ML14072A080

CHLE-006, STP Material Calculations, Revision 2

ML14072A080
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Site:	South Texas
Issue date:	02/24/2014
From:	Leavitt J South Texas
To:	Office of Nuclear Reactor Regulation
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NOC-AE-14003075 CHLE-006, Rev 2
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NOC-AE-1 4003075 Attachment 2 CHLE-006: STP Material Calculations, Revision 2 PROJECT DOCUMENTATION COVER PAGE Document No: CHLE-006 Revision:

2 Page 1 of 14 Title: STP Material Calculations Project: Corrosion/Head Loss Experiment (CHLE) Program Date: 2/22/2014 Client: South Texas Project Nuclear Operating Company Summary/Purpose of Analysis or Calculation:

A survey of materials within containment at South Texas Project Nuclear Operating Company (STP) was performed to identify material that may leach corrosion or dissolution constituents into the pool solution as a result of a Loss of Coolant Accident (LOCA). This survey was performed to identify materials to include in the Chemical Head loss Experiment (CHLE) analyses and to determine the ratio of material surface area to solution volume [1] for testing purposes.This preliminary analysis of STP containment materials in this document is based on information that was available at the time this document was prepared.

Where final information was not available, values for material quantities used in CHLE tests will be identified in the individual test plan documents.

Role: Name: Signature:

Date: Prepared:

Janet Leavitt/Kyle Hammond < signed electronically

> 3/12/2012 Reviewed:

Kerry Howe < signed electronically

> 8/15/2012 Oversight:

Zahra Mohaghegh

< signed electronically

> 2/11/2013 Approved:

Ernie Kee < signed electronically

> 2/22/2014 Revision Date Description 0 3/12/2012 Original document 1 8/14/2012 Revised to resolve internal comments 2 2/22/2014 Reviewed for NRC submittal___ ___ I _________________

Document No: CHLE-006, Rev2 Pagel1 of 14 Title: STP Material Calculations Table of Contents List o f Fig u re s .....................................................................................................................................

3 List o f T a b le s ......................................................................................................................................

3 Definitions and Acronyms ...................................................................................................................

4 1 P u rp o se .........................................................................................................................................

5 2 M e th o d o lo gy .................................................................................................................................

5 3 Design Input and Analyses ..................................................................................................

5 3 .1 A lum in u m .......................................................

......................................................................

6 3 .1 .1 ST P S u rve y ....................................................................................................................

6 3.1.2 CHLETest Parameter

................................................................................................

7 3.2 Fiberglass insulation

.......................................................................................................

7 3 .2 .1 ST P S u rvey ....................................................................................................................

7 3.2.2 CHLE Test Parameter

................................................................................................

7 3 .3 C o n cre te .................................................................................................................................

8 3.3.1 ST P S u rvey .........

..........................................................................................................

8 3.3.2 CHLE Test Parameter

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8 3 .4 Late n t d e b ris ..........................................................................................................................

8 3 .4 .1 ST P S u rvey ...................................................................................................................

8 3.4.2 CHLE Test Parameter

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9 3.5 Zinc (Galvanized Steel and Coating) .....................................................................................

9 3 .5 .1 ST P S u rvey ...................................................................................................................

9 3.5.2 CHLE Test Parameter

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9 3 .6 C o p p e r ...................................................................................................................................

9 3 .6 .1 ST P S u rvey ...................................................................................................................

9 3.6.2 CHLE Test Parameter

................................................................................................

9 3 .7 Le a d .....................................................................................................................................

10 3.7.1 ST P S u rvey .................................................................................................................

1 0 3.7.2 CHLE Test Parameter

.............................................................................................

12 3.8 Uncoated Carbon Steel .........................................................................................................

12 3.8.1 ST P S u rve y ..................................................................................................................

12 3.8.2 CHLE Test Parameter

.............................................................................................

12 4 S u m m a ry .....................................................................................................................................

13 5 R e fe re n ce s ..................................................................................................................................

