ML25290A049
| ML25290A049 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 10/13/2025 |
| From: | Talen Energy, Susquehanna |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML25290A004 | List:
|
| References | |
| PLA-8177 | |
| Download: ML25290A049 (1) | |
Text
SSES-FSAR Text Rev. 55 FSAR Rev. 65 6.1-1 6.1 ENGINEERED SAFETY FEATURE MATERIALS The materials used in the SSES engineered safety feature (ESF) systems have been selected on the basis of an engineering review and evaluation for compatibility with:
a)
The normal and accident service conditions of the ESF system b)
The normal and accident environmental conditions associated with the ESF system c)
The maximum expected normal and accident radiation levels to which the ESF will be subjected d)
Other materials to preclude material interactions that could potentially impair the operation of the ESF systems.
The materials selected for the ESF systems are expected to function satisfactorily in their intended service without adverse effects on the service, performance, or operation of any ESF.
6.1.1 METALLIC MATERIALS In general, metallic materials used in ESF systems comply with the material specifications of Section II of the ASME B&PV Code. Pressure retaining materials of the ESF systems comply with the quality requirements of their applicable quality group classification and ASME B&PV Code,Section III classification. Adherence to these requirements ensures materials of the highest quality for the ESF systems. Where it is not possible to adhere to the ASME material specifications, metallic materials have been selected in compliance with other nationally recognized standards, eg, ASTM, where practicable, or chosen in compliance with current industry practice.
6.1.1.1 Materials Selection and Fabrication Metallic materials in ESF systems have been designed for a service life of 40 years, with due consideration of the effects of the service conditions upon the properties of the material, as required by Section III of the ASME B&PV Code, Articles NB-2160, NC-2160, and ND-2160. Since the affected systems must perform for the period of extended operation, aging of equipment is managed to ensure it continues to perform its intended function.
Pressure retaining components have been designed with appropriate corrosion allowances, considering the service conditions to which the material will be applied in
SSES-FSAR Text Rev. 55 FSAR Rev. 65 6.1-2 accordance with the general requirements of Section III of the ASME B&PV Code, Articles NB-3120, NC-3120, and ND-3120.
The metallic materials of the ESF systems have been evaluated for their compatibility with core and containment spray solutions. No radiolytic or pyrolytic decomposition of ESF material will occur during accident conditions, and the integrity of the containment or function of any other ESF will not be affected by the action of core or containment spray solutions. Core and containment sprays use high purity water that meets the limits of Table 3.11-7.
Material specifications for the principle pressure retaining ferritic, austenitic, and nonferrous metals in each ESF system are listed in Tables 6.1-1a and 6.1-1b. Materials that would be exposed to the core cooling water and containment sprays in the event of a LOCA are identified in these tables. Sensitization of austenitic stainless steel is prevented by the following actions:
a)
Design specifications call for ASME material which is to be supplied in the solution annealed unsensitized condition.
b)
Design specifications prohibit the use of materials that have been exposed to sensitizing temperatures in the range of 800 to 1500°F unless subsequently solution annealed and water quenched.
In addition, design specifications for austenitic stainless steel components require that the material be cleaned using halide free cleaning solutions and that special care be exercised in fabrication, shipment, storage, and construction to avoid contaminants.
Cold-worked austenitic stainless steels with yield strengths greater than 90,000 psi are not used in ESF systems. Therefore, there are no compatibility problems with core cooling water or the containment sprays.
Reflective metallic insulation, Min-K insulation, phenolic foam insulation and small amounts of fibrous insulation are used inside the primary containment. Metallic reflective thermal insulation, phenolic foam insulation and fiberglass wool thermal insulation (outside 7 pipe diameters from postulated HELB locations) are used inside the primary containment. To avoid the possibility of chloride induced stress corrosion cracking in austenitic stainless steel, design specifications on the nonmetallic insulation require that it conform to the requirements of Regulatory Guide 1.36, (2/73). This includes not only non-metallic insulation in direct contact with austenitic stainless steel, but also situations where leachate from non-metallic insulation components could contaminate austenitic stainless steel components.
