ML20195B530

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Rev 2 to Spec A-1003(Q), Surface Preparation & Application of Field Coatings
ML20195B530
Person / Time
Site: Callaway Ameren icon.png
Issue date: 01/14/1992
From:
UNION ELECTRIC CO.
To:
Shared Package
ML20195B524 List:
References
A-1003(Q), NUDOCS 9811160160
Download: ML20195B530 (20)
v • d • e


Text

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ATTACHMENT 4 R$0.0(2 08 SPECIFICATION NO. A.1003(Q)

FOR SURFACE PREPARATION AND APPLICATION OF FIELD COATINGS 1

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l2 l01/13/92 l Issued for Use l pf l

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+...........................................................'D lNO [ DATE l

REVISIONS l

BY l CK l APP'D l

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1 l UNION ELECYO C COMPANY l TECHNICAL SPECIFICATION FOR l

-l ST. Loos, x0 l

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l SURFACE PREPARATION AND l

l DESIGN CONTROL l

APPLICATION OF FIELD COATINGS l

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CALLAWAY PIANT UNIT I l SPECIFICATION NUMBER A.1003(Q) l REV.

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Sheet No i l 2 l

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9811160160 981109 PDR ADOCK 05000483 J

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IATEST-LATEST IATEST SHEET REV.

APPENDICES

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ATTACHMENTS REV.

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I l UNION ELECTRIC COMPANY l REVISION STATUS SHEET FOR l

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l SURFACE PREPARATION AND l

l DESICN CONTROL l

APPLICATION OF FIELD COATINGS l

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CALIAWAY PLANT UNIT I l SPECIFICATION NUMBER A.1003(Q) l REV.

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SPECIFICATION NO. A 1003(Q)

SHEET NO. iii t-TABLE OF CONU.NIS Section Title Page No.

1.0

. Purpose and Scope 1

2.0 Related Work not Included 1

3.0 Definitions 1

4.0 Codes and Standards 2

5.0 Quality Assurance 3

6.0 Equipment 5

7.0 Materials 6

8.0 Material Handling and Storage 6

9.0 Surface Preparation 8

'10.0 Coating Application 11 11.0 Inspection 14 12.0

' Remedial Work (Applicable only to Previously 15 Coated Surfaces) 13.0 surfacer 16 i

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l SPECIFICATION NO. A-1003(Q)

PAGE 1 of 17 j

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SURFACE PREPARATION AND i

APPLICATION OF FIELD COATINGS l 1.0 PURPOSE AND SCOPE I

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This specification describes the Technical requirements l

l 1.1 l

of Safety Related Coatings and their application for.

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use at Callaway Plant.

1.2 WORK INCLUDED 1.2.1 The work includes but is not limited to the following work:

a.

Surface preparation b.

Applying coating materials c.

Inspecting coated work d.

Touching up shop-coated surfaces e.

Application of wall surfacers f.

Sand blast of unprimod structural or miscellaneous steel r,. Furnishing all labor, supervision, tools, equip-ment, and supplies necessary to perform the work i

l h.

Protection of surrounding areas against overspray or spillaga 2.0 RELATED WORK NOT INCLUDED 2.1 The following items of related work are not included:

i a.

Caulking and sealants j

b.

Shop priming and shop finishing c.

Fireproofing d.

Carbon steel wall and floor sleeves smaller than 12 l

inches 3.0 DEFINITIONS t

3.1 The following terms ussd her-in are defined as follows:

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SPECIPICATION NO. A-1003(Q)

PAGE 2 of 17 l

a.

Coatin6 shall mean a fluid which when applied to a

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surface, forms a solid continuous film or barrier l

by some physical or chemical means whether used as j

l a prime, intermediate, or final coat.

b.

" Outdoor" shall mean surface areas exposed to the weather.

1 c.

" Indoor" shall mean surface areas under shelter within an enclosed structure, d.

" Exterior" shall mean the external surfaces of ap-paratus, equipment, vessels, or pipe.