14 Document No: CHLE-006, Rev2 Page2 of 14 Title: STP Material Calculations List of Figures Figure 1: Simplified CAD image showing locations of lead insulated pipes are indicated in yellow ..........

10 List of Tables Table 1: Volume of materials in STP as a function of break type ........................................................

7 Table 2: Ratio of fiberglass material volume to pool volume to be used in the CHLE analyses .............

7 Table 3: Caldum concentration required to form precipitation

........................................................

8 Table 4: Volume and mass of lead insulation within STP containment

..............................................

11 Table 5: Lead precipitate and associated thermodynamic data associated with solubility

.................

11 Table 6: Lead concentration to form lead phosphate precipitate using STP representative chemistry

.... 12 Table 7: Surface area of materials in the CHLE analyses .................................................................

13 Table 8: Volume of materials in STP containment for breaks of various sizes ...................................

13 Document No: CHLE-006, Rev2 Page 3 of 14 Title: STP Material Calculations Definitions and Acronyms RCB Reactor Containment Building RCS Reactant CoolingSystem RWST Refueling Water Storage Tank SI Safety Injection ECCS Emergency Core Cooling System LOCA Loss of Coolant Accident STP South Texas Project CHLE Chemical Head Loss Experiments ICE Integrated Chemical Effects Document No: CHLE-006, Rev2 Page 4 of 14 Title: STP Material Calculations 1 Purpose A survey of materials within containment at South Texas Project Nuclear Operating Company (STP) was performed to identify materials that may leach corrosion or dissolution constituents into the containment pool solution as a result of a Loss of Coolant Accident (LOCA). This surveywas performed to identify mate rials to include in the Chemical Head loss Experiment (CHLE) analyses and to determine the ratio of material surface area to solution volume [1] fortesting purposes.

These values are important in conducting a risk informed approach in evaluation of potential safety issues aftera LOCA.The initial pool chemistry and the corrosion ordissolution constituents within the pool solution may react to form chemical precipitates that may negatively impact head loss across the sump strainer, resulting in failure of the Emergency Core Cooling System (ECCS). An accurate assessment of materials that will leach corrosion ordissolution constituents intothe pool solution and the ratio of material surface area to volume within containment will allowthe CHLE analysesto investigatethe most probable pool chemistry of a LOCA; thus determining the most realistic consequence of chemical reactions on head loss across the sump straineras a result of LOCA conditions.

This preliminary analysis of STP containment materials in this document is based on information that was available atthe time this document was prepared.

Where final information was not available, valuesfor material quantities used in CHLE tests will be identified in the individualtest plan documents.

2 Methodology A survey of materials in containment was conducted atSTP. Surface areas or volumes of materials within containment were determined and reviewed for possible exposure tothe containment pool solution.

Materials with very low surface area or probability of exposure to the pool solution were eliminated from the list of materials to be included inthe CHLE analyses.

For materialsto be included in the CHLE analyses, ratio of surface areas or volumes of materialstothe pool volume [1] were determined using the following equation.Vchle Mchle '- Vstp Mstp Where Mche is the material surface area or volume to be included inthe CHLE analyses, Vchleisthe volume of the solution in the tankforthe CHLE analyses, V,tp isthe steady-state volumeof the pool within the STP containment, and Mtp isthe material surface area or volume in containment.

3 Design Input and Analyses The following data was obtained from a survey of material identified to be present in containment at STP. Materials within containment that can leach metals into the containment pool are divided between non-submerged and submerged surfaces.

Non-submerged material surfaces are those exposed tothe containment spray during a LOCA. Although some condensation may remain on equipment and material abovethe containment flood level, the amount of corrosion products contributed from this material is relatively small compared tothe corrosion product generated by Document No: CHLE-006, Rev2 Page 5 of 14 Title: STP Material Calculations submerged materials.

