ML19343D353

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Seismic Snubber Lug Info.
ML19343D353
Person / Time
Site: Arkansas Nuclear Entergy icon.png
Issue date: 01/30/1981
From: Garbe H
GENERAL ELECTRIC CO.
To:
Shared Package
ML19343D342 List:
References
34A181525, NUDOCS 8105040333
Download: ML19343D353 (16)
v • d • e


Text

'

'34A181525' GENERAL @ ELECTRIC .

i,L TITI.E SEISMIC SNUBBER LUG INFORMATION Enclosure (4).to 7 4A181525 .

__ ..A-CE-7899 come om saco su ao. FIRST MADE FOR RCP MOTOR MODEL 264 X 742 RMSIONS RCP Motor Rated K-V-8-6750 HP-900-6600 V Model 264 X 742 ~

Req. 480-41078 (1971) ._; ,,

Byron Jackson / Combustion Engineering -

TFor' A'rkansas Power & Light Company -

Arkansas Nuclear One, Unit 2

~

1. Motor Outline Drawing - 816E310
2. Motor Outline Notes . 816E310AB
3. Seismic Snubber Lug 158C3919-1
4. Material Specification b50A357-58.Pages 1-11
5. Sample certificate of Test for Stect Plate .

Purchased to B50A357 Specifications 34A181526

6. Mounting of Seismic Snubber Lugs 193B1970 '

Each seismic lug is bc1ted and doweled to the top plate of the motor end shield as shown on 193B1970. The component materials identified are:

Part 1 End Shield,1 per Motor, B50A357 Steel Plate Located by Rabbet Fit and Bolted to Stator Frame Part 2 Seismic L6g, 2 per Motor, B50A357 Steel Plate .

Part 3 Dowel,1" Dia. X 5 " Long, 6 Dowels per Lug,

. B4A2C3 Steel (ATSI 1018 Chemistry)

Part 4 Stud,1 " Dia. X 21" Long Threaded 1 "-6 X 4 " Each End 2 Studs per Lug, B4A2F Steel (AISI M1020) l Part 5 Hex Nut, 1 " - 6, One Nut For Each Stud l C2L1 (Standard Low Carbon Steel Nuts) l Part 6 Bolt, 1 "-6 X 10 " Long, 4 Bolts per Lug CICSB Steel (ASTM A-449, Grade 5) ,

Note: The data and drawings are provided for information per requisition 301-6011t. *

(Ref. W. G. Scott , CE, letter 9/12/80, and J. E. Hinrichs, GE Quotation 1etter 11/14/80)

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3o GENERAL ELECTRIC CO.

Co^ftsv:tt .PA 1'320 . ,

man O TEST CERTI.:iCATE

,LG. GEN. 1 It'I R. DEPT. .'

LAC Ut!G. SECT. m tt oaota 8 o. custouta r.o.

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SCilEi!ECTADY N. Y.

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].E. n",0 A357 -A-S3 69 BEND TEST C . K . HOMOGENEITY TEST CHEMICALANALYSIS Ni Cir Mo V Tr At 8 C ., M4 P a S Cu St g MELT NO.

.75 .001 .022 .21 D2799 .14 g/ /

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PHYSICAL PROPERTIES

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DESCRIPTION MELT NO.

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a 473 32 l l 2- 10-1/2 X 05 X 101 -

b D2799 1 425 '

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i PLATES'A1D TEG rs NOR4. 162ti F./3 475 F. A!!!.med and subscrib::d br.'et:: tr.3 AND AIR l'OOLED . . ,.

' this. d2y of AER 9. 1976 .

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  • UdI5' ACCE PTE l 88p , ,

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QUtLITY CONTR0(.  ! .

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3Ye hereby_ccrtify_tho_oboyojnformat. ion _is..conect.

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GEllER AL @ ELECTRIC gl(oE3lo AB i O ,

TITR EXPLANATORY NOTES .

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ew .. i.cn s ... rlRST MADE FOR K-V -8 //150H P-900 RPM-6600V D L-2Fr O26 1

REYlSION: l

1. TO REMOVE THRUST BEARING , INSERT BLOCKING UNDER MOTOR SHAFT EXTENS 10N TO SUPPORT ROTOR AND PREVENT ROTOR- FROM OROPPING. . I
2. P.0LDING DOW14 BOLTS DOWEL PMS AtlD COOPLMG .- 3

_ .. BOLTS M'E. MOT SUPPLE.D EW GE NER AL ELECT R \C CO-HOLO DOWM BOLTS TO BE AST M A4 4 9 S AE. __ __

GRADE 5.3 WM, Y1 ELD 9 0 p O O 7.S.I, _ _ _ _ _ _ . . _.

