ML070600397
| ML070600397 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 10/10/2002 |
| From: | AmerGen Energy Co |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| SP-1302-52-120, Rev 3 | |
| Download: ML070600397 (11) | |
Text
Amdwl SPECtFlCATlON I
QUALITY FUR INSPECTION AND LOCALIZED REPAtR OF THE TORUS AND VENT SYSTEM COATING OYSTER CREEK PREPARATION DATE / d G . . 2 ENGINEERING APPRO VA DATE -
l e -h P Z ,
QV CONCURRENCE DATE /0*03+&
DOCUMENT NO.
_._I_
spection and Localized Repair of Torus anr Vent System Coating REV
SUMMARY
OF CHANGE APPROVAL DATE 0 Driginal Issue 1 Etimhated the elmmeter adhesion tests, putty knife peel test, and the vacuum box tests.
Detined scope! of de-sludging.
Revised scope of visual impactions.
Reducedrequirements for Ut inspectins unless requimd for pit evaluation.
Removed chemistry requirements.
Rekr b AR A201 4230 E5 for explanation and justification of changes.
2 Includes referenceto C-1302-1&7-E310-038 (pit depth acceptance criteria) #
3 a
SP-1302-52-120 Rev.2 July 2003 Page3ot 10 1.o SCOPE This speciffcation provides the requirements for torus water daslubging, inspection and repair of the interior coating of the Oyster Creek torus shell and vent system located abov6 and beiaw the water Meq The pimaw purpose of the inspectbns is to of the blistered coating at the invert of the where necessary to protect the torus Inspection of the submerged 2.0 The following documents are part of this specification, and are applicable to the extent indicated by the specific reference.
The latest revision, edition, or addendum in effect shall apply far those publications which are not specifical#yidentified by date.
I3ja3SGd- ' h Wd w L 2.2 10 CFR Part 21 "Repoftingof Defects and Noncompliance" 2.3 ANSI N45.2.6 "Qualification Inspection Examination and Testing Personnel far Nuclear Power Ptants".
2.4 MA-AA-716-008 "FOREIGNMATERM- EXCLUSION PROQRAM"
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2.5 "Manual of Coating Work for Light Water Nuclear Power Plant Primary Containment and Other Safety Related Facilities," published by American Society of Testing and Materials.
2.6 ANSI N5.f 2-1374, "ProtectiveCoatings (Paints)for Nuclear Industry",
pubkhed by American Nafional Standard Instkute 2.7 SGPAf Rep& # GPU-004-002Rev, 0, "Analysis of Btistered Torus Coating - Oyster Creek Nuclear Generating Station." prepared by S.G.
Pinney & Associates, lnc.
-% rJ' 55)-1302-52-120 Rev2 Juty 2003 Page 4 of 10 2.8 ANSi 101.2-1972, "Protective Coating (Paints) for Light Water Nuclear Containment Facilities," published by American National Standard Institute 2.9 ANSI NfOi.4-1372,"Quality Assurance for Protective Coatings Applied to Nuclear FaciMies",published by American National Standard fnstitute 33?
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0 0 2.10 ASTM 0-714, 'Standard method d Evaluating Degree of 8listering of Paints' lh 2.1t Underwater Construction Corporation'sQA Program Manuat "Quality Assurance Manual', Revision 0 Dated December 9,1996 Under Water Engineering Services (Subsidiary of S. G. Pinney &
Associates) 148 Coating & Corrosion Inspection Report of O.C. Toms Immersion Area & Vent Header Report ## FER-7101 Rev. 0 dated 3/2/93 2.13 ASME Section XI Part IWE t992 Edition with 1992 Addenda (CM- t) 2.14 3
r; 2.15 ArnerGen Calculation C-l3O2-18?-E310-038, "Oyster Creek Torus t, Corrosion Allowable Pit Depth" 3.0 GENERAL REQUIREMENTS 3.1 Contractor Work 3.1.1 Perform torus water desludging. I 3.1.3 Prepare final report to document the inspection and repairs. Stili photographs andor videotape shali be submitted to support written report.
3.2 AmerGen Work 3.2.1. Provide station services to support contractor's work.
3.22 Monitor de-sludging, inspection, and repair of coating defects.
3.2.3 Provide ultrasonic thickness equipment, train divers in ultrasonic transducer use, and thickness measurement procedures.
SP-I 302-52-120 Rev.:!
