ML17251A895
| ML17251A895 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 08/31/2017 |
| From: | Mark D. Sartain Virginia Electric & Power Co (VEPCO) |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML17251A864 | List: |
| References | |
| 17-296 | |
| Download: ML17251A895 (73) | |
Text
PROPRIETARY INFORMATION-WITHHOLD UNDER 10 CFR 2.390 VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 August 31, 2017 10 CFR 50.55a Serial No.:
17-296 United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555 NRA/GDM:
Docket Nos.:
License Nos.:
R2 50-280/281 DPR-32/37 VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION UNITS 1AND2 PROPOSED ALTERNATIVE TO ASME SECTION XI REQUIREMENTS FOR REPAIR/REPLACEMENT OF BURIED CIRCULATING AND SERVICE WATER CLASS 3 PIPING WITH CARBON FIBER REINFORCED POLYMER RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION By letter dated December 14, 2016 (Serial No.16-448), Virginia Electric and Power Company (Dominion Energy Virginia) submitted a proposed inservice inspection (ISi) alternative request in accordance with 10 CFR 50.55a(z)(1) to allow the use of a Carbon Fiber Reinforced Polymer (CFRP) system for the internal repair of buried Circulating Water (CW) and Service Water (SW) systems' piping at Surry Power Station (Surry)
Units 1 and 2.
Dominion Energy Virginia provided a supplement to the alternative request by letter dated February 23, 2017 (Serial No.17-061).
By letter dated July 3, 2017, the NRC requested additional information to facilitate its review of the proposed alternative request. The requested information is provided in.
The information provided in Enclosure 1 in the response to the NRC request for additional information was prepared by Structural Group, Inc., and Simpson Gumpertz &
Heger, Inc., and includes information proprietary to these two companies. Therefore, this information is supported by affidavits, signed by Structural Group, Inc., and Simpson Gumpertz & Heger, Inc., the owners of the information. The affidavits set forth the bases by which the information may be withheld from public disclosure by the Commission and addresses with specificity the considerations listed in paragraph (b)(4) of 10 CFR 2.390 of the Commission's regulations.
Accordingly, it is respectfully requested that the information, which is proprietary to Structural Group, Inc., and Simpson Gumpertz & Heger, Inc., be withheld from public disclosure in accordance with 10 CFR 2.390 of the Commission's regulations. The affidavits are included in Structural Group, Inc., and Simpson Gumpertz & Heger, Inc. letters to the NRC entitled, "Application for Withholding Proprietary Information from Public Disclosure, and "Withholding of Certain Proprietary Information Pursuant to 10 CFR 2.390, dated August 24, 2017 and August 16, 2017, respectively. The Structural Group, Inc., and Simpson Gumpertz & Heger, Inc., authorization letters are provided in Enclosure 3. In conformance to the requirements of 10 CFR 2.390 concerning the protection of ENCLOSURE 1 CONTAINS PROPRIETARY INFORMATION THAT IS BEING WITHHELD FROM PUBLIC DISCLOSURE UNDER 10 CFR 2.390. UPON SEPARATION OF ENCLOSURE 1, THIS LETTER IS DECONTROLLED.
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Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request Page 2 of 3 proprietary information, the basis for the withholding of the proprietary information is indicated directly before the information to be withheld in Enclosure 1. Attachments B, C, D and F to Enclosure 1 are considered to be proprietary in their entirety and have been marked in the manner authorized by 10 CFR 2.390(b )(1 )(i)(A). A non-proprietary version of the RAI response is provided in Enclosure 2.
If you have any questions or require additional information, please contact Mr. Gary D. Miller at (804) 273-2771.
Sincerely,
~-
Mark D. Sartain Vice President - Nuclear Engineering and Fleet Support Commitments contained in this correspondence: None Enclosures
- 1. Response to Request for Additional Information, Alternative Request to Use Carbon Fiber Reinforced Polymer System for the Internal Repair of Buried Circulating and Service Water Piping [PROPRIETARY]
- 2. Response to Request for Additional Information, Alternative Request to Use Carbon Fiber Reinforced Polymer System for the Internal Repair of Buried Circulating and Service Water Piping [NON-PROPRIETARY]
- 3. Applications for Withholding Proprietary Information from Public Disclosure
Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request Page 3 of 3 cc:
U.S. Nuclear Reg"ulatory Commission - Region II Marquis One Tower 245 Peachtree Center Ave., NE Suite 1200 Atlanta, Georgia 30303~ 1257 NRC Senior Resident Inspector Surry Power Station Ms. K. R. Cotton Gross NRC Project Manager-Surry U.S. Nuclear Regulatory Commission One White Flint North Mail Stop 08 G9A 11555 Rockville Pike Rockville, Maryland 20852 Mr. J. R. Hall NRC Senior Project Manager-North Anna U. S. Nuclear Regulatory Commission One White Flint North Mail Stop 08 B1A 11555 Rockville Pike Rockville, Maryland 20852
NON-PROPRIETARY Serial No. 17-'296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 1 of 45 Response to Request for Additional Information Alternative Request to Use Carbon Fiber Reinforced Polymer System for the Internal Repair of Buried Circulating and Service Water Piping Surry Power Station Units 1 and 2 The information contained within brackets in Enclosure 1 is requested to be withheld as indicated because:
~ It reveals the distinguishing aspects of a process (or component, structure, tool, method, etc.) whose use by any of the submitter's competitors, without a license from the submitter, would constitute a competitive economic disadvantage to the submitter.