+ 3 '. THE UPPER GUIDE BEARING AND THE THRUST BEARINGS ARE INSULATED TO PREVENT DAMAGE TO THE JOURNAL OR BEARING SURFACES-FROM FLOW OF ELECTRICAL (SHAFT) CURRENT BETWEEN THE SHAFT AND

. , STRUCTURAL MEMBERS SUPPORT ING THE BEARINGS. ANY P.ETALLIC CONNECT 10N TO THESE BEARINGS OR TO THE SHAFT ON THE UPPER .

END OF THE MOTOR MUST ALSO INCLUDE INSULATION TO AVO_l0 AL- e .J[

TERNATE PATHS FOR SHAFT CURRENTS. . o ' cr k ,G, 4 FOR CCW ROTATION FACING THE TOP END OF MOTOR CONNECT LINES TO

. .GIVE MOTOR PHASE SEQUENCE IN THE ORDER OF T 1, T2, & T3 $es' b BOTTOM OF MOTOR 15 WIND ING CONNECT ION END.

5. THE MOTOR IS CONNECTED WYE FOR 6600 VOLTS BY CONNELTING T4, *l i ) Q TS & T6 TO FORM NEUTRAL. 'N 134,500 LB.TT DESIGN MINIMUM k. 4 1

- t->- 6 WK 2 0F MOTOR'PL'US FLYWHEEL ##

135pCO LB FT 2 CALCULATE.D

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7. AMBIENT AIR TEMPERATURE 49# C, M AX. RELATIVE HUMIDITY 0 TO q. ed 100%, RAD l AT ION LEVEL 30 R/HR, PR I N.C 1 PALLY G AMMA . ,

8 TOTAL END PLAY IN THRUST BEARINGS IS 015 +_ .00 AS RECOM- .f MENDED BY KINGSBURY INC. DI AMETRICAL CLEARA'b 0F GUIDE My BEARINGS TO BE 007" TO .011". s '. i 4

9. OIL RCOUIR7_MENTS ( FCF? TECOMMEN'D A'TIONs sF.t 226 A4212. '

2,g7,? t EXT 5PT.th.C WC'"S. OR S LITPEYy A 'D.b1TN G.S N O T Alt.OWiEh l UPPER CIL PEGER V OITg SO GAL. ~ ~~

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.W - Putss CWop - 20 PSI I N C l.. ORIFICCS IN MOTOR i:l P l N C,.

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SCHENECTA0Y tome.

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, 1 B50A357-S8, November 24, 1969 l

. . GENERAL ELECTRIC COMPANY Supersedes; l . _ _ . SPECIFICATION ,, .

, B50A357-S7"

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. WELDING QUALITY STEEL PLATE - - -

GE Material B50A357 identifies steel plate, intended for welding as follows:

B50A357A -

Sheared edge, physical base (normalized in thickness

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over 4 inch)

B50A357A2- -

Sheared edge, physical base, thickness o<er 4 inch, Y" B50A357B not normalized (for fabrication by hot forming)

Universal edge, physical base (normalize _d'in, thicknes s over 4 irich) "

B50A357B2 -

Universal edge, physical base, thickness o.ver 4 inch, not normalized (for fabrication by hot forming)

~

,' B50A35'7 C - Circular plate with center test requireme.nts '

(normalized in thickness over 4 inch)

B50A357 F -

Slabs, physical base (normalized in thickness over 4 inch)

B50A357F2 - Slabs, physical base, thickness over 4 inch not normalized (for fabrication by hot forming)

CHEMICAL COMPOSITION: % (Ladle analysis)

Y Carbon, max:

Up to 1 1/ 2 inch thick inci - - - - - - - - - - - - -

. ' 0.22

. Over 1 1/2 to 2 inch thick inci - - - - - - - - - - - - - - - - - 0.21 Ove r 2 to 4 inch thick inci - - - - - - - - - - - - - - - - - - - - 0.23 Ove r 4 to 8 inch thick inci - - - - - - - - - - - - - - - - - - - - 0.25 Ove r 8 to 12 inch thick inci - - - - - - - - - - - - - - - - - - - 0.27.

. Manganese:

Up to 1 1-/2 inch thick inci ------------------- 0.30-0.60 Over.1 1/2 to 12 inch thick inci ---------------- 0.60-0.90 Phosphorus, max --------------------------- 0.04 -

Sdfur, max------------------------------- 0.05 Silic on:

Up to 1 1/ 2 inch thick inc1 - - - - - - - - - - - - - - - - - - - - -

.Y F

Over 1 1/2 to 12 inch thick inci ----------- ---- 0.15-0.30 The ladle analysis made by the manufacturer to determine the percentages j of the elements required under this specification shall be reported to .

the purchaser or his representative in a certificate of test herein spe cified. .

A check analysis may be mada by the purchaser from a sample representing-each melt. The chemical composition thus determine.d.shall conform to j

the requirements of this specification within the AIS1 standa d permissible -

variations for check analysis.