Regulatory Guide 1.31, is complied with to the extent specified in Section 3.13, to avoid fissuring in austenitic stainless steel welds that are part of the engineered safety features.
SSES-FSAR Text Rev. 55 FSAR Rev. 65 6.1-3 6.1.1.1.1 NSSS Material Specifications Table 5.2-4 lists the principal pressure retaining materials and the appropriate material specifications for the reactor coolant pressure boundary components.
6.1.1.1.2 Compatibility of NSSS Construction Materials with Core Cooling Water and Containment Sprays Subsection 5.2.3.2.3 discusses compatibility of the reactor coolant with materials of construction exposed to the reactor coolant. These same materials of construction are found in the engineered safety feature components.
6.1.1.1.3 NSSS Controls for Austenitic Stainless Steel a)
Control of the use of Sensitized Stainless Steel.
Controls to avoid severe sensitization are discussed in Subsection 5.2.3.4.1.1.
b)
Process Controls to Minimize Exposure to Contaminants.
Process controls for austenitic stainless steel are discussed in Subsection 5.2.3.4.1.2.
c)
Use of Cold Worked Austentic Stainless Steel.
Austenitic stainless steel with a yield strength greater than 90,000 psi was not used in ESF systems.
d)
Avoidance of Hot Cracking of Stainless Steel.
Process controls to avoid hot cracking are discussed in Subsection 5.2.3.4.2.1.
6.1.1.2 Composition, Compatibility, and Stability of Containment and Core Spray Coolants The HPCI system is supplied from either the condensate storage tank or the suppression pool. The core spray and LPCI are supplied from the suppression pool only. Water in both of these sources is high purity water that meets the limits of Table 3.11-7. No corrosion inhibitors or other additives are present in either source.
The containment spray uses the suppression pool as its source of supply. No radiolytic or pyrolytic decomposition of ESF materials are induced by the containment sprays. The
SSES-FSAR Text Rev. 55 FSAR Rev. 65 6.1-4 containment sprays will not cause stress-corrosion cracking in austenitic stainless steel during a LOCA.
6.1.2 ORGANIC MATERIALS Protective Coatings, both organic and inorganic, are used on items in containment as stated in Tables 6.1-1b and 6.1-2. All of these materials that are used as coatings on or are part of equipment have been evaluated with regard to the expected service conditions and have been found to have no potential for adversely affecting service, performance, or operation. No radiolytic or pyrolytic decomposition or interaction with other ESF materials will result from the use of these coatings.
Much of the equipment in containment is coated with zinc, either as galvanizing or by a paint comprising inorganic zinc compounds. The total amount of zinc and estimated total area of zinc coating is shown in Table 6.2-13. The remainder is primarily red oxide primer or epoxy.
Qualified coatings are expected to remain intact following a DBA. Unqualified coatings are assumed to fail and produce post-LOCA debris in the form of particulate or flakes.
The effect of the paint debris on ECCS pump suction strainer blockage has been evaluated to have no safety impact on suction strainer operation.
For Core Spray and RHR, conservative amounts of paint are assumed to be transported to the suppression pool immediately after LOCA, despite evidence that coating failure will not occur until between 6 and 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> into the postulated event. This paint, excluding a portion of flakes that will settle to the bottom of the suppression pool, is assumed to be filtered by the strainers and is accounted for in the calculation of strainer pressure drop as described in Sections 6.3.2.2.3 and 6.3.2.2.4.
For HPCI (and RCIC), the events for which HPCI (and RCIC) will operate are not expected to produce significant coating debris. Furthermore, such events will not result in flows from drywell to wetwell that will be high enough to transport significant coating debris to the suppression pool.
The current quantities of qualified and unqualified paint in the Unit 1 and 2 containments, as inventoried in 1994, are provided in Table 6.1-3.
Most of the NSSS equipment was ordered prior to issuance of Regulatory Guide 1.54 so the requirements of that guide were not imposed. However, the coatings were among the first to be qualified under ANSI N101.2 for DBA, radiation, etc., in nuclear applications. Of the paint used on NSSS equipment within containment, less than 12 Kg was not qualified to ANSI N101.2, not including the paint tightly covered with insulation.
