Amendment_0002_0002.pdf

(x)

140R6021R0005 x x copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted ; or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT TO BE

RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR

OFFER. If by virtue of this amendment you desire to change an offer already submitted , such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

x

R60

07/29/20210002

13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS. IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

12. ACCOUNTING AND APPROPRIATION DATA (If required) is not extended.is extended, Items 8 and 15, and returning

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended , by one of the following methods: (a) By completing

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

FACILITY CODE CODE

10B. DATED (SEE ITEM 13)

10A. MODIFICATION OF CONTRACT/ORDER NO.

9B. DATED (SEE ITEM 11)

9A. AMENDMENT OF SOLICITATION NO.

CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)

7. ADMINISTERED BY (If other than Item 6)CODE 6. ISSUED BY

Bureau of Reclamation Missouri Basin Region Regional Office PO Box 36900 Billings

MT 59107

PAGE OF PAGES

4. REQUISITION/PURCHASE REQ. NO.3. EFFECTIVE DATE2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO. (If applicable)

1. CONTRACT ID CODE

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

06/21/2021

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority) appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

E. IMPORTANT: Contractor is not is required to sign this document and return __________________ copies to the issuing office.

ORDER NO. IN ITEM 10A.

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)15A. NAME AND TITLE OF SIGNER (Type or print)

15C. DATE SIGNED 16B. UNITED STATES OF AMERICA 15B. CONTRACTOR/OFFEROR 16C. DATE SIGNED

(Signature of person authorized to sign) (Signature of Contracting Officer)

Gerri Voto-Braun

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

Previous edition unusable

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

GREEN MOUNTAIN POWERPLANT PENSTOCK REHABILITATION

Colorado-Big Thompson Project, Colorado

See Attached for changes incorporated by this amendment.

Except as provided herein, all terms and conditions of the document referenced in Item 9 A or 10A, as heretofore changed, remains unchanged and in full force and effect .

Solicitation No. 140R6021R0005 Amendment No. 0002

Description of Changes: The following changes are hereby incorporated into and made a part of this solicitation:

1) In section C remove Section 09 96 20-Coatings in its entirety and substitute therefore the attached revised section 09 96 20-Coatings.

2) In section C remove Section 09 97 02-Impacted Immersion Coatings it; entirety and substitute therefore the attached revised section 09 97 02-Impacted Immersion Coatings.

For convenience, essential changes on the revised solicitation pages are indicated by a vertical line in the margin where lines or paragraphs changed from the previous version. However, all portions of the revised solicitation pages shall apply whether changes thereon have or have not been indicated.

Receipt of Bids: The hour and date for receipt of offers is corrected to 1400 (2:00 PM Local Time) on August 12, 2021.

Acknowledgement: See Block 11 above regarding how to acknowledge this amendment. The Government must receive the acknowledgement at the place designated for receipt of bids (See Block 10 of the Standard Form 1442).

Third Party: If you have given a copy of the solicitation to someone else, please forward this amendment accordingly.

A list of questions from prospective contractors are also included with this amendment and are provided for informational purposes only. Additional questions will be addressed in a subsequent amendment. The final date for questions is August 4, 2021.

Green Mountain Powerplant Penstock Rehabilitation Colorado-Big Thompson Project, Colorado Amendment No. 0002

Coatings

Revise 09 96 20 - 1

SECTION 09 96 20

COATINGS

PART 1 GENERAL

1.01 MEASUREMENT AND PAYMENT

A. General:

1. Payment for various items to be recoated includes the following costs:

a. Containment, safety, and health activities for coatings work.

b. Coating removal, handling, and disposal, including abrasive disposal.

c. Surface preparation, such as abrasive blasting, cleaning, and grinding.

d. Coating application and remedial work.

B. Blast and Recoat Exterior Coated Surfaces of Unit 1 and Unit 2 Penstock and Associated Metalwork:

1. Measurement: Surface area blasted and recoated.

2. Payment: Unit price offered in the Price Schedule.

C. Blast and Recoat Exterior Surfaces of Unit 1 and Unit 2 Scroll Case and Draft Tube Man- Door:

1. Measurement: Surface area blasted and recoated.

2. Payment: Unit price offered in the Price Schedule.

D. Cost:

1. Include cost of weld repair during surface preparation in applicable square inch prices offered in the Price Schedule for Weld Repair during Surface Preparation of Penstock, Outlet Tube, Scroll Case, and Draft Tube for Unit 1 and Weld Repair during Surface Preparation of Penstock, Outlet Tube, Scroll Case, and Draft Tube for Unit 2.

a. Does not include runner repair. Refer to Section 48 13 10 – Vertical Francis Turbine Runner Repair.

