ML20087B029

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Rev 27 to Procedure QI-QP-11.4-5 Re Visual Defects Insp & Dry Film Thickness.Related Info Encl
ML20087B029
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 11/08/1983
From:
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML20087B027 List:
References
FOIA-84-2 QI-QP-11.4-5, NUDOCS 8403080327
Download: ML20087B029 (6)
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~ 1 3.6.2 Vi su_al Dofects Inspection

  • 4 The Inspecte: shull grfcm a visual incMetion of th; cerd finish cor.t ed substrate surface in accordance with th?

following :

a) Rurts/ sags - Runs or sags in which the DFT of tha total coatin2 systen is 15.0 mils or less thick. ditch shour no evidence of cuderacking, are acceptable. Those great 6r than 15,0 :: tis shall be repaired in accordance with Refenance 1-B or 1 C. .

b) Skips / decagad areas / dry sprey/ over spray / gress di scontintF. ties such as holidays. Voids, and bubble.S .

are not acceptable.

c) Pinholes - accepte.ble to the extent allowed by 4 Attachment 2. -

d) Contan;ination - Labedded foreign materials unacceptable, ,

3.6.3 Dry Film Thickness (DFT) -

The Ins pector shall perfom a DFT of the cured coating system 1 5ee Hote 5). .A calibrated 0-25 Eleoneter Inspector DFT Gage Model III/IE, or ec.uivalent, shall be- - ---

used, 55aparate spot measurentnts (See tiote 1) spaced evenly cver the structure (See Note 2) shall be taken, Since.the magnetic sage is sensitive to ceometric discontinuities irt the steel, measurements less than 1 inch from an edge or a, hole shall be avoided where possible.

The average DFT of the total coating system shall .be . a .

mininin of 6.0 mils and a maximum of 13.0 mils. The spat -

test DFT of the total coating _ system shall be a minicam of

  • 6.0 rails and a maxiru:n of 15.0 mils (See Note 4), i The fini sh coated syste shall exhibit full
  • hiding" properties of the primecoat.

NOTE 1: A spot r:casurenent is a series of three measure-

.' nonts in the same general area. The probe should be noved a short distance for each gage reading.

Discard ony unusually high or low gage reading that canno.t A. a repeated consi stently. Take an '

avera92 of these three gage readings es. one spot '

measuronent. '

FDR INDHAilull DNLY.

. _ . _ , _ ..__ . . . . - - --. - . - ---- - l INSTRUCTION REVISION N 'PI

. Tert.s (muTIES GENERKONG CO.

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.QI-QP-11.4-5 f,27 [iGV,81983 C Attachment 2 - -

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-TOTA NtNMA 0F AuguA91.E POIRTS_OF DISCOATINUITY '

~53rVACE ARdA COND. 'C' -

BEIfCi COATED CCMGRCIALt.Y  :

(S0. FT.) CONTINUQUS 10 5 ' 1 i i 10-50 10 *'-

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1 50-100 20 l '"

100-500 30 2.

500-1000 50 1000-5000 75 -

s Cross Discontinuities - None Allowed.

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Q1-QP-11.4-5 ,

sov sW j PREPAAfD BY: e-

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IN5?ECTION OF STEEL -

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SUBSTRATE PRIMER REPAIR AND SEA. MD APTR3VED 8 . . ,m ///7//3 DA 7U I

FINISH C0AT APPLICATION !I

. AND REPAIR '

APPROYED 8Y: . b6 N \

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REFERENCES 1-A - Q1-QP-11.4-1. " Inspection of Steel Substrate ~ Surface Preparatino end Primer Application and Repair" , .

1-B CCP-3n,

  • Coating Steel substrates Inside Reactor Buildings .

and Radiation Areas , ,

1-C CCP-30A, ' Coating Steel Substrates inside Reactor Buildings'

.and Radiation Areas" 1-D CP-QF-18.0, " Inspection Reports"

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"QC Verification of Protective Coatings F 1-E Qt4P-11.4-22 Unique Identification Number Verification" 1-F CP-QP-15.0, " Tagging Systcas. C0MOL.E0 C0)Y..

z.o caCRAt. CONTROL No. WT. m.j._ -

2.1 PURICSE AMD SCOPE ,

The purpose of this ' instruction is to outline m thods i utilized by Quality Control personnel in inspection of i

' priser repair and seal and fini sh coat application and i 8

repai r. .

I  :

3.0 INSTRUCTION __

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, .ual inspection of painted surf aces as addressed 'by'.this inst ruction shall be mace at a pproximately an arms length j

' frein the su rface being i n t. pect ed . The area of ins yrdion j snait be adequately hghted during the inspection activity.

Adequate lichtirH; is defined as the minicum light produced.  !

by a two (2) cell battery flashlight. Flashlight shall be held at 90* to the surf ace during visual inspection. -

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Q1-QP-11.4-5 27

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3.4 SURVEILLANCE OF SFJL OR FIN!SH CDAT APPLICATION The Inspector shall verify that hose length is less tfian i 75 feet. If a brusn technique is used, the inspector shall verify that a short bristle brush is used and rebrvsking is .

avoided.

The inspector shall also verify that the seal . cost (if present) is sol vent wiped with Phenoline 305 t,hinner er.

Kyloi prior to finish coat application.

3.5 DOCUMENTATION OF PRIMER INSPECTION #fD FINISH CQAT .

PRE-APPLICATI0M/ APPLICATION INSPECTIONS .

Results of inspections described in Sections 3.1. 3.3; mad 3.4. shall be doctsuented on an Inspectica Report -(% -

Attachment 1, in accordance 4th P.eference 1-D. The.

cmpleted IR shall be forwanted to the PPRV for rutertion. i NOTE 1: All items within the sc u of endt inspectica which ,are determined by we Inspector to te sati sfactory may be docmw nted on e single IR.  ;

s 3.6 .. FINISH &T FINAL ACCEPTANCE IMSPECTION TN inspector shall perform a final acceptance' ittspection of e6ch fini sh coated item in accordence with - Paragraphs  ;

3.5.1 through 3.6.6. For finish coated conteirunent . liner i

'p IA 2 su rf aces. the final acceptance inspection shall ts l F

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per.$rmed 'at the congletion of the curing period. . For all other finish coated iteres. the final acceptance inspection shall be perforined insnedi ately prior to turnover of each area wi thin the contairinent *butiding and should be coordinated with Area Managesnent. In 6ddition, finish .

coated cent At ranent liner surfaces .s hal l be visually .!

reinspected in accordance with Peregraph 3.6.2. immediately  ;

prior to turnover of each containment area. -,; ,

3.6.1 [inish Coat Core J The QC Inspector may perfom a final acceptances. inspection after a mininun topcoat cure of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or minimum cure '

i for recoat as stated in Refe rence 1-8 or 1-C, Section -

4.4.21 Paragraph 4, which ever is greater. A tal.ibrated noncercury filled dry bulb thernxmeter, a calibrated teciperature recorder, or local weather station say be used.

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