SSES-FSAR Text Rev. 55 FSAR Rev. 65 6.1-5 The coating on the drywell liner and structural steel within the drywell was qualified in accordance with ANSI N101.2 and applied in accordance with Regulatory Guide 1.54.
In addition both containments were constructed with significant amounts (52,000 sq. ft. -
Unit 1 and 46,100 sq. ft. - Unit 2) of unqualified inorganic zinc paint applied to the pipe supports and hangers, non-NSSS equipment, and ductwork. Approximately, 42,100 sq. ft. in each unit was DBA qualifiable paint, however, it was applied without the proper documentation and in accordance with a non-Q procedure. Another 4,000 sq. ft.
in each unit was applied to galvanized duct work and is not DBA qualifiable. In addition, Unit 1 contains 5,900 sq. ft. of unqualified inorganic zinc applied to surfaces in the suppression pool.
In order to reduce the quantity of non-Q paint, an in-situ DBA test was conducted on representative samples of the 42,100 sq. ft. of qualifiable paint in each drywell. The testing resulted in an approximate 90% reduction of non-Q, qualifiable inorganic zinc.
The Unit 1 test description and results are provided in Advanced Corrosion Engineering report, LOCA Simulation Testing of Specimens Representing Drywell Hanger Steel Painted with Carbo-Zinc 11 Unit 1 SSES, dated 11/30/93. The Unit 2 test description and results are provided in Advanced Corrosion Engineering report, LOCA simulation Testing of Specimens Representing Drywell Hanger Steel Painted with Inorganic Zinc Unit 2 SSES, dated 9/5/94.
The remaining 10,600 sq. ft. of the non-Q inorganic zinc in Unit 1 and the 6,150 sq. ft. in Unit 2, when subjected to LOCA conditions, is assumed to fail as particulate.
The 4,000 sq. ft. of non-Q inorganic zinc applied to the galvanized ductwork in each unit is assumed to fail in flake form following a LOCA.
The second type of unqualified coating found in the Susquehanna containments is red oxide primer. There is approximately 3000 sq. ft. of it in each wetwell and 3000 sq. ft.
in each drywell. The red oxide applied to the wetwell surfaces is likely to remain intact following a DBA LOCA. Testing has shown that 240°F temperature is required to achieve coating failure. At Susquehanna, wetwell vapor phase temperatures only reach around 210°F following a LOCA.
The 3000 sq. ft. applied to drywell piping is assumed to fail in flake form following a LOCA.
In addition to the unqualified paint identified above, small quantities of inorganic zinc and/or epoxy were added to the containments in the form of touch-ups and modifications of systems and components. Walkdowns and inspections of both containments has determined the touch-ups and additions to be minimal (see Table 6.1-3).
6.1.3 POST ACCIDENT CHEMISTRY Not applicable to BWR plants.
SSES - FSAR Table Rev. 57 TABLE 6.1-1a NSSS SUPPLIED ENGINEERED SAFETY FEATURES COMPONENT MATERIALS FSAR Rev. 60 Page 1 of 2 COMPONENT FORM MATERIAL SPECIFICATION (ASTM/ASME)