2. Include cost of coating complete electrical system equipment and materials in lump sum price offered in the Price Schedule for Complete Electrical System.

3. Include cost of coating interior and exterior surfaces of new 3-inch diameter steel vent piping in linear foot price offered in the Price Schedule for Furnish and Install Lined and Coated 3-Inch Steel Penstock Vent Piping.

4. Include cost of coating exterior surfaces of new 14-inch diameter steel vent piping in applicable linear foot prices offered in the Price Schedule for Furnish and

Revise 09 96 20 - 2

Install Lined and Coated 14-Inch Steel Vent Piping for Unit 1 and Furnish and Install Lined and Coated 14-Inch Steel Vent Piping for Unit 2.

5. Include cost of coating air vent piping supports in applicable linear foot prices offered in the Price Schedule for Furnish and Install Lined and Coated 14-Inch Steel Vent Piping for Unit 1, Furnish and Install Lined and Coated 14-Inch Steel Vent Piping for Unit 2, and Furnish and Install Lined and Coated 3-Inch Steel Penstock Vent Piping.

6. Include cost of coating motor operator and appurtenant equipment for 40-inch jet-flow gate in applicable lump sum prices offered in the Price Schedule for Jet-Flow Gate for Unit 1 and Jet-Flow Gate for Unit 2.

7. Include cost of coating exterior surfaces of new 4-inch steel pipe, air valve assembly, and drain valves in lump sum price offered in the Price Schedule for Furnish Steel Pipe for Air Valve Assembly and Drain Valves.

1.02 REFERENCE STANDARDS

A. ASTM International (ASTM)

1. ASTM A380-17 Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems

2. ASTM A780-09(2015) Repair of Damaged and Uncoated Areas of Hot Dip Galvanized Coatings

3. ASTM C920-18 Elastomeric Joint Sealants

4. ASTM D2794-93(2019) Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact)

5. ASTM D4060-19 Abrasion Resistance of Organic Coatings by the Taber Abraser

6. ASTM D4285-83(2018) Indicating Oil or Water in Compressed Air

7. ASTM D4541-17 Pull-Off Strength of Coatings Using Portable Adhesion Testers

8. ASTM D5894-16 Cyclic Salt Fog/UV Exposure of painted Metal, (Alternating Exposures in a Fog/Dry Cabinet and a UV/Condensation Cabinet)

B. American Welding Society (AWS)

1. AWS D1.1/D1.1M:2015 Structural Welding Code

C. American Water Works Association (AWWA)

1. AWWA C206-17 Field Welding of Steel Water Pipe

D. International Organization For Standardization (ISO)

Revise 09 96 20 - 3

1. ISO 8502-3:2017 Assessment of dust on Steel Surface Prepared for Painting (Pressure-Sensitive Tape Method)

E. Association for Materials Protection and Performance (AMPP), formerly The Society for Protective Coatings (SSPC)/NACE International (NACE)

1. SSPC-AB1-19 Mineral and Slag Abrasives

2. SSPC-AB2-16 Cleanliness of Recycled Ferrous Metallic Abrasives

3. SSPC-AB3-17 Newly Manufactured or Re-Manufactured Steel Abrasives

4. SSPC-Guide 15-13 Field Methods for Retrieval and Analysis of Soluble Salts on Substrates and Other Nonporous Substrates

