ML20140F090

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Rev 9 to Procedure QI-QP-11.4-23, Reinsp of Seal-Coated & Finish-Coated Steel Substrates for Which Documentation Is Missing or Discrepant
ML20140F090
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 07/29/1983
From:
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML20140F059 List:
References
FOIA-84-487 QI-QP-11.4-23, NUDOCS 8507080105
Download: ML20140F090 (6)
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a lPWM h INSTRUCTION ISSUE CAT'E PAGE VEXAS UT1UTIES GENERAT1NG.CO. NUMSER [ i Q s-CPSES 4 j I QI.QP.11.4 23 g oy 1 of 6 PR1'JARED BY-

. RENSPECTIOW OF SEAL j 7' '/

,MIE COATED AND FINISH C04TED STEil. SUBSTRATES APPeovED BY: ,

", 7 f[M FOR. WHICH DOCUMENif. TION n IS'(ISSINF OR DIStREPANT APPROVED BY- . =0

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'REFERE}CES { f', ei  :! 'h,b O Eusb 1.A

  • Nonconfomance Report. Numbers ' C.8101370 through C.8101373 5and C 81 01567 .

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' CP.QP.18.0, "Inspectice. Ruhrts" .

- 1.C .CCP 30, " Coating Steel Substrated' Inside Reactor ' Buildings and Radtation Areas" l 10  ! t'.CP 30A, " Coating Steel Substrates Inside Reattdr Buildings

,e ind Radiation Areas" U m 1 -

1.E , 111. Q P.).1 . 4 1 , " Inspection of Steel Substrate Surface Preparatioq and Prir.er Applicatiog" _

1.F QI+QP.11.4.5, ' " Inspection of Steel Substrate Primer Repair and Seal and Finish Coat AppMcation and Repair" 1.G y CP.QP.16 4 "Tagpng'5ystem"  :

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2.0 n' GENERAL  !

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2.1 , NRfoit AND SCOPE '

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Ttfs instruction shall descr.ibe methodn utilized by Quality

. . Cont.rol ir 'the measurement.of th# cry film thickness (DFT) i and adhesion to' steel substrates of existing seal or finish

". coat app 1Teations describe 1( in Reference 1.A using the Mark Il ~ Teoksi Gage and the E1cometer 1GG' Adhesion Tester

  • respectively.1.The above tests are destructive in nature
  1. fch (will ndessitate a repair of the coating system at '

each spot test location.

3. 0 ^ IN.STRUCTION T- , ,

Fus e'ach'iell or finish coated steel item or ccnponint for which documentation is missirig or discrepant, the tests

e Mccusseo ~1n Paragraphs 3.1 and U2 shall be perfomed at the fregttencies indicated therein.# ,( \

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B5C7050105 850311i " 5 PDR+ FOIA HUGE 84-487 -PDR L" b s s . t r.

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  • INSTRUCTION ISSUE PAGE REVISION DATE

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, TEXAS UTILITIES GENERATING

  • CO.

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c .- CPSES 2 of 6 i QI.QP.11.4-23 9 m291983 .

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3.1 TOOKE TEST (SCRATCH TEST) i .,

The scratch test shall be perfomed by using a Mark II

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Tooke Inspection Gage using a 2X tip. ,

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A daily confidence check shall be perfonned to insure accuracy
  • of the Tooke Gage. The gage shall be inspected for damage,

,] tip were and a scratch shall be made with the Tooke Gage and i compared to a reading obtained using ,a calibrated Elcometer

! Inspection DFT Gage or equivalent. The reading obtained 1*  ;

with the 2X tip of the Tooke Gage shall not vary by more

.j than 2 0.5 mil s from. that obtained with the Ecloseter Inspection DFT Gage. -

', : .4,] Five separate Tooke readings spaced evenly over each seal or finish coated iten (See Note 1) shall be taken. Dry film j ,

thickness shall be as follows:

Average

, Any Single Reading of Five D
. CI 11 Primer 1.55.5 1.55.5 D'6 1.5 5.5 1.5 5.5 3

Total Coating System 7.0 11.5 7.0 11.0

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In the event that any reading (s) is found to be outside of

- the acceptable primer thickness range, additional readings ,

shall be taken to determine the extent of the unacceptable 2

. area. Dimensions and locations of ' unacceptable areas and results of additional testing shall be documented on I Attachment 1. -

. . In the event that the average of the area is unacceptable

'j due to unacceptable spot readings, the unacceptable spots

shall be isolated as described above. . Additional spot
readings shall be -taken equal to the ntaber of unacceptable spot readings and the average recalculated. Results of these

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additional readings shall be doctamented in the " Remarks" t*; area of the IR. .If the recalculated average is acceptable,

.; the IR shall be so marked with 'an explanation in " Remarks" stating that " average recalculated , now acceptable", or

. wording to that effect. If the recalculated average is unacceptable, - the unacceptable spots shall be isolated j (as described above) and the above re. averaging process

repeated.

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INSTRUCTION REVISION ISSUE PAGE

NUMSER DATE TEXAS UTILITIES GENERATING CO.

m CPSES i4f} QI.QP.11.4 23 g R 1. 9 E 3 of 6 t

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! NOTE 1: For small areas of seal or finish coated surfaces, five separate ' readings shall be taken. For items with less tha- 5 square feet of exposed coating, a minimum of three separate readings shall be taken. For larger seal or finish coated areas such as containment liner plate, five separate

readings randomly spaced shall be taken for each 100 square feet of coating. ,
. NOTE 2
Seal or- finish coated surfaces meeting the t following descriptions shall not be subject to testing with the Tooke ' gage:

I a. Areas or items which are inaccessible due to l-, ,

installation of permanent items or equipment.

' i b. Items that due to their sile or configuration j will not accomodate testing with a Tooke gage.

~~ c. Areas or items which have acceptable Primer hs Records shall be tested wi th a Ecloseter i.

Inspection DFT Gage or equivalent for total i system. .

i 3.2 ADHESION (PATCH) TEST

- The QC inspector shall perform one Adhesion (Patch) Test for every 500 sq. ft. for coating on .the containment liner plate. A calibrated E1cometer 106 Adhesion Tester shall be

.' used to verify that the minimun acceptable tensile strength

,- of adhesion of the coating system to the steel substrate has il been attained. Each test shall consist of three individual

, - . dollies tested to failure. -

Areas or items which are inaccessible-due to installation of pennanent items or equipment.

H' Acceptance Criteria:

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The minimum acceptable strength per dolly shall be 200. psi.

If a -dolly should fail the minimun strength criteria. the following additional adhesion -testing shall be perfonned:

l Four - additional dollies shall be - adhesion tested at

'5 approximately one foot from the failing dolly and spaced 5

~$! radially at approximately 90 degree intervals.

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- INSTRUCTION ISSUE N

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. M UTIUTIES GENERATING CO.

e CPSES

]I.QP.11.4 23 g JUL 2 91CB3 4 of 6 i:12 P

If any of the additional dollies should fail the minimum strength criteria, additional dollies shall be placed and tested in accordance with 3.2 or as applicable until area of loss of adhesion is isolated. This area (s) of coating shall be removed to the substrate, and new coatings applied in accordance with Reference 1.C or 10.

3.3

^

. .[ STATUS INDICATORS During backfit activities when items are unsatisfactory and could be inadvertently recoated with the unsatisfactory

- condition remaining, a reject tag shall be used in accordance

, with Reference 1.G. A reject tag shall be placed on the

" item or area referencing the unsatisfactory Inspection Report

.i nunber and app 1fcable ER.

3.4

'", DOCtJMENTATION Results of inspections per Paragraphs 3.1 through 3.2 shall be documented on Intpec_ tion Report, Attachment 1, in

. h; accordance with Reference 1.B. The completed IR shall be forwarded to the PPRV for retention. For inspections of coated contaiment liner surfaces, the Inspector may

- document one IR for each 500 square feet of surface area.

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1 TEXAS UTILITIES GENERATING CC.

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3.5 REPAIRS l' Repairs of each coating area either scratch-tested 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.F. .

'! 3.6 MAPPING OF LARGE AREAS .

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For large areas (such as reactor containment liner plate) 2 each IR No. and the inspection area to which the IR f ~ corresponds shall be indicated on the map drawing.

The map' drawing shall be maintained by the QC Supervisor, or his designee, until the entire surface has been inspected as required. Completed map drawings shall be transmitted to the Pennanent Plant Records Vault.

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, k.j' ,., INSTRUCTION REVIS~N ' - ISSUE PAGE NUMBER DATc

-TEXAS UTILmES G2NERATING CO.

. CPSES

, gr_gp.11,4-23 g JUI. 2 9 1983 6 of 6

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._ Attachment 1 consamcat pr.,1x- STEAM 10.1:TMic snT!cu w w IKTECTICM REPORT ja .g tra as:mer.cn c.o r.rw.ar.ca e hru PRCTECE VE CCAU Nil 5 prno., nawa.AE wr.r.ac. m. inu. ce ,oc. a acv. a c.ames ac. i- m a . m o .s. .cm. % g A5-31 .1 ,1 O!-CP-11.4-23. Rev. J ,1 CI"mentdiYn DcMS"* CTON Ec"= UDaucc ron asNm.

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  • c sins e a MSPECTION ATTMISJ'E3 / ll

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I SEAL CR FINISH COAT I l! I l -

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1. I Perform Toote test per para. 3.1 to determine tFlicxnessi i ! l  !

y 1 in siis of ortmer and total systen (doc:.sment one set l I i l l .

6 of rsadings for eac.i 100 so. ft. wnen tasting Contain- ( l t I i h I ment finer) . l l l l l RECORD: 1 I i i t 1 I L I 2 3l415 l l l 1 i utn. Soot pe scar i i  ! l I l l l Max. Soot PMmeet i 1 1

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' Avg.' Soot P-1mer: l l l l l l I i Min. Soot Tot. Syste!i: I 1 l t I i  !

'Wax. Soot Tot. Systme: I -  ! i i i  !

' Ave. Soot Tot. Sntm: I L t i I l l l l 1 i l i i

2. I Per'orm Acesion test w cara. 3.2. I ' l i I i RECORD: Ae eston Test Strenoth in esi: I I i l i l Dolly #1: Dolly 82: Dolly 93 I I I I I i ! I l i i t i ! i i

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