" Interior" shall mean the internal surfaces of ap-e.

paratus, equipment, vessels, or pipe, f.

" Coating system" shall mean one or several coating materials to be applied on a prepared surface in specific sequence (prime, intermediate, and final) with a required dry-mil thickness for each coat.

l g.

" Concrete surfacer" shall mean a substrate filler l

and seal system applied as specified, and prior to l

the finish coating system.

i l 4.0 CODES AND STANDARDS I

l 4.1 The following standards and codes are incorporated as a l

part of the Specification as by reference.

I l 4.1.1 Steel Structures Painting Council (SSPC):

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SSPC-pal Shop, Field, and Maintenance Painting l

SSPC-PA2 Measurement of Dry Paint Thickness with l

Magnetic Cages l

SSPC-SP1 Solvent Cleaning j

SSPC-SP2 Hand Tool Cleaning l

SSPC-SP3 Power Tool Cleaning j

SSPC-SP10 Near-White Blast Cleaning i

SSPC-SP6 Commercial Blast Cleaning 4.1.2 American National Standards Institute (ANS1):

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N101.2-72 Protective Coatings (Paints) for Light Wa-ter Nuclear Reactor Containment Facilities N101.4-73* Quality Assurance for Protective Coatings

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Applied to Nuclear Pacilities 1

l N45.2-77 Quality Assurance Prog.am Requirements for -

l Nuclear Power Plants Rev. 2 l

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SPECIFICATION No. A-1003(Q)

PAGE 3 of 17 N45.2.2-72 Packaging, Shipping, Receiving. Storage, and Handling of Items for Nuclear Power Pi ets N45.2.3-73 Ecusekeeping During the Construction Phase of Nuclear Power Plants l

N45.2.6-73 Qualification of Inspection, Examination.

l and Testing Personnel for the Construction l

Phase of Nuclear Power Plants I

l N45.2.9-74* Collection, Storage, and Maintenance of Nu-l clear Power Plant Records

Part 1910., as applicable.

l 5.0 OUALITY ASSURANCE I

l The material and work required by the Specification for l

coatings in the Containment building shall conform to

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the Quality Control requirements herein.

l l 5.1 The program shall consist of planned and systematic ac-

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tions necessary to provid.e specified documentation and l

adequate confidence that special field coating and sur-

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facar work for nuclear facilities will perform satis-l factorily in service. The program shall be consistent l

with the requirements of ANSI N 45.2 and NRC Regulatory l

Cuide 1.54 which references ANSI N 101.4 which in turn l

references ANSI N101.2.

I l 5.2 Certification shall be as follows:

l l 5.2.1 For all work completed, a certificate of conformance l

shall be provided.

I l 5.2.2 For all Safety Related Coatings provided, a certificate l

of Conformance shall be provided, stating that all l

items are in accordance with requirements set forth in

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the purchase order. The certification should identify

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the associated material or equipment, and shall refer-l ence the purchase order number to which it applies.

l Buyor authorized deviations from purchase order requir-l esents shall be identified. The certification should be l

attested to by a person responsible for this quality l

assurance function.

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SPECIFICATION NO. A 1003(Q)

PAGE 4 of 17 i

[ 5.2.3 Iri addition to the certificate of conformance, a car-l tified copy of laboratory test and inspection shall be l

provided for each batch or lot of coating.

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l 5.3 No deviations are authorized. Alterations or modifica-l tions of the requirements of this purchase order can be j

made only by a written change to this purchase order l

issued by the purchasing agent of Union Electric Com-l pany.

