ML20127H174
| ML20127H174 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 01/15/1993 |
| From: | William Cahill, Woodlan D TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| RTR-REGGD-01.052, RTR-REGGD-1.052 TXX-93036, NUDOCS 9301220241 | |
| Download: ML20127H174 (2) | |
Text
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e MM Log # TXX-93036 C **""
File # 10010 J
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912 906.5 1UELECTRIC January 15, 1993
% lifiam J. Cahill. Jr.
Group G r Preua. nr U. S. Nuclear Regulatory Commission Attention:
Dccument Control Desk Washington, DC 20555
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET NOS. 50-445 AND 50-446 ADDITIONAL INFORMATION CONCERNING CHARC0AL ADSORBER TESTING AND REPLACEMENT REF:
TV Electric letter logged TXX-92568 f rom Mr. William J. Cahill, Jr. to USNRC dated December 18, 1992 Gentlemen:
The referenced letter provided the clarification regarding replacement of charcoal in the charcoal adsorber bed and testing of the representative sample of the charcoal in FSAR Chapter 1A(B) for NRC RG 1.52 (See page IA(B)-26). The NRC staff reviewed this clarification and requested that additional information be provided.
Attached draft is the requested additional information, which will be incorporated in the next FSAR Amendment, if there are any questions, please contact Manu C. Patel at (214) 812-8298.
Sincerely, William J, Cahill, Jr.
By:
UU 2)!.0111 D. R. woodle r '
Docket Licensing Manager MCP/grp Attachment c-Mr. J. L. Milhoan, Region IV Resident Inspectors, CPSES (2)
Mr. T.
A.
Bergman, NRR Mr.
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E. Hollan, NRR Ms. Donna Skay, NRR 9301220241 930115 b
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PDR am N. Cmvt Sucet LD. A! IMas, Tens 75201 -~
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- At tachment to TXX-93036 CPSES/FSAR e Page'I of 1 77 '
to ASTM D3803-79), except for the determination of the efficiency of charcoal to remove radiciodine.
The parameters applicable to new and used charcoal at CPSES shall be applied in the lab test as follows:
76 New ChamgM Used Charcgd 77 4" Beds 4" Beds 77 40 ft/ min 40 ft/ min 77 300C & 95% RH 300C & 70% RH l
77 Pre-equilibrated Non-pre-equilibrated l
77 l
76 The allowable methyl iodide penetration for 99% efficient units j
shall be 0.2% instead of 0.175% as shown in Table 2 of the i
Regulatory Guide.
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DRAFT The carbon adsorber beds will be replaced when (1) testing in
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accordance with the-frequency specified in Footnote c'of-Table 2 results in a representative sample failing to pass the applicable f
test in Table 2 or.(2) no representative sample is available for testing, at a time shen testing is required..
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76 This design conforms to the intent of NRC Regulatory Guide 1.52 revision 2 (03/78).
l Reaulatorv Guide 1.53 i
Application of the Single-failure Criterion to Nuclear oower Plant Protection Systems Discussion 66 B0P systems meet the recommendations of this regulatory guide (dated l'
June 1973) in accordance with the comments of Section 7 1.2.7' 66 Also refer to Appendix 1A(N).
Draft Version 1A(8)-26
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