ML102950397

E-Mail from Cline to Cline, Branch 3 Status - 4/14/10

ML102950397
Person / Time
Site:	Salem
Issue date:	04/14/2010
From:	Leonard Cline NRC Region 1
To:	Arthur Burritt, Leonard Cline, Leonard C NRC Region 1
References
FOIA/PA-2010-0334
Download: ML102950397 (8)

Text

iev, Tracey I

From: Cline, Leonard Sent: Wednesday, April 14, 2010 12:01 PM To: Cline, Leonard; Burritt, Arthur; Balian, Harry; DeBoer, Joseph; Miller, Ed; Ennis, Rick;.

Johnson, Jonathan; Kern, Ludwig; Patel, Amar; Raymond, William; Schroeder, Daniel; Turilin, Andrey; Welling, Blake; Douglas, Christopher Cc: Ennis, Rick; OHara, Timothy; Conte, Richard

Subject:

RE: Branch 3 Status - 4/14/10 ttachments: B3-Status 4-14-10.doc

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See attached.

Outside of Scope l*dated infor mn~tinn fnr the. Salem Unit 1 AFW niinor Outside of Scope Mation for the Rnlpm Unit I A nininqrýý I A

hiformation inthis record was deleted in acordance with the Freedom of Informrnion Act.

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Ziev,, Tracey From: Conte, Richard Sent: Tuesday, April 13, 2010 1:24 PM To: Cline, Leonard; Burritt, Arthur; Balian, Harry; DeBoer, Joseph; Miller, Ed; Ennis, Rick; Johnson, Jonathan; Kern, Ludwig; Patel, Amar; Raymond, William; Schroeder, Daniel; Turilin, Cc: Andrey; Welling, Blake; Douglas, Christopher SCc: Ennis, Rick; OHara, Timothy

Subject:

RE: Branch 3 Status 4/13/10 agreed From: Cline, Leonard Sent: Tuesday, April 13, 2010 1:23 PM To: Cline, Leonard; Burritt, Arthur; Balian, Harry; DeBoer, Joseph; Miller, Ed; Ennis, Rick; Johnson, Jonathan; Kern, Ludwig; Patel, Amar; Raymond, William; Schroeder, Daniel; Turilin, Andrey; Welling, Blake; Douglas, Christopher Cc: Ennis, Rick; OHara, Timothy; Conte, Richard

Subject:

RE: Branch 3 Status - 4/13/10 1

Ziev, Tracey From: Cline, Leonard Sent: Tuesday, April 13, 2010 1:23 PM To: Cline, Leonard; Burritt, Arthur; Balian, Harry; DeBoer, Joseph; Miller, Ed; Ennis, Rick; Johnson, Jonathan; Kern, Ludwig; Patel, Amar; Raymond, William; Schroeder, Daniel; Turilin, Andrey; Welling, Blake; Douglas, Christopher Cc: Ennis, Rick; OHara, Timothy; Conte, Richard

Subject:

RE: Branch 3 Status - 4/13/10 See attached.

- Updated information for the Salem Unit 1 AFVW piping and Salem Unit 2 tritium issues being reviewed by DRS.

Outside of Scope

Outside of Scope BRANCH 3 DAILY i 4113110 STATUS

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.BOLD items are new Outside of Scope I

I SALEM ONE Weekend Coverage: AL=(9X)>0.07 AL2(2ofM)I>.11 ,AL3( 0 JOutsirt of Scone AFW Piping Degradation

" Buried AFW piping to the 12 and 14 S/Gs appears to have significant degradation of the protective coating and piping.

The preliminary guided wave inspection results indicate that the ASME Class 2 piping is degraded below min wall, The pipe is schedule 80 4" inside diameter carbon steel piping with a coal tar type coating that appears to been hand applied. The piping run of concern involves about 150 ft of pipe that is buried at depths ranging from 4 ft adjacent to the out side of containment to 17 ft deep in a covered area adjacent to the containment.

• The UT results confirmed the guided wave results. Engineering determined they could not support operability of the piping through the next cycle,

" EOC - Unit 2 has greater margin - it is a newer plant and is presumably in better condition; documentation exists that proves the piping was opened and inspected -10 years ago and found to be in pristine condition; ISI code gives more allowance to an operating unit (they can take credit for up to 9 0% of the yield stress). DRS was provided access to the available information and completed its review. There are no immediate safety concerns.

• On each unit there are three safety-related systems with buried piping (ASW, SW and control air) o Control air coating in tact, PSEG will document the inspection.

o Control air small leak. PSEG cut out and replaced. Will, evaluate the failure mechanism (believe it was

repeatedly stepped on).

o No previous UT inspections for service water piping, previously focused on seals for bell and spigot joints (as of end of outage all will have been replaced). Based on SW piping OE the current concern would be groundwater corrosion of the metal bands between concrete layers.

o No recorded inspections of Unit 1 AFW piping PSEG evaluating past operability for Unit 1 using finite element analysis. Results will be used to determine if MC 0309 entry conditions are met (if piping was inop need to perform an MC 0309 review).

Update as of 4/1*iat 0730

• Shallow pipe UTs (1"x V' examination grid) onlhold due to increasingqrough pipe surface conditions in the, remaaining 9 of6the 28 sections.ýWill be grinding to prepare surfaces for the UTs. Hope to complete UTs by endl of 4/14.

" Fin~ite element analysis expected Ito be completed 4/14 but is dependent upon compledtion of -UTs; The FEA will be used to support bases for past operability of Unit 1, cycle operability of Unit.1, an'dto determine need for additional reviewof the pipe condition at Unit 2 a

• Accelptablebounding analysis using 0u,152 thickness at 1275 psig fdf Unit 1.

Evaluation of deep section of pipe completedb - do not anticipate any piping replacements in this area:

SU~s werecompleted around one elbow in deep section. Thinnest UT measurement in this area wasO1226" Cy~cle operability requiremen~t was 0.200"'.

• Guided wave measuremients for 20 ft of the deep straight run ae better than the origin~al guide~d waIVe resultor the shallow pipe guided wave measurements. (30% wallloss ,vs.40,owall loss)

Excavated to a level below the grund water and identified that piping was coated, Areas of pipe above that level are currently uncoated buit will be recoated.

Wilpromhdottcts f h entire length of pipqZdeera n-d sa ,foy~ ectiois - toverify rutua integrity."

p Engineering Director/Plant7,MVanager/Site VP to discuss. repair options at 110 mtoday (4140).

O.utside o0 Scope

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Outside ofscope r~MlJuJIIcuI ZL~IuIa

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Status BoardlItems:

.0 Salem AFW buried piping (PRIORITY) 1-7 Outside of Scope

Outside ofS proe1 fOuside of Seope