ML053290193

E-Mail from G. Schwartz of Entergy to Various, Regarding Unit 2 Pool Wall Update

ML053290193
Person / Time
Site:	Indian Point
Issue date:	09/26/2005
From:	Schwartz G Entergy Nuclear Indian Point 2
To:	Comiotes J, Conroy P, Dacimo F, Jones P, Leach D, Limpias O, Mayer D, Rubin P, Ventosa J - No Known Affiliation, Office of Nuclear Reactor Regulation
References
FOIA/PA-2005-0369
Download: ML053290193 (9)

Text

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Cox, Mark" From: Schwartz, Geoffrey, Sent: Monday, September 26, 2005 5:52 PM To: Dacimo, Fred; Rubin, Paul; Ventosa, John; Comiotes, Jim; Leach, Don; Mayer, Don; Conroy, Pat; Jones, T. R.; Limpias, Oscar Cc: Cox, Mark; Skonieczny, John; Santis, Hank; Hinrichs, Gary; Axelson, William L; Schwartz, Geoffrey

Subject:

Unit 2 pool wall update Attachments: West Wall Rebar.JPG; Gutter.pdf n axorft=wifth fl Ro mdof kbm~on Act, xemplio Don Leach was ill today, so I'm sending this in his behalf.

• Today we excavated down to the top of the pool base mat in the corner where the south spent fuel pool wall meets the west loading bay wall. Initially we do not see other cracks in the pool wall, and the soil/rock at this elevation (54' 7") is dry. However, we did uncover exposed rebar in the west wall. See attached photo. We wrote a CR and informed the Shift Manager. This wall is part of the PAB and does not support the pool. It appears that the concrete forms were placed against the rebar cage during construction.

• During the 72-hour period from Friday to this morning we collected 1500 mL from the moist cracks in the spent fuel pool south wall, so the rate of seepage continues to be the same, 500 mL per day.

• Radiochemistry is essentially unchanged with the exception of Boron, which has risen to nearly the same concentration as the pool.

• We will receive the final structural integrity calculation from our vendor tomorrow, then get it through Entergy review/approval. The calculation of water migration time through the wall, second draft, should be received tomorrow morning.

• We will be installing a gutter under the moist cracks tomorrow. See attached photo of how it was done outside on the east wall for the 1990-92 leak.

• Underwater Construction company will be on site for a walk-down tomorrow and to discuss potential loading pit liner weld-seam inspection/testing.

• I have directed that we start drafting the engineering for potential installation of a permanent sampling tube in the new FSB loading bay floor near the area of the cracks.

• The scaffold in the pipe pen will be certified by tomorrow. We will have the crack area cleaned and lead-abated by Wednesday or Thursday so it can be inspected and have a collection bag placed over it. We are also going to put a collection bag over some of the dry part of the crack in the south wall running from the moist area to the east. The idea behind placing plastic collection bags over a dry crack is to see if water vapor is escaping but not sufficient to form moisture in the crack.

• We are searching for information on how the Unit I pool leak rate was determined.

• We had several consultants with expertise in hydrology review the site hydrology on Friday.

I

Initially it does not appear we can take credit for existing monitoring.

West Wall Gutter.pdf (436 KB)

RebarJPG (397 KB)

Geoff Schwartz Manager, Spent Fuel Dry Storage Entergy Nuclear Northeast, Indian Point Energy Center 450 Broadway, Buchanan, NY 10511 Office (914) 734-6684 Fax (914) 271-7191 Gage JCel 3 may contain confidential CONFIDENTIALITY NOTICE: This electronic mail transmission is Intended only for the use of the Individual or entity to which It Is addressed and notified that any disclosure, Information belonging to the sender which Is protected by Entergy or the attorney-dient prvilege. I you are not the intended recipient, you are hereby In error, please notify copying, distribution, or the taking of any action In reliance on the contents of this Information Is strictly prohlbited. If you have received this transmission the sender Immediately by e-maln and delete the original message.

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C o n Ed is o n Document No: PJF-DG-s2-004 INDIAN POINT STATION Figure No: D Radiological Support Group Date: 6-11-92

Prepared by: D. "ATY 1992 SFP LINER INVESTIGATION GUTTERS WERE INSTALLED TO CONTAINf THE WATER.

BASED ON THE ISOTOPES FOUND IN THE SAMPLES IT WAS DETERMINED TO BE FROM THE UNIT 2 SPENT FUEL POOL (S,

£X 4

SERIES