ML20100P785

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Applicant Exhibit A-P-27,consisting of Eddy Current Test Results After 100 H of Operation for Emergency Diesel Generators 101,102 & 103,Procedure NDE 11.5,Rev 0 & Rev 1
ML20100P785
Person / Time
Site: Shoreham File:Long Island Lighting Company icon.png
Issue date: 09/10/1984
From:
FAILURE ANALYSIS ASSOCIATES, INC.
To:
References
OL-A-P-027, OL-A-P-27, NUDOCS 8412140431
Download: ML20100P785 (33)
v • d • e


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O FaAA NDE Procedure 11.5, Rev. O O

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o nah A^ssoaa' tes sis NONDESTRUCTIVE EXAMINATION PROCEDURE NDE: 11.5

Title:

EDOf CtgutENT inaru,uCN PROCEDURE Page 1 of 2 POR N000UWt PISTON SKIRTS Revision: 0 Date: 11/02/83 Reviewed - NDE Level 111: A" - 6/ Date: //-/r- 83 ,

/

1.0 Purpose and Scope

1.1 To establish calibration, scanning and evaluation techniques for eddy current exuination of nodultr iron piston-skirts.

1.2 This instruction covers the eddy-current examination of the boss areas near the 4-bolt-holes inside the piston skirt. .

2.0 Personnel Certification 2.1 Personnel performing eddy-current examination shall be certified to SNT-TC-1A O Level II.

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3.0 , Equipment .

3.1 Eddy-current ins'trument used with this instruction shall' be an impedance-plane display instrument.

3.2 The eddy-current test probe shall be a FaAA-ECP-100-P or FaAA-ECP-200-P.

3.2.1 The reference crack standard shall be PAO-C-1.

4.0 Examination Surface I 4.1 Only those surfaces that have a machined or ground finish shall be tested.

! 5.0 Calibration Procedure -

5.1 Set frequency to 2 letz for ECP-100P probe or to 500 KHz for ECP-200P probe.

5.2 Set volts per division at 0.5.

5.3 Set gain at 30.

5.4 Adjust vertical and horizontal positioning controls such that balance point is at (0v, IV).

Pa A A-M-83 t o

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. Failum O ' A@ssocates NONDESTRUCTIVE EXAMINATION PROCEDURE NDE: 11.5

Title:

ED0Y CINtRN inrtcu0N PROCEDURE Page 2of Z.

FOR NDDULAR PISEN SKIRTS Revision: 0-Date: 11/02/83 i

5.5 Balance with probe on test piece.

5.6 Adjust horizontal attenuator such that horizontal saturation is greater than 1.5v and less than -1.5v.

5.7 Adjust phase angle such that probe lift-off causes the beam to move horizon-tally to the right on the CRT.

5.8 . Adjust gain such that the crack 'in reference standard PAO-C-1 gives a 2v i 0.2v negative signal at the horizontal center of the CRT. i i 5.g Repeat steps 5.4 thryrn 5.8 until. items 5.4 through 5.8 are accomplished without further inst w ant adjustments.

i 6.0 Examination ,; _ .

, 6.1 Examination shall be of mac}iined areas on the boss where color contrast

penetrant show linear' indications greater than 1/32 inch.

7.0 Recording criteria 7.1 All indication' showing a crack. indication greater than 10% of the crack signal in the reference standard PA0-C-1 shall be recorded.

7.2 The length and orientation of the indication shall be recorded.

i 8.0 Records 8.1 The results of the examination shall be recorded on eddy current examination reports. All required entries shall be addressed. A "M/A" shall indicate when a response is not applicable.

- 8.2 All recorded signals shall be located by measurement from a specific point to center of probe. .