RHR Heat Exchanger Shell, Head, and Channel Tube Sheet Tubes Flanges and Nozzles Bolts Nuts Plate Forging Tube Forging Bar Bar Carbon Steel Carbon Steel Copper-Nickel Carbon Steel Alloy Steel Alloy Steel A516 Gr. 70 A350 Gr. LF2 SB395 Alloy 715 A105 Gr. 2 and A350 Gr. LF2 A193 Gr. B7 A194 Gr. 7 RHR and CS Pumps Shell Plates and Dished Head Shell Aligning Ring Shell Ribs Discharge Head Flanges Discharge Head Elbow Discharge Head Plates Discharge Head Bar Discharge Head Pipe Cap Screws Nuts Plate Forging Plate Plate Forging Piping Fitting Plate Piping Fitting Pipe, Plate Bar Bar Carbon Steel Carbon Steel Carbon Steel Carbon Steel Carbon Steel Carbon Steel Carbon Steel Carbon Steel Carbon Steel Alloy Steel Alloy Steel A516 Gr. 70 A350 Gr. LF2 A516 Gr. 70 A516 Gr. 70 A350 Gr. LF2 A234 Gr. WPB A516 Gr. 70 A350 Gr. LF2 A333 Gr. 6, A516 Gr. 70 A193 Gr. B7 A194 Gr. 7 HPCI Main Pump and Booster Pump Case, Top and Bottom Seal Flange Balance Line (Main Pump Only)
Welding Bosses (Vents and Drains)
Studs, Case and Seal Flange Nuts, Case and Seal Flange Interconnecting Piping Interconnecting Piping Fittings Interconnecting Piping Bolts and Nuts Castings Forging Piping Forging Bar Bar Piping Forging Bar Carbon Steel Alloy Steel Carbon Steel Carbon Steel Alloy Steel Alloy Steel Carbon Steel Carbon Steel Alloy Steel A216 Gr. WCB A182 Gr. F6 A106 Gr. B A181 Gr. II A193 Gr. B7, A193 Gr. B6 A194 Gr. 7 A106 Gr. B A234 Gr. WPB, A181 Gr. II A193 Gr. B7, A194 Gr. 7 Standby Liquid Control Pumps Fluid Cylinder Cylinder Head Cover, Discharge Valve Cover, and Stuffing Box Flange Plate Cylinder Head Extension, Discharge Valve Stop, and Stuffing Box Stuffing Box Gland Plunger Suction Flange Discharge Flange Pipe Nipples - Suction and Discharge Flange Nipples Studs Nuts Forging Plate Shapes Bar Bar Forging Pipe Bar Bar Stainless Steel Carbon Steel Stainless Steel 17-4PH (H1075) 17-4PH (H1075)
Stainless Steel Stainless Steel Stainless Steel Alloy Steel Alloy Steel A182 Gr. F304 A285 Gr. C A479 Type 304 A461 Gr. 630 A461 Gr. 630 A182 Gr.F304L A182 Gr. F304L A312 Gr. TP304L A193 Gr. B7 A194 Gr. 7 Standby Liquid Control Explosive Valves Body, Inlet Fittings and Trigger Body Flange Cap Screws Shapes Forging Bar Stainless Steel Stainless Steel Stainless Steel A479 Type 304 A182 Gr. F304 A193 Gr. B8
SSES - FSAR Table Rev. 57 TABLE 6.1-1a NSSS SUPPLIED ENGINEERED SAFETY FEATURES COMPONENT MATERIALS FSAR Rev. 60 Page 2 of 2 COMPONENT FORM MATERIAL SPECIFICATION (ASTM/ASME)
Standby Liquid Storage Tank TankShell, Top Plate, Bottom Plate, Bottom Ring Nozzles Fittings Pipe Plate Welds Plate Forging Plate Plate N/A Stainless Steel Stainless Steel Stainless Steel Stainless Steel Stainless Steel A240 Type 304 A182 Gr. F304, F316 A312 Type 304 A240 Type 316L SFA 5.4, SFA 5.9 Main Steam Isolation Valves Body Bonnet and Poppet Stem Studs Nuts Nuts, Superbolt Nuts Superbolt Nut Jack Bolt Pipe Drain Boss Casting Forging Bar Bar Bar Smls Pipe Forging Carbon Steel Carbon Steel Stainless Steel 17-4PH Alloy Steel Carbon Steel Alloy Steel Alloy Steel Carbon Steel Carbon Steel A216 Gr. WCB A105 Gr. 2 A276 Type 410 SA564 Type 630 (H1100)
A193 Gr. B7, SA540 Gr.B23 Class 5 A194 Gr. 2H SA194 Gr. 7 SA540-B21 Class 1 A106 Gr. B A105 Gr. 2 Main Steam Safety Relief Valves Body and Bonnet Disc Holder Disc Insert Spindle Point Spindle Ball Nozzle Spring Spring Washers (Top & Bottom)
Adjusting Bolt Adjusting Bolt Button Thrust Bearing Adapter Studs Nuts Superbolt Nut Superbolt Nut Jack Bolt Forging Forging Shape Bar Shape Forging Bar Forging Bar Bar Bar Bar Bar Carbon Steel Inconel 718 Alloy Steel 17-4PH (H1075) 17-4PH(H1150)
