ML20199E716
| ML20199E716 | |
| Person / Time | |
|---|---|
| Site: | 05000000, Oyster Creek |
| Issue date: | 03/13/1985 |
| From: | Kabana A, Thornton J DUER SPRING & MANUFACTURING CO. |
| To: | |
| Shared Package | |
| ML20199E722 | List: |
| References | |
| HC14000, NUDOCS 8606230403 | |
| Download: ML20199E716 (6) | |
Text
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DUER SPRING and Manufacturing Company CORAOPOLIS, PEN AA.15108 QUALITY ASSURANCE PROCEDURE MAGNETIC PARTICLE INSPECTION - WET CONTINUOUS METHOD NAME TITLE SIGNATURE DATE PREPARED BY AL KABANA 2.A.MGR.
M 3/13/85 APPROVED BY J. M. THORNTON
- 2. A. ENGR.
h)g 3/13/85 v
APPROVED BY QUALIFICATION PERFORMED BY:
AL KABANA QUALIFICATION TESTING WITNESSE BY:
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.fy, GOkRdN[REPRESENATIVE DATE OF QUALIFICATION TESTING:
/,2 /#ref 7 O. A. P. NUMBER REV.
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DUER SPRING and Manufacturing Company CORAOPOLIS, PENNA.15108 SCOPE:
THIS PROCEDURE SHALL BE USED TO MAGNETIC PARTICLE INSPECT SPRINGS ACCORDING TO THE WET CONTINUOUS METHOD.
EQUIPMENT:
DUER SPRING MAGNAFLUX MACHINE - llJ5 PROCEDURE:
A) SOLUTION TO BE USED SHALL BE IN ACCORDANCE WITH PARAGRAPH 5.1.1 OF MIL-I-6868E AND ASTM-D-1796.
CHECK THE CONCENTRATION OF FLUORESCENT PARTICLE IN MACHINE BATH AT THE START OF EACH INSPECTION PERIOD, BUT NOT LESS THAN ONCE PER SHIFT, PER MIL-I-6868E PARAGRAPH 7.2.1. CONCENTRATION TO BE O.1 ML. TO.05 ML. PER 100 ML. OF VEHICLE.
B) WARM UP BLACK LIGHT FOR APPROXIMATELY 15 MINUTES.
THE INTENSITY OF THE BLACK LIGHT SHALL BE A MINIMUM OF 800 MICROWATTS PER SQUARE CENTIMETER WHEN MEASURED AT THE SURFACE OF THE SPRINGS.
CHECK THE INTENSITY OF THE BLACK LIGHT BEFORE PERFORMING THE INSPECTION WITH AN ULTRA-VIOLET PRODUCTS, INC. MODEL J-221 METER OR EQUIVALENT.
C) ADJUST THE HEADS FOR GOOD CONTACT DURING MAGNETIZATION DIRECTLY THROUGH THE SPRING.
INSERT INSULATOR BETWEEN THE TIP AND BAR AND ADJOINING COIL.
D) CURRENT TO BE 800 AMPERES TO 1200 AMPERES.
I E) MAGNETIZE SPRING (S) AS SHOWN IN PLATE (i) AND PLATE (ii) l APPLY SOLUTION AFTER MAGNETIZATION.
RE-MAGNETIZE IMMEDIATELY AFTER APPLYING SOLUTION.
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DUER SPRING and Manufacturing Company CORAOPOLIS, PENNA.15108 HEAD FIELD BATH
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% *j oo N$$kS WIRE PLATE i STEP NO. 1 - HEAT SHOT (WITH CENTRAL CONDUCTOR)
KEEP THE CENTRAL CONDUCTOR AGAINST ONE SIDE OF THE SPRING.
WHEN THE ENTIRE CIRCUMFERANCE IS NOT MAGNETIZED AT ONE TIME, INSPECT THE ENTIRE CIRCUM-FERANCE BY REPOSITIONING THE SPRING ON THE CONDUCTOR ALLOWING FOR APPROXIMATELY 10% MAGNETIC FIELD OVERLAP.
THE DISTANCE ALONG THE CIRCUMFERANCE EFFECTIVELY MAGNETIZED IS APPROXIMATELY FOUR TIMES THE DIAMETER.
INSPECT FOR PARTICLE INDICATIONS OF TRANSVERSE DISCONTINUITIES - MARK DISCONTINUITIES.
l HC14000 3
l O. A. P. NUMBER REV.
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DUER SPRING and Manufacturing Company CORAOPOLIS, PENNA.15108 N O FIELD SEAM OR CRACK IN WIRE f
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P. LATE ii STEP 2 - HEAD SHOT APPLY BATH CURRENT PASSED THROUGH SPRING FROM END TO END LOCATES LOGITUDINAL DISCONTINUITIES IN THE WIRE THAT FORMS THE SPRING.
INSPECT FOR PARTICLE INDICATIONS OF LONGITUDINAL DISCONTINUITIES - MARK DISCONTINUITIES.
F)
INSPECT WITH A BLACK LIGHT FOR INDICATIONS OF DISCONTINUITIES.
ONLY PERSONNEL WHO ARE QUALIFIED AS LEVEL II OR LEVEL III OF DUER SPRING & MFG. CO.'S PERSONNEL QUALIFICATION AND CERTIFICATION IN NON-i DESTRUCTIVE TESTING (MAGNETIC PARTICLE INSPECTION) l SHALL INTERPRET AND EVALUATE INDICATIONS.
l G)
ACCEPTANCE STANDARDS:
1)
SPRINGS SHOWING NO INDICATIONS OF DISCONTINUITIES SHALL BE ACCEPTED.
l 2)
SPRINGS WITH DISCONTINUITIES OF SUCH DEPTH THAT REMOVAL WOULD REDUCE THE BAR DIAMETER BELOW 5%
SHALL BE RED TAGGED.
3)
SPRINGS SHOWING DISCONTINUITIES WITH DEPTH LESS THAN IN NUMBER 2 ABOVE SHALL HAVE THE DEFECTS REMOVED BY FILING AND/OR GRINDING AND SHALL THEN BE REINSPECTED.
4)
RESULTS OF THE ABOVE TESTING HC14000 3
SHALL BE RECORDED ON A DUER i
SPRING & MFG. CO. TEST REPORT FOM.
O. A. P. NUMBER REV.
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DUER SPRING and Manufacturing Company CORAOPOLIS, PENNA.15108 H)
DEMAGNATIZE SPRING (S) BY APPLYING A DIMINISHING A.C.
FIELD WHICH IS INITIALLY GREATER TO THE MAGNETIZING FORCE.
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DUER SPRING and Manufacturing Company CORAOPOLIS, PENNA.15108 i
i REVISION NUMBER DATE REASON FOR REVISION APPROVAL 0
5/4/82 N/A SEE COVER SHEET 1
11/21/84 ADDED PLATE i AK 11/27/84
& PLATE ii AND REVISED STEP E 2
1/18/85 REVISED PARAS.
AK 1/18/85 A,B, E, AND H 3
3/13/85 REVISED PARA E
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