rpp-wtppdc 24590-bof-nld-dep-00001 bof...b component-specific discussion in normal operation, the...
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CORROSION EVALUATION
24590-BOF-NlD-DEP-00001 Rev.1
DEP-VSL-00001 Low Point Drain Vessel Appurtenances
DEP-AGT-0000 I DEP-PMP-0000 I A/B
Contents of this document are Dangerous Waste Permit affecting
Results
Materials Considered
Materials Considered Acceptable Materials (UNSNo.)
Type 304L (S30403) X Tvoe 316L (S31603) X AL-6XN® 6% Mo (N08367) X Hastelloy® C-22® (N06022) X
Ill I llllll 111111111111111111 R11873326
Recommended Material Types: Head/shell-Type 304 or Type 316 (max 0.030% C; dual certified) Internals -Type 304 or Type 316 (max 0.030% C; dual certified)
Minimum Corrosion Allowance: 0.040 inch (includes 0.024 inch corrosion allowance and 0.016 inch erosion allowance)
Inputs and References • Operating Temperature (°F) (nom/max): 67/123 (24590-BOF-MVC-DEP-000l l) • Uniform corrosion allowance (inch): 0.024 (24590-WTP-M0E-50-00012) • Uniform erosion allowance (inch) 0.016 (24590-WTP-M0C-50-00004) • Design corrosion allowance (inch): 0.040 (24590-WTP-M0C-50-00004) • Location: Room E-B001 (24590-BOF-Pl-25-00001) • Operating conditions are as stated in the applicable sections of Direct Feed LAW Process Corrosion Data (24590-BOF-RPT-PR-15-001)
Assumptions and Justification (refer to Section 19-References) • Source data presented on the Process Corrosion Datasheet (PCDS) are conservative with respect to corrosion.' • Solids concentrations are not provided in the PCDS at this time. The range for solids concentration will be established in the DFLAW
PIBOD. For the purposes of establishing a minimum uniform erosion allowance, solids concentration is assumed to be greater than 2 wt%. The erosion allowance under this assumption will be bounding. The design corrosion allowance is unchanged by this assumption. No justification for using a greater than 2 wt% solids is necessary; actual solids concentration will be available at a later revision.
• It is assumed that the contents of the DEP-VSL-00001 will be almost entirely water. 2
• The DEP process vessels are equipped with a spray mechanism to facilitate adequate internal vessel washing.'
Operating Restrictions • To protect against localized corrosion in the vessel and transfer piping, develop procedure to bring the fluids entering the vessel to
within the limits defined for the material of the vessel in 24590-WTP-RPT-M-11-002, WTP Materials Locali=ed Corrosion Design Limits. in the event that sampling determines that temperature, pH, or chloride concentration exceeds those limits.
• Develop a procedure to control, at a minimum, cleaning, rinsing, and flushing of vessel and internals, as applicable. • Develop procedure to control lay-up and storage; includes both before operation and after operation. • Procedures are to be reviewed and accepted by MET prior to use.
Concurrence TD Operations
Revised sect 17 to discuss DFLA W PIBOD properties evlewed lt'.I Minor editorial corrections t'2£Pff!'l!.!!'1s
1 Typographical error corrected on sheets 13 OrgNameMET
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& 15 of17 (PCDS) o,1g1nator .
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24590-BOF-EIE-PR-17-0005 rolled r-.1an11.201a O<g ..............
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forward to the next revision DLAdler APRangus RBDavis TErwin
0 8/24/16 Initial Issue DLAdler APRangus RBDavis TErwin
REV DATE REASON FOR REVISION ORIGINATE CHECK REVIEW APPROVE
Sheet: 1 of16
24590-BOF-NlD-DEP-00001 Rev.1
CORROSION EVALUATION
Please note that source, special nuclear and byproduct materials, as defined in the Atomic Energy Act of 1954 (AEA), are regulated at the U.S. Department of Energy (DOE) facilities exclusively by DOE acting pursuant to its AEA authority. DOE asserts, that pursuant to the AEA, it has sole and exclusive responsibility and authority to regulate source, special nuclear, and byproduct materials at DOEowned nuclear facilities. Information contained herein on radionuclides is provided for process description purposes only.
DEP-VSL-0000 I: Sheet: 2 of 16
This bound document contains a total of 16 sheets.
CORROSION EVALUATION
Corrosion/Erosion Detailed Discussion
24590-BOF-NlD-DEP-00001 Rev. I
DEP-VSL-00001 is the Low Point Drain Vessel. During normal operations, this vessel receives the line drains and flushes from the Direct Feed Low-Activity Waste (DFLA W) transfer line, the Low-Activity Waste (LAW) and Analytical Laboratory (Lab) effluent transfer lines, and the DEP evaporator concentrate transfer line. Potential non-routine operations include receipt ofDEP vessel overflows or the off-spec evaporator concentrate drain. The collected fluid in DEP-VSL-00001 is transferred to DEP-VSL-00002. A mechanical agitator provides mixing capability in the vessel. Fluid is transferred out of the vessel using pump DEP-PMP-0000IA/B. DEP-VSL-00001 overflows into DEP-SUMP-0000 I. The vessel contents can be sampled and the vessel is monitored for level, pressure, and temperature. DEP-VSL-0000 I is purged with air drawn through the vessel head space and is vented to the Vessel Vent Header. The vessel is equipped with a spray nozzle for vessel washing with demineralized water.
1 General/Uniform Corrosion Analysis
a Background General corrosion or uniform corrosion is corrosion that is distributed uniformly over the surface of a material without appreciable localization. This leads to relatively uniform thinning on sheet and plate materials and general thinning on one side or the other ( or both) for pipe and tubing. It is recognized by a roughening of the surface and by the presence of corrosion products. The mechanism of the attack typically is an electrochemical process that takes place at the surface of the material. Differences in composition or orientation between small areas on the metal surface create anodes and cathodes that facilitate the corrosion process.
b Component-Specific Discussion In normal operation, the vessel will contain mostly fluids flushed down the drains, essentially water, at ambient temperature. Either Type 304L or Type 316L is expected to be sufficiently resistant to water with a probable general corrosion rate of less than I mpy. A higher alloy, such as AL-6XN®, would also be suitable. A 0.04 inch corrosion allowance is recommended.
