ML101370186

2010/05/14 Watts Bar 2 OL - FW: Call Summary - TVA Clarification Call

ML101370186
Person / Time
Site:	Watts Bar
Issue date:	05/14/2010
From:	Office of Nuclear Reactor Regulation
To:	Division of Operating Reactor Licensing
References
Download: ML101370186 (6)

Text

1 WBN2Public Resource From: Beissel, Dennis Sent: Friday, May 14, 2010 10:21 AM To: WBN2HearingFile Resource

Subject:

FW: Call summary - TVA clarification call Attachments:

Call Record WBN_call summary March 12 2010.doc From: Stegen, Amanda [1]

Sent: Thursday, May 13, 2010 7:44 PM To: Beissel, Dennis; Logan, Dennis; Wiebe, Joel; Imboden, Andy

Subject:

Call summary - TVA clarification call AttachedisthePNNLcallsummaryforthecallNRC/PNNLhadwithTVAonMay12,2010.Pleaseletmeknowifyouhaveanyquestions.PleasenotethatTVAhadseveralactionitemsthatcameoutofthecall.Thanks,Amanda Hearing Identifier: Watts_Bar_2_Operating_LA_Public Email Number: 18 Mail Envelope Properties (87B1F1BDFE5A554CA9DC5EAA75EB6D0D1CF90711A4)

Subject:

FW: Call summary - TVA clarification call Sent Date: 5/14/2010 10:20:33 AM Received Date: 5/14/2010 10:20:36 AM From: Beissel, Dennis Created By: Dennis.Beissel@nrc.gov Recipients: "WBN2HearingFile Resource" <WBN2HearingFile.Resource@nrc.gov>

Tracking Status: None

Post Office: HQCLSTR01.nrc.gov Files Size Date & Time MESSAGE 466 5/14/2010 10:20:36 AM Call Record WBN_call summary March 12 2010.doc 101442 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: Recipients Received:

Phone/Conference Call Record Project/Plant: Watts Bar Nuclear Unit 2

Call title/subject: TVA RAI Clarification Call Purpose of call: To clarify several of the TVA RAI responses from February 25 and April 9 2010

Submittals Date: 5/12/10

Attendees:

PNNL Bob Bryce Eva Hickey Rick Traub Amanda Stegen Van Ramsdell

NRC Dennis Logan

Dennis Beissel

TVA Jerri Phillips Gordon Arent

Eddie Woods

Dennis Baxter Bo Baxter Call notes:

Land Use - Amanda Stegen PNNL requested clarification on total acreage for WBN site - there are inconsistencies with data provided in the February 25, 2010 RAI responses (1055 acres) and the value in the ER (1700 acres).

TVA response (Gordon Arent): The 1055 acres is specifically related to Watts Bar Nuclear and just a portion of the Watts bar reservation. He explained that the 1700 acres encompasses the Watts Bar Dam and Hydro-Electric Plant, the Watts Bar Steam Plant, the TVA Central Maintenance Facility, and the Watts Bar

Resort Area.

This issue is considered resolved.

Aquatic Ecology - Becky Krieg/Dennis Logan We need to be able to access the entire report on Preoperational Assessment - 1986. As we discussed previously on the phone, TVA only provided the document through page 302, and the appendices in Volume II. We are missing from page 302-484-plus

from Volume 1.

o TVA 1986. Preoperational Assessment of Water Quality and Biological Resources of Chickamauga Reservoir, Watts Bar Nuclear Plant 1973-1985. Office of Natural Resources and Economic Development - Division of Air and Water Resources.

TVA Response (Dennis Baxter): TVA is scanning the entire 1986 document and submitting to NRC. - TVA Action Item Clarification on AE specifically when we are talking monitoring sites is that the same as "beds". If it is then does the TRM 526-527 site really extend further upstream or is that just a small grouping of mussels at 592.2 R? And are these the ones you relocated across the river? Which ones were relocated to the boulder study area described in AE-

7? TVA Response (Dennis Baxter)

There is a 1994 report that has the mussel sampling stations AND the mussel beds in a figure.

The mussels from 529.2 (SCCW discharge location) were not considered part of the bed that is downstream of the SCCW discharge. These mussels were moved across the river to the mussel bed by the boat launch. Although the freshwater mussels do tend to congregate in beds, there are a few that are distributed between the beds and these were the types of mussels that were relocated.

The mussels that were placed in the boulder field as an experiment to see if cutting the flow of water would improve their survival, were randomly selected from mussel beds downstream. They are located near the 528 RM marker and almost directly across from the 528.9 boat ramp, mid-channel. They have not been checked since placement but they are being checked June 2010 during a mussel survey.

TVA will submit the figure with the sampling locations and mussel bed locations

to NRC. - TVA Action Item

Please clarify why did TVA did not provide an update of TVA 1998 Aquatic Environmental Conditions in the Vicinity of Watts Bar nuclear plant, specifically sections on the entrainment sampling that we discussed in a phone call in late January.

TVA response: TVA is still reviewing the changes to TVA 1998 (Aquatic Environmental Conditions in the Vicinity of Watts Bar Nuclear Plant During Two Years of Operation, 1996-1997) and will send it to NRC, once it has been approved. The changes to the report have been completed and the entrainment numbers recalculated based on the original data. The numbers show low levels

of entrainment for the IPS. -

TVA Action Item Hydrology - Bob Bryce/Dennis Beissel TVA Response to H-10. Clarification of the Surface Water Chemical Analysis.

TVA response (Jerry Phillips/Bo Baxter/Dennis Baxter/Gordon Arent):

TVA will be providing clarification on the analytical results for the surface water sample that was performed September 2009. Was the sample analyzed for trace metals and were they not reported because they were below detection -

TVA Action Item TVA Response to H-6. Verification of the withdrawal rate from the French Drain TVA response (Eddie Woods): Eddie explained that the approximately 70 gpm reported by Arcadis is flowing specifically from the French Drain and the 500 gpm reported by TVA is pumped from the sump and includes the water from the French Drain. The water from the sump is pumped into the yard holding pond.

This issue is resolved.

TVA Response to H-11. Clarification of information regarding through screen velocity for the intake TVA response (Dennis Baxter/Gordon Arent): TVA will be providing verification of the flow through velocities provided in the response. - TVA Action Item

Design Basin Accidents - Van Ramsdell TVA personnel that can provide information on the status of the accident analysis (it appears some accident scenarios were not analyzed) as well as the assumptions that went into the analysis.

TVA response (Frank Coonz?/Gordon Aren't): TVA will be providing status of the accidents analysis. - TVA Action Item RAD- Eva Hickey/Rick Traub TVA personnel that have an understanding of the TVA RAIs responses (related to Rad).

TVA personnel that can clarify information related to the dilution factor for the release from the plant to the river for the liquid effluents

TVA response (Eddie Woods): The dilution factors were calculated by dividing the cooling tower blowdown (20,000 gpm- 44.6 cfs)) (see Fig 3-7 of the submittal) by the effluent flow rate (can vary from less than 100 gpm to 290 gpm - 13.4 cfs to 38.8 cfs).

All fishing is assumed to be sport fishing.

There is only one terrain adjustment factor for each sector.

This issue is considered resolved.