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] 5.4 Title 10 Code of Federal Regulations, Part 21 applies j

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to the work or material covered by this purchase order.

l Union Electric shall be notified concurrently, or imme-1 l

diately after, when a Part 21 report is submitted to l

the Nuclear Regulatory Commission. This notification l

shall include all information required by the Part 21 l

report. The supplier is responsible for determining the l

applicability of Part 21 to all of the " Basic Compo-l nente" (as defined in 10CFR21) procured in association j

with this order and shall include, as appropriate, in l

their procurement documents for these items / services a l

10CFR21 applicability statement, as required by federal l

regulation.

l l 5.5 The supplier shall identify and document all deviations l

from the requirements of the purchase or contract docu-l ments on either form SDR - Supplier Deviation Request

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(attached) or the Supplier's own form if in the judg-l ment of the buyer, it presents equivalent information.

l The reco:mtended disposition, based on appropriate anal-l ysis, shall be described on the form. Deviation request

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shall be submitted to t.he buyer. Submittals from low-l er-tier suppliers shall be through the supplier to the l

buyer.

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] 5.5.1 Instructions for completing the SDR form are included j

on the back side of the SDR form itself.

l l 5.5.2 Any deviations is considered unacceptable until app-l roved in writing by the Buyer. Deviations shall be sub-l mitted and resolved prior to shipment unless otherwise l

authorized by Buyer.

l l 5.5.3 SDR's must be supported by technically valid informa-l tion that is sufficient for buyer evaluation. When ne-l cessary, the supplier shall attach supporting technical l

documents (of reproducible quality) to the SDR. A com-l plete set of attachments shall accompany all SDR sub-l mittals to the Buyer.

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.e SPECIFICATION NO A-1003(Q)

PACE 5 of 17 l

l l 5.5.4 A copy of the dispositioned SDR and attachments shall l

be included by the supplier in the Quality Verification l

Data Package for the Item (s) to which it applies. The l

SDR is considered complete when all entries are made, l

including the appropriate verification signatures by l

the Supplier and the Buyer's inspector or representa-l tive.

l l 5.5.5 The acceptance or rejection of the supplier deviation

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request is the Buyer's prerogative, to be exercised at l

the discretion of the Buyer's engineer. Acceptance of l

the Supplier Deviation Request shall require the signed l

authorization of the Buyer's engineer. Any deviation is l

considered unacceptable until approved in writing by l

the buyer. Acceptance of the supplier deviation request l

by the buyer does not relieve the supplier from respon-l sibility for the accuracy, adequacy, or suitability of l

the item or service being provided as defined in the l

procurement documents.

i l 5.6 All designing, procuring, manufacturing, processing, l

assembling, testing, examination, and inspection opera-l tion performed by the Supplier and these activities I

performed by his lower-tier suppliers of safety-related l

items or services are subject to survaillance by the l

buyer or the buyer's authorized representative. This l

surveillance shall in no way relieve the supplier of l

any contractual responsibilities nor shall it limit, in l

any way, any other rights of the buyer under the pur-l chase order or contract. The surveillance of a lower j

tier supplier would be coordinated with and/or assisted j

by the supplier. The term surveillance, as used herein, l

includes inspection, survey, and audit activities. The l

buyer may provide the resultant audit reports to util-l ities and other parties, such as, but not limited to l

the Nuclear Procurement Issues Committee, (NUPIC).

5.7 Application and inspection personnel shall meet the re-quirements of paragraph 5.3 and 6.3 of ANSI N101.4.

5.8Property "ANSI code" (as page type) with input value "ANSI N101.4.</br></br>5.8" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process. Union Electric shall have free access to all work and shall have the authority to reject work if the require-ments of this Specification, including.those for docu-mentation, have not been fulfilled.

l 6.0 EOUIPMENT l

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l 6.1

. Vacuum or open blast cleaning equipment shall be pro-l l

vided to clean, give the profile depth, and prepare the l

surfaces as specified for the coating system specified l

by Union Electric.

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l SPECIFICATION NO. A-1003(Q)

PAGE 6 of 17 6.2 Hand and power cleaning tools shall be capable of prod.

ucing the level of cleanliness specified with no dispo-sition of foreign materials or damage to the general surface contour and in accordance with SSPC, SP2, and SP3.

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6.3 Air supply lines for coating, cleaning, or blasting shall be equipped with oil and moisture separators.