2 Pitting Corrosion Analysis
Pitting is localized corrosion ofa metal surface that is confined to a point or small area and takes the form of cavities According to Dillon (2000), in alkaline solutions, pH> 12, chlorides are likely to promote pitting only in tight crevices. Normally the vessel is to operate at 67 °F (123 °F max) at a pH of 12.3. The vessel is operated such that conditions do not promote localized corrosion; the tank contents are not stagnant.
The expected chemistry and temperature in this tank fall within the limits for localized corrosion established for 300 series stainless steel in Table 1-2 of WTP Materials locali=ed Corrosion Design limits, 24590-WTP-RPT-M-11-002. For convenience, this comparison is documented on page 6 of this corrosion evaluation.
3 Crevice Corrosion Analysis
Crevice corrosion is a form of localized corrosion of a metal or alloy surface at, or immediately adjacent to, an area that is shielded from full exposure to the environment because of close proximity of the metal or alloy to the surface of another material or an adjacent surface of the same metal or alloy. Crevice corrosion is similar to pitting in mechanism. As the vessel will be agitated prior or during sampling and prior or during transferring, contents will not be stagnant and any solids will be maintained in suspension.
Crevices in this tank are limited by the design and fabrication practice. The expected chemistry and temperature in this tank fall within the limits established for 300 series stainless steel in Table 1-2 of24590-WTP-RPT-M-l l-002.
4 Stress Corrosion Cracking Analysis
Stress corrosion cracking (SCC) is the cracking of a material produced by the combined action of corrosion and sustained tensile stress (residual or applied). The exact amount of chloride required to cause SCC is unknown. In part this is because the necessary concentration varies with temperature, metal sensitization, and the environment; also, chloride tends to concentrate under heat transfer conditions and by evaporation.
The chemistry and operating conditions in this vessel fall within the limits established for either 300 series stainless steel in Table 1-2 of 24590-WTP-RPT-M-11-002.
5 End Grain Corrosion Analysis
End grain corrosion is preferential corrosion which occurs along the worked direction of wrought stainless steels exposed to highly oxidizing acid conditions. End grain corrosion is exclusive to metallic product forms with exposed end grains from shearing or mechanical cutting. Such conditions are not present in this vessel; therefore, end grain corrosion is not a concern.
DEP-VSL-00001: Sheet: 3 of 16
CORROSION EVALUATION
6 Weld Corrosion Analysis
24590-BOF-NlD-DEP-00001 Rev.1
The welds used in the fabrication will follow the WTP specifications and standards for quality workmanship. The materials selected for this fabrication are compatible with the weld filler metals and ASME/ A WS practice. Using the welding practices specified for the project, there should not be gross micro-segregation, precipitation of secondary phases, formation of unmixed zones, or volatilization of the alloying elements that could lead to localized corrosion of the weld. Assuming that correct weld procedures are followed, no preferential corrosion of weld beads or heat-affected zones occurs in the expected aqueous chemistry and ambient temperature.
7 Microbiologically Influenced Corrosion Analysis
Microbiologically influenced corrosion (MIC) refers to corrosion affected by the presence or activity, or both, of microorganisms. The proposed operating conditions are suitable for microbial growth. However, introduction of microbes is unlikely unless untreated process water is present, so the possibility of MIC is small.
8 Fatigue/Corrosion Fatigue Analysis
Fatigue is the process of progressive localized permanent structural change occurring in a material subjected to fluctuating stresses at less than the ultimate tensile strength of the material. Corrosion fatigue is the process wherein a metal fractures prematurely under conditions of simultaneous corrosion and repeated cyclic loading at lower stress levels or fewer cycles than would be required to cause fatigue of that metal in the absence of the corrosive environment. Corrosion fatigue is not an issue because the number ofloading cycles for the operation window is limited and low. The number of thermal cycles (room temperature to 123 °F max) is also low.
9 Vapor Phase Corrosion Analysis
Conditions in the vapor phase and at the vapor/liquid interface can be significantly different than those present in the liquid phase. The corrosion evaluation of the vapor phase portion of the vessel considers the surface will be covered with a water vapor condensate. The vapor space corrosion rates are less than the immersed surfaces and the transport away from the surface will be less because of the no-flow conditions. As compared to the corrosion in the immersion section, the corrosion rates in the vapor space are much lower. Vapor phase corrosion is not a concern.
10 Erosion Analysis
Erosion is the progressive loss of material from a solid surface resulting from mechanical interaction between that surface and a fluid, a multi-component fluid, or solid particles carried with the fluid. Velocities within the vessel are expected to be below 12 ft/s. The vessel contents are almost entirely water, so solids should be negligible. However, the solids concentration is to be established later; a solids concentration of greater than 2 wt¾ will be used at this time. Erosion allowance of0.016 inch for Type 304L and 316L stainless steel components with solids content greater than 2 wt¾ (bounding) at velocities below 12 ft/sis based on 24590-WTP-M0C-50-00004, Wear Allowance for WTP Waste Slurry Systems. The calculation was prepared for waste slurry service. As this vessel's contents are essentially water, the erosion rate will be less than calculated; the erosion allowance of 0.016 inch is conservative.
11 Galling of Moving Surfaces Analysis
Where two metals are moving in contact with each other without lubrication, there is a risk of damage to their surfaces. No moving unlubricated surfaces are present within the vessel; therefore, galling is not a concern.
12 Fretting/Wear Analysis
Fretting corrosion refers to corrosion damage caused by a slight oscillatory slip between two surfaces. Similar to galling but at a much smaller movement, the corrosion products and metal debris break off and act as an abrasive between the surfaces, producing a classic three-body wear problem. This damage is induced under load and repeated relative surface motion. Conditions which lead to fretting are not present in this vessel; therefore, fretting is not a concern.
13 Galvanic Corrosion Analysis
Galvanic corrosion is accelerated corrosion caused by the potential difference between the two dissimilar metals in an electrolyte. One material becomes the anode and the other the cathode. Corrosion occurs on the anode material at the interface where the potential gradient is the greatest. A potential difference of more than 200 m V is needed for a sufficient driving force to initiate galvanic corrosion. The potential difference for any combination of alloys used in this component is not sufficient for galvanic currents to overcome the passive protective film. For such alloys, there is negligible potential difference so galvanic corrosion is not a concern.
