ML102720635
| ML102720635 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 10/30/2009 |
| From: | Florida Power & Light Co |
| To: | Office of Information Services |
| References | |
| FOIA/PA-2010-0116 | |
| Download: ML102720635 (7) | |
Text
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Power 00.00 SPECIAL PROCESS SPECIFICATION SPS VA-N18 Rev.1 Page 1 of 2 TITLE VISUAL EXAMINATION ACCEPTANCE CRITERIA OF ASME SECTION XI, SUBSECTION IWE COMPONENTS 1.0 PURPOSE This procedure specifies ASME Section Xl, Subsection IWE acceptance criteria for visual examination of Class MC and Metallic Liners of Class CC Components, and their integral attachments.
2.0 SCOPE This document only applies to the visual examination of the following ASME Section X1 components at Crystal River Nuclear Unit 3:
ki)
Components which are classified as Class MC pressure retaining components and their integral attachments, and (2)
Metallic shell and penetration liners of Class CC pressure retaining components and their integral attachments.
3.0 REFERENCE DOCUMENTS This specification has been developed with the following documents as a reference:
(1)
ASME Section Xl, Subsection IWE, Requirements for Class MC and Metallic Liners of Class CC Components of Light-Water Cooled Plants, 1992 Edition through 1992 Addenda 4.0 PERSONNEL QUALIFICATIONS Personnel evaluating the examination results to the requirements of this specification shall be qualified and certified in accordance with following Material Technology Administrative Procedures:
(1)
MTAP No. 6, Certification Of NDT Personnel In Accordance With SNT-TC-1A,eF-AWS in the visual VT-1 and VT-W3 examination method.-an4 Only personnel certified as Level II or Level III in the visual methods shall record, evaluate and interpret examination results.
5.0 ACCEPTANCE CRITERIA Suspect areas will be accepted by engineering evaluation or corrected by repair/replacement. The engineering evaluation will determine the acceptability of the condition and determine the need for supplemental examinations.
REVIEWED BY DATE APPROVED BY DATE
Florida SPECIAL PROCESS SPS VA-N18 Rev.1 o Power SPECIFICATION Page 2 of 2 TITLE VISUAL EXAMINATION ACCEPTANCE CRITERIA OF ASME SECTION XI, SUBSECTION IWE COMPONENTS 5.1 EXAMINATION CATEGORY E-A, CONTAINMENT SURFACES (VT-3); CATEGORY E-B, PRESSURE RETAINING WELDS (VT-1);
AND CATEGORY E-C, CONTAINMENT SURFACES REQUIRING AUGMENTED EXAMINATION (VT-1) 5.1.1 Visual Examination of Coated Surfaces The following conditions shall be recorded for engineering evaluation:
(1)
Evidence of Flaking, (2)
Blistering, (3)
- Peeling, (4)
Discoloration, (5)
Other Signs of Distress 5.1.2 Visual Examination of Non-Coated Surfaces The following conditions shall be recorded for engineering evaluation:
(1)
Evidence of Cracking, (2)
Discoloration, (3)
- Wear, (4)
- Pitting, (5)
Corrosion (Wastage),
(6)
Arc Strikes, (7)
- Gouges, (8)
Surface Discontinuities, (9)
- Dents, (10)
Other signs of surface irregularities.
5.2 EXAMINATION CATEGORY E-D, SEALS, GASKETS, AND MOISTURE BARRIERS (VT-3) 5.2.1 Visual Examination of Seals, Gaskets, and Moisture Barriers The following conditions shall be recorded for engineering evaluation:
(1)
- Damage, (2)
- Erosion, (3)
- Tear, (4)
Surface Cracks, (5)
Other defects or wear that may violate the leak-tight integrity.
6.0 REVISION HISTORY Revision 0 05/30/97 Revision 1 Revised MTAP Title, added () brackets to paragraph numbers, removed references to the 1983 Edition Summer '83 Addenda of ASME Section Xl
Florida Power SPECIAL PROCESS SPECIFICATION SPS VT-N17 Rev.1 Page 1 of 5 TITLE VISUAL EXAMINATION OF ASME SECTION XI, SUBSECTION IWE COMPONENTS 1.0 PURPOSE This specification provides instructions for visual examination of ASME Section XI, Subsection IWE, Class MC and Metallic Liners of Class CC Components, and their integral attachments.
2.0 SCOPE This specification describes the basic requirements for visual examination to determine the condition of component surfaces and welds. This procedure meets the VT-1 and VT-3 requirements of ASME Section XI, Subsection IWE and applies only to Crystal River Nuclear Unit 3.
