ML20058K636: Difference between revisions
StriderTol (talk | contribs) (StriderTol Bot insert) |
StriderTol (talk | contribs) (StriderTol Bot change) |
||
| Line 18: | Line 18: | ||
=Text= | =Text= | ||
{{#Wiki_filter:.. | {{#Wiki_filter:.. | ||
t i | t i | ||
,7 May 5, 1976 t | |||
Mr. James C. Keppler Director - Region III Office of Inspection and Enforcement United States Nuclear Regulatory Cossaission 799 Roosevelt Road Glen Ellyn, Illinois 60137 | |||
==Dear Mr. Keppler:== | ==Dear Mr. Keppler:== | ||
TPA1R15 ISIAND ECCLEAR CEEERATISC PLA1.T Docket Eos. 50-282 and 50-306 In response to IE Bulletin 76-05, the follevinE information is offered: | |||
TPA1R15 ISIAND ECCLEAR CEEERATISC PLA1.T Docket Eos. 50-282 and 50-306 | |||
In response to IE Bulletin 76-05, the follevinE information is offered: | |||
As of April 7,1976, all f2 LTD relays installed in the Unit 1 Reactor Protection Logic trains were tested for drop out time response. The maximum time response for any. relay was 25 moce. This includes both noranally energised and normally de-energiand (power operating state) relays. Response data has been transmitted to Westinghouse. | As of April 7,1976, all f2 LTD relays installed in the Unit 1 Reactor Protection Logic trains were tested for drop out time response. The maximum time response for any. relay was 25 moce. This includes both noranally energised and normally de-energiand (power operating state) relays. Response data has been transmitted to Westinghouse. | ||
As of March 13. 1976. 62 of the B2 BFD relays installed in the Unit 2 Reactor | As of March 13. 1976. 62 of the B2 BFD relays installed in the Unit 2 Reactor Protection Logic trains were tested for drop out tir.e response. The maximum time response for any relay was 24 usec. Of those tested. (0 are normally energized and 2 normally de-enerEized above 10 percent tower. Of the 20 not tested,16 are cornally de-energ, ired chove 10 percent Tower. The ressaining | ||
Protection Logic trains were tested for drop out tir.e response. The maximum time response for any relay was 24 usec. Of those tested. (0 are normally energized and 2 normally de-enerEized above 10 percent tower. Of the 20 not tested,16 are cornally de-energ, ired chove 10 percent Tower. The ressaining | & provide the source ranee block pe.raissive, 2 per train, and are not readily testable at power. Response data has been trar.smitted to Westinghouse. | ||
Both trains of reley racks in both units vere originally supplied by Westinghouse with the cloth vrspred relay coils. With the possible az.ception of one or two relays all retain in use. | |||
Both trains of reley racks in both units vere originally supplied by Westinghouse | Thermal indicators are en order for obtaining coil tc. apt atura data. | ||
with the cloth vrspred relay coils. With the possible az.ception of one or two | (The range of indicators en hacd is not appropriate for quantifying relay operating temperatures.) This data will be transnitted to Westinghouse as soon as indicators are available and a supplen.antal response to Item 4 of the Bulletin will be forwarded to your office. | ||
relays all retain in use. | Yours very truly, 9102130397 760507 CF ADOCK 05000263 CF L. J. Vschter Vice President - Pcver Production cc Mr. Victor Stello and System Operation Mr. C. Charnoff Minnesota Pollution Control Agency Attention: | ||
Thermal indicators are en order for obtaining coil tc. apt atura data. (The range | l'r. J. V. Tartan LGffice of Inspection and Enforcement Washington D.C. | ||
of indicators en hacd is not appropriate for quantifying relay operating temperatures.) This data will be transnitted to Westinghouse as soon as indicators are available and a supplen.antal response to Item 4 of the Bulletin will be forwarded to your office. | --}} | ||
Yours very truly, 9102130397 CF | |||
and System Operation Mr. C. Charnoff Minnesota Pollution Control Agency Attention: l'r. J. V. Tartan LGffice of Inspection and Enforcement Washington | |||
Latest revision as of 08:28, 17 December 2024
| ML20058K636 | |
| Person / Time | |
|---|---|
| Site: | Monticello, Prairie Island  |
| Issue date: | 05/05/1976 |
| From: | Wachter L NORTHERN STATES POWER CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20058K634 | List: |
| References | |
| IEB-76-05, IEB-76-5, NUDOCS 9102130397 | |
| Download: ML20058K636 (1) | |
Text
..
t i
,7 May 5, 1976 t
Mr. James C. Keppler Director - Region III Office of Inspection and Enforcement United States Nuclear Regulatory Cossaission 799 Roosevelt Road Glen Ellyn, Illinois 60137
Dear Mr. Keppler:
TPA1R15 ISIAND ECCLEAR CEEERATISC PLA1.T Docket Eos. 50-282 and 50-306 In response to IE Bulletin 76-05, the follevinE information is offered:
As of April 7,1976, all f2 LTD relays installed in the Unit 1 Reactor Protection Logic trains were tested for drop out time response. The maximum time response for any. relay was 25 moce. This includes both noranally energised and normally de-energiand (power operating state) relays. Response data has been transmitted to Westinghouse.
As of March 13. 1976. 62 of the B2 BFD relays installed in the Unit 2 Reactor Protection Logic trains were tested for drop out tir.e response. The maximum time response for any relay was 24 usec. Of those tested. (0 are normally energized and 2 normally de-enerEized above 10 percent tower. Of the 20 not tested,16 are cornally de-energ, ired chove 10 percent Tower. The ressaining
& provide the source ranee block pe.raissive, 2 per train, and are not readily testable at power. Response data has been trar.smitted to Westinghouse.
Both trains of reley racks in both units vere originally supplied by Westinghouse with the cloth vrspred relay coils. With the possible az.ception of one or two relays all retain in use.
Thermal indicators are en order for obtaining coil tc. apt atura data.
(The range of indicators en hacd is not appropriate for quantifying relay operating temperatures.) This data will be transnitted to Westinghouse as soon as indicators are available and a supplen.antal response to Item 4 of the Bulletin will be forwarded to your office.
Yours very truly, 9102130397 760507 CF ADOCK 05000263 CF L. J. Vschter Vice President - Pcver Production cc Mr. Victor Stello and System Operation Mr. C. Charnoff Minnesota Pollution Control Agency Attention:
l'r. J. V. Tartan LGffice of Inspection and Enforcement Washington D.C.
--