Text

Anchor Darling Double Disc Gate Valve Information and Status
	ML17362A036
Person / Time
Site:	Saint Lucie, Point Beach, Seabrook, Turkey Point, Duane Arnold
Issue date:	12/21/2017
From:	Larry Nicholson; Florida Power & Light Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	L-2017-212
	Download: ML17362A036 (9)
	v • d • e

U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Re:

Florida Power & Light Company St. Lucie Units 1 and 2, Docket Nos. 50-335, 50-389 Turkey Point Units 3 and 4, Docket Nos. 50-250, 50-251 N extEra Energy Seabrook, LLC Seabrook Station, Docket No. 50-443 N extEra Energy Duane Arnold, LLC

Duane Arnold Energy Center, Docket No. 50-331 N extEra Energy Point Beach, LLC Point Beach Units 1 and 2, Docket Nos. 50-266, 50-301 DEC 2 l 2017 L-2017-212

Subject:

Anchor Darling Double Disc Gate Valve Information and Status

References:

1. Letter from Greg Krueger (NEI) to John Lubinski (U.S. Nuclear Regulatoi-y Commission), "Anchor Darling Double Disc Gate Valve Industry Resolution Plan Update," (Project 689), August 4, 2017 (ML17220A363)

2. Letter from Joe Pollock (NEI) to Brian Holian (U.S. Nuclear Regulatory

_ Commission), "NSIAC Concurrence on Anchor Darling Double Disc Gate Valve Industry Response Actions," (Project 689), October 26, 2017 (ML17303A031)

3. BWROG Topical Report TP-16-1-112, Revision 4, "Recommendations to Resolve Flowserve 10 CFR Part 21 Notification Affecting Anchor Darling Double Disc Gate Valve Wedge Pin Failure," August 2017 In Reference 1, the Nuclear Energy Institute (NEI) provided the NRC a resolution plan for the U.S. Nuclear Industry to address the known Anchor parling Double Disk Gate Valve (ADDDGV) issues. Reference 2 indicated each utility will provide a listing of their Anchor Darling valve population with active safety functions along with relevant valve information, including the results of susceptibility evaluations, repair status, and a repair schedule for each susceptible valve not yet repaired. Reference 2 also stated that utilities or sites without active safety function Anchor Darling DDGV s would also provide a response. Florida Power &

Light Company (FPL), acting on behalf of itself and as agent for NextEra Energy is providing this information for St. Lucie Units 1 and 2, Turkey Point Units 3 and 4, Seabrook Station, Duane Arnold Energy Center, and Point Beach Units 1 and 2.

L-2017-212 Page 2 of 3 Seabrook Station does not have any active safety function motor-operated valves with double disc gate valves manufactured by Anchor Darling or Flowserve.

The attachments to this letter contain the following information for each ADDDGV at Duane Arnold Energy Center, Point Beach, St. Lucie, and Turkey Point:

Plant Name, Unit, and Valve ID.

System.

Valve Functional Description.

Valve Size.

Active Safety Function (open, close, both).

Are multiple design basis post-accident strokes required (yes/no)?

Expert Panel Risk Ranking (high, medium, low).

Result of susceptibility evaluation (susceptible or not susceptible).

Is the susceptibility evaluation in general conformance with TP16-1-112R4 (Reference 3)?

Does the susceptibility evaluation rely on thread friction? If yes, was the coefficient of friction (COF) greater than 0.10? For cases where thread-friction was relied upon, information is provided whether the COF was above or below 0.1.

Was an initial stem-rotation check performed? If yes, include rotation criteria (i.e.

S10 degrees or :S5 degrees).

Was the diagnostic test data reviewed for failure precursors described in TP16 112R4 (Reference 3)?

The valve's repair status (i.e. repaired or not repaired).

A repair schedule for each susceptible valve.

This submittal makes commitments for repair of ADDDGVs for Duane Arnold Energy Center as provided in Attachment 2.

If you have any questions regarding this submittal, please contact Rudy Gil, Fleet Programs Engineering Manager, at 561-904-5153.

