FOR CONSTRUCTION
APPROVED
by OE
26-Mar-22
0 14.MAR.2022
C 18.FEB.2022
B
3.NOV.2021
A
1.SEP.2021
REV
DATE
Owner
H.K.YEOM
H.K.YEOM
H.K.YEOM
H.K.YEOM
PREPARED
J.Y.OH
J.Y.OH
J.Y.OH
J.Y.OH
CHECKED
S.G.KIM
S.G.KIM
S.G.KIM
S.G.KIM
APPROVED
FOR CONSTRUCTION
FOR APPROVAL
FOR APPROVAL
FOR APPROVAL
STATUS
CEO OFFICE
ACKNOWLEDGED
AND
SIGNED
Owner’s Engineer
Date:
Mar 27, 2022
R
Contractor
by I
Approved
by IRT on Mar 27, 2022
Sub-Supplier
Project
JAWA 9 & 10 COAL FIRED STEAM POWER PLANT
Document Title
OPERATION & CONTROL PHILOSOPHY-WTP
Document Type
□ Basic Engineering Document
□ Detail Engineering Document
■ Vendor Document □ Other
Document No.
J910-XS01-P0GBB-125727
OPERATION & CONTROL PHILOSOPHY-WTP
J910-XS01-P0GBB-125727
RECORD OF REVISION
Rev.
Date
Page Affected
Description of Revision
A
1.SEP.2021
-
First Issue
B
3.NOV.2021
As marks
Revised as per owner comments
C
18.FEB.2022
As marks
Revised as per owner comments
0
14.MAR.2022
-
-
Rev.0
Jawa 9&10 Coal Fired Steam Power Plant_Design Review Comment Sheet
From :
To :
Cc :
Dwg Title :
Dwg No :
Purpose :
Document Controller
HK
Mr. Salam Syah
IRT
TEPSCO Mr. Kubota Hiroshi
OPERATION & CONTROL PHILOSOPHY-WTP
J910-XS01-P0GBB-125727
FC
Comment Sheet Document No : J910-XS01-P0GBB-125727
Review Category
A = Approved
B = Approved with comments, forward final document
C = Not Approved
I = Accepted for reference (For information only)
B
No.
Rev.
Sheet/ Page/ Sect.
1
A
3 of 35
EPC should put all of WTP components , equipments, pumps, tanks, etc 's
Noted and Revised
tag number in this document completely !
O/E Comments
Consortium Response
Closed
2
A
5 of 35
EPC should inform document number that describing Settling Basin
general arrangement (drawing and section) !
Closed
Closed
Closed
Noted and add it to the para no 6. Reference documents and drawings as below
- GA Drawing for Sea Water Settlement Basin(J910-YT01-P0GBD-125704)
3
A
6 of 35
EPC should complete what kinds of parameters & limitation value which
Noted and Confirmed (Kindly refer detailed information para no 4.1 and for set points para no 5, where
determine water product will be reject or store to the next process on this
parameters & limitations by which product will be reject or store in indicated.
operation philosophy-WTP
4
A
6 of 35
Noted and add it to the para no 4. Control Logic Description as below
Give additional information of capacity for each equipment (MMF, SWRO,
- 4.1 Settlement Basin (P0GBB11/12BB001, Qty: 2 x 100%, Cap : 500m3
BWRO, and other) example: ...x 100%
- 4.2 MMF Feed pump (P0GBB31/32AP001, Qty: 2 x 100%, Cap: 500m3/hr, H : 3bar(g)
Status
Para no 3. general operation of the plant is explanation of the overall concept. For detail information, refer to the
para no 4.12 SWRO Units (P0GBF61/62AT001) and for set point para no 5. set points indicated for off spec quality
parameter.
5
A
6 of 35
Add mechanism to determine if the quality is "off spec". What is the key
parameter.
6
A
6 of 35
please add DM to the abbreviations
Noted and Revised (DM = Demineralised water)
Closed
7
A
6 of 35
what process after this? Is there any disposal after the water has been
saturated?
Yes there will be process considering the conditions with decrease in flux and increase in pressure as below,
CIP will be required, If normalized permeate flux decrease 10% and differential pressure increase 20% of BWRO
unit, If normalized permeate flux decrease 15% of EDI unit after recirculation.
Kindly refer to the para. 4.16. BWRO Units (P0GCF51/52AT001), 4.20. EDI Units (P0GCF81/82AT001)
Closed
8
A
6 of 35
General typo: Plan
Noted and Revised
Closed
7 of 35
Give add sequences start and stop backwash system, because backwash
include one unit in the process of WTP operation
Noted and updated.
Closed
9
A
Closed
Noted and Revised
'Start Service & Potable_Open(Block valve XV-P0GBF22AA051)
10
A
7 of 35
11
A
8 of 35
12
A
8 of 35
Closed
service & potable pump?
EPC should put all of WTP components , equipments, pumps, tanks, etc 's
tag number in this document completely !
Please set page number for this docuemnt!
Please differentiate the status of equipment (pump, fan, etc.) between
stop and trip.
The stop condition is intended by the operator or startup/shutdown
sequence.
Meanwhile, the trip condition is forced by the logic control/interlock.
Noted and Revised
Closed
Noted and Revised
Closed
When the high level is reached, the valve(XV-P0GBB11AA051) is closed.
If not high (Last for 2minutes) valve open.
13
A
8 of 35
Auto mode of control valve only? isn't it required interlock close by Level
HH
8 of 35
The Not Low condition is to set the permissive start for the pump. The
pump started or not, depends on the mode of operation, auto or manual.
Closed
Noted and agreed
So, the conditions for manual and auto mode were described.
14
A
15
A
8 of 35
16
A
22 of 35
during Pump run, LL of pump outlet pressure will not trigger to stand by
pump start?
why there is no table of instrument logic description provided for FeCl3
and NaOCl dosing pump?
Closed
Except for the following two cases, it is recommended to operate after on-site check(or inspection) for the
protection of piping and equipments.
Closed
please refer to the para. 4.29 FeCl3 Dosing Tank (P0GBN81/82BB001), 4.31. NaOCl Dosing Tank (P0GCN11BB001)
Closed
Noted and add it to the para no 4.37 RO CIP Tank (P0GBP51BB001), 4.39. UF CIP Tank (P0GBP52BB001) as below
17
A
25 of 35
what chemical is used for CIP?
Closed
EPC shall deliver explaination regarding :
1. what is the rated/ normal level for this settl basin?
1. Rated/ normal level(=operating level) is between L and H.
2. Add it to the para no 6. Reference documents and drawings as below
- GA Drawing for Sea Water Settlement Basin(J910-YT01-P0GBD-125704)
2. How long is the settlement basin retention time/ settling time ? Please
put the document number that describing this in detail !
18
A
28 of 35
3 ~ 5. Kindly note that, It is continuous operating concept, pump will operate in continous basis between H and L
3. Based on item 01 of 24 incase now level is 2140mm (not Low level;
level. Kindly refer P&ID also, level transmitter P0GBB11CL001 and P0 GBB12CL001 is interlocked with pump for
1200mm x 1,2) than pump is strated and within 25 minutes what will be pump operation with respect water level and if water level will be low low pump will stop,
going to be here? With this MMF feed pump flow rate (item 02 of 24
below) is it a safe level for MMF feedpump with 486 m3/hr caps to pump
in 25minutes ?
Closed
4. Please confirm which level is the safe level for starting the pumps?
5. Please explain in detail !
If there is only outflow without inflow, there is retention time of about 0.41hr for operating. Therefore, the
following logic is configured for the stability of the system.
In the case of all basins, level control is carried out like this, and logic is reflected for each level.
19
A
29 of 35
EPC should confirm and check SWRO high press pump capacity following
SWRO latest capacity as per latest Design Criteria of WTP (to be 300
m3/hr as per latest recomendation - please refer to section 5 item 07 and
08 of 24 this document) !
Kindly refer our deatiled calculation of service water requirement based on final DHI input for CHP (Dust
suppression, stacker, reclaimimg etc) on latest Design Criteria - Service Water System (J910-XW01-P0GHE125010)_Rev F, The total quantity of service water consumption for CHP is incraesed by 2m3/day, However HVAC
requrment of 4 m3/day reduced to zero. Therefore overall consumption of service water per day is reduced to
2m3/day. Hence 200m3/hr SWRO capacity is more than sufficient.
Therefore we confirm SWRO capacity 200m3/hr is final and fixed based on latest and final input with adequate
margin,
Closed
Since flow of SWRP capcity is reatined same based on latest input, so no rset is required for high operating rate and
low operating rate.
EPC should confirm and follow SWRO capacity suggestion as per latest
Design Criteria of WTP to be >= 300m3/hr !
20
A
29 of 35
Please reset the Operating rate, High operating rate, Low operating rate,
etc.!
Kindly refer our deatiled calculation of service water requirement based on final DHI input for CHP (Dust
suppression, stacker, reclaimimg etc) on latest Design Criteria - Service Water System (J910-XW01-P0GHE125010)_Rev F, The total quantity of service water consumption for CHP is incraesed by 2m3/day, However HVAC
requrment of 4 m3/day reduced to zero. Therefore overall consumption of service water per day is reduced to
2m3/day. Hence 200m3/hr SWRO capacity is more than sufficient.
Therefore we confirm SWRO capacity 200m3/hr is final and fixed based on latest and final input with adequate
margin,
Closed
Since flow of SWRP capcity is reatined same based on latest input, so no rset is required for high operating rate and
low operating rate.
EPC should confirm and follow SWRO capacity suggestion as per latest
Design Criteria of WTP to be >= 300m3/hr !
20
A
29 of 35
Please reset the Operating rate, High operating rate, Low operating rate,
etc.!
Kindly refer our deatiled calculation of service water requirement based on final DHI input for CHP (Dust
suppression, stacker, reclaimimg etc) on latest Design Criteria - Service Water System (J910-XW01-P0GHE125010)_Rev F, The total quantity of service water consumption for CHP is incraesed by 2m3/day, However HVAC
requrment of 4 m3/day reduced to zero. Therefore overall consumption of service water per day is reduced to
2m3/day. Hence 200m3/hr SWRO capacity is more than sufficient.
Therefore we confirm SWRO capacity 200m3/hr is final and fixed based on latest and final input with adequate
margin,
Closed
Since flow of SWRP capcity is reatined same based on latest input, so no rset is required for high operating rate and
low operating rate.
21
B
3 of 38
Youre explantion is in Auto mode of Valve, in case of manual mode, is not
In manual mode valve is operated through open / close selection from HMI by operator.
it required
There's no forced close logic in manual mode.
Forced close logic ?
But, There's start up permissive condition "Check for at least pneumatic valve in auto mode." So the WTP can
operate safely.
otherwise operator could not forcee close / open the valve.