July 2003 Page 5 of 3.0 3.2.4 Perform water analysis, 3.2.5 Provide container and analyze for MtC?microbes.
4.0 DETAILED REQUfREMENTS 4.1 Torus Water CIeanup T o w water cleanup effart shall include removal of biomass from all bays.
4.1.1 Dastudge ail:twenty (20)torus bays using ArnerGsn approved procedures prior to inspectinghpairs. The procedure shall include preventive measures in equipment selection and process development to minimize (or etirninate) cracking of existing blisters during desludging operation.
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4.1.2 Scope of De-Sludging The invert area, In all 20 bays shall be de-siudged. The invert is defined as the bottom of the Toms shefl up to the tocation of the ECCS Suction Strainer nozzles. Tbis includes both sides of the shell. In addition, der-sludging shall be performed on areas above the invert where required to provide sufficient visibility to perfom general visual coating inspections as defined in Section 4.2.7 of this specification.
4.2 Visual Inspection <CM 11 -
fl-3 S$&cA Q-db 4.2.1 Perform d@&&a!\rihWh#9\&m&of the interior immersion torus shell coating in a# 2$1bays. The following coating defects shatl be delmir&on / peeling, cracking, andor, blistering (report in accordance with Reference 2.10) o,VT-WJ;S\JQ~ e e ; , + h 4.2.2 Perform -of three existing one square foot test patches, one patch in Bay 6, Quadrant I and two patches in Bay 7, Quadrants 1 and 2 respectively. lest areas are outlined with t~mierr~ 13 caaung materiaf and are accompanied by an arrow which points to the reactor. Specific bcations of the test patches and detaifs of the previous inspection are given in References 2.7 and 2.12.
4.2.2.1 Divide each test patch into quadrants and measure diameter of each bfister that is intersected by dividing lines.
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.:>. :::I ::i SP-1302-52-120 Rev.2 July 2003 Page 6 of 10 4.2.22 Take photographs of each test patch. Photographs shaH include overalf view of each test area as well as cbs-ups of tAe msasured bBstars. AI1 photographs shaft include a wter.
Examine surfaces for coating defects with particular attention paid to the vent tube and vent header intersection. ff required to aid the examination, the accumulated water at these intersections may be out with care taken to avoid the coated surface.
dings through sketches vapor region of the torus m the torus catwalk ufitizing st effort basis.7k.a h\Lmi% &k.k
~ ~ f Q N ? Q @ & M ..
bbBEkhelu-m/p\.'ls al examinations of three suction strainers located in within on0 shift.
i8 for any sign of blockage. Report any sign of to AmerGen Project Engineer (or designee] I
SP-1302-52-120 Rev9 July 2903 Page7of 10 4.3.1.7 Area I is hated-in Bay 6--in the transition region between the heavily blis4itered coating system of McM 46 X 16 and Mobil 78 and the non-blistered coating system of Mobif 78. (Reference 2.1 2) 4.3.1.2.1 Area 2 is located on the Bay 617 ring girder in the non-biistered coating system of Mabil78.
(R0fer8nCe 2.22) c 4.32 If pitting is present, the foltawing guidance shall be used. (H-.$)
4.3.2f Q3caeO 0 , O W hh25
- 4.3.2.p/Z Locations that do not meet the requirements specified above shall be characterized based on the size of the area, center to center distance between corroded areas, the maximum pit depth and its location in the Toms based on major structural features. These details shalt be sent tu Clyster Creek Engineering.
SP-1302-52-120 Rev.2 Jilly 2003 pageeof io 4.4 Vent Header Thickness Mwsurements 4.4.1 AmsrGen Pruject Engineer (or his designee) shall determine the number and lomtions where remaining waA thickness and/or pit depth mestsurments will be performed on the vent header. Such determination shalt be based upon the results of visual examination of the header (paragraph 4.2.3). The selected areas shaN inciuds worst corroded areas.
4.4.2 At least one uftrasonic thickness reading shaf? be taken in the designated area, 4.4.3 I f pitting is present, the depth of the deepest pit shalt be measured using a pit gage. The thickness of the metal surrounding the pit shall be determined at three different locations after removing the coating.
4.4.4 Ultrasonic thickness measurements and pit depth readings shall be repotted within one shift to AmerGen Project Engineer (or his designee) for disposition. .
4.5 Repair of coating (CM-IJ 4.5.1 Vendor shall the toms and vent system in accordance with only approved repair material is UT-15 manufactured by Picco Coatings Co. of Houston, Texas.
