ML17339B217

Sys Flow Diagram:Condensate Polishing Demineralizer Sys

ML17339B217
Person / Time
Site:	Turkey Point
Issue date:	05/02/1980
From:	BECHTEL GROUP, INC.
To:	FLORIDA POWER & LIGHT CO.
Shared Package
ML17339B216	List: L-80-231, Forwards Responses to Questions Re Proposed Installation of Condensate Polishing Demineralizers.Responses Suppl Info Previously Submitted in 800318 & 0527 Ltrs.Oversize Drawings Encl ML17339B217 ML17339B218
References
5177-088-M-2, 5177-88-M-2, NUDOCS 8007280551
Download: ML17339B217 (18)

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TABLE OF CO?PZENTS 1. 0 FUNCTION 2.0 DESIGN BASES 2.1 SAFETY DESIGN BASIS 2.2 POWER GENERATION DESIGN BASIS 2.3 CODES AND STANDARDS 3- 0 DESCRIPTION 3.1 GENERAL DESCRIPTION 3.2 SYSTEM OPERATION 3.3 COMPONENT DESCRIPTION 4.0 UNRESOLVED MATTERS

5.0 REFERENCES

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'ONDENSATE POLISHING DEMINERALIZER SYSTEM NUMBER 5177-088-M-1 SHEET 2

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'D0 CL 1.0 FUNCTION 2.0 DESIGN BASES 2.1 SAFETY DESIGN BASIS The condensate polishing demineralizer system is not safety related and has no. safety design basis.

The system is designed to Quality, Group D as defined in Reg.

Guide 1.26.

2.2 POWER GENERATION DESIGN BASIS A.

r The system is designed to filter and demineralize the condensate at.

a normal operating flow rate of 13,880 gpm and normal operating temperature of 108.7 F

with a maximum temperature of 140 F.

The condensate polishing demineralizer system is designed to treat the conden-sate at a normal operating flow rate of 13,880 gpm2with flow rate not exceeding 3-5 gpm/ft of ion exchange bed area.

1.1 The condensate polishing demineralizer system purifies the condensate by filtration and demineralization to provide high quality condensate water to Turkey Point Units 3 and 4 steam generators.

When in use, the system treats full condensate flow discharged from the condensate pumps.

The system is also operated during feedwater recirculation and secondary system wet layup operation.

1.2 In addition to the filter/demineralizers, the condensate polishing demineralizer system includes precoat and spent resin handling subsystems.

The precoat subsystem is used to evenly distribute, powdered resins across the resin retention elements within the filter/demineralizers.

The spent resin handling subsystem is used to transfer exhausted resins out of the filter/demineralizers and provides a means to discard the exhausted resins.

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Normal Operation Constituent

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Condenser Leak Operation Condenser Leakage Criteria 1)

Allowable l'eakage based on unit operation for one hour:

The condensate polishing demineralizer system is designed to allow 0.15 gpm maximum continuous condenser leakage without. exceeding 0.15 ppm chloride in the steam generators.

The condensate polishing demineralizer system is designed to maintain required effluent quality during normal operation, startup operation and.condenser leak conditions.

The performance require-ments under each operating condition are described below:

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Allowable leakage based on unit continuous operation:

The unit is designed to operate continuously under a maximum continuous con-denser tube leakage rate of 0.0l gpm without ex-ceeding 0.15 ppm chloride in the steam generators.

The condensate polishing demineralizer system is designed for the pressure

drop, from system inlet to system outlet, not to exceed 13 psi with resin in clean condition, and 26 psi with resin dirty.

DELETED In case of primary to secondary

leakage, the system may be isolated by the operator upon receipt of a high radiation alarm from steam, generator blowdown line.

The main bypass valve can be opened to allow normal operation of the plant.

The precoat subsystem is designed to deliver powdered resin in a slurry form to the surface of the precoat retention media in the filter/demineralizer vessel to provide a uniform distribution of the resin on the retention media.

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.The precoat subsystem is designed to use a

mixture of powdered cation and anion resins in a ratio ranging from 3 cation/1 anion to 1 cation/1 anion.