Closed
22
B
3 of 38
EPC : Please provide same philosphy to each vender. Please standalize
Stanb-by start condition for overall the plant. at leaset water line (WTP,
WWTP, etc),
Closed
4 of 38
As per Contract requirement Exh B4 Book 1 section 4.5.11.6, it mentioned for the pumps only in WTP. We have
EPC & MFG shall calculate again and make sure 5% margin to be included considered 5% margin on pump capacity for all pumps as well.
for SWRO flow rate/ caps to be provided as per contract requirement
Exhibit B4 Book 1 ; section 4.5.11.6 !
Kindly Refer -Annexure to CRS on WBD attached for detail calculation on margins available in all WTP main umits.
For detailed margin calculation, Kindly also refer J910-XW01-P0GDF-125134 Design Criteria - Water Treatment PlantEPC & MFG shall provide performance curve that describes SWRO
Rev 2 (APPROVED).
flowrates/ capacity with margin !
We have 28% margin on CEDI, 28% margin on BWRO and more than 8% margin on SWRO. Please note that more
Please confirm and fix!
than sufficient margin has been already considered in the WTP plant (EDI,BWRO & SWRO), Kindly accept and
approve.
Closed
4 of 38
As per Contract requirement Exh B4 Book 1 section 4.5.11.6, it mentioned for the pumps only in WTP. We have
EPC & MFG shall calculate again and make sure 5% margin to be included considered 5% margin on pump capacity for all pumps as well.
for SWRO flow rate/ caps to be provided as per contract requirement
Exhibit B4 Book 1 ; section 4.5.11.6 !
Kindly Refer -Annexure to CRS on WBD attached for detail calculation on margins available in all WTP main umits.
For detailed margin calculation, Kindly also refer J910-XW01-P0GDF-125134 Design Criteria - Water Treatment PlantEPC & MFG shall provide performance curve that describes SWRO
Rev 2 (APPROVED
flowrates/ capacity with margin !
We have 28% margin on CEDI, 28% margin on BWRO and more than 8% margin on SWRO. Please note that more
Please confirm and fix!
than sufficient margin has been already considered in the WTP plant (EDI,BWRO & SWRO), Kindly accept and
approve.
Closed
4 of 38
As per Contract requirement Exh B4 Book 1 section 4.5.11.6, it mentioned for the pumps only in WTP. We have
EPC & MFG shall calculate again and make sure 5% margin to be included considered 5% margin on pump capacity for all pumps as well.
for SWRO flow rate/ caps to be provided as per contract requirement
Exhibit B4 Book 1 ; section 4.5.11.6 !
Kindly Refer -Annexure to CRS on WBD attached for detail calculation on margins available in all WTP main umits.
For detailed margin calculation, Kindly also refer J910-XW01-P0GDF-125134 Design Criteria - Water Treatment PlantEPC & MFG shall provide performance curve that describes SWRO
Rev 2 (APPROVED
flowrates/ capacity with margin !
We have 28% margin on CEDI, 28% margin on BWRO and more than 8% margin on SWRO. Please note that more
Please confirm and fix!
than sufficient margin has been already considered in the WTP plant (EDI,BWRO & SWRO), Kindly accept and
approve.
Closed
23
24
25
B
B
B
For this startup operation step by step are they time based operating or
other controlled operating?
26
B
9 of 38
27
B
10 of 38
Noted and confirmed.
It specifies the just sequence for the overall start up and shutdown.
for example step 1 within SWMU pump started into MMF feedpump
started we need to make sure/ consider the Setl basin water level !
i) On the left side column defines sequence for start-up - means the same sequence shall be followed for start-up.
ii) On the right side columndefines sequence for shutdown-means the sane sequnce shall be followed for
shutdown.
So we can say that, If the conditions(=other controlled operating) required for each step are satisfied, it can
proceed to the next step.
EPC to describe the specific "process condition".
Noted and Updated in the document
'Process condition means all logics described to operation in auto mode.
for example, Level, Flow, Pressure,etc.
Closed
Closed
28
B
16 of 38
As per Contract requirement Exh B4 Book 1 section 4.5.11.6, it mentioned for the pumps only in WTP. We have
EPC & MFG shall calculate again and make sure 5% margin to be included considered 5% margin on pump capacity for all pumps as well.
for SWRO flow rate/ caps to be provided as per contract requirement
Exhibit B4 Book 1 ; section 4.5.11.6 !
.Kindly Refer -Annexure to CRS on WBD attached for detail calculation on margins available in all WTP main umits.
For detailed margin calculation, Kindly also refer J910-XW01-P0GDF-125134 Design Criteria - Water Treatment PlantEPC & MFG shall provide performance curve that describes SWRO
Rev 2 (APPROVED)
flowrates/ capacity with margin !
We have 28% margin on CEDI, 28% margin on BWRO and more than 8% margin on SWRO. Please note that more
Please confirm and fix!
than sufficient margin has been already considered in the WTP plant (EDI,BWRO & SWRO), Kindly accept and
approve.
Closed
Kindly note that, based on owner comments, we have indicated stand by pump start conditions logic as below,
29
C
4 of 40
Noconfirmnfirm by logic
i) The duty pump fails to start
ii)When the start signal of duty pump is not feedback
To be closed
We have conveyed this logic for standby start condition to WWTP vendor. Please accept.
30
C
15 of 40
There are normal flowrate and design flowrate for Mass balance condition.
(Refer to the PFD_J910-XG07-P0GCF-125705)
- Normal flowrate is requirement for water consumption, it is operating flow.
EPC shall confirm and revise some pumps capacity in this document refer - Design flowrate is capability of the system.
to J910-YT01-P0GBD-125725 Pumps in Water Treatment Plan, Pump no:
4.5 ; 4.7 ; 4.9 ; 4.10 ; 4.11; 4.14 ; 4.15 ; etc. !
The capacity of pump specified is based on the design flowrate in this document.
'In the case of J910-YT01-P0GBD-125725 Pumps in Water Treatment Plan, 5% margin is applied to the normal
flowrate to select the pump specification.
To be closed
Table Contents
Table Contents ..........................................................................................................................................1
1. Scope: ..................................................................................................................................................3
2. Abbreviations and definitions: .........................................................................................................3
3. General Operation of the Plant: .......................................................................................................3
4. Control Logic Description: ...............................................................................................................6
4.1 Settlement Basin (P0GBB11BB001 & P0GBB12BB001) ...............................................................6
4.2 MMF Feed pump (P0GBB31AP001 & P0GBB32AP001) ..............................................................6
4.3 Multi Media Filters (P0GBB51BB001 & P0GBB52BB001) ..........................................................6
4.4 Ultra-Filtration Units (P0GBB61AT001 & P0GBB62AT001) .......................................................8
4.5 Filter Backwash Blower (P0GBC11AP001 & P0GBC12AP001) .................................................10
4.6 Filter Backwash Tank (P0GBB81BB001) ......................................................................................10
4.7 Filter Backwash Pump (P0GBP31AP001 & P0GBP32AP001) ...................................................10
4.8 Filtered Water Storage Pond (P0GBB71BB001 & P0GBB72BB001) ......................................... 11
4.9 UF Backwash Pump (P0GBP11AP001 & P0GBP12AP001) ........................................................ 11
4.10 SWRO Water Feed Pump (P0GBF11AP001 & P0GBF12AP001)............................................. 11
4.11 SWRO High Pressure Pump (P0GBF41AP001 & P0GBF42AP001 & P0GBF43AP001) .......12
4.12 SWRO Units (P0GBF61AT001 & P0GBF62AT001) ..................................................................13
4.13 SWRO Permeate Water Storage Tank (P0GBF71BB001 & P0GBF72BB001) ........................14
4.14 BWRO Feed Pump (P0GCF11AP001 & P0GCF12AP001) .......................................................14
4.15 BWRO High Pressure Pump (P0GCF41AP001 & P0GCF42AP001 & P0GCF43AP001)......15
4.16 BWRO Units (P0GCF51AT001 & P0GCF52AT001) .................................................................15
4.17 BWRO Permeate Water Storage Tank (P0GCF61BB001) ........................................................16
4.18 EDI Feed Pump (P0GCF71AP001 & P0GCF72AP001).............................................................16
4.19 Flushing Pump (P0GBP41AP001 & P0GBP42AP001) ..............................................................17
4.20 EDI Units (P0GCF81AT001 & P0GCF82AT001) .......................................................................17
4.21 H2SO4 Bulk Storage Tank (P0GBN11BB001) ............................................................................18
4.22 H2SO4 Unloading CUM Transfer Pump (P0GBN21AP001 & P0GBN22AP001) ...................18
4.23 NaOH Bulk Storage Tank (P0GBN13BB001) .............................................................................19
4.24 NaOH Unloading CUM Transfer Pump (P0GBN23AP001 & P0GBN24AP001) ....................19
4.25 H2SO4 Dosing Tank (P0GBN41BB001) ......................................................................................20
4.26 H2SO4 Dosing Pump (P0GBN51AP001 & P0GBN52AP001) ...................................................20
4.27 NaOH Dosing Tank (P0GBN43BB001) ........................................................................................20
4.28 NaOH Dosing Pump (P0GBN53AP001 & P0GBN54AP001 & P0GBN55AP001 & P0GBN56AP001) ..........20
4.29 FeCl3 Dosing Tank (P0GBN81BB001 & P0GBN82BB001) .......................................................21
4.30 FeCl3 Dosing Pump (P0GBN83AP001 & P0GBN84AP001) .....................................................21
4.31 NaOCl Dosing Tank (P0GCN11BB001) .......................................................................................22
4.32 NaOCl Dosing Pump (P0GCN21AP001 & P0GCN22AP001 & P0GCN61AP001 & P0GCN62AP001) ........22
4.33 SBS Dosing Tank (P0GBN71BB001) ............................................................................................22
4.34 SBS Dosing Pump (P0GBN63AP001 & P0GBN64AP001).........................................................22
4.35 Anti-Scalant Dosing Tank (P0GBN91BB001) .............................................................................23
4.36 Anti-Scalant Dosing Pump (P0GBN93AP001 & P0GBN94AP001, P0GCN61AP001 & P0GCN62AP001)............23
4.37 RO CIP Tank (P0GBP51BB001) ..................................................................................................24
4.38 RO CIP Pump (P0GBP61AP001 & P0GBP62AP001)................................................................24
4.39 UF CIP Tank (P0GBP52BB001) ...................................................................................................25
4.40 UF CIP Pump (P0GBP63AP001 & P0GBP64AP001) ................................................................25
4.41 NaHCO3 Dosing Tank (P0GCN31BB001)...................................................................................25
Doc. No. : J910-XS01-P0GBB-125727
Rev : 0
OPERATION & CONTROL PHILOSOPHY-WTP
4.42 NaHCO3 Dosing Pump (P0GCN41AP001 & P0GCN42AP001) ...............................................26
4.43 CaCl2 Dosing Tank (P0GCN33BB001) ........................................................................................26
4.44 CaCl2 Dosing Pump (P0GCN43AP001 & P0GCN44AP001) ....................................................26
4.45 Brine Storage Pond (P0GBB76BB001 & P0GBB77BB001).......................................................27
4.46 Backwash Waste Transfer Pump (P0GBB78AP001 & P0GBB79AP001).................................27
5. Set Point Summary ..........................................................................................................................28
6. Reference documents and drawings: .............................................................................................33
2
Doc. No. : J910-XS01-P0GBB-125727
Rev : 0
OPERATION & CONTROL PHILOSOPHY-WTP
1.