8.3 All calibration data stieets and examination records shall be filed according to job number. -

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P-27-28 FaAA NDE Procedure 11.5, Rev. 1 l

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t Assoaates NONDESTRUCTIVE EXAMINATION PROCEDURE NDE:-

Title:

EDDY-CURRENT INSPECTION PROCEDURE 11 5_

Pa ge -_1._ o f 3._

FOR N000LAR IRON _ PISTON-SKIRTS Revision: 1 Date: 11/onsa l Approved by NDE Manager: A 88 = ~-

Date: d.r//cr Reviewed - NDE Level lil: deMMe ^ Date: //b/sA  !

1.0 PURPOSE AND SCOPE i

1.1 l examination of nodular fron piston-skirts.To establish calibratio -

1.2 the 4-bolt-holes inside the piston skirt.This instruction covers t 2.0 PERSONNEL CERTIFICATION 2.1 Level !! Eddy-Current Inspector, as per "FaAA P Qualification of ICT. Personnel."

e 3.0 EQUIPfENT . ..

3.1 Eddy-current d

plane display instrument. instrument used with this instruction shall be an i -

3.2 The eddy-current test probe shall be a FaAA-ECP-100-P.

3.2.1 The reference standard shall be PAO-7396-831230.

4.0 EXANINATION SJRFACE 4.1 Only those surfaces that have a machined or ground finish shall be te .

5.0 CALISRATION' PROCEDURE 5.1 Set frequency at 2.0 1 0.2 miz.

5.2 Set volts per division at 0.5.

5.3 Set gain at 30.

5.4 Adjust horizontal is at (0 V, 1 V). and vertical positioning controls such that b l a ance point Ps A A-M-a3 to

l f-21-30 1 Failure H

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Analysis Assocates NDE: 11.5 NONDESTRUCTIVE EXAMINATION PROCEDURE Title. ED0Y-CURRENT INSPECTION PROCEDURE Page 2 og 3 FOR NODULAR IRON P!$ TON-5KIRTS Revision: I Date: 11/02/83  !

l 5.5 Balance with probe on test piece.

5.6 Adjust horizontal attenuator such that horizontal saturation is greater than i 1.5 V and less than -1.5 V.

5.7 Adjust phase angle such that probe lift-off causes the beam to move horizon-tally to the right on the CRT.

5.8 Adjust gain such that the 1/16 x 1/32 inch EDM notch in. reference standard I PAO-7396-831230 gives a 1.010.1 Y negative signal at the horizontal center of the CRT.

5.9 Repeat steps 5.4 through 5.8 until steps are accomplished without further instrument adjustments.

5.10 Reca11bration shall be completed at least once an hour.

5.11 Eddy-current instrument should be on at least 10 minutes before calibration or testing.'

6.0 EXAMINATION ,

6.1 Examination shall be of the legs on the' boss where color contrast penetrant show linear indications greater than 1/32 inch length.

7.0 RECORDING CRITERIA 7.1 All eddy-current crack indications with signal magnitude greater than 507, of the signal magnitude obtained from the 1/16 x 1/32 inch EDM notch in the reference standard PAO-7396-831230 shall be recorded.

7.2 The magnitude, location and orientation of the indication shall be recorded.

8.0 RECORD 5 8.1 Set-up and calibration shall be recorded on report form 11.1.10.

8.2 All recordable indication shall be recorded on report form 11.5.8.4 (see next page).

All records shall be filed according to job number.

O 8.3 Fa A A-M 0- t o Q,.. . - _ _ _ _ _ _ , - _ _ _ _ . , . . _ _ _ . , , . _ , - _ _ , _ , . . -

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Lars,1 Chesaloal Analyele Iron 92.568%

Slot width less than 0.005*

88Hoon 2.43% '

Fractions ! 1/84* Other 1.542%

l Note: Material from TDI platon skirt.

! oEcCrePreOu: n.4 1.tI,.. r.ser.... .t. 4.rd Fallwe Analysis Associates

.. PAO-7398-831230 l EDM on machine surface 2225 East Bayshore Road 7 TCLEOAuCES US$LESS OWNERWISE SPECSFtED DRAWN CHECKED APP's p I

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