5. SSPC-PA1-16 Shop, Field, and Maintenance Painting of Steel

6. SSPC-PA2-18 Measurement of Dry Paint Thickness with Magnetic Gages

7. SSPC-QP1-19 Evaluating Painting Contractors (Field Application to Complex Industrial Structures)

8. SSPC-QP2-19 Evaluating Painting Contractors (Field Removal of Hazardous Coatings From Complex Industrial Structures)

9. SSPC-QP3-10 Evaluating the Qualification of Shop Painting Contractors

10. SSPC-SP1-16 Solvent Cleaning

11. SSPC-SP3-18 Power Tool Cleaning

12. SSPC-SP10/NACE 2-07 Near-White Blast Cleaning

13. SSPC-SP11-13 Power Tool Cleaning to Bare Metal

14. SSPC-SP16-10 Brush-off Blast Cleaning Non-Ferrous Metals

15. SSPC-VIS1-04 Guide and Reference Photographs for Steel Surfaces Prepared by Abrasive Blast Cleaning

16. SSPC-VIS3-04 Visual Standard for Power- and Hand-Tool Cleaned Steel

Revise 09 96 20 - 4

17. NACE SP 0287-16 Field Measurement of Surface Profile of Abrasive Blast Cleaned Steel Surfaces Using a Replica Tape

18. NACE SP 0188-06 Discontinuity (Holiday) Testing of New Protective Coatings on Conductive Substrates

1.03 SUBMITTALS

A. Submit the following in accordance with Section 01 33 00 - Submittals.

B. RSN 09 96 20-1, Approval Data:

1. For each coating material:

a. Manufacturer’s product data, application, and SDS sheets.

b. Supplier’s name, address, and phone number.

c. Identification of “Items to be coated” including sub-letter and sub-number listed in Coating Tabulations.

2. For each caulk and filler:

a. Manufacturer’s product data, application, and SDS sheets.

b. Supplier’s name, address, and phone number.

c. Identification of areas of use including sub-letter and sub-number listed in Coating Tabulations.

3. For each substituted coating material “equal” to specified product in Coating Tabulation:

a. List of not less than 3 successful material applications of similar size and complexity:

1) Project name, location, type of structure, and application dates.

2) Owner’s name, address, and telephone number.

b. Certification that material meets or exceeds specified requirements:

1) Manufacturer’s certification including technical representative’s signature and date of signature.

2) Independent laboratory’s certified test reports.

C. RSN 09 96 20-2, Final Approval Data:

1. For each coating material and thinner:

a. Purchase orders including order number, date, manufacturer’s designated product name, batch number(s) (excluding thinner), and quantity purchased.

Revise 09 96 20 - 5

D. RSN 09 96 20-3, Qualifications:

1. Coating Contractor:

a. Current SSPC-QP1 and SSPC-QP2 for field coating operations.

b. Current SSPC-QP3 certification for shop coating operations.

2. Coating Applicator:

a. Current Coating Application Specialist (CAS) or Plural Component Application Certification (PCAC).

b. Resume to include list of not less than 3 jobs of similar size and complexity, including owner’s name, address, and telephone number, for each coating type.

3. Coating Quality Control Manager:

a. Current Level 3 certification for NACE Certified Coatings Inspector (CIP) or SSPC Protective Coatings Inspector (PCI).

b. Resume to include a list of not less than 5 years of jobs of similar size and complexity to that required of this contract, including owner’s name, address, and telephone number, for each coating type.

4. Coating Inspector:

a. Current Level 1 minimum certification for NACE Certified Coatings Inspector (CIP) or SSPC Protective Coatings Inspector (PCI).

b. Resume to include a list of not less than 2 years of jobs similar size and complexity to that required of this contract, including owner’s name, address, and telephone number, for each coating type.

E. RSN 09 96 20-4, Quality Control Plan:

1. Quality Control Procedure:

a. Quality control plan.

b. Procedure for addressing identified non-conformities.

F. RSN 09 96 20-5, Contractor Quality Testing Report:

1. Comprehensive report of daily quality control test reports.

1.04 DELIVERY, STORAGE, HANDLING

A. Deliver materials to jobsite in original, undamaged, unopened containers labeled with manufacturer’s name, designated product name, batch number, date of manufacture, and any special instructions.

B. Deliver materials in containers not larger than 5 gallons as packaged by manufacturer unless suitable equipment is provided at jobsite to handle and thoroughly mix materials in larger containers.

Revise 09 96 20 - 6

C. Store coating materials and thinners in accordance with the manufacturer's recommendations, and as a minimum, store off the ground, under cover, and at 50 to 95 degrees F.

D. Do not use coating material which has exceeded manufacturer’s specified storage stability period (shelf life).

1.05 AMBIENT CONDITIONS

A. Maintain environmental conditions to meet coating manufacturer’s requirements during surface preparation, coating application, and curing period. Provide heating or cooling, and dehumidification as needed. Complete curing before placing the coating systems into service.

B. Coatings shall be applied when the substrate surface temperature is 5 degrees F or more above the dew point temperature and for at least 8 hours after application.

