Purified Water -Design qualification pretreatment, generation system
To design the equipment / instrument in conjunction with the design data in order to provide basis for vendor, manufacturer & / or the design engineer for designing the system when the project begins.
To prepare detailed specification for all major components of Equipment / instrument to ensure that the User Requirement Specification and functional requirement specification are achieved.
Purified water SCOPE
Application to any equipment, system, facility, process & software programs.
When subjected for new installation
When the existing system is replaced with the new system.
When the existing system is subjected for up-gradation or modification.
All URS and FRS shall be defined by the user department in consultation with the engineering department, which should be finalized and mutually discussed with the system supplier, vendor & or manufacturer.
The design qualification is essential part of the qualification mechanism and will serve as a basic document for the Validation Activity.
ABBREVIATIONS
- URS: User Required Specification
- FRS: Functional Required Specification
- SMBS: Sodium Meta bisulfate
- ADS: Antiscalent dosing System
- RO: Reverse Osmosis
- EDI: Electro-Deionization
- CIP: Cleaning In Place
- Ppm: Mg/Liters OR Parts Per Million
- CFU/ml: Colony Forming Unit per ml
- TSS: Total Suspended Solids
- TDS: Total Dissolved Solids
- TOC: Total Organic Carbon
- TVC: Total Viable Count
- TBC: Total Bacterial Count
- P&ID: Process Flow & Instrumentation Diagram
- LPH: Liters per Hour
- PLC: Programmable Logical Controls
- MMI: Manual Machine Interface
- ORP: Oxidation Reduction Potential
- MOC: Material of Construction
- FRP: Fiber Reinforced Plastic
- HDPE : High Density Poly Ethylene
ACCEPTANCE CRITERIA
PURIFIED WATER GENERATION SYSTEM
Equipment / Utility system shall confirm to specifications which are as per the user requirements/as per USP.
The Equipment / Utility / system shall confirm to the predetermined requirements and a certificate is issued by the projects / Engineering Department.
DESIGN BASIS
RAW WATER ANALYSIS
| Water Parameters | Design Consideration |
| Colour | < 5 CTU |
| pH | 6.5 – 8.5 |
| Conductivity (us/cm) | 1200 |
| Turbidity | Less than 5 |
| SDI | < 3 assumed |
| Total Dissolved Solids | 900 ppm |
| Total Alkalinity | 120 ppm |
| Total Hardness | 350 ppm |
| Calcium as CaCO3 | 125 ppm |
| Magnesium as CaCO3 | 225 ppm |
| Sodium as Na | 50 ppm |
| Potassium as K | 5 ppm |
| Sulphated as SO4 | 50 ppm |
| Nitrates as NO3 | 10 ppm |
| Chlorides as Cl | 100 ppm |
| Fluoride | 1 ppm |
| Colloidal Silica | 10 ppm |
| Reactive Silica | 10 ppm |
| TOC | 1000 ppb |
| Total Plate Count | 1000 CFU/ml |
(Note. Feed Water is free from pathogens like E- Coli, Pseudonymous, Salmonella)
Type of operation: manual operation
No. Of hrs. 20 hrs.
OBR: 76 m3
Quantity: 3.8 m3/hr.
End use: purified water generation system
For softener
Type of operation: manual operation
Quantity of water: 7 m3/hr.
