W3F1-2010-0089, Response to Request for Additional Information Associated with Technical Specification Table 3.4-1 Isolation Valve Addition

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Response to Request for Additional Information Associated with Technical Specification Table 3.4-1 Isolation Valve Addition
ML110130077
Person / Time
Site: Waterford Entergy icon.png
Issue date: 01/04/2011
From: Kowalewski J
Entergy Nuclear South, Entergy Operations
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
W3F1-2010-0089
Download: ML110130077 (24)
v • d • e


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W3F1 -2010-0089 Page 2 in Attachment 2 to this letter. An additional RAI [Reference 4] was receive d and its response is included in Attachment 1 This letter contains no new commitments.

if you have any questions or require additional information, please contac t William Steelman at 504-739-6685.

I declare under penalty of perjury that the foregoing is true and correct

. Executed on January 4, 2011.

Sincerely, : Response to Request for Additional Information : LPL-EQA-35.1 Qualification Test Summary I Similarity Analys is I Temperature Service

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Attachment 1 to W3F1-2010-0089 Response to Request for Additional Information

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NRC REQUEST FOR ADDITIONAL INFORMATION



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Attachment 2 to W3F1-2010-0089 LPL-EQA-35.1 Qualification Test Summary I Similarity Analysis I Temperature Service





Attachment 2 Contains 17 Pages

LPL-EQA-35.01, Rev. 8 Attachment XI Qualification Test Summary I Similarity Analysis I Temperature Service Condition Va1cor Report MR526-6040-22-3 (Model V526-6040-22, PIN 214167301 for S[ ISV4052A & SI ISV4052B)

Attachment XLO

LPL-EQA-35.01, Rev. 8 Qualification Test Summary I Similarity Analysis / Temperature Service Condition Valcor Report MR526-6040-22-3 (Model V526-6040-22, PIN 214167301 for SIISV4052A & SIISV4052B) following Val cor Solenoid Valves were tor qualification l\lodellPart No. Ta No. SIN Descri tion V526-6\80-\ OQO 14-01-0 1-0 I lQ Valcor ,1500# ASME III, Class 2 pilot assisted, PIN 356136301 OQOI4-01-01-02 2Q nonnally open, 2-way position indicating, DC voltage solenoid operated valve. The solenoid coil assembly is a Valcor PIN V52653-6042-\ rated at 180°C (Class H), 125 VDC eontinuous dut .

The Model V526-6180-1 Solenoid Valve has a Class H 125 VDC coil which has an operating range of 100

- 140 VDC (no rectifier & zener diode assembly is used). Electrical power to operate the valve is applied to the solenoid through a conduit port located on the side of the solenoid assembly. The inrush and holding current is 1.5 amperes at 125 VDC & 70 of. The valve de-energized position (fail position) is open; therei(xe the valve is energized to close. The disc assembly consists of a stellite which seals against an ASME SA-479 Type 316 hardface seat in the valve body. The test specimen contains 2 position indicating switches which are actuated by a magnet assembly that is attached to the plunger. The coil housing a-rings were constructed with silicone rubber. The assembly drawing for solenoid valve V 526-6180-1 is shown on Dwg #356136301 (EMDRAC 5817-13985 sh\) which is included in references (h) and (i).

Solenoid Operated Valve V526-6180-1 was mounted and qualified in the stem-vertical position (QR 526-6180-1-1 section 3.6).

Acceptance Criteria and Post Qualification Baseline Function Testing of serial numbers 1Q & 2Q valves was perfonned by Valcor satisfactory results. output leakage was on both test during a Attaclnnent XL 1

LPL-EQA-35.01. Rev. 8 LEAKS SAT / SAT /SAT 15 Hydrostatic Disc Test 4CClHRMAX.

4100 psig Water f()f LEAKAGE .001 cc/min / .001 cc/min .01 cc!min / .005 cc/min 5 min.

Pull-In Voltage 57VDC MAX. 40 VDC ;' 40 VDC 37 VDC / VDC 4 VDC MIN. 16 VDC / 1 1 VDC 15.8 VDC 114 VDC Response Time Open/Close MAX. 16 msec. I 25 msec. N/A 2 sec 50.2 msec I 62 msec.

Radiation Aging Two model V526-6180-1 specimens (PIN OQ014-01-01-01 & OQ014-01-01-(2) were sequentially radiation aged in the beginning of the qualification program based on the results oftesting by the Nuclear Regulatory Commission (NRC) and reported by Sandia Laboratories in report SAND 79-0924C. Radiation exposure was perfoTI11ed by Steris-Isomedix Services under guidelines specified by Valcor. The test specimens were exposed for 106 hours0.00123 days <br />0.0294 hours <br />1.752645e-4 weeks <br />4.0333e-5 months <br /> to a Cobalt-60 gamma source and received a minimum total integrated radiation dose 0[93.6 Mrads (9.36E+7) gamma with no anomalies and no degradation of non-metanics noted (QR 526-6180-1-1 section 3.13.3). The valve's performance characteristics (pull-in, drop-out, and leakage tests) were measured satisfactorily before and after the radiation exposure.