With the exception of fiberglass insulation, the division of submerged and non-submerged materials is not affected by break type. Materials found to exist within containment at STP are as listed below:* Aluminum -from valve actuator components and scaffolding

• Fiberglass (Nukon and Microtherm) -used as insulation on pipes" Concrete -represented exposed concrete surfaces* Zinc -in galvanized steel and in zinc-based protective coatings* Lead -permanent lead shielding blankets* Copper- wiring, cables, and tubes ofthe fan coolers* Latent debris- dirt and lintfor air flowing into containment vents* Carbon steel -component of structural steel, steam generators, piping, etc.Aluminum and zinc, primarily in the form of galvanized steel or non-top coated inorganic zinc based primer, have been identified as the materials most susceptibleto corrosion following a LOCA [2-4]. Lead[5] and carbon steel [4] may also corrode within the expected pH range of about 4.5 -7.5 [6] following a LOCA, releasing metal ions intothe pool solution.

Fiberglass and concrete can leach constituents such as calcium and silicon into solution [4], which may produce chemical precipitates in the tri-sodium phosphate (TSP) buffered pool solution.

Copperand iron (from steel) are relevant because they may affect the corrosion rates of other materials, such as aluminum [7]. Since all the above materials exist within STP containment and are expected to be present within the pool chemistry if exposed tothe pool solution, all were evaluated to determine available surface area and probable exposure tothe pool solution.The pool volume at STP varies depending on the volume of waterin the reactor cooling system (RCS), refueling water storage tanks (RWST), and safety injection accumulators.

The RCS and RWST contribute to the pool volume in all LOCAs. The accumulators do not discharge in small break LOCAs (SBLOCAs), and therefore SBLOCAs technically.have a smaller pool volume and therefore larger ratio of material to pool volume than othersizes of LOCAs. However, the accumulators only contribute about 4 percent of the pool volume sothe effect is relatively minor. The pool volume for LBLOCA and MBLOCA were calculated to be 71,778 ft' at 21 °C [1]. The pool volume fora SBLOCA was calculated to be 61,949 ft 3 at 21 0 C I'].3.1 Aluminum 3.1.1 STP Survey Sources of aluminum in containment include structures such as scaffolding and small components such as valves and aluminum coatings.

Most of these materials are above the containment pool elevation, but may be exposed to containment sprays. Both integrated and separate effects tests have shown that the corrosion of aluminum can be significant and may cause precipitates

[4, 8, 9]. There are 5,567 ft 2 Document No: CHLE-006, Rev2 Page 6 of 14 Title: STP Material Calculations (10% submerged and 90% non-submerged) of aluminum in containment at STP[10]. This corresponds to a ratio of aluminum surface area to pool volume of 0.078 ft 2/ft 3.3.1.2 CHLE Test Parameter Based on the information obtained from the STP survey for aluminum, the surface area of aluminum in the CHLE tests will be 2.64 ft 2 in the vapor space (unsubmerged, subjected to sprays) and 0.47 ft 2 submerged in the pool solution.3.2 Fiberglass insulation 3.2.1 STP Survey Two types of fiberglass insulation can be present in containment:

(1) Nukon and (2) Microtherm.

Nukon insulation is classified as E-glass which is an amorphous material containing silicon dioxide, calcium oxide, aluminum oxide and boric oxide [4]. Microtherm insulation is classified as amorphous silica material which contains materials made up of predominately amorphous silica with a small percentage of E-glass [4]. The amount of fiberglass insulation is determined by breaktype and is listed in Table land the ratio of material volume to solution volume is listed in Table 2.Table 1: Volume of materials in STP as a function of breaktype FiberglassType SBLOCA (ft') MBLOCA (ft') LBLOCA (ft')Nukon N/A 1 60 N/A Microtherm N/A 0 N/A 1. N/A: Not available at the time of completion of this report. Values will be determined before conducting SBLOCAand LBLOCAtests.

Table 2: Ratio of fiberglass material volume to pool volume to be used in the CHLE analyses Breaktype Nukon Ratio (ft'/ft')

Microtherm Ratio (ft'/ft')SBLOCA N/A' N/A MBLOCA 8.36E-04 0 LBLOCA N/A N/A 1. N/A: Not available at the time of completion of this report Values will be determined before conducting SBLOCA and LBLOCAtests.