3.0 REFERENCE DOCUMENTS (1)
ASME Section X1, Subsection IWE, Requirements for Class MC and Metallic Liners of Class CC Components of Light-Water Cooled Plants, 1992 Edition through 1992 Addenda 4.0 PERSONNEL QUALIFICATIONS Personnel performing examinations to this specification shall be qualified and certified in accordance with following Material Technology Administrative Procedures:
(1)
MTAP No. 6, Certification Of NDT Personnel In Accordance With SNT-TC-1A, in the visual VT-1 and VT-3 examination method.
Only personnel certified as Level II or Level III in the visual methods shall record, evaluate, and interpret examination results.
5.0 SURFACE PREPARATION All surfaces shall be free from extraneous material that would interfere with the examination.
6.0 LIGHTING The lighting shall illuminate the area to be examined at right and oblique angles. This lighting can be accomplished using normal lighting, flashlights, drop lights, flood lights, etc. Reflections from the piece being examined must not interfere with the visual examination. The lighting and resolution requirements for the visual examinations are specified in Section 7.0. The resolution demonstrations should be performed in tthe least discernible location of the examination area.
It is not necessary to measure illumination levels on eaach examination surface when the same portable light source or similar installed lighting equipment iis demonstrated at the maximum examination distance.
When using portable battery powered lights, tthe illumination resolution capabilites shall be checked before and after each examination or series of examination, not to exceeed 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> of continuous use between checks.
REVIEWED BY DATE APPROVED BY DATE
Florida SPECIAL PROCESS SPS VT-N17 Rev.1 Se.e*
Power SPECIFICATION Page 2 of 5 TITLE VISUAL EXAMINATION OF ASME SECTION XI, SUBSECTION IWE COMPONENTS 7.0 EXAMINATION TECHNIQUES 7.1 ASME SECTION XI IWE GENERAL VISUAL EXAMINATIONN The General Visual Examination is performed on the accessiblee surface areas of the containment vessel pressure retaining boundary for evidence of degradation that maay affect either the containment structural integrity or leak tightness.-
7.2 ASME SECTION XI VISUAL VT-1 EXAMINATIONS VT-1 examinations are conducted to detect discontinuities and imperfections on the surfaces of components, including such conditions as cracks, wear, corrosion, erosion or physical damage.
7.3 ASME SECTION XI VISUUAL VT-3 EXAMINATIONS VT-3 examinations are conducted to determine the general mechanical and structural condition of components.
7.4 DIRECT GENERAL VISUAAL EXAMINATION Direct General Visual Examinnation may be performed when access is sufficient to detect evidence of degradation. The lighting ressolution shall be sufficient to resolve a 1/32" black line on an 18% neutral gray card-.-
7.5 DIRECT VT-1 VISUAL EXAMINATION Direct visual examination may be conducted when access is sufficient to place the eye within 24 inches of the examination surface and at an angle nott less than 30 degrees to the examination surface. The lighting level shall be a minimum lighting level of 500 foot-candles (fc). Resolution shall be sufficient to resolve a 1/32nd inch graduation on a standard machinist steel rule at the examination surface.
7.6 DIRECT VT-3 VISUAL EXAMINATION Direct visual examination may be conducted when access is sufficient to place the eye within 48 inches of the examination surface. The lighting level shall be a minimum of 500 foot-candles (fc). Resolution shall be sufficient to resolve a 1/10th inch graduation on a standard machinistt steel rule at the examination surface.
7.7 REMOTE VISUAL EXAMINATION In some cases, remote visual examination may have to be substituted for direct examination. Remote visual examination may use visual aids such as mirrors, telescopes, borescopes, fiber optics, cameras, or other suitable instruments. The lighting and resolution capability of remote systems shall be able to detect the conditions or indications for which the visual examination is being performed.
When remote visual examinations are performed using an automated positioning device, the location and dimensions of indications shall be obtained using the position display readouts of the positioning device. If no position display readouts are available, the location of the indication shall be recorded relative to known physical locations on the part, and the dimensions of the indication shall be estimated based on known surface irregularities.
8.0 SIZING OF INDICATIONS BY REMOTE VIDEO EXAMINATION
Florida SPECIAL PROCESS SPS VT-N17 Rev. 1 Power SPECIFICATION Page 3 of 5 TITLE VISUAL EXAMINATION OF ASME SECTION XI, SUBSECTION IWE COMPONENTS In order to determine the size of the indication, the distance from the examination area to the face of the camera must be known. This may be accomplished by using a stand-off device to hold the camera at a known fixed distance from the indication being viewed or by using known drawing dimensions to determine this distance.
