View source for LD-88-099, Responds to NRC Request for Addl Info Re Chapters 5 & 9 of CESSAR-DC Re Steam Generator Secondary Water Chemistry, Reactor Coolant Water Chemistry,Fire Protection Sys,Letdown Purification Line & Hydrogen Ignition

{{Adams
| number = ML20154M519
| issue date = 09/20/1988
| title = Responds to NRC Request for Addl Info Re Chapters 5 & 9 of CESSAR-DC Re Steam Generator Secondary Water Chemistry, Reactor Coolant Water Chemistry,Fire Protection Sys,Letdown Purification Line & Hydrogen Ignition
| author name = Scherer A
| author affiliation = ABB COMBUSTION ENGINEERING NUCLEAR FUEL (FORMERLY
| addressee name = Vissing G
| addressee affiliation = NRC OFFICE OF NUCLEAR REACTOR REGULATION (NRR)
| docket = 05000470
| license number = 
| contact person = 
| case reference number = PROJECT-675A
| document report number = LD-88-099, LD-88-99, NUDOCS 8809290014
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, VENDOR/MANUFACTURER TO NRC
| page count = 23
}}

=Text=
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September 20, 1988 LD-88-099 Docket No. STN 50-470F (Project No. 675)
Mr. Guy S. Vissing, Project Manager Standardization and Non-Power Reactor Project Directorate Office of Nuclear Reactor Regulation Attn:     Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555

==Subject:==
Response to NRC Requcst for Additional Information on Chapters 5 and 9, CESSAR-DC

==References:==
(A) Letter, G. S. Vissing (NRC) to A. E. Scherer (C-E), dated June 28, 1988 (B) Letter, LD-88-026      A. E. Scherer (C-E) to F. J. Miraglia (NRC), dated April 11, 1988.

==Dear Mr. Vissing:==

Reference (A) requested that Combustion Engineering provide additional information on CESSAR-DC, Chapters 5 and 9. Enclosure (1) to this letter provides our responses , and Enclosure (2) provides the corresponding proposed revisions to our submittal of Reference (B).
If you have any questions, please feel free to contact me or Mr.                                                                                             S. E.
Ritterbusch of my staff at (203) 285-5206.
Very truly yours, COMBUSTION ENGINEERING, INC.
                                                                                                                                                               'f&
0009290014 000920 0                                     A . I'   JeheNr PDR    ADOCK 050                                        DWW Nuclear Licensing AES:dmb

==Enclosures:==
As Stated                                                                                                                              h ec:     Mr. Frank Ross (DOE - Germantown)                                                                                                                      g
: l Power Systems                           1000 ProspNt H.S Road                                                                                    C03) 688-1911 Comtoston Eryneenng. Inc                Post O"ce 00= 500                                                                                         Tedes 99297 Windsor, Connectcut 06095-0500

Enclosure (1) to LD-88-099
                                                   .                                    Page 1 of 13 4
RESPONSE TO NRC REQUEST FOR ADDITIONAL !!! FORMATION CONCERNING Cl!APTERS 5 AND 9, CHEMICAL ENGINEERING BRANCH 4
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1 Enclosure (1)          r 1
to LD-88-099           l Page 2 of 13           l l
Question 281-14 (Pages 5.1-14, Item K.2)
   ,                             Steam genemtor se:ondary water chemistry specifications is referenced as  .
i                             being in Section 10.3.4. However, in Amendesnt 12 to Chapter 20 (sic)     t this subject is included in Section 10.3.5. Which section is intentied to i discuss steam generator secondary water chemistry?                        ;
Response 281-14                                                           l
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Section 10.3.5 is inter ded to discuss steam generator secondary water chemistry. Section 5.1.4.K.2 will be revised to reference Section 10.3.5.
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Enclosure 1) to LD-CS-O i')
Page 3 of le Question 231-15 (Page 5.1-16)
Fluid chemistry should be more specific, such as, reactor coo' tant water chemistry.
Respons 281-15 Combustion Engineering agrees.                           Section 5.1.4.L.4 wii.1 he revised to state                                             {
              "the material is compatible with the reactcy coo'.aat we.ter enemistry described in Section 9.3.4."
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i Enclosure (1) to LD-88-099 Page 4 of 13 Question 281-16 (Page 5.1-18, Item 7)
MISV is a typo and should be MSIV.
Response 281-16 Combustion Engineering agrees. Section 5.1. 4. M . 7 will be revised to correct this typographical error.

