ML050740449

Modification to Construction Permit 6704501, Issued April 5, 2004, Permit No. 6704516 Ma Temporary Use of Reverse Osmosis

ML050740449
Person / Time
Site:	Peach Bottom
Issue date:	03/02/2005
From:	Grimes J Exelon Nuclear
To:	Filip T Office of Nuclear Reactor Regulation, State of PA, Dept of Environmental Protection
References
6704501, 6704516
Download: ML050740449 (2)

Text

Exekesn.M Exelon Nuclear Telephone 717.456.7014 Nuclear Peach Bottom Atomic Power Station www.exeloncorp.com 1848 Lay Road Delta, PA 17314-9032 March 2, 2005 Mr. Thomas Filip Pennsylvania Department of Environmental Protection 909 Elmerton Avenue Harrisburg, PA 17110-8200

Subject:

Peach Bottom Atomic Power Station, PWS 7670905 Modification to Construction Permit 6704501, issued April 5, 2004 Permit No. 6704516 MA Temporary Use of Reverse Osmosis

Dear Mr. Filip,

This letter is to request a modification for the Construction Permit for Peach Bottom Atomic Power Station, PWS 7670905. Permit No. 6704501 was initially granted by the PA DEP on April 5, 2004.

The construction permit modification is requested due to the fact that upon installation of the new flow elements, a lower than anticipated flow was indicated. Follow-up system inspection showed that the piping leading to the polishing filters had become restricted due to corrosion build-up. This corrosion was most likely accelerated during the three months the system was out of service. The piping will be cleaned and disinfected prior to the system being placed in service.

In addition, the filter rinse time for the polishing filters is significantly longer than normal. It is our intent to replace the filter media (sand and anthracite), and also the stainless steel bottom strainers on the polishing filters. Replacements will be done using NSF standards. Attached are the specifications for the media.

Peach Bottom is requesting an extension to May 31, 2005, for Permit No. 6704516 MA for continued use of reverse osmosis in order to accommodate the work on the polishing filters and piping.

If you need further information, please contact Art Arcilla (717 456-4185) or Daniel Jordan (717 456-4551).

Sincerely, Jos h P. Grimes, Plant Manager Peach Bottom Atomic Power Station ccn 05-14032 US NRC Region 1 Administrator Senior Inspector, PBAPS Daniel M.Jordan Tracy J. Siglin G tD Angela Anderson, PA DEP York County Office Correspondence Control Desk US NRC Document Control Desk Docket 50/277, 501278

Filter Media Specifications Layer Effective Depth in Size Range Uniformity inches in min Coefficient Silica Sand 9.25 0.45-0.55 1.6 Anthracite 25 0.65-0.76 1.6