Separator filters shall be sized to ensure constant

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l removal of oil and moisture while equipment is in use and shall be kept clean and maintained at all times.

7.0 MATERIALS

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7.1

' Coating shall be mixed at the factory except that any coating in paste, powder, or field-activated form may be mixed at the jobsite in accordance with the manufac-turer's published instructions.

l 7.2 Only those products specified by Union Electric shall l

be used, unless alternative products are approved for l

l use in writing by Engineering.

8.0 MATERIAL HANDLING AND STORAGS 8.1 Packaging, shipping, storing, and handling of materials shall be in accordance with manufacturer's recommenda-tions or Paragraph 8.6, as appropriate.

[ 8.2

- ' Delivery of coating materials to the site shall be in l

original, unbroken, sealed containers, each bearing the j

manufacturer's name, brand, and batch number. If the j

batch number or other factory marking does not incorpo-l rate the date of manufacture, the date shall appear l

l separately on the label or container. Containers for l

pigmented coatings shall be no larger than 6 gallons l

unless otherwise approved by Engineering. Each shipping

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container will bear the P.O. number and line number.

I l 8.2.1 All naterials covered by this purchase order must be l

processed through the Union Electric-Callaway Plant's l

stores and received by the Union Electric-Callaway l

Plant's Q.C.

l 8.3 Coating materials shall be received and stored in the i

original containers. Materials shall be stored in areas, protected from weather or, in Paragraph 8.6.1.5 as appropriate. Materials older than the manufacturer's recommended shelf life shall not be used and shall be removed from the site. Any extension of shelf life shall receive Engineering's prior approval.

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.o-SPECIFICATION NO. A-1003(Q)

PACE 7 of 17 8.4 Containers of multi-component coatings shall not be opened unless for immediate use. Unused portion of re-sealed containers of solvents, thinners, and unmixed coating materials may be permitted back in storage if not contaminated.

8.5 Coatings shall' be mixed in containers that do not react adversely with the coating materials. Mechanical mixers capable of blending the pigment and vehicle thoroughly shall be used.

8.6 Q-listed material procedures shall conform to itemized portions of ANSI 45.2.2 as noted herein.

8.6.1 The applicable paragraphs of the standard are as fol-lows:

8.6.1.1 Paragraphs 2.1 through 2.6 as applicable Paragraph 2.7.4 Classification Level D.

8.6.1.2 Paragraph 3.2.4, Level D. sub-items:

(1) (See 3.3)

(3) (See 3.7.1(5))

(6) (See Appendix A3.9) 8.6.1.3 Paragraph 5.2 as applicable Paragraph 5.3 through 5.7.

8.6.1.4 Paragraph 6.1.2, Level B, Paragraph 6.2.1, 6.2.2 and 6.2.3, Paragraph 6.3.1 through 6.3.4, Paragraph 6.4 as applicable, Paragraphs 6.5 and 6.6.

8.6.1.5 Paragraph 8.0 8.6.1.6 Balance of standard is non-applicable.

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SPECIFZCATION NO. A-1003(Q)

PAGE 8 of 17 l 9.0 SURFACE PREPARATION I

l 9.1 GENERAL i

j 9.1.1 lb 'vare, hardware accessories, electrical cover l

pls s, lighting fixtures, diffusers, and similar items I

in contact with the surfaces to be coated shall be pro-l tected or temoved before surface preparation and coat-l ing operations. If removed, removal and reinstallation l

shall be performed by workmen skilled in the trade in-

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volved. Built in equipment or hardware that cannot be l

removed shall be masked or adequately protected from l

damage or defacing during the surface preparation and I

coating operations. Masking tape used on stainless l

steel shall be low chloride tape, with total halogen l

content not exceeding 0.1 percent by weight. Wipe steel l

with isopropyl alcohol after removal of tape.

9.1.2 The following shall not be coated and shall be masked and taped or otherwise protected from defacing during surface preparation and coating:

a.

Name and model number plates UL labels, manufac-turer's instructions labels, and gauges b.