Scope:
This document describes the regulatory control blocks and control loops including all the control
functionality associated with the water treatment plan and it defines the interlocks within various water
treatment stages and packages as below. It provides a brief description for equipment's and instruments
explaining the interlocks and safeguards for safe operation. It provides operation principles, startup and
shutdown sequence chart.
2.
3.
Abbreviations and definitions:
DCS
Distributed Control System
FCV
Flow Control Valve
MMF
Multi Media Filter
UF
Ultra Filtration
SWRO
Sea Water Reverse osmosis
BWRO
Brackish Water Reverse osmosis
EDI
Continuous Electro Deionization
CIP
Cleaning in Place
ORP
Oxygen Reduction Potential
TDS
Total Dissolved Solids
NTU
Nethelometric Turbidity Unit
SDI
Silt Density Index
AO/AFC
Air to Open/Air Fail Close
AC/AFO
Air to Close/Air Fail Open
TMC
Toray Membrane Cleaning
WTP
Water Treatment Plant
LCS
Local Control Station
MCC
Motor Control Center
OWS
Operator Work Station
EWS
Engineering Work Station
PV
Process Value
ERD
Energy Recovery Device
DM
Demineralised Water
General Operation of the Plant:
Seawater makeup pump (not in the scope of this package) discharge line will be terminated one meter
before the control valve station at the inlet of the settlement basin.
3
Doc. No. : J910-XS01-P0GBB-125727
Rev : 0
OPERATION & CONTROL PHILOSOPHY-WTP
The water from the seawater makeup pump will let to the settlement basin with separate inlet system and
outlet system with bottom slope arrangement.
The MMF feed water pump will pump the water to Multimedia filter. The outlet from the MMF will be
collected in the filter back wash tank for backwashing the filters. The remaining water from the MMF will
be sent to filtered water storage tank.
SWRO feed water pump will take suction from the filtered water storage tank and pump to micron
cartridge filter. SWRO High pressure pump will be pump the water to SWRO units.
Turbo charger shall be provided for each SWRO units. The permeate water from SWRO units will be
stored in the SWRO permeate storage tank.
The reject from the SWRO units will be sent to brine storage tank. If the quality of the permeate (Off spec)
is not meeting the required permeate quality the water will be sent back to filtered water storage tank.
A portion of the permeate water from SWRO units will be pass through remineralization units and stored
in the service water storage tank and potable water storage tank. Sodium Bicarbonate and Calcium
Chloride will be dosed at the Service water line and potable water line for remineralization.
The water from SWRO permeate tank will be passed through micron cartridge filter by BWRO high
pressure pump and sent to BWRO units. The permeate water from BWRO units will be stored in BWRO
permeate water storage tank.
The reject water from the BWRO units will be sent back to filtered water storage tank. If the quality of
permeate is not meeting the required quality the water willl be sent back to filtered water storage tank.
The water from BWRO permeate storage tank will be pumped by EDI feed Pump to EDI units. The outlet
from the EDI unit will be stored in the DM (Demineralised Water) water storage tank. If the quality of
permeate is not meeting the required quality the water will be sent back to SWRO permeate storage tank.
Startup and shutdown of each subsystem of the Water Treatment Plant may be at any time, up to operator
criteria.
4
Doc. No. : J910-XS01-P0GBB-125727
Rev : 0
OPERATION & CONTROL PHILOSOPHY-WTP
For a complete Water treatment Plan startup and shutdown the following sequences are defined.
STEP1
STEP2
STEP3
•Water Treatment Plant - STARTUP
•Water Treatment Plant - SHUTDOWN
•Start Sea Water Makeup Pump & MMF
•Stop (Close Block Valve) Service &
Feed Pump
•Start Mutil Media Filter
STEP2
•Start Ultrafiltration Unit
STEP3
•Start (First) SWRO Water Feed Pump &
STEP4
STEP6
(Second) SWRO High Pressure Pump
STEP8
STEP9
STEP10
FINAL
•Stop EDI Unit
& (Second) BWRO Feed Pump
STEP4
Potable Water (Remineralization)
STEP5
•Stop BWRO Unit
•Stop (First) SWRO High Pressure Pump
•Start SWRO Unit
& (Second) SWRO Feed Pump
STEP6
•Start (First) BWROFeed Pump &
STEP7
•Stop EDI Feed Pump
•Stop (First) BWRO High Pressure Pump
•Start (Open Block Valve) Service &
STEP5
Potable Water (Remineralization)
STEP1
(Second) BWRO High Pressure Pump
STEP7
•Stop SWRO Unit
•Stop MMF Feed Pump & Sea Water
•Start BWRO Unit
Makerup Pump
STEP8
•Start EDI Feed Pump
STEP9
•Start EDI Unit
STEP10
•Water Treatment Plant - OPERATION
FINAL
•Stop Ultrafiltration Unit
•Stop Mutil Media Filter
•Water Treatment Plant - STOPPED
Note
1. The Multi Media Filter Backwash Start Condition
-
Periodic Time : every 24hr & Differential Pressure : High
2. After backwash of Multi Media Filter it will go in to Standby mode
3. Other Multi Media Filter will operate to produce water for backwash of one filer.
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4.
Control Logic Description:
4.1 Settlement Basin (P0GBB11BB001& P0GBB12BB001, Q’ty : 2x100%, Cap. : 500m3)
Instrument with Logic Description:
No
Cause
Consequences
1
High level (LIT P0GBB11CL001&
Valve close (XV-P0GBB11AA051).
P0GBB12CL001) of Settlement basin
If not high (Last for 2minutes) valve open.
Low level (LIT P0GBB11CL001&
MMF feed pump trip (P0GBB31AP001&
P0GBB12CL001) of Settlement basin
P0GBB32AP001).
2
If not low (Last for 2minutes) pump start.
4.2 MMF Feed pump (P0GBB31AP001& P0GBB32AP001, Q’ty : 2x100%, Cap. : 500m3/hr, H : 3bar(g))
DCS Operation : MMF Feed pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
Instrument with Logic Description:
No
Cause
Consequences
1
Low flow (FIT P0GBB51CF001&
MMF feed pump trip (P0GBB31AP001&
P0GBB52CF001) of Multi media filter suction
P0GBB32AP001).
If not low (Last for 2minutes) pump start.
The automatic duty /standby changeover will be triggered by:

The duty pump fails to start.

When the start signal of the duty pump is not feed back.
4.3 Multi Media Filters (P0GBB51BB001& P0GBB52BB001, Q’ty : 2x100%, Cap. : 500m3/hr)
Auto operation : Normally the multi media filter shall be kept in auto mode. The filters shall operate
continuously. One filter will normally operate to produce water. During backwash, other filter will operate to
produce water for backwash of one filer.
Filter run time between backwashes shall be at least 24 hours maximum. After backwash of multi media filter
it will go in to Standby mode. All backwash steps shall be completed automatically and unit goes to standby
mode shall be available for service.
Semi - auto operation : In Semi-auto mode, operator can select service / backwash operation.
Service mode : With selection of this operation the multi media filter shall go into service. This mode is
active only in semi auto mode. The service cycle is terminated based on periodic time(every 24hr) and
pressure drop(0.8barg), however the unit goes to standby after service and backwash starts only after initiation
from HMI.
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Backwash mode : In semi auto mode all backwash steps of multi media filter is carried out automatically.
These selections are active only during the backwash of multi media filter.
a) Step advance : if step advance is pressed, the sequence is moved to the next step.
b) Step hold : By selection of step hold, the timer of backwash step will be on hold, and the hold will
be removed only after deactivating step hold selection and backwash step timer will resume from
where it was stopped.
Standby mode : All the valves of selected train / unit go to the closed position.
Manual mode : In manual mode each valve is operated through an open / close selection from HMI.
This mode is useful in start up and for testing purpose.
Start Up Permissive
a) Check for at least multi media filter in auto mode.
b) Check for at least UF unit in auto mode.
c) Check for at least pneumatic valve in auto mode.
d) Check for at least MMF feed pump in auto mode.
e) Water demand defined by water level (LIT P0GBB71CL001&P0GBB72CL001) in filtered water storage
pond (P0GBB71BB001& P0GBB72BB001).
f) Water levels (P0GBB21CL001) in the settlement chamber basin shall not be low.
Conditions associated to Service operation sequence interruption
Service sequence is interrupted based on any of the following conditions:
a) On receipt of High differential pressure (0.8barg) alarm across MMF. (PDIT P0GBB51CP001 &
P0GBB52CP001)
b) Periodic timer 24 hours
c) If any on-off valve which is required to open / close in the particular step is not opened / closed, then the
sequence is interrupted as per valve sequence chart. (valve fault)
d) If associated multi media filter is removed from auto mode
Conditions associated to backwash operation sequence interruption
Backwash sequence is interrupted based on any of the following conditions:
a) Other multi media filter is in backwash mode.
b) Filter backwash blower (P0GBC11AN001&P0GBC12AN001) in manual mode.
c) Filter backwash pump (P0GBP31AP001& P0GBP32AP001) in manual mode.
d) If any on-off valve which is required to open / close in the particular step is not opened / closed, then the
sequence is interrupted as per valve sequence chart. (valve fault)
e) If associated multi media filter is removed from auto mode
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Instrument with Logic Description:
No
Cause
Consequences
1
High Differential Pressure
MMF duty change (P0GBB51BB001 &
(PDIT P0GBB51CP001& P0GBB52CP001) of P0GBB52BB001).
MMF
If not High (Last for 2minutes) MMF start.
Note 1. Refer to the table 1 for operation & backwash sequence chart .
4.4 Ultra-Filtration Units (P0GBB61AT001& P0GBB62AT001, Q’ty : 2x100%, Cap. : 483m3/hr)
The ultra-filtration units will operate with regular service with backwashing based on the pre-set time and
TMC (Toray Membrane Cleaning), if necessary.
Service with backwashing
a) Fill-up : 35 sec.
b) Filtration : 30 min.
c) Back-Wash : 45 sec.
d) Aeration : 60 sec.
e) Drain : 45 sec.
TMC(Toray Membrane Cleaning)
a) Interval : 1day
b) Total TMC time : app. 25min
c) Using chemical : NaOCl
Auto operation : Normally the ultra-filtration units shall be kept in auto mode. The ultra-filtration units shall
operate continuously. One ultra-filtration unit will normally operate to produce water. During backwash or
TMC, other ultra-filtration unit will operate to produce water for backwash or TMC of ultra-filtration unit.
Ultra-filtration unit run time between backwash or TMC shall be at time schedule. After backwash or TMC of
ultra-filtration unit it will go in to standby mode. All backwash or TMC steps shall be completed
automatically and unit goes to standby mode shall be available for service.