End use: softener
For pressure quartz filter
Pretreatment & purified water generation system
(Note. 1. Feed water is free from pathogens like e- coli, pseudonymous, and salmonella)
Type of operation: fully auto & manual operation
Over all recovery: 70 %
Permeate flowrate: 2700 LPH
Reject flowrate: 1100 LPH
Feed flowrate: 3800 LPH
First pass RO system (hot water subitizable)
Second pass RO system (hot water subitizable)
Feed flowrate: 2700 LPH
Reject recycle flowrate: 500 LPH
Permeate flowrate: 2200 LPH
Over all recovery: 80 %
Type of operation: fully auto & manual operation
For EDI system
Feed flowrate: 2200 LPH
Permeate flowrate: 2000 LPH
Reject flowrate: 200 LPH
Type of operation: fully auto & manual operation
Overall recovery: 90 %
Treated water quality
Stage wise treated water quality after RO: (on basis of maximum feed water limiting condition)
| Water Parameter | Outlet of Multi Grade Filter | Outlet of Softener | Outlet of RO Pass I | Outlet of RO Pass II |
| Ph | 6 to 8.5 | 6 to 8.5 | 5 – 6 | 5 – 6 |
| TSS | < 5 ppm | < 5 ppm | Nil | Nil |
| TDS / Conductivity | 1920 us/cm | 1920 us/cm | 200 us/cm | 25 us/cm |
| Total Hardness ( in ppm) | 350 ppm | Less than 5 ppm | Nil | Nil |
| SDI | < 3 | 3.0 max | Nil | Nil |
| TOC | 1000 ppb | 1000 ppb | 500 ppb | 200 ppb |
| TVC | 1000 CFU/ml | 1000 CFU/ml | 100 CFU/ml | 50 CFU/ml |
TREATED WATER QUALITY AFTER UF : ( as per ‘Design Limits’) (PURIFIED WATER AS PER USP std.)
| Water Parameters | USP | Action Limit | Alert Limit | Design Limit |
| Conductivity | 1.25 µs/cm | 1.0 µs/cm | 0.8 µs/cm | 0.7 µs/cm |
| TOC in PPB | 500 ppb | 300 ppb | 200 ppb | 100 ppb |
| TVC / TBC Microbial Count | 100 CFU/ml | 90 CFU/ml | 70 CFU/ml | 40 CFU/ml |
Conductivity meter with Alarm
Hot Water Subitizable Electro – Deionization Unit
POST TREATMENT:
Conductivity meter with Alarm
Reverse Osmosis Membranes along with High Pressure Housing
RO High Pressure Pump
SECOND PASS REVERSE OSMOSIS (HOT WATER SANITIZABLE) SYSTEM:
Conductivity Meter with Alarm
Reverse Osmosis Membranes along with High Pressure Housing
Pre Sodium Hypo Chlorite Dosing System
Raw Water Pumps
Multi Grade Filter
Softener Unit
FIRST PASS REVERSE OSMOSIS (HOT WATER SANITIZABLE) SYSTEM:
SMBS Dosing System
Antiscalent Dosing System
pH Correction System
5 – Micron Cartridge Filter
ORP Analyzer and pH sensor along with auto Dumping Valve
RO High Pressure Pump
Note: With the change in the incoming water parameters, the treated water quantity & quality may get affected at different stages of the plant.
RESPONSIBILTY
User Dept. : For providing user requirement (Technical and cGMP)
Head-Operations : To review the specification from installation and Maintenance aspects.
Head-Quality : To review the specification from GMP Aspects
Vendor : To review and agree upon the requirements.
SYSTEM DESCRIPTION (SYSTEM AND SUB-SYSTEM)
The Fully Automated PLC based Purified Water Generation system generate 2 m3/hr. of Purified water as Per USP Standards.
SCHEME:
PRETREATMENT & PURIFIED WATER GENERATION SYSTEM:
PRE TREATMENT: (3800 LPH)
SYSTEM DESCRIPTION:
Raw water before Raw Water Tank is dosed with Sodium Hypochlorite 1 – 2 ppm. Raw water feed pump will feed raw water from the raw water storage tank to Multi Grade Filter @ 7000 LPH.
Multi Grade Filter is a vertical down flow vessel containing pure graded silex quartz as a filtering media. The vessel is fabricated in FRP. The water generated at the outlet of Multi Grade Filter will have suspended solids less than 5 ppm. Multi Grade Filter is provided with Manual Backwash. We have provided manual ball valves of for change over from normal operation to Backwash operation.
(Note that the inlet suspended solid load should not be more than 50 ppm).
The water from Multi Grade Filter is passed through Softener. Hardness after softener is less than 5 ppm. Soft Water after Softener unit is fed to Purified Water Generation System.
