ML063050678

E-MAIL: (PD) Oyster Creek - Some Info on Penetrations

ML063050678
Person / Time
Site:	Oyster Creek
Issue date:	08/16/2006
From:	Hufnagel J Exelon Corp
To:	Ashley D Office of Nuclear Reactor Regulation
References
%dam200611, %dam200612, TAC 8261
Download: ML063050678 (5)

Text

D.

RE: RE:-OysterCreek-Some info n Penetrations e..a 1ge1 From:

<john.hufnagel @ exeloncorp.com>

To:

<DJA1 @nrc.gov>

Date:

08/16/2006 12:01:19 PM

Subject:

RE: RE: Oyster Creek - Some info on Penetrations

Donnie, We looked at Jason's mark-up. Interestingly, in talking with Don W yesterday, he had a similar question but learned that the difference between the numbers Ahmed put in the "Pipe Diameter Inch" column are pipe diameters, whereas the numbers Jason and Don noted from the drawing are penetration diameters.

We just did a quick verification and all the items that Jason identified in yellow in that column match up with what Don had also noted (with the explanation being pipe vs. penetration diameter).

The one item that Jason points out, however, related to the elevation for Penetration X-1 8 (ventilation intake) being 86' appears to be a valid catch. Ahmed and Tom Quintenz are not in today but we will double check with them tomorrow.

Please pass this back to Jason. Thanks.

- John.

---

Original Message -----

From: D. Ashley @nrc.gov

Sent: Wednesday, August 16, 2006 11:34 AM To: Ouaou, Ahmed; Hufnagel Jr, John G

Subject:

Fwd: RE: Oyster Creek - Some info on Penetrations Gentlemen See attached!

Thanks

-Donnie

>>> "Petti, Jason P" <jppetti@sandia.gov> 08/16/2006 >>>

Donnie I've attached a modified version of the Penetration list you sent me this morning. A quick comparison of the pipe diameters listed with those in the penetration schedule from the structural drawings do not match.

For example, penetration X-2A and X-2B are the main steam lines. The table sent by the plant given a diameter of 24 inches, while the structural drawings give a diameter of 36 inches. I have other references that give the diameter at 36 inches as well. Could you please pass on this inconsistency to them for clarification.

Thanks Jason From: D. Ashley @nrc.gov

Sent: Wednesday, August 16, 2006 5:32 AM To: Petti, Jason P

I'D. Ashley - RE: RE: Oyster Creek - Some info on Penetrations Tag6-2111 D. Ashley - RE: RE: Oyster Creek - Some info on Penetrations Page 2~I

Subject:

Oyster Creek - Some info on Penetrations Jason-I hope that this information is helpful.

The Licensee is still working on additional.

Thanks for your efforts on this project.

regards, Donnie Ashley NRR/DLR/RLRA Oyster Creek License Renewal Project Manger 301-4.15-3191 djal @nrc.gov

>>> <john.hufnagel @ exeloncorp.com> 08/15/2006 >>>

Donnie, Attached is a table that has elevation and azimuth information on the larger penetrations. Please pass on to Jason and let's set up a call for sometime later this week if possible. Ahmed is out at TMI for a plant walk down tomorrow, but we can perhaps discuss schedule for obtaining other information with Don W.

Thanks.

- John.

<<Drywell Large Penetrations.doc>>

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Thank You.

0.D Ashley-RE: RE: Oyster Creek - Some info on Penetrations Page3 CC:

<ahmed.ouaou @ exeloncorp.com>, <donald.warfel @ exeloncorp.com>,

<Tom.Quintenz @ exeloncorp.com>

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RE: RE: Oyster Creek - Some info on Penetrations 08/16/2006 12:00:33 PM

<john.hufnagel @exeloncorp.com>

john.hufnagel @exeloncorp.com Recipients nrc.gov DJA1 (D. Ashley) exeloncorp.com Tom.Quintenz CC donald.warfel CC ahmed.ouaou CC Post Office Route nrc.gov exeloncorp.com Files Size MESSAGE 3405 TEXT.htm 5878 Questions on Drywell Large Penetrations.doc Mime.822 80414 Date & Time 16 August, 2006 12:00:33 PM 49664 Options Expiration Date:

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U. Ashley - Uuestions on Drywell Large Penetrations.doc Page 1 j DRYWELL PENETRATIONS 4 INCH DIAMETER AND LARGER Penetratio Pipe System Name' Elevation Azimuth Load n

Diameter Ft-In2 Deg -

Number1 Inch min2 X-1A, B 120 DW Personnel/Equip. Hatch 27 - 6 342 - 0 X-2A 24 36 Main Steam 27 - 0 171 - 15 X-2B 2436 Main Steam 27-0 188-45 X-3A 10 24 Isolation Condenser(steam supply) 90 - 0 10 -30 X-3B 10 24 Isolation Condenser(steam supply) 90 - 0 349 - 30 X-4A 18 30 Feedwater 33 - 0 167 - 30 X-4B 18 30 Feedwater 33 - 0 192 - 30 X-5A 10 24 Isolation Condenser(Cond. return) 87 - 5 19 - 30 X-5B 1024 Isolation Condenser(Cond return) 87 - 5 340 -30 X-7 14 20?

Shutdown Cooling (Supply) 42 - 0 325 - 0 X-8 14 20?

Shutdown Cooling (Return) 58 - 3 290 - 15 X-9 6 22 Reactor cleanup (return) 62 - 0 85 X-10 622 Reactor Cleanup (Supply) 62-0 95 X-12B 8 22 Core Spray (Supply) 62 - 0 250 - 0 X-70 8 16 Core Spray (Supply) 79 - 6 100 - 0 X-18 18 Ventilation Intake 84 -0 86 190 - 0 X-19 18 Ventilation Exhaust 21 -3 314 - 30 X-20A 6 8?

DW closed Cooling (Supply) 47 - 6 5 - 0 X-20B 6 8?

DW closed cooling (Return) 47 - 6 10 - 0 X-63 14 Containment Spray (Supply) 62 330 - 0 X-66 14 16 Containment Spray 27 38 - 0 highlighted regions are values found on Structural Drawing Sheet #2A Penetration Schedule Based on UFSAR Table 6.2-12 2 Based on CB&I fabrication drawings 9-0971-Series