ML063410409

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E-mail Dated October 6, 2006, to Yankee Atomic Electric Company Forwarding Comments on Final Status Survey Reports
ML063410409
Person / Time
Site: Yankee Rowe
Issue date: 10/06/2006
From: John Hickman
NRC/FSME/DWMEP
To: Carson A
Yankee Atomic Electric Co
References
Download: ML063410409 (4)


Text

I:Jofn HiCKman - Comments on I-SS Page 1 1 From: John Hickman To: Alice Carson Date: 10/06/2006 3:10:56 PM

Subject:

Comments on FSS Alice, Attached are some comments on FSSs and the draft technical report you provided on hot particles.

Please forward to the appropriate people and we would like to discuss around Thursday of next week.

Thanks John

c:\temp\GWJ00001.TMP Page 1 I c:\temp\GWIOOOO1.TMP Paae 1 Mail Envelope Properties (4526AA40.E2B :12: 35218)

Subject:

Comments on FSS Creation Date 10/06/2006 3:10:56 PM From: John Hickman Created By: JBH@nrc.gov Recipients Action Date & Time comcast.net Transferred 10/06/2006 3:11:17 PM acarsonl967 (Alice Carson)

Post Office Delivered Route comcast.net Files Size Date & Time MESSAGE 695 10/06/2006 3:10:56 PM Comments on AUS-02, BRT-02, NOL-04, OMB-06, OOL-05 & draft YA-REPT-00-019-06.wpd 7376 10/06/2006 3:08:42 PM Options Auto Delete: No Expiration Date: None Notify Recipients: Yes Priority: Standard ReplyRequested: No Return Notification:

Send Notification when Opened Concealed

Subject:

No Security: Standard To Be Delivered: Immediate Status Tracking: Delivered & Opened

lIJohn Hickrmnan C-6menýts on AUS-02, BRT-02, NOL-04, OMB-06, OOL-05 & draft YA-REPT-00-019-06.wpd ....- a--1Ig NRC Comments on YR Final Status Survey Reports A UX-02, BRT-02, NOL-04, OMB-06, OOL-05

& Draft Technical report YA-REPT-O0-018-06

1. AUX-02 YR is requested to walk the Health Physics reviewer through the ISOCS data to show how they determined the value for the samples AUX-0202-1 11-F-G used in Table 8 - Original &

Replicate ISOCS scan data.

2. BRT-02 BRT-02 has twelve (12) class 1 survey units of reinforced concrete structures. Measurements made & results provided were Table 6 & 7 - direct measurements & summary, SPA-3 scans and Table 8 - ISOCS scan summary.

Where are the results of the SPA-3 surveys for BRT-01-08 (electric duct tray), BRT-01-10, BRT-01-12 and BRT-01-13?

3. NOL-04 The NOL-04 survey unit was a soil area when surveyed, and Appendix A covers survey design &

indicates that soil samples, ISOCS assays, and gamma scans would be performed.

Table 2 - the scan investigation level is provided in units of dpm/100-cm 2 . The scans were done with ISOCS at 1-m with a 180-degree open collimation configuration. It would seems that a scan investigation level in units for soil of pCi/g would be appropriate? Appendix A refers to ISOCS measurements investigation level in units of pCi/g.

Table 6 - ISOCS Scan Summary - provides the scan results in "unity". Are the units for "Unity" in terms of sum of fractions or fraction of DCGLEMc?

Section 7.0 - Conclusion - indicates that none of the "direct measurements" exceed DCGLw.

Does this statement refer to the soil sample data or the ISOCS scan survey results. [Why does YR refer to soil sample results as direct measurements?]

5. OMB-06 OMB-06-01 is a class I survey unit (structural surface) requiring 100% scans and systematic fixed-point samples.

Table 3 provides a systematic data summary & Table 4 provides biased data. Where is the scan data for this survey unit?

Lqoht ig£ m2ano,1-Comments_*0n AUS-02, B RT02, NOoL-O4.MB-O6,0QL-OS.&flraftYA-REET-OO-O!9-O6.wpd _ e Also, where is the survey data for the class 2 survey unit - OMB-06-02? Appendix A covers survey design & generally discusses the survey results, but not in terms of pass/fail based on radiological units (pCi/g) or DCGLw.

6. OOL-15 OOL-15 is a class 3 survey unit (land area). Table 4 provides the results of the systematic soil samples. Attachment A - Figure 2 indicates that gamma scans were done for three (3) areas, but the survey results are not provided in the Section 5.4 - Survey Results.
7. YA-REPT-00-018 EstimatedDosesfrom Inhalation,Ingestion and Remote Exposure for Residual Particlesat Yankee Nuclear Power Station Following License Termination.

This report deals with the potential effective dose equivalent from inhalation & ingestion of a discrete particle, and the potential effective dose equivalent for remote exposure from a discrete particle remaining on the soil surface after the final status survey.

YR also indicates that the draft report YA-REPT-00-018-06 supplements the technical report YA-REPT-016-06 dated August 2006. Page 1 of the draft report indicates that YA-REPT-016-06 deals with potential skin doses from a particle in contact with the skin.

Actually, the August 2006 report provided the (potential) effective dose equivalent for a discrete particle located on the skin. YR has not provided the estimated dose or dose equivalent to skin from a 1.7 /ICi discrete particle located on the skin surface.