Sodium Metabisulphite (Na2S2O5) is then dosed in the chlorinated water to neutralize the free chlorine (excess chlorine) present in the filtered water.
Antiscalent Dosing System is then dosed in the soft water to avoid scale formation on the RO Membranes.
pH Correction Dosing System is provided to adjust the feed pH of RO feed water as 6.5 – 8.5. The treated water is then passed through 5 micron Cartridge Filter to trap the suspended solids. This will avoid chocking of RO membranes due to suspended solids.
ORP Analyzer is provided so as to check the absence/presence of chlorine in the feed water to the RO System. If free chlorine is sensed in the feed water it will give an indication on the panel & open the dumping valve and dump the high ORP water for 300 secs. & Even if the ORP value is not below the set point it will trip the system.
This soft water is then fed to the Reverse Osmosis First pass System by means of a High Pressure Vertical multistage Pump with SS 304 wettable parts of M/s. Grundfos, Denmark. The First pass Reverse Osmosis System will generate 2700 liters/hr. water with an overall recovery of 70 %. The generated water will have total dissolved solids less than 150 ppm. The semi-permeable reverse osmosis membrane has molecular weight cut off less than 150 MWCO. The Reveres Osmosis membrane acts as positive barrier to remove dissolved solids, organic compounds & bacteria.
The Reverse Osmosis System consists of thin film composite type Reverse Osmosis membrane of DOW. The material of construction of the RO membrane is Polyamide. The RO membrane is housed in the High Pressure SS 316L Wettable Parts Housing having TC end connection.
The outlet water of RO pass one is feed to RO pass two system. The Second pass Reverse Osmosis System will generate 2200 liters/hr. of water with an overall recovery of 80%. The generated water will have total dissolved solids less than 15-20 ppm.
The Reverse Osmosis System consists of thin film composite type Reverse Osmosis membrane of DOW. The material of construction of the RO membrane is Polyamide. The RO membrane is housed in the High Pressure SS 316L Wettable Parts Housing having TC end connection.
The Permeate water from RO system will be fed to the Electro Deionization Unit (EDI) having designed capacity of 2000 LPH. The EDI system has a recovery of 90%.
The water generated from the outlet of EDI will be as per USP Standards for Purified Water.
BASIS OF DESIGN AND ASSUMPTION
FEED WATER SAMPLE:
The system design is based on the feed water analysis provided by the customer as per Annexure A..
PRODUCT WATER QUALITY:
STAGE WISE TREATED WATER PARAMETER: (On basis of maximum feed water limiting condition)
| Water Parameters | USP | Action Limit | Alert Limit | Design Limit |
| Conductivity | 1.25 µs/cm | 1.0 µs/cm | 0.8 µs/cm | 0.7 µs/cm |
| TOC in PPB | 500 ppb | 300 ppb | 200 ppb | 100 ppb |
| TVC / TBC Microbial Count | 100 CFU/ml | 90 CFU/ml | 70 CFU/ml | 40 CFU/ml |
Note: With the change in the incoming water parameters, the treated water quantity & quality may get affected at different stages of the plant.
FACILITY OPERATION:
The plant operation will be for 20 hrs./day; 6 days/week; 48 weeks/year
Technical specifications
Major equipment’s of pretreatment & purified water generation system:
Pre sodium hypochlorite dosing system
EQUIPMENT NAME: Pre Sodium Hypo Chlorite Dosing system
EQUIPMENT LOCATION: After Bore Well Pump
FUNCTION: For Bacterial Disinfection in raw water. These will inhibit the bacterial growth. Sodium Hypo chlorite dosed up to 2 ppm for disinfection.
TECHNICAL SPECIFICATION:
Type : Positive Displacement Pump/MOC of Dosing Tank :HDPE/Low Level Switch
DOSING CALCULATION:
Dosage required : 2 ppm
Feed Flow rate : 7 m3/hr.
Concentration of Solution : 1 %
Dosing Pump flow rate :1.4 LPH
Amount of dosing solution = 1.4 x 24 = 33.6 Liters.
