ML18283B371
| ML18283B371 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  (DPR-033, DPR-052, DPR-068) |
| Issue date: | 12/06/1977 |
| From: | Gilleland J Tennessee Valley Authority |
| To: | Case E Office of Nuclear Reactor Regulation |
| References | |
| Download: ML18283B371 (8) | |
Text
DISTRIBUTION AFZER ISSUANCE OPEKQ~G LICENSE NRCPORM t96 NUCLEAR RSGV AMATORY C
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NR! OISTRIBUTIQN PoR PART'60. OOC KEYM4TERIAI DOCKRT NUM sR
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Pl! S NUMBSR Hr. Edson G.
Case FROM: ~A Chat tanooga, Tenn.
37401 J.
E. Gilleland DATa OP DOCVMsNT OATS Rscslveo
! QI. TTSR Q OR IGINAI Qcopv QNOTORIZKD QUNC~IPIsD PROP INPUT'ORGY@
NVMSSR OP CCPISS RSCSIVSD
/Sr&a CSSCRIPTION 1p KNcI OSURa Consists of Revision 2 to the
- response, sUbmitted 11/28/77, to TVA's ltr to God+in Wil1.iams, Jr. dtd 11/18/77, concerning "Electrical Connector Assemblies."...
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BROGANS FERRY UNITS 1 - 3
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??3460104
Mr. Edson G. Case, Acting Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20555 830 Power Building
>irg f,'!!I.'
A9 TENNESSEE VALLEYAUTggg[P($ f g~
December 6, 1977 c<~
Dear Mr. Case:
In the Matter of
)
Tennessee Valley Authority
)
Docket Nos.
50-259 50-260 50-296 Enclosed is Revision 2 to the response, submitted November 28, 1977, to your letter to Godwin Williams, Jr., dated November 18, 1977, concerning "Electrical Connector Assemblies."
Revision 2 is an addition to Part II, Section C in response to a verbal question from Dan McDonald. of your staff'n December 2, 1977.
Please get in touch with me if you have any questions regarding this subject.
Very truly yours, r
~ ~'l~pg( ( t q~~<.r~~
.~g J.
E. Gilleland Assistant Manager of Power Enclosure 773460104 An Bevel Opport"nity En;ployer
REVISION 2
RESPONSE
TO EDSON. G.
CASE LETTER TO GODWXN WlLLIAMS, JR.,
DATED NOVEMBER 18, 19777 Addition to Part II Section C
e 2 In addition to the isolation function provided by temperature sensors discussed above, the main steam, HPCI, and RCIC systems have excessive steam flow isolation logic.
This steam flow isolation provides complete diversity to ensure steam line isolation in the unlikely event of a postulated steam line rupture.
(The isolation functions of the main steam line, HPCI steam line, and RCIC steam line high flow sensors are described in the FSAR in section 7.3.4.7 (items 4., 8., and 11.) and in the response to NRC Question 7.33 dated May 22, 1971, on pages R.7.33-1 and.
R.7.33-2.)
The Amphenol electrical connectors associated with the main steam,
This designation indicates that these connectors comply to Military Specification, MIL-C-5015.
Section 4.5.3 of MIL-C-5015 references Method, 107, Condition B of Military Standard MIL-STD-202 for the thermal-shock test conditions for each connector-.-
A-range of -55 C (-67 F) to +125 C (257 F) is specified for the test temperature limits.
Thus, documentation of the 257 F 'design tempersture is identified for these Amphenol connectors.
REVISION 2
RESPONSE
TO EDSON; G.
CASE LETTER TO GODWIN WILLIAMS, JR.,
DATED NOVEMBER 18, 1977'I Addition to Part II Section C
e 2 In addition to the isolation function provided by temperature sensors discussed above, the main steam, HPCI, and RCIC systems have excessive steam flow isolation logic.
This steam flow isolation provides complete diversity to ensure steam line isolation*in the unlikely event of a postulated steam line rupture.
(The isolation functions of the main steam line, HPCI steam line, and. RCIC steam line high flow sensors are described in the FSAR in section 7.3.4.7 (items 4., 8., and 11.) and in the response to NRC Question 7.33 dated May 22, 1971, on pages R.7.33-1 and R.7.33-2.)
The Amphenol electrical connectors associated with the main steam,
This designation indicates that these connectors comply to Military Specification, MIL-C-5015.
Section 4.5.3 of MIL-C-5015 references Method 107, Condition B of Military Standard MXL-STD-202 for the thermal-shock tgst conditions for each connector.
A range of -55 C (-67 F) to +125 C (257 F) is specified for the test temperature limits.
Thus, documentation of the 257 F 'design temperature is identified for these Amphenol connectors.
REVISION 2
RESPONSE
TO EDSONl G.
CASE LETTER TO GODWIN WlLLIAMS, JR.,
DATED NOVEMBER 18, 1977'(
Addition to Part II Section C
e 2 In addition to the isolation function provided by temperature sensors discussed.
above, the main steam, HPCI, and RCIC systems have excessive steam flow isolation logic.
This steam flow isolation provides complete diversity to ensure steam line isolation in the unlikely event of a postulated steam line rupture.
(The isolation functions of the main steam line, HPCI steam line, and. RCIC steam line high flow sensors are described in the FSAR in section 7.3.4.7 (items 4., 8.,
and, 11.) and in the response to NRC Question 7.33 dated May 22, 1971, on pages R.7.33-1 and R.7.33-2.)
The Amphenol electrical connectors associated with the main steam,
This designation indicates that these connectors comply to Military Specification, MIL-C-5015.
Section 4.5.3 of MIL-C-5015 references Method. 107, Condition B of Military Standard MIL-STD-202 for the thermal-shock test conditions for each connector.
A range of -55 C (-67 F) to +125 C (257 F) is specified for the test temperature limits.
Thus, documentation of the 257 F 'design temperature is identified for these Amphenol connectors.