ML20140F125

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Rev 3 to Procedure QI-QP-11.4-23, Reinsp of Seal-Coated & Finish-Coated Steel Substrates for Which Documentation Is Missing or Discrepant
ML20140F125
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 01/20/1982
From: Cummings R, Scott B
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML20140F059 List:
References
FOIA-84-487 QI-QP-11.4-23, NUDOCS 8507080153
Download: ML20140F125 (5)
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. d INSTRUCTION ISSUE l

. ( .gTEX S UTILITIES GENERATING NUMBERCO. l[, REVISICN CATE l PAGc.

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-I ' PREPARED BY: , 1 - / '/-8 2.

REINSPECTION OF SEAL 7 ~ OATV_

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COATED AND FINISH COATED STEEL SUBSTRATES APPROVED B : ffg g! ,

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FOR WHICH DOCUMENTATION /

IS MISSING OR DISCREPANT DATE'

1.0 REFERENCES

1-A Nonconfomance Report Numbers C-81-01370 through C-81-01373 and C-81-01567 1-B CP-QP-18.0, " Inspection Reports" 1-C CCP-30, " Coating Steel Substrates Inside Reactor Buildings and Rad.iation Areas" 1-D CCP-30A, " Coating Steel Substrates Inside Reactor Buildings '

{. . and Radiation Areas" 1-E QI-QP-11.4-1, " Inspection of Steel Substrate Surface Preparation and Primer Application" 1-F

' QI-QP-11.4-5, " Inspection of Steel Substrate Primer Repair and Seal and Finish Coat Application and Repair"

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9 2.0 GENERAL 2.1 PURPOSE AND SCOPE

- This instruction shall describe methods utilized by Quality Control in the measurement of the dry film thickness (DFT) and adhesion to steel substrates of existing seal or finish coat applications described in Reference 1-A using the Mark II Tooke Gage and the Elcometer 106 Adhesion Tester respectively. The above tests are destructive in nature which will necessitate a repair of the coating system at

, each spot test location.

3.0 INSTRUCTION I

For each seal or finish coated steel item or component .for which documentation is missing or discrepant, the tests discussed in Paragraphs 3.1 and 3.2 shall be perfomed at the frequencies indicated therein.

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INSTRUCTION REVISION ISSUE #

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TEXAS UTILITIES GENERATING CO.

'. .CPSES

QI-QP-11.4-23 3 JAN 2 0 1982 2 of 5

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3.1 TOOKE TEST (SCRATCH TEST) -

The scratch test shall be perfomed by using a Mark II

, Tooke Inspection Gage using a 2X tip.

Each test made with the Tooke gage shall be compared to a reading of the total sy' stem obtained using a calibrated

. Elcometer Inspection DFT gage or equivalent. The reading obtained with the 2X tip of the Tooke gage _ shall not vary by more than 0.5 mils from the reading obtained with the E1cometer Inspection DFT gage. Any Tooke gage reading which is not within 0.5 mils of the corresponding DFT gage reading shall be discarded.

'. Five separate readings spaced evenly ov.er each seal or finish coated item (See Note 1) shall be taken. Dry film thickness shall be as follows:

f.. Average NjJ Any Single Reading of Five CZ 11 Primer . 1.5 - 5.5 2.0 - 5.5 1.5 - 5.5 O6 2.0 - 5.5 q Total Coating System 7.0 - 11.5 7.0 - 11.0 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

'ir area. Such additional testing shall be documented. in the

" Remarks" section of Attachment 1. _.

NOTE 1:- For small areas of seal or finish coated surfaces, -

five 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.

2 3.2 ADHESION (PATCH) TEST -

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.The QC inspector shall perform an Adhesion (Patch) Test on each seal or finish coated item (See Note 1). A calibrated Elcometer 106 Adhesion Tester shall be used to measure the tensile strength of adhesion of the coating system to the

., p steel substrate. -Each test shall consist of three. individual

} W+ dollies tested to failure.

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INSTRUCTION REVISION ISSUE AGE

- NUMBER DATE 13 TEXAS UT1UTIES GENERATING CO.

,, 7;y, CPSES al-QP-11.4-23 3 ,JA N 2 0 pgp 3 of 5 NOTE 1: For larger seal or finish coated areas such as i containment building liner plate, the Inspector shall perfonn one test for every 500 square feet of coating. ,

1 Acceptance Criteria: l

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The minimum acceptable strength per dolly shall be 200 psi.

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

, 1) On large surface areas such as liner plate, four additional dollies shall be adhesion tested at approximately one foot from the failing dolly and

spaced radially at approximately 90 degree intervals.
2) On compon with smaller surface area such as miscellaneoentsus steel . or supports (conduit, cable tray, d.. or pipe), two additional dollies shall be . adhesion tested at one foot or less from the failing dolly with ,

one located on each side of it. ,

,  ; If any of the additional dollies should fail the minimum i strength criteria, the test results shall be promptly reported to Civil Engineering for evaluation and resolution.

Test results on the additional dollies shall be documented in the " Remarks"'section of the IR.

In the case in which all of th'e addktional NOTE 2: l dollies pass the minimum strength criteria, test failures on any of the original three dollies shall still be doctsnented as " unsatisfactory" on the IR. -

3.3 DOCUMENTATION 3 Results of. inspections per Paragraphs 3.1 through 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. For inspections of coated containment liner surfaces, the Inspector may document- one IR for each 500 square feet of surface area.

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INSTRUCTION ISSUE OAM 2

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..'. CPSES QI-QP-11.4-23 3 4 of 5

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3.4 REPAIRS Repairs of each coating area either scratch-tested or adhesion tested shall be perfomed in accordance with

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Reference 1-C or 1-D and reinspection of repaired coatings

shall be in accordance with Reference 1-F.

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' ij' INSTRUCTION REVISION ISSUE PAGE

[; NUMBER DATE TEXAS 1.JTILITIES GENERATING CO.

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couANCMC PEAK 3*EAM E
.ECTMIC STai1CN m.e - y INSPECTION REPCMT {* .l

. Ton occmpr.ca .ca.w.rs.ar.o= so. g PRCTECTIVE CCATINGS Jamoa, sm.,ca as ms.sur.:n .i maar. gar.. (au. c ;oc. e as . a cm a ac. p ms a u-. ca s. .ccu. =s.  ;

AS-31 ,1 ,I QI-CP-11.4-23. Rev. , ,l s CI"suNr- C@"cIhf*" CTa$ NcT C Deo= C"dma ,

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INSPECTION ATTM19UTES q g

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. I SEAL OR FINISH CCAT I Ii 1

i - I i l  ! l L. I Perform Toote test per para. 3.1 to deter aine thicxpessi ii j

. I in sils of primer and total systen (doc:anent one set l I I I i of readings for esca 100 sc. ft. unen testing contain- l l l l l

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l ment liner) l1l 4 i

. RECORD: 1 1 i i i i 1 l 2 l 3 1 4 15 ill I Win. Soot Pr*mee: l l 8 i Max. Soot Prteert i i l i i l iAvg. Scot Primer: i i ! 1 1 Min. Soot Tot. Systse: I lI i  !

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2. I Per*otw Adhesion test see ears. 3.2. I f I I i 1 RECORD: Adhesion Test Strength in esi: 1 I i l  !

! Dolly #1: Colly #2: Dolly #3 i i i i  !

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