14 Cavitation Analysis
Cavitation is the formation and rapid collapse of cavities or bubbles of vapor or gas within a liquid resulting from mechanical or hydrodynamic forces. Cavitation is typically associated with pumps and orifice plates, not vessels. Cavitation is not a concern.
WTP design limits conditions which lead to cavitation; therefore, cavitation is not a concern.
DEP-VSL-00001: Sheet: 4of16
CORROSION EVALUATION
15 Creep Analysis
24590-BOF-NlD-DEP-00001 Rev. I
Creep is time-dependent strain occurring under stress and is described as plastic flow, yielding at stresses less than the yield strength. Creep is only experienced during operations at high temperatures. Temperatures much greater than one half the absolute melting temperature of the alloy are necessary for thermally-activated creep to become a concern. The vessel operating and design temperatures are too low to lead to creep; therefore, creep is not a concern.
16 Inadvertent Nitric Acid Addition
At this time, the design does not provide for the regular use of nitric acid reagent in this system. Addition of nitric acid into the system would require operator intervention to complete the routing. Nitric acid is a known inhibitor solution for austenitic stainless steels. The presence of nitric acid is not a concern for the stainless steel; especially at the operating temperatures listed.
17 Conclusion & Justification
The conclusion of this evaluation is that DEP-VSL-00001 can be fabricated from either 300 series stainless steel and is capable of 40 years of service. Based on the expected operating conditions, any of these materials will be satisfactorily resistant to uniform and localized corrosion. The expected uniform corrosion over 40 years is 0.024 inch. The expected uniform erosion loss over 40 years is 0.016 inch (bounding and conservative). A total general corrosion and erosion allowance of 0.04 inch is recommended and is sufficient.
The localized corrosion assessment is based on comparison of the process conditions documented in 24590-BOF-RPT-PR-l 5-00! against the limits for Type 304L and Type 316L documented in 24590-WTP-RPT-M-11-002. The PCDS, which takes into account routine conditions adjusted to contract maximum values, is within the applicable design limits.
Sections of the issued Process Corrosion Data report (PCDS) (attached to the corrosion evaluation) include several references to the Process Inputs Basis of Design (PI BOD) for LAW and EMF, 24590-WTP-DB-PET-17-001 which was not issued at the time the PCDS was issued. The PIBOD for LAW and EMF has been issued. Any variance in the values between the PIBOD and PCDS associated with streams and stream characteristics used to evaluate corrosion and erosion have been reviewed and evaluated. The evaluation concluded that the analysis described in this corrosion evaluation was bounding and the material selection recommendations remain as initially issued.
Conditions do not suggest that localized erosion will occur; therefore, no localized erosion allowance is necessary for the vessel.
18 Margin
The vessel is designed with a uniform corrosion allowance of0.04 inch based on the range of inputs, system knowledge, handbooks, literature, and engineering judgment/experience. The service conditions used for materials selection has been described above and results in a bounding uniform loss due to uniform corrosion and erosion of0.040 inches. The specified corrosion allowance equals the predicted corrosion loss specified in the input calculations. The uniform corrosion design margin for the operating conditions is sufficient to expect a 40 year operating life and is justified in the referenced calculation (24590-WTP-M0C-50-00004 ).
The erosion allowance of0.016 inch is based on 24590-WTP-M0C-50-00004. The recommended uniform erosion allowance provides sufficient protection for erosion of the vessel walls. The margin in the erosive wear allowance is contained in the referenced calculation (24590-WTP-M0C-50-00004).
The maximum operating parameters for this vessel are defined in the PCDS. As shown in the following table, the PCDS calculated pH, chemistry, and temperature are bounded by the materials localized corrosion design limits documented in the WTP Materials Localized Corrosion Design Limits report. The difference between the design limits and the operating maximums (PCDS value) is the localized corrosion design margin and, based on the operating conditions, is sufficient to expect a 40 year operating life. The Low Point Drain Vessel, DEP-VSL-00001, is protected from localized corrosion (pitting, crevice, and stress corrosion) by operating within the acceptable range of the design limits. Operational and process restriction will be used to ensure the limits are maintained.
DEP-VSL-00001: Sheet: 5 of 16
CORROSION EVALUATION
24590-BOF-Nt D-DEP-00001 Rev. 1
MATERIALS LOCALIZED CORROSION DESIGN LIMITS -Type 304L/316L
Tem[!erature Jill OF
DESIG N LIMIT ISO max 2: JO
Low Point Drain Vessel outlet stream 123 12.27
DEP03)
Inlet Vessels to DEP-VSL-00001 Tem[!erature Jill OF
DESIGN LIMIT 150 max 2: 10
LAW feed transfer stream nush/drain < 140 > 12 I.I I E-02 I.00E-02 (LCP07h)
Remainin inlet streams will be established later or are non-routine and not modeled. Inlets to DEP-YSL-00001 based on 24590-BOF-RPT-PR- l 5-00 I, Figure 2
References sources for this table:
I. Design limits - 24590-WTP-RPT-M- 11 -002, WTP Materials Locali=ed Corrosion Design Limits
0-/0H· molar
5 2
0.598
0-/0H· molar
52
1.11 3
2. DEP-YSL-00001 (DEP03) - 24590-BOF-RPT-PR- I 5-00 I, Direct Feed LAW Process Corrosion Data, Figure A- I 3. LA WPS transfer (LCP07h) - 24590-BOF-RPT-PR- l 5-00 I, Direct Feed LAW Process Corrosion Data, Sec/ 4. 1.3. J. J and Figure A-I
DEP-VSL-00001 : Sheet: 6 of 16
CORROSION EVALUATION 19 References:
24590-BOF-Nl D-DEP-00001 Rev. I
I. 24590-BOF-3ZD-25-0000I, WTP Direct Feed Low Activity Waste (DFLAW) Facility and System Design Descriptions. 2. 24590-BOF-MVC-DEP-000l l, Process Datafor the Low Point Drain Vessel, DEP-VSL-00001, and Pumps, DEP-PMP-00001 AIB. 3. 24590-BOF-P 1-25-0000 I, Balance of Facilities Law Efjluent Process Bldg & Law Efjluent Drain Tank Bldg General Arrangement
Plan at Elev 0 Ft - 0 In. 4. 24590-BOF-RPT-PR- l 5-00 I, Direct Feed LAW Process Corrosion Data. 5. 24590-WTP-DB-PET-17-001, Process Inputs Basis of Design (P/BOD)for LAW and EMF 6. 24590-WTP-M0C-50-00004, Wear Allowance for WTP Waste Slurry Systems with ECCN 24590-WTP-M0E-50-00012. 7. 24 590-WTP-RPT-M-1 1-002, WTP Materials Locali=ed Corrosion Design limits. 8. CCN 130173, Dillon, CP (Nickel Development Institute), Personal Communication to JR Divine (ChemMet, Ltd., PC), 3 Feb 2000.