             .                                                                                                         Enclosure (1) to LD-88-099 Page 5 of 13 Question 281-17 (Page 5.1-22, Item P.3)
Amendment B states that the fire protection system should be consistent                                                                                                       ,
with the requirements of GDC. The fire protection section should be more
               .          specific and should reference GDC 3 and 5.
Response 281-17 Combustion Engineering will revise CESSAR-DC Section 5.1.4.P.3 to state that a fire protection system shall be provided consistent with the requirements of GDC 3 and 5.
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Enclosure (1) to LD-88-099 Page 6 of 13 Question 281-18 (Page 5.2-13, Section 5.2.3.2.3)
Reachable halogens is a typo and should be leachable halogens.
Response 281-18 Combustion Engineering agrees. Section 5.2.3.2.3 will be revised to correct this typographical error, P
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Enclosure (1) to LD-88-099 Page 7 of 13 Question 281-19 (Page 5.2-19, Section 5.2.3.4.1.2.1)
The units of conductivity is incorrect and should be mhos/cm or S/cm.
Response 281-19 Combustion Engineering agrees.                                Section 5.2.3.4.1.2.1 will be revised to indicate that the units of conductivity are mhos/cm.
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Enclo:ure (1) to LD-88-099 Page 8 of 13 Question 281-20 (Table 5.4.10-1)
Spray flow, minimum, 375 gal / min and spray flow, continuous,1.5 gal / min seems inconsistent. Shouldn't continuous spray flow be greater than the minimum?
Response 281-20 The numerical values are correct as provided, however, the terminology of CESSAR-DC Table 5.4.10-1 will be clarified as described below.
The pressurizer spray system consists of piping runs from the discharge side of RCPs 1A and IB to the pressurizer sprey nozzle (CESSAR-DC, Figure 5.1.2-1). A control valve in each line regulates the amount of spray by varying the valve position as a function of pressurizer pressure.
The system is designed to provide the spray flow necessary to maintain the pressurizer pressure below the reactor trip setpoint following an insurge of water during maneuvering, load follcw, and loss of load transients, such that the pressurizer safety valves are not actuated by overpressure transients. The minimum design capacity for this spray flow for the System 80+ " design is 375 gallon per minute (gpm).
In order to avoid stratification of the pressurizer boron concentration and to maintain the temperature in the surge and spray lines (thereby reducing thermal shock as the spray contrcl valves open), a small continuous spray flow of approximately 1.5 gpm is maintained to the pressurizer through hand-operated globe valves located in bypass lines l                                                         around the spray control valves.         These spray bypass valves are set during hot functional testing and remain open during plant operation. The
!                                                         spray control valves, on the other hand, are normally closed and are opened automatically to maintain pressurizer pressure.
i                                                         As discussed above, continuous spray flow through the bypass valves is l
not greater than the minimum design capacity of the spray control valves.
l                                                         Table 5.4.10-1 will be revised to indicate that 375 gpm is the minimum de' sign capacity, and not the minimum flow, for the pressurizer spray system.
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Enclosure (1) to LD-88-099 Page 9 of 13 Question 281-21 (Page 9.3-36, Section 9.3.4.3.4)
The maximum amount of oxygen from air dissolved in water at 25' is approximately 8 ppm.      This only applies at atmospheric pressure.      Please clarify the statement.
r Response 281-21 The corresponding paragraph of CESSAR-DC states:
These data reveal that no chloride stress corrosion occurs at oxygen concentrations below approximately 0.8 ppm.        This oxygen limit was reduced by a factor of 8 to give the conservative concentration of 0.10 ppm oxygen. The maximum amount of oxygen from air dissolved in water at 25*C is approximately 8 ppm.        At this concentration, a chloride concentratloa of less than approximately 1.50 ppm would preclude the possibility of chloride stress cormston.      This limit was reduced by a factor of 10 to provide a comervative chloride limit of 0.15 ppm.
The above discussion provides a brief expla:1ation of how the reactor coolant oxygen and       chloride limits were established by Combustion Engineering. That explanation remains unchanged from CESSAR-F, and the Chemical and Volume Control System described in Section 9.3.4 of CESSAR-F was approved by the NRC, as documented in the Safety Evaluadon Report       (NUREG-0852).       Notwithstanding that approval, however,      the following information       is  provided as supplemental clarification.
First, the reactor coolant oxygen limit was established based upon data indicating the relationship between oxygen concentration and the susceptibility of austenitic stainless steel to stress corrosion cracking.
These data revealed that no stress corrosion occurs at oxygen concentrations below approximately 0.8 ppm. For conservatism this value          ,
was reduced to 0.1 ppm.        Thh oxygen limit is applicable for all plant operating modes with the reactor vessel head in place.
j           During plant operations when the reactor vessel head is removed , the reactor    coolant is air sa turated.       At 25 C this corresponds to j         , approximately 8 ppm of oxygen. For conservatism in establishing the reactor coolant chloride limit, it was assumed that this 8 ppm of oxygen
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Enclosure (1) to LD-88-099 Page 10 of 13 would remain in solution during subsequent plant operations with the reactor vessel head installed, even though the plant chemistry limits require the oxygen concentration to be less than 0.1 ppm for such       ,
operation. At 8 ppm of oxygen, a chloride concentration of less than approximately 1.5 ppm will preclude the possibility of stress corrosion cracking. This limit was reduced by a factor of 10 to provide a conservative chloride limit of 0.15 ppm.
No change to CESSAR-DC is planned.
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Enclosure (1) os LD-88-099 Page 11 of 13 Question 281-22 (Table 9.3.4-1, Sheet 1 of 2) pH analysis temperature indicates 77'. The temperature unit should be incluried (i.e. 77'F).
          'sesponse 281-22 Combustion Engineering agrees. Table 9.3.4-1 will be revised to indicate the specified pH ranges are for reactor coolant at 77 F.
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  .                                                     Enclosure (1) to LD-88-099 Page 12 of 13 Question 281-23 (Pg. 9.3-19)
The Advanced Light Water Reactor Requirements Document indicated that the design of the le'.down purification line from the reactor coolant system should be such that 30 seconds to one minute is allowed for fluid to flow from the le:down connection to the containment penetration to reduce radiation exposures. Confirm that this consideration is factored in the design of the CVCS system.
Response 281-23 The System 80+T.M Chemical and Volume Control System (CVCS) design will include a provision that the design of the letdown purification line from the reactor coolant system will be such that at least thirty (30) seconds will be allowed for fluid to flow from the letdown connection to the containment penetration. This provision is consistent with the intent of the EPRI design requirement provided in the Advanced Light Water Reactor (ALWR) Requirements Document Paragraph No. 6.3.2.6 (Rev. 0).               As documented in the Draft Safety Evaluation Report (DSER), dated May, 1988 Combustion Engineering understands this does not conflict with any NRC requirements.      Neither the ALWR Requirements Document nor the DSER indicate that this provision is a regulatory requirement.