Rubber, neoprene, integrally colored plastic, sili-cone sealed joints and vinyl surfaces c.

Nonferrous metals

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d.

Stainless steel, unless approved in writing by En-l gineering l

l e.

Handwheel thread, valve stems, erosion / corrosion l

marks, and sliding surfaces f.

Expansion joints, flexible surfaces, and friction joints g.

Glazing

[ 9.1.3 The exterior faces of machined surfaces, nuts, bolt l

heads and bolt threads shall be painted AFTER fit up is l

complete. Bolt threads may be lubricated in lieu of l

painting on bolts that require frequent removal.

9.1.4 Surfaces to be coated shall be cleaned free of oil, grease, and other contaminants before application of coating. Solvent cleaning, SP-1, shall be used on steel j

surfaces, prior to mechanical cleaning, using solvent recommended by Engineering.

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SPECIFICATION NO. A-1003(Q)

PAGE 9 of 17 9.1.5 Cleaning and coating operations shall be scheduled with the work of others so that dust and other foreign mate-rials from construction or cleaning processes will not fall on wet, newly coated surfaces. Drop cloths shall be provided at all locations, and all necessary meas-ures shall be taken to prevent coating materials from falling or marring any surface not to be coated.

9.1.6 Washing solutions, acids, neutralizers, and other for-eign matter shall not be allowed to enter into the plant drainage system without prior approval from Rad-waste.

9.2

. CONCRETE. MASONRY. AND CEMENT PIASTER SURFACES 9.2.1 Glazed, slick, and scaled areas shall be thoroughly cleaned of loose material and roughened as required by manufacturer for good coating adhesion. Voids, rock pockets, or cracks shall be tooled and filled flush with filler conforming to the coating manufacturer's reco:nmendations as outlined in Paragraph 10.1.11. Any damage to the substrate done during mechanical cleaning shall be repaired to achieve a uniform appearance.

J 9.2.2

...Laitance shall be removed by etching with a 20 percent, l

commercial grade, phosphoric acid solution using a l

stiff bristle brush, then rinsing thoroughly with fresh l

water to remove all traces of the acid. The rinsed sur-l faces shall be tested with pH hydrien test paper (Micro l

Essential Lab, Brooklyn, N.Y., MFC. No 53) to assure j

that the surface is neutral to slightly alkaline (pH l

7.0 to 9.0).

4 9.2.3 With the approval of Enginsaring,'la1 Ence may be re-noved by mechanical or +brasive blasting methods. Any damage to the substrate done during mechanical cleaning shall be repaired to achieve a uniform appearance. The spot solvent and mechanical or abrasive blast cleaning of oil, grease, and other contaminants is permitted when recommended in writing by the mar.afacturer.

l 9.2.4 The application of materials containing chlorides to l

concrete surfaces shall be prohibited. The use of hy-l drochloric acid in any form on concrete surfaces shall l

be prohibited.

9.2.5 Where washing is required, installed equipment shall be protected from wetness and damage.

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SPECIFICATION NO. A-1003(Q)

PACE 10 of 17 9.2.6 Where form sealers, bond breakers, hardeners, curing compounds, or other foreign materials have been applied j

to the concrete and are of a material incompatible with the paint to be applied on the concrete surface, the affected areas shall be made suitable for painting.

9. 2. 7.

If nachanical methods are used, solvent cleaning may be performed after surface preparation of concrete, prior to coatin5-9.3 FERROUS METAL 9,3.1 Previously applied coatings shall be clean, sound, and dry, or be made so, if required, immediately before the application of any subsequent coats specified herein.

9.3.2 All surfaces of structures, equipment, and piping shown to be coated, either bare or improperly primed, shall be prepared to acceptable standards.

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9.3.3 Unprimed surfaces installed shall be prepared in accor-dance with SSPC-SP3, Power Tool Cleaning.

l 9.3.4 All visible burrs, slivers, scabs, end weld splatter I

shall be removed.

9.3.5 Surface preparation operations shall be performed under the following conditions:

a.