1.06 PROJECT CONDITIONS

A. Existing coatings may contain hazardous materials. Refer to Section 02 83 20 – Removal and Disposal of Coatings and Equipment with Coatings Containing Hazardous Materials.

1. The penstock exterior coating is believed to be cold-applied enamel, CA-50. The coating thickness is approximately 10 to 20 mils.

B. Existing packing materials associated with expansion joint and tube valve wall gland may contain hazardous materials. Refer to Section 02 82 20 – Removal and Disposal of Asbestos Containing Materials.

C. Water control required within penstock, penstock gallery, and draft tube. See Section 02 70 10 – Removal and Control of Water.

D. Powerplant contains equipment that is sensitive to dust and other airborne particulates or solvents, requiring ventilation of surface preparation and coating activities by means other than through the powerplant.

E. Steel substrates may contain pitting that requires welding prior to coating.

1. Excludes Section 48 13 10 – Vertical Francis Turbine Runner Repair.

F. Penstock and penstock tunnel environmental conditions vary with the seasons and whether the penstocks contain cool flowing water from the reservoir.

1. Typical penstock tunnel air temperature is approximately 40 to 55 degrees F.

2. Typical penstock water temperature is approximately 35 to 45 degrees F.

Revise 09 96 20 - 7

PART 2 PRODUCTS

2.01 EQUIPMENT

A. Surface Preparation and Spray Application Equipment:

1. Sized in accordance with coating manufacturer’s recommendations.

2. Provide:

a. Pressure gauges and pressure regulators.

b. Air supply lines free from oil and moisture.

2.02 ABRASIVES

A. Mineral and Slag Abrasives: Meets SSPC-AB1, type I (natural minerals) and type II (slags), class A.

B. SSPC-AB2 for recycled cleanliness.

C. SSPC-AB3 Class I (steel) or II (iron) for angular shaped grit. Shot abrasives are not acceptable.

D. Commercially available products or processes to render the hazardous waste stream non-hazardous and not exceeding toxicity threshold limits.

2.03 COATINGS

A. Specified in Coating Tabulations:

1. Apply only one coating system per option in Coating Tabulations.

2. Apply compatible products of same manufacturer for coating system components.

B. Volatile Organic Compounds (VOC): Do not exceed maximum permitted by Federal, State, and local air pollution control regulations as supplied in container or by addition of thinner material.

C. Factory color or tint only. Do not color or tint at jobsite.

D. Use manufacturer’s recommended thinners for coating materials.

E. Do not use accelerator products unless approved by COR.

2.04 FILLERS AND CAULKS

A. Caulks:

1. Coating manufacturer’s standard or compatible caulk material.

Revise 09 96 20 - 8

2. Polyurethane, Silicone, or Silicone Acrylic Caulk Material: Meets or exceeds ASTM C920 type S or M, grade NS, class 25, suitable for water immersion service.

B. Fillers:

1. Carboguard 501, as manufactured by Carboline, www.carboline.com.

2. Devmat 142HB, as manufactured by International Paint, www.international-pc.com.

3. PPG Amercoat 114 A, as manufactured by PPG, www.ppgpmc.com.

4. Steel Seam FT910, as manufactured by Sherwin Williams, www.sherwin-williams.com.

5. Provide one of the above fillers, or equal with following essential characteristics:

a. Coating manufacturer’s standard filler material.

b. Approved use by manufacturer.

2.05 MISCELLANEOUS MATERIALS

A. Deionized Water.

B. Chlor-Rid as manufactured by Chlor-Rid, www.Chlorid.com.

C. HoldTight 102 as manufactured by Holdtight Solutions, www.holdtight.com.

D. Chlor-Gone, as manufactured by Aquron, www.aquron.com.

E. Provide one of the above salt removers, or equal with following essential characteristics:

1. Commercially available additive for soluble salt removal;

2. Water soluble.

3. Biodegradable.

4. Zero VOCs.

PART 3 EXECUTION

3.01 PROTECTION OF ADJACENT SURFACES, EQUIPMENT

A. Remove, mask, or otherwise protect items or surfaces not coated from contamination and damage during cleaning and coating operations.

B. Examples include protecting mating and machined surfaces, mechanical and electrical equipment (open or enclosed), instruction and similar plates, and wet and newly coated surfaces.