It is desired that the manufacturer aim at a chemistry such that the carbon ,

equivalent (i. e. , C + 1/4 Mn +' 1/4 Si) be maintained at 0.45 or below. *

~

I (Continued on P ,

Enclosure (4) to 09. 6 of 15

. ~o . . , l

. . . j B50AJ 57 -SS , .

paga 7. . .. -

MECHANICAL PROPERTIES: ,

a Up to 1 1/2 in. thk. incl.

Over.1 1/2 in. thk.

.h*

ensile strength, psi, min i 50,000 55,000 Yield point, psi, min 30,000

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27,000~ .

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Elongation in 8 inch,%, min (1)(3) __ ,.23 , , , n. , ,23 ,.. ..

Elongation in 2 inch,%, min (2)(3) ~ 27 27 I.4end test - The bend test specimens shall stand being bent cold through 180 degrees without cracking on the outside portion to an inside diameter which shall have the following relation to the thickness of the specimen. M.

. y

, Thickness, inch Ratio of inside diameter of bend Over To inc1 to thickness of specimen 1 Flat on itself '

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11/2

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1 ~3/4 2--

1 1/2 2 .

1 2, 3 1 1"/ 2 -

3 4 2 4 21/2 (1) For material under 5/16 inch in thickness, a deduction from the .

percentage of elongation in 8 inch specified in the table above, of 1.25 percent shall be rude for each decrease of 1/32 inch of the specified thickness below 5/16 inch.

n For material over 3/4 inch in thickness,.a deduction from the percentage of elongation in 8 inch specified in the table above, of 0.50 percent -

shall be made for each increase of 1/8 inch of the specified thickness a'bove 3/4 inch. This deduction shall not exceed 3 percent.

(2) For material over 31/2 inch in thickness, a deduction from the percentage of elongation in 2 inch specified in the table above, of 0.50 percent shall be made for each increase of 1/2 inch of specified thickness above 31/2 inch. The deduction shall not exceed 3 percent.

(3) A 1% reduction in the percentage of elongation requirements is allowable on transverse test specirnens.

MANUFA CT URE: .

Process - Shall be made by either the open hearth, electric furnace, or a basic oxygen furnace proce ss.

Defects - The material shall be free from injurious defects and shall have a workmanlike finish. For slabs, defects resulting from shear drag or otherwise shall not extend more than 3 inches in from an end.

Finlah - Far slabs, a uniformly corrugated surface with grooves not exceeding a depth of 0.060 inch is acceptable. , _ , , ,

P00R ORIGI E "

(Continued ,on Page 3)

~ Enclosure (4) to pg. 7 of 16

- c B50A357- SS Page 3 MANUFACTURE: (Cont'd), '

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. , Heat Treatment -

- B50A357A, B, C, and F - Plates over 4 inch in thickness shall be uniform 13 normalized to produce grain refinement. Heat treatment involving quenching in a liquid medium is not permitted.

B50A357A2, B2 and F2 - Plates over 4 inch in thickness will be accepted on the basis of mill tests made on specimens that have been normalized to produce grain refinement and to meet the test requirements. This heat treatment shall be reported with the test results in the. certificate ' !

~

D - of test herein specified. -

% e#"

t TEST SPECIMENS:

B50A357A, A2, B, B2, F and F2 ' Longitudinal test specimens shall be

- prepared from the material in its rolled or normalized condition as the ,

case may be, or from full thickness samples similarly and simultaneously

~

normalized. The tensile bars shall represent the full thickness of the  !

material or, in plate over 1 1/2 inch in thickness, they may conform to !

standard 2-inch gage length round test specimens and be removed midway' between one rolled surface and the center of the plate.

The bend bars shall epresent the full thickne_ss of the plate except where the thickness exceeds 1 1/2 inches, in which case a 3/4-inch thick bar or a 1 by 1/2 inch cross section bar may be prepared. When f

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the bend specimen has a reduced thickness, the rolled surface shall be on the outer curve of the bend.

Two tension and two bend tests shall be made from each heat unless ,

the finished material from a heat is less than 30 tons when one tension and one bend test will be sufficient. However, for material 2 inch and under in thickness, if the material from one heat differs 3/8 inch or more in thickness, one tension test and one bend test shall be made from both the thickest and thinnest material rolled regardless of the weight represented. For material over 2 inch in thickness, if the j

material from one heat differs 1 inch or more in thickness, one tension l .

and one bend test shall be made for each 1-inch gage grouping regardless ,

l of the weight represented.

l B50A357C - A longitudinal and a transverse tensile specimen shall be ,

l , prepared from each plate in its rolled or normalized condition as the '

case may be. These specimens shall be taken from a small (24-inch maximum diameter) slug of material removed from the center of the.

, plate area. They shall be standard 2-inch gage length test bars re-l moved midway between one rolled surface and the midthickness of the j slug, or 1/4 the thickness from a rolled surface. The longitudinal l specimen shall be taken parallel to the direction of rolling and the transverse specimen perpendicular to the direction of rolling.