Stellite Stainless Steel Stainless Steel Alloy Steel Carbon Steel Alloy Steel Alloy Steel Alloy Steel Alloy Steel Carbon Steel Alloy Steel Alloy Steel A105 Gr. 2 ASM 5662B SA637 Gr. 718 A564 Type 630 A564 Type 630 Stellite #6 A276 Type 440C A182 F316 A304-66 Gr. 4161 H A105 Gr. 2 A193 Gr. B6 A193 Gr. B6 A193 Gr. B6 A193 Gr. B7 A194 Gr. 2H SA194 Gr. 7 SA540-B21 Class 1 Control Rod Velocity Limiter (Section 4.2)
Main Steam Flow Restrictor Upstream part Downstream part Casting Casting Stainless Steel Carbon Steel A351 Gr. CF8 A216 Gr. WCB Control Rod Drive Housing Support System (1)
Structural Support Steel (See Section 4.5.3)
Structural Steel Carbon Steel ATSM A36 (1) Component/materials that would be exposed to core cooling water and containment sprays in the event of a LOCA.
SSES-FSAR Table Rev. 56 Table 6.1-1b ENGINEERING SAFETY FEATURES MATERIALS FSAR Rev. 68 Page 1 of 5 Item Commercial Name Chemical Composition (Metallic)
Chemical (Organic) 1 Primary Containment (15)(17) 2 Secondary Containment (See Reactor Building Recirculation System and Standby Gas Treatment System) 3 Containment Isolation System Containment Isolation Valves (See-Table 6.1-1a) 4 Containment Combustible Gas Control a)
Primary Containment Ventilation System (only safety-related drywell unit cooler fans, CRD area ventilation fans and associated safety-related ductwork)
(11)(12)(17) b)
Containment Atmosphere Control (2)(17) 5 Containment Heat Removal a)
Containment Spray Cooling (CSC) Mode of RHR System (Equipment See Table 6.1-1a)
(1)(17) b)
Suppression Pool Cooling (SPC) Mode of RHR System (Equipment See Table 6.1-1a)
(1)(17) 6 HPCI (Equipment See Table 6.1-1a)
(1)
(3)(5)(6) 7 Core Spray (Equipment See Table 6.1-1a)
(1)(2)(17)
(3)(5)(6) 8 LPCI (Equipment See Table 6.1-1a)
(1)(2)(17)
(3)(5) 9 Auto Depressurization System(MSRV See Table 6.1-1a)
(1)(17)
(3)(6) 10 Standby Gas Treatment System (10)(12)(13)(14) 11 Reactor Building Recirculation System (9)(13)(12) 12 Habitability System Control Structure HVAC systems which service the Habitability envelope, including Control Room HVAC, Control Strucure HVAC, Computer HVAC, CSEOASS, Battery Room Exhaust, Kitchen and Toilet Exhaust (8)(10)(12)(13) 13 Main Steam Isolation Valve Leakage Isolated Condenser Treatment Method (ICTM)
(1)(17)
SSES-FSAR Table Rev. 56 Table 6.1-1b ENGINEERING SAFETY FEATURES MATERIALS FSAR Rev. 68 Page 2 of 5 Size - 26"t Pipe:
SA-155 KC-70 Class I welded Fittings:
SA-234 WPBW Flanges:
SA-181 II SA-105 Valves:
SA-105 SA-216 WCB Nuts:
SA-194 Gr 2H JA-194 Gr 7 Bolts:
SA-193 Gr B7 Size - 24"d Pipe:
SA-106 Gr B Seamless Fittings:
SA-234 WPB SA-105 (2 and smaller)
SA-181 II SA-105 Valves:
SA-105 SA-216 WCB Nuts:
SA-194 Gr 2H SA-194 Gr 7 Bolts:
SA-193 Gr B7
SSES-FSAR Table Rev. 56 Table 6.1-1b ENGINEERING SAFETY FEATURES MATERIALS FSAR Rev. 68 Page 3 of 5 Size - All Pipe:
SA-358 Gr 304 Class 1 Welded SA-358 Gr 304 Class 1 Welded (0.030 Carbon Max)
SA-376 TP 304 SA-312 TP 304 SA-312 TP 304L (0.030 Carbon Max)
Fittings:
SA-403 WP304W SA-403 304W (0.030 Carbon Max)
SA-403 304 (0.030 Carbon Max)
SA-403 304L (0.030 Carbon Max)
SA-182 Gr F3046 (0.030 Carbon Max)
SA-182 Gr F316 SA-182 Gr F316 (0.030 Carbon Max)
SA-182 Gr F316L (0.030 Carbon Max)
Valves:
SA-351 Gr CF8M CF8 SA-351 Gr.