4.5.1.1 The types of areas tu be repaired are mechanical damage, coating defects exposing substrate, fracfured blsters showing signs of conusion and the testing areas where coating has been removed.
4.5. I .2 The sire of the repair area shall not exceed one ( I )
square foot unless directed by AmerGen.
4.5. I .3 Coating material to be applied for repair of the Oyster creak tams shsfi and vent system shall be qualified in accordance with References2.8 and 2.9.
4.6 Microbial Sample
SP- 1302-52-3X)
Rev2 July 2003 Page 9 of 10 4.6.1 Two- samples of the microbial mass shalt be coltected from the torus in containers provided by AmsrGen.
4.7.1 The Contractor shali minimize contamination of the tows water, Any chemical spills shalt be cteaned up to the satisfaction of Ameffien.
4.7.2 All materials brought into the torus must have prior approval of Ameffien Plant Chemistry Department and be controlled under Reference 2.4.
4.7.3 Att materids brought into the tows by Contractor must be removed by the Contractor.
5.0 QUALITY ASSURANCE ( CM-\1) 5.1 The work is "Q" Quality and shall be parfowed in accordance with Reference 2.1.
5.2 inspection records and personnel and procedure qualifications shal be retained as required by R8ference 2.1 b 2 .\3.
5'3 The eontractor shall have a QA Program that References 2.1 through 2.3,2.5, 2.6, reviewed and approved by AmcsGen pdor fo any initiation of work.
5.4 Coating inspector quafificati References 2.3 $&& 2.1 5 AmerGen prior td any initiation of work.
in aecordanc8 with be approved by B
-4 5.5 Reference 2 2 applies to the the Contractor's QA program. The resolution of and satisfy the requirements of the Oyster 2.1 and 2-14),
6.1 Documents to be supplied within 30 days after award of contract.
6.1.t Coating woridtestinglinspection procedures.
SP-t302-52-120 Rev.2 fury 2003 Page lOof 10 6.1.1.1 Procedures to be supplied inctude adhesion testing, peel testing, vacuum box testing, coating removal for ultrasonic testing, and coating repair.
6.1.2 Qualificationsand Certificationsfor the inspectors.
6.1.3 Contractor's QA ManuaUProgram.
6.2 Document to be supplied within 30 days after completion of project.
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&2.1 Draft final report for Arneffien review and comment. ArnerGen review cyde will take two weeks.
6.3 Document to be supplied within 60 days after completion of pmject.
6.3.1 Final tnspection Report 6.3.1.1 Inspection report &ail include maps showing focations of defects, all test results and photographs showing coating condition. The documentation of repairs will meet the intent of Reference 2.9.
6.3.2 Video Tape 6.3.2.1 The videutape shall document condition of coating in the immersion zone and in venf header.
6.3.2.2 The videotape shalt show results of visual inspection of coating condition in the test patches.
6.3.2.3 The video shall show those areas not vacuumed during the de-sludging, 6.3.2.4 The video shaffshow the detail conditions of the suction strainers .
6.3.2.5 The video tape shaft show any new special interest areas uncovered during inspection.
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SFJ-1302-52-t20 Rev.2 July 2003 Page 2 of 10 TABLE OF CONTENTS ARTICLE PAGE 1.0 SCOPE ................................................................................................ 3
2.0 REFERENCES
...................................................................................... 3 3.0 GEMEAAL RMUIREMENTS .............-..-.................................................. 4 3.1 Contractor Work ..........................................................................4 3.2 h 8 6 i e n Work ............................................................................ 4 4.0 DETAILED REQUIREMENTS .........I.......I.............1............................._.....
4.1 Toms Water Cleanup ...................................................................
4.2 Visual Inspection ................... ......................................................
4.3 ._
Torus Shell ffiickness Measurements ................... ....................._...
4.4 Vent Header Thickness Measurements ............................................
4.5 Repair of Coating .........................................................................
4.6 Mkrobial Sample .........................................................................
4.7 Cteanfiness ........ .....................................................................
5.0 QUALtTY ASSURANCE ........................................................................... 9 6.0 INFORMATIQN TU BE SUEMiXfED .......................................................... 9 6.1 Documents to be supplied within 30 days after award of contract ........... 9 6.2 Documentio be supplied within 30 days after completion af project ........ 10 6.3 Document to be supplied within 60days after completion of project ........ 10