Bend tests are not required.

l*

l P00R ORIGINAL (Continued on Page 4) i Enclosure (4) to on. 3 of 16 _

~

. B'5 0A 357 - 58 ,

~

Page 4 ,

IDENTIFICATION: *

. Plates:

Unless otherwise specified on the purchase' order, plates over 3/8 inch in thickness and all plates over 36 inch in width or any plate shipped . -

loose shall be marked, stenciled or steel die stamped.with the heat or slab numbers and the manufacturer's name, brand or trademark. ~

. For plates shipped in secured lifts in the sizes expected above,' either the top plate of the lift or an attached tag shall be marked as required ab ov e. -- - - - -

Slab s:  :

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Each slab shall be legibly marked with the purchase order number, the heat number, the manufacturer's name and the GE Material designation.

REFEREE METHODS:

T e n sion te s t - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A STM E8 Bend test ----------------,----------------GEESB5 Chemical composition - - - - - - - - - - - - - - - - - - - - - - - - - ASTM E30

' TOLERANCES: -

Plate: '

' Width: Over 1 1/2 inch thick (B50A357A and A2)(Gas cut rectangular platis)

Specified thickness, inch Specified weights, T ole rance, inch, C Incl To exc1 lb per sq ft plus only (4)

- 2 To 81.6 exc1 1/2 2 4 81.6 to 163.2 exc1 5/8 4 6 163.2 to 244.8 exc1 3/4 _

6 8 244.8 to 326.4 exc1 7/8 8 -

15 inc1 326.4 to 612.0 inc1 1 (4) Tolerance may be taken all under or divided over and under, if so l specified on the purchase order. , ,

l 4

D..

l

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I (Continued on Page 5)

Enclosure (4) to pg. 9 of 16

TOLERANCES: (cont'd) .

. B50A357- S 8 Platz: (cont'd)

Paga 5 Thickness and weight per lot when ordered to thickness: (5)(6)(7)(8)(9)(10)

Permissible excess in average weights of lots expressed in percentaces of nominal weit: hts Thick'- Width, . Up to Over 60- 'l2 - 84- 96- 168- 120- 132- 144- 168 nes.4, Inch nch 48 48-60 72 84 96 108 120 132 144 168 and g Inci To excl inct exc1 excl excl excl excl excl excl exc! excl over 1/4 6.0 7.0 8.0 8.5 10.5 12.0 14.0 16.0 18.5 - -

1/4 5/16 6.0 6.0 7.0 8.0 8.5 10.5 12.0 .14.0 16.5 19.5 - .

5/16 3/8 5.0 6.0 6.0 7.0 8.0 8.5 '10.5 '12.0 '15.0 17.0 -

l 3/3 7/16 4.5 5.0 6.0 6.0 7.0 8.0 8.5 10.5 13.0 15.0 17.0

'f716 1/2 4.0 4.5 5.0 6.0 - 6.0 -7.0 8.0 8.5 11.0 13.0 15.0 i 1/2 5/8 4.0 4.0 4.5 5.0 - 6.0 6.0 7.0 8.0 9.5 11.0 13.0 N . 5/6 3/4 4.0 4.0 4.0 4.5 5.0 6.0 6.0 7.0 8.0 9.0 11.0 1

3/4 1 2

3.5 3.5 4.0 3.5 4.0 4.0 4.0 4.0 4.5 4.0 5.0 4.5 6.0 5.0 6.0 6.0 7.0 6.0 8.0 7.0 9.5 8.0

' f' 3

2 3 3.5 3.5 3.5 4.0 - 4.0 4.5 5.0 ' 6. 0 6.0 6.5 7.0 3 4 3.5 3.5 3.5 3.5 4.0 4.0 4.0 4.0 4.0 4.5 5.0 l 4 6 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.5 4.0_ -l 3.0 3,0 3.0 3.0 3.5 '

6 8 3.0 3.0 3.0 3.0 3.0 3.0 8 10 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.5  ;

10 12 2.5 2.5 3. 0' 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 j

~2 15 inct 2.5 2.5 2.5 2.5 3.0 3.0 3.0 3.0 3.0 3.0 3.0 -

(5) Tolerance under specified thickness, 0.01 inch.

(6) Tolerances for overweight for single plates are 11/3 times the amounts in the above table.

(7) Tolerances for overweight for lots of circular and sketch plates are 11/4 times the amounts in the above table. -

.(8) Tolerances for overweight for a single circular plate and a single sketch plate are 12/3 times the amounts in the above table.

,' (9) The term lot means all the plates of each tabular width and thickness group represented in each shipment.

(10) Nominal weight in pounds equals specified length in inches multiplied by specified width in

  • inches multiplied by specified thickness in inches multiplied by 0.2833. The adopted standard density for rolled steel is 0.2833 pound per cubic inch.

