ML20079S278: Difference between revisions

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| number = ML20079S278
| number = ML20079S278
| issue date = 06/10/1983
| issue date = 06/10/1983
| title = Responds to NRC 830428 Ltr Re Violations Noted in IE Insp Repts 50-373/82-54 & 50-374/82-22.Corrective Actions: Response Re Fire Endurance Capability of Us Gypsum Cement Firestops Will Be Submitted by 830805
| title = Responds to NRC Re Violations Noted in IE Insp Repts 50-373/82-54 & 50-374/82-22.Corrective Actions: Response Re Fire Endurance Capability of Us Gypsum Cement Firestops Will Be Submitted by 830805
| author name = Farrar D
| author name = Farrar D
| author affiliation = COMMONWEALTH EDISON CO.
| author affiliation = COMMONWEALTH EDISON CO.
Line 11: Line 11:
| contact person =  
| contact person =  
| document report number = 6755N, NUDOCS 8307110419
| document report number = 6755N, NUDOCS 8307110419
| title reference date = 04-28-1983
| package number = ML20079S256
| package number = ML20079S256
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, UTILITY TO NRC
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, UTILITY TO NRC

Latest revision as of 21:22, 26 September 2022

Responds to NRC Re Violations Noted in IE Insp Repts 50-373/82-54 & 50-374/82-22.Corrective Actions: Response Re Fire Endurance Capability of Us Gypsum Cement Firestops Will Be Submitted by 830805
ML20079S278
Person / Time
Site: LaSalle  Constellation icon.png
Issue date: 06/10/1983
From: Farrar D
COMMONWEALTH EDISON CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20079S256 List:
References
6755N, NUDOCS 8307110419
Download: ML20079S278 (2)


Text

.-

7 e . / \ Commonwealth Edison

' -[ ' ) One First National Plua, Chic *go, Illinois

\ O Address Reply to: Post Office Box 767

~\ Chicago, lilinois 60690 June 10, 1983 Mr. James G. Keppler, Regional Administrator

- Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137

Subject:

LaSalle County Station Units 1 and 2 Firecode CT Gypsum Cement Firestops

  • NRC I.E. Inspection Report Nos.

50-373/82-54 and 50-374/82-22 NRC Docket Nos. 50-373 and 50-374 References (a): R. L. Spessard letter to Cordell Reed dated April 28, 1983. ,

(b): D. L. Farrar letter to J. G. Keppler dated May 27, 1983.

Dear Mr. Keppler:

. Reference (a) transmitted Inspection Report Nos. 50-373/82-54 and 50-374/82-22. The Commonwealth Edison Company response to the Notice  ;

of Violation was submitted by Reference (b).

Reference (a) also stated:

"During the inspection, questions were raised regarding the fire endurance capability of firestops which: '

1. exhibit cracks and/or separations.
2. contain breakthroughs for tne routing of new cables.
3. may exceed the cable density used in the tests performed to

. qualify the assemblies as 3-hour fire barriers, 4.- deviate from the configurations qualified by tests.

These issues are addressed in the report. Please submit within 60 days of the date of this letter the necessary documentation, backed by appropriate testing to ASTM E-119, to justify the position.taken by your representatives during or subsequent to the inspection."

)

g7g0[ o b h3 PDR G , , ,

J. G. Keppler -

2- June 10, 1983 We will not be able to submit a complete response within 60 days of Reference (a). Our response will cover every item regarding the fire endurance capability of the Firecode CT Gypsum cement firestops except the cable densities in the Unit 1 penetrations. We will submit our response on this item by August 5, 1983.

1 This delay is caused by the large amount of labor required to determine the cable density in each penetration. This work requires about 750 man-hours of labor per unit. This delay was discussed and approved by Mr. F. Maura in a telecon with C. W. Schroeder on June 10, 1983.

If there are any further questions regarding this matter, please contact this office.

Very truly yours, C c ps/ B 3 d s- D. L. Farrar Director of Nuclear Licensing jj CWS/Im cc: Region III Inspector - LSCS i

1 6755N

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