nm3/hr.
Discharge pressure: 17.6 Kg/cm2g
Type: Diesel engine driven reciprocating compressor.
STARTING AIR SYSTEM
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3.2.1.8.7 INERT GAS SYSTEM
The inert gas is primarily required for providing dry gas seal as well as
use in purging and blanketing of various systems and other
miscellaneous requirements, if any. The system shall have its own air
compressor to meet its input air requirement.
The inert gas system will be designed based on the following:
Nos.: 1 no (1X100 %)
Gas generated: Nitrogen
Capacity per unit: 150 (min.) Nm3/hr.
Dew point, C: (-) 40
Discharge Pressure 4.0 - 7.0 kg/cm2g
Discharge Temp, C: 43
Purity, %: 99 (min.)
Type of Adsorber : Membrane type
The inert gas header at HRD platform shall be extended to HRC and
HRG platform through HRC-HRD and HRC-HRG bridge inter-
connections for meeting the inert gas requirement. Isolation valves
along with blind flange, shall be provided at HRC and HRG platforms
for necessary hook-ups.
The N2 system shall also include N2 filter, N2 receiver and N2 cylinder
cubicle separately.
3.2.1.8.8 CHEMICAL STORAGE AND INJECTION SYSTEM
There are three chemical systems for HRD platform. These
systems include oil corrosion inhibitor (OCI) and gas corrosion
inhibitor (GCI) shall be dosed at the new platform of HRD, and
demulsifier shall be dosed at HRC platform.
INERT GAS SYSTEM
CHEMICAL STORAGE AND INJECTION SYSTEM
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As a minimum chemical storage and injection facility shall consist
the following:
Facilities shall be suitable for chemicals available from at least two
manufacturers for each type of chemical.
Mixing, heating & blanketing facilities etc shall be provided as per
chemical manufacturers specification/ Operational requirement.
Chemicals chosen shall be compatible with each other and with well
fluids / process stream / formation water as applicable.
All chemicals will be stored in full strength in storage tanks based on 15
days requirement at normal rates.
Drums equivalent to 15 days normal consumption of each chemical
shall be stored in the open. A suitable shelter shall be provided over the
drum storage area as required to protect the chemicals from direct
exposure to sun light (As per manufacturers recommendation).
Two drum racks, each for 4 drums (min.) shall be provided for
unloading of chemicals into respective tanks. All drum handling
will be mechanized. Portable pneumatic pumps (one for each chemical)
shall be provided for unloading drums into respective tanks.
Eye wash plus safety shower shall be provided near the storage tanks
and drum handling area (one each).
Suitable dosing pumps - one operating and one standby as minimum
shall be provided for each chemical. Dosing Pumps shall be sized to
meet required dosing rates .
Dosing rates and chemical type are tentative and shall be confirmed
during detailed engineering as per chemical manufacturers
recommendation. Chemical treatment package design shall take care
of this requirement.
CHEMICAL DOSING RATES
Following indicative dosing rates for various chemicals are given
below. These rates are to be confirmed during detailed engineering
as per chemical manufacturers recommendation
1) OCI 60 ppm at each injection point.
2) GCI 16.7 L/ MMSCM at each injection point
3) DEMULSIFIER 300 ppm based on maximum incoming
fluid flow
Eye wash plus safety shower shall be provided near the storage tanks
and drum handling area (one each).
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LOCATION OF CHEMICAL INJECTION
Oil Corrosion Inhibitor
It shall be injected in the oil header upstream and/ or downstream of the
HP separator as is appropriate to the inhibitor system selected. Hence it
is to be dosed on at new HRD platform
Gas Corrosion Inhibitor
It shall be injected upstream of the 1st, 2nd and 3rd stage coolers on
the process gas compression system.
Demulsifier
It shall be injected to the production headers upstream of the respective
well fluid heaters. Hence it is to be injected at HRC platform.