3.2.2 CHLE Test Parameter The amount of insulation is a function of breaktype which results in a range of material volumes. This range is dictated bythe break sizes that fall within the category of LOCA scenarios.

The amount of insulation material to be used in each of the 30 Day tank test is determined by debris generation calculations by the CASA Grande program and is shown in Tables land 2.Document No: CHLE-006, Rev2 Page 7 of 14 Title: STP Material Calculations

3.3 Concrete

3.3.1 STP Survey Most concrete surfaces in within containment are coated [11]. However, some uncoated surfaces could be exposed to the pool or spray water by direct jet impingement within the zone of influence (ZOI). Also, there are some concrete surfaces with unqualified ordegraded qualified coatings which mayfail. The quantity of exposed concrete in STP containment that needsto be addressed in the CHLE tests is currently being determined.

Also, bench tests may be considered to characterize metals leaching from concrete.

As shown bythe evaluation of Table 3very little calcium (<0.5mg/L) in solution theoretically may be required toform a calcium phosphate precipitate in a TSP buffered system, but depends on temperature and pH.Therefore evaluation of leaching rates of metals, specifically calcium, from the concrete is necessary.

Table 3: Calcium concentration required toform precipitation.

TSP Boron Calcium Test Concentration Concentration Concentration Case (mg/L) (mg/L) pH A (mg/L) B 1 4032 2486 7.33 0.36 2 4032 2659 7.26 0.41 3 4032 2897 7.18 0.48 4 4435 2486 7.36 0.31 A Value reference to 21 °C., value determined using STP operating median boron concentration and STP representativeTSP concentration B 8ased on the solubility of [-Ca(PO4)2with solubilityconstant Log K = -28.92 [12], ignoring activity coefficients 3.3.2 CHLE Test Parameter The concrete used for the CHLE tests will be made atthe University of New Mexico (UNM) followingthe procedure provided by Westinghouse and used forthe ICET tests [13].3.4 Latent debris 3.4.1 STP Survey This material type accountsfor dust and fibersthat exist in containment as a result of environmental conditions.

The maximum valueof latentcdebris in STP containment has been determined to be 170 lb.dirt/dustand 30 lb. fiber[14].

This correspondstoa mass to volume ratio of 0.002 lb/ft 3 fordirt/dust and 0.0004 lb/ft 3 forfiber in containment.

While it is known thatthe TSP buffered system may be sensitivetothe addition of metals to solution, it is unknown if the soil leaches any attributable concentration of metals. Therefore, bench tests may be considered to evaluate metal leaching from the STP soil.Document No: CHLE-006, Rev2 Page 8 of 14 Title: STP Material Calculations 3.4.2 CHLE Test Parameter Latent debris is defined as fiberand dust. The fiber used for Latent debris is Nukon insulation and will be taken into account within the total fiberglass added totests. The dust used in the CHLE analyses is soil obtained from the STP site usingthe standard environmental sampling procedure

[15]. The use of the material in the 30 Day CHLE test will be evaluated by bench tests that investigate metal leaching.

Any detectable metal leaching will be incorporated as a salt in the CHLE tank test.3.5 Zinc (Galvanized Steel and Coating)3.5.1 STP Survey Galvanized steel and zinc based paints orcoatings are sources of zinc within containment.

There are 273,749 ft 2 (10% submerged and 90% non-submerged) of galvanized steel in STP containment

[10]. This quantity corresponds to a surface area to volume ratio 3.81 ft 2/ft 3.There are 417,839 ft 2 (10%submerged and 90% non-submerged) of inorganiccoated zincsteel within containment atSTP [16]. This quantity corresponds to a surface area to volume ratio of 5.82 ft 2/ft 3.These numbers are the conservative quantities.

They are currently under review by the team to determine nominal quantities.

