ML20072Q763
| ML20072Q763 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 03/18/1983 |
| From: | Kemper J PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| REF-SSINS-6820 IEB-81-03, IEB-81-3, NUDOCS 8304050314 | |
| Download: ML20072Q763 (3) | |
Text
.
PHILADELPHIA ELECTRIC COMPANY l
2301 MARKET STREET P. 'O. BOX 8699 1881 -1981 PHILADELPHIA. PA.19101 JOHN S. MEMPER VICE PRESIDENT EMGINEE N8hG AND RESE A RCM Mr. Ronald C. Haynes, Director, Region i United States Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406
Subject:
NRC Office of Inspection and Enforcement Letter Dated: January 21, 1983 Re: Request for Additional Information Re:
IE Bulletin No. 81-03 " Flow Blockage of Cooling Water to Safety System Components by Corbicula sp. (Asiatic Clam) and Mytilus sp. CHussel)"
Limerick Generating Station Units 1 and 2 Dockets Nos. 50-352 and 50-353 File:
GOVT 1-1 (Bulletin 81-03)
Dear Mr. Haynes:
The subject letter requests the following additional information relative to item 3.9 of Bulletin No. 81-03:
1.
The results of studies conducted since the initial response to the Bulletin, 2.
The details of the program developed for preoperational monitoring.
1)
Philadelphia Electric Company initiated a program in the summer of 1982 to determine the spatial distribution of Corbicula in relation to water supply sources for Limerick Generating Station (LGS) in the Dela-ware and Schuylkill Rivers. Sampling was conducted at irregular inter-I vals in August, September, and October,1982.
On the Delaware River-samples were collected from 35 locations spaced at 2 to 4-mile intervals from Pt. Pleasant, PA (river mile 157) downstream to the Commodore Barry Bridge, Chester, PA (river mile 88). Schuylkill River samples were collected from 19 locations at 2 to 4-mile intervals from LGS (river mile 48) downstream to the mouth (river mile 0).
At each location samples were collected from both shorelines and midstream dependent on substrate type and access. At sample locations in which water was greater than 2.5 feet deep, samples were collected with a pipe dredge (6" diameter x 18" long). The pipe was dragged along the bottom and filled with sediment which was sieved through 1/8-inch mesh wire screen.
In shallow water areas, sediment was collected with a shovel and sieved as above, or organisms were collected by hand from the bottom or shoreline.
Any bivalve mollusk encountered was preserved in isopropanol and identified in the laboratory.
h 8304050314'53031B'
'fh PDR ADOCK 05000352
/
O PINT _,
Corbicula was present on the Delaware River from Trenton, NJ (river mile 137, approximately 20 miles downstream of Pt. Pleasant) to the Benjamin Franklin Bridge in Philadelphia (river mile 105). An empty shell was found 3 miles downstream at the Walt Whitman Bridge (river mile '.92). On the Schuylkill River Corbicula was present from just upstream of the Norristown. Dam (river mile 24) to just downstream of the Fairmount Dam in Philadelphia (river mile 8).
2)
A preoperational program similar to that described for 1982 will be undertaken starting in the summer of 1983 on the Schuylkill and Delaware Rivers. Additional emphasis will be placed on determining abundance of Corbicula in areas where they are now known to occur in these rivers.
Additionally, the mainstream Perkiomen Creek will be sampled from upstream of the mouth of the East Branch Perkiomen Creek to downstream of Grater-ford, PA to determine presence or absence of Corbicula. A benthic macroinvertebrate monitoring program to be undertaken on the entire East Branch 'Perkiomen Creek will provide information on the species composition and abundance of all benthic macroinvertebrates, including Corbicula if it is present.
Sincerely, A N/Cf HFH/dg/L/9 Copy to: Edward L. Jordan, Director Division of Engineering and Quality Assurance Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
20555 S. K. Chaudhary, U.S. NRC Site Resident Inspector, i.
Limerick Generating Station f
a W
J
i
+
E l
COMMONWEALTH OF PENNSYLVANIA :
as.
COUNTY OF PRTT.AMT HIA l
l t
JOHN S. KEMPER, being first duly sworn, deposes and cays:
That he is Vice President of Philadelphia Ele.ctric Company, i
the holder of Construction Permits CPPR-106 for Limerick Generating Station Unit 1; that hc has read the foregoing letter providing additional informacion relating to the Company?s Response to IE Bulletin 81 and knows the contents thereof; and that the statements and tratters set L
forth therein are true and correct to the best of his knowledge, information and belief.
t.
l.
$$ / t j
/
i l
Subscribed'and sworn to
(
before me'thi,s day of:
z._; - [k i
- ~U
~,.. ',~,, Notary Public
' PATRICIA D. SCHOL!.' -
e Netary Putlic, Philettphia, Philadchhis Co.1 nfy Commission D; ires fcbruary 10, ISTJi I'
k.: '-
?
_,