1'>P,"1"/"'"tnf',1 in order to determine Attachment

LPL-EQA-35.01. Rev. 8 1 \

--I+T 0.00218) A Current at Ambient (I Amps)

Current Flow at Stabilized Temperature Amps)

Ambient Temperature (130.6°F)

0. Temperature Coefticient, Ohm/Ohm-oF The thelmal aging of the V 526-6180-1 solenoid valves was pertonned to simulate the effects of a 40-year design lite plus accident, except tor elastomers and non-metallic items, which were qualified for a minimum of 1O-year life plus accident. Following the Heat Rise Test, the measured temperatures \vere used to determine the tht-nnal aging times of the various test specimen components. The final thennocouple temperatures became the Actual Part Operating Tt-'lnperatures that were used to calculate qualitled life. The solenoid coil shell assembly was thermally aged 690 hours0.00799 days <br />0.192 hours <br />0.00114 weeks <br />2.62545e-4 months <br /> 415°F (Reference QR 526-6180-1-1, Appendix D, Figure 1). The limiting components in the coil shell assembly are the Coil Magnet \\lire, Coil Insulation, and Coil Lead Wire, which received an effective qualified life of 40.52 years. These three components had the lowest activation energy (eV) with a value of2.096eV.

The coil materials of construction are identitied in QR 526-6180-1-1 Appendix D, Figure 1 as:

PART MATERIAL ACTIVATION ENERGY (eV)

Coil Magnet Wire Polyimide 2.096 Coil Insulation Kapton 2.096 Insulating Tape Fiberglass 2.156 Epoxy Potting Stycast #2651 2.126 Coil Lead Wire Kapton 2.096 an elastomer, with activation energy of 1.150 eV were tested as part of a Coil-Shell Assembly Attachment

LPL-EQA-35.01, Rev. 8 Thermal/Cycle Aging Test Data 1 1 I 1 Voltage to Solenoid Pressure to Pressure Port' A .

146 VOC 15.494 i 23.206 VOC 0.5 sccm i 0.4 sccm Phase II of Cycle Aging was perfonned following Hot Cyclic Testing. An additional 8,250 cycles during Phase II Cycle Aging of the valve was perfOlmed at ambient temperature. The valve was cycled with 60 psig water a rate not exceeding 10 cycles per minute energizing the coil with 125 VOc. Operation of the valve was confIrmed by the valve shuttling and water issuing from outlet port when the IS energized as well as observation of the position indication switches.

Seismic Testing Complete successful seismic qualification testing is documented in QR 526-6180-1-1, Appendix F, Test report pages 091-189. A Resonance Search Test was performed within the range of I-100Hz. A Vibration Aging Test was perfonned and tag numbers OQO 14-01-0 1-01 and OQO 14-01-0 1-02 were subjected to an amplitude ofO.75g over the frequency range of 5 Hz to 100 Hz to 5 Hz at a sweep rate of2 octaves per minute for a minimum of90 minutes in each orthogonal axis (see QR 526-6180-1-1, Appendix F pages96-108). The SRV Alone Test was performed following Vibration Aging. Contact chatter was monitored throughout testing. Operability was monitored satisfactorily at 1, 5, 10 and 15 minutes during testing. An Operational Basis Earthquake (OBE) plus SRV excitations was perfonned in each of the X-Y and Z-Y directions using the Required Response Spectrum (RRS) method. The valve was cycled satisfactorily twice and operability was verified by a burst oft1ow from the outlet port. Safe Shutdown earthquake (SSE) in addition to SRV and LOCA excitations was also perfonned.

functional test results complied with test requirements and can be found in QR 526-6180-1-1 are Attachment XI.4

LPL-EQA-35.01. Rev. 8 are a

was applied duting the testing at a rate 15 gpm/ft2 (see Attachment were successfully operated at nominal voltage, minimum voltage and maximum throughout the LOCA/MSLB test.

The valves that are installed containment have an electrical Quick Disconnect connector manufactured EGS (QualTech NP) attached to the solenoid housing which prevents moisture/water from penetrating into instrument housings, junction boxes or the solenoid coil. The qualitied connector is a 314" N.P.T.,

quick disconnect, 10 pin bayonet style with connector field wiring consisting of 16 A WO, Rockbestos, III SIS cable.

