ML20002C042
| ML20002C042 | |
| Person / Time | |
|---|---|
| Site: | Haddam Neck, Millstone File:Connecticut Yankee Atomic Power Co icon.png |
| Issue date: | 12/30/1980 |
| From: | Counsil W CONNECTICUT YANKEE ATOMIC POWER CO., NORTHEAST NUCLEAR ENERGY CO. |
| To: | Crutchfield D Office of Nuclear Reactor Regulation |
| References | |
| A01260, A1260, NUDOCS 8101090012 | |
| Download: ML20002C042 (8) | |
Text
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December 30, 1980 Docket No. 50-213 50-245 A01260 Director of Nuclear Reactor Regulation Attn:
Mr. Dennis M. Crutchfield, Chief Operating Reactors Branch #5 U. S. Nuclear Regulatory Commission Washington, D.C.
20555
References:
(1)
D. L. Ziemann letter to W. G. Counsil dated January 1, 1980.
(2)
W. G. Counsil letter to D. L. Ziemann dated February 14, 1980.
(3)
W. G. Counsil letter to D. L. Ziemann dated March 14, 1980.
(4)
W. G. Counsil letter to D. M. Crutchfield dated June 30, 1980.
(Docket No. 50-245)
(5)
D. M. Crutchfield letter to W. G. Counsil dated July 28, 1980.
(6)
W. G. Counsil letter to D. M. Crutchfield dated August 5, 1980.
(Docket No. 50-213)
(7)
W. G. Counsil letter to D. M. Crutchfield dated August 27, 1980.
(8)
W. G. Counsil letter to D. M. Crutchfield dated November 21, 1980.
(Docket No. 50-213)
Centlemen:
Haddam Neck Plant Millstone Nuclear Power Station, Unit No.1 SEP - Anchorage and Support of Safety Related
~
Electrical Equipment The NRC Staf f requirements regarding the issue of anchorage and support of safety related electrical equipment were first identified in Reference (1).
Responses from Connecticut Yankee Atomic Power Company (CYAPCO) and Northeast Nuclear Energy Company (NNECO) were docketed in References (2), (3), (4), (6),
(7), and (8).
NRC requirements regarding submittal content and format were further specified by Reference (5).
In accordance with that request, Attachment 1, Summary of Investigation of Anchorage and Support of Safety Related Electrical Equipment, is hereby provided for the Haddam Neck Plant.
810 3 G 9 COID-
. l The supports of safety related electrical equipment of the type identified in to Reference (1) have been evaluated for seismic adequacy.
Cal-culations have been performed to demonstrate the adequacy of either the original support configurations or the modified support configurations as appropriate.
Components which have been or are being modified, as well as a description of the type of modifications performed, are identified in Attachment 1.
As pre-viously stated in Reference (8), CYAPCO anticipates completion of all required modifications by January 31, 1981. All modifications completed to date have been implemented in accordance with the provisions of 10CFR50.59.
Millstone Unit No. 1 is presently in the midst of an extended refueling outage.
Return to power is not expected prior to February,1981. NNECO expects to com-plete modifications resulting from the ongoing investigation of the anchorage and support of safety related electrical equipment prior to returning to full power opera tion.
In order to provide a complete summary of the results of the investigation of the anchorage and support of safety related electrical equipment, NNECO intends to forward information in a format similar to Attachment 1 prior to resuming full power operation.
Please advise if you require further clarification on the above information.
Very truly yours, CONNECTICUT YANKEE ATOMIC POWER COMPANY NORTHEAST NUCLEAR ENERGY COMPANY i
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W. G. Counsil Senior Vice President
Docket No. 50-213 ATTACHMENT 1
Haddam Neck Plant Sun: mary of Investigation of Anchorage and Support of Safety Related Electrical Equipment December 1980
4 ATTACHMENT I
SUMMARY
OF INVESTIGATT N OF ANCHORAGE AND SUPPORT OF SAFETY RELATED ELECTRICAL EQUIPMENT Typeof Any Modifications Type of Mods.
Modificatien Calculation Supporting Component location -
Anchorage To Original PeAformed to Duuting Mequacy of Existing Name Baddtng i Elevation Originally Existing Anchorage Requiredt Anchorag e NumbeA Anchorage or Modification 4160 Volt Diesel Genetator Bailding Welded to Channet Yes Mditiornit Weld 16103-34043 79-113-116 GM Switchgear Elev. 21'-6" Dieset Embedded in Concrete Added, New Ancher Sht. 42 Section E Bas 8
. GeneAator Room "I Floot Stab Botts Mded, Bucing Hembers Added 4160 Volt Dieset GeneAator Budd<.ng Welded to Channel Ves Mditional Weld 16103-34043 19-113-116 GM Switchgert Elev. 21'-6" Dieset Embedded in Concrete.
Added, New Anchot Sht. 42 Section E Bas 9 Genetator Room *2 Floor Stab Botts Mded, Stacing Hembers Mded 480 Volt SeAvice Badding Elevation Botted to Floor Stab Yes Additional Anchot 16103-54043 19-113-116 GM Switchgeat 41*-6" Switchgear Room Botts Mdest Sht. 43 Section C Bus 1-4 480 Volt Switchgear Bus 1-5 480 Volt Swltchgent Bas I-6 480 Volt Se,tvice Badding Elevation Botted to Floor Stab Ves Mditional Anchot 16103-34043 19-113-116 GM 2%itcigtat 41'-6" Swltchgear Room at Base Botts Added Sht. 43 Section C Bas 1-7 Motor Conttot Seteerseell Bldg. Elevation Bolted to Floot Stab Ves Additional Anchor 16103-34043 79-113-116 GM Centet *1 21*-6" at Base Botts Mded at Shts. 81 A, 818, Section G Stse - Ctacing 81C, 810 Added at Top
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- SE ATTACHMENT 1 SlHiARY CF INVESTIGATION OF ANCHCRAGE AND SUPPCRT OF SAFETY RELATED ELECTRICAL EQUIPMENT t
Type of Any Modificatans Type of Mods.
Modificatron Calculation Supporting Component Location -
Anchotage To Original Performed to Ducing Adequacy of Existing Name
%iMing i Elevation Originally Etisting Anchou3e Required?
Anchorag e NumbeA Anchorage or Modification Motor Conttol New and Spent Futt Bcited to Floor Stab Ves Mditicnal Anchor 16103-54043 19-113-116 GM Center *2 Baitdag Elevation at Base Botts Added at Shts. 84A, Section P ZI'-6" Base, Etacing 848 Mded at Tcp Motot Conttot Tatbine Bartkng Bolted to Sttuctatal Yes Stacing Mded 16103-54043 79-113-116 CM Centet *3 Elevation 35'-6" Stett at Base at Top of Unit Shts. 80A, Section K 808 Motot Conttol Setvice Building Botted to Ficot Stab Ves Mditional Anchot 16103-34043 79-113-116 GM Centet *5 Elevation 41'-6*
at Base Botts Added at Skt. 35 Section I Switchgest Room Base, Stacing Mded at Tcp Motor Conttot Service Building Bolted to Floot Stab Ves Mditional Anchot 16103-34043 19-113-116 GM Center 96 Elevation 41*-6" at Base Bolts Mded at Sht. 35 Section 1 Switchgeat Race Base, Stacing Mded at Tcp M32cr Conttol Cable Vault Elevation Botted to Floct Stab Ves Mditional A*chot 16103-54043 79-113-116 GM
- Center 01 21*-6" at Base Bolts Mded at Sht. 68 Section K Base, Stacing Mded at Tcp Motot Conttof Ptinty Auxiliary Botted to Floor Stab Ves Mditicnal Anchor 16103-34043 19-113-116 GM Center *8 Budding Elevation at Base Bolts Mded at Skts. STA, Section L 21*-6" Base, Stacing 828, 8 C, 870 Mded at Tcp 480 Volt Dieset Genetatot Botted to Cencrete No N/A N/A 19-113-116 GM A.C. Panet Building - Elevation Watt Secticn Q No. tA 21 *-6", Diesel Generatot Room *1
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b ATTACHMENT 1 SUMMARV 0F INVESTIGATION OF ANCHORAGE AND SUPPORT OF SAFETV RELATED ELECTRICAL EQUIFWINT Typeof Any Modifications Type of Mods.
Modificalan Calcatation Supporting Component location -
Anchorage To Original Perfotmed to Drawing Adequacy of Existing Mune Buildrng i Ele?ation Criain!1y Existina Anchorage Required?
Anchotage Neunber Anchorage or Modification 120 Volt Setvice Building Welded to Embedments Yes Staced Frarre 16103-54043 79-113-116 GM A.C. Panet Elevation 59'-6" at Base Added at Top Shts. 48A, Section R 488 DP-A Control Room 120 Volt A.C. Panel 9P-B 120 Volt A.C. Panet DP-C 120 Volt A.C. Panet OP-D 4160/480 Setvice Bartding flott Trans-Elevation 41 *-6" None Ves Added Botts 16103-34043 79-113-116 GM Th. tough Conetete Skt. 36 Sectior A fo.wer No. 5 Switchgest Room Floot Stab 4160/480 Volt Trans-foweit No. 6 125 Volt Setvice Building Anchot Botta Ves EntLie Rach 16703-34043 79-II3-Il6 GM Station Elevation 41*-6" to Floor Stab Replaced -
Shts. 44, 45, Section M New Anchot 46 Sattery Switchgear Room Botts Added Rack-1A 16103-54043 79-113-116 GM 185 Volt Shts. 44, 46, Section N Station 47 Battery Rack 18
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ATTACHMEMT I St2 4RY CF I WESTIGATION CF ANCHCRAGE AND SUPPORT CF SAFETV RELATED ELECTRICAL E_qu1FMENT Type of Any Mad < fications Type of Mods.
Modification Calculation Suppoding Componed Location -
Anchotage To Original Perfo wed to Dudng Adequacy of Ethting kant Bartding 6 Elevation OriginaUa Existing Anchon13e Requhed?
Anchou3 e Numbe.t Ancho.tage or Modificaticn 125 Valt Service Building Nare Yes Bucing Added 16103-34043 79-113-116 GM 0.C. to 120 Elevaticn 41'-6" to Esis ting Skt. 37 Section C UcEt A.C.
Switchgeat Room Fiame - Neat invette.t A Anchor Botta Addeli 125 Volt 0.C.
to 120 Volt A.C. Inue.tter B
125 Volt 0.C.
to 129 Vol.t A.C. Invester C
125 Volt 0.C.
to 120 Volt A.C. Investet 0
125 Velt 0.C.
Service Building Anchot Botts to Ves Additional Anchot 16103-34043 79-113-116 GM Sattety Chatget Etentien 41*-6" Flocr Stab Botts Added Sht. 41 Section B BC-1A Switchgeat Room 125 Volt 0.C.
Batte.ty Chayet BC-18 Autitiaty Setvice Bartdutg Anchor Golts to Yes 16103-34023 19-113-116 GM Control Panels Elevation 59*-6" Flcot Stab Sht. 23 Szcticn T Centtot Room
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