Semi - auto operation : In semi-auto mode, operator can select service with backwashing / TMC operation.
Service mode : With selection of this operation the ultra-filtration unit shall go into service. This mode is
active only in semi auto mode.
The service cycle is terminated based on periodic time (30min/cycle) and pressure drop (0.8barg), however
the unit goes to standby after service starts only after initiation from HMI.
Backwash mode : In semi auto mode all backwash steps of ultra-filtration unit is carried out automatically.
These selections are active only during the backwash of ultra-filtration unit.
a) Step advance : if step advance is pressed, the sequence is moved to the next step.
b) Step hold : By selection of step hold, the timer of backwash step will be on hold, and the hold will
be removed only after deactivating step hold selection and backwash step timer will resume from where it was
stopped.
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Standby mode : All the valves of selected train / unit go to the closed position.
Manual mode : In manual mode each valve is operated through an open / close selection from HMI. This
mode is useful in start up and for testing purpose.
Start Up Permissive
a) Check for at least ultra-filtration unit in auto mode.
b) Check for at least multi media filter in auto mode.
c) Check for at least pneumatic valve in auto mode.
d) Check for at least MMF feed pump in auto mode.
e) Water demand defined by water level (LIT P0GBB71CL001&P0GBB72CL001) in filtered water storage
pond (P0GBB71BB001& P0GBB72BB001).
f) Water levels (P0GBB21CL001) in the settlement chamber basin shall not below.
Conditions associated to Service Operation sequence Interruption
Service sequence is interrupted based on any of the following conditions:
a) On receipt of High differential pressure (1.5barg) alarm across ultra-filtration unit.
(PIT P0GBB61CP001& P0GBB61CP002, PIT P0GBB62CP001& P0GBB62CP002)
b) Periodic timer 30mins
c) If any on-off valve which is required to open / close in the particular step is not opened / closed, then the
sequence is interrupted as per valve sequence chart. (valve fault)
d) If associated ultra-filtration unit is removed from auto mode
Conditions associated to Backwash & TMC Operation sequence Interruption
Backwash Sequence is interrupted based on any of the following conditions:
a) Other ultra-filtration unit is in backwash mode.
b) Filter backwash blower (P0GBC11AN001& P0GBC12AN001) in manual mode.
c) NaOCl dosing tank (P0GCN11BB001) low level.
d) NaOCl dosing pump (P0GBN61AP001& P0GBN62AP001) in manual mode.
e) UF backwash pump (P0GBP11AP001& P0GBP12AP001) in manual mode
f) If any on-off valve which is required to open / close in the particular step is not opened / closed, then the
sequence is interrupted as per valve sequence chart. (valve fault)
g) If associated ultra-filtration unit is removed from auto mode
Instrument with Logic Description:
No
Cause
Consequences
1
High Differential Pressure (1.5barg)
Ultra-filtration unit duty change
(PIT P0GBB61CP001 & P0GBB61CP002, (P0GBB61AT001 & P0GBB62AT001).
P0GBB62CP001 & P0GBB62CP002) of ultra- If not High (Last for 2minutes) ultra-filtration unit
filtration unit
start
Note 1. Refer to the table 2 for operation & backwash, TMC sequence chart.
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4.5 Filter Backwash Blower (P0GBC11AP001&P0GBC12AP001, Q’ty : 2x100%, Cap. : 505Nm3/hr, H : 5,000mmAq)
DCS Operation : Filter backwash blower operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty blower start and trip automatically based on process
condition (Flow, Pressure etc).
The automatic duty /standby changeover will be triggered by:
-
The duty blower fails to start.
-
When the start signal of the duty blower is not feed back.
4.6 Filter Backwash Tank (P0GBB81BB001, Q’ty : 1x100%, Cap. : 180m3)
Instrument with Logic Description:
No
Cause
1
Low level (LIT P0GBB81CL001) of Filter Filter backwash pump trip (P0GBP31AP001 &
backwash tank
Consequences
P0GBP32AP001).
If not low (Last for 2minutes) pump strat.
2
High level (LIT P0GBB81CL001) of Filter Valve
backwash tank
close
(XV-P0GBB53AA052)
of
Filter
backwash tank suction.
If not high (Last for 2minutes) valve open.
4.7 Filter Backwash Pump (P0GBP31AP001& P0GBP32AP001, Q’ty : 2x100%, Cap. : 350m3, H : 3bar(g))
DCS Operation : Filter backwash pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
Instrument with Logic Description:
No
Cause
1
Low pressure (PIT P0GBP31CP001) of Filter Filter backwash pump trip (P0GBP31AP001 &
backwash pump discharge
Consequences
P0GBP32AP001).
If not low (Last for 2minutes) pump start.
The automatic duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
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4.8 Filtered Water Storage Pond (P0GBB71BB001&P0GBB72BB001, Q’ty : 2x50%, Cap. : 183m3)
Instrument with Logic Description:
No
Cause
1
High
Consequences
level
(LIT
P0GBB71CL001
& Valve close (XV-P0GBB11AA051).
P0GBB72CL001) of Filtered water storage If not high (Last for 2minutes) valve open.
pond
4.9 UF Backwash Pump (P0GBP11AP001&P0GBP12AP001, Q’ty : 2x100%, Cap. : 580m3/hr, H : 2.5bar(g))
DCS Operation : UF backwash pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
Instrument with Logic Description:
No
Cause
1
Low
Consequences
level
(LIT
P0GBB71CL001
& UF
backwash
pump
trip
(P0GBP11AP001
&
P0GBB72CL001) of Filtered water storage P0GBP12AP001).
pond
2
If not low (Last for 2minutes) pump start.
Low pressure (PIT P0GBP11CP001) of UF UF
backwash pump discharge
backwash
pump
trip
(P0GBP11AP001
&
P0GBP12AP001).
If not low (Last for 2minutes) pump start.
The automatic duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
4.10 SWRO Water Feed Pump (P0GBF11AP001&P0GBF12AP001, Q’ty : 2 x 100%, Cap. : 476m3/hr, H : 5bar(g))
DCS Operation : SWRO water feed pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start & trip and control valve open & close
automatically based on process condition (Level, Flow, Pressure etc).
-
Start condition
a. Stroke(%) position of control valve is 80% open when SWRO water feed pump run alone.
b. When the fifteen(15%) stroke of control valve is reached and after 5min, SWRO high pressure
pump shall be run.
c. Slowly open 1% stroke per setting time(sec) of control valve for flow control.
d. If SWRO water feed pump no run, SWRO high pressure pump shall not be run.
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-
Trip condition
a. Slowly close 1% stroke per setting time(sec) of control valve.
b. When the fifteen(15%) stroke of control valve is reached, SWRO high pressure pump shall be
trip.
c. SWRO water feed pump shall be trip after 5min
Instrument with Logic Description:
No
Cause
Consequences
1
Low level (LIT P0GBB71CL001 &
SWRO water feed pump trip (P0GBF11AP001 &
P0GBB72CL001) of Filtered water storage
P0GBF12AP001).
Pond
If not low (Last for 2minutes) pump start.
Low pressure (PIT P0GBF41CP001 &
SWRO water feed pump trip (P0GBF11AP001 &
P0GBF42CP001 & P0GBF43CP001) of
P0GBF12AP001).
SWRO high pressure pump suction
If not low (Last for 2minutes) pump start.
2
The automatic duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
4.11 SWRO High Pressure Pump (P0GBF41AP001&P0GBF42AP001& P0GBF43AP001, Q’ty : 3 x 100%,
Cap. : 476m3/hr, H : 30bar(g))
DCS Operation : SWRO high pressure pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start & trip and control valve open & close
automatically based on process condition (Level, Flow, Pressure etc).
-
Start condition
a. Stroke(%) position of control valve is 80% open when SWRO water feed pump run alone.
b. When the fifteen(15%) stroke of control valve is reached and after 5min, SWRO high pressure
pump shall be run.
c. Slowly open 1% stroke per setting time(sec) of control valve for flow control.
d. If SWRO water feed pump no run, SWRO high pressure pump shall not be run.
-
Trip condition
a. Slowly close 1% stroke per setting time(sec) of control valve.
b. When the fifteen(15%) stroke of control valve is reached, SWRO high pressure pump shall be
trip.
c. SWRO water feed pump shall be trip after 5min
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Instrument with Logic Description:
No
Cause
Consequences
1
High or Low pressure
SWRO high pressure pump trip
(PIT P0GBF61CP001 & P0GBF62CP001) of
(P0GBF41AP001&P0GBF42AP001&
SWRO unit suction
P0GBF43AP001).
If not high or Low (Last for 2minutes) pump start
The manual duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
4.12 SWRO Units (P0GBF61AT001& P0GBF62AT001, Q’ty : 2 x 100%, Cap. : 200m3/hr(Product))
Auto operation : Normally the SWRO units shall be kept in auto mode. The units shall operate continuously.
Manual mode : In manual mode each valve is operated through an open / close selection from HMI.
This mode is useful in start up and for testing purpose.
Start Up Permissive
a) Check for at least SWRO unit in auto mode.
b) Check for at least pneumatic valve in auto mode.
c) Check for at least SWRO water feed pump, SWRO high pressure pump in auto mode.
d) Water demand defined by water level (LIT P0GBB71CL001&P0GBB72CL001) in filtered water storage
pond (P0GBB71BB001& P0GBB72BB001).
e) Water demand defined by water level (LIT P0GBF71CL001&P0GBF72CL001) in SWRO permeate water
storage tank (P0GBF71BB001&P0GBF72BB001).
Conditions associated to Service Operation sequence Interruption
Service sequence is interrupted based on any of the following conditions:
a) On receipt of High differential pressure (1.0barg) alarm across SWRO unit.
(PIT P0GBF61CP001& P0GBF61CP002, P0GBF62CP001&P0GBF62CP002)
b) If any on-off valve which is required to open/close in the particular step is not opened/closed, then the
sequence is interrupted as per valve sequence chart. (valve fault)
c) If associated SWRO unit is removed from auto mode
Instrument with Logic Description:
No
Cause
Consequences
1
Low or High flow (FIT P0GBF61CP001 &
Flow control according to the set value.
P0GBF62CP001) of SWRO unit discharge
(FCV P0GBF41AP081& P0GBF43AP081).
High conductivity value (AE
Valve open (XV-P0GBF61AA052&P0GBF62AA052)
P0GBF61CQ001) of SWRO units discharge
and Valve close (XV-P0GBF61AA051 &
2
P0GBF62AA051) of SWRO units discharge.
If not high (Last for 2minutes) valve open and close.
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CIP Operation(Manual) is based on any of the following conditions:
a) If normalized permeate flux decrease 10%.
b) If differential pressure increase 20%.
4.13 SWRO Permeate Water Storage Tank (P0GBF71BB001&P0GBF72BB001, Q’ty : 2 x 50%, Cap. : 73m3)
Instrument with Logic Description:
No
Cause
Consequences
1
High level (LIT P0GBF71CL001 &
Valve open (XV-P0GBF22AA051) of service &
P0GBF72CL001) of SWRO permeate water potable water suction.