Additional Reading • 24590-BOF-M6-DEP-0000I00I, P&ID-BOFIEMF Direct Feed LAW-EMF Process System-Low Point Drain Vessel-DEP-VSL-
00001. • 24590-BOF-M6C-DEP-00009, Design Pressure and Temperature Calculation for the EMF DEPIDVPIAFRINLDISHR/SNR Systems. • 24590-BOF-MVD-DEP-00002, Mechanical Data Sheet - 24590-BOF-MV-DEP-VSL-0000I - Low Point Drain Vessel. • 24590-WTP-RPT-M-04-0008, Evaluation of Stainless Steel and Nickel Alloy Wear Rates in WTP Waste Streams al Low Velocities. • CCN 130171, Ohl, PC to PG Johnson, Internal Memo, Westinghouse Hanford Co, Technical Bases for Cl-and pH Limits for Liquid
Waste TankCars,MA PCO:90/01,January 16, 1990. • Agarwal, DC, Nickel and Nickel Alloys, In: Revie, WW, 2000. Uhlig's Corrosion Handbook, 2nd Edition, Wiley-Interscience, New
York, NY 10158 • Davis, JR (Ed), 1987, Corrosion, Vol I 3, In "Metals Handbook", ASM International, Metals Park, OH 44073 • Davis, JR (Ed), 1994, Stainless Steels, In ASM Metals Handbook, ASM International, Metals Park, OH 44073 • Hamner, NE, 1981, Corrosion Data Survey, Metals Section, 5th Ed, NACE International, Houston, TX 77218 • Jones, RH (Ed.), 1992, Stress-Corrosion Cracking, ASM International, Metals Park, OH 44073 • Koch, GH, 1995, Locali=ed Corrosion in Halides Other Than Chlorides, MTI Pub No. 41, Materials Technology Institute of the
Chemical Process Industries, Inc, St Louis, MO 63141 • Sedriks, AJ, 1996, Corrosion of Stainless Steels, John Wiley & Sons, Inc., New York, NY 10158 • Uhlig, HH, 1948, Corrosion Handbook, John Wiley & Sons, New York, NY 10158 • Van Delinder, LS (Ed), 1984, Corrosion Basics, NACE International, Houston, TX 77084
DEP-VSL-0000 I: Sheet: 7 of 16
CORROSION EVALUATION
24590-BOF-Nl D-DEP-00001 Rev. I
PROCESS CORROSION DATA SHEET (extract)
Component(s) (Name/ID #) Low Point Drain Vessel {DEP-YSL-00001)
Facility EMF
In Black Cell? NO
Stream ID l DEP03 Chemlcals Unit AQUEOUS Cations 100m)
Al+3 (Aluminum) oom 278
Fe +3 (Iron) ppm 116
Hg+2 (Mercury) oom 0
Pb+2 (Lead) oom 9
Anions (ppm)
er (Chloride) ppm 395
co3-2 (Carbonate) ppm 2250
F (Fluoride) ppm 552
NO2- (Nitrite) ppm 482
NO3- (Nitrate) ppm 21 59
po4-3 (Phosphate) ppm 164
so/ (Sulfate) ppm 414
OH(aqr ppm 316
OH(sf ppm 404
pH 12.27
Suspended Solids wt% TBD
Temperature OF 123.00
Nominal Density (at 67°F) lb/ft3 62.3
TBD - Information wi ll be available later
DEP-VSL-0000 1: Sheet: 8 of 16
24590-BOF-Nl D-DEP-00001 Rev. 1
CORROSION EVALUATION
Figure A-1 DEP-VSL-00001 Aqueous PCDS
LC1'071, DEP03 :Ma-..p.._nm
Suspended Sohds [,-1 ' •I TBD ( IJ TBD
Total Sah, [m '•l TBD ( I)
TBD
Sodium Molority [M] TBD (I)
TBD
R.elatiH, Humidity r-~] u/a Dia
pH 11 .27 (7) 12_27
Anti-Foa:n A!enl (ppm) TBD ( I) TBD
roe [lbm'h<J TBD (I) TBD
Pres= [p,.i~J 0 (.!)