SA-182 F316 (2" & smaller)
Nuts:
SA-194 Gr 2H SA-194Gr 7 Bolts:
SA-193 Gr B7 (1)
Carbon steel systems per ASME II, Part A, as follows:
(2)
Stainless steel systems per ASME II, Part A, as follows:
(Refer to Figure 6.1-1)
(3)
Insulation materials are as listed below:
a)
Fiberglass wool (minimal use inside containment) b)
Stainless steel all metal reflective c)
Needled glass fiber encapsulated in aluminum bonded fiberglass cloth fabric (outside containment only) d)
Phenolic foam insulation (RBCW piping only) e)
Min-k insulation (restricted to pipe whip restraints when used in containment)
(4)
Unless specified otherwise, gaskets are typically of the spiral-wound metalic type with nonmetalic filler (per ASME B16.5-1996, Annex E, Group Number 1.
SSES-FSAR Table Rev. 56 Table 6.1-1b ENGINEERING SAFETY FEATURES MATERIALS FSAR Rev. 68 Page 4 of 5 (5)
Valve gland packings typically are graphite packings meeting PP&L Technical Specification M-1434.
(6)
Uninsulated carbon steel piping inside the primary containment is coated as follows:
a)
Drywell
- 1)
MSRV discharge lines -
part inorganic zinc (where not insulated) part red oxide part uncoated
- 2)
Water lines to unit coolers - red oxide
- 3)
Drywell spray header -
red oxide b)
Wetwell
- 1)
MSRV discharge lines -
uncoated
- 2)
Wetwell spray header -
red oxide (7)
Intentionally left blank (8)
Fans (Centrifugal)
SA-515 GR-55, AISI-C-1045, A-569, A-366, A-568, ASME-SA285 GrC (9)
Fans (Vane Axial)
Housing ASTM A283, ASTM A36-75 Hub and Blades Cast Aluminum A356 (ASTM B108), A365-40E(ASTM B26)
(10)
Filter Housings A-36, A-53B, A-105, A-240TP304, 554 MT 304, A-276TP304, A-283, A-569 (11)
Containment Coolers Fans (Safety Related)
Fan A-283, AISI-420, Cast Iron, 17-4Ph Housing -
A-570D, A123-73, Unit 2 housing painted with Carbozinc II in lieu of galvanizing, insulation ultralite (glass fibers)
(12)
Ductwork Construction (Or Engineer Approved Equal)
Material for ductwork - ASTM A446 Grade B, ASTM 527 or ASTM 526 Structural steel shapes, plates, and bars - ASTM A36 with galvanizing per ASTM A123-73 Bolts, nuts, and washers - ASTM A307 with galvanizing per ASTM A153 or zinc plated per ASTM B633 or A164 Type RS (discontinued)
Structural tubing - (duct supports) ASTM A501 or A500 Grade B Cadmium plating of bolts, nuts, and washers - ASTM A165 type TS (13)
Damper Construction Carbon Steel Sheet Metal for damper - ASTM, A526 or A527 with A525G-90 coating designation
SSES-FSAR Table Rev. 56 Table 6.1-1b ENGINEERING SAFETY FEATURES MATERIALS FSAR Rev. 68 Page 5 of 5 Steel rod, bar, and shaft - ASTM A108, A29, AISI 1008/1018, AISI M1020 with A123 coating designation or Cadmium coating per ASTM A165 Type OS Stainless Steel Sheet Metal for Damper - ASTM A167 Type 304 Stainless Steel rod, bar and shaft - ASTM A276 TP304, A582 TP303 Carbon Steel Structural Shapes - A36 with G90 coating (14)
SGTS Centrifugal Fans Housing ASTM A283, ASTM A36 Hub and Blades ASTM A48, ASTM A242 (15)