2
storage tank
If low (Last for 2minutes) valve close.
High level (LIT P0GBF71CL001&
SWRO high pressure pump trip (P0GBF41AP001
P0GBF72CL001) of SWRO permeate water & P0GBF42AP001 & P0GBF43AP001).
storage tank
If not high (Last for 2minutes) pump start.
4.14 BWRO Feed Pump (P0GCF11AP001&P0GCF12AP001, Q’ty : 2 x 100%, Cap. : 118m3/hr, H : 2.5bar(g))
DCS Operation : BWRO feed pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
-
Start condition
a. BWRO water feed pump run alone.
b. BWRO high pressure pump shall be run after 5min.
c. If BWRO water feed pump no run, BWRO high pressure pump shall not be run.
-
Trip condition
a. BWRO high pressure pump trip.
b. BWRO water feed pump shall be trip after 5min.
c. If BWRO high pressure pump no trip, BWRO water feed pump shall not be trip.
Instrument with Logic Description:
No
Cause
1
Low pressure (PIT P0GCF31CP002) of Micro BWRO feed pump trip (P0GCF11AP001&
cartridge filter discharge
Consequences
P0GCF12AP001).
If not low (Last for 2minutes) pump start.
2
Low level (LIT P0GBF71CL001 &
BWRO feed pump trip (P0GCF11AP001&
P0GBF72CL001) of SWRO permeate water P0GCF12AP001).
storage tank
If not low (Last for 2minutes) pump start.
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The automatic duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
4.15 BWRO High Pressure Pump (P0GCF41AP001&P0GCF42AP001&P0GCF43AP001, Q’ty : 3 x 100%,
Cap. : 118m3/hr, H : 11bar(g))
DCS Operation : SWRO high pressure pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
-
Start condition
a. BWRO water feed pump run alone.
b. BWRO high pressure pump shall be run after 5min.
c. If BWRO water feed pump no run, BWRO high pressure pump shall not be run.
-
Trip condition
a. BWRO high pressure pump trip.
b. BWRO water feed pump shall be trip after 5min.
c. If BWRO high pressure pump no trip, BWRO water feed pump shall not be trip.
Instrument with Logic Description:
No
Cause
Consequences
1
High or Low pressure
BWRO high pressure pump trip
(PIT P0GCF51CP001&P0GCF52CP001) of
(P0GCF41AP001&P0GCF42AP001&P0GCF43AP001).
BWRO unit suction
If not high or Low (Last for 2minutes) pump start.
2
High level (LIT P0GCF61CL001) of BWRO BWRO high pressure pump trip
permeate water storage tank
(P0GCF41AP001&P0GCF42AP001&P0GCF43AP001).
If not high (Last for 2minutes) pump start.
The manual duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
4.16 BWRO Units (P0GCF51AT001&P0GCF52AT001, Q’ty : 2 x 100%, Cap. : 100m3/hr(Product))
Auto operation : Normally the BWRO units shall be kept in auto mode. The units shall operate continuously.
Manual mode : In manual mode each valve is operated through an open / close selection from HMI.
This mode is useful in start up and for testing purpose.
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Start Up Permissive
a) Check for at least BWRO unit in auto mode.
b) Check for at least pneumatic valve in auto mode.
c) Check for at least BWRO water feed pump, BWRO high pressure pump in auto mode.
d) Water demand defined by water level (LIT P0GBF71CL001&LIT P0GBF72CL001) in SWRO permeate
water storage tank (P0GBF71BB001&P0GBF72BB001).
e) Water demand defined by water level (LIT P0GCF61CL001) in BWRO permeate water storage tank.
(P0GBF6BB001).
Conditions associated to Service Operation sequence Interruption
Service sequence is interrupted based on any of the following conditions:
a) On receipt of High differential pressure (3.0barg) alarm across BWRO unit. (PIT P0GCF51CP001 &
P0GCF52CP001, P0GCF51CP002 & P0GCF52CP002)
b) If any on-off valve which is required to open/close in the particular step is not opened/closed, then the
sequence is interrupted as per valve sequence chart. (valve fault)
c) If associated BWRO unit is removed from auto mode
Instrument with Logic Description:
No
Cause
Consequences
1
Low or High flow (FIT P0GCF51CP001 &
Flow control according to the set value.
P0GCF52CP001) of BWRO unit discharge
(FCV P0GCF51AP081 & P0GCF52AP081).
High conductivity value (AE
Valve open (XV P0GCF51AA053 &
P0GCF51CQ001) of BWRO units discharge
P0GCF52AA053) and Valve close (XV
2
P0GBF51AA052 & P0GBF52AA052) of BWRO
units discharge. If not high (Last for 2minutes) valve
open and close.
CIP Operation(Manual) is based on any of the following conditions:
a) If normalized permeate flux decrease 10%.
b) If differential pressure increase 20%.
4.17 BWRO Permeate Water Storage Tank (P0GCF61BB001, Q’ty : 1 x 100%, Cap. : 108m3)
Instrument with Logic Description : N/A
4.18 EDI Feed Pump (P0GCF71AP001&P0GCF72AP001, Q’ty : 2 x 100%, Cap. : 100m3/hr, H : 4bar(g))
DCS Operation : EDI feed pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
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Instrument with Logic Description:
No
Cause
Consequences
1
Low flow (FIT P0GCF71CF001) of EDI feed EDI feed pump trip (P0GCF71AP001 &
pump discharge
P0GCF72AP001).
If not low (Last for 2minutes) pump start.
2
High level of Demineralized water storage EDI feed pump trip (P0GCF71AP001 &
tank(Out of Scope)
P0GCF72AP001).
If not high (Last for 2minutes) pump start.
3
Low level (LIT P0GCF61CL001) of BWRO EDI feed pump trip (P0GCF71AP001 &
permeate water storage tank
P0GCF72AP001).
If not low (Last for 2minutes) pump start.
The manual duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
4.19 Flushing Pump (P0GBP41AP001&P0GBP42AP001, Q’ty : 2 x 100%, Cap. : 300m3/hr, H : 3.5bar(g))
DCS Operation : Flushing pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
Instrument with Logic Description:
No
Cause
1
Low
Consequences
pressure
(PIT
P0GBP41CP001)
of Flushing pump trip (P0GBP41/42AP001).
Flushing pump discharge
2
If not low (Last for 2minutes) pump start.
Low level (LIT P0GCF61CL001) of BWRO Flushing pump trip (P0GBP41/42AP001).
permeate water storage tank
If not low (Last for 2minutes) pump start.
The manual duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
4.20 EDI Units (P0GCF81AT001&P0GCF82AT001, Q’ty : 2 x 100%, Cap. : 95m3/hr(Product))
Auto operation : Normally the EDI units shall be kept in auto mode. The units shall operate continuously.
Manual mode : In manual mode each valve is operated through an open / close selection from HMI.
This mode is useful in start up and for testing purpose.
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Start Up Permissive
a) Check for at least EDI unit in auto mode.
b) Check for at least pneumatic valve in auto mode.
c) Check for at least EDI feed pump in auto mode.
d) Water demand defined by water level (LIT P0GCF61CL001) in BWRO permeate water storage tank.
(P0GCF61BB001).
e) Water demand defined by water level in Demineralized water storage tank (Out of Scope).
Conditions associated to Service Operation sequence Interruption
Service Sequence is interrupted based on any of the following conditions:
a) On receipt of High value alarm across EDI unit. (AE P0GCF81CQ001(Cond.), AE P0GCF81CQ002(pH),
AE P0GCF81CQ003(SiO2), AE P0GCF81CQ004(Na))
b) If any on-off valve which is required to open/close in the particular step is not opened/closed, then the
sequence is interrupted as per valve sequence chart. (valve fault)
c) If associated EDI unit is removed from auto mode
Instrument with Logic Description:
No
Cause
Consequences
1
High value of EDI units discharge
Valve open (XV-P0GCF81AA052) and Valve close
AE P0GCF81CQ001(Cond.),
(XV-P0GCF82AA051) of EDI units discharge.
AE P0GCF81CQ002(pH),
If not high (Last for 2minutes) valve open and close.
AE P0GCF81CQ003(SiO2),
AE P0GCF81CQ004(Na)
CIP Operation(Manual) is based on any of the following conditions:
a) If normalized permeate flux decrease 15%.
4.21 H2SO4 Bulk Storage Tank (P0GBN11BB001, Q’ty : 1 x 100%, Cap. : 6.8m3)
Instrument with Logic Description:
No
Cause
1
Low level (LS P0GBN11CL001) of H2SO4 H2SO4 unloading CUM transfer pump trip
bulk storage tank
Consequences
(P0GBN21AP001&P0GBN22AP001).
If not low (Last for 2minutes) pump start.
4.22 H2SO4 Unloading CUM Transfer Pump
(P0GBN21AP001&P0GBN22AP001, Q’ty : 2 x 100%, Cap. : 5m3/hr, H : 1.5bar(g))
DCS Operation : H2SO4 unloading CUM transfer pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
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Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
Instrument with Logic Description:
No
Cause
1
Low level (LS P0GBN41CL080) of H2SO4 H2SO4 unloading CUM transfer pump start
dosing tank
Consequences
(P0GBN21AP001&P0GBN22AP001).
If not low (Last for 2minutes) pump trip
or When high pump trip
The manual duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
4.23 NaOH Bulk Storage Tank (P0GBN13BB001, Q’ty : 1 x 100%, Cap. : 6.8m3)
Instrument with Logic Description:
No
Cause
1
Low level (LS P0GBN13CL001) of NaOH NaOH unloading CUM transfer pump trip
bulk storage tank
Consequences
(P0GBN23AP001& P0GBN24AP001).
If not low (Last for 2minutes) pump start.
4.24 NaOH Unloading CUM Transfer Pump
(P0GBN23AP001&P0GBN24AP001, Q’ty : 2 x 100%, Cap. : 5m3/hr, H : 1.5bar(g))
DCS Operation : NaOH unloading CUM transfer pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
Instrument with Logic Description:
No
Cause
1
Low level (LS P0GBN43CL080) of NaOH NaOH unloading CUM transfer pump start
dosing tank
Consequences
(P0GBN23AP001&P0GBN24AP001).
If not low (Last for 2minutes) pump trip.
or When high pump trip
The manual duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
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4.25 H2SO4 Dosing Tank (P0GBN41BB001, Q’ty : 1 x 100%, Cap. : 1m3)
Instrument with Logic Description:
No
Cause
1
Low level (LS P0GBN41CL080) of H2SO4 H2SO4 dosing pump trip (P0GBN51AP001 &
dosing tank
Consequences
P0GBN52AP001).
If not low (Last for 2minutes) pump start.