Sincerely, a~Foe ~

N,~DN Larry Nicholson Director, Nuclear Licensing and Regulatory Compliance Florida Power & Light Company

Attachments cc:

NRC Project Manager - St. Lucie NRC Project Manager - Turkey Point NRC Project Manager - Seabrook NRC Project Manager - Duane Arnold NRC Project Manager - Point Beach Regional Administrator - NRC Region 1 Regional Administrator - NRC Region 2 Regional Administrator - NRC Region 3 NRC Resident Inspector - St. Lucie NRC Resident Inspector - Turkey Point NRC Resident Inspector - Seabrook NRC Resident Inspector - Duane Arnold NRC Resident Inspector - Point Beach

\\..,*

L-2017-212 J

Page 3 of 3

ATTACHMENT 1 to L-2017-212 Anchor Darling Double Disc Gate Valve Listing

PlahtName:: :~nit;' *Va!ve.1D,(

/

" < ' ; 'Vahie,FLinc~ionatDe,sc~!Ptio,': )

'{

Anchor Darling Double Disc Gate Valve Listing (Page 1 of 3)

' 1/~l~e'Si:ze ; 'Active',*.:' ', Mi multiJ)le clesiir\\,, **.. Exp'eg' ' '

l,l,es,µ.lt elf'

Is !~.e sus~epti,b\\lity

, : safeiy //1 l:iasis.~qsbiccide,~t

,:p~nii' susceptibility,',;~~aluitio~ ingene'ral

. :ooes the susceptibili!Y )

'was an initial stefu:rotaUon,'. W~s tHediagnostic test data

evalu~ticiri re 0

ly onthre~d

'che~k performed? '>.. :,, '

' revie~;a fo[f~il~re,:

Yalverepai~

sfjtiis) *.*,,

' (i?~hes);.

/11nctio~

strokes requir~~.?,

,,.Risk' '.'.. ; ;,\\,evaiu~tl~ri,,, '

c6nformanc~ with R_ariki~l TP16:1::1/iR~;iAl

;I>;(~~~~,-, '

' (Yes/No{

.... ".:'/*.

. ;,frictiClh'?.

0

'i lf-y~s,includernta~ion* i*.: 'precursors desfrib\\!d,i_n,TPf6 :**

If yes, wasthii/coF g;e*ate(than

, '<criterja.

: iiiljR4? * :..

,'. (),10?<:..

'(repair~d ci'r' Duane Arnold 1

Duane Arnold 1

Point Beach 1

Point Beach 2

Point Beach 1

Point Beach 2

Point Beach 1

Point Beach 2

Point Beach 1

Point Beach 2

Point Beach 1

Point Beach 2

Point Beach 1

Point Beach 2

Point Beach 1

Point Beach 2

*

Close; * *

l *(1-!igh;,,';' >,(susceptiblecfr".

(Y~s/N?)

Both),

,,'Medium~ : no(sus~~ptiblei' \\ '

\\'

.:*,.. iowl***

..,\\:

,.,,::;,'**d,'