Primary Containment Liner Plate ASTM A285 Grade A, ASME SA516 Grade 60 or 70 Penetration assemblies (electrical and piping), locks, hatches, and other materials approved for use, ASME SA516, Grade 60 or 70 normalized, ASME SA537, Grade B, SA193 B7, SA194 Gr 7, SA350 LF2, SA182 F304, SA 182 F316, SA541 Class 1, SA234, WPB, SA479 TP304, SA105 Gr 11, SA333 Gr 1 or 6 (16)
Primary Containment Isolation Valves SA216 Gr WCB SA105 Gr 11 SA182 Gr F304L, F316, F316L SA351 CF3, CF3M, CF8, CF8M SA352 Grade LCB SA515 Gr 70 SA240 Gr 304, 316 SA516 Gr 55 SA181 Gr 11 SA182 Gr F22 (17)
Components/materials that would be exposed to core cooling water and containment sprays in the event of a LOCA.
SSES-FSAR Rev. 54, 10/99 Page 1 of 3 Table 6.1-2 CONTAINMENT COMPONENTS - COATING SCHEDULE Category Item/Type/ Description Coated Uncoated Generic Type (Notes 1, 2)
Film Thickness (Mils)
General Comments Q
Coating Mfr.
Std.
Coat Stls Galv.
Carbon Steel Liner Plate Containment - Dome Drywell - Walls Drywell - Floor Suppression Pool-Walls Suppression Pool-Floor Drywell Wainscot - Wall X
X X
X X
X Inorganic zinc Inorganic zinc or Inorganic zinc w/epoxy topcoat Inorganic zinc w/
epoxy topcoat Inorganic zinc Inorganic zinc Inorganic zinc w/
epoxy topcoat 2-4 or 5-10 2-4 10-16 4-5 4-5 7-11 Coating repairs may be done with two coats of phenolic epoxy to a thickness of 8-12 mils on the dome and 10-16 mils on the drywell walls, or one coat of epoxy at 5-10 mils, (PP&L Spec C1051).
Coating repairs may be done with two coats of epoxy to a thickness of 8-12 mils, or one coat at 5-10 mils, (PP&L Spec C1051).
SSES-FSAR Rev. 54, 10/99 Page 2 of 3 Table 6.1-2 CONTAINMENT COMPONENTS - COATING SCHEDULE Category Item/Type/ Description Coated Uncoated Generic Type (Notes 1, 2)
Film Thickness (Mils)
General Comments Q
Coating Mfr.
Std.
Coat Stls Galv.
Structural Steel Diaphragm Support Columns in Suppression Pool Heavy Support Steel Miscellaneous Steel Handrails & Gratings Exposed Surface of steel inserts Hatches (Equipment &
Personnel)
X X
X X
X or X
X Inorganic zinc Inorganic zinc or epoxy Inorganic zinc or epoxy Inorganic zinc or epoxy Inorganic zinc 4-5 2-4 or 5-10 2-4 or 5-10 2-4 or 5-10 2-4 in drywell 4-5 in Suppression Pool Carbon steel
- Pipe, Hangers and Valves Insulated Piping Uninsulated Piping Pipe Hangers Valves & Valves Operators X or X
X X
X or or X
X Red oxide/ Mill Varnish Inorganic zinc or Red oxide Inorganic zinc or epoxy
> 2 2-4 2-4 or 5-10 Coating on insulated pipe is not accessible to sump Surfaces exposed in Rad Zones IV &
require protection &
shall have specified surface preparation and inorganic zinc coating in the shop
SSES-FSAR Rev. 54, 10/99 Page 3 of 3 Table 6.1-2 CONTAINMENT COMPONENTS - COATING SCHEDULE Category Item/Type/ Description Coated Uncoated Generic Type (Notes 1, 2)
Film Thickness (Mils)
General Comments Q
Coating Mfr.