1.EQUIPMENT NAME: Raw Water Pumps
EQUIPMENT LOCATION: After Raw Water Storage Tank
FUNCTION: For pumping of Raw water to Pretreatment @ 7 m3/hr.
TECHNICAL SPECIFICATION:
Type : Horizontal Multistage pump
Flow rate : 7 m3/hr. (7000 liter/hr.)
Material of Construction : SS 304.
2.EQUIPMENT NAME: Multi Grade Filter
EQUIPMENT LOCATION: After Sodium Hypo-chlorite Dosing System, Piping and Raw Water Tank.
FUNCTION: It filters the suspended solids in the Raw water up to 5 ppm with the help of Multi Grade Filter in the vessel, the inlet suspended solids should be less than 50 ppm.
Flow rate : 7 m3/hr.
Max. Working Pressure : 3.5 kg/cm2
Max. Pressure Drop : 0.5 kg/cm2
Diameter : 600 mm
Height : 1800 mm
Specific Velocity of Filtration: 25 m/hr.
Back Wash Time Required: 10-15 min.
Filter media: Pure Graded Silex Quartz of 1.5 to 2 mm Particle size.
Valve Type : Ball valve
MOC of Pressure Vessel : Fiber Reinforced Plastic (FRP)
Frontal Pipe Size : 38.1 mm
Pressure gauge : 100 mm Dial ( Inlet /Outlet )
MOC Piping : UPVC
Make of Piping : FIP
MOC of Valves : UPVC
Make of Valves : FIP
Inlet, Outlet, Drain Connection : 1.5” BSPF union ends.
Operation:
1.Normal Operation
2.Back Wash Operation
3.Rinse Operation
Normal Operation:
Since MGF is a Vertical Down Flow Vessel the Suspended Solids are removed by passing through Filtering Media which is been 60% filled. For normal operation position of Ball valves which are mounted on MGF should be In Open Position.
Back Wash Operation:
WHEN & WHY BACKWASH
Back Wash is used to remove the Suspended Matter which is entrapped in the filter Media Top Layer during Normal Operation. Back Wash is done after 20 hr OR if the differential pressure across the filter is more than 0.5 kg/cm2.
For changing from normal operation to backwash operation, the position of the Ball Valves should be In Open Position.
Rinse Operation:
WHEN & WHY BACKWASH
Rinse Operation is done after Back Wash. Rinse is done to remove the Suspended Solid which is entrapped in the Filter Media during Backwash Operation.
For changing from Back Wash operation to Rinse operation, the position of the Ball Valves should be In Open Position.
3. EQUIPMENT NAME : SOFTENER:
EQUIPMENT LOCATION: After Multi Grade Filter
FUNCTION: It will replace the hardness causing Ca & Mg ions with Na ions. This will soften the raw water and will avoid scale formation. Treated Water at the outlet of softener-II will have hardness less than 5 ppm. Flow totalizer will be provided at the outlet of softener unit to indicate the amount of soft water generated and give indication after pre define quantity of soft water is generated.
TECHNICAL SPECIFICATION:
Type : Vertical Up Flow /Flow rate : 3.8 m3/hr. /Max. Working Pressure : 4 kg/cm2
Diameter : 600 mm /Height on straight :1800 mm
Regeneration Time Required: 20-30 min./Fast Rinse : 5-10 Minutes /Resin Quantity: 450 liters.
Regenerator (NaCl): 72 Kgs. /Reg. Tank Capacity: 300 lts.
MOC of Reg .tank : HDPE /MOC of Softener : Fiber Reinforced Plastic (FRP)
Frontal Pipe Size : 38.1 mm /Valve : Ball valve
Pressure gauge : 100 mm Dial ( Inlet /Outlet ) /Frontal Piping : UPVC
Operation:
Normal Operation
Regeneration Operation
Slow Rinse Operation
Fast Rinse Operation
1. Normal Operation:
Since Softener is a Vertical UP Flow Vessel the Hardness causing Ions are removed by passing through Resin Media (Cation and Anion) which is been 92% filled of the Total Volume. For normal operation the position of the Ball valves should be In Open position.