The subsystem is designed to precoat the filter/demineralizer vessels with powdered resins at a resin loading of 0.2 lb/ft (dry weight).

The subsystem. is designed to precoat one filter/deminerali.zer vessel to the maximum resin loading, of approxi-mately 300 lb. dry weight, in one cycle of operation.

The spent resin handling subsystem

.is designed to (1) process the backwashed resin slurry, discharged from the filter/demineralizer

vessel, (2) prepare the resin slurry in a concentrated form in a range of 30-50 percent (by wei.ght) for, disposal.

The condensate polishing demineralizer system is unitized, one for Unit 3 and one for Unit 4.

The system 'is designed to process full condensate flow of 13,880 gpm.

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The system is designed to assure that all vessels which are in service share the flow equally.

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The system is designed for normal power operation.

In case of loss of power, the bypass valve will open.

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The system component, piping, valves, etc., is constructed of carbon steel.

The vessel in contact with ion exchange resin is provided with lining.

2.3 Codes and Standards The condensate polishing demineralizer system is designed and constructed in accordance with the following codes and standards:

American Society for Testing and Materials (ASTM)

American National Standards Institute (ANSI)

ASME Boiler and Pressure Vessel Code Section II Section VIII Section IX Material Specifications Division 1 Pressure Vessels Welding Qualifications Hydraulic Institute (HI)

National Electrical Manufacturers Association (NEMA)

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Instrument Society of America (ISA)

Florida Industrial Commission Department of Industrial Safety South Florida Building Code

3.0 DESCRIPTION

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The filter/demineralizer subsystem consists of four condensate filter/demineralizer

vessels, each with an individual hold.,

pump, and an individual flow control valve.

The filter/demineralizer vessels contain the resin and/or filter media.

The hold pumps maintain the minimum condensate flow that is reguired for proper resin and/or filter media reten-tion.

The individual hold pump loop for each vessel can be isolated from the main condensate system.

The flow control valves 'for the subsystem maintain an even distribution of the condensate flow through all on line units.

All four filter/demin-eralizer units are piped in parallel.

The precoat subsystem is used to place resin or filter media charges into the filter/

demineralizer vessels.

This subsystem consists of precoat tank and precoat pump The precoat tank is provided with agitator to assure proper mixture of resin or filter med'ia slurries.

3.1 General Description The condensate polishing demineralizer system is a four vessel, powdered ion exchange resin system.

The system, as shown on PSIDs 5177-088-N-3 and 4, consists of the foll'owing subsystems:

Filter/demineralizer Precoat Spent Resin Handling

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Vl 0a4 The precoat tank holds the resin mixture for precoating the filter/demineralizer unit 3.2 System Operation A.

Filter/Demineralizer Operation The condensate polishing demineralizer system includes four filter/demineralizer vessels.

Three vessels in parallel are normally used at the design flow rate.

At lower flow rates either one, two, or three units may be used.

The flow control valves for the system automatically divide the flow among the units in service.

The master controllers for these valves may be switched to obtain either the lowest, total system differential pressure

possible, or a constant system differential pressure; at the operator's discretion.

During normal operation the condensate will he pumped from the condenser hotwell hy the condensate

pumps, through the filter/

demineralizer prior to entering the air ejector inter-and after-condensers and the main turbine gland seal condenser.

Condensate 1'caving the filter/demineral-izers will pass through five stages of feedwater heaters.

From there, the steam The spent resin handling subsystem consists of Mott PHP filter system and pressure dewatering filter system.

Each system can be operated individually for batch operation.

The pressure dewatering filter system is to retain larger powdex -particles;while.<he~tt PHP filter is to retain smaller particles that the pressure dewatering filter system is unable to retain.

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generator feed pumps deliver the water through the high-pressure feedwater heaters and then to the shell side 'of the steam generators.

During secondary system wet layup operation, the wet layup flow is passing through the condensate polishing system at a flow rate of 1000 gpm.

One or two filter/demineral-izers will be in service.

When any one of the filter/demineralizer vessels is exhausted, as determined by either total volume throughput high conductivity, high differential pressure, or high sodium content in the effluent, an alarm is given.