0
Tempennxe [C] 60 (3) n
Tempennxe [FJ 139 (3)
123
\VaR.- Flow Rate [1-lbr) TBD (I)
TBD
Total Aq~• Flow Ra~ [lbm.'br] TBD (I)
1llD
Total Flow Ra~ (1-'hr] TBD (I) TBD
Tr=ftt from Low poiul
VsttNote ~!::~~~ dr.un , ~ ssel.DEP-VSL-1 ( sat'.llle composition '" f~d ti=flw.hdram)
LC1'07k (7)
DEP03 -Aq-ow -: c:oat-.. tr:11d.oa, PP• (me, lq)
Ar 0 I 0 AJ-3 27S 2711
Am-3 0 I 0 As--5 0 0 B+3 14 14
Ba+2 0 0 Be+2 0 0
Bi+3 0 I 0
Ca+l 9
I 9
Cd+l 0 0 C'..+4 14 14 Co+2 0
I 0
Cr+3 3 3 Cr+<S 19 19 c.- 0
I 0
Cu+2 0 0
Eu+3 0 0 F~2 0
I 0
F.+3 116 116 H- 0 0
Hg-2 0
I 0
K- 44 44 La+3 0 0
i..+ 6
I 6
JMg+-2 3 3 Mn+4 13 13 Mo +<! 0
I 0
Na- 2359 23S9 Nd+3 0 0 Ni+1 I
I I
Pb+-2 9 9 Pd+2 0 0 Pr+4 0
I 0
Pu+4 0 0 Ra+2 0 0 Rt,- 0
I 0
Rh+3 0 0 Ru+4 0 0 Sb+3 0
I 0
S.+4 0 0 Si-4 4S .. Sr+2 I
I I
Ta+5 0 0 Tc+4 0 0 T..+4 0
I 0
Th+4 0 0 Ti+4 2 2 TI+5 0
I 0
U+4 0 0 V+3 0 0 W+6 0
I 0
Y+3 0 0 Zn+l 8 a Zr+4 4 '--- 4
.-\moas B(OH)4- 0
I 0
C204-2 60 60 Cl- 395 395
CN- 0
I 0
C03-2 2250 2250 F- 552 552
H2P04- I
I I
H2Si04-2 6 6 H3Si04- 13 13
HCO3- 0
I 0
HP04-2 0 0 HS03- 2 2 HSQ4.. 12 I 12
1- 0 0 !03- 0 0
NH4- 0 0 NO2- 482 482 NO3- 2 159 I 2159
0-2 107
I 107
0 2-2 I 1
OH(aq)- 316 316
OH(s}- 404
I 404
P04-3 164 164 SO3-2 3 3 S04-2 4 14 I 414
O.:•ani-cs AFA_DCMP 60 60 AFA_NVOC 3 3
1"-VOC 800 I 800 Sucrose 5
I 5
SVOC 2 1 21 voe 10 10
DEP-VSL-0000 I: Sheet: 9 of 16
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{I)
(4)
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(2)
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(I)
(I)
(I)
( 5)
(6)
24590-BOF-RPT-PR-15-001 , Rev 0 Direct Feed LAW Process Corrosion Data
Notes: (1) Values marl(e<l as 'TBD" will be provi<le<l in the revision to 24590-BOF-M4C-V11T-00004 (Ref. 5. 1.4(2)) base<l on APPS mo<lel runs for corroslOn (2) Maximum vessel property per 24590-BOF-MVC-DEP-00011 (Ref. 5.1.4 (7), Section 8 ) (3) ICD 30 Table 5 fee<l temperature llmlt (Ref. 5 .1.1 (6)) (4) pH of governing stream calculated as describe<l In Section 3.2 .2
base<l on composite stream concentrations. The pH calculation uses the stream <lensity from "DFLAW_High CI_F Fee<l Vectors - Leach
case.xlsx" Results (Ref. 5.1.4(2). 24590-RMCD-04948) (5) Maximum concentrations of all cocs except OH(aq)- In governing stream DEP03 per Ref. 5 .1.4(2) Table 8-1 (6) MINIMUM OH(aq)- value for governing stream DEP03 per Ref. 5 .1.4 (2) Table 8-1 (7) Values for LCP07h are the same as DEP03, since LCP07h Is the only Inlet stream lnclu<le<l In the analysis from Ref. 5 .1.4(2)
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T!J<> pro<'<'!>.) descn p h o r1 !:i m rln • npQ,·f co, ·er r onfl11{' pro< e °.lo op er afiu11s am/ 11u11 -ro11, ;,u:> li1 tfre,111e 1111 µ ,vc(~ .!t
opt•rulio11.r, . ni,eu surl, t~x ist. rho, v uld impot'' I ono ... 10,, or ,·,·os,on of p rocc.ss t•q u ipmNII.
1 lie µ n.:,c,•,>.) d es·cr ip l i o •H· µ ru , ·ided 111 thi · rep o rt a r e /<1r g(,mY11I h!fon1ra 11011 n11d r. fh•c tb ·r ofrl, e rorrolfou <'11g 1'1<)e,· ·s nna ly 1.s _lOr 1rm , µore r1c, ·, rite i1(/o r1110 1io,, i s c urn,n t oo! , ,,, 1/,e l i n ,v rlti., d u , ·11111•,11I i,· i\\·111,tf J l,v.H' p r oct •ss rlr.t;c1·111tu>11s .vf1011Jd 11n1 b.-~ n ~f. .. rr,r cd.for drs,gu.
24590-BOF-NlD-DEP-00001 Rev. I
CORROSION EVALUATION
24590-BOF-RPT-PR-15-001, Rev 0 Direct Feed LAW Process Corrosion Data
4.1 Low Point Drain Vt'sst'I (DEP-VSL-00001)
4.1.1 Dt'sC'1iption ofVt'sst'I
DEP-VSL-00001 is the EMF Low Point Drain Vessel. The Yessel is located below grade in the LAW Effiuent Drain Tank building (24590-BOF-Pl-25-00001. Ref. 5.13(31)). During nonual operations. this Yessel receiYes the line drains and flushes from the direct feed LAW transfer line. the LAW and Lab effiuent transfer lines. and the DEP eYaporator concentrate transfer line. Potential non-routine operations include receipt ofDEP Yessel o,·ei-flows or the off-spec evaporator concentrate drain. The collected fluid in DEP-VSL-00001 is transferred to the EYaporator Feed Vessel (DEP-VSL-00002).
A mechanical agitator (DEP-AGT-00001) pro,ides mixing capability in the Yessel. Fluid is transferred out of the ,·essel using ptuup DEP-Pl\IP-0OO0lA/B. DEP-VSL-00001 oYerflows into a Low Point Drain Area Sump (DEP-SlThlP-00001 ). The Yessel contents can be sampled and the Yessel is monitored for lewl. pressure. and temperan1re.
DEP-VSL-00001 is purged with air drawn through the ,·essel head space and is Yented to the Vessel Vent Header. Vessel ,·ent streams are described in Section 4.10. Tue Yessel is equipped \\1th a spray nozzle for ,·essel washing \\ith demineralized water.
Figure 2 is a sketch of the input and output anangement of-,treams for DEP-VSL-00001.