After 12 hrs. of operation of the softening plant OR after 72 m3 of OBR the softener should go under regeneration mode or the hardness does not get maintain within its limit.
2.Regeneration Operation:
WHEN & WHY REGENERATION
Regeneration is used to recharge the Resin to regain its absorbing properties of hardness. Regeneration is done if the Hardness at the Outlet of Softener Unit is above 5 ppm OR after 72 m3 OBR / 12 hrs. of Operation of plant whichever is earlier. Flow Totalizer will be provided at the outlet of each softener unit to indicate the amount of soft water generated and give indication of Regeneration after pre define quantity of soft water generation.
For changing from normal operation to regeneration mode, the valve position should be In Open position.
Allow the softener to backwash completely.
Allow the brine solution to get completely charged in the softener.
Slow Rinse Operation:
Slow Rinse is used to get properly mix up with Salts & Resins.
Fast Rinse Operation: Fast Rinse is used to remove excess Salts from the resins.
EQUIPMENT NAME: Sodium Meta Bisulphate Dosing system
EQUIPMENT LOCATION: After Softener Unit
FUNCTION: 1 ppm of chlorine needs 2 ppm SMBS dosing. We have considered 2 ppm of chlorine so we have assumed 4 ppm of SMBS dosing. 6 ppm SMBS is dosed in soft water to neutralize the free chlorine in soft water.
(Note: ORP analyzer is provide with dumping valve to check & dump the high chlorinated water)
TECHNICAL SPECIFICATION:
Type : Positive Displacement Pump /MOC of Dosing Tank : SS 304/Low Level Switch
DOSING CALCULATION:
Dosage required : 4 ppm
Feed Flow rate : 3.8 m3/hr.
Concentration. of Solution : 1 %
Dosing Pump flow rate:1.52 LPH
If we consider 3 shifts of 8 hrs. = 8 x 3 = 24 hrs.
Amount of dosing solution = 1.52 x 24 = 36.48 Liters.
EQUIPMENT NAME: Anti Scalent Dosing System
EQUIPMENT LOCATION: After SMBS Dosing System
FUNCTION: ADS (5 ppm) is dosed in soft water to avoid scaling in RO membrane.
TECHNICAL SPECIFICATION:
Type : Positive Displacement Pump /Max. Working Pressure :5.5 kg/cm2
MOC of Dosing Tank : SS 304 /Low Level Switch
DOSING CALCULATION:
Dosage required : 5 ppm
Feed Flow rate : 3.8 m3/hr.
Conc. of Solution : 2 %
Dosing Pump flow rate:0.95 LPH
If we consider 3 shifts of 8 hrs. = 8 x 3 = 24 hrs.
Amount of dosing solution = 0.95 x 24 = 22.8 Liters.
EQUIPMENT NAME: pH Correction Dosing System
EQUIPMENT LOCATION: After Anti-scalent dosing system
FUNCTION: To boost up the pH of RO feed water so as to convert the dissolved CO2 into alkalinity and which can be rejected in RO Pass I.
TECHNICAL SPECIFICATION:
Type : Positive Displacement Pump /MOC of Dosing Tank : SS 304/Low Level Switch/pH Correction Chemical : NaOH or Na2CO3.
EQUIPMENT NAME: 5 – Micron Cartridge Filter
EQUIPMENT LOCATION: After SMBS / ADS / pHC Dosing Systems
FUNCTION: It filter all the suspended solids in water greater than 5 – micron thus avoid chocking in RO membrane.
TECHNICAL SPECIFICATION:
Type of Cartridge : Spun Bounded Type /Rating : 5 micron /Flow rate : 3800 LPH
MOC of Cartridge Housing :SS 304 /MOC of Cartridge : PP ( Polypropylene)
Surface Finish of Housing : Internally – < 0.4 Ra /Externally – mirror up to 180 grit
Type of Filter : Double open end filter
EQUIPMENT NAME: Reverse Osmosis High Pressure Pump
EQUIPMENT LOCATION: After 5-micron Cartridge Filter
FUNCTION: For pumping of water to RO pass-I system. @ 3.8 m3/hr.