4.26 H2SO4 Dosing Pump (P0GBN51AP001&P0GBN52AP001, Q’ty : 2 x 100%, Cap. : 10L/hr, H : 5bar(g))
DCS Operation : H2SO4 dosing pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
Instrument with Logic Description:
No
Cause
1
Low or High pH (AE P0GBF21CQ001) of pH control according to the set value.
SWRO water feed pump discharge
Consequences
If not low or high (Last for 2minutes) pump trip.
Chemical Injection Point:
H2SO4 dosing set is provided for pH control injection to (By automatic operation)
a) Line mixer for SWRO(P0GBF21AM001)
The manual duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
4.27 NaOH Dosing Tank (P0GBN43BB001, Q’ty : 1 x 100%, Cap. : 1m3)
Instrument with Logic Description:
No
Cause
1
Low level (LS P0GBN43CL080) of NaOH NaOH dosing pump trip
dosing tank
Consequences
(P0GBN53AP001 & P0GBN54AP001
& P0GBN55AP001 & P0GBN56AP001).
If not low (Last for 2minutes) pump start.
4.28 NaOH Dosing Pump (P0GBN53AP001 & P0GBN54AP001, Q’ty : 2 x 100%, Cap. : 10L/hr, H : 5bar(g)
/ P0GBN55AP001 & P0GBN56AP001, Q’ty : 2 x 100%, Cap. : 10L/hr, H : 5bar(g))
DCS Operation : NaOH dosing pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
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Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
Instrument with Logic Description:
No
Cause
1
Low or High pH (AE P0GCF31CQ001) of pH control according to the set value.
BWRO feed pump discharge
Consequences
If not low or high (Last for 2minutes) pump trip.
Chemical Injection Point:
NaOH dosing set is provided for pH control injection to (By automatic operation)
a) Line mixer for BWRO(P0GCF21AM001) by P0GBN53AP001&P0GBN54AP001
NaOH dosing set is provided for CIP & Process injection to (By Manual operation)
a) RO CIP tank(P0GBP51BB001) by P0GBN53AP001&P0GBN54AP001
b) Line mixer for MMF(P0GBB41AM001) by P0GBN55AP001&P0GBN56AP001
The manual duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
4.29 FeCl3 Dosing Tank (P0GBN81BB001&P0GBN82BB001, Q’ty : 2 x 50%, Cap. : 1m3)
Instrument with Logic Description:
No
Cause
Consequences
1
Low level (LS P0GBN81CL080 &
FeCl3 dosing pump trip
P0GBN82CL080) of FeCl3 dosing tank
(P0GBN83AP001& P0GBN84AP001).
If not low (Last for 2minutes) pump start.
4.30 FeCl3 Dosing Pump (P0GBN83AP001&P0GBN84AP001, Q’ty : 2 x 100%, Cap. : 20L/hr, H : 5bar(g))
DCS Operation : FeCl3 dosing pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
Chemical Injection Point:
FeCl3 dosing set is provided for process injection to (By Manual operation)
a) Line mixer for MMF (P0GBB41AM001)
The manual duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
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4.31 NaOCl Dosing Tank (P0GCN11BB001, Q’ty : 1 x 100%, Cap. : 1m3)
Instrument with Logic Description:
No
Cause
Consequences
1
Low level (LS P0GCN11CL080) of NaOCl dosing
NaOCl dosing pump trip
tank
(P0GCN21AP001 & P0GCN22AP001,
P0GCN61AP001 & P0GCN62AP001).
If not low (Last for 2minutes) pump start.
4.32 NaOCl Dosing Pump (P0GCN21AP001 & P0GCN22AP001, Q’ty : 2 x 100%, Cap. : 1L/hr, H : 5bar(g) /
P0GCN61AP001 & P0GCN62AP001, Q’ty : 2 x 100%, Cap. : 1,400L/hr, H : 5bar(g))
DCS Operation : NaOCl dosing pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
Chemical Injection Point:
NaOCl dosing set is provided for process injection to (By Manual operation)
a) Line mixer for UF Backwash(P0GBP21AM001) by P0GCN21AP001&P0GCN22AP001
b) Line mixer for UF CIP(P0GBP52BB001) by P0GCN21AP001&P0GCN22AP001
c) Mixing Tee for Potable water by P0GCN61AP001&P0GCN62AP001
The manual duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
4.33 SBS Dosing Tank (P0GBN71BB001, Q’ty : 1 x 100%, Cap. : 1m3)
Instrument with Logic Description:
No
Cause
1
Low level (LS P0GBN71CL080) of SBS SBS dosing pump trip (P0GBN63AP001 &
dosing tank
Consequences
P0GBN64AP001).
If not low (Last for 2minutes) pump start.
2
Middle level (LS P0GBN71CL080) of SBS Agitator trip (P0GBN72AM001).
dosing tank
If not middle (Last for 2minutes) agitator start.
4.34 SBS Dosing Pump (P0GBN63AP001&P0GBN64AP001, Q’ty : 2 x 100%, Cap. : 25L/hr, H : 5bar(g))
DCS Operation : SBS dosing pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
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Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
Instrument with Logic Description:
No
Cause
1
Low or High ORP (AE P0GCF21CQ002) of ORP control according to the set value.
SWRO feed pump discharge
Consequences
If not low or high (Last for 2minutes) pump trip.
Chemical Injection Point:
SBS dosing set is provided for ORP control injection to (By automatic operation)
a) Line mixer for SWRO(P0GBF21AM001)
The manual duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
4.35 Anti-Scalant Dosing Tank (P0GBN91BB001, Q’ty : 1 x 100%, Cap. : 1.5m3)
Instrument with Logic Description:
No
Cause
1
Low level (LS P0GBN91CL080) of Anti- Anti-Scalant dosing pump trip
Scalant dosing tank
Consequences
(P0GBN93AP001 & P0GBN94AP001,
P0GCN61AP001 & P0GCN62AP001).
If not low (Last for 2minutes) pump start.
2
Middle level (LS P0GBN71CL080) of Anti- Agitator trip (P0GBN92AM001).
Scalant dosing tank
If not middle (Last for 2minutes) agitator start.
4.36 Anti-Scalant Dosing Pump (P0GBN93AP001 & P0GBN94AP001, Q’ty : 2 x 100%, Cap. : 30L/hr,
H : 5bar(g) / P0GCN61AP001 & P0GCN62AP001, Q’ty : 2 x 100%, Cap. : 7L/hr, H : 5bar(g))
DCS Operation : Anti-Scalant dosing pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
Chemical Injection Point:
Anti-Scalant dosing set is provided for process injection to (By Manual operation)
a) Line mixer for SWRO(P0GBF21AM001) by P0GBN93AP001 & P0GBN94AP001
b) Line mixer for BWRO(P0GCF21AM001) by P0GCN61AP001 & P0GCN62AP001
The manual duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
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4.37 RO CIP Tank (P0GBP51BB001, Q’ty : 1 x 100%, Cap. : 12m3)
Instrument with Logic Description:
No
Cause
1
Low level (LS P0GBP51CL080) of RO CIP RO CIP pump trip (P0GBP61AP001 &
tank
Consequences
P0GBP62AP001).
If not low (Last for 2minutes) pump start.
2
Middle level (LS P0GBP51CL080) of RO CIP Agitator trip (P0GBP22AM001).
tank
3
If not middle (Last for 2minutes) agitator start.
High temp. (TT P0GBP51CT001) of RO CIP Electric heater trip (P0GBP51AH001).
tank
If not high (Last for 2minutes) electric heater start.
4.38 RO CIP Pump (P0GBP61AP001 & P0GBP62AP001, Q’ty : 2 x 100%, Cap. : 300m3/hr, H : 3bar(g))
DCS Operation : RO CIP pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
Chemical Injection Point:
CIP chemical dosing set is provided for process injection to (By Manual operation)
a) SWRO unit (P0GBF61AT001 & P0GBF62AT001)
b) BWRO unit (P0GCF51AT001 & P0GCF52AT001)
c) EDI unit (P0GCF81BB001 & P0GCF82BB001)
The manual duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
Kind of Chemicals for CIP
No
Organic substances
Inorganic substances
Remark
1
NaOH (Concentration 0.1%)
Citric acid(C6H8O7) (Concentration 2%)
For RO Unit
2
NaOH (Concentration 1%)
HCL (Concentration 2%)
For EDI Unit
& NaCl (Concentration 5%)
& NaCl (Concentration 5%)
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OPERATION & CONTROL PHILOSOPHY-WTP
4.39 UF CIP Tank (P0GBP52BB001, Q’ty : 1 x 100%, Cap. : 12m3)
Instrument with Logic Description:
No
Cause
Consequences
1
Low level (LS P0GBP52CL080) of UF CIP UF CIP pump trip (P0GBP63AP001 &
tank
P0GBP64AP001).
If not low (Last for 2minutes) pump start.
2
Middle level (LS P0GBP52CL080) of UF CIP Agitator trip (P0GBP23AM001).
tank
3
If not middle (Last for 2minutes) agitator start.
High temp. (TT P0GBP52CT001) of UF CIP Electric heater trip (P0GBP52AH001).
tank
If not high (Last for 2minutes) electric heater start.
4.40 UF CIP Pump (P0GBP63AP001 & P0GBP64AP001, Q’ty : 2 x 100%, Cap. : 302m3/hr, H : 3bar(g))
DCS Operation : UF CIP pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
Chemical Injection Point:
CIP chemical dosing set is provided for process injection to (By Manual operation)
a) UF unit (P0GBB61AT001 & P0GBB62AT001)
The manual duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
Kind of Chemicals for CIP
No
Organic substances
Inorganic substances
Remark
1
NaOCl (Concentration 0.3%)
Citric acid(C6H8O7) (Concentration 3%)
or HCl (Concentration 0.3%)
For UF Unit
4.41 NaHCO3 Dosing Tank (P0GCN31BB001, Q’ty : 1 x 100%, Cap. : 1.8m3)
Instrument with Logic Description:
No
Cause
Consequences
1
Low level (LS P0GCN31CL001) of NaHCO3 NaHCO3 dosing pump trip (P0GCN41AP001 &
dosing tank
P0GCN42AP001).
If not low (Last for 2minutes) pump start.
2
Middle
level
(LS
NaHCO3 dosing tank
P0GCN31CL001)
of Agitator trip (P0GCN32AM001).
If not middle (Last for 2minutes) agitator start.
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OPERATION & CONTROL PHILOSOPHY-WTP
4.42 NaHCO3 Dosing Pump (P0GCN41AP001 & P0GCN42AP001, Q’ty : 2 x 100%, Cap. : 50L/hr, H : 5bar(g))
DCS Operation : NaHCO3 dosing pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
Instrument with Logic Description:
No
Cause
Consequences
1
Low or High Conductivity
Conductivity control according to the set value.