  .                                                   Enclocure (1) to LD-88-099 Page 13 of 13 Question 281-24 (Pg. 9.3-19, Section 9.3.4.1.2)
The Advanced Light Water Requirements Document addresses hydrogen utilization precautions in the CVCS system design and arrangement to minimize the potential for and the effects of hydrogen ignition. Indicate design features to prevent explosive hazards associated with use of hydrogen in the volume control tank.
Response 281-24 Several design features have been incorporated into the design of the volume control tank (VCT) to prevent explosive hazards associated with the use of hydrogen. In addition to proper ventilation, all vent lines and relief valves on the VCT gas space are designed to be hard piped directly to the gaseous waste management system (CESSAR-DC Figure 9.3-1). The gaseous waste management system is specifically designed tc sr.fely dispose of all hydrogen discharged to it. All drain and relief valves on the VCT are also designed to be hard piped to specific collection tanks which are designed to safely dispose of hydrogen. Finally, all isolation valves within the VCT cubicle are packless type valves designed to prevent the escape of gases.
The above design features are consistent with the intent of the EPRI design    requirement provided in    the Advanced Light Water        Reactor Requirements ( ALWR) Document, Paragraph Nos. 6.4.3.1.1 and 6.4.3.1.4 (Rev. 0). As documented in the Draft Safety Evaluation Report (DSER) dated May, 1988, Combustion Engineering understands that these design features do not conflict with any NRC requirements.       Neither the ALWR Requirements Document nor the DSER indicate that these provisions are regulatory requirements.