Upon the annunciation of this alarm, or after the maximum rec-ommended vessel run length has been

attained, the standby filter/demineralizer vessel is put in service by remote manual push button, and the exhausted filter/

demineralizer vessel is removed from service.

Supervisory control is provided by the automatic vessel mode controllers.

All vessel control and service mode selection will be from the condensate polishing demineralizer system control panel.

The system influent, effluent, and bypass valves are remotely operated from this control panel.

At the operator's discretion the exhausted vessel can be either placed in the "hold" mode for testing to confirm exhaustion, backwashed and left clean without a pre-coat, or backwashed, precoated, and placed in the "hold" position as a

standby.

Precoat Operation In the precoat subsystem, resin is man-ually loaded into the precoat tank where it is mixed with demineralized water from the backwash pump discharge.

From the precoat pump the resin slurry flows to a filter/demineralizer vessel.

The resin is retained on the resin retention media Pl n

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inside the unit by the flow through it, and the water from the slurry returns to the precoat pump suction combined with the incoming resin slurry from the precoat tank, returned to the filter/demineralizer unit.

The precoat operation is terminated by a timer set at a predetermined

time, which is determined during initial startup based on completion of the resin injection and indicated by clarity of the water in the precoat tank.

Spent Resin Handling Subsystem Operation d

The spent resin handling subsystem consists of Mott PHP filter system (PHPS) and Pressure Dewatering Filter System (PDFS) ~

The Subsystem arrangement is shown in P&ID 5177-088-M5.

After the resin slurry has been collected in the backwash receiver tank from the F/D vessel, the PDFS is actuated to transfer the slurry into the top of the filter media.

The clean liquid returns to the receiver tank while the filter cake (30-50% dry wt. resin) is collected in the Tote Box for disposal.

The PHP system will be initiated either prior to or immediately after the termination of the PDPS operation.

This system is to retain the smaller size resin particles the PDPS is unable to retain.

The PHP vessel houses the filter elements constructed of porous stainless steel (Porous size as small as 0.5 m).

The filter is capable of retaining all the 200-400 mesh resin (74-47 micron).

The resin retained on the element will be backwashed, discharged to the receiver 'tank and eventually collected in the PDFS in the subsequent filtration operation.

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SYSTEM DESCRIPTION CONDENSATE POLISHING DEMINERALIZER SYSTEM BN F488-M-1 SHEET OF ll DATE

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Component Description ()acr, UnH. g Quantity Type Active ion exchange area when precoated Maximum recommended flow rate Minimum flow rate for resin retention (Later) gpm/ft Shell material /Size CS/28". g.~.7.'.-10" St.

Lining material

. 2'lasite 715S Number of filter elements Element O.D./spacing between elements 2/1 inch/inch Length of element, 70 inch Vessel design pressure/temperature

'545/600 psig/F Vessel weight, empty/operating 16,000/33 000 lbs/lbs Code ASME VIII, Div. 1 Location Outdoor Manufacturer Graver 4Vertical, cylindrical 1500 ft 3.5 gpm/ft, Hold Pumps (3P86A, B,

C & D; 4P86A, 3, C & D)

Quantity Type Total capacity/TDH/NPSH, design shuto ff NPSH available at leg Spm Fluid Design pressure Design temperature BHP at design Material:Casing/Impeller Design

.Pump motor characteristics classification Total weight Location Manufacturer Horizontal, centri fugal gpm/ft/ft

'l65/60/(Later) 0/72/NA

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2' Cast Steel/SS Hydraulic Institute 46OV, 3g eOHZ

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Quant,ity Type Design pressure Design temperature.

Capacity Tank material/Size Lining material Weight, empty/operating Agitator motor HP Code Location Manufacturer Precoat Pumps (3p87, 4p87)

Quantity Type Total capacity/TDH/NPSH, design shutoff NPSH available Fluid Design pressure Design temperature BHP at design Material: Casing/Impeller Design standard'ump motor characteristics classification Total weight Zocation Manufacturer Air Surge Reservoir (3T68~ 4T68)

Quantity Type Design pressure Design temperature Capacity Tank material Weight, empty/operating

.. Code Location Manufacturer 1Vertical, cylindrical Atmospheric (Later)

F (Z,ater) gal CS/60" g x 5'-0" High Plasite 7155 (Later) lbs/(Later) lbs API-650 as design guide Indoor (Later) 1Horizontal, centrifugal gpm/ft/ft 1940/60/Later

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(Later)

(Later)

(Later)

(Later)

Si Diaphragm Pump 1 ~

2.