TECHNICAL SPECIFICATION:
Type : Vertical Multistage Pump
Material of Construction : SS 304 Wettable parts
EQUIPMENT NAME: Reverse Osmosis Housing
EQUIPMENT LOCATION: After RO High Pressure – I
FUNCTION: RO membranes are housed in the housing.
TECHNICAL SPECIFICATION:
No. of Membranes in RO Housing: 4 Nos.
Material of Construction : SS 304
Diameter : 204 mm /Length : 4060 mm /Thickness : 2.5 mm
Surface Finish of RO Housing : Internally – < 0.4 Ra
Externally – mirror up to 180 grit
Maximum Flow rate for housing : 4000 LPH
Permeate flow rate from RO Pass I is 2.7 m3/hr.
EQUIPMENT NAME: RO High Pressure Pump – II
EQUIPMENT LOCATION: After RO pass – I
FUNCTION: For pumping of water to RO pass – II system.
TECHNICAL SPECIFICATION:
Type : Vertical Multistage Pump
Flow rate : 2.7 m3/hr. (2700 LPH)
Material of Construction : SS 316 wettable parts
EQUIPMENT NAME: Reverse Osmosis Membranes
EQUIPMENT LOCATION: Within the RO Housing
FUNCTION: RO membranes reduce the TDS & microbial load in the water. The semi-permeable reverse osmosis membrane has molecular weight cut off less than 150 MWCO. The Reverse Osmosis membrane acts as positive barrier to remove dissolved solids, organic compounds & bacteria. Membranes consist of thin film composite type. This will bring down the conductivity less than 25 μs/cm.
TECHNICAL SPECIFICATION:
No. of Membrane: 2 Nos.
Size of Membrane : 8” Dia. & 40” Long
Type of Membrane : Thin Film Composite
Type of sanitization : Hot water
Temperature of sanitization : 850 C
Material of Construction : Polyamide
Make of Membrane: DOW.
Operating Temperature : 450 C
Recovery : 80-85 %
Feed Water Flow Rate : 2.7 m3/hr.
Permeate Flow Rate : 2.2 m3/hr.
EQUIPMENT NAME: Reverse Osmosis Housing
EQUIPMENT LOCATION: After RO High Pressure – II
FUNCTION: RO membranes are housed in the housing.
TECHNICAL SPECIFICATION:
Material of Construction : SS 316L
Diameter : 204 mm /Length : 2040 mm /Thickness : 2.5 mm
Surface Finish of RO Housing : Internally – < 0.4 Ra
Externally – mirror up to 180 grit /Max Feed Flow rate : 3000 LPH.
EQUIPMENT NAME: Electro De-Ionization System
EQUIPMENT LOCATION: After RO pass II
FUNCTION: EDI bring down the conductivity of RO treated water. The water generated from the outlet of EDI will be as per USP.
EQUIPMENT NAME: Electro De-Ionization System
EQUIPMENT LOCATION: After RO pass II
FUNCTION: EDI bring down the conductivity of RO treated water. The water generated from the outlet of EDI will be as per USP.
TECHNICAL SPECIFICATION:
: Hot Water Sanitizable
Minimum Flow rate :1400 litres/hr /Maximum Flow rate : 4200 Litres/hr /Normal Flow rate : 2800 litres/hr
Make of EDI : M/s. Ion Pure EDI, USA
Material of Construction of different parts:
Dilute Spacer : Polysulfone
Concentrate Spacer : Polysulfone
End Block : Polypropylene
Resin compartment O-rings : FDA-grade silicon
Anion exchange resin 1 : Styrene / DVB, strong base, type I
Anion exchange resin 2 : Styrene / DVB, strong base, type II
Cation exchange resin : Styrene / DVB, strong acid
Anion exchange membrane : Heterogeneous PE/AER
Cation exchange membrane : Heterogeneous PE/CER
Anode : Platinized Titanium
Cathode : SS 316.
EQUIPMENT NAME: CIP Tank
EQUIPMENT LOCATION: Before CIP feed pump
FUNCTION: For Sanitization.
