ML022400787

E-Mail from John Harrison to Jacob Zimmerman Re Vhp Nozzle Status Report Update

ML022400787
Person / Time
Site:	Millstone, Davis Besse, Cook
Issue date:	01/24/2002
From:	Harrison J Office of Nuclear Reactor Regulation
To:	Jacob Zimmerman Office of Nuclear Reactor Regulation
References
FOIA/PA-2002-0229
Download: ML022400787 (2)

Text

SPage 1 acob

. immerman - Re: VHP Nozzle Status Report Update, .a. e 1 From: John Harrison ti AJ To: Zimmerman, Jacob Date: Thu, Jan 24, 2002 2:16 PM

Subject:

Re: VHP Nozzle Status Report Update Jake, Updated report attached per your request.

John

>>> Jacob Zimmerman 01/24/02 01:17PM >>>

Please send me you updated information by COB today. I plan to issue tomorrow's update by noon tomorrow. Attached is last week's status report.

John H. - Brief summary of today's Millstone 2 meeting.

Stephen S. - Brief summary of yesterday's Davis-Besse meeting.

John Stang - Status of D.C. Cook's inspections (i.e., plan to start when?, etc..)

Allen Hiser - Any updates to closeout fetters and status of EMCB reviews.

Thanks, Jake CC: Hiser, Allen; Lee, Andrea; Wetzel, Beth a -")- //,o

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.Jacob Zimmerman - 011-18-02 Millstone update to BulletinSR.wpd PRE-DECISIONAL INFORMATION - NOT FOR PUBLIC DISCLOSURE STATUS REPORT BULLETIN 2001-01, CIRCUMFERENTIAL CRACKING OF REACTOR PRESSURE VESSEL HEAD PENETRATION NOZZLES PLANTS WITH REFUELING OUTAGES SPRING 2002 Millstone, Unit 2 (February 2002)

Licensee Plans/Commitments: The licensee has committed to an inspection that will interrogate the nozzle base material and the weld material using a rotating UT transducer (this plant does not have thermal sleeves in its CRDM nozzles). The licensee has concluded that a visual inspection is not viable at this time because of the contoured insulation, presence of asbestos, restricted access, and ALARA concerns.

On January 24, 2002, the licensee presented their plans to inspect the VHP nozzles.

Currently, they plan to inspect 100% of the nozzles. If, however, the inspection equipment fails prior to this goal, they hope to be able to justify inspecting fewer nozzles. Though, this justification would only be attempted if no unacceptable flaws had been identified in any other nozzles already examined. The licensee presented the statistical analysis that they would use to support this contingency plan. The presentation also included a description of the equipment, technology, and methods to be utilized to interrogate the nozzles and to visually depict the transducer data.

Staff Position: The examination equipment, technology, and methods proposed to be utilized by the licensee in their upcoming outage to inspect the nozzles appear to provide an effective examination. However, the staff did not agree with the licensee's statistical analysis used to justify inspecting fewer than 100% of the nozzles.

Planned Meetings & Teleconferences: None.

ACTION ITEM: The licensee needs to submit the information presented in the January 24 meeting for the staff to review.

PRE-DECISIONAL INFORMATION - NOT FOR PUBLIC DISCLOSURE

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