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Enclosure (2) if ,,             .                                                to LD-88-099 Page 1 of 9 4
5 PROPOSED REVISIONS TO THE COMBUSTION ENGINEERING STANDARD SAFETY ANALYSIS REPORT O

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     .-                  "'~"                                                 to LD-88-099 C ES S A R 'CERTIFICATICN Paso 2 of 9 h k 7D\'N
: 9. If the isolation valves upstream of the ADVs are electrically controlled and operated, the valve operator and control systems shall be designed to the same IEEE standards as applied to the ADVs.
J.           Insoection and Testina IB
: 1. All ASME B&PV Code, Section III,             Class 1 and 2 valves shall be designed, fabricated and installed such that they are capable of being periodically tested in accordance with ASME Code, Section XI.
: 2. Adequate     clearances        shall    be    provided    for inservice    inspection       of   the    Reactor   Coolant Pressure Boundary and the ASME B&PV Code Section III, Class 2 portions of the Main Steam, Main Feed. Emergency Feed,          and   Blowdown    systems' piping,    in accordance with the provisions               of Section XI of the ASME Boiler and Pressure Vessel Code.
: 3. Biological shielding and all other insulation, if installed around the Reactor Coolant Pressure Boundary, shall be designed to afford access for inservice inspection as defined by Section XI of                    '
che ASME Boiler and Pressure Vessel Code.
: 4. The pressurizer manway shall be accessible for internal examination of the pressurizer.
K.         Chemistrv/Samolina
: 1. A    sampling   system       which   provide    a  means    of obtaining remote liquid samples from the RCS for
(                        chemical and radiochemical laboratory analysis shall be provided.          The sampling system shall be designed     to   allow       for   the   following    tests:
corrosion product activity levels, dissolved gas, fisvion product activity, chloride concentration, coalant pH, conductivity levels and boron concen-tration. The pressurizer steam space sample lines shall contain 7/32" x 1"          o.-ifice as close to the
)                        pressurizer as possible.           The sample system shall l                        be as shown on Figure 5.1.2-1.
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: 2. A system or systems shall be provided to maintain the steam gener_a t or_ secondary water chemistry within Section -hh-3-t- specifications during plant 10.3 . 5 l
                                                                                                )
l Amendment B 5.1-14                      March 31, 1988 i                                                                  'l    I                        '

Enclosura (2)
   .- .CESSAR EMen,.                                               En88f/
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: f. copper acid etchants,
: g. penetrants.
If the above materials are intended to be used, the use shall first be approved by C-E.
: 4. The sample lines in contact with the reactor coolant, including welds shall be designect sur-h _ _
that the material is compatible with th             fidif' ~ N che.nistry described in Section 9.3.4.
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: 5. Construction     materials or     protective coatings containing       low     melting     point      elements, particularly lead, mercury and sulfur, shall not be used if they could come in contact with the secondary systems.      This is required to' reduce to a   minimum the potential for stress corrosion cracking     of   Inconel   material    in    the-  steam generators.
: 6. The secondary system piping shall be designed to allow cleaning for the removal of foreign material and rust prior to operation and to prevent introduction of this material into the steam generator. Chemical cleaning or hand cleaning may be employed.      During chemical cleaning, no fluid shall enter the steam generators. Suitable bypass piping shall be provided if required.
: 7. Non-metallic      insulation   used on the Reactor Coolant      pressure    Boundary shall      conform to Regulatory Guide 1.36.       The chloride and fluoride content of the non-metallic insulation shall be in the acceptable region as shown in Regulatory Guide 1.36.      Tests   shall be made on representative samples of      the non-metallic thermal insulation shall be demineralized or distilled water.
: 8. No contaminants, except for cutting oils, shall be left on any RCS component surface except for the time     required    to   perform   and   evaluate     the particular fabrication or inspection operation.
: 9. Field welding of the RCS piping assemblies and components shall be done         in accordance with a welding     procedure     or  procedures     by welders qualified to ASME Section IX requirements.
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5.1-16 sa   n                       _t