Measure the actual size of the indication as viewed on the video monitor screen.
Perform sizing calibration by placing a graduated scale in the camera's field of view under the same conditions as the indication was viewed (water, air, or gaseous atmosphere), the same distance, and in the same plane as the measured indication.
Determine/calculate the sizing correction factor by taking a measurement of a one inch length of the graduated scale as viewed on the video monitor screen.
To obtain actual indication size, divide the indication measurement by the sizing correction factor.
Example:
Correction factor as measured on video monitor screen 1 inch on graduated scale =
1.85 inches as measured on monitor screen. Indication dimensions as measured on monitor screen = 0.34 inches.
0.34 / 1.85 = 0.18 inches corrected indication length/size 9.0 AREAS OF EXAMINATION Work request documentation and/or engineering instructions which reference this procedure will specify the areas required to be examined.
10.0 REPORTS OF EXAMINATION Visual examinations shall be documented on an appropriate visual examination report. Indications of discontinuities shall be evaluated in accordance with the appropriate SPS acceptance criteria specified in the Work Request documentation and/or engineering instructions.
Discontinuities and unacceptable defects shall have their dimensions and orientations accurately documented.
Photography or video tape recording may be used to record questionable discontinuities or imperfections for future evaluations. Where possible, graduated scale should be recorded to document an accurate dimension. The photograph or videotape shall be adequately identified to describe the area viewed, component identification, and accurate orientation of the area.
Florida SPECIAL PROCESS SPS VT-N17 Rev. 1 Power SPECIFICATION Page 4 of 5 TITLE VISUAL EXAMINATION OF ASME SECTION XI, SUBSECTION IWE COMPONENTS The examiner shall complete an examination report (similar to Attachment 1) containing the minimum information listed below:
Plant Unit System Procedure and Revision ISI Figure Number (if applicable)
Work Request Number Examination Purpose Acceptance Criteria Examination Technique Examination Equipment Examination Results Examination Limitations Examiner Signature, Certification Level, and Date The examination report shall be submitted to the responsible engineer for evaluation. If the evaluation identifies unacceptable conditions, the precursor card number must be identified on the examination report.
11.0 ATTACHMENTS Attachment No. 1 Visual Examination Data Sheet (Example) 12.0 REVISION HISTORY Revision 0 05/30/97 Revision 1 Added clarifications for checking lighting levels, added the IWE General Visual Examination method, added the 50 fc lighting requirements for direct examinations, inserted updated inspection report to attachment 1, removed references to the 1983 Edition and Summer Addenda of ASME Section XI
Florida Power SPECIAL PROCESS SPECIFICATION SPS VT-N 17 Rev. 1 Page 5 of 5 TITLE VISUAL EXAMINATION OF ASME SECTION XI, SUBSECTION IWE COMPONENTS Florida Power VISUAL EXAMINATION DATA SHEET Corporation ASME SECTION XI, SUBSECTION IWE Plant Crystal River Unit 3
Page of System _____Exam.
Data Sheet No.
Procedure SPS VT-N17 Revision Figure Number WR No.
Component Description DWG.
Examination
Purpose:
[Ihisi DS Oori-Acceptance Criteria VA-N18 Rev.
ASME Section XI 1992 '92 Addenda Technique: Dobwi Dvr-1 Olvr.3
[-aredt
-inue Resolution: 01/32z-D1tlO-ON/A Equipment: O'-nashlight
[Hrmr" D0 joer D up ier D Qhr:
Examination Results Flaking 0YM 0DNO 0 N/A Arc Strikes 0s Y OE O-D0N/A Blistering 0OYs 0O DN/A Gouges OY 0O ON/A Peeling 0'f DOr DN/A Surface Discontinuities 0 Y OE O0N/A Discoloration 0'ys Y
OE DN/A Dents O'YE 0O ON/A Cracking 0v*
DNO ON/A Surface Irregularities 0* Y OE O-0N/A Wear D0 DNO ON/A Other: _
N/A Corrosion (Wastage)
D0 DNO ON/A Sketch / Comment Area
[Recordable Indications PresentODs 0NO Supplemental Data Attached Ds D NO Examiner (print & sign)
Level Date Reviewer (print & sign)
Level_
Date ANI/ANII If Required (sign)
Date If Recordable Indications Present, Engineering Evaluation Required.
PC# (if required)
Acceotable bv Evaluation : O-,
0 NO (Provide basis and / or rework / repair method)
Engineering (print & sign)
Date