CHEMICAL NAMES
1) OCI Corexit 7730 or equivalent
2). GCI Corexit 7730 or equivalent
3) DEMULSIFIER Diatrolite DE 220 or equivalent .
3.2.1.8.10 UTILITY WATER SYSTEM
The utility water system is designed to meet requirements of
hypochlorite generation, potable water, cooling water, fire water header
(for pressurization) as a minimum. The utility water header shall also
be hooked up with respective header at HRC platform through HRC-
HRD bridge inter-connection.
The utility water system will consist of 2 nos of submersible utility
water pumps. Pump discharge pressure shall be 10.6 kg/cm2g.
The potable water system consists of potable water tank and potable
water pump and it shall be hooked-up with HRC platform through
HRC-HRD bridge inter-connection. The potable water shall be
supplied from HRC potable water header through HRC-HRD bridge
inter-connection.
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The cooling water system consists of cooling water tank, cooling water
circulation pumps and cooling water cooler. It shall include an on-
line filter, chemical injection facilities for maintaining pH of the water,
and an injection system for scale inhibitor. The cooling water header
shall also be hooked up with respective header at HRC PLATFORM
through HRD-HRC bridge inter-connection.
The cooling water system will be designed based on the following:
Cooling water circulation pumps:
Nos.: 2 nos. (One operating + one standby)
Pump diff. pressure: 5.0 Kg/cm2g
Cooling water inlet supply temp. : 50.0 0C
Cooling water outlet temp. : 60.0 0C
3.2.1.8.11 DRAIN SYSTEM
The drain system consists of open deck drain (ODD), open hydrocarbon
drain (OHD) and closed hydrocarbon drain (CHD) for collection of
hydrocarbon, chemicals and water.
Open deck drain (ODD) is meant for collection of the following:-
a) Storm water not in contact with hydrocarbon
b) Deluge and fire water
c) Utility water, potable water etc. spilled during cleaning
and maintenance.
Open deck drain system shall be designed for collection of rainwater
considering heaviest monsoon rain fall and deluge. The rainfall for
facilities design shall be taken as 100 mm rain in 2 hrs and this intensity
to last over a period of 20 minutes. Water entering the open deck
drain system shall be routed to sea through sump caisson.
Open hydrocarbon drain (OHD) is meant for collection of the
following:-
a) Oil, oily water and chemicals from platform piping /equipment/
storage tanks, spillage etc.
b) Oily water from vessel cleanout and other operations and
maintenance activities.
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c) Run-off water from process areas which may be contaminated
accidentally with oil (e.g. water from around rotating
equipment/skid mounted process equipment which may be
contaminated with oil).
Open hydrocarbon drain system shall be designed to accept minor
volumes of hydrocarbons drained intermittently from equipment and
instruments and chemical spillage/ leakages during handling of
chemicals/ hydrocarbon. It is routed to sump caisson from where the oil
is routed to closed drain drum. Recovered oil from closed drain drum is
pumped to condensate header/ HP separator outlet and water to sump
caisson for disposal into sea.
Closed hydrocarbon drain (CHD) is meant for collection of
hydrocarbon/ oily water from the pressurized vessel/ equipment/ pumps/
compressors etc. which are required to be drained under pressure as a
part of normal operational requirement.
The condensate header shall also be hooked up with respective header at
HRC platform through HRC-HRD bridge inter-connection. The drain
system will be designed based on the following:
Closed Drain Drum:
The closed Drain Drum shall be utilized for receiving the all closed
drain liquids from new HRD platform. 2 nos. of closed drain pumps
shall also be used for transferring the crude. The required refurbishment
shall be carried out for the existing pumps.
The drain system will be designed based on the following Closed
Drain Drum
Storage Capacity : 10 M3
(min.)
Design pressure, : 3.5 Kg./cm2g
Closed Drain Pumps:
Nos. : 2 (One operating + one standby)
Capacity, m3/hr. : 10 (min.)
Diff. pressure, kg/cm2 : 10 (min.)