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: 6. The RCS and main steam piping, MSIVs, primary and secondary safety valves and their discharge piping and ADVs shall be arranged and supported such that the limitin( loads are not exce_eded for normal and relieving conditions.               gg
: 7. Following a secondary li          reak either all steam paths downst:;eam of th TC"';           hall be shown to be isolated by their resp            ve control systems following a PSIS actuation signal, or the results of a blowdown through a non-isolated path shall be shown to be acceptable.         An acceptable maximum steam ficw from a non-isolated steam pagh is 10%
of the main steam rate (MSR) (1.9 x 10 lb/hr 9 1000 psia saturated steam).          It is not required that the control systems for downstream valves nor the downstream valves themselves be designed to IEEE 2;9 and IEEE 308 or ASME Code, Section III and Seismic ^ategory I criteria respectively.
: 8. The MSIVs for each steam generator               shall be arranged such that a maximum of 2000 cubic feet (total for two steam lines per steam generator) is contained       in   the  piping    between each steam
                  'Jenerator and its associated MSIVs.           This volume shall include all lines off of tle main steam line up to their isolation valves.
: 9. The main steam lines shall be arranged such that a maximum of 14,000 cubic feet is contained between the MSIVs an<2 the turbine stop valves.                This volume shall include all lines off of the main steam line up to their isolation valves.
: 10. The main steam lines shall be headered together prior to the turbine stop valves but not upstream of the !GIVs , and a crossconnect line shall be provided    which will maintain steam generator
'                 pressure differences within the following limits for all normal and upset conditions.
: a. 0-15% power operation pressure difference to be 1 psi.
: b. 15-100% power operation pressure difference to be 3 psi.
: 11. No automatically actuated valves shall be located upstream of the MSIVs except as required for i
supply to steam driven emergency foodwater pumps.            j Proviswns shall be made to prevent blowdown of 5.1-18
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: 8. The design pressure, temperature, and flow ratints of the main steam piping and valves shall be greater than or at           least equal to the design pressure, temperature, and flow rating of ths                           )
steam generator secondary side.
P. Related Service
: 1. The pressure and thermal transients described in Subsectich J.3.lc1 shall be utilized in the design of those portions of the RCS not within the CESSAR design scope.
: 2. The    systems    or      portions       of reactor            coolant pressure boundary outside of the CESSAR design scope shall be Safety class I unless the conditions of 10CFR50.55A are met.
: 3. A fire protection system shall be provided to protect the RCS consistent with the requirements of GD      and,   shall include as a minimum,                      the follo' ng features:
g              a. Facilities for fire detection and alarming.
: b. Facilities       for    methods to minimize                  the probability of           fire     and   its          associated effects.
: c. Facilities for fire extinguishment.
: d. Methods of ' fire prevention such as use of fire resistant and non-combustible materials whenever practical, and minimizing exposure of combustible materials to fire hazards.
: e. Assurance that fire protection systems do not i                             adversely        affect         the   functional             and structural         integrity       of  safety           related structures, systems, and components.
: f. Fire protection systems shall be designed to assure    that their rupture or inadvertent operation does not significantly impair the capability of          safety related               structures, systems, and compenants.
: 4. Systems shall be provided for the detecticn of reactor coolant leakage from unidentified sources.
5.1-22

l Enclosure (2)       !
CESSAR !aMem:u                                                to to-33 0S9 Page 6 of 9 Q M M -\B 5.2.3.2        Compatibility with Reactor Coolant 5.2.3.2.1        Reactor Coolant Chemistry Controlled water chemistry is maintained within the RCS. Control of the reactor coolant chemistry .i s the function of the CVCS which is described in Section 9.3.4.          Water chemistry limits applicable to the RCS are given in Section 9.3.4.
5.2.3.2.2        Materials of Construction Compatibility with Reactor Coolant The materials of construction used in the RCPB which are in contact with reactor coolant are designated by an "a" in Table 5.2-2. These materials have been selected to minimize corrosion and have    previously demonstrated satisfactory performance           in other existing operating reactor plants.
Metallic materials in contact with reactor coolant shall be restricted in cobalt content to as low a level as practical for               B all stainless steel or nickel base alloy components with a large wetted surface area. Cobalt base alloys shall be avoided except in cases where no proven alternative exists.
5.2.3.2.3         Compatibility with External Insulation and Environmental Atmosphere The possibility of leakage of reactor coolant onto the reactor vessel head causing corrosion of the' pressure boundary has been investigated by C-E.
Tests have shown that reactor coolant system leakage onto surfaces of the reactor coolant pressure boundary will not affect the integrity of the pressure boundary.
lB The insulation supplied by C-E is of the stainless steel reflective type, which ainimizes insulation contamination in the event of a chemical solution spillage.         In local areas around stainless steel and the nickel based alloy nozzles in the reactor vessel head, small sections of non-metallic insulation are used.
However, the quantity of J :ch;bic-halogens will be limited in accordance with Regulatory Guide 1.36.
                                            \e.va\e.
Amendment B 5.2-13                  March 31, 1988
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CESSAR!Encma                                                  Ts*!L'oW Page 7 of 9 Q A m -\9 overlay on the end of the nozzle.       Following final stress relief of the component, the stainless steel safe end is welded to the Inconel overlay, using Inconel weld filler metal.
5.2.3.4.1.2        Avoidance of Contamination Causina Stress Corrosion Crackina 5.2.3.4.1.2.1        N888 Components. Specific requirements for cleanliness and contamination protection are included in the equipment     specifications    for    components    fabricated    with austenitic    stainless  steel. The provisions described below indicate the type of procedures utilized for NSSS components to provide contamination control during fabrication, shipment, and storage as required by Regulatory Guide 1.37.
Contamination of austenitic stainless steels of the 300 type by compounds which can alter the physical or metallurgical structure and/or properties of the material is avoided during all stages of fabrication. Painting of     300   series   stainless steels       is prohibited.      Grinding    is     accomplished    with    resin     or rubber-bounded aluminum oxide or silicon carbide wheels which were not previously used on materials other than austenitic alloys. Outside storage of partially-fabricated components is avoided and in most cases prohibited.         Exceptions are made for certain components provided they are dry, completely covered with a waterproof material, and kept above ground.
Internal surfaces of completed components are cleaned to produce an item which is clean to the extent that grit, scale, corrosion products, grease oil, wax, gum, adhered or embedded dust or extraneous materials are not visible to the unaided eye.
Cleaning is effected by either solvents (acetone or isopropyl alcohol) or inhibited water (hydrazine).        Water will conform to the following requirements:
Halides Chloride (ppm)             0.60 Fluoride (ppm)             0.40 Conductivity (l=h cfcm)          5.0 pmkos pH                               6.0-8.0 Visual clarity                   No turbidity, oil, or sediment To prevent halide-induced intergranular corrosion which could occur in aqueous environment with significant quantities of 5.2-19 n  n