Width: (B50A3573 and B2) (11)

Thickness,l. Tolerance, inch. p;us cnly a inch To 3/8 3/8-5/8 5/8-1 1-2 Over 2-10 Over 10-15 g Specified exc1 excl excl inct inct inci .

width, inch To 15.3 15.3-25.5 25.5-40.8 l 40.8-81.6 Over 61.6-408.0 Over 408.0-612.0 Incl To excl ps!excl psfexcl psi excl I psf incl psf inci psf inct 20 1/8 1/8 3/16 1/4 3/8 1/2 20 36 3/16 1/4 5/16 3/8 7/16 9/16 36 -

5/16 3/8 7/16 1/2 9/16 5/8 (11) Permissible tolerance under specified width,1/8 inch. .

Camber Type of Specified weight, Dimension, inch i Permissible camber for manufacture psf Wioth Thickness I thickness and width given. max D50A357A,A2, To 816 inc! All 2 or under **II'" N 1/8 inch x 5 j B and B2 B50A357B and B2 81.6-612.0 inci 30 or under Over 2-15 3/16 inch x total lec q 5  ;

inc!

81.6-612.0 inc1 Over 30-60 Over 2-15 1/4 inch xl

'*I I*"N # .

inct inc! nn in A fil n I kl RE I TU JK UnibilML (Continued on Page 6) -

- _Jnclosure_(4) tn nq. 1l of__16

. . - - . - - - - -i, B50A357-S8 . .

Pagm 6 , ,

TOLEIV.NCES: (cont'd) -

Plate: (cont'd)

Width: (12) up to 11/2 inch thick inct (B50A357A and A2) (Sheared)

. Tolcrance, anch, plus only Spectfied tnickness, To 3/8 3/8-5/8 5/8-1 1-11/2 Specified width, h excl exc1 excl inct

  • inch Length, To 3 5.3 15.3-25.5 25.5-40.8. 40.8-81.6 From To excl inch pr.! exc1 psf excl psf exc1' psf inci 60 Up to 3/8 ' 7/16 1/2 5/8 60 84 120 7/16 1/2 5/8 ~ . . . 3/4 84 108

~

excl 1/2 5/b 3/4 1 108 5/8 3/4 7/8 11/8 60 3/8 1/2 5/8 #

3/4 60 84 1/2 5/8 3/4 7/8 U 84 108 9/16 11/16 13/16. I 108 excl 5/8 3/4 7/8 11/8 60 3/8 1/2 5/8 3/4 60 240-84 1/2 5/8 3/4 7/8 108 -

360 84 9/16 11/16 7/8 1 a ct 108 -

11/16 7/8 1 11/4 60 7/16 1/2 5/8 3/4 60 360-84 1/2 58 3/4 7/8 480 84 108 9/16 4 7/8 1

  • CI 108 -

3/4 7/8 1 11/4

- 60 7/16 1/2 5/8 3/4 .

4 60 84 1/2 5/8 3/4 7/8 600 84 108 5/8 3/4 7/8 1 108 excl 3/4 '

7/8 1 11/4 60 60 E4 600-720 1/2 5/8 5/8 3/4 3/4 7/8 1 7/8 6 84 108 5/8 3/4 7/8 11/8 108 excl.

7/8 1 11/8 11/4

- 60 9/16 3/4 7/8 1 720 60 84 3/4 7/8 1 11/8 and 84 108 3/4 7/8 1 11/4 108 1 11/8 11/4 13/8 (12) Permissible tolerance under specified width,1/4 inch.

(Continued on page 7 - -

v e

W Encisoure (4) to pg. 11 of 16

. D50A357-S8

. Page 7 TOLERAh*CES: (cont'd) .

Plate: (cont'd) *

~

Weight per lot when ordered to weight: (13) (14)(15) (16)(17) -.

Tolerances for average weights of lots for widtns given in inches, Specified erpressed in percent:r. es of the specified weic; hts per square foot weight, 48 and 43 excl to 6R2 72-84 -

84-96

  • 96-108  :

psi under 60,excl excl exc1 excl excl Over Under i Over - Under i Over iUnder i Over i Uncer i Over : Under Over i Under To 10 excl 4.0 3.0 4. 5 3.0 5.0 3.0 5.5 3.0 - 6.0 3.0 - 7.5 3.0 i 10 to 12.5 excl 4. 0 3.0 4.5 3. 0 4. 5' 3.0 5.0 3.0 :5.5 3.0 . 6.5 3.0 l 12.5 to 15.0 'excl 4.0 3.0 4.0 3.0 4.5 3.0 4.5 3.0 5.0 3.0 5.5 3.0 l 3 15 to 17.5 exc1 3.5 3.0 3.5 3.0 4.0 3.0 4.5 l 3.0 4.5 3.0 5.0 3.0 a> 17.5 to 20 excl .5-2.5 3.5 2.5 3.5 3.0 4.0 3.0 4.5 ~3.0 4.5 3.0 20 to 25 exc1 d.5 2.5 3.5 2.5 3.5 3.0 3.5 ' 3. 0 ' . 4.0~ 3.0 - 4.0 3.0 25 to 30 excl 3.0 2.5 3.5 2.5 3.5 2.5 3.5 3.0 3.5 3.0 . 3.5 3.0 30 to 40 exc! 3.0 2.0 3.0 2.0 3.0 2.0 3.0 2.0 3.5 2.0 3.5 2.5 40 to 81.6 excl 2.5 2.0 3.0 2.0 3.0 2.0 3.0