These values will be revised beforetests are conducted.

3.5.2 CHLE Test Parameter The inclusion of galvanized steel and zinc coated material in the LBLOCA 30-day test is currently under review bythe project team. if they are included, the surface area of galvanized steel in the CHLE tests will be divided between the vaporspace (unsubmerged, subjected to sprays) and submerged in the pool solution.

The surface area of zinc coated material in the CHLE tests will be also be divided between the vapor space (unsubmerged, subjected to sprays) and submerged in the pool solution.

The quantities will be determined priorto conductingthe CHLEtests.

3.6 Copper

3.6.1 STP Survey Various source of copperare found in containment at STP. These sources include wiring, cables, and tubes of the fan coolers [17].3.6.2 CHLE Test Parameter While copper is present in STP containment, none of itwill be submerged during a LOCA. In addition, significant quantities of the unsubmerged copperwill be protected from spray impingement.

Copper cable and wiring will not be subjected to spray as long as some insulation is in place.As a result of all these factors, copper is excluded from the long-term CHLEtests.

Howeversince it is known that copper may accelerate aluminum corrosion

[7], the effects of copperon aluminum corrosion underSTP conditions will be investigated in short-term bench-scale corrosion tests.Document No: CHLE-006, Rev2 Page 9 of 14 Title: STP Material Calculations 3.7 Lead 3.7.1 STP Survey Lead exists in STP containment in two forms: (1) lead blankets and (2) lead pipe insulation.

There are approximately 500 lead blankets (ift x 3 ft) in containment (45% are submerged and 55% not submerged)

[18]. The equivalentthickness fora lead sheet in the blanket is 3/16 [19]. These lead blankets are stored in drums with holes to prevent them from floating away if containmentfloods, but the sources of lead are sealed within vinyl-laminated nylon covers which provide a protection barrier between the materialand pool solution.The lead pipe insulation is sparsely present in containment as illustrated by Figure 1. The volume/mass values associated with the locations as listed in Figure 1 are listed in Table 4. Given that onlythree locations within containment have lead pipe insulation, the probability thatthey will be in the zone of influence is relatively low [20]. Since the contribution of lead from the pipe insulation is not a likely occurrence in a LOCA, the probable contribution from this material tothe pool solution is neglected.

t-igure 1: Eimpilflea LAU image snowing iocations or leaa insuiatea pipes are inaicatea in yellow.Document No: CHLE-006, Rev2 Page 10 of 14 Title: STP Material Calculations Table 4: Volume and mass of lead insulation within STP containment Number Official Name Mass (Ibm) Volume (ft')1 4CV-10010-BB1 930.7771 14.90962 2 4RC-1123-BB1 1437.241 23.02239 3 4RC-1422-BB1 1399.997 22.42536 Total Lead Blanket Insulation 3768.015 60.35737 A literature search for lead precipitates, using ions known to exist in solution as a guide (regardless of concentration), was done to identify possible precipitates and gatherthermodynamic information associated with the solubility limits, Table 5. Since lead can form a variety of precipitate products in the pool, some which theoretically require very little soluble lead (lead phosphates and lead chlorides) in solution (Table 6), bench tests may be considered to characterize lead corrosion in the CHLE pool chemistry and the formation of precipitates.

It should also be noted, however, that phosphate is commonly used as a corrosion inhibitor for lead.Table 5: Lead precipitate and associated thermodynamicdata associated with solubility Solids Log K Sources Pb(B0 2)2 (s) 6.5192 NIST[12]Pb(OH)2 (s) 8.15 MTQ3.11[21]

Pb 2 0(OH)2 (s) 26.19 NIST[12]Pb 3 (PO4)2 (s) -43.53 NIST[12]PbHPO 4 (s) -23.805 NIST[12]PbO:0.3H 2 0(s) 12.98 MTQ3.11[21]