Revise 09 96 20 - 9

3.02 COATING OF METALWORK EMBEDDED IN CONCRETE

A. For ferrous surfaces embedded in new concrete placements:

1. For atmospheric exposure on both sides of concrete or when mechanical bond is needed:

a. Extend primer coats 6 inches, minimum, into concrete embedment measured from face of concrete and along surface of embedded concrete faces. Examples include: above ground thrust or anchor blocks, floors, and walls with pipe or metal passing through the concrete.

2. For burial or immersion service exposure on either side of concrete faces:

a. Extend primer coat continuously through solid concrete structure.

Examples include: sill plates, anchor plates.

B. For ferrous surfaces with existing concrete-steel interfaces:

1. Coat all concrete-steel interfaces 6 inches onto concrete surface.

C. Caulk the concrete/steel interface to seal gaps at exposed faces in accordance with manufacturer’s instructions with maximum thickness of 1/2-inch.

3.03 SURFACE PREPARATION

A. Remove or repair surface irregularities and impart profile as specified:

1. Welds:

a. Welds: Smooth and continuous.

b. Weld spatter, slag, buckshot, laminations, and slivers: Remove and grind smooth.

c. Undercuts and porosity: Fill with weld material and grind smooth.

d. Projections, sharp edges, high points, fillets, and corners: Grind smooth to a radius of at least 1/16-inch.

2. Substrate Defects:

a. Pitting, gouges, scratches, porosity, and similar:

1) Grind smooth.

2) Repair defects exceeding 3/8-inch in depth as measured by pit gauge in accordance with AWWA C206 and AWS D1.1.

3. Grind full length of edges and corners smooth to a radius of at least 1/16-inch.

B. Surface Preparation Method:

1. See Coating Tabulations.

2. Compare prepared steel surfaces to following visual reference photographs for allowable visible contaminants and stains:

Revise 09 96 20 - 10

a. SSPC-VIS1 for abrasive blast cleaning.

b. SSPC-VIS3 for power and hand tool cleaning.

3. Assessment of Dust Contaminants:

a. Perform clear tape test method in accordance with ISO 8502-3.

b. Perform three tests per shift.

c. Acceptance Criteria: Degree of cleanliness shall meet Class 2.

C. Surface Profile:

1. Prepare as specified in Coating Tabulations.

2. Where not specified, prepare in accordance with manufacturer’s instructions for metallic substrates or existing coating surfaces and service environment.

3. Where manufacturer’s instructions do not specify a surface profile, prepare blasted surfaces to following profile:

a. Atmospheric Service Environments: 1 mil or greater angular profile and less than specified millage of first applied coat.

b. Burial and Immersion Service Environments: Angular profile 2 mil or greater and less than specified millage of first applied coat.

4. Inspect surface profile in accordance with NACE RP 0287:

a. Use replica tape suitable for surface profile depth range.

b. Perform at least two tests per 1,000 square feet.

D. Soluble Salts:

1. Measure concentration of chlorides, nitrates, and sulfates in accordance with SSPC Guide 15.

2. Perform at least two tests per 1,000 square feet of surface area. Include corrosion pit areas.

3. Acceptance criteria: Do not exceed 3 micrograms per square centimeter for chlorides and 5 micrograms per square centimeter for nitrates and sulfates.

E. Re-clean or perform additional surface preparation of contaminated surfaces before coating application.

3.04 COMPRESSED AIR EQUIPMENT

A. Keep air compressor and spray application equipment lines free of oil and moisture during work.

B. Compressed Air Quality:

1. Perform tests in accordance with ASTM D4285.

Revise 09 96 20 - 11

2. Perform test at the beginning of every shift.

3.05 FILLERS AND CAULK APPLICATION

A. Caulk areas including crevices, gaps, plate seams, skip welds, and conduit penetrations.

B. Fill areas including prepared pits, cavitation, and/or porosity, plate seams, and gaps at bolts and rivets as requested by COR.

C. Apply in a uniform texture, neatness, and color matched appearance.

D. Apply in accordance with manufacturer’s instructions and achieve tight bond to substrate or previous coats.

3.06 COATING APPLICATION

A. Stripe Coat:

1. Brush apply stripe coat.

2. Apply stripe coat prior to spray application of the primer, when practical.

3. Apply to edges, corners, interior angles, pits, plate seams, crevices, rivets, nuts, threads, bolts, washers, welds, and similar features.