  • 2.0 3.5 2.0 3.5 2.0 81.6 to 122.4 exc1 2.5 2.0 3.0 2.0 3.0 2.0 3.0 2.0 3.5 2.0 3.5 2.0 122.4 to 163.2 exc1 2.5 1.5 2.5 1.5 2.5 1.5 2.5 1.5 2.5 2.0 2.5 2.0 a 163.2 to 244.8 exc1 2.5 1.0 2.5 1.0 2.5 1.0 2.5 1.0 2.5 1.0 2.5 1.0 244.8 to 326.4 excl 2.5 1.0 2.5 1.0 2.5 1.0 2.5 1.0 2.5 1.0 2.5 1.0 -

326.4 to 408.0 excl 2.5 1.0 2.5  ;.0 2.5 1.0 2.5 1.0 2.5 1.0 2.5 1.0 I 408.0 to 4E9.6 excl 2.0 1.0 2.0 1.0 2.5 1.0 2.5 1.0 2.5 1.0 2.5 1.0 469.6 to 612.0 inct 2.0 1.0 2.0 1.0 2.0 1.0 2.0 1.0 2.5 1.0 2.5 1.0 I

Tolcrances for average wetghts of lots for wtetns given in inches. .

Specified expressed in percentages of the specified weights per square foot 8 weight, 108-12D 120-132 132-14i 144-168 168 and '

v]. . psf excl exc1 excl excl over Over i Uncer i Over i Under i Over i Under i Over # Under i Over iUnder To 10 excl' 9.0 3.0 11.0 3.0 13.0 3.0 - - - -

10 to 12.5 excl 7.0 3.0 8.0 3.0 0.0 3.0 12.0 3.0 - -

12.5 to 15.0 excl 6.0 3.0 7.5 3.0 8.0 3.0 11.0 3.0 - -

15 to 17.5 excl 5.5 3.0 6.0 3.0 0

. 3.0 9.0 3.0 10.0 3.0 -

17.5 to 20 exc1 5.0 4 3.0 5.5 3.0 j 6.0 3.0 6.0 3.0 9.0 3.0 .

i 20 to 25 exc1 4.5 3.0 5.0 3.0 5.5 3.0 7.0 3.0 8.0 3.0 25 to 30 excl , 4'.0 3.0 4.5 3.0 l 5.0 3.0 6.5 3.0 7.0 3.0!

30 to 40 exc1 l 3.5 2.5 4.0 3.0 l 4.5 3.0 6.0 3.0 6.5 3.0 '

40 to 81.6 excl 3.5 ; 2.5 3.5 3.0 i 4.0 3.0 5.5 3.0 6.0 3.0 .

81.6 to 122.4 excl 3.5 2.5 3.5 3.0 1 ~ 3.5 3.0 4.0 3.0 4.5 3.0l 122.4 to 163.2 c;<c1 2.5 2.0 2.5 2.0 i 2.5 2.0 3.0 2.0 3.5 2.0 i 163.2 to 244.3 excl *5

. 1.0 f 2.5 1.0  ! 2.5 1.0 3.0 1.0 3.5 1.0

244.8 to 326.4 excl i 2.5 ; 1.0 _

, . 2. 5 1.0 l 2.5 1.0 2.5 1.0 3.0 1.0

. 326.4 to 403.0 excl 2.5 i 1.0 2.5 1.0 1 2.5 1.0 2.5 1.0 3.0 1.0 l

- 408.0 to 489.6 exc1 2.5 1.0 2.5 1.0 1 2.5 1.0 2.5 1.0 2.5 1.0 -

489.6 to 612.0 incl 2.5 1.0 2.5 1.0 l 2.5 1.0 2.5 , 1.0 2.5 1.0 l (13) Tolerances for overweight for sing;c plates a o 11/3 times the amounts in the above tabh..

(14) Tolerances for overweight for lots of circular and sketch plates are 11/4 times the amounts in the above tab!c.

(15) Tolerances for overweight for a sing!c circular plate and a single sketch plate are 12/3 times the amounts in the above table.

(16) The adopted standard density for rolled steel is 0.25",3 pound per cubic inch.

(17) The term lot means all the plates of cach tabular wid:h ar.d thicMess group represented in each shipment.

