ML21286A296

Amendment 29 to Updated Final Safety Analysis Report, Chapter 4, Table 4.2, Reactor Pressure Vessel Materials

ML21286A296
Person / Time
Site:	Browns Ferry
Issue date:	10/04/2021
From:	Tennessee Valley Authority
To:	Office of Nuclear Reactor Regulation
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Text

BFN-26 TABLE 4.2-1 REACTOR PRESSURE VESSEL MATERIALS Component Form Material *Spec. (ASTM/ASME)

Heads, Shell ...................... rolled plate low-allow steel SA-302 B cc 1339 Closure Flange .................. forged rings low-alloy steel A-508 CL 2 cc 1332-2 Cladding ............................ weld overlay austenitic SA-371 type ER309-type stainless steel ER308 (and carbon content

-inconel <0.08 w/o)-Inconel 82 and 182 Nozzles.............................. forged shapes low-alloy steel A-508-CL2 cc 1332-2 Control Rod Drive .............. forged tubes Inconel SB-166 cc 1336 Stub Tubes Control Rod Drive .............. pipe austenitic --

Housings stainless steel In-Core Housings .............. pipe austenitic --

stainless steel Vessel Supports- ............... rolled plate low-alloy steel SA-302 Gr.B External Shroud Support- ................ forging Inconel SB-168 Annealed cc 1336 Internal Nozzle Safe Thermal ......... pipe austenitic SA-312 TP.304 Sleeves stainless steel Nozzle Safe Ends .............. forging austenitic SA-336-F8/F8M stainless steel and some low-carbon SA-105-2 cc 1332-1 steel Nozzle for Instrument ........ forging Inconel SB-166 cc 1336 para. 1 Penetrations

• cc - Code Case that modifies/augments the material specification.

BFN-26 Table 4.2-2 Table 4.2-3 REACTOR VESSEL DATA REACTOR VESSEL ATTACHMENTS Reactor Vessel Qty.

Inside Diameter, in. (min.) ..............................251 3/8 in. Internal Attachments Inside Length ............................................ 73 ft 11-1/2 in. Guide Rod Bracket ......................................... 2 Design Pressure and Temperature, Steam Dryer Support Bracket ......................... 4 psig @ °F ................................................... 1250 @ 575 Dryer Holddown Bracket ................................. 4 Feedwater Sparger Bracket .......................... 12 Vessel Nozzles (number and size) Jet Pump Riser Support Pads....................... 20 Recirculation Outlet ................................2-36 in. to 28 in. Jet Pump Diffuser Bracket ............................ 20 Steam Outlet ....................................................... 4-26 in. Core Spray Bracket ........................................ 4 Recirculation Inlet ............................................. 10-12 in.

Feedwater Inlet................................................... 6-12 in. External Attachments Core Spray Inlet ................................................. 2-10 in. Stabilizer Bracket ............................................ 8 Instrument (one of these is Head Spray)** ......... 2- 6 in. Top Head Lifting Lug....................................... 4 Control Rod Drive ............................................. 185- 6 in. Insulation Supports ......................................... 2 Jet Pump Instrumentation..................................... 2- 4 in. Insulation Support Brackets ...... 12 ea; 2 places Vent ...................................................................... 1- 4 in. Thermocouple Pad ....................................... 36 Instrumentation ..................................................... 6- 2 in.

Control Rod Drive Hydraulic System Return * ...... 1- 4 in.

Core Differential Pressure and Liquid Control ...... 1- 2 in.

Drain ..................................................................... 1- 2 in.

In-Core Flux Instrumentation .............................. 55- 2 in.

Head Seal Leak Detection .................................... 2- 1 in.

Approximate Weights (in pounds)

Bottom Head ...................................................... 207,500 Vessel Shell........................................................ 842,000 Vessel Flange..................................................... 106,000 Support Skirt......................................................... 28,000 Other Vessel Components ................................... 65,500 Total Vessel without Top Head........................ 1,249,000 Top Head1 .......................................................... 252,000 Total Vessel..................................................... 1,501,000 1

This weight includes 60,095 lbs. which is the weight of the reactor pressure vessel studs, nuts and washers.

• CRD Return Line nozzle is capped.

• • Unit 1, 2, and 3 head spray nozzle line is capped.