C,

.... :*:** >): *.. *. c*

M04627 M04628 CC-00719 CC-00719 RH-00700 RH-00700 Sl-00841A SJ-00841B SJ-00841A SJ-00841B SJ-00852A Sl-00852B SJ-00852A SI-00852B SJ-00851A SJ-00851B SJ-00851A SJ-008518 SJ-00856A Sl-00856B Sl-00856A SJ-00856B SJ-00860A SJ-00860B SJ-00860C SJ-00860D SJ-00860A RX RECIRC RX RECJRC REACTOR RECIRC PUMP 1P-201A DISCHARGE ISOLATION REACTOR RECIRC PUMP lP-2018 DISCHARGE ISOLATION COMPONENT COOLING CONTAINMENT COOLING WATER CONT RETURN ISOLATION VALVE COMPONENT COOLING CONTAINMENT COOLING WATER CONT RETURN ISOLATION VALVE RESIDUAL HEAT REMOVAL RESIDUAL HEAT REMOVAL SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION RCS LOW HEAD SJ PUMP SUCTION FROM RCS ISOLATION VALVE RCS LOW HEAD SI PUMP SUCTION FROM RCS ISOLATION VALVE SJ ACCUMULATOR TO RCS SUCTION ISOLATION VALVE SI ACCUMULATOR TO RCS SUCTION ISOLATION VALVE SJ ACCUMULATOR TO RCS SUCTION ISOLATION VALVE SJ ACCUMULATOR TO RCS SUCTION ISOLATION VALVE SJ CORE DELUGE ISOLATION VALVE SJ CORE DELUGE ISOLATION VALVE SJ CORE DELUGE ISOLATION VALVE SI CORE DELUGE ISOLATION VALVE SUMP A TO LOW HEAD SJ PUMP SUCTION ISOLATION VALVE SUMP B TO LOW HEAD SJ PUMP SUCTION ISOLATION VALVE SUMP A TO LOW HEAD SJ PUMP SUCTION ISOLATION VALVE SUMP B TO LOW HEAD SJ PUMP SUCTION ISOLATION VALVE RWST TO LOW HEAD SJ PUMP SUCTION ISOLATION VALVE RWST TO LOW HEAD SJ PUMP SUCTION ISOLATION VALVE RWST TO LOW HEAD SJ PUMP SUCTION ISOLATION VALVE RWST TO LOW HEAD SI PUMP SUCTION ISOLATION VALVE CONTAINMENT SPRAY PUMP DISCHARGE TO CONTAINMENT ISOLATION VALVE CONTAINMENT SPRAY PUMP DISCHARGE TO CONTAINMENT ISOLATION VALVE CONTAINMENT SPRAY PUMP DISCHARGE TO CONTAINMENT ISOLATION VALVE CONTAINMENT SPRAY PUMP DISCHARGE TO CONTAINMENT ISOLATION VALVE CONTAINMENT SPRAY PUMP DISCHARGE TO CONTAINMENT ISOLATION VALVE 22 22 6

6 10 10 10 10 10 10 6

6 6

6 10 10 10 10 10 10 10 10 6

6 6

,: 1\\. :

.: r'.S

,,.. *.:*.'.:\\*t.

Close No Low Suceptible Yes Close No Low Suceptible Yes Close No Low Not Suceptible Yes Close No Low Not Suceptible Yes Close No Medium Not Suceptible Yes Close No Medium Not Suceptible Yes None(2l No Low Not Suceptible Yes None!2l No Low Not Suceptible Yes None(2l No Low Not Suceptible Yes None!2l No Low Not Suceptible Yes No Low Not Suceptible Yes Both!3l No Low Not Suceptible Yes Both!3l No Low Not Suceptible Yes No Low Not Suceptible Yes Both No !4l Medium Not Suceptible Yes Both No !4l Medium Not Suceptible Yes Both No l4l Medium Not Suceptible Yes Both No 141 Medium Not Suceptible Yes Close No Medium Not Suceptible Yes Close No Medium Not Suceptible Yes Close No Medium Not Suceptible Yes Close No Medium Not Suceptible Yes Both No l4l Low Not Suceptible Yes Open No Low Not Suceptible Yes Both No !4l Low Not Suceptible Yes Open No Low Not Suceptible Yes Both No l4l Low Not Suceptible Yes

... (N~),.

0 (Yes,.,;():,foj;,

' (Ye;~.so.;ro),*

Yes,> 0.10 Yes,> 0.10 No No Yes, '.',0.10 Yes, '.',0.10 Yes,'.',0.10 Yes, '.',0.10 Yes, '.',0.10 Yes, ::,0.10 No No No No No No No No No No No No No No No No No (N?),: i* '

('(es/ Np)~,

,(Yes, :510 deg\\'

(Yes}:55 det,F Yes,::; 10 deg Yes Yes, ::; 10 deg Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes 1 not r~piirkcj) ~.*

';,\\ **}', ::~

//. F;;'

not repaired 111 not repaired (ll not repaired not repaired not repaired not repaired not repaired not repaired not repaired not repaired not repaired not repaired not repaired not repaired not repaired not repaired not repaired not repaired not repaired not repaired not repaired not repaired not repaired not repaired not repaired not repaired not repaired