~ Use by a competitor of the information requested to be withheld would reduce the competitor's expenditure of resources, or improve its competitive position, in the design, manufacture, shipment, installation, assurance of quality, or licensing of a similar product.
~ The information requested to be withheld reveals commercial strategies of the submitter or customers or suppliers.
~ It reveals aspects of privately funded development plans or programs of commercial value to the submitter or owner of the information.
By letter dated December 14, 2016 (Serial No.16-448), Virginia Electric and Power Company (Dominion Energy Virginia) submitted a proposed inservice inspection (ISi) alternative request in accordance with 10 CFR 50.55a(z)(1) to allow the use of a Carbon Fiber Reinforced Polymer (CFRP) system for the internal repair of buried Circulating Water (CW) and Service Water (SW) systems' piping at Surry Power Station (Surry)
Units 1 and 2.
Dominion Energy Virginia provided a supplement to the alternative request by letter dated February 23, 2017 (Serial No.17-061).
By letter dated July 3, 2017, the NRG requested additional information to facilitate its review of the proposed alternative request.
The requested information is provided herein.
Note that references in the responses below to specific Enclosures and Attachments refer to Dominion Energy Virginia's CFRP alternate request submittal dated December 14, 2016, unless stated otherwise.
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NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 2 of 45
- 3. 1 Affected Components RA/ 3.1-1 Section 4 of Enclosure 1 specifies that Carbon Fiber Reinforced Polymer (CFRP) will be applied to 24, 30, 36, 43{2} and 48-inch SW pipes and 96-inch CW pipes.
[Based on Figure 10, Enclosure 5 of the proposed alternative, it appears that CFRP will also be applied to a 6-inch branch line.
However, the tables in Enclosure 2, pages 3, and Section 4 of do not indicate a 6-inch line being covered in the scope of the proposed alternative.]
(a) Will small bore piping be repaired as part of this project or does the inclusion of the branch line only refer to repair of the Tee of which the branch line is a part? (b) If long sections of small bore piping are to be repaired, it is not apparent that the process for making this type of repair has been described sufficiently in the request. Please describe this
- process, RESPONSE: No small bore piping is included in the CFRP repair system scope of work. Inclusion of the 6-inch branch line only refers to repair of a pipe tee, of which the branch line is a part, to provide structural strength from the transition area of the main pipe line to the small bore pipe penetration.
(c) Identify all branch lines and associated diameter that will be covered under the proposed alternative.
RESPONSE: Attachment A to this Enclosure includes updated, more legible drawings of the drawings previously included in Enclosure 2 of the original alternative request that identify the affected branch lines and their associated diameters.
3.2 Applicable Code RA/ 3.2-1 a) As stated in Section 5 of Enclosure 1, the proposed alternative has not yet determined the edition for the ASME Code,Section XI, for the Surry Unit 1 sixth 10-year inservice inspection (ISi) interval.
Section 10 of states that the CFRP repair system alternative will be implemented during the fifth 10-year /SI interval that began December 14, 2013, and ends on October 13, 2023, except for a common Unit 1 and Unit 2 SW line will be completed during the Unit 1 sixth 10-year IS/
interval.
The NRG notes that the request is for multiple 10 year /SI intervals.
The NRG staff also notes that the inspection of the repaired pipe is not a part of this request. Please confirm that this authorization request is to permit the repaired piping remain in service for the life of the
NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 3 of 45 repair and that any repair/replacement and/or inspections of the repaired piping will be conducted in accordance with the applicable edition of ASME Code Section XI, or alternative thereto, at the time of the repair/replacement or inspection.
RESPONSE: Dominion confirms that:.1) the CFRP alternative request is to permit the repaired piping to remain in service for the life of the
- repair, and
- 2) any repair/replacement and/or inspections of the repaired piping will be conducted in accordance with the applicable edition of ASME Boiler & Pressure Vessel (B&PV)
Code,Section XI, Rules for In-Service Inspection of Nuclear Power Plant Components, or alternative thereto, at the time of the repair/replacement or inspection.
3.5.1 General Requirements
.RAJ 3.5.1-1
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NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 4 of 45
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J RAJ 3.5.1-2 Discuss whether any locations in the proposed repair where the expected mode of degradation is other than Joss of material, e.g., cracking or cavitation.
If so, please explain how/why the proposed repair will be effective in mitigating the potential forms of degradation.
RESPONSE
Based on plant operating experience, there is no expected mode of degradation in the CW and SW piping to be repaired by the CFRP system other than loss of material due to corrosion.
RAJ 3. 5. 1-3 Discuss whether this repair will include pumps, valves, expansion joints, flange joints, small bore piping, and threaded connections. If so, please clarify how the repair will be made and the basis for determining whether it will be effective. Please provide additional details concerning such repairs and success criteria.
RESPONSE: There are no pumps, valves, expansion joints, flange joints, long runs of small bore piping, or threaded connections included in the scope of work for the Surry CFRP piping repair. [
RAJ 3.5.1-4
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NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 5 of 45 3.5.2 Material Specification RAJ 3.5.2-1 Various sections of the proposed alternative provide temperature and pressures of interest to the design and application of the CFRP repair.