PbCI 2 -4.78 NIST[12]PbSO 4 -7.79 NIST[12]Solubility A Solubility 2B Solid (mg/L) (mg/L)Pb(C 2 H 3 0 2)[22] 551,006 2,185,084 Pb(N0 3)2 [23] 565,000 1,270,000 A Solubiliy i 1for lead acetateis at 25C and for Lead Nitrate itis at 20 C B Solubility 2 for lead acetate is at 50C and for Lead Nitrate is at 100 C Document No: CHLE-006, Rev2 Page 11 of 14 Title: STP Material Calculations Table 6: Lead concentration to form lead phosphate precipitate using STP representative chemistry TSP Boron lead Concentration Concentration Concentration Test Case (mg/L) (mg/L) pH (mg/L)1 4032 2486 7.33 2.50E-05 2 4032 2659 7.26 2.87E-05 3 4032 2897 7.18 3.38E-05 4 4435 2486 7.36 2.14E-05 3.7.2 CHLE Test Parameter While there is a significant surface area of lead and copperavailable in containment, lead will be excluded from the CHLE analyses since it is not directly exposed to spray or pool solution and the probability of material exposure due to destruction of protective outer layers is very low.3.8 Uncoated Carbon Steel 3.8.1 STP Survey Uncoated carbon steel is generally present in containment as structural supports.

168,836 ft 2 (10%submerged and 90% non-submerged) is present in STP containment

[16]. This quantity correspondsto a surface area to volume ratio of 2.35 ft 2/ft 3.3.8.2 CHLE Test Parameter While there is a significant amount of carbon steel in containment, previous research found that carbons steel corrosion occurred in insignificant amounts [9]. The ICET tests contained 0.15 ft 2/ft 3 of carbon steel, with 34 percent of the material submerged and 66 percent in the vapor space. The unsubmerged uncoated steel coupons had very little change in weight, with changes rangingfrom

+1.3to -0.4 g, compared to a mean pre-test weight of 1025 g. The submerged uncoated steel coupons in Test #1 (high pH) had a weight change of -23.3 g, but had very little weight change in the remainderof the tests (ranging from +1.4 to -1.1 g). In ICETTest #2, which corresponded most closelytothe STP conditions, the unsubmerged coupons gained 1.3g and the submerged couponsgained 1.4g of weight. Iron concentrations remained nearly undetectablethroughout the full duration of all the ICETtests.

The highest concentrations of iron were less than 0.1 mg/L, duringthe first few days of ICET Test #3. Iron was undetectable duringthe entire ICETTest#2.

Based on the previously mentioned results, uncoated carbon steel will not be included in the CHLEtank tests.Document No: CHLE-006, Rev2 Page 12 of 14 Title: STP Material Calculations 4 Summary A survey of material in containment at STP was performed.

For materialsthat are expected to contribute to the containment pool chemistry, a ratio of surface area or volume of material tothe volume of solution in containment at STP was determined.

These ratios were used to determine the quantity of materials to include in the 30 Day CHLE tank test, Tables 7 and 8. This approach provides accurate materials and quantities to include in the integrated test as compared to previous evaluations.

This approach allows forfocus on materials of concern and probable chemical reactions associated with those materials.

This preliminary analysis of STP containment materials in this document is based on information that was available atthe time this document was prepared.

Where final information was not available,values for materialquantities used in CHLEtests will be identified in the individual test plan documents.

Table 7: Surface area of materials in the CHLE analyses Material Surface area(ft 2)Submerged Non-submerged Aluminum 0.47 ft2 2.64 ft2 Galvanized Steel N/A N/A'Zinccoating N/A N/A Concrete N/A N/A'Latent debris N/A N/A 1. N/A: Not available at the time of completion of this report. Values will be determined before conducting SBLOCA and LBLOCAtests.

Table 8: Volume of materials in STP containment for breaks of various sizes Fiberglass Type SBLOCA (ft') MBLOCA (ft 3) LBLOCA (ft 3)Nukon N/A' 60 N/A'Microtherm N/A 0 N/A -1. N/A: Not available at the time of completion of this report Values will be determined before conducting SBLOCA and LBLOCAtests.