It Point Beach 2

Point Beach 2

Point Beach 1

Point Beach 2

Point Beach 1

Point Beach 2

St. Lucie 2

Turkey Point 3

Turkey Point 4

Turkey Point 0

Turkey Point 3

Turkey Point 4

Turkey Point 3

Turkey Point 4

Turkey Point 3

Turkey Point 4

Turkey Point 3

Sl-00860B Sl-00860C Sl-00860D Sl-00866A Sl-00866B Sl-00866A Sl-00866B Sl-00871A Sl-00871B Sl-00871A Sl-00871B 2-MV-08-12 2-MV-08-13 MOV-3-869 MOV-4-869 MOV-878A MOV-878B MOV-3-843A MOV-3-843B MOV-4-843A MOV-4-843B MOV-3-716B SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION AUX FEEDWATER AUX FEEDWATER SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION

'.f CONTAINMENT SPRAY PUMP DISCHARGE TO CONTAINMENT ISOLATION VALVE CONTAINMENT SPRAY PUMP DISCHARGE TO CONTAINMENT ISOLATION VALVE CONTAINMENT SPRAY PUMP DISCHARGE TO CONTAINMENT ISOLATION VALVE HIGH HEAD SI PUMP TO CONTAINMENT ISOLATION VALVE HIGH HEAD SI PUMP TO CONTAINMENT ISOLATION VALVE HIGH HEAD SI PUMP TO CONTAINMENT ISOLATION VALVE HIGH HEAD SI PUMP TO CONTAINMENT ISOLATION VALVE LOW HEAD SI TO CONTAINMENT SPRAY PUMP SUCTION ISOLATION VALVE LOW HEAD SI TO CONTAINMENT SPRAY PUMP SUCTION ISOLATION VALVE LOW HEAD SI TO CONTAINMENT SPRAY PUMP SUCTION ISOLATION VALVE LOW HEAD SI TO CONTAINMENT SPRAY PUMP SUCTION ISOLATION VALVE STEAM GEN 2A MAIN STEAM TO AFW PUMP 2C FLOW ISOLATION VALVE STEAM GEN 2B MAIN STEAM TO AFW PUMP 2C FLOW ISOLATION VALVE SI TO LOOP A&B HOT LEG MTR OP ISO VLV SI TO LOOP A&B HOT LEG MTR OP ISO VLV HHSI HEADER SECTIONALIZING MOTOR OPERATED VLV HHSI HEADER SECTIONALIZING MOTOR OPERATED VLV HHSI TO COLD LEG MOV HHSI TO COLD LEG MOV HHSI TO COLD LEG MOV HHSI TO COLD LEG MOV COMPONENT COOLING MOTOR OPERATED ISO VLV FOR CCW SUPPLY TO RCP COOLERS MOV-4-716B COMPONENT COOLING MOTOR OPERATED ISO VLV FOR CCW SUPPLY TO RCP COOLERS MOV-3-730 COMPONENT COOLING MOTOR OPERATED ISO VLV FOR CCW RTN MOV-4-730 MOV-3-880A MOV-3-880B TO RCP COOLERS COMPONENT COOLING MOTOR OPERATED ISO VLV FOR CCW RTN TO RCP COOLERS CONTAINMENT SPRAY CTMT SPRAY PMP DISCH ISO VLV CONTAINMENT SPRAY CTMT SPRAY PMP DISCH ISO VLV 6

Open 6

Both 6

Open 4

Both 4

Both 6

Both 4

Both 3

Both 4

Close 4

Both 4

Both 6

Close 6

Open 6

Open Anchor Darling Double Disc Gate Valve Listing (Page 2 of 3)