Please identify where in the submittal that the NRG may find the design temperature and pressure, maximum and minimum operating pressures (as defined by the ASME Code,Section XI) for the subject piping. Please provide (a) Design pressure and temperature of the CW piping and SW
- piping, RESPONSE: The design pressure cind temperature of the CW piping and SW piping is as follows:
ESPONSE:
Design Temperature:
32°F to 105°F Design Pressure:
-14.7 psi (vacuum) to 25 psi (b) Maximum and minimum operating pressure and temperature of the CW piping and SW piping, (c) Maximum pressure and temperature that were used to qualify and analyze the CFRP system, excluding host pipe.
RESPONSE: See responses to RAI 3.5.2-1 (a) and (b) above.
LESPONSE:
RA/ 3.5.2-2
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NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 6 of 45 (d) Clarify if r J
discussed in fhe proposed alternative are the same as the operating pressure in the ASME Code, Sections Ill and XI.
J 3.5.3 Testing Quality Check for Fiber Fabrics RA/ 3.5.3-1 [
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Adhesion Test RA/ 3.5.3-2
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Density Test RA/ 3.5.3-4 NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 9 of 45 J
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RESPONSE: See response for RAI 3.5.3-1 above.
Tensile Testing RA/ 3.5.3-5
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Durability Testing RA/ 3.5.3-8 RA/ 3.5.3-9 [
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Curing Testing RAJ 3.5.3-10 RA/ 3.5.3-11[
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Heat Transfer Test RA/ 3.5.3-12[
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Weight Test RA/ 3.5.3-13 NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 13 of 45 J
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NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 14 of 45 J
Pressure Testing NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 15 of 45 RAJ 3.5.3-14 Please discuss (a) Whether a pressure test will be performed on the CFRP-repaired piping prior to the plant startup. If yes, discuss the test pressure that will be used and hold time.
RESPONSE: A pressure* test will be conducted for the inlet CFRP repaired pipe in accordance with the original code of construction, i.e., ANSI 831.1.
Open ended repaired piping will be subject to the static head pressure generated by the inlet canal. This test pressure will be maintained for sufficient time to inspect accessible joints with a minimum hold time of 10 minutes.
(b) Whether VT-2 inspection will be performed as part of pressure testing and RESPONSE: ASME VT-2 inspection of the exposed piping will be conducted.
(c) Whether the pressure test will be performed in accordance with the ASME Code, Section IWA-5000 and IWD-5000, and, if a pressure test will not be performed, provide justification.
RESPONSE
As allowed by ASME Section XI code, the pressure testing will be performed in accordance with the original code of construction, ANSI 831.1.
3.5Property "ANSI code" (as page type) with input value "ANSI 831.1.</br></br>3.5" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process..4 Design EMCB-RA/-1 Section 11 of Enclosure 1 mentions repair using CFRP for non-safety-related piping of diameter as low as 30 inches. contains repair using CFRP for safety related SW piping of diameter as low as 24 inches. Provide a discussion describing the accessibility for repair of the 24-inch diameter piping (which is smaller than 30-inch diameter) and if the repair can be performed satisfactorily to maintain adequate structural integrity.
NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 16 of 45 RESPONSE: Accessibility is expected to be acceptable since the maximum length of 24 inch pipe being repaired is only 3.25 lineal feet. This length of piping can be easily reached, with direct access on one side and access from a 42 inch pipe on the other side. For such a small length of pipe, this allows for installation personnel to be able to reach into the 24 inch pipe from either side to ensure the repair can be performed satisfactorily.
EMCB-RAl-2 Enclosure 2 states that CFRP repairs include 90 degree vertical elbows, 45 degree vertical b~nds, tie-ins and other discontinuities in addition to straight pipe segments. [
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EMCB-RA/-4 ESPONSE NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 17 of 45 J
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EMCB-RA/-9 ESPONSE:
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EMCB-RAl-10 NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 25 of 45
EMCB-RAl-11 ESPONSE:
RAJ 3.5.4-2 NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 26 of 45
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RA/ 3.5.4-3 RA/ 3.5.4-4 NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 27 of 45 J
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3.5.5 Failure Modes and Effects Analysis RAJ 3.5.5-1 [
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RESPONSE: See response to RAI 3.5.5-1 (a) above.
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RA/ 3.5.5-2
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(c) Discuss preventive measures for and how to retrieve the foreign materials that could not be captured by the travelling water screens or in-
NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 30 of 45 line strainers so that they would not cause damage to the downstream components or to the CFRP layers.
RESPONSE: The CW and SW pipelines are inaccessible during normal plant operation with the only opening existing at the traveling water screen structure located approximately 120 feet upstream from the CFRP piping.
Biofouling material (oyster shells, barnacles, hydroids, etc.) generated within the piping systems is minimized by injection of biocides into the flow stream at the inlet structure. [
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(d) Discuss whether there are sensors in the subject piping or at safety related components such as pumps and heat exchangers that provide signals to the control room to alerl the operators of any obstruction of the fluid flow caused by debris blockage.
RESPONSE
The Recirculation Spray Heat Exchangers have both flow and temperature indications in the station control room and would provide indication in the event of.flow restriction/blockage.