M.O.C. of Shell : SS 316 L /Nozzles :Tri-clover end
Surface Finish: Internally electro polished to <0.4 micron Ra.
Externally buffed to mirror finish.
INSTRUMENT NAME: Rotameter
LOCATION:
1) Inlet line of Multi Grade Filter (1000 – 10000 LPH)
2) Potable Water Line (500 – 5000 LPH)
3) RO First Pass reject line (200 – 2000 LPH)
4) RO Second Pass reject line (100 – 1000 LPH)
5) EDI Feed line (400 – 4000 LPH)
6) Concentrate line of EDI – I (30 – 300 LPH)
FUNCTION: To check the line flow rate.
TECHNICAL SPECIFICATION:
Make : George Fischer /End Connection : Tri Clover end
MOC of float : SS 316 /MOC of Measuring Tube : SS
MOC of end connection : Nylon 6 / Accuracy class : 2.5.
INSTRUMENT NAME: Flow Indicator Totalizer
LOCATION: Outlet of Softeners
FUNCTION: To check the total line flow rate.
TECHNICAL SPECIFICATION:
Type : Turbine Type
End Connection : Threaded.
INSTRUMENT NAME: Floaty Level Switches
LOCATION: Raw Water Tank
FUNCTION: To check the Level in the tank. If the level in the tank is below the desired level the system will give indication on the panel & will trip the system.
TECHNICAL SPECIFICATION:
Type : Floaty type /MOC : PVC.
INSTRUMENT NAME: Low Level Switches
LOCATION:
1) NaOCl-01 Dosing Tank
2) Raw Water Tank
3) SMBS dosing system
4) ADS dosing system
5) pH correction system
FUNCTION: To check the Level in the dosing tank. If the level in the tank is below the desired level the system will give hooter & after settable time will trip the system.
TECHNICAL SPECIFICATION:
Type : Magnetic /MOC : PP.
INSTRUMENT NAME: Flow Switches
LOCATION: Raw Water inlet line
FUNCTION: To check the line flow.
INSTRUMENT NAME: Oxidation Reduction Potential Analyzer
LOCATION: Inlet of RO pass – I
FUNCTION: ORP Analyzer is provided so as to check the absence/presence of chlorine in the feed water to the RO System. If free chlorine is sensed in the feed water it will give an indication on the panel & open the dumping valve and dump the high chlorinated water for 300 secs. & even if the ORP value is not below the set point it will trip the system.
TECHNICAL SPECIFICATION: MOC of Electrode : Glass.
INSTRUMENT NAME: Conductivity Indicator cum Controller
LOCATION: 1) Outlet of RO pass – I 2) Outlet of RO pass – II
FUNCTION: To check the conductivity in the water, if the conductivity in the feed water is sensed high above a settable value then it will give an indication on the panel & open the dumping valve and dump the high conductivity water.
SAMPLING VALVE:
EQUIPMENT LOCATION: RO-EDI Distribution Piping
FUNCTION: To take a Sample for RO Water Analysis.
TECHNICAL SPECIFICATION: Type : Millipore Design /M.O.C.: SS 316L.
DRAWINGS REQUIRED
- P&ID for Pretreatment & Purified Water Generation & Distribution System
- Skid Drawings
- Isometric for Pretreatment System
- Isometric for RO-EDI System
- Control Panel Drawing
- CIP Tank Drawing
PRE-QUALIFICATION CHECK LIST
- HYDRAULIC PRESSURE TEST
- DOCUMENTATION CHECK
- INTERLOCK CHECKS
- OPERATIONAL CHECKS
LIST OF DOCUMENTS REQUIRED FOR GENERATION SYSTEM
- Manufacturer’s Manuals – Preventive Maintenance (O.M.)
- MOC Certificate
- Leak Test Reports / Hydro Test Report
- Sanitization Reports
- Cleaning / Flushing Reports
- Manufacturer’s Catalogue
- Test Certificate
- Guarantee / Warranty Certificate
- Basis of Design
