ML20140F145
| ML20140F145 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 11/19/1981 |
| From: | Cummings R TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | |
| Shared Package | |
| ML20140F059 | List: |
| References | |
| FOIA-84-487 QI-QP-11.4-23, NUDOCS 8507080164 | |
| Download: ML20140F145 (4) | |
Text
{{#Wiki_filter:(. lb i .w 4 i-l l I INSTRUCTION I ISSUE l I REVISICN PAGc
- sTEXAS UTILITIES GENERATING CC. I NUMBER
[ DATE l .;bi CPSES l I f0V 19 1991 ! l g{Q s P-11.4-23 0 I of 4 l l ___.- a > n ~. PR ARED BY: ., @ w M //!/ 3/ ^ [ ~5 [.' REINSPECTION OF .I // 8 //p~[ / N li CA. /r f/ COATED STEEL SUBSTRATES / APPROVED BY _/. / l FOR WHICH DOCUMENTATION i IS MISSING OR DISCREPANT: ef /. APPROVED BY: hw
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DATE '
1.0 REFERENCES
i 1-A Nonconformance Report Numbers C-81-01370 and C-81-01567 ~ through C-81-01373 l 1-3 CP-QP-18.0, " Inspection Reports" 1-C CCP-30, " Coating Steel Substrates Inside Reactor Buildings l l and Radiation Areas" l i i 1-D CCP-30A, " Coating Steel Substrates Inside Reactor Buildings and Radiation Areas" ^ i l 1-E QI-QP-11.4-1, " Inspection of Steel Substrate Surface Preparation and Primer Application and Repair" i 1-F QI-QP-11.4-5, " Inspection of Steel Substrate Seal and Finish Coat Application and Repair" 2.0 GENERAL .y j 2 i 2.1 PURPOSE AND SCOPE This instruction shall describe methods utilized by Quality j Control in the measurement of the dry film thickness (DFT) i and adhesion to steel substrates of existing coating applica-I -] tions described in Reference 1-A using the Mark II Tooke Gage and the. Elcometer 106 Adhesion Tester respectively. The above test is destructive in nature which will i necessitate a repair of the coating system at each spot test location. n l 3.0 INSTRUCTION b l 6 For each 100 square feet of coated surface for which j documentation is missing.or discrepant the following tests shall be performed: l ST. l W 9507000164 850311 PDR FOIA HUGE 84-487 PDR i l 4 T*,GCC CA % *ee. 4
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~ INSTRUCTION ISSUE REVISION PAGE ,i TEXAS UTILITIES GENERATING CO. CPSES h QI-QP-11.4-23 0 NOV 15 @g-2 of 4 li -1 3.1 ,TOOKE TEST (SCRATCH TEST) A scratch test shall be made using a calibrated Mark II Tooke Inspection Gage. Before each shift's testing the Tooke gage shall be compared to readings obtained using an Elcometer Inspection DFT gage i or equivalent. The average of five readings obtained with the 2X tip of the Tooke. gage shall not vary by more than 1 20.3 mils from readings.obtained with the Elcometer Inspection DFT gage. Five separate readings shall be taken J, for each 100 square feet area or less. Dry film thickness shall be as follows: Averagi Any Sinole Readino of Five CZ 11 Primer 1.5 - 5.5
- 2. 0 - 4. 5 06 1.5 - 5.5 ~
2.0 - 5.0 Total Coating System 7.0 - 11.5 7.0 - 11.0 NOTE 1: Steel substrates identified in Reference 1-A on which only the primer coat has been applied (no seal or topcoat) shall be inspected for DFT per Reference 1-E. However, these surfaces must still H be inspected per Paragraph 3.2. 3.2 ADHESION (PATCH) TEST .} The QC inspector shall perform an Adhesion (Patch) Test on 3 each 100 square foot area which is scratch tested per ~~ Paragraph 3.1. A calibrated Elcometer 106 Adhesion Tester shall be used to measure the tensile strength of adhesion of the coating system to the steel substrate. Each test shall '.a consist of three individual dollies tested to failure. Criteria: The minimum acceptable strength per dolly .j, shall be 200 psi. NOTE 2: The above adhesion test f' equency apolies only to r A", ~ liner plate. For supports and miscellaneous steel items, an adhesion test shall. consist of only one dolly tested to Failure, j i u la k 'epp lf '
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f[ -{- ~ q pg- 'A INSTRUCTION ISSUE REVISION PAGE NUMBER DATE-TEXAS UTIUTIES GENERATING CO. A CPSES %/ QI-QP-11.4-23 0 NOV 19 Gm 3 of 4 s ~ 3.3 DOCUMENTATION Results of inspections per Section 3.1 and 3.2 shall be. documented on Inspection Report, Attachment 1, in accordance with Reference 1-B. The completed IR shall be forwarded to the PPRV for retention. ~ 3.4 REPAIRS Repairs of each coating area either scratch-tested by the Tooke gage or adhesion tested shall be performed in accordance with Reference 1-C or 1-D and reinspection of repaired coatings shall be in accordance with Reference 1-E or 1-F. I .-.) c; a 1 4 C (G TUGCC CA 9
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4.' p'. b .2 O ~ INSTRUCTION ISSUE REVISION PAGE NUMBER DATE ~ TEXAS UTILITIES GENERATING CO. CPSES O QI-QP-il.4-23 0 NOV 1 S 1981 4 of 4 l lV }. ATTACHNENT 1 COM AN CHt. VfX STEAM ELECTRIC S TATICN w or INSPECT 10N REPORT lmo. If5T'ocren1anc. .wir.r. car.ca w. pr.itas/ sraxr ac ccs w.c= PROTECTIVE COATINGS 3l jnu. o.c ccc. a arv. a cnanc.c no. g-m ca mr cu,.a..cnr. nc ytc.no. duv. Qt-QP-11.4-23. Rev. AS-31 a r.:: m a a a w w - a P ; m e a w ,,c, aP:r,;;r,_ j laSP. RE34A.Ta O ins =cr= co-ures, au. am.:canc ire== sarwacta=v
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,,,, a funt., e I PRIME CCATO SEAL OR FINISH CCATO I I i l i ii l i 1. I perfom Tooke test oer Para. 3.1 ta detemine thickness l Ii i l of primer. l l l [ I RECORD: !!inimse Spot Test Primer: l l l l l Maximum Spot Test Primer: l l l I I Average Spot Test Primer: () l k{i l Miniman Spot Test Total System: p ll l l t'axirium Spot Test total System: l l l l l Average Soot Test Total System: l l l l ~ l l l l l
- 2. I Perform Adhesion test cer Para. 3.3.
l l l l IDECORO: Adhesien Test Strencth in osit i ll l I colly 81: Deny s2: Dolly 73: lIi l- -1 I i j; I I i 1. I ll l lI i i i ! l l l l l l l l l I e I i i i I l h i a-io es.mes.rna 1 et i
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