(3 _ u J (Continued on pa;;c 3)

Enclosure' (4) to 'pg. 12 of 16

C50A357 S8 ,

Pagg 8 ,

TOLEMNCES: (cont'd)

Plate: (ennt'd)  %

Leagth: (18) Up to 11/2 inch thick inclusive (B50A357A & A2) (Shcared to length) 5, .

Length: (18) Up to 21/2 !ach thick inclusive and up to 12 inch wide inclusive (B5')A357B & B2)- - --- P (Sheared to length)

L:ncth: (18) Up to 2 inch thick inclusive and over 12 inch wide (B50A35'IB & B2) (Sheared to length)

Tolerance, inch, plus only Specified thickness Specified xc c cl excl Incl (19) width, inch Length, To 25.3 15.3-25.5 25.5-40.8 40.8-81.6 From To excl inch psfexc1 psiexc1 psiexcl psf incl

- CO Up to 1/2 5/8 3/4 - 1 -a 60 84 120 5/8 11/16 7/8 1 L

'11/8 84 108 exc1 3/4 7/8 1 108 -

7/8 1 11/8 11/4

)

- 60 120- 3/4 7/8 1 11/8

) 60 84 240 3/4 7/8 1 11/4 84 108

    • C 7/8 15/16 11/8 13/8 108 -

1 11/8 11/4 13/8

- 60 240- I - 1 I/O I I/4 I I/2 d 60 84 3 00 1 11/8 11/4 11/2 1 84 108

  • CI 1 11/8 13/8 11/2 108 -

11/8 1 1/4 13/8 13/4 60 360.. 11/8 11/4 13/8 15/8 CO 84 480 11/4 13/8 11/2 15/8 84 108 exc1 11/4 13/8 11/2 17/8 108 -

13/8 11/2 15/8 17/8

- 00 4 11/4 11/2 15/8 17/8 CO 84 60 13/8 11/2 15/8 17/8 84 108 exc1 13/8 11/2 15/8 17/8 108 -

11/2 15/8 13/4 17/8 60 6 -

13/4 17/8 17/8 2 1/4 7

CO 84 7 13/4 17/8 17/8 21/4 l 84 108 exc1 13/4 7/8 17/8 21/4 108 -

13/4 2 21/4 21/2 60 "20 2 21/8 21/4 23/4 CO 84 and 2 21/8 21/4 23/4 84 108 2 21/8 21/4 23/4 108 -

2 23/8 21/2 3

, (18) Dermissible toleran;e under specified length,1/4 inch.

' (19) 11/2 inch for B50A357A & A2. 21/2 inch for B50A357B & B2 up to 12 inch wide inclusive and 2 inch for S50 \357B & B2 over 12 inch wide. -

Le n gth: Over 11/2 inch thick (350A357A L A2) (Gas cut) g Langth: Over 21/2 inch thick and up to 12 inch wide inclusive (B 50A357B L E2) (Gas cut) L.~ , ,

Le ngth: Over 2 inch thick and over 12 inch wide (B50A357B L B2)

Specified thickness. inch Specified weights Tolerance, inch.

Inci '

To excl Ib por sq ft plus only (20) 2 To 81.6 cxcl 1/2 l 2 4 81.6 tc 163.2 exet 5/8

! 4 6 163.2 to 244.8 exc1 3/4 l 6 8 244.8 to 320.4 exc1 7/8 S 15 inel 326.4 to 612.G inel 1 (20) Tolcrance may be taken all under or divided over and under, if so specified C on the purchase order.

P00R ORIGINAL.

(Continued on Page 9)

Enclosure (4) to pg. 13 of 16

B50A357. S 8 Page 9

  • OLtANCES: (cont'd)

Plate: (cont'd)

Flatness: (All material) .-

Specified Flatness tolerance for specified widths, thickness, Specified inch (21)(22)(23)(24) inch weigid, Upt ~

' 36-48 48-60 ~

60-72 72-84 Inct a o exc1 ex 1 uct exc1 . 'exc1 excl 1/4 To 10.2 exc1 9/16 3/4 15/16 11/4 13/8 1/4 3/8 10.2-15.3 excl 1/2 5/8 3/4 15/16 11/8 3/8 1/2 15.3-20.4 ercl 1/2 9/1G 5/8 5/8 3/4 1/2 3/4 20.4-20.C cxc! 7/10 1/2 9/16 5/8 D

  • 3/4 1 30.S-40.8 excl 7/10 1/2 9/1G 5/8 5/8 5/8 1 2 40A-f;1.6 cxcl 3/8 1/2 1/2 9/16 9/16 2 4 61.6- 153.2 excl 5/16 3/8 7[f6 1/2 1/2 4 6 103.2-i44.8 cxcl 3/8 7/16 1/2 1/2 9/16 6 8 244.8-326.4 cxcl 7/16 1/2 1/2 5/8 11/16 8 10 326.4-403.0 excl 1/2 1/2 5/8 11/16 3/4 10 12 408.0-469.6 cxcl 1/2 5/8 3/4 13/16 7/8 12 15 inci 480.6-G12.0 inci 5/8 3/4 13/16 7/8 15/16 Specified . Flatness tolerance for spectised wiatns, thickness, l Specifica inch (21)(22)(23)(24) I inch weight 84'-96 96-108 105 T20l 120-144 144-168 168 and -

Inc1 To excl : psf i excl excl excl I excl excl over  !