There shall be no visible moisture on the steel.

b.

Abrasive shall be oil-free. Oil and water separa-tors shall be used in compressed air lines to re-move oil and moisture from the air before it is used. Separators shall be placed as close as prac-ties.1 to the blast equipment.

The surface temperature is between 30*F and 115'F, c.

2'F above the dew point and improving.

9.3.6~

If rust become.s visible or if dirt becomes embedded in the steel surfaces, the steel shall be re-cleaned to achieve the degree of cleanliness and anchor profile as specified.

9.3.7 After blasting and immediately prior to coating, com-pressed air free of oil / moisture, or vacuum cleaning, shall be used to remove dust or remaining residue from the steel surface.

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9.3.8 After grinding and immediately prior to coating, the surface shall be wiped clean with an approved cleaner.

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4 SPECIFICATION NO. A-1003(Q)

PACE 11 of 17 9.4 STEEL SHOP PRIMED WITH INORGANIC ZINC PRIMER 9.4.1 Before finish coating, surfaces primed with inorganic zine shall be examined for nonadherent zine and zine salts, whether or not the primer has been fully cured, and examined for damaged and unprimed areas. Loose or nonadherent zine salts shall be removed by light hand sanding with aluminum screen wire, and shall be va-cuumed or blown down with compressed air, or by brush-ing to remove dust residue. The primer shall be checked for hardness and any tendency to powder whea scraped with a coin. If inorganie zine primer is soft or un-cured, the primer may be force water / steam cured in ac-cordance with primer manufacturer's rccommendations. If the primer remains soft after force curing, it shall not be finish coated and shall be reported to Engineer-ing for resolution.

[ 9.5 STEEL SHOP FRIMED WITH OTHER THAN INORGANIC ZINC PRIMER 1

l 9.5.1 Before topcoating, primed surfaces shall be examined l

for damage and for unprimed areas. Such affected areas l

shall be cleaned as specified in SSPC-SP2 and SSPC-SP3 l

respectively, and shall be touched up by using the pri.

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mer specified by Engineering.

9.6 EMBEDS / SURFACE MOUNTED PLATES 9.6.1 Where overlapping on embeds or a smooth transition be-tween surface-mounted plates and concrete is required, such steel surfaces shall be prepared to a cleanliness level specified by SSPC-SP 3. Use of chemicals for cleaning is not permitted.

10.0 COATING APPLICATION 10.1 General requirements shall be as specified in SSPC-PA-1 as follows:

10.1.1 Coatings shall be thoroughly mixed and shall be kept at a uniform consistency during application. Coatings shall be thinned and strained only in accordance with the manufacturer's published instructions. Coatings of different manufacturers shall not be intermixed.

10.1.2 Coatings shall be applied as soon as practicable after completion of surface preparation. Coatings may be app-lied to steel surfaces regardless of elapsed time since surface preparation--provided there is not visible rust bloem. Each coat shall be applied to the specified film thickness and shall be applied within the time limits specified by the manufacturer.

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.9 SPECIFICATION NO A-1003(Q)

PAGE 12 of 17 i

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10.1.3 Coating work shall include coating application to all exposed surfaces of every member unless otherwise spec-ified herein. Surfaces which require coatings and are inaccessible shall be coated flush to the installed l

item. Coating application shall be allowed to terminate a maximum of one-half inch from the obstruction when conditions of Paragraph 9.10.1 are applicable.

10.1.4 Metal or other surfaces to be coated with coatings oth-er than water-based type, and that are adjacent to sur-faces receiving water based coatings, shall be protect-ed or primed prior to the application of water base coatings.

l 10.1.5 The final coat shall be applied when all other work l

within the affected surroundings has been substantially l

completed unless otherwise approved by Engineering.

10.1.6 Coatings shall be applied under the following condi-tions:

i a.

Surface is free of moisture.

b.