Type : Electrical motor driven reciprocating
Also, at HRC platform the same capacity and type of closed drain drum
and pumps are to be provided.
Closed Drain Drum:
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Sump caisson with blow case
The Sump Caisson shall be utilized for receiving all open, closed drain
fluids separately from HRD Process Platform as well as from the
PWCs on HRC and HRG platforms respectively. Sump caisson is to be
provided with blow case for lifting skimmed oil to Closed Drain Drum.
Sump Caisson shall be a vertical, partially submerged stand pipe with an
open bottom (Min.length-30M, Min.dia.-60). Separation of oil
from water is accomplished by differences in specific gravities. Sump
caisson shall have gas sparger for separation of oil. Baffle arrangement
inside the caisson enhances the separation of the entrained oil particles
and water thus separated is discharged to the ocean. The oil collects
inside the blow case (Min.length-3M, Min.dia.-12) is removed
periodically by pressurizing the blow case with fuel gas to the closed
drain drum. The caisson is vented to LP flare header.
The oil content in sump caisson water outlet shall be less than 25 ppm.
Sampling facility for collecting water sample from the outlet of
sump caisson shall be provided.
3.2.1.8.12 WASTE HEAT RECOVERY AND HOT OIL SYSTEM
The waste heat recovery and hot oil system is designed to meet the
heating requirements of well fluid heater (HRD), Heating of Closed
drain drum at HRD and also the hot oil line to be extended upto HRC
platform to meet the additional heat requirement of HRC. Waste heat
recovery units (WHRUs) shall be installed in the exhaust of turbines of
process gas compressors (PGC).
The hot oil supply and return headers shall be hooked up with respective
inlet and outlet hot oil header of new well fluid heater at HRC platform
through HRD-HRC bridge inter-connections.
The waste heat recovery and hot oil system shall consists of - hot oil
expansion tank, hot oil circulation pumps, hot oil make-up pump, hot
oil filter, gas compressors WHRU and hot oil dump cooler.
Sump caisson is to be
provided with blow case for lifting skimmed oil to Closed Drain Drum.
Sump caisson with blow case
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The waste heat recovery and hot oil system will be designed based on
the following
- Heating oil medium : Hytherm 500
- Hot oil supply pressure : 5.0 kg/cm2g
- Hot oil operating temp. : 250 oC
Hot oil dump cooler is provided to remove excess heat to avoid damage
to the WHRUs and to avoid degradation of the hot oil medium
(Hytherm- 500). Its duty is based on 5% (indicative, to be confirmed
by system vendor) of the total heat generated in the exhaust gases.
3.2.1.8.13 FIRE WATER SYSTEM
The fire water system is designed to primarily meet fire water
requirement of HRD as per relevant codes and standards and
good offshore engineering practices. However, Minimum capacity of
1200 M3/ hr needs to be provided. Fire water deluge systems shall be
provided on all decks and around all equipments containing
hydrocarbons. Fire fighting equipment including hose reels, foam
generators, fire monitors etc. shall be provided at locations determined
by the safety studies. The fire water headers shall be hooked up with
respective headers at HRC platform through HRC-HRD bridge inter-
connection.
The HRC and HRD fire water systems shall provide back-up to
each other. In case of failure of start of FWP at HRC, HRD fire water
pump to start automatically and also in case of HRD pump fails to start,
HRC FWP to start automatically. Logic sequence is to be developed
accordingly. Contractor shall ensure that the HRD fire pumps and
ring main (including the bridge link to HRC) are capable of supplying
the required flow rates and pressures of fire water to HRC in the event
of failure of HRC fire water pump and ensure that there is mutual back-
up.
A chlorination system based on parallel plate electrolytic principle
shall be provided to prevent fouling. Contractor shall design this
system in a manner that ensures that contamination of the potable water
system does not occur.
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The fire water system shall consists of fire water pump, FW pump
caisson, deluge valves, fire water ring main, hose reels, foam
generators, fire monitors, spray network etc.