B. Apply number of coats and coating thickness specified in Coating Tabulations.

1. Alternate coat colors to differentiate between coats.

2. Apply in accordance with manufacturer’s instructions.

3. Apply in accordance with SSPC-PA1.

C. Prevent overspray or dry spray. When such conditions occur, clean surfaces prior to application of subsequent coats.

D. Re-clean contaminated surfaces between coats.

E. Dry Film Thickness (DFT):

1. After each coat, inspect hardened coating system for DFT compliance in accordance with SSPC-PA2.

2. Acceptance Criteria: no single spot measurement less than 80 percent of specified minimum or more than 120 percent of specified maximum.

F. Discontinuity (Holiday) Testing:

1. Inspect interior pipe coatings in accordance with NACE SP 0188:

a. Use maximum test voltage for any DFT as recommended by coating manufacturer to prevent coating damage.

G. Coating Adhesion:

Revise 09 96 20 - 12

1. Test in accordance with ASTM D4541 at the request of the COR.

3.07 CONTRACTOR FIELD QUALITY TESTING

A. Inspection Equipment:

1. Calibrate inspection devices and equipment in accordance with the manufacturer’s instructions.

2. Verify calibration prior to every use.

B. Coating Inspector:

1. Conduct tests in presence of the COR.

2. Prepare Daily Reports to include:

a. Date of work.

b. Description of areas and work performed.

c. Environmental conditions.

d. Results from the following quality control tests:

1) Soluble salt.

2) Surface profile.

3) Visual comparison of prepared surfaces.

4) Assessment of dust contaminants.

5) Compressed air quality.

6) Dry film thickness (DFT).

7) Discontinuity (Holiday) testing.

8) Coating adhesion testing (when requested by the COR).

3. Provide rigging for COR to observe inspections.

4. Shall not be the same individual who performed the work being inspected.

5. Shall not have other duties in the project except as identified in 3.07 C.

6. Shall be on site during all coating operations.

C. Coating Quality Control Manager:

1. The Coating Quality Control Manager may serve as the coating inspector.

2. Review and sign Daily Reports for review by the COR.

3. Visit the site during start-up of coating activities until means and methods provide acceptable test results confirming that the work is being performed in accordance with specified requirements.

D. Final inspection will take place after repairs, but before placing into service.

Revise 09 96 20 - 13

3.08 REPAIR AND REMEDIAL WORK

A. Repair defective or damaged areas of coatings in accordance with coating manufacturer’s recommendations.

B. Where manufacturer’s instructions do not specify a coating repair procedure, repair defective or damaged coated areas in accordance with the following:

1. For metal substrate:

a. SSPC-SP10/NACE 2.

b. SSPC-SP11 where abrasive blasting is impractical.

2. For surrounding intact coating (nominal 2- to 4-inch margin):

a. SSPC-SP1.

b. Feather abrupt edges and around repair area by hand or power tool with non-woven pad into adjacent tightly bonded coatings.

c. Roughen or abrade surface in accordance with manufacturer’s recommendations to achieve matted or lusterless finish.

d. SSPC-SP1.

C. Repair damaged equipment or surfaces as requested by the COR.

3.09 PROTECTION OF NEWLY COATED SURFACES

A. Do not walk on, subject to abrading action, or move items until coats are hardened sufficiently to resist damage.

3.10 COATING TABULATIONS

Tabulation No. 1

Items to be coated – atmospheric service:

a. Unit 1 and Unit 2: Blast and recoat exterior coated surfaces of penstocks in penstock gallery, including manhole exterior covers, associated metalwork, supporting rings, and walkway supports. There is approximately 42,000 square feet total.

b. Unit 1 and Unit 2: Blast and recoat exterior surfaces of scroll case and draft tube man-doors. There is approximately 30 square feet per unit.

c. Unit 1 and Unit 2: Blast and coat exterior surfaces of new 14-inch diameter steel vent piping. There is approximately 470 linear feet of 14-inch diameter pipe total.

d. Blast and coat exterior surfaces of new 4-inch diameter steel piping for air valve assembly. There is approximately 4 linear feet of 4-inch diameter pipe.

Revise 09 96 20 - 14

Notes:

1. Water drains along penstock gallery floor and concrete surfaces may be damp or dripping. Refer to Section 01 57 30 – Water Pollution Control and Section 02 70 10

– Removal and Control of Water.