RAJ 3.5.5-3 LESPONSE:
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NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 31 of 45 J
RAJ 3.5.5-5 The NRC staff notes that CW and SW piping systems often have significant excess capacity, i.e., could have significant leakage from the piping and still meet their intended safety function. How large a leak in the CW and SW pipes can be tolerated?
RESPONSE: The total CW/SW canal isolation valve leakage limit for the station is 2500 gpm, which demonstrates considerable margin for the CW/SW piping systems' capacity and their ability to perform their intended safety function if they were to experience a significant leak. Additionally, absent regulatory relief, any through-wall leak on a Class 3 pipe would require the pipe to be declared inoperable and the redundant, 100% capacity train would be placed in service until repairs could be made.
Plant operation would continue in accordance with station Technical Specifications requirements.
Would a leak of this size be detectable on the surface of the ground above the buried pipe?
RESPONSE
Exposed piping is located in a confined structure (i.e. Valve pit, Condenser hotwell pit) that is equipped with flood monitoring devices that would indicate pipe leakage. However, for piping within the concrete encasement, leakage would not
NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 32 of 45 be detectible. This is the same situation for the existing pipe. The application of the CFRP system would reduce the potential for leakage beyond the existing pipe condition.
Would a hole/crack in the repaired pipe of sufficient size to be seen on the ground surface result in the structural failure of the repaired pipe or could leakage be detected prior to structural failure of the pipe?
RESPONSE
Pipe leakage would not be detectable on the ground surface for the CFRP system or the original steel pipe because they are encased in reinforced concrete and buried under the Turbine Building. Based on the reinforced concrete encasement, a pipeline break is not considered credible.
3.5.6 Pre-Installation Evaluation RAJ 3.5.6-1 SPONSE RAJ 3.5.6-2
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RAJ 3.5.6-3
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RAJ 3.5.6-4
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RESPONSE: See response to RAI 3.5.6-3 (b) above.
RAJ 3.5.6-5
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RAJ 3.5.6-6 Paragraph 8.b.ii of Enclosure 1, Page 4, states that in the case of SW, degradation includes.biofouling, as well as material degradation. Discuss the potential biofouling degradation in CW piping.
RESPONSE: The CW piping system is subject to the same biofouling degradation potential as the SW system. As noted in the response to RAI 3.5.5-2(c), biofouling material (oyster shells, barnacles, hydroids, etc.) generated within the piping systems is minimized by injection of biocides into the flow stream at the inlet structure. The CW system is inspected to the same level as the SW system per GL 89-13.
3.5. 7 Installation RAJ 3.5.7-1
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RAJ 3.5.7-5
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RA/ 3.5.7-6 [
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RA/ 3.5.7-7 ESPONSE:
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RA/ 3.5.7-8 NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 40 of 45 J
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RESPONSE: See response to RAI 3.5.7-7 (d) above.
RA/ 3.5.7-10 [
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3.5.8 Examinations Acceptance Examination RAJ 3.5.8-1 J
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lnservice Examination NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 43 of 45 RA/ 3.5.8-4 Paragraph 8(a)(i) of Enclosure 1, Page 3, discusses the inservice inspection for the CFRP-repaired CW and SW piping. (a) Please discuss how the inservice inspections of the CFRP-repaired CW and SW piping satisfy the requirements of Section XI of the ASME Code for buried pipe.
RESPONSE: As described in Surry's ISi Interval System Pressure Test Plans, flow testing of the CFRP-repaired CW and SW piping is in accordance with ASME Section XI, IWA-5244(2), which directs that the system pressure test for non-isolable buried components shall consist of a test to confirm that flow during operation is not impaired.
(b) Will periodic inspections of the inside diameter surface of the repaired CW and SW piping be conducted, if so, at what interval and by what method?
RESPONSE
lnservice inspections will be conducted for the CFRP System in accordance with the requirements of ASME B&PV Code Section XI. See Enclosure 1 section 8)b )ii) of the original alternative request.
(c) Confirm that after the SW piping is repaired with the CFRP system, the SW pipe will still be inspected in accordance with NRG Generic Letter 89-
- 13.
RESPONSE: The CFRP System will be inspected in accordance with the requirements of GL 89-13. See Enclosure 1 Section 8)b)i) and Surry Power Station Updated Safety Analysis Report (U FSAR) Section 18.2.17.
RA/ 3.5.8-5 Paragraph 8.b.ii of Enclosure 1, states that ".The acceptance criteria for visual inspections are identified in the procedures that perform the individual inspections.
The procedures identify the type and degree of anomalous conditions that are signs of degradation. In the case of SW,
NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 44 of 45 degradation includes biofouling, as well as material degradation.
Engineering evaluations determine whether observed deterioration of material condition is sufficiently extensive to lead to loss of intended function for components exposed to the service water... " (a) Discuss the acceptance criteria for visual inspections.
RESPONSE
lnservice inspections of the CW and SW systems are performed by qualified personnel who inspect and evaluate the condition of the piping and components to: 1) determine the extent of biological fouling, sediment buildup, and corrosion (including microbiologically influenced corrosion-MIC), 2) assess the effectiveness of biofouling control mechanisms and protective coating technologies, and
- 3) monitor the material integrity of metallic components, protective coating, concrete, concrete to concrete, concrete to *steel joints and Weko-Seals.
These inspections consider the following inspection criteria:
Overall Concrete Integrity Exterior of accessible exposed SW I CW piping for corrosion and coating degradation.