It is assumed per calculation ECS04-0 1 Small Break Loss of Coolant Accident (SBLOCA) Alternative Tern1 (AST) Radiological Dose Consequences for 3716 MWt Extended Power Uprate (EPU) that the plant is placed on Shutdown Cooling and secondary releases through the AOV's are stopped at a time of hours. The SI-40S2A and SI-40S2B solenoid valves, nonnally de-energized and closed, will be required for a very sholi duration (approx. 7-8 minutes maximum while placing SOC into service). The function while energized is to open to equalize the SOC pressure across SI-40SA and SI-40SB. Once the pressure is equalized and SI-40SA & SI-40SB commence to open, the equalization solenoid valves can close.

It has been detern1ined that the Valcor model VS26-6040-22 is qualified tor a LOCA/MSLB event at

\Vatertord 3 based on similarity of construction and LOCA testing for qualification test sample VS2600-6042-1 exceeding the plant requirements as shown with the superimposed LOCA temperature and pressure curves f(mnd in Appendix III ofMRS26-6040-22-3. Comparisons of the LOCA/MSLB Test Temperature and Pressure Profiles f()r Repoli QR526-6042-1A can also be found this EQA (see Fig 4a Attachment

LPL-EQA-35.01. Rev. 8 Table I Valve 'lodel ~ominal Type Bonnet Flow Pressure

~o. Size (in) 'laterial 'btedal Material Capacity Class Temp (OF)

(Cv) (:\otel)

'lin)

V526-6040-22 34 Pilot Stellite 6B AS;vlE ASME 4.0 1680 650 at Operated SA182 - SA479 -

WF3 SI-4052A Grade 316

& B) F316 V526-6180-1 2 Pilot Stellite 6B AS ME ASME 10.0 1500 576 (Test Valve) Operated SA516 SA479 Grade 70 Type XM-19 V526-6042-1A Pilot 5tellite 6B AS ME ASME 2.0 2500 680 (Test Valve Operated SA240 - SA479 LOCA) Type Type 316 316 Notes:

1. All valves have body nozzles that are Class 2500 capable. Only the nozzle bores and weld end preparations vary with changes in nominal size per MR526-6040-22-3 section 4.0.

Table II Com arison olNon-lV1etallic Parts Valve Valve Valve Part Name V526-6040-22 V526-6180-1 V526-6042-1A Part Number Part Number Part Number Coil-Shell Assemblv V52653-6042-1 V52653-6042-1 V52653-6042-1 Switch Assemblv 51140-6-1 & SI140-6-5 S 1140-6-1 1140-6-1 Tenninal block 1140-14-6 & 1140-14-7 1140- 14-6 &

Attachment XI.6

LPL-EQA-35.01, Rev. 8

\'alve "alve \'alve Part "llrne V526-()040-22 VS26-(} 180-1 V526-6042-1A s S 1325-2

1. Per QR 526-6042-1 A, the PIN V52600-6042-1 A qualification test valves were modified to 1) the o-ring compounds from EPR to silicone, and 2) the o-ring seal at the solenoid/bonnet interface was replaced by a !:,rraphite seal. The o-ring material and graphite seal changes were made based upon thennal test data.

The basis is discussed below:

  • The coil shell assemblies, PIN V52653-6042-1, used in the construction of the Valcor solenoid valves model V526-6040-22 installed at W3 for RC Loops 1 & 2 SOC Pressure Equalization I Containment Isolation Lines (Sf ISV 4052A & SI IS V4052B) are identical to the tested Valeor Solenoid Valve Model V526-6180-1 (See Ref. i-Section 4.1). As can be seen from Table II above, non metallic materials used in the solenoid construction of the above two valves including the Tenninal Block, Leadwire (Bracket Tenninal Block Assembly / Switch Assembly), O-Ring (Cover to Housing / Housing to Coil Shell, Heat Shlink and Protective Tubing are all identical between the two SOY valves.
  • The differences in the solenoid valves include four position indicating switches in the model V526-6040-22 to two switches in the tested model V526-6180-1, however the switches are the same part number, PiN S 1140-6-1. The valve installed at Watertord 3 has a PIN S 1140-6-5 switch assembly, which is made of the same material as the S 1140-6-1, only has a different sensitivity. The electrical connections are both made by EGS (QualTech NP) with similar materials (See Ref. i-Sections 3,1 and 4.1.1). A zener diode which is not applicable in the model V 526-6040-22 was included in the Thermal Aging Testing and LOCA testing test valves. electrical portion was tested and qualified per Ref h and the above noted differences will have no affect on Attachment XI. 7