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Enclosuro (2)
            .CESSAR Hiecun.
* m-88499 Page 8 or 9 k k 7D\ "LO Ij n E 5.4.10-1 PRESSURIZER PARAMETERS Property                                 Parameter Design pressure, psia                                   2500 Design temperature, 'F                                  700 Normal operating pressure, psia                         2250 Normal operating temperature, 'F                        652.7 Internal free volume, ft 3                              2400 Normal (full power) operating water volume, ft 3         1200                        B Normal (full power) steam volume, ft 3                   1200 Installed heater capacity, KW                           1800 Heater type              y          }-                  Immersion Spray flow, minim        al/ min                          375 Spray flow, continuous, gal / min                       1.5 Nozzles Surge, in. (nominal)                              12, schedule 160 Spray, in. (nominal)                              4. schedule 160 Safety valves, in. (nominal)                      (LATER)                     B Instrument level, in. (nominal)                              3/4, schedule 160 Temperature, in. (nominal)                        1, schedule 160 Pressure, in. (nominal)                           3/4, schedule 160 Heater, 0.0. , in.                                      1-1/4 Amendment B March 31, 1988
                                                                      ' fl   D

Enclosure (2)
CESSAR !!nincua                                                     EfiN P Q A 28-u TABLE 9.3.4-1 (Sheet 1 of 2) 9fEEATING LIN1JJ 1.0 REACTOR COOLANT MAKEUP WATER Analysis                                                       Normal Chloride (Cl)                                                   < 0.15 ppm pH                                                              6.0 - 8.0         B Fluoride (F)                                                    < 0.1 ppm Suspended Solids                                                          < 0.35 ppm        B 2.0 PRIMARY WATER Pre Core Hot           Initial Core Load Power Analysis           Functionals (1)        and Criticality   Operation pH (77'J            3.8 - 10.4             4.5 - 10.2        4.5 - 10.2           8 c-r Conduc ivity        (2)                    (2)                (2)
Hydrazine          30-50 ppm (3)         30-50 ppm (3)      1.5 x 0xygen ppm (4)
(max. 20 ppm)
Ammonia            <50 ppm               <50 ppm            0-2 ppm Dissolved Gas                                               (5)
Lithium            1-2 ppm               0.2 2.3 ppm        0.2-2.3 ppm Hydrogen                                  (6)               25-50 cc (STP)/kg (Hp 0) (7)
Oxygen             50.1 ppm              30.1 ppm (9)       10.1 ppm Suspended Solids   <0.35 ppm,(8)         <0.35 ppm,(g)      <0.35 ppm,(8) 2 ppm max.            2 ppm max.         2 ppm max.
Chloride          50.15 ppm              10.15 ppm          10.15 ppm l
(          Fluoride           10.1 ppm              10.1 ppm           10.1 ppm i
Boron                                    s Refueling        s Refueling
:                                                   Concentration       Concentration Amendment 8 March 31, 1988}}