Specific Corrosion Inspection Criteria to be Identified and Quantified o Localized Pitting o General Pipe Wall Thinning o Microbiologically Influenced Corrosion (MIC) o Cracked or missing trash rack bars Specific Coating Inspection Criteria to be Identified and Quantified o Blistering and/or Peeling o Pin Holes o Cracking o Holidays (Bare Areas)
Specific As Found Biological Inspection Criteria o
Inspect for typical biological growth and species.
Hydroid and bryzoa growth Barnacles Sporadic ribbed mussels Sporadic oysters Expansion joint (Weko-Seal) degradation Surry inspection procedures will be revised as part of the CFRP repair design change documentation update process to include inspection of the installed CFRP material post-installation.
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NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Page 45 of 45 Miscellaneous RA/s RA/ M-1 Please (a) Submit detailed and legible drawings and sketches, including dimensions, of the pipe terminal ends.
The drawings should include where the expansion rings are installed, the end of the CFRP layers, and the area of the pipe that does not have the CFRP layers.
RESPONSE: The requested drawings are provided in Attachment D to this Enclosure.
(b) Submit drawings or sketches showing a typical cross section of the repaired pipe, including the concrete encasement, and soil above and below the buried piping. Provide dimensions if available.
RESPONSE: See Attachment F for the requested sketch.
(c) Submit legible drawings that are shown on pages 3 to 20 of Enclosure 2, and Figures 1 to 12c in Enclosure 5, Attachment 58.
RESPONSE: The requested drawings are provided in Attachments A and D to this Enclosure, respectively.
NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request Attachment A UPDATED PIPE FIGURES FROM ENCLOSURE 2 OF THE ORIGINAL ISi ALTERNATIVE REQUEST VIRGINIA ELECTRIC AND POWER COMPANY (DOMINION ENERGY VIRGINIA)
SURRY POWER STATION UNITS 1 AND 2
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Unit 1-Spring 2018 Outage Safety Pipe Service Classification Circulating SR Water (CW)
SYPB Condenser STRU Inlet "A" Manhole Riser SR from SYPB Condenser STRU Inlet "A" Representative Pipe Diagrams:
4" ABANDONED 30' MANHOLE PENETRATJON!T7P) 48'- WS-J- 10 NON-PROPRIETARY Pipe Diameter Number(s)
(in.)
96"-WC-1-10 96 Manhole Riser 30 (1-CW-FNG-1)
Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 1 of 21 Pipe Length Additional notes (ft.)
Includes one 90 degree vertical elbow. Surry to weld plates 66.00 over four abandoned 4in.
connections prior to STRUCTURAL installinQ CFRP.
Includes tie-in detailing 7.25 between manhole and 96in pipe.
53' -0 1/2' 30' MANHOLE 96'-WC-1-10 LINE MK 96' -WC-1-10 4' ABANDONED PENETRAT JON ~...._
4B"-WS-l-10
NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 2 of 21 Unit 1-Sprlng 2018 Outage, continued Safety Diameter Pipe Pipe Service Classification Pipe Number(s)
(in.)
Length Additional notes (ft.)
48-inch Service Water (SW) Supply Headerfrom Condenser "A" Inlet SR Includes end cap Supplies SYPB 48"-WS-1-10 48 53 and one 45 degree Recirculating Spray vertical bend.
(RS) and Bearing Cooling (BC)
Systems 36-inch SW Supply 36"-WS-3-10 Includes tie-in to BC Heat SR upstream of detailing between Exchangers from SYPB MOV 1-SW-36 4
one 36in. connection SW Supply Header MOV-1018 and the 48in. SW (48"-WS-1-10) pipe.
30-inch SW Supply 30"-WS-21-10 Includes tie-in to RS Heat 30"-WS-22-10 detailing between Exchangers from SR upstream of 30 11 two 30in.
SW Supply Header SYPB MOVs 1-SW-connections (each MOV-103C & 1-4ft long) and the (48"-WS-1-10)
SW-MOV-1030 48in. SW pipe.
30-inch Manhole Includes tie-in Riser from SW SR Manhole Riser 30 3
detailing between Supply Header SYPB (1 -SW-FNG-1) manhole and 48in (48" SW-1-10)
SW pipe
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Safety Pipe Service Classification cw SR Condenser SYPB Inlet "D" STRU Manhole Riser SR from Condenser SYPB Inlet "D" STRU Representative Pipe Diagrams:
4" ABANDONED PENETRAT I ON<TYP J 30" MANHOLE ENO VIEW NON-PROPRIETARY Pipe Number(s) 96"-WC-4-10 Manhole Riser (1-CW-FNG-4)
Diameter (in.)
96 30 Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 4 of 21 Pipe Length Additional notes (ft.)
Includes one 90 degree vertical elbow. Surry to weld plates 66.17 over four abandoned 4in.
connections prior to STRUCTURAL installin CFRP.
Includes tie-in detailing 7.25 between manhole and 96in pipe.
53'-0 112" 30" MANHOLE 4" ABANDONED PENETRAT I ON~
96"-WC 10 LINE MK q6"- WC 10
Pipe Service 42-inch SW Supply from Condenser "D" Inlet to Component Cooling (CC) Heat Exchan ers NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 5 of 21 Safety Pipe Diameter Additional nos.