LPL-EQA-35.01, Rev. 8

  • A detailed similarity by hi).
  • The material, design and construction between the Valeor V526-6040-22 and the V526-6180-1 and V526-60402-1A are similar as indicated in reports MR526-6040-22-3 and QR526-6180-1-1. The differences in valve body materials, valve size, valve rating or t1m\' capacity are metallic differences only. This will have no affect on qualiflcation.
  • The Waterford 3 combined normal plus accident radiation environment is 3.331E+7 gamma (see Section II) and Valeor radiation aged successfully the solenoid to 9.36E+7 gamma with no anomalies and no deb'Tadation noted, therefore the valves have demonstrated a qualification level of 2.81 times above the requirement.
  • The solenoid assembly and a-ring seals are of the same materials and method of manufacture as the solenoid assemblies and o-ring seals qualified for 40 years in QR526-6180-1-1. Other seals have identical metallic materials which are unaffected by thennal and radiation aging.
  • Valeor successfully cycled the valves 8,289 times during thennal aging which significantly exceeds the 1 cycle evcry 18 month requirement while entering shutdown cooling (See Ref. i-Section 4.2.4).
  • Based on qualification test reports QR 526-6180-1-1, QR 526-6042-1, similarities presented in MR 526-6040-22 and discussion above, the following SOY is qualified for service at Waterford 3 in SOC lines (SI-4052A & SI-4052B).

Attachment XL8

LPL-EQA-35.01, Rev. 8 two Says are located in the RCB are nonnally closed in the de-energized position. These Says create a around the valve SI-405A(B) to minimize the void fanned during the operation cycle downstream ofSI-405A(B) before SI-405A(B) is opened during shutdown cooling operation. The valves will also function as containment isolation.

The new solenoid valve, SI-4052A(B). will be opened for approximately 7 minutes before opening SI-40SA(B). This sequence will allow RCS water from upstream ofSI-405A(B) to compress the void between SI-405A(B) and SI-407 A(B) before SI-405A(B) is opened; thus minimizing a pressure transient when SI-405A(B) is opened.

Based on a conservative energization time of hours every 18 months, the following energized percentage times can be calculated:

Valve de-energized - 99.8%

Valve energized - 0.2%

Sinee the model V526-6040-22 is a pilot-operated sav which uses the process Huid to assist in valve positioning, its coil generates less heat than equivalently sized direct-acting Says. The valve is a hard-seated solenoid valve with position indication. During nonnal plant operation the valve will be de-energized (no voltage applied to the solenoid) and the main seal, consisting of a disc assembly, which seals against a metal seat in the body isolates the outlet port from the inlet port. Since the valves are infrequently energized and for short periods of time, no significant self heating will occur.

Valcor has calculated a coil temperature of 31 of 12°F as indicated during a heat test 1 1-1 with 1 Attachment XL9

LPL-EQA-35.01, Rev. 8 chosen based on containment ambient temperature of 120°F plus some allowance t(X some mi nor seat leakage through Sr-40 1A(8).

The service temperature of the elastomers, O-rings being the life limiting component, (Dwg. 214167301 items 27 and 43 ) is calculated based on thennocouple temperatures that were recorded during the heat rise test and shown below in Figure "A" . The service temperatures for the O-rings are much lower based on the elastomer location within the valve and the thermal conduction paths from the coil. The locations are depicted below as thermocouple locations 1-4. A conservative service temperature chosen for the O-rings is 240°F while the valve is open and 180°F while the valve is closed.

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RCM TECHNOLOGIES SYSTEM 1000 REVISION 16 Qualified Life Manual Calculation Report, Page 1 December 09,2010 17:08 QUALIFIED LIFE CALCULATION Item

Description:

V526-6040-22: SI-4052A(8) Solenoid Coil CALCULATION INPUTS Activation Energy: 2.096 SERVICE CONDITIONS Service Temperature Percent of Service Life 400F 0.2%

300F 99.8%

AGING CONDITIONS Aging Temperature Aging Time 212.78C 690 Hours CALCULATION RESULTS: 58.6746 Years Prepared n:

RCM TECHNOLOGIES SYSTEM 1000 REVISION 16 Qualified Life Manual Calculation Report, Page 1 December 09, 2010 17:06 QUALIFIED LIFE CALCULATION Item

Description:

V526-6040-22: SI-4052A(B) O-rings CALCULATION INPUTS Activation Energy: 1.15 SERVICE CONDITIONS Service Temperature Percent of Service Life 240F 0.2%

180F 99.8%

AGING CONDITIONS Aging Temperature Aging Time 280F 855 Hours CALCULATION RESULTS: 14.9875 Years Prepared Reviewed By: ---"~~

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O-.T-IIV-IU APPENDIX II SHEETAII-4 V.lt

LPL-EQA-35.01, Rev. 8 FIGURE 48: LOCA/MSLB Comparision Profiles (Reference F: Report QR526-6042-1A)

Reference Calculation EC-S90-014-R01 500

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