ML20127B908

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Rev 1 to Special Process Procedure W-SP-9, Testing Reinforcing Steel Subjected to Cold Rebending
ML20127B908
Person / Time
Site: Waterford Entergy icon.png
Issue date: 06/18/1976
From:
J.A. JONES CONSTRUCTION CO.
To:
Shared Package
ML17198A241 List: ... further results
References
FOIA-84-455 W-SP-9, NUDOCS 8506220089
Download: ML20127B908 (6)
v • d • e


Text

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- - Procedure No, w-sp-9 J. A. JONES CONSTRUCTION COMPANY

", SPECIAL PROGE,SS PROCEDURE FOR TESTING REINFORCING STEEL SUBJECTED TO COLD REBENDING WATERFORD SES UNIT NO.3 CONTRACT NO. W3-NY-4 ENGINEERING QUALITY ASSURANCE CONSTRUCTION j REV. DATE APPROVED BY DATE APPROVED BY DATE APPROVED BY DATE O 6 lish Mk *- A&M 0.k IlI '

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J. A. JONES CONSTRUC riCN COMPANY PAGE 1 0F 3 SPECIAL PROCESS PROCEDURE ROCEDURE NO.

W-SP-9

, TITLE: REV. NO. I TESTING REINFORCING STEEL SUBJECTED TO COLD REBENDING & DATE 6/18/76 PROJECT TITLE: WATERFORD SES UNIT N . 3 CONTRACT NO. W3-NY-4 R-1 1. 0., ' PURPOSE

, This procedure outlines a mgans to determine the maximum degree of cold bending up to a limit of 50 to which a reinforcing bar may be subjected such that subsequent cold rebending does not reduce minimum yield strength to less than that specified in contract specifications.

2.0 SCOPE This procedure covers the cutting, cold bending, cold rebending, dye penetrant

! tests, tensile tests, and recording of data needed to determina the maximum j - degree of cold bending and subsequent cold rebending.

3.0 REFERENCES

~

t , 3.1 Ebasco Services, 'inc. Specificat ion No. LOU-1564.473, " Concrete Re-Inforcing Steel Furnishing, Fabrication and Delivery".

3.2 ACI-318-71 33 ASTM A615-72 ,

1 3.4 Ebasco Services, .inc., Letter No. F-7521 (JAJ #0616) and Ebasco Letter No. F-7762 (JAJ #0678). ,

3.5 J. A. Jones' Letter No. 0262 4.0 DEFINITIONS ,

I None.

5.0 RESPONSIBILITIES R-1 5.1 J. A. Jones will ensure that,all bending,' rebending and testing is performed in accordance with the procedures set forth below, complie  !

i data from tests performed and submit same to Ebasco for evaluation.

R-l 5.2 Ebasco will provide resteel in stock lengths, testing services and '

evaluation of test results.

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. J. A. JONES CONSTRUCT 10N COMPANY PAGE 2 CF 3 ,

SPECIAl. PROCESS PROCEDURE 0 RE NO.

y p_g TITLE: TESTING REINFORCING STEEL SUBJECTED TO COLD REBENDING E 0.

gg PROJECT TITLE: WATERFORD SES UNIT N . 3 CONTRACT NO. W3-NY-4 R-1 6.G.-

  • PROCEDURE The items detalled below shall be performed twice: once, when ambient temperature is above 600 F and the other when ambient temperature is below 400 . Ambient temperature during bending and rebending shall be recorded on Attachment A. -*

6.1 Fab rication R-1 6.1.1 Seventeen (17) bars each will be cut from #11 stock, #8 stock, and #6 stock. The length of each bar shall be 30 Inches and all bars of the same size shall be from the same mill heat and mill heat number recorded oh Attachment A.

R-1 6.1.2 Bars shall be marked on each end with numbers such as #11 -

,, 1, 2, 3 . . .; #8 - 1, 2, 3 a . . ; #6 - 1, 2 , 3 . . . .

6.2 Cold Bending

  • 6.2.1 Three (3)'0bars of each differgnt size bar shall be cold bent '

to 100, 20 , 30 , 40 ,0 and 50 . Diameter of bend shall be in accordance with the following, table.

8ar Size Diameter of Send

  1. 6 4)" or next larger *
  1. 8 6" or next larger
  1. 11 114" or next larger if the desired pin size is not available, use ~next larger size available and note on Attachment A.

A-l NR Two (2) bars of each size shall not be bent, but shall be tested in accordance with Paragraph 6.5 to establish reference criteria.

  • 6.3 Cold Rebending 6.3.1 Before cold rebending begins, the bend area sha.ll be defined and marked on ~each bar. This shall be done by determining as close as possible the center of bend and marking 4" each way for the #6 and #8 bars and 6" each way for the #11 bars. t g.1 6.3.2 Rebending shall be done as slowly and in as gradual an arc as

, possible. The method of rebending shall be the same as used l during actual field conditions. Bars shall be rebent until straight.

c 6.4 Dye Penetrant Testing 1 f

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J. A. JONES CONSTRUCTION COMPANY PAGE 3 0F 3 SPECIAL PROCESS PROCEDURE O M RE NO.

W-sp-9 T IT LE *. REV. NO. 1 Tre,TINn REINFORflNG STEEL SUBJECTED TO COLD REBENDING & DATE 6/18/76 PROJECT TITLE: 'WATERFORD SES UNIT NO. 3 CONTRACT NO. W3-NY-4

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6.4.1 Each bar shall be subjected to dye penetrant tests at three times during the test procedure. The first shall be run before bars are cold bent; the second shall be after the bars are cold bent; the third shall be after the bars are cold rebent.

Results are to be tabulated .bn each bar after each test, using Attachment 8. ,

6.5 Strength Testing 6.5.1 Each bar shall be tested to determine yield and ultfmate strength and elongation and results recorded on Attachment A.

7.0 ATTACHMENTS-

,, 7.1 Reinforcing Steel

  • Tensile Strength Test Results (Attachment A).

7.2 Dye Penetrant Test Results (Attachment 8) -

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, _ ATTACHMENT B

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- t.'m ERFORD SES UN IT NO. 3 DYE PENETRANT TEST RESULTS Procedare No: Date:

Specification No:

Item 1.D.: Size:

Materials (Type) i Penetrant .

Cleaner Developer Test Results:

Before Bending:

i After Bending:

i After Rebending:

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INSPECTOR
DATE:

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