Classification Number(s)
(in.)
SR SYPB 42"-WS-12-10 upstream of MOV 1-SW-MOV-1028 42 13 Includes 45 degree vertical bend and tie-in detailing between 42in.
pipe and 96in. pipe.
Representative Pipe Diagrams:
/
96"-WC-4-10
/
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PLAN VIEW 14' -3" 1" VENT I
8"-WS-466 ELEVATION LINE MK 42" -WS 10
Safety Pipe Service Classification CW Condenser SR Inlet "C" SYPB STRU Manhole Riser from SR Condenser Inlet SYPB "D"
STRU Representative Pipe Diagrams:
4" ABANDONED PENETRAT!ON(TYPl 30" MANHOLE 48"- WS 10 ENO VIEW NON-PROPRIETARY Pipe Number(s) 96"-WC-3-10 Manhole Riser (1-CW-FNG-3)
Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 6 of 21 Diameter Pipe Length Additional notes (in.)
(ft.)
Includes one 90 degree vertical elbow. Surry to weld plates over four 96 66.17 abandoned 4in.
connections prior to STRUCTURAL installing CFRP.
Includes tie-in detailing 30 7.25 between manhole and 96in.
pipe.
53' -0 1/2" 30' MANHOLE 4" ABANDONED PENETRA T ION ~
...,0 48' -WS 10
'lG" - llC 10 LINE MK 96'- WC 10
Safety Pipe Service Classification 48-inch SW Supply Header from SR Condenser "C" Inlet SYPB Supplies RS and BC Systems 30-inch SW Supply to RS Heat Exchangers SR from SW Supply SYPB Header ( 48"-WS-2-10) 36-inch SW Supply to BC Heat Exchangers SR from SW Supply SYPB Header (48"-WS-2-10) 30-inch Manhole Riser from SW Supply SR Header SYPB 48" SW-2-10 NON-PROPRIETARY Pipe Number(s) 48"-WS-2-10 30"-WS-23-10 30"-WS-24-10 upstream of MOVs 1-SW-MOV-103A & 1-SW-MOV-103B 36"-WS-4-10 upstream of MOV 1-SW-MOV-101A Manhole Riser (1 -SW-FNG-2)
Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 7 of 21 Diameter Pipe (in.)
Length Additional notes (ft.)
Includes end cap and 48 108.17 one 45 degree vertical bend.
Includes tie-in detailing between two 30in.
30 20.00 connections (each 10ft long) and the 48in.
pipe.
Includes tie-in detailing 36 10.00 between one 36in.
connection ( 1 Oft long) and the 48in. pipe.
Includes tie-in detailing 30 3
between manhole and 48in SW pipe Drawings for 48"-WS-2-10, 30"-WS-24-10, 30"-WS-23-10, 36"-WS-4-10 upstream of MOV
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Unit 1-Fall 2022 Outage Safety Pipe Service Classification CW Condenser SR Inlet "B
SYPB STRU Manhole Riser from SR Condenser Inlet SYPB "D,,
STRU Representative Pipe Diagrams:
4" ABANDONED PENETRAT!ONITYP)
ENO VIEW NON-PROPRIETARY Pipe Number(s) 96"-WC-2-1 0 Manhole Riser (1 -CW-FNG-2)
Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 9 of 21 Diameter Pipe Length Additional notes (in.)
(ft.)
Includes one 90 degree vertical elbow. Surry to weld plates over four 96 66.00 abandoned 4in.
connections prior to STRUCTURAL installing CFRP.
Includes tie-in detailing 30 7.25 between manhole and 96in.
pipe.
53'-0 112" 30" MANHOLE 4" ABANDONED PENETRATION ~
"-~
96'- WC 10 LINE MK qs* -wc-2-10
NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 10 of 21 Unit 1-Fall 2022 Outage, continued Safety Pipe Diameter Pipe Pipe Service Length Additional notes Classification Number(s)
(in.)
(ft.)
42-inch SW Supply 42"-WS-13-10 from Condenser Includes one 45 degree "B" Inlet to SR Component SYPB Cooling (CC) Heat Exchangers Representative Pipe Diagrams:
,,,--- % "- WC 10
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Upstream of
- MOV, 42 1-SW-MOV-102A PLAN VI EW 62' -0" vertical bend. Also includes 50.50 detailing around one 1 in.
vent line near valve.
6"-WS-10 I PLUGGED AND ABANDONED) l " VENT-,
ELEVATION LINE MK 42"-WS 10
Pipe Service 42-inch SW Supply from MOV 1-SW-MOV-102A to CC Heat Exchangers Four 30-inch SW Supply vertical risers to CC Heat Exchangers 24-inch manhole riser on 42"-WS-13-10 42-inch line from 1-SW-MOV-1028 to 42"-
WS-13-10 Safety Classification SR SYPB SR SYPB SR SYPB SR SYPB NON-PROPRIETARY Pipe Number(s) 42"-WS-13-10 30"-WS-15-10 30"-WS-40-10 30"-WS-14-10 30"-WS-16-10 Manhole Riser (1-SW-FNG-13) 42"-WS-12-10 downstream of MOV Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 11 of 21 Diameter Pipe (in.)
Length (ft.)
42 186.92 30 20.33 24 3.25 42 32.5 Additional notes Includes one end cap, four 45 degree horizontal bends, and one 45 degree horizontal "Y" in pipe.