Temperature of steel surfaces shall be between 50*F l

and 120*F for epoxes and urethanes, 40*F to 90*F for conventional paints, and between 40'F and 120*F i

for inorganic zinc. Temperature of concrete surfa-ces shall be between 50*F and 90'F for all coat-l ings.

Surface temperature is at least 5'F above the dew c.

point, and improving, d.

Relative humidity is less than 85 percent.

e.

The type and amount of thinner to be used for thinning coatings for application at temperatureo above 100*F shall be in accordance with manufactur-er's recommendations.

f.

Work area is free from inordinate amounts of dust that would contaminate prepared surfaces or damage freshly applied coat.ings, g.

Freshly painted areas are ventilated for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> when sprayed.

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10.1.7 Mixed coating materials shall be applied within the pot life recommended by the manufacturer. Mixed, unapplied

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coatings shall be discarded at pot life expiration.

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1 SPECIFICATION NO. A-1003(Q)

PAGE 13 of 17 l 10.1.8 The applicator chall verify the wet film thickness of l

coatings with an industry-approved depth measuring l

gauge.

I l 10.1.8.1 Dry film thickness specified for non-ferrous surfaces j

to be coated, shall be determined by use of a wet film l

thickness gauge using the following formula:

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Dry Film Thickness - Wet Film Thickness X Percent Solids by Volume I

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The percent solids by volume shall be obtained from the l

manufacturers data sheets.

10.1.8.2 Dry film thickness of ferrous surfaces shall be meas-ured with an Elcometer, Mikrotest, or other approved

gauge, 10.1.9 Defective areas shall be repaired and recoated in ac-cordance with the Civil / Structural Manual. Coating de-facts such as the following shall be corrected co pro-2 vido uniform texture, thickness, and sheen of the fin-
ish, Loss of adhesien, such as blistering and peeling a.

b.

Kuderacking c.

Dry overspray d.

Runs and sags e.

Embedded particles f.

Rusting g.

Fading or chalking which exceeds the limits estab-lished by manufacturer's standard.

l 10.1.10 Coatings applied to non-ferrous surfaces such as con-l crete, masonry, etc., shall be applied at the coverage l

rate specified by Engineering, and as detailed in Para-l graph 10.1.9.1.

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SPECIFICATION NO. A-1003(Q)

PAGE 14 of 17 Defective areas to concrete surfaces shall be re-a.

paired, up to 1 1/2 inches deep, using surfacer ma-nufacturer recommended patching materials. Areas larger than 1 1/2 inches in depth shall be repaired with dry-pack grout, per the Civil / Structural Manu-al.

b.

A minimum of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or more, as recommended by manufacturer, shall be allowed for coating dry pack repaired areas cured with epoxy liquid membrane curing compound. Surface preparation shall be in accordance with the coating manufacturer's recom-mendations.

c.

Repair procedure shall be in accordance with the Civil / Structural Manual.

l 11.0 INSPECTION OF COATING APPLICATION INSIDE CONTAINMENT I

l 11.1 The Epplicator shall advise Quality Control of work l

progress on a basis acceptable to each party in accor-l dance with the OQCM. All work and materials shall be l

examined during the progress of the work and following l

its completion. Each separate operation shall be app-l roved by UE QC before initiating subsequent operations.

I l 11.2 Dry film thickness deviations shall be not more than 10 l

percent below or above the specified values on 20 pe.r-l cent of the random thickness measurements made in ac-l cordance with methods described in SSPC-PA-2. Dry film j

chickness shall be measured, j

11.2.1 Each coat shall be examined for specified applicacion defects and evidence of embedded dust, cracking, blis-tering, peeling, and delamination. The total dry film thickness resulting from sags and runs shall not exceed 150 percent of the specified maximum nor be less than the specified minimum with no evidence of crazing, cracking, peeling or delamination. Inorganic zine pri-mer overlay coverage at edges and corners, to a maximum of 7.5 mils is allowed under the following conditions:

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a.

Coating shall be moisture cured.

b.

Mud cracking does not exist.