(AE
P0GBF22CQ002)
of
SWRO
unit If not low or high (Last for 2minutes) pump trip.
discharge
Chemical Injection Point:
NaHCO3 dosing set is provided for Conductivity control injection to (By automatic operation)
a) Line mixer for Potable water(P0GBF22AM001)
The manual duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
4.43 CaCl2 Dosing Tank (P0GCN33BB001, Q’ty : 1 x 100%, Cap. : 1.8m3)
Instrument with Logic Description:
No
Cause
1
Low level (LS P0GCN33CL001) of CaCl2 CaCl2 dosing pump trip (P0GCN43AP001 &
dosing tank
Consequences
P0GCN44AP001).
If not low (Last for 2minutes) pump start.
2
Middle level (LS P0GCN33CL001) of CaCl2 Agitator trip (P0GCN34AM001).
dosing tank
If not middle (Last for 2minutes) agitator start.
4.44 CaCl2 Dosing Pump (P0GCN43AP001 & P0GCN44AP001, Q’ty : 2 x 100%, Cap. 50L/hr, H : 5bar(g))
DCS Operation : CaCl2 dosing pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
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OPERATION & CONTROL PHILOSOPHY-WTP
Instrument with Logic Description:
No
Cause
Consequences
1
Low or High Conductivity
Conductivity control according to the set value.
(AE
P0GBF22CQ002)
of
SWRO
unit If not low or high (Last for 2minutes) pump trip.
discharge
Chemical Injection Point:
CaCl2 dosing set is provided for Conductivity control injection to (By automatic operation)
a) Line mixer for Potable water(P0GBF22AM001)
The manual duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
4.45 Brine Storage Pond (P0GBB76BB001 & P0GBB77BB001, Q’ty : 2 x 50%, Cap. 219m3)
Instrument with Logic Description:
No
Cause
Consequences
1
Low level (LIT P0GBB76CL001 &
Backwash waste transfer pump trip
P0GBB77CL001) of Brine storage pond
(P0GBB78AP001 & P0GBB79AP001).
If not low (Last for 2minutes) pump start.
4.46 Backwash Waste Transfer Pump (P0GBB78AP001 & P0GBB79AP001, Q’ty : 2 x 100%, Cap. 300m3/hr,
H : 3bar(g))
DCS Operation : Backwash waste transfer pump operated through DCS in auto mode operation.
Manual Mode Operation : In manual operation mode, each pump can be started and stopped manually
through DCS in manual mode operation.
Auto Mode Operation : In auto operation mode, duty pump start and trip automatically based on process
condition (Level, Flow, Pressure etc).
The manual duty /standby changeover will be triggered by:
-
The duty pump fails to start.
-
When the start signal of the duty pump is not feed back.
27
OPERATION & CONTROL PHILOSOPHY-WTP
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Set Point Summary
P&ID
Tag No.
Service
Consequence
Set Point
(Note 2)
Page
LIT01 of 24
P0GBB11CL001 &
Level of Settlement Basin
P0GBB12CL001
01 of 24
02 of 24
AE-
Turbidity at outlet of MMF feed
P0GBB31CQ001
pump
FITP0GBB51CF001 &
P0GBB52CF001
PDIT-
02 of 24
P0GBB51CP001 &
P0GBB52CP001
03 of 24
PITP0GBB61CP001 &
P0GBB61CP002
04 of 24
PITP0GBB62CP001 &
P0GBB62CP002
04 of 24
05 of 24
AE-P0GBB61CQ001
LITP0GBB71CL001 &
P0GBB72CL001
05 of 24
AEP0GBB21CQ001
05 of 24
05 of 24
2600mm (H)
Action by control logic
1400mm (L)
Action by control logic
700mm (LL)
Alarm
10 NTU (H)
Alarm
Operation 486 m3/hr
Flowrate at outlet of MMF feed
535m3/hr (H)
pump
3
Alarm,
438m /hr (L)
Action by control logic
Differential Pressure of Multi
1.0barg (HH)
Alarm
media filter
0.8barg (H)
Action by control logic
of UF unit (Differential pressure
1.8barg (HH)
Alarm
is automatically calculated by
1.5barg (H)
Action by control logic
of UF unit (Differential pressure
1.8barg (HH)
Alarm
is automatically calculated by
1.5barg (H)
Action by control logic
0.5 NTU (H)
Alarm
4400mm (HH)
Alarm
Level of Filtered water storage
4200mm (H)
Action by control logic
pond
1400mm (L)
Action by control logic
1200mm (LL)
Alarm
Operation 7.5
Action by control logic
8.5 (H)
Alarm
6.5 (L)
Alarm
Operation below
Action by control logic
Pressure at suction and discharge
each PIT)
Pressure at suction and discharge
each PIT)
Turbidity at outlet of UF unit
pH at outlet of SWRO feed pump
AE-
ORP at outlet of SWRO feed
P0GBF21CQ001
pump
AE-
Conductivity at outlet of SWRO
P0GBF21CQ003
feed pump
300mV
350 mV (H)
Alarm
57000㎲/㎠(H)
Alarm
Operation 2.5barg
05 of 24
PIT-
Pressure at discharge of UF
P0GBP11CP001
backwash pump
28
3barg (H)
Alarm
2barg (L)
Action by control logic
OPERATION & CONTROL PHILOSOPHY-WTP
P&ID
Tag No.
Doc. No. : J910-XS01-P0GBB-125727
Rev : 0
Service
Consequence
Set Point
(Note 2)
Page
06 of 24
LITP0GBB81CL001
Level of Filter backwash tank
12700mm (HH)
Alarm
12500mm (H)
Action by control logic
600mm (L)
Action by control logic
400mm (LL)
Alarm
Operation 3.0barg
06 of 24
06 of 24
PIT-
Pressure at discharge of Filter
P0GBP31CP001
backwash pump
PDIT-
Differential Pressure of Micro
P0GBF31CP001
cartridege filter for SWRO unit
PIT06 of 24
3.5barg (H)
Alarm
2.5barg (L)
Action by control logic
0.8barg (H)
Alarm
Operation 5.0barg
P0GBF41CP001 &
Pressure at discharge of SWRO
P0GBF42CP001 &
water feed pump
6.0barg (H)
P0GBF43CP001
Alarm
4.0barg (L)
Action by control logic
3
06 of 24
FITP0GBF41CF001 &
P0GBF42CF001
Operation 462 m /hr
Flowrate at outlet of SWRO high
510m3/hr (H)
pressure pump
3
420m /hr (L)
Alarm
Alarm
Operation 51barg
07 of 24
PIT-
Pressure at discharge of SWRO
P0GBF61CP001
high pressure pump
56barg (H)
Action by control logic
46barg (L)
Action by control logic
Operation 50barg
07 of 24
07 of 24
PIT-
Pressure at discharge of SWRO
P0GBF61CP002
brine
FITP0GBF61CF001
Flowrate at outlet of SWRO unit
55barg (H)
Alarm
45barg (L)
Alarm
Operation 194 m3/hr
Action by control logic
213m3/hr (H)
Alarm
175m3/hr (L)
Alarm
Operation 51barg
08 of 24
PIT-
Pressure at discharge of SWRO
P0GBF62CP001
high pressure pump
56barg (H)
Action by control logic
46barg (L)
Action by control logic
Operation 50barg
08 of 24
08 of 24
PIT-
Pressure at discharge of SWRO
P0GBF62CP002
brine
FITP0GBF62CF001
Flowrate at outlet of SWRO unit
55barg (H)
Alarm
45barg (L)
Alarm
Operation 194 m3/hr
Action by control logic
213m3/hr (H)
Alarm
3
175m /hr (L)
29
Alarm
Doc. No. : J910-XS01-P0GBB-125727
Rev : 0
OPERATION & CONTROL PHILOSOPHY-WTP
P&ID
Tag No.
Service
Consequence
Set Point
(Note 2)
Page
09 of 24
09 of 24
09 of 24
09 of 24
09 of 24
AE-
Conductivity at outlet of SWRO
600㎲/㎠(HH)
Alarm
P0GBF61CQ001
unit
550㎲/㎠(H)
Action by control logic
AE-
pH at outlet of SWRO unit
8.5 (H)
Alarm
P0GBF22CQ001
(for service & potable water)
6.5 (L)
Alarm
AE-
Conductivity at outlet of SWRO
1000㎲/㎠(H)
Alarm
P0GBF22CQ002
unit (for service & potable water)
500㎲/㎠(L)
Alarm
AE-
ORP at outlet of SWRO unit
400 mV (H)
Alarm
P0GBF22CQ003
(for potable water)
200 mV (L)
Alarm
4900mm (HH)
Alarm
Level of SWRO permeate water
4700mm (H)
Action by control logic
storage tank
600mm (L)
Action by control logic
400mm (LL)
Alarm
0.8barg (H)
Alarm
Operation 7.5
Action by control logic
8.5 (H)
Alarm
6.5 (L)
Alarm
LITP0GBF71CL001 &
P0GBF72CL001
10 of 24
10 of 24
PDIT-
Differential Pressure of micron
P0GCF31CP001
cartridege filter
AEP0GCF31CQ001
pH at outlet of BWRO feed pump
Operation 2.5 barg
10 of 24
PIT-
Pressure at discharge of BWRO
P0GCF31CP002
feed pump
3barg (H)
Alarm
2barg (L)
Action by control logic
Operation 13.5 barg
11 of 24
PIT-
Pressure at discharge of BWRO
P0GCF51CP001
high pressure pump
16barg (H)
Action by control logic
10barg (L)
Action by control logic
Operation 8.5 barg
11 of 24
PIT-
Pressure at discharge of BWRO
P0GBF51CP002
brine
10barg (H)
Alarm
7barg (L)
Alarm
3
11 of 24
FITP0GCF51CF001
Flowrate at outlet of BWRO unit
Operation 88 m /hr
Action by control logic
96m3/hr (H)
Alarm
3
80m /hr (L)
Alarm
Operation 13.5 barg
12 of 24
PIT-
Pressure at discharge of BWRO
P0GCF52CP001
high pressure pump
16barg (H)
Action by control logic
10barg (L)
Action by control logic
Operation 8.5 barg
12 of 24
PIT-
Pressure at discharge of BWRO
P0GBF52CP002
brine
30
10barg (H)
Alarm
7barg (L)
Alarm
Doc. No. : J910-XS01-P0GBB-125727
Rev : 0
OPERATION & CONTROL PHILOSOPHY-WTP
P&ID
Tag No.
Service
Consequence
Set Point
(Note 2)
Page
12 of 24
FITP0GCF52CF001
12 of 24
13 of 24
Flowrate at outlet of BWRO unit
Operation 88 m3/hr
Action by control logic
96m3/hr (H)
Alarm
80m3/hr (L)
Alarm,
AE-
Conductivity at outlet of BWRO
20㎲/㎠(HH)
Alarm
P0GCF51CQ001
unit
15㎲/㎠(H)
Action by control logic
7700mm (HH)
Alarm
LIT-
Level of BWRO permeate water
7500mm (H)
Action by control logic
P0GCF61CL001
storage tank
800mm (L)
Action by control logic
600mm (LL)
Alarm
3
Operation 88 m /hr
13 of 24
FIT-
Flowrate at outlet of EDI feed
P0GCF71CF001
pump
96m3/hr (H)
Alarm
3
80m /hr (L)
Action by control logic
Operation 3.5 barg
13 of 24
PIT-
Pressure at discharge of flushing
P0GBP41CP001
pump
AE15 of 24
P0GCF81CQ001
AE-
15 of 24
P0GCF81CQ002
AE-
15 of 24
P0GCF81CQ003
AE-
15 of 24
P0GCF81CQ004
4.5barg (H)
Alarm,
2.5barg (L)
Action by control logic
0.2㎲/㎠(HH)
Alarm
0.18㎲/㎠(H)
Action by control logic
8.5 (H)
Alarm
6.5 (L)
Alarm
0.02ppm(HH)
Alarm
0.015ppm(H)
Action by control logic
0.02ppm(HH)
Alarm
Conductivity at outlet of EDI unit
pH at outlet of EDI unit
Silica at outlet of EDI unit
Sodium at outlet of EDI unit
0.015ppm(H)
Action by control logic
3
Operation 84 m /hr
15 of 24
FITP0GCF81CF001
Flowrate at outlet of EDI unit
92m3/hr (H)
3
16 of 24
16 of 24
17 of 24
LSP0GBN11CL001
LSP0GBN13CL001
LSP0GBN41CL080
Level of H2SO4 bulk storage tank
Level of NaOH bulk storage tank
Level of H2SO4 dosing tank
31
Alarm,
76m /hr (L)
Alarm
2800mm (H)
Alarm
300mm (L)
Action by control logic
150mm (LL)
Alarm
2850mm (H)
Alarm
350mm (L)
Action by control logic
200mm (LL)
Alarm
850mm (HH)
Alarm
700mm (H)
Action by control logic
250mm (L)
Action by control logic
130mm (LL)
Alarm
Doc. No. : J910-XS01-P0GBB-125727
Rev : 0
OPERATION & CONTROL PHILOSOPHY-WTP
P&ID
Tag No.
Service
Consequence
Set Point
(Note 2)
Page
17 of 24
LSP0GBN43CL080
Level of NaOH dosing tank
LS18 of 24
P0GBN81CL080 &
Level of FeCl3 dosing tank
P0GBN82CL080
19 of 24
19 of 24
LSP0GCN11CL080
LSP0GBN71CL080
20 of 24
LSP0GBN91CL080
21 of 24
LSP0GBP51CL080
TT21 of 24
P0GBP51CT001
AE-
21 of 24
21 of 24
21 of 24
P0GBP61CQ001
Level of RO CIP tank
Temperature of RO CIP tank
pH at outlet of RO CIP tank
P0GBP71CP001
cartridege filter
LS-
P0GBP52CT001
AEP0GBP63CQ001
PDIT-
21 of 24
Level of Anti-Scalant dosing tank
Differential Pressure of RO CIP
TT-
21 of 24
Level of SBS dosing tank
PDIT-
P0GBP52CL080
21 of 24
Level of NaOCl dosing tank
P0GBP72CP001
Level of UF CIP tank
Temperature of UF CIP tank
pH at outlet of UF CIP tank
Differential Pressure of UF CIP
cartridege filter
32
850mm (HH)
Alarm
700mm (H)
Action by control logic
250mm (L)
Action by control logic
130mm (LL)
Alarm
900mm (H)
Alarm
300mm (L)
Action by control logic
180mm (LL)
Alarm
900mm (H)
Alarm
300mm (L)
Action by control logic
180mm (LL)
Alarm
900mm (H)
Alarm
600mm (M)
Action by control logic
300mm (L)
Action by control logic
180mm (LL)
Alarm
1000mm (H)
Alarm
600mm (M)
Action by control logic
300mm (L)
Action by control logic
180mm (LL)
Alarm
2250mm (H)
Alarm
800mm (M)
Action by control logic
600mm (L)
Action by control logic
480mm (LL)
Alarm
38℃ (HH)
Alarm
35℃ (H)
Action by control logic
2 to 3
Inorganic cleaning
10 to 12
Organic cleaning
0.8barg (H)
Alarm
2250mm (H)
Alarm
800mm (M)
Action by control logic
600mm (L)
Action by control logic
480mm (LL)
Alarm
38℃ (HH)
Alarm
35℃ (H)
Action by control logic
2 to 3
Inorganic cleaning
10 to 12
Organic cleaning
0.8barg (H)
Alarm
OPERATION & CONTROL PHILOSOPHY-WTP
P&ID
Tag No.
Service
Doc. No. : J910-XS01-P0GBB-125727
Rev : 0
Consequence
Set Point
(Note 2)
Page
22 of 24
LSP0GCN31CL001
22 of 24
LSP0GCN33CL001
1300mm (H)
Alarm
600mm (M)
Action by control logic
300mm (L)
Action by control logic
180mm (LL)
Alarm
1300mm (H)
Alarm
600mm (M)
Action by control logic
300mm (L)
Action by control logic
180mm (LL)
Alarm
3050mm (H)
Alarm
500mm (L)
Action by control logic
300mm (LL)
Alarm
0.7m3/hr (H)
Alarm
0.7m3/hr (H)
Alarm
Pressure of Instrument air
4barg (L)
Alarm
Pressure of Service air
4barg (L)
Alarm
Level of NaHCO3 dosing tank
Level of CaCl2 dosing tank
LIT23 of 24
P0GBB76CL001 &
Level of Brine storage pond
P0GBB77CL001
23 of 24
23 of 24
FS-
Flow of Eye washer & Safety
P0GKC11CF080
shower
FS-
Flow of Eye washer & Safety
P0GKC12CF080
shower
PS24 of 24
P0GBY11CP080
PS-
24 of 24
P0GBY12CP080
Note
1. Actual set figure (point) will be derived based on the plant commissioning trials.
2. Refer to the para. 5. Control Logic Description
6.
Reference documents and drawings:
-
P & I Diagram(J910-XG02-P0GCF-125706)
-
Process Flow Diagram(J910-XG07-P0GCF-125705)
-
System Description(J910-XS00-P0GCF-125709)
-
GA Drawing for Sea Water Settlement Basin(J910-YT01-P0GBD-125704)
-
GA Drawing for Filtered Water Storage Tank(J910-YT01-P0GBD-125761)
-
GA Drawing for Brine Water Storage Pond (J910-YT01-P0GBD-125762)
33
1. THE MULTI MEDIA FILTER SHALL BE OPERATED AS PER SEQUENCE.
51AA052
MMF A UNIT
51AA053
MMF B UNIT
51AA062
11AA051
52AA052
52AA058
52AA055
52AA062
11AA052
52AA059
(P0GBN-)
FECL3 DOSING PUMP
(P0GBN-)
NAOH DOSING PUMP
(P0GBP-)
(P0GBC-)
FILTER BACKWASH BLOWER
(P0GBB-)
MMF FEED PUMP
(P0GBB-)
BACKWASH TANK INLET
(P0GBB-)
RINSE OUTLET
(P0GBB-)
(P0GBB-)
WATER BACKWASH INLET
VENT
WATER BACKWASH OUTLET
51AA056
51AA057
54AA051
REMARK
51AA055
51AA063
51AA060
52AA053
App.24hr
51AA059
51AA054
●
NOMINAL SERVICE
PUMP & BLOWER
51AA058
53AA051
52AA054
1
(P0GBB-)
(P0GBB-)
AIRBACKWASH INLET
DRAIN
(P0GBB-)
FLOW
SERVICE OUTLET
TIME
(MIN)
(P0GBB-) (P0GBB-)
PROCESS
(P0GBB-)
STEP
SERVICE INLET
VALVE
FILTER BACKWASH PUMP
*Table
52AA063
52AA060
52AA056
51AA061
53AA052
31AP001
11AN001
31AP001
55AP001
83AP001
32AP001
12AN001
32AP001
56AP001
84AP001
■
■
52AA061
52AA057
■
●
500m3/hr
●
2
DRAIN
▲
-
3
AIR BACKWASH
10
505Nm3/hr
4
WATER BACKWASH
10
350m3/hr
5
SETTING
5
-
6
RINSE
15
170m3/hr
7
AIR BACKWASH
10
505Nm3/hr
8
WATER BACKWASH
10
350m3/hr
9
SETTING
5
-
10
RINSE
15
170m3/hr
11
AIR BACKWASH
10
505Nm3/hr
12
WATER BACKWASH
10
350m3/hr
13
SETTING
5
-
14
RINSE
15
170m3/hr
15
STAD-BY
-
●
●
●
■
●
●
FIRST CELL
■
●
FIRST CELL
FIRST CELL
●
●
●
■
■
■
■
●
●
SECOND CELL
■
●
FIRST CELL
SECOND CELL
SECOND CELL
●
●
●
■
■
■
■
●
●
THIRD CELL
■
●
SECOND CELL
THIRD CELL
THIRD CELL
●
-
A.
LEGEND : ● VALVE OPEN, ■ PUMP RUN, ▲ TIME FIELD SETTING
B.
THE SEQUENCE TIME WILL BE FIXED DEPENDING ON THE FIELD CONDITIONS.
●
■
■
■
THIRD CELL
2. UF UNIT SHALL BE OPERATED AS PER SEQUENCE.
UF UNIT
NORMAL
SERVICE
61AA051
61AA056
●
61AA053
61AA059
61AA061
61AA058
FILL-UP
35
479m3/hr
●
SERVICE
30 min
479m3/hr
●
WATER BACKWASH
45
580m3/hr
●
AIR BACKWASH
60
505m3/hr
●
DRAIN
45
-
●
PRE BACKWASH
20
580m3/hr
●
●
BACKWASH
45
580m3/hr
●
●
20 min
-
●
AIR BACKWASH
60
505Nm3/hr
●
DRAIN
45
-
●
WATER BACKWASH
30
580m3/hr
●
AIR BACKWASH
30
505Nm3/hr
●
DRAIN
45
-
●
SOAKING
61AA060
A.
LEGEND : ● VALVE OPEN, ■ PUMP RUN,
B.
TMC INTERVAL : ONE TIME PER DAY
C.
THE SEQUENCE TIME WILL BE FIXED DEPENDING ON THE FIELD CONDITIONS.
(P0GBN-)
11AP001
11AN001
61AP001
12AP001
12AN001
62AP001
●
■
●
■
●
●
●
●
■
■
■
■
■
●
TMC
RINSE
NAOCL DOSING PUMP
(P0GBC-)
(P0GBP-)
FILTER BACKWASH PUMP
(P0GBB-)
DRAIN OUTLET
(P0GBB-)
WATER BACKWASH INLET
VENT
PUMP & BLOWER
(P0GBB-)
(P0GBB-)
AIRBACKWASH INLET
(P0GBB-)
SERVICE OUTLET
FLOW
(P0GBB-)
(sec)
PRE SERVICE &
TIME
BACKWASH OUTLET
PROCESS
(P0GBB-)
STEP
SERVICE INLET
VALVE
FILTER BACKWASH BLOWER
*Table
●
●
■
●
■
●
●
●
REMARK