Also includes detailing around one 4in.
connection. See capital city drawing of CCHX 11448-621-82 for further details.
Includes tie-in detailing between four 30in.
connections (each approx 5ft long) and the 42in. pipe.
Includes tie-in detailing between one 24in.
manhole (3ft tall) and the 42in. pipe.
Includes tie-in detailing to 24in. manhole on one end and valve on other
NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 12 of 21 Drawings for Pipe Numbers 30"-WS-15-10, 30"-WS-40-10, 30"-WS-14-10, 30"-WS-16-10, Manhole riser attached to 42"-WS-13-10, and 42"-WS-12-10.
62'-2' 42' - WS 10 42'- WS 10 N
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Safety Pipe Service Classification CW Condenser SR Inlet "A" SYPB STRU Manhole Riser SR from Condenser SYPB Inlet "A" STRU Representative Pipe Diagrams:
48" - WS-101-10 4' ABANDONED PENETRAT JON<TYPl ENO VIEW NON-PROPRIETARY Pipe Number(s) 96"-WC-101-10 Manhole Riser (2-CW-FNG-101)
Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 13 of 21 Diameter Pipe Length Additional notes (in.)
(ft.)
Includes one 90 degree vertical elbow. Surry to weld plates over four 96 58.83 abandoned 4in.
connections prior to STRUCTURAL installing CFRP.
Includes tie-in detailing 30 7.25 between manhole and 96in. pipe.
53'-0 l / 2' 30' MANHOLE\\
4" ABANDONED PENE TRAT ION 48" -WS-101-10
%"- WC-101-10 LINE MK 96"- WC-101 - 10
Safety Pipe Service Classification SR CW Condenser SYPB Inlet "D" STRU Manhole Riser SR from Condenser SYPB Inlet "D" STRU Representative Pipe Diagrams:
10"-WS-142-10
<BRANCH CONN ONLY!
4" ABANDONED PENETRATION< TYP l l 30" MANHOLE ENO VIEW NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 14 of 21 Diameter Pipe Pipe Number(s)
Length Additional notes (in.)
(ft.)
Includes one 90 degree vertical elbow. Surry to weld plates over four 4in.
96"-WC-104-1 0 96 58.83 connections prior to STRUCTURAL installing CFRP. Also includes connecting to a 1 Oin lateral 10"-WS-142-136 Manhole Riser Includes tie-in detailing (2-CW-FNG-104) 30 7.25 between manhole and 96in. pipe.
53' - 0 1/2" 4" ABANDONED 30" MANHOLE PENE TRAT ION 10"-WS-142-10
<BRANCH CONN ONLY!
96"-WC-104-10 LINE MK gs*-wc-104-10
Pipe Service 48-inch SW Supply Header from Condenser "A" Inlet Supplies RS and BC Systems 36-inch SW Supply to BC Heat Exchangers from SW Supply Header (48"-WS-101-
I i 3* -0*
NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 15 of 21 Safety Pipe Diameter Pipe Length Additional notes Classification Number(s)
(in.)
(ft.)
SR Includes end cap and SYPB 48"-WS-101-10 48 53 one 45 degree vertical bend.
Includes tie-in detailing SR 36"-WS-103-1 O between one 36in SYPB upstream of 36 4
connection and the MOV 48in pipe.
Includes tie-in detailing SR 30"-WS-121-10 between two 30-inch SYPB 30"-WS-122-10 30 8
connections (each 4ft long) and the 48in pipe.
Includes tie-in detailing SR 30" manhole 30 3
between one manhole SYPB (3ft tall) and the 48in pipe.
.... _ 55* -0*
{ 36 WS-103-10 I
r:ie ws-122-10 30 ws-121-10 CS>
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,...-'16*-wc-101-10 PLAN VIEW 55' -0*
- 30' MAl+lOLE 45* -ws-101 - 10 ELEVATION Lit£ MK 48"*\\IS-10 1-10
Safety Pipe Service Classification CW Condenser SR Inlet "C" SYPB STRU Manhole Riser SR from Condenser SYPB Inlet "C" STRU Representative Pipe Diagrams:
4' ABANDONED PENETRATI0N( TYP j7 30" MANHOLE 48" - WS-102-HI END VIEW NON-PROPRIETARY Pipe Number(s) 96"-WC-103-10 Manhole Riser (2-CW-FNG-103)
Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 16 of 21 Diameter Pipe (in.)
Length Additional notes (ft.)
Includes one 90 degree vertical elbow. Surry to weld plates over four 96 58.83 abandoned 4in.
connections prior to STRUCTURAL installing CFRP.
Includes tie-in detailing 30 7.25 between manhole and 96in. pipe.
53' -0 1/2" 30" MANHOLE 48' -ws-102-10 I
I 96"-WC-103-10 LI NE MK 96"-WC-103-10
Safety Pipe Service Classification 48-inch SW Supply Header from SR Condenser "C" Inlet SYPB Supplies RS and BC Systems 36-inch SW Supply to BC Heat Exchangers SR from SW Supply SYPB Header (48"-WS-102-
NON-PROPRIETARY Pipe Number(s) 48"-WS-102-10 30"-WS-124-10 30"-WS-123-10 36"-WS-104-1 O upstream of MOV 30" manhole Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 17 of 21 Diameter Pipe (in.)