The fire water system will be designed based on the following:
The fire water pump shall be capable of supplying total
water requirements for the greatest single fire occurrence plus a
minimum of two firewater hose reels maintained at main deck as a
minimum.
No.: One
Capacity, m3/hr.: 1200 (min.)
Discharge Pressure: Adequate to maintain fire water header
pressure at 7 kg/cm2g
Type: Diesel engine driven
3.2.1.8.14 FIRE PROTECTION AND SAFETY SYSTEM
The shutdown system for HRD shall be inter-connected with the
corresponding HEERA complex systems.
2 nos. of Survival Craft of 50 persons capacity shall be provided one
at cellar deck and one at main deck.
Clean Agent unit shall also be provided.
The ESD and F&G systems shall be based on a high reliability, high
availability type PLC, certified to TUV level AK6. The Contractor shall
conduct a risk assessment of the ESD and F&T systems requirements
prior to detailed design to assess the required Safety Integrity Level
(SIL) in accordance with IEC-61508, and shall specify the associated
equipment accordingly.
For details on fire protection & safety system, refer Scope of Work
Instrumentation.
3.2.1.8.15 FIRE SUPPRESSION SYSTEM
For details on fire suppression system, refer Scope of Work
Mechanical.
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3.2.1.8.16 LAUNCHERS/ RECEIVERS
On HRD platform, space provision shall be kept for installation of
two nos. 12 and one no. 16 well fluid receivers.
3.2.2 DESIGN CRITERIA FOR MODIFICATIONS ON
EXISTING HEERA COMPLEX (HRC/ HRG/ WIH)
For detailed scope of work for modifications envisaged on existing
HEERA Complex (HRC/HRG/WIH platform), refer Clause - Section
2.0 - Description of Work (Basic Bid Work).
3.2.3 DESIGN CRITERIA FOR PRE-INSTALLED RISERS:
Two numbers 12 and one number 16 pre-installed risers are to be
provided with jacket. The design pressure and temperature for the same
will be 93.7 Kg/Cm2g and 93 oC
3.2.4 DESIGN CRITERIA FOR FUTURE EQUIPMENT:
The Provision of space, access, process and utility tie-in locations
for the equipment that has been identified as future requirement in
Basic Bid work are to be provided.
Provision for isolation valves to allow future tie-in without any
requirement for hot work or shutdown.
Provision for layouts and preliminary design and engineering so
that the future equipment can be incorporated, supported and
installed into the operating facility without the requirement for hot
work.
3.2.5 INSTRUMENTATION & CONTROL
For instrumentation and control, refer Clause 2.3.6 Description of
Work (Basic Bid work) and Section 3.6 - Instrumentation Design
basis.
3.2.6 SPARING PHILOSOPHY
Sparing philosophy for unit, equipment etc. shall be as per
bid documents. In general, all rotating equipment (pumps, compressors
etc.) shall have one stand-by of same capacity.
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3.2.7 UNITS OF MEASUREMENT
Metric system of units shall be followed.
3.2.8 NUMBERING PHILOSOPHY
Tag numbering philosophy for equipment and instruments shall be
adopted as per industry accepted practice, preferably 4 digits for process
platform. Instrument and piping symbols shall be as per legend sheets.