Std.
Coat Stls Galv.
Equipment Pumps Fans & Fan Housings (Carbon Steel)
HVAC Ducts Hydrogen Recombiners Containment Coolers Heat Exchangers X
X X
X X
or or X
X X
X Inorganic zinc Inorganic zinc Inorganic zinc 2-4 2-4 2-4 Applied to surfaces exposed to spray or insulated Electrical Motors Connection Boxes Control Panels, Instrument Panels Raceways, Cable Trays X or X
X or X
X X
Inorganic zinc Inorganic zinc Alkyd, urethane 2-4 2-4 1-2 Large items with non-Q Coating - Recoat in field.
Concrete RPV Concrete Pedestal X
Epoxy Surfacer & Topcoat 1/8 surfacer & 4-20 mil topcoat See Note (2)
(1) Generic coating systems acceptable for containment use have been selected from suppliers who are prequalified to project standards and test criteria. Systems other than those listed are acceptable for specific units based on analysis of requirements.
(2) Concrete coatings shall be limited to minimum area required for decontamination purposes.
(3) Exposed areas of coatings are listed in Table 6.2-13.
SSES-FSAR Rev. 54, 10/99 Page 1 of 2 Table 6.1-3 Inventory of Qualified and Unqualified Containment Coatings Unit 1 Drywell Ft2
- 1. Qualified Coatings
- a. A-292 Inorganic Zinc Epoxy topcoat
- b. C-63 Inorganic Zinc
- c. M-27 & M-204 Epoxy Topcoat
- d. A-50 Epoxy Concrete Surfacer
- e. G-4 Inorganic Zinc with In-situ DBA Qualification Total 16,200 16,900 15,900 7,400 4,000 37,4003 97,800
- 2. Unqualified Coatings
- a. G-4 Inorganic Zinc
- b. G-4 Red Oxide
- c. Inorganic Zinc Touch-up of Galvanized Ductwork Total 4,7003 3,0003 4,0003 11,700 Unit 1 Suppression Pool
- 1. Qualified Coatings
- a. A-57 Inorganic Zinc Total 34,900 34,900
- 2. Unqualified
- a. G-4 Inorganic Zinc
- b. G-4 Red Oxide Total Total Qualified - Unit 1 Total Unqualified - Unit 1 5,900 3,0003 8,900 132,700 20,600
SSES-FSAR Rev. 54, 10/99 Page 2 of 2 Table 6.1-3 Inventory of Qualified and Unqualified Containment Coatings Unit 2 Drywell Ft2
- 1. Qualified Coatings
- a. A-29 Inorganic Zinc Epoxy topcoat
- b. C-63 Inorganic Zinc
- c. M-27 & M-204 Epoxy Topcoat
- d. A-50 Epoxy Concrete Surfacer
- e. G-4 Inorganic Zinc with In-situ DBA Qualification Total 16,200 16,900 15,900 7,400 4,000 35,9503 96,350
- 2. Unqualified
- a. G-4 Inorganic Zinc
- b. G-4 Red Oxide
- c. Inorganic Zinc Touch-up of Galvanized Ductwork Total 6,150 3,0003 4,0003 13,150 Unit 2 Suppression Pool
- 1. Qualified Coatings
- a. A-57 Inorganic Zinc Total 34,900 34,900
- 2. Unqualified
- a. G-4 Red Oxide Total Total Qualified - Unit 2 Total Unqualified - Unit 2 3,0003 3,000 131,250 16,150 1
In addition to the quantities of qualified coatings, listed below, small quantities of qualified epoxy paint has been added via touchups and modifications.
2 The specification numbers listed adjacent to each type of coating (i.e., G-4, A-57, etc.)
indicate the Bechtel specification used to apply the coatings.
3 The reported quantities indicate adjustments from the original Bechtel estimates and those previously reported in the FSAR. These numbers are based on walkdowns of the drywell and suppression pool and the results of the in-situ LOCA Simulation Testing of inorganic zinc.