ML20140F185

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Rev 1 to Procedure QI-QP-11.4-24, Reinsp of Protective Coatings on Concrete Substrates for Which Documentation Is Missing or Discrepant
ML20140F185
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 02/10/1982
From: Cummings R
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML20140F059 List:
References
FOIA-84-487 QI-QP-11.4-24, NUDOCS 8507080196
Download: ML20140F185 (6)
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J l INSTRUCTION ISSUE

,' NT EXAS UTILITIES GENERATING CO. l NUMBEA R SICN CATE O'

CPSES , .:

.'QI-QP-11. 4-24 ' 1 i EB 10 1c82: 1 of 6 j

  • PREPARED BY: N N REINSPECTION OF '

OATE PROTECTIVE C0ATINGS I ' '

ON CONCRETE SUBSTRATES I APPROVED BY: <-m?p d 2 -/g -8 2 l

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FOR' WHICH DOCUMENTATION !

IS MISSING OR DISCREPANT' /C .

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1.0 REFERENCES

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~1- A Nonconfomance Report r* c Al-01613 and C-81-01823 i

1-B CP-QP-18.0, " Inspection Nu@0R Reports" NMM ATl0L 0'*I"Y

) I 1-C CCP-40, " Protective Coating of Concrete Surfaces" i 1-0 OI-QP-11.4-10, " Inspection of Concrete Substrate Surface Preparation'and Coatings Application and Repair" i

2.0 GENERAL .

~ I 2.1 I

PURPOSE AND SCOPE '

[f This instruction sh 11 describe methods to be utilized by

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I Quality Control in the measurement of dry film thickness '

(DFT) and adhesion to concrete substrates of existing '

j concrete coatin' g applications described in Reference 1-A i

using the Mark II Tooke Gage and the Elcometer 106 Adhesion Tester respectively. The above tests are destructive in I nature which will. necessitate a repair of the coating system I at each test location. In addition, criteria for visual inspection, documentation, and mapping for each coated area l to be reinspected are described.

3.0 INSTRUCTION For all coated concrete surfaces for which documentation is

missing or discrepant, the inspection activities discussed l in Paragraphs 3.1 through 3.2 shall be performed as l indicated therein. l l

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LINSTRUCTION ISSUE REVISION PAGE TEXAS UTILITIES GENERATING CO.

CPSESv. '

QI.QP-11.4-24 1 FEB 10 1962 2 of 6 j ,

3.1 TOOKE TEST (SCRATCH TEST)

The scratch test of the REACTIC 1201 finish coat shall be performed using a Mark II Tooke Inspection Gage equipped with a 2x tip. Five separate readings spaced randomly over each , finish coated area of 100 square feet or less shall be taken. -

NOT'!: Tooke tests are not required to be performed on areas of concrete which have not been finish

coated with REACTIC 1201.

1 Actactance Criteria 1

i The acceptable range for ' dry film thickness of the REACTIC '

1201. finish coat is 3 mils minimum and 12 mils maximum. >

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In the event that any reading (s) is found. to be outside of the acceptable finish c'oa t thickness range, additional '

<> (. readings shall be taken' to determine the extent of the

  • unacceptable area. Results of additional testing shall be occumented in the " Remarks" section of Attachment 1.

3.2 ADHESION (PATCH TEST)  !

The QC . Inspector shall perform an Adhesion (Patch) Test on _

' each 500 square feet ~ or less of concrete surfaces which have been previously coated with surfacer only (NUTEC 11.or 115) or with surfacer and finish coat 4

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'(REACTIC 1201). A  :

Ta'11brated E1cometer 106 Adhesion Tester shall be used to l measure the tensile strength of adhesion 'of the coating to the concrete substrate. For> test areas of 300 square feet i

or less, each test shall consist of three (3) dollies i randomly spaced and tested to fa ilu re.' For test areas  ;

l greater than 300 square feet but less than or equal to 500 f

square feet, each test shall consist of one (1) dolly

", tested to failure for each 100 square feet or fraction 4

thereof.

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EXAMPLES: 1. For . test area of 450 square feet, test  !

5 dollies to failure. .  ;

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2. For test area of 350 square feet, test 4 dollies to failure.

I I 3 l 3. For test area fof 100 square feet, test  !

' 3' dollies to failure. i

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( ( l INSTRUCTION ISSUE REVISION PAGE

- TEXAS UTILITIES GENERATING CO.

CPSES -

l QI-QP-11.4-24 1 jFEB 10 1982 3 of 6

.3 Acceptance Criteria:

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

If a dolly should fail the minimum strength criteria, the

, following addi tional adhesion testing shall be performed:

Four (4) additional dollies shall be adhesion tested at approximately one foot from the failing dolly and spaced radially at approximately 90 degree intervals. If any of the additional dollies should fail the minimum strength cri teria, the test resul ts 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.

NOTE 1:

In the case in which all of the additional dollies pass the minimum strength cri,teria, test failures on any of the original three (3) dollies shall nevertheless be documented as " unsatisfactory" on the IR. .

3.3 REPAIRS Repairs of each coated area which has been destructively tested per Sections 3.1 and 3.2 shall be performed in accordance with Reference 1-C and inspected in accordance with Reference 1-0. -

3.4 OOCUMENTATION Results of all inspections described in Sections 3.1 through 3.2 shall be documented on an Inspection Report, Attachment l 1, in accordance with Reference 1-8.

3.5 MAPPING For each IR generated in accordance with Section 3.4, a sketch shall be attached to indicate the location and size of the applicable coated concrete area (See Note 1). . The individual sketches from each IR shall be used to prepare composite maps which shall cover in scope a specific room, compartment, quadrant, or cavity within the Reactor Containment Buildings.

The IR number shall be transferred to the applicable area on the composite map in order to provide traceability to the IR.

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INSTRUCTION SUE REVISION ,,DATE PAGE NUMBER TEXAS UTILITIES GENERATING CO.

. ' cesES ,'

j QI-QP-11.4-24 1 lptg 10 M 4 of 6 f

The composite macs shall be mat rtained by the QC Supervisor, or his designee, until all >su-faces applicable to this t instruction within a given area have been reinspected and

! -mapped. Each completea composite' map shall be transmitted to the Permanent Plant Pecords Vault.

NOTE 1: The following parameters (as necessary) should be considered for descriptions' of. test areas on the sketch. j i, I 7  ;

a. Bottom and Top -! Elevations (verticil and

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diagon'al surfaces) . or Elevation of Surface

, (horizontal surfaces).

b. _ Dimensions in relation to Azimuths, column lines, ~ reactor centerline 'or other components

, , of known location. .

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I c. Whether concrete substrate is fall, ceiling, '  ;

( , floor, beam _or column.

d. Quadrant, compartment - cavity _ or room in i

which inspection area is located. .

e. Unit number. '
f. Relation of surface to CartMh'al Directions (i.e. North, South, etc.)'. , ,

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INSTRUCTION REVISION issue GE

-; - TEXAS UTILITIES GENERATING CO.

NUMBER DAT-E h CPSES , ,

QI-QP-ll.4-24 I 5 of 6

]. FEB 10 '9S. j 4

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ATTACHMENT 1 s

couAncwc PE4x STEAM ELECTRIC S TATICN y g INSPECTION MEPORT p ,

4 tea 8 oESCJtisfion diEJ.TWIGai.64 4 i& T sT0e / sTRwCTbML .T3.sasAT.On PROTECT!vE COATING ,) .

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QI.QP.ll.4 24. Rev. , ,

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0C INSPECT 1CN ATTRIBUTES -

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l CSURFACER ONLY OFINtsx cnAT i l l t

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1. 1 Perfo m Tooke test Der Part. 3.1 to detemine thickness i i i l n

. I in mils of fintsn coat. (Occument one set of readings l t j l I for each 100 souare feet or less.) i l j l l RECORD: l

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. i l I i 2 l 3 4 l 5 1 I i i l '81 n . OF" l l l l l l l l

, l Max. CFT I l l

l. l l l l l Avg. OFT l l l l 4 l l I i i l' l l Circle individual unacceotable readings.

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,l- 2. l Per*om Adhesion Test per Para. 3.2. (Doc' ment three l tl l l

l readings for each 300 so. ft. or less. Doctanent ore I !( I  ;

l' l addittonal reading for each IQC so. f t. or fraction l l l l I tnereof in excess of 300 so. rt.4  ; 3g l l l .I CCLLY *1: I I i i  !

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INSTRUCTION ISSUE A

TEXAS UTILITIES GENERATING CC.

CPSES

..I QI-0P-ll.4-24 1 FEB : , ce- 6 of 6 l

lL ATTACHMENT 2 i

L' TOTAL NLHBER OF Alt.0WABLE POINTS OF OISCONTINUITY SURFACE AREA COND. "C" SEING C0ATED COMMERCIALLY

.( (50. FT. ) CONTINUOUS

. 10 5 10-50 , 10  ;

. 50-100 20

  • 100-500 30
500-1000- 50 1000-5000 75 i

Gross Of scontinuities - None Allowed.

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