3.2.9 CODES AND STANDARDS
The following are the minimum applicable Codes and Standards /
relevant API Recommended Practices that shall be followed:-
API 14C
API 14E
API 520
API 521
API 14G
API 14J
NFPA 15 & 20
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ANNEXURE-I
(SHT. 1 OF 2)
WELL FLUID COMPOSITION (TYPICAL) HEERA FIELD
COMPONENT MOL PERCENT
(ON DRY
BASIS)*(FOR GOR-
275)
N2 0.50
CO2 0.940
H2S 0.023
C1 52.97
C2 8.00
C3 5.41
IC4 0.99
NC4 1.37
IC5 0.43
NC5 0.39
C6 0.25
NC7 0.05
CUT-1 4.84
CUT-2 6.63
CUT-3 4.07
CUT-4 2.39
CUT-5 2.46
CUT-6 2.66
CUT-7 2.89
CUT-8 1.16
CUT-9 0.52
CUT-10 0.36
CUT-11 0.32
CUT-12 0.39
TOTAL 100.00
Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
Volume No: II
Section No: 3.2
HRD-Process Platform Project No:
Page: 32 OF 34
FORMAT No. Ref. PROCEDURE No. ISSUE No. REV. No. REV. DATE: ODS/SOF/020B ODS/SOP/017 01 00 21.07.2010
ANNEXURE-I
(Sheet 2 of 2) PSEUDO-CUT DETAILS
CUT ABP (DEG C) SP GR CUT-1 89.57 0.7219 CUT-2 110.10 0.7539 CUT-3 132.50 0.7781 CUT-4 160.80 0.8030 CUT-5 192.10 0.8254 CUT-6 228.90 0.8471 CUT-7 268.80 0.8670 CUT-8 307.70 0.8845 CUT-9 351.80 0.9030 CUT-10 402.50 0.9144 CUT-11 455.20 0.9362 CUT-12 524.00 0.9572 * THIS IS A TYPICAL WELL FLUID COMPOSITION. CONTRACTOR SHALL GENERATE
THE COMPOSITION OF WELL FLUID FOR OTHER GORs.
Characteristics of Crude oil of Heera Platform
S.N. Parameter Result
1 Density at 15C 0.8397
2 Sp.gravity at 60/60F 0.8397
3 API Gravity (60F) 36.93
4 Pour Point C 33
5 Water Content (% by vol.) -
6 B.S.&W (% by vol.) -
7 Kinematic Viscosity at 37.8 C
(cst)
4.44
8 Asphaltene content (% w/w) 1.15
9 Resin content (% w/w) 9.4
10 Wax content (% w/w) 16.67
11 KUOP 11.80
12 Molecular weight 230
Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
Volume No: II
Section No: 3.2
HRD-Process Platform Project No:
Page: 33 OF 34
FORMAT No. Ref. PROCEDURE No. ISSUE No. REV. No. REV. DATE: ODS/SOF/020B ODS/SOP/017 01 00 21.07.2010
ANNEXURE-II
PRODUCED WATER ANALYSIS
Component mg/l
Ca++ 290
Mg++ 36
Na+ & K+ as Na+ 9483
Cl 14200
SO4 230
CO3 120
HCO3 1281
TDS 25640
Salinity (as NaCl) 23400
TSS 40
pH 8.3
Sp. Gr. at 30C 1.018
Offshore Design Section Engineering Services ISO 9001:2008
DESIGN CRITERIA
PROCESS AND UTILITIES
Volume No: II
Section No: 3.2
HRD-Process Platform Project No:
Page: 34 OF 34
FORMAT No. Ref. PROCEDURE No. ISSUE No. REV. No. REV. DATE: ODS/SOF/020B ODS/SOP/017 01 00 21.07.2010
ANNEXURE-III
DIESEL FUEL SPECIFICATION
Sl.
No.
Property Unit Range of Value
1 Distillation % recovery at 366
deg C
90 (min.)
2 Specific Gravity @ 15/15 deg C 0.84 0.88
(approx.)
3 Copper strip corrosion @ 100 deg C for 3 hrs. No worse than
No.1
4 Kinematic viscosity cSt at 38 deg C 2 7.5
5 Cetane Number - 41
6 Flash Point deg C >50
7 Sulphur Wt % 1.0 max.
8 Water Ppmw 50 max.
9 Sediment Wt% Nil
10 Acidity inorganic - Nil
11 Acidity total Mg KOH/g 0.05 0.5 max).
12 Carbon Residue Wt % 0.2 max.
13 Ash content Wt % 0.01 0.02 max.
14 Lower heating value
(approx.)
Kcal/kg 9600 - 10000