Figure 2 - DEP-VSL-00001 Sketch
LAW Fem Transfer FlushlDrain ~
RLD21 FkJsh/Orain ~--- ---- ----
RLD41 FkJsh/Orain [~-----
LVP21 FI.Jsl\'Draln
O.,erflows from Vessels DEP-VSL-~ ______ _ CHXI02,-3A/BIC. -4MI. -5M3 I ./"'
DEP13 Flush/Drain @~_1_311)------1~
DEP-EVAP-00001 Flush/Drain [- > ----- --- -- ~ DEP-HX-00001 FlushlDrain L=>------ -
SUmp Pl.mp Discharge c:EP-PMP- ~-. .. _ ooo32A1B. -34Ml. -38 L. . /
DEP-H000-00001 Drain
DEP-VSL-00001: Sheet: 10 of 16
t DEPAGT- DEP· 00001 PMP-
00001
----1
+ O.,erflow to DEP-SUMP-00001
-- Nonna! Opa-alion
Low JX)int clrain tralSfer to DEP-FLT -00003
- - - • Non-mJtine operallon
CORROSION EVALUATION
24590-BOF-NlD-DEP-00001 Rev. I
24590-BOF-RPT-PR-15-001, Rev 0 Direct Feed LAW Process Corrosion Data
4.1.2 Vt>sst>I Functions
Tue process ftmctions ofDEP-VSL-00001 are as follows:
• ReceiYe drains. flushes. and o,·erflows • Store liquid effluents
• Mix liquid effluents
• Transfer collected eftluents
Tue equipment perfonns additional system ftmctions beyond the process ftmctions. but these additional ftmctions are beyond the scope of this doc11ment. These ftmctions are not discussed any ftu1her in this docmuent. howeYer are listed below for completeness.
• Confine collected eftluents
• Sample collected eftluenh
• Flush system components
• _Repo11 system conditions
4.1.3
4.1.3.l
Dt>sniption of Proct>ss Functions for DEP-VSL-00001
Rttt>ipt Strt>ams
The following process sn·ea1m shO\m in PFD 24590-BOF-M5-Vl 7T-00011 (Ref. 5.1.3(1)) and P&ID 24590-BOF-l\16-DEP-00001001 (Ref. 5.1.3(5)) are inputs to DEP-VSL-00001.
• LCP0Th - LAW Feed Transfer FlushiDrain • RLD2lf - RLD21 FlushiDrain • RLD4 lc - RLD4 l FlushiDrain • L VP21 d - L VP21 Flnsh1Drain • o,·erflows from Yessels DEP-VSL-00002. -00003.A/B/C. -00004A/B. -00005AB • DEPBh- DEP13 Flush/Drain • DEP-EVAP-00001 FlmlJ/Drain • DEP-HX-00001 Flush/Drain • Smnp Pump Discharge DEP-Pl\1P-00032NB. -34A!B. -38 • DEP-HOOD-00001 Drain
4.1.3.1.1 LCP071l - LAW Feed Transfer Stream Flush/Drain
Flush water from LA WPS is used to pmh a batch of feed into LCP-VSL-00001/-00002. The total tran..,fer Yolume and stream density are monitored prior to reaching LCP-VSL-00001/2 in order to detect when the stream composition changes from LAW feed to flush water. When flush water is fast detected p1ior to LCP-VSL-00001/2. the YalYe aligmnent is changed to diYe11 the flush water to DEP-VSL-00001. \Vhen the flow offlmh water is stopped. the transfer line drains by graYity to DEP-VSL-00001. The total Yolume offlm,h water depends on the timing of the next plam1ed batch n·ansfer (i.e. IX line Yolume if next transfer is expected within 72 hom-s or I. 5X line ,·ohune if the next n·ansfer is expected to be more than 72 hmm, later). (Ref. 5.1.1(6). Section 2.6.2.).
DEP-VSL-0000 I: Sheet: 11 of 16
CORROSION EVALUATION
24590-BOF-NlD-DEP-00001 Rev. I
24590-BOF-RPT-PR-15-001, Rev 0 Direct Feed LAW Process Corrosion Data
Sodium :Molarity The LAW feed from the LA WPS is limited to a soclimn molarity range of 5M to S:lvl (Ref. 5.1.1(6). Table 5). The sodium concentrat10n of the LAW feed transfer drain should be negligible under nonnal operation since this stream will be mainly composed of flush water.
Tt"mpt"raturt" The LAW feed from the LA WPS is limited to a temperanJre ofc.:1.iocF (Ref. 5.1.1(6). Table 5). The nonnal temperan1re of the LAW feed n·ansfer drain dming nonnal operations will be established in the DFLA W PIBOD.
Solids Conct"ntration The LAW feed from the LA WPS is limited to a maximum suspended solids concentration of 3.4 wt~o (Ref. 5.1.1(6). Table 5). The range for solids concentration in the LAW feed transfer drain during normal operations will be established in the DFLA W PIBOD.
Dt"nsin· The LAW feed from the LA WPS is limited to a maxi.tmuu density of 1.35 kg/L (Ref. 5.1.1(6). Table 5). The density of the LAW feed transfer drain during nonnal operations will be established in the DFLA W PIBOD. howeYer it should be near to the density of water since this stream will be mainly composed of flush water.
.PH The LAW feed from the LA WPS is limited to pH of greater than 12 (Ref. 5.1.1(6). Table 5). The pH of the LAW feed n·ansfer drain during nonnal operations will be established in the DFLA W PIBOD.
4.1.3.1.2 RLD21f - RLD21 Flush/Drain
sn·eam RLD21 is the SBS condensate in RLD-VSL-00005 that is tramfe1Ted to DEP-VSL-00002 d11fing DFLA W operations.
The transfer line is drained to DEP-VSL-00001 following each batch transfer.
The fluid drained from the RLD21 transfer line is assumed to be represented by the propeities of Stream RLD21. as described in Section 4.2.3.1.2. Any subsequent flushing of the line with water will l:iaYe a diluting effect on the stream prope1ties. the extent of which depends on the rnlume of flush water used. The minimum sodium molarity and UDS for the flush sn·eam will be 01\l and O \\t0 o respectively. based on the prope11ies of demineralized water. Property ranges for Stream RLD2 l f will be established in the DFLA W PIBOD.