2. Do not coat mating contact surfaces, or surfaces which would be impaired by paint.

Coating materials– Option 1 Zinc rich epoxy primer with polysiloxane finish coats

Number and thickness of coats

Surface preparation method

Prime coat:

Amercoat 68HS VOC, PPG Protective & Marine Coatings

Zinc Clad III HS 100, Sherwin Williams Company

Finish coat:

PSX 700 FD, PPG Protective & Marine Coatings

Sherloxane 800 FD, Sherwin Williams Company

Color: Manufacturer’s standard light color and gloss

1 or more prime coats, apply at 3 to 5 mils DFT per coat, plus stripe coats.

2 or more finish coats, apply at 3 to 6 mils DFT per coat, plus two stripe coats.

Total system excluding stripe coats:

9-mil DFT, minimum 17-mil DFT, maximum

SSPC-SP1 followed by:

Bare steel: SSPC-SP10

Follow manufacturer’s surface preparation and application instructions to apply subsequent coats

Coating materials - Option 2 Moisture-cured urethanes

Number and thickness of coats

Surface preparation method

Prime coat:

MC-Miozinc 100, Wasser Corporation

1 or more coats.

Apply at 3 to 5 mils DFT, per coat, plus stripe coats.

SSPC-SP1 followed by:

Bare steel: SSPC-SP10

Revise 09 96 20 - 15

Intermediate and finish coats:

MC Ferrox B 100, Wasser Corporation

Color: Manufacturer’s standard light color and gloss

2 or more coats.

Apply at 3 to 5 mils DFT, per coat.

Total system, excluding stripe coats:

9-mil DFT, minimum 15-mil DFT, maximum

Follow manufacturer’s surface preparation and application instructions to apply subsequent coats.

PERFORMANCE REQUIREMENTS:

Testing Protocol Acceptance Criteria

Abrasion resistance, ASTM D4060, CS-17 wheel, 1,000 cycles, 1-kg load:

100 milligram loss or less

Direct impact, ASTM D2794 100 inch-pounds

Pulloff adhesion, ASTM D4541, annex A2, type II tester:

800 psi or greater

Cyclic testing salt fog/UV, ASTMD 5894:

1/4 inch or less undercutting at 3000 hrs

Tab AE-08.DOC

Revise 09 96 20 - 16

Tabulation No. 2

Items to coated: Painting galvanizing

a. Prepare surface and coat interior and exterior surfaces of new 3-inch diameter piping, including fittings and associated equipment. There is approximately 234 linear feet of 3-inch diameter pipe.

b. Prepare surface and coat new air vent piping supports, including anchor bolt heads.

There are approximately 63 pipe supports.

Notes:

1. Stabilizing or storage treatments, if present on galvanized surfaces, shall be removed by

(a) SSPC-SP1 and sweep blast or (b) manufacturer’s compatible wash treatment.

Coating materials – Option 1 Solvent Borne Epoxy

Number and thickness of coats

Surface preparation method

Prime and finish coat:

Amerlock 400 or Amerlock 2, PPG Protective & Marine Coatings

Macropoxy 646 or Duraplate 235 LV, Sherwin Williams Company

Hi-Build Epoxoline II Series 69V, Tnemec Company

Carboguard 891, Carboline Company

Interzone 954, International Paint

2 or more coats.

Apply at 4 to 8 mils DFT, per coat, plus stripe coats.

Total system, excluding stripe coats:

8-mil DFT, minimum 16-mil DFT, maximum

SSPC-SP1 followed by:

Galvanized steel: SSPC- SP16 or SSPC-SP3 where abrasive blasting is impractical

Coating materials – Option 2 Moisture-cured urethane

Number and thickness of coats

Surface preparation method

Prime coat:

MC-Miozinc 100, Wasser Corporation

1 or more coats.

Apply at 3 to 5 mils DFT, per coat, plus stripe coats.

SSPC-SP1 followed by:

Galvanized steel: SSPC- SP16 or SSPC-SP3 where abrasive blasting is impractical

Revise 09 96 20 - 17

Finish coat:

MC-Tar 100, Wasser Corporation

1 or more compatible manufacturer’s finish coats.

Apply at 5 to 7 mils DFT, per coat.

Total system, excluding stripe coats:

8-mil DFT, minimum 12-mