ML20129D365

General Description of once-through Steam Generator

ML20129D365
Person / Time
Site:	Davis Besse
Issue date:	08/31/1973
From:	TOLEDO EDISON CO.
To:
References
NUDOCS 8507300006
Download: ML20129D365 (3)

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,,$ _e SECTI N 1 GEhTLAL DESCRIPTION i

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.1.1 General Data Dimensions, s Reicht:

Bottom of Sliding Support Base Plate 77 ft.

to Top of Inlet Kozzle Voirbts:

Shipping 570 tons Flooded 752 tons Operating (15%loadload)) 638 tons Operating (100% 654 tons Primary Manvey Caers (2) , 1028 lb each Secondary Manvey Covers (2 , 434 lb each Primary Inspection Covers 2) 75 lb each Seoondary Handhole Covers 9) 35 lb each Pressures: Desten Full kad Ooeratine Hydrotest Primary 2500 psig 2220 psia 3125 psig .

Steam Outlet 1050 peig 925 psia 1312 5 psig' Feedvater 1100 peig Primary Drop 33 psi

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Temeratures (OF) } jag Full Icad Operatine Hvdrotest (min)

(Shell Tenp.)

Primary 650 608 Inlet 100 Secondary 600 570 130 Feedvater 600 47,0 Ooeratine Limits and Preca0tions ,

Min. Pressurization Temperature 100F (Primary),130F (Sec.

Max.Heatup/CooldownRate 100 F/hr Min. Annulus Water Temp. 10 F below saturation Pressure (max.) hydrotest pressures Notes Prior to operating this unit, consult Plant Operating &

Maintenance Procedures prepared by owner (based on Draft Procedures prepared by B&W).

. Doerating Conditions (Pull Icad)

Heat Transfer 4.75x1 BTU /hr

• Primary Fluid Flov 68.95x10 lb/hr Steam nov 6.12x10 lb/hr 8507300006 730831

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p FActuTY ENGINEERING MAR 201983 August 197J BW 620-0014-55' 1-1 RECEIVED meu awa -

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i Heat Transfer Tubee 15,457 Number Material Inconel * )I Sise 0.625"0.D. , 0.034" vall, 56',

i 2-3/8" long, with 52' 1-3/8"

- heating length l

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Total Heating Area . 131,806 ft2 Onen h as. Nozzles and Penetrations (See Fig. 8 - 1) l

- Primary Inlet Nossle (1) 36" I.D.

Primary Outlet Nossles (2) 28" I.D.

Steam Outlet Nossles (2) 24" 0.D.

Feedwater Inlet Nossles (32) 3" I.D. B1 2

Auxiliary Feedvater Nossle (1) 5" I.D. ( CAPPED )

j Shell Drains (2) Above Iover Tubesheet 1" dia.

1 (4) At Lower Tubesheet 1)in.  :

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(2) At Handholes Above Feedvater 1)in.

i Header,1808 apart

! Level Sensing Connections,1" I.D., 280 toward W axis'from Z axis,'

1800 apart 4

I Inver Iow Levels (2) 20" below datum line.

4, i Upper Imv Levels (2) 6'-4" above datum line. j l

Spare (capped) : (2) 20' 11-11/16" above datum line.

High Level  : (2) 30' 8-1/8" above datum line.

l Auxiliary Feedwater Nozzles (8) 3" I. D. l l

' Temp 1) (erature1) " Sensing ConnectionI.D., 34' toward Y axis from I axis,14 i below datus.

! (2) 1)" I.D. 23'-8-11/16" above datum.

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Vent and Invel Sensing,1)" I.D. in upper tubesheet transition i bevel, between I and Y axes.

! Manwa 16 "

i Prima andt 1 7botton $na(k)on I axis.I.D., in top head on Y axis Secondary Manways (2) 16 " I.D. on I axis near the tubesheets.

Primary Inspection Openings (2) 5" I.D. W axis of top head; between I-w axis of bottom head.

t Secondary handholes (9) 5" I.D. upper 2, 30' 11-11/16" datum line, lover 7, on datum line Primary Drain (1) 1" I.D., dead center lower head. -

' 'Inconel is the trade name of a Ni-Cr-Fo alloy manufactured by the International Nickel Co. and used as a generio term throughout the industry to denote similar alloys instead of a specific manufacturer. ,,

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RIMARY INLET N0ZZLE

," C'AP & LIITING LUG j PRIMARI SIDE MANWAY 0, ,

INSPECTION CiPEVING VENT & IIVEL SENSING CONNECTION UPPER TUBE SHEET

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AUIILIARY FEEDWATIR INLET N

-g WSECONDARY SIDE MANWAY 11 CON?ECTION (CAPPED) g-J s F STRAIGHT TUBES ELLIPTICAL MANWAY IN

= 1  %. CYLINDRICAL BAFFLE IEA ER C. TUBE SUPPORT PLATE SPACER (TYP)

OUM EZZE l ._:: UPPER CYLINDRICAL VERTICAL EAFILE c a SD SIN N ~CT ON

,: DRAIN CDNNECTIONS FEEDWATER HEADER & -

INLET CDNNECTIO!G  :  :

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FEEDWATER IEADfR S'UPIORTS TEMPERATUPS SENSING -

00Nrt.,CTION IDUER CYLINDRICAL VERTICAL sd . BAFFLE

) = TUBE SUPPORT PLATES (TIP)

IDWER HIGH LEVEL SENSING CONNECTION g y FEEDWATER IEATING CHAMBER-t n UPPER IDW LEVEL SENSING CONNECTION - a .

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VATER PORTS ORI M PLATE [,h, _yDRAIN CONNECTION h - --

SECDNDARY SIDE HANDIDLES%fL SECDNDARY SIDE l#JNAY IDWER IDW LEVEL SENSING # r 'T TEMPERATURE SENSING CONNECTION ON DRAIN OGNNECTIONS IDWER TUBE SHEET C

b PRIMARY SIDE INSPECTIO!! OPDIING PRIMARY OUTLET !DZZLE PRIMARY SIDE MAINAY SUPPORT SKIRT = DRAIN (DNNECTION -

SLIDING SUPPORT d-Un

• PIGGE 1-1 ONCE TIE 0 UGH STEAM GUlIRATCR FACll.lTY ENGINEERING B&W 6:0-0014-55 . v MAR 2 b im #

RECEIVED ,

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