Length Additional notes (ft.)
Includes end cap and 48 108.17 one 45 degree vertical bend.
Includes tie-in detailing between two 30-inch 30 20.00 connections (each 1 Oft long) and the 48in pipe.
Includes tie-in detailing between one 36-inch 36 10.00 connections ( 1 Oft long) and the 48in pipe.
Includes tie-in detailing 30 3
between one manhole (3ft tall) and the 48in i e.
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NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 18 of 21
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Pipe Safety Designation Classification SR CW Condenser SYPB Inlet "B" STRU Manhole Riser SR from Condenser SYPB Inlet "B" STRU Representative Pipe Diagrams:
10"-WS-143-10
<BRANCH CONN ONLY) ~
4" ABANDONED PENETRATION! TYPl 30" MANHOLE \\
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NON-PROPRIETARY Pipe Number(s) 96"-WC-102-10 Manhole Riser (2-CW-FNG-102)
Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 19 of 21 Diameter Pipe Length Additional notes (in.)
(ft.)
Includes one 90 degree vertical elbow. Surry to weld plates over four abandoned 96 58.83 4in. connections prior to STRUCTURAL installing CFRP. Includes connecting to a 10in. lateral (10"-WS-143-136, 11548-FP-4A &48 Includes tie-in detailing 30 7.25 between manhole and 96in pipe.
53' -0 1/2 '
30" MANHOLE \\
4" ABANDONED PENETRAT ION., -.......
96" - WC - 102-10 10"-WS-143-10
! !BRANCH CONN ONLY)
LINE MK qG* - wc-102-10
NON-PROPRIETARY UNIT 1 Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 20 of 21 UNIT LEGENQ; I. ----- UN IT
- 2.
UNI
- 3.
UN IT
- 4.
UNI
- 5.
UNIT 20 18 SPRI G OUTAGE - PLANNED 2022 FALL OUTAGE - PLANNED 202 1 SPRING OUTAGE - PLAN ED l 20 1 ~ FALL OUTAGE - PLANNED l 2025 FALL OUTAGE - PLANNED
NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request ; Attachment A; Page 21 of 21 L --*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*- * - * -* ~ *-*-*-*-*~ *-*-'- ' -* *-*-*-*-*-*-* ~ *-*- * -,
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UNI T 2 LEGEND:
UNIT 2
- 1. ---- UN IT 2 2018 FALL OUTAGE -
PLA ED 2. ---- UN IT 2 2021 FALL OUTAGE -
PLA ED
- 3. -----U IT 2 2020 SPRI G OUTAGE -
PLANNED
NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request The information contained in this attachment is requested to be withheld in its entirety because:
It reveals the distinguishing aspects of a process (or component, structure, tool, method, etc.) whose use by any of the submitter's competitors, without a license from the submitter, would constitute a competitive economic disadvantage to the submitter.
Use by a competitor of the information requested to be withheld would reduce the competitor's expenditure of resources, or improve its competitive position, in the design, manufacture, shipment, installation, assurance of quality, or licensing of a similar product.
?
The information requested to be withheld reveals commercial strategies of the submitter or customers or suppliers.
?
It reveals aspects of privately funded development plans or programs of commercial value to the submitter or owner of the information.
VIRGINIA ELECTRIC AND POWER COMPANY (DOMINION ENERGY VIRGINIA)
SURRY POWER STATION UNITS 1AND2
NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request Attachment C The information contained in this attachment is requested to be withheld in its entirety because:
It reveals the distinguishing aspects of a process (or component, structure, tool, method, etc.) whose use by any of the submitter's competitors, without a license from the submitter, would constitute a competitive economic disadvantage to the submitter.
);:.-
Use by a competitor of the information requested to be withheld would reduce the competitor's expenditure of resources, or improve its competitive position, in the design, manufacture, shipment, installation, assurance of quality, or licensing of a similar product.
Jr. The information requested to be withheld reveals commercial strategies of the submitter or customers or suppliers.
It reveals aspects of privately funded development plans or programs of commercial value to the submitter or owner of the information.
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VIRGINIA ELECTRIC AND POWER COMPANY (DOMINION ENERGY VIRGINIA)
SURRY POWER STATION UNITS 1AND2 J
NON-PROPRIETARY Serial No.17-296 Docket Nos. 50-280/281 RAI Response - CFRP Alternative Request Attachment D The information contained in this attachment is requested to be withheld in its entirety because:
> It reveals the distinguishing aspects of a process (or component, structure, tool, method, etc.) whose use by any of the submitter's competitors, without a license from the submitter, would constitute a competitive economic disadvantage to the submitter.
> Use by a competitor of the information requested to be withheld would reduce the competitor's expenditure of resources, or improve its competitive position, in the design, manufacture, shipment, installation, assurance of quality, or licensing of a similar product.
~ The information requested to be withheld reveals commercial strategies of the submitter or customers or suppliers.
> It reveals aspects of privately funded development plans or programs of commercial value to the submitter or owner of the information.
UPDATED CFRP FIGURES FROM ORIGINAL SUBMITTAL ENCLOSURES, ATTACHMENT SB VIRGINIA ELECTRIC AND POWER COMPANY (DOMINION ENERGY VIRGINIA)
SURRY POWER STATION UNITS 1AND2