4.1.3.1.3 RLD41c - RLD41 Flush/Drain
Sn·eam RLD41 is a transfer stream from the Laboratory Area Sink Drain Collection Vessel (RLD-VSL-00164) to DEP-VSL-00002 during DFLAW operations.
The transfer line is drained to DEP-VSL-00001 following each batch transfer.
The fluid drained from the RLD4 l transfer line is assumed to be represented by the prope1ties of Stream RLD41. as described in Section 4.2.3.1.3. Any subsequent flushing of the line ·with water will haYe a diluting effect on the stream properties. the extent of which depends on the ,·ohune of flush water used. The minimum sodimu mola1ity and UDS for the flush stream will be 011 and O "1% respectiwly. based on the prope11ies of demineralized water. Property ranges for Stream RLD4lfwill be established in the DFLA W PIBOD.
DEP-VSL-00001: Sheet: 12 ofl6
CORROSION EVALUATION
24590-BOF-NlD-DEP-00001 Rev. I
24590-BOF-RPT-PR-15-001, Rev 0 Direct Feed LAW Process Corrosion Data
TI1e fluid drained from the RLD4 l transfer line is ass tuned to be represented by the propei1ies of Stream RLD41. as desc1ibed in Section 4.::?.3.1.3. Any subsequent flushing of the line with water will l111Ye a diluting effect on the stream properties. the extent of which depends on the Yohul}.e of flush water used. The minimum sodimn molarity and l}DS for the flush sn·eam will be OM and O wt% respectiYely. based on the prope11ies of demineralized water. Prope11Y ranges for Stream RLD4lfwill be established in the DFLA W PIBOD.
4.1.3.1.4 L VP2ld - L VP21 Flush/Dl'ain
L VP::?l is the collected caustic scrubber effluent in LVP-TK-00001 that will be transfened to DEP-VSL-00004A/B dtuing DFLA W operation.
The transfer line is drained to DEP-VSL-00001 once eYery 10 batch transfer'>.
TI1e fluid drained from the L VP::? I transfer line is assumed to be represented by the prope11ies of Stream L VP::? 1. as desc1ibed in Section -t 7.3. I.::?. Any subsequent flushing of the line with water will haYe a diluting effect on the stream properties. the extei1t of which depends on the rnhune of flush water used. TI1e minimum sodimn mola1ity and l.TDS for the flush -,n·eam will be OM and O \\1% re<,pectiYely. based on the prope11ies of demineralized water. Property ranges for Stream L VP::?ld will be established in the DFLi\. W PIBOD.
4.1.3.1.5 Ont·Oows fl'om Vl"ssl"ls DEP-VSL-00002, -00003A/B/C, -00004A/B, -0000SA/B
DEP-VSL-0000 I is the receipt wssel for o,·eitlo\\· streams from other process Yessels in the DEP system.
TI1e receipt ofYessel oYerflows is a non-routine process that is not included in the APPS model and is not discussed fiu1her in this docmnent.
4.1.3.1.6 DEP13h - Enporator Concl"ntratl" Flush/Drain
Stream DEP13 is the eYaporntor concentrate that j,, recycled from DEP-VSL-00003A·RC [SEE NOTE l] to LCP-VSL-0000);2 in LAW.
The transfer line is drained to DEP-VSL-0000 l following each batch transfer.
The fluid drained from the DEP 13 transfer line i,- assumed to be represented by the properties of Stream DEP13. as desc1ibed in Section 4.6.3.4.1. Any subsequent flushing of the line with water will haYe a diluting effect on the stream properties. the extent of which depends on the Yolume of flush water used. The minimum sodium molarity and UDS for the flush stream will be 0l\I and 0 wt% respectiYely. based on the prope11ies of demineralized water. Prope11ies for Stream DEP13h will be established in the LAW/El\ff PIBOD.
NOTE I - Typographical error found in the PCDS is corrected here. The error will be corrected in the PCDS at the next revision.
DEP-VSL-00001: Sheet: 13 of 16
24590-BOF-NlD-DEP-00001 Rev. I
CORROSION EVALUATION
24590-BOF-RPT-PR-15-001, Rev 0 Direct Feed LAW Process Corrosion Data
4.1.3.1.7 DEP-EVAP-00001 Flush/D1"3in
DEP-EVAP-00001 can be flushed and drained to DEP-VSL-00001.
The fluid drained from the DEP-EVAP-00001 will be bounded by the prope1ties of the eYaporator concentrate during steady state operation. Stream DEP05 represents the eYaporator concentrate stream. as described in Section 4.4.3.2.1.1. Any subsequent flushing of the line with water will ha,·e a diluting effect on the stream prope11ies. the extent of which depends on the ,·ohune of flush water used.
The receipt ofDEP-EVAP-00001 flush is a non-routine process that is not included in the APPS model and is not discussed fmther in this docmuent.
4.1.3.1.8 DEP-HX-00001 Flush/Drain
DEP-HX-00001 can be flushed and drained to DEP-VSL-00001.
Streams pass through DEP-HX-00001 before being retmned to the tank fanm,. Streams renuned to the tank fanns receiYe chemical additions for conosion mitigation per requirements of /CD 31 - Ime,face Collfrol Doc11111e11T For DFLA W EJJ711e11t Returm To Double-She/1 Tanh (24590-WTP-ICD-l\fG-0 1-031. Ref. 5.1.1(7). Table 4).
The receipt ofDEP-H..X-00001 flu'>h is a non-routine process that is not included in the APPS model and is not discussed ftuther in this document.
4.1.3.1.9 Sump Pump DischargP DEP-PMP-00032A/B, -00034A/B, -00038
Smnp pmnps DEP-P11P-00032AiB. -00034A!B. and -00038 transfer collected sump liquid from their respecti,·e stunps to DEP-VSL-00001.
The receipt of sump discharge is a non-routine process that is not included in the APPS model and is not discu<:,sed ftuther in this docmnent.
4.1.3.1.10 DEP-HOOD-00001 Flush/Dt•ain
Sample fome hood. DEP-HOOD-00001. can be flushed and drained to DEP-VSL-00001.
The DEP-HOOD-00001 is a non-routine process that is not included in the APPS model and is not discm,sed ftuther in this docmnent.
4.1.3.2 Store Liquid Effluents
DEP-VSL-00001 nonnally collects the LAW feed transfer flush water. as \Yell as graYity drains following the tran;fer of streams RLD21. RLD41. and L VP2 l . Non-routine eYents include the receipt of \'essel oYerflows. off-spec enporntor concentrate flush/drain. DEP-EVAP-00001 flushiclrain. DEP-HX-00001 flush/drain. smup pump discharges. and DEP-HOOD-00001 flush/drain.
4.1.3.3 l\lix Liquid Effluents
Mixing is accomplished in DEP-VSL-00001 using DEP-AGT-00001. Mixing helps resuspend solids in the wssel. and proYides a homogeneous mixnll'e piior to sampling and transfer from the \'essel.
DEP-VSL-00001: Sheet: 14 of 16
24590-BOF-NlD-DEP-00001 Rev.1
CORROSION EVALUATION
24590-BOF-RPT-PR-15-001, Rev 0 Direct Feed LAW Process Corrosion Data
4.1.3.4 Transfer Process Fluids
The following process streams taken from [SEE NOTE 2] PFD 24590-BOF-115-Vl 71-00011 (Ref. 5.1.3(1 )) and P&ID 24590-BOF-M6-DEP-00001002 (Ref. 5.1.3(6)) are outputs. from DEP-VSL-00001:
• DEP03 - Transfer fluid to DEP-VSL-00002
• Overflow to DEP-St.ThlP-00001
4.1.3.4.1 DEP03 - Transfer fluid to DEP-VSL-00002
Stream DEP03 is effluent from DEP-VSL-00001 that is transferred to the evaporator feed vessel. DEPVSL-00002.
Sodium :\Iolarin· Tue range for sodium molatity in stream DEP03 during nonnal operations will be established in the LAW/ErvIF PIBOD.
Temperature The minimum. nonnal. and maximum temperamres for streamDEP03 are 59°F. 67°F and 123°F respectively. based on the propenies ofDEP-VSL-00001 (24590-BOF-!vlVC-DEP-0001 l. Section 8. Ref. 5.1.4(7)).
Solids Concentration The range for solids conce1mation in stream DEP03 chuing nonnal operations will be established in the LA W/U,ff PIBOD.
Densin· The mininnun. nonnal. and maximmn density for stream DEP03 is 61.7 lbift3. 62.3 lbift3. and 68.6 lbift3
respectively. based on the propenies ofDEP-VSL-00001 (Ref. 5.1.4(7). Section 8).
I!!! The pH range for stream DEP03 dmi.ng nonnal operations will be established in the LA W;E1ff PIBOD.
4.1.3.4.2 On1flow to DEP-SUMP-00001
DEP-VSL-00001 oYerflows to the Low Point Drain Area Stm1p. DEP-SUMP-00001. Tue owrflow line has connections for flushing capability to facilitate cleaning. washing. decontaminating or unplugging the line. and a check Yalw to preYent the spread of contanlination to the DIW utility system (Ref. 5 .1.3( 6)).
TI1e DEP-VSL-00001 o,·erflow is a non-routine process that is not modeled in APPS. Therefore. the c;tream ic; not di.-,cm,c;ed any fmther in thic; document.
4.1.4 Process Modes
4.1.4.1 ~onnal Operations
Based on the assessment of streams frequently transfe1Ted in and out of nssel DEP-VSL-00001. the following processing modes are com,idered:
NOTE 2 - Typographical error found in the PCDS is corrected here. The error will be corrected in the PCDS at the next revision.
DEP-VSL-0000 I: Sheet: 15 of 16
24590-BOF-NlD-DEP-00001 Rev. I
CORROSION EVALUATION
24590-BOF-RPT-PR-15-001, Rev 0 Direct Feed LAW Process Corrosion Data
Inlet streams: • LCP0ih - LAW Feed Trauster Flusl1·Drni.t1 • RLD2lf-RLD21 Flush,Drain • RLD4 lc - RLD4 l Flush'Dram • LVP2ld-LVP21 Flush/Dram • DEP13h- DEP13 FlusltDram
Outlet streams:
• DEP03 - Transfer fluid to DEP-VSL-00002
4.1.4.2 Infrequent Operations
Based on the assessment of streams infrequently transfell'ed m and out of Yessel DEP-VSL-00001. the following operations are not considered:
Inlet streams: • ()yerflows from Yessels DEP-VSL-00002. -00003AiB/C. -00004AiB. -00005Ai'B • DEP-EVAP-00001 Flush1Drai.t1 • DEP-HX-00001 Flush'Dram • Sump Pump Discharge DEP-Pl\fP-00032A-'B. -00034A'B. -00038 • DEP-HOOD-00001 Flush,Tuain
Outlet streams:
• o,·erflow to DEP-SUMP-00001
4.1.5
4.1.5.1
Summary of PrnC'essing Conditions for DEP-VSL-00001
Normal Operations
The followmg table su1mnarizes the nomial processing modes for DEP-VSL-00001.
Tabll• 4-1- DEP-VSL-00001 ~ormal Opet·atious
Na Molarity (mol/L) Temperature(0 F) UDS(wt0/o)
Stream Number Low Nonnal Upper Low Nomial Upper Low Nomial
LCP07h 0 TBD TBD TBD TBD TBD 0 TBD
RLD2lf 0 TBD TBD TBD TBD TBD 0 TBD
RLD4Jc 0 TBD TBD TBD TBD TBD 0 TBD
LVP2ld 0 TBD TBD TBD TBD TBD 0 TBD
DEPBh 0 TBD TBD TBD TBD TBD 0 TBD
DEP03 0 TBD TBD 59 67 123 0 TBD
NOTE 1: Propertie, shom1 as TBD will be establi,hed by Yalnes in the DFLA W PIBOD. NOTE 2: Low ,·alnes of0 for sodium molarity and UDS are assigned ba,ed on the a,sociated flush/drnin stream being entirely composed of flush water.
DEP-VSL-00001: Sheet: 16 of 16
Upper
TBD
TBD
TBD
TBD
TBD
TBD