3.

5.

6.

7.

8 9.

10.

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'3.

Quantity Type Total capacity TDH NPSH Fluid Design pressure Design temperature MateriaL Pump driver Total weight Location Manufacturer 1

Horizontal, centrifugal (Later)

(Later)

(Later)

Resin slurry (Later)

(Later)

(Later)

Compressed Air

{Later)

Outdoor (Later) 4 0 UNRESOLVED MATTERS 4.1 Deleted 4.2 4,3 Spent Resin Handling subsystem.

4.4

& 4.5 Deleted Paxameters in Section 3 ~ 3 for the equipment/component will be available from Seller, TPO SYSTEM DESCRIPT ION CONDENSATE POLISHING DEMINERALIZER SYSTEM NUMBER 5177-088-M-1 SHEET OF 16 17 DATE

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CaEmaQ 0~ 'D0 CL R ill 5 0 REFERENCES

5. 1 Drawings A

Process and Instrument Diagrams 1.

P&ID 2

P&ID 3.

P&ID 4 ~

P&ID 5 ~

P&ID 6.

5177-088-M-3,. Condensate Polishing Demineralizer System 5177&88-M-5~ Condensate Polishing Demineralizer Spent Resin Handling System 5610-M-2~, Condensate and Peedwater System 5177-090-M-3, Demineralized Water Storage and Deaeration System 5177-086-M-3~

Secondary System Wet Lay-up System 5610-M-21, Heat Balance 100% of -Rated Plow B ~

System Flow Diagram 5177-088-M-2~ Condensate Polishing Demineralizer System 5'

Specification l.

5177-088-M-112, Condensate Polishing Demineralizer 2.

Deleted 5.4 PC/M 78-81B/82B Condensate Polishing Demineralizer System 5.3 Turkey Point Units 3 & 4 Plant Design and Mechanical Design

Criteria, 5177-M>>OOO Cb C

8 gpc~~'PO SYSTEM DESCRIPTION CONDENSATE POLISHING DEMINERALIZER SYSTEM NUMBER 5177-088-M-1 SHEET 17 OF DATE.

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PRIMARY PIPING SCCONCAR'E PIPING NOTES:

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THE CATA SHOWN ON 1<<le FLOW Dl*GIEAM ARE FOR DECIGH PURPOSES ONLY, AND WHILE O0EOVL AS GVIDFS IN OPERATION, DOES NOT IIEPRECKNT EXACT Olt GUARANTEED OPEAATING CONDITIONS.

THE NVNCEltt 50tH<<

EECE AEC HAXIMOH VALOCC OCVCRING OVRINC TEI5 MODE OF OPERATIOH.TXE GRAVER INCTRVCTION I'JHVAL SHOULD 55 CONSVLTED FOR A BETTER VHDCR3IAHD<<IO 00 SYSTEM OPERATION 3

DVCI'RECOAT TANK RECYCLE ONLY 0)3 Qe Qs 0)o Q)

QE 3

QC 5

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IN!Id FILTRATION/

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/20 TEMPERATURE

( F)

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~ 4 fl,e TEMPERATURE ('F) feet f 20 Ite fte fea.l 017 PREGCURE (PS)G)

FLOW (GPM) 312 20

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11 Ssl 1st 07 Sil 380 Sle He iti 392 PRESSURE (PeiG)

FLD)V <GPM) l940 PRECDAT)NG 00 108.7 TEMPERATURE ( F) feel PRESSURE (Pe)G)

FLOW (GPM) 20 328 TEMFERATURE (eF)

PRESSURE (Ps)G)

LDW (GPM)

EMPERATURE(sF)

REGSURE (PSIG I LGW

( GPM EMPERATURE ('F )

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DESIGN TEMpERATURE (eF )

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PC/M 78.8)B/82B FILE NUMBER:

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