DocumentNo:

CHLE-006,Rev2 Page 13 of 14 Title: STP Material Calculations 5 References

1. Alion, STPPost-LOCA Water VolumeAnalysis, 2012, Alion Science and Technology:

Albuquerque, NM.2. Burche II, R.C. and W.D. D., Corrosion Study for Determining Hydrogen Generationfrom Aluminum andZinc During PostAccident Conditions, 1976: Pittsburgh, Pennsylvania.

3. Griess, J.C. and B.A. L., Design Considerations ofReactorContainmentSpraySystems-PartIII.

The Corrosion of Materials in SpraySolutions, 1969: Oak Ridge, Tennessee.

4. Lane, A. E., et al., Evaluation of Post-Accident Chemical Effects in Containment Sump Fluids to Support GSI-191, 2006, Westinghouse Electric Company: Pittsburge, PA.5. Revie, R. and W. C., Corrosion and Corrosion Control:An Introduction to Corrosion Science and Engineering.

2008, Hoboken, NJ: Wiley.6. STP, TGX -RequiredMassof TSPforLOCA Sump Solution pH Adjustment, 2001, South Texas Project Nuclear Operating Company.7. Davis, J.R., ed. Corrosion of Aluminum andAluminumAlloys.

1999, ASM International.

8. Reid, R.D., K.R. Crytzer, and A.E. Lane, Evaluations ofAdditionallnputs to the WCAP-16530-NP Chemical Model, 2007, Westinghouse Electric Company Pitssburge, PA.9. DalI man, J., et al., Integrated Chemical Effects Test Project: Consolidated Data Report, 2006, Los Alamos National Laboratory:

NM.10. STP, Added Commodities Inside The RCB, 2003, South Texas Project.11. Sande, T., K. H. Howe, and J.J. Leavitt, Expected Impactof ChemicalEEffects on GSI-191 Risk-Informed Evaluation forSouth Texas Project, 2011, Alion Science and Technology:

Al buqueruqe, NM.12. N IST, NISTCritically Selected Stability Constants of Metal Complexes:

Version 8.0, 2008, National Institute of Standards and Technology:

Gaithersburg, MD.13. LAN L, NUREG/CR-6914, VoL 1, Integrated Chemical Effects Test Project: Consolidated Data Report (Appendix B), 2006, Los Alamos National Laboratory:

Los Alamos, N M.14. Al ion, GS1 191 ContainmentSump Evaluation:

Debris Generation, 2008.15. STP, REMP Sample Collection, in Soil Surface Sample2009.

p. 26.16. Schulz, W., Zinc and Galvanized Steel inside containment, J. Leavitt, Editor 2012, G- Mail.17. STP, RCB HVACHeat Sink Area Estimate, South Texas Project.18. Schulz, W., Lead inside containment, J. Leavitt, Editor 2012, G- Mail.19. Industries, L. Lead Blankets.

2012; Product specifications].

Available from: http://www.lancsindustries.com/lead-wool-blankets/.

20. Merte ns, A., CAD Model Summary: Sourth Texas ReactorBuilding CAD Modelfor Use in GSI-191 Analyses, 2011, Alion Science and Technology:

Albuquerque, NM.21. Allison, J.D., D.S. Brown, and K.J. Novo-Gradac, MINTEQA2/PRODEFA2, A Geochemical Assessment Modelfor EnvironmentalSystems:

Version 3.0 User's Manual, 1991, Environmental Protection Agency, Office of Research and Development:

Washington, DC.22. Dundon, M. L. and W. E. Henderson, Measurement of Solubility byfloating Equilibrium.

The solubility of Lead Acetate. Journal of the American Chemical Society, 1922. 44(6): p. 1196-1203.

23. Lide, D.R., ed. CRC Handbook of Chemistry and Physics 80th Edition. 1999.Document No: CHLE-006, Rev2 Page 14 of 14 DocumentNo:

CHLE-006,Rev2 Page 14 of 14