ML20140F104

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Rev 7 to Procedure QI-QP-11.4-23, Reinsp of Seal-Coated & Finish-Coated Steel Substrates for Which Documentation Is Missing or Discrepant
ML20140F104
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 07/05/1983
From: Williams H
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML20140F059 List:
References
FOIA-84-487 QI-QP-11.4-23, NUDOCS 8507080127
Download: ML20140F104 (5)
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Text

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q l REVIS!CN l ISSUE

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i-INSTRUCBCN PAGE SExAS untmES GENERATING CC.

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DATE i

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cPSES H*

l QI.QP.11. 4 23 7

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JUL 0 51933

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i REINSPECTION Cf SEAL PREPAREDBY;

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COATED AND FINISH

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j C0ATED STEEL SUBSTRATES APPROVED BY
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1 FOR WHICH 00Ct.NENTATION v

OA E IS MISSING CR DISCREPANT

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.j APPROVED BY:

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1.0-REFERENCES 1-A

. Nonconformance Report Numbers C-8101370 through C-8101373 and C-81 01567

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i 1.B CP.QP 18.0, " Inspection Reports" l Eh 1.C CCP-30

" Coating Steel Substrates Inside Reactor Buildings

! c'j and Radiation Areas" 4

~.'j-10 CCP 30A, " Coating Steel Substrates Inside Reactor Buildings Of f and Radiation Areas"

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1.E QI.QP.11. 4 1,

" Inspection of Steel Substrate Surface i

i Preparation and Primer Application" cl d

1.F QI.QP 11.4 5,

" Inspection of Steel Substrate Primer Repair and Seal and Finish Coat Application and Repair" 3

1.G CP.QP 15.0, " Tagging *

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2.0 GENERAL 2.1 PURPOSE AND SCOPE

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This instruction shall describe methods utilized by Quality i

Control in the measurement of the dry film thickness (DFT) f and adhesion to steel substrates of existing seal or finish coat t.pplications described in Reference 1.A using the

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Mark I.I Tooke Gage and the Elcometer 106 Adhesion Tester

,i respectively.

The above tests are destructive in nature i

which will necessitate a repair of the coating system at ljL each spot test location.

4 3.0 INSTRl[.1 *.ON

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For 5 ch seal or finish coated steel item or component for which dccumentation is missing or discrepant, the tests 7+

discus;ed in Paragraphs 3.1 and 3.2 shall be performed at t

the frequencies indicated therein.

l..,2 TUGCC CA 8507080127 850311 PDR FOIA HUGEB4-487 PDR

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INSTRUCTION '

ISSUE

- REVISION PAGE Tll TEXAS UTIUTIES GENERATING CO.

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CPSES 2 of 5 d,cR QI-QP-11.4-23 7

M 0 51953

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TOOKE TEST (SCRATCH TEST) y

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3.1

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The scratch. test shall be performed by using a Mark,II Tooke Inspection Gage using a 2X tip.

v.l A daily confidence check shall be performed to insure accuracy

  • of the Tooke Gage. The gage shall be inspected for damage,
i tip ware and a scratch shall be made with the Tooke Gage and J.I compared to a reading obtained using a calibrated E1cometer i.

Inspection DFT Gage or ' equivalent. -The reading obtained 31 with the 2X tip of the Tooke Gage shall not vary by more 1

than 2 0.5 mils from that. obtained with the Eclameter 1

Inspection DFT Gage, l.

.T Five separate Tooke readings spaced evenly over each seal or l

finish. coated item. (See Note 1) shall be taken.

Dry film y

thickness shall be as follows:

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Average 1

Any Single Reading of Five

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'l CZ 11 Primer 1.5 - 5.5 2.0 - 5.5

'l D6 1.5 - 5.5 2.0 - 5.5

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Total Coating System 7.0 - 11.5 7.0 - 11.0 In the eventthat 'iny~ reading (s) is found to be outside of 9 --

the acceptable primer thickness range, additional readings M.

shall be taken to determine the extent of the unacceptable i

area.

Dimensions and locations 'of unacceptable areas and results of additional testing shall be documented in the

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" Remarks" section of Attachment 1.

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NOTE 1:

For small areas.of seal or finish coated surfaces, five separate readings shall be.taken. For items "f. e with ~ less ' than 5 ~ square feet of exposed coating, 4

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a minimum of three separate readings shall be taken.

For larger -' seal or finish coated areas sj

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such. as containment liner plate, five separate

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readings randomly spaced shall be taken for each

.j 100 square feet of coating.

.h NOTE 2:

Seal or finish coated surfaces meeting the following descriptions-shall not be subject to 4

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testing with the Tooke gage:

a.

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

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INSTRUCTION ISSUE REVISION PAGE

- 3'd NUMBER DATE TEXAS UTILITIES GENERATING CO.