No Low Not Suceptible Yes No No 141 Low Not Suceptible Yes No No Low Not Suceptible Yes No Yes Medium Not Suceptible Yes No Yes Medium Not Suceptible Yes No Yes Medium Not Suceptible Yes No Yes Medium Not Suceptible Yes No Yes Medium Not Suceptible Yes No Yes Medium Not Suceptible Yes Yes, ~0.10 Yes Medium Not Suceptible Yes Yes, ~0.10 Yes Medium Not Suceptible Yes No Yes High Not Suceptible Yes No Yes High Not Suceptible Yes No Yes Low Not Suceptible Yes Yes, ~0.10 Yes Low Not Suceptible Yes Yes,~0.10 No Low Not Suceptible Yes Yes,~0.10 No Low Not Suceptible Yes Yes, ~0.10 Yes High Not Suceptible Yes Yes, <0.10 Yes High Not Suceptible Yes Yes, <0.10 Yes High Not Suceptible Yes Yes, ~0.10 Yes High Not Suceptible Yes Yes, ~0.10 No Low Not Suceptible Yes No No Low Not Suceptible Yes No No Low Not Suceptible Yes No No Low Not Suceptible Yes No No Medium Not Suceptible Yes Yes, <0.10 No Medium Not Suceptible Yes Yes, <0.10 No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired Yes151 Yes not repaired Yes151 Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired Anchor Darling Double Disc Gate Valve Listing (Page 3 of 3)

Turkey Point 4

MOV-4-880A CONTAINMENT SPRAY CTMT SPRAY PMP DISCH ISO VLV 6

Open No Medium Not Suceptible Yes Yes, <0.10 Turkey Point 4

MOV-4-880B CONTAINMENT SPRAY CTMT SPRAY PMP DISCH ISO VLV 6

Open No Medium Not Suceptible Yes No Turkey Point 3

MOV-3-865A SAFETY INJECTION Turkey Point 3

Turkey Point 3

Turkey Point 4

Turkey Point 3

Turkey Point 4

Turkey Point 3

Turkey Point 4

Turkey Point 3

Turkey Point 4

Turkey Point 3

Turkey Point 4

MOV-3-865B MOV-3-865C MOV-4-865A MOV-4-865B MOV-4-865C MOV-3-860A MOV-3-860B MOV-4-860A MOV-4-860B MOV-3-861A MOV-3-861B MOV-4-861A MOV-4-861B MOV-3-862A MOV-3-862B MOV-4-862A MOV-4-862B MOV-3-864A MOV-3-864B MOV-4-864A MOV-4-864B SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION RESIDUAL HEAT REMOVAL RESIDUAL HEAT REMOVAL RESIDUAL HEAT REMOVAL RESIDUAL HEAT REMOVAL RESIDUAL HEAT REMOVAL RESIDUAL HEAT REMOVAL RESIDUAL HEAT REMOVAL RESIDUAL HEAT REMOVAL RESIDUAL HEAT REMOVAL RESIDUAL HEAT REMOVAL RESIDUAL HEAT REMOVAL RESIDUAL HEAT REMOVAL SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SAFETY INJECTION SI ACCUM A DISCH MOTOR OPERATED 10 None121 VLV SI ACCUM B DISCH MOTOR OPERATED VLV 10 None121 SI ACCUM C DISCH MOTOR OPERATED VLV 10 None121 SI ACCUM A DISCH MOTOR OPERATED 10 None121 VLV SI ACCUM B DISCH MOTOR OPERATED VLV 10 None(2l SI ACCUM C DISCH MOTOR OPERATED VLV 10 None(2l RECIRC SUMP TO RHR PUMP SUCTION 14 Open MOTOR OPERATED VLV RECIRC SUMP TO RHR PUMP SUCTION 14 Open MOTOR OPERATED VLV RECIRC SUMP TO RHR PUMP SUCTION 14 Open MOTOR OPERATED VLV RECIRC SUMP TO RHR PUMP SUCTION 14 Open MOTOR OPERATED VLV RECIRC SUMP TO RHR PUMP SUCTION 14 Open MOTOR OPERATED VLV RECIRC SUMP TO RHR PUMP SUCTION 14 Open MOTOR OPERATED VLV RECIRC SUMP TO RHR PUMP SUCTION 14 Open MOTOR OPERATED VLV RECIRC SUMP TO RHR PUMP SUCTION 14 Open MOTOR OPERATED VLV MOTOR OPERATED STOP VLV ON RHR 14 Close PUMPS SUCTION HDR MOTOR OPERATED STOP VLV ON RHR 14 Close PUMPS SUCTION HDR MOTOR OPERATED STOP VLV ON RHR 14 Close PUMPS SUCTION HDR MOTOR OPERATED STOP VLV ON RHR 14 Close PUMPS SUCTION HDR RWST MTR OP ISO VLVTO SI & RHR 16 Close PUMPS RWST MTR OP ISO VLV TO SI & RHR 16 Close PUMPS RWST MTR OP ISO VLV TO SI & RHR 16 Close PUMPS RWST MTR OP ISO VLVTO SI & RHR 16 Close PUMPS (Al Applied Wedge Pin Torque must bound anticipated design basis operating torque requirements and current maximum total torque No Low Not Suceptible No Low Not Suceptible No Low Not Suceptible No Low Not Suceptible No Low Not Suceptible No Low Not Suceptible No Medium Not Suceptible No Medium Not Suceptible No Medium Not Suceptible No Medium Not Suceptible No Medium Not Suceptible No Medium Not Suceptible No Medium Not Suceptible No Medium Not Suceptible No Medium Not Suceptible No Medium Not Suceptible No Medium Not Suceptible No Medium Not Suceptible No Medium Not Suceptible No Medium Not Suceptible No Medium Not Suceptible No Medium Not Suceptible (ll Low Risk MOV. Category C per NRC Letter dated July 31, 2017, Response from the Nuclear Regulatory Commision Regarding the Anchor Darling Double Disc Gate Valve Industry Resolution Plan.

(2l MOVs do not have an active safety function but are included in the GL 89-10/96-05 Program.

3l Close direction safety function is to throttled/intermediate position.

!4l Only one Open and one Closed post-accident stroke required.

151 Visual Stem Rotation Check performed in conjunction with diagnostic test. No significant rotation noted when changing direction from closed to open.

Yes Yes,~0.10 Yes Yes,~0.10 Yes No Yes Yes, ~0.10 Yes Yes,~0.10 Yes Yes,~0.10 Yes No Yes No Yes Yes, ~0.10 Yes No Yes Yes,~0.10 Yes No Yes No Yes Yes, ~0.10 Yes Yes,~0.10 Yes Yes, ~0.10 Yes Yes, ~0.10 Yes No Yes No Yes No Yes No Yes151 Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired No Yes not repaired

ATTACHMENT 2 to L-2017-212 Summary of Commitments Summary of Commitments (Page 1 of 1)

The following table identifies commitments made in this document. (Any other actions discussed in the submittal represent intended or planned actions. They are described to the NRC for the NRC's information and are not regulatory commitments.)

I COMMITMENT TYPE COMMITTED DATE OR ONE-TIME COMMITMENT "OUTAGE" ACTION Continuous/Cyclical (Yes/No)

(Yes/No)

Repair the following Group C AD DDGV MOVs:

MOV Number Outage(Year)

Duane Arnold M04627 RF027(2020)

Yes No Duane Arnold M04628 RF028(2022)

Yes No Perform diagnostic testing and stem rotation checks with contingent repairs on the following AD DDGV MOVs:

MOV Number Outage(Year)

Duane Arnold M04627 RF026 (2018)

Yes No Duane Arnold M04628 RF026 (2018), RF027 (2020)

Yes No I

v t e Letter Sequence Request
CAC:MF9859, (Approved, Closed) CAC:MF9860, (Approved, Closed)
Initiation Request, Request, Request, Request, Request Acceptance Administration Questions Answers Results Approval Other:
MONTHYEAR2017-08-10 [Table View]

L-2017-212, Anchor Darling Double Disc Gate Valve Information and Status

Text

Subject:

References:

Navigation menu

L-2017-212, Anchor Darling Double Disc Gate Valve Information and Status

Text

Subject:

References:

Navigation menu

Search