11.2.2 Each coat shall be examined before recoating to verify that the surface is clean, dry, and free from contami-nants.

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SPECIFICATION NO. A-1003(Q)

PACE 15 of 17 11.2.3 Repairs to areas requiring additional coating shall be acceptable to QC and within the product limits defined by dbe coating manufacturer.

11.2.4 Union Electric shall maintain the necessary instruments to inspect the surface preparation, coating applica-tions, and fully cured coating at the place of work.

Instruments shall include but not be limited to the following:

a.

Thermometer b.

Surface thermometer c.

Hygrometer or sling psychrometer d.

Dry film thickness gauge such as Mikrotest or El-cometer with range from 0 to 40 mils e.

Surface profile comparator such as Keane Tator Pro-file Comparator Disc f.

Tooke gauge g.

Vet-film thickness gauge such as Nordsen with range from 0 to 40 mils 11.3 Defects disclosed by inspection shall be rechecked af-ter correction.

11.4 All inspection shall be performed by personnel qual-ified in accordance with the requirements set forth in ANSI N45.2.6.

11Property "ANSI code" (as page type) with input value "ANSI N45.2.6.</br></br>11" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process..5 All inspections of qualified coatings shall conform to paragraph 6.2 of ANSI N101.4.

12.0Property "ANSI code" (as page type) with input value "ANSI N101.4.</br></br>12.0" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process. REMEDIAL WORK (APPLICABLE ONLY TO PREVIOUSLY COATED SURFACES) 12.1 Any coated area finished which is damaged due to activ-itier normally associated with normal. operation shall be touched up using the proper system specified herein.

12.2 Touch-up and repair shall be performed in accordance with manufacturer's written recommendations, this spec-ification, and approved touch-up and repair procedure submitted.

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SPECIFICATION NO. A-1003(Q)

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PAGE 16 of 17

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12.3 oil, grease, and other contaminants shall be removed from steel surfaces prior to blasting or power tool cleaning by solvent cleaning, in accordance with SSPC-SPl.

12.4 Ferrous surfaces which exhibit burned, rusted, or dam-aged coating requiring touch-up and repair shall be prepared in accordance with SSPC-SP 3. Areas shall be prepared by power grinding with a " Clean 'N Strip" ab-l rasive wheel or Roto Peen, as manufactured by 3M Com-l pany.

l 12.5 Repaired areas shall be re-coated as specified herein, l

l and shall not overlap surrounding sound primed steel or l

galvanized surfaces by more than 2 inches.

12.6 Adjacent sound coating shall be tapered to a feather i

edge, up to approximately two inches, using suitable methods or tools, and prepared surfaces coated before rusting or recontamination occurs.

1 12.7 Prepared surfaces that have become rusted, wet, or oth-erwise contaminated prior to coating shall be reeleaned to specification.

l 12.8 Touch-up of structural steel connections (nuts, bolts, j

bolt patterns, and clip angles) and field-trimmed sur-l face-mounted plate edges shall be subject to documenta-l-

tion of materials and thickness used, area (in square j

feet) involved, and location, in accordance with the l

following criteria:

l 12.8.1 Whenever space (accessibility) permits, surface prepa-ration shall be a minimum of SP-3. Areas which are in-l accessible to surface power tool cleaning may be cleaned to SP-2, then coated. Areas of disputed acces-sibility shall be referred to Engineering for resolu-tion.

[ 13.0 SURFACER I

l 13.1 Areas to receive surfacer shall have the surfacer app-1 l

lied in accordance with manufacturer's instructions to l

l achieve a 906 to 95% pinhole free surface. All referen-l ces to coatings which define surface preparation and l

application requirements apply to surfacers. Interior l

corners shall be covered at approximately 1/4 inches j

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radius.

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SPECIFICATION NO. A-1003(Q)

PAGE 17'of 17 13.2 Where required, the surfacer system shall be overlapped by 1/2-inch on the embeds and applied up to 1/4-inch in radius to achieve a smooth transition between sur-face-mounted plates and concrete.

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