1/4 To 10.2 excl 11/2 15/S 13/4 17/8 - -

1/4 3/8 10.2-15.3 exc1 11/4 13/8 11/2 15/8 - -

, 3/8 1/2 15.3 20.4 c:.cl 7/8 1 11/8 11/4 17/8 21/8

\ '. 1/2 3/4 20.1-:,0.6 cxc1 3/4 1 1 1 1/8 11/2 2 3/4 1 30.G-40.8 exc1 5/8 3/4 7/8 1 13/8 13/4 1 2 40.8-81.G ekel 5/8 5/8 5/8 11/16 11/8 11/2 2 4 81.G-103.2 cxcl 1/2 172 0/16 5/8 778 11/8 4 6 163.2-244.3 exc1 9/13 5/b l '3/4 7/8 7/8 1 6 8 244.8-32G.4 excl 3/4 7/8 i 7/3 1 1 1

, 8 10 326.4-4U3.fE:ci i D/16 7/8 1:i/I3 1 1 1 10 12 408.0-(480.6 exc1 l 15/16 1 1 1 1 1 12 15 inct 480.0-612.0 inci l 1 1 1 1 1 -

t (21) Flatness tolerance for len",th - The longer dimencion Occ!iicd is censidered the length, and tolerance in fla:r. css :. Ion;; the length shall not c :cced the i;oular aracur.: for the specified width in platc3 up to 12 feet in Icagth, or in any 12 feet of longer plates.

(22) Flatness tolerances for width - The flatncss variation neross the width should not exceed

,, the tabular amount for Qc spccified width.

  • 9 (23) When the longer dimension is under 36 inches, the veri:-tion in flatr. css alor.; the length and across the width should not exceed 1/4 inch in each directior.. When the longer dimension is from 36 to 72 inches, incl, the flatness variation should not exceed 75 per cent of the tabular amount for the upccified width, but in no cr.se less than 1/4 inch.

(24) The above table and notes cmcr flatness tolerances of circular and sketch plates, based en the maximum dimens.cr.s of those plates.

(Continued on page 10)

Enclosure *(4) to pg. 14 of 15

. .m -

4 .

B50A 357 - $8

. Pege 10 ,

i -

. . . U TOLERANCES: (cont'd) ' -

~

~

w Slabs: (B50A357F & F?.) .

Width: (25) (26)

Width, inch Tolerance, inch _

Over To incl Plu s Minus - -

- 30 l'/ 2 1/2 30 40 5/8 -1/2 --

40 55 3/4 1/2 (25) Width dimensions shall be measured across flat rolled-surfaces and shall not include bulges along the edge.

(26) The 1/,2 inch minus tolerance is permissible only if slab is straight within 1/16 inch measured on flat

  • rolled surfaces. ,,

Length: ,

All sizes: + 1 inch.

Thickne s s:

All sizes: + 3/16 inch, - 1/16 inch.

Straightness:

T Width, inch Tolerance, inch -

Up to 25 inc1 1 Over 25 3/4 1

CERTIFICATE OF TEST:

The inanufacturer shall submit promptly to the purchaser at the point of delivery a certificate cf test in triplicate showing that the material conforms to this specification. Thi's certificate shall be addressed to the cection, unit or person specified on the purchase order and shall contain the GE designation and the purchase order number so that the certificate may be identified with the shipmer.t.

Acceptance of material from warehouse stores which cannot be identified p *-

with original melt will be based on analysis and test made by the ,

purchaser for conformity to this specification.

I P00R ORIGINAL n (Continuted on page 11)

Fnel airn (4) +n nn 1G nr 1c

.m ,

B50A 357-S 8 Page 111 PACKING AND MARKING:

All material shall be separated by size for shipment, and carefully packed in accordance with the latest practice of AISI to avoid damage or loss during shipment. When lift size is not specified on the purchase order, standard AISI lift will be acceptable.

Shipping papers shall be. legibly marked with the purchase order number, the weight, the manufacturer's name, and the GE designation.

Q v .

,w

..r.

P00R ORIGINAL DISTRIOUTICN: Lorge Generator and Motor Department and

~

Large Steam Turbine-Generator Division B50 LGhM

. B50 TB j B50 GEN T. C. J ohnson, Bldg. 41 - 3 Enclosure (4) to pq.15 of 16 1

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