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CPSES QI-QP-11.4-23 7

3 of 5 f.3 JUL 0 51983 d*

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Items that due to their size or configuration d

will not accomodate testing with a Tooke gage.

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Areas or items which have acceptable Primer I-Records shall be tested with a Eclemeter

,f Inspection DFT Gage or equivalent for total system.

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1 3.2 ADHESION (PATCH) TEST 31.j The QC inspector shall perform an Adhesion (Patch) Test on 12 each seal or finish coated item (See Note 1). A calibrated J

Elcometer 106 Adhesion Tester shall be used to verify that f

the minimum acceptable tensile strength of adhesion of the

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-coating system to the steel substrate has been attained.

'4 Each test shall consist of three individual dollies tested

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to failure. (See Note 2 and 3 below.)

NOTE 1:

For larger seal or finish coated areas such as containment building liner plate, the Inspector shall perform one test for every 500 square feet

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of coating.

E NOTE 2:

For items with total. exposed surface area of 10 t ;-

e; square feet or less, each adhesion test ' shall

-1 consist of only one dolly tested to failure.

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NOTE 3:

Seal or finish coated surfaces meeting the i

following descriptions shall not be subject to

,1, adhesion testing:

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a.

Areas or items which are inaccessible due to

.f installation of permanent items or equipment.

f-j b.

Items that due to their size or configuration 3;

will not accomodate testing with an E1cometer J

106 Adhesion Tester.

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Acceptance Criteria:

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The minimum acceptable strength per dolly shall be 200 psi.

I If a dolly should fail the minimum strength criteria, the j-following additional adasion testing shall be performed:

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On large surface areas such as liner plate, four j.

addi tional dollies shall be adhesion tested at

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approximately one foot from the failing dolly and spaced radially at approximately 90 degree intervals.

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INSTRUCTION ISSUE PAGE REVISION

.'!j TEXAS UTILITIES GENERATING CO.

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4 of 5 JUL 0 51953 3:

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On components with smaller surface area such as 1!

miscellaneous steel or supports (conduit, cable tray, l

or pipe),

two addi tiont.1 dollies shall be adhesion i)

M tested at one foot or less frcra the failing dolly with g

one located on each side of it.

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./ j If any of the additional dollies should fail the minimum

~Il strength criteria, additional dollies shall be placed and d

tested in accordance with 3.2 or as applicable until area of loss of adhesion is isolated.

This area (s) of coating

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shall be removed to the substrate, apd new coatings applied

..a in accordance with Reference 1-C or 1-D.

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..;)4 3.3 STATijS INDICATORS h

During backfit activities when items are unsatisfactory and cil could be inadvertently recoated with the unsatisf actory

'.j condition remaining, a reject tag shall be used in accordance t

with Reference 1-G.

A reject tag shall be placed on the

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item or area referencing the unsatisfactory Inspection Report s:T number and applicable NCR.

.m3 3.4 00ClNENTATION

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Results of inspections per Paragraphs 3.1 throu;gh 3.2 shall U

be documented on Inspection Report, Attachment 1,

in i

accordance with Reference 1 B.

The completed IR shall be forwarded to the. PPRV for retention.

For inspections of

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coated containment liner

surfaces, the Inspector may document one IR for each 500 square feet of surface area.

3.5 REPAIRS

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Repairs of each coating area either scratch-tested or

'.it adhesion tested shall be perfomed in accordance with j

Reference 1-C or 1-0 and reinspection of repaired coatings

-i shall be in accordance with Reference 1-F.

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j 3.5 MAPPING OF LARGE AREAS For large areas (such as reactor containment liner plate)

.j each IR No.

and the inspection area to which the IR

'M corresponds shall be indicated on the map drawing.

4 The map drawing shall be maintained by the QC Supervisor, 3

t or his designee, untfi the entire surface has been inspected

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as required. Complated map drawings shall be transmitted to

.j the Pemanent Plant Records Vault.

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ISSUE INSTRUCTION -

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NUMBER DATE

  • TEXAS UTILITIES GENERATING CO.

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QI-QP-11,4'23' 7

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'1 CCM AN CHE PCAk STEAM E'.ECTRIC STATICN

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INSPECT 1CN REPORT jac.

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I tTDs 8EIL o.4 INSPECTION ATTRISUTES

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l SEAL CR FINISH C0AT l Il I

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1. I Perform Tooke test per para. 3.1 to determitne thickfiessl il I

'..p.j 1 in mits of primer and total system (docJurent one set i i l I

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i of readings for each 10014. ft, when testing Contain. I li I

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Q RECORD:

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Nar. Soet primer:

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g.j 1Arg. Soot Primer:

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'I win. Soot Tot. System:

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her. Scot Tot. System:

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f IAve. Soot Tot. System:

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2. I Perform Adhesten test per ears 3.2.

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I aECOR0: Adhesion Test Strength in est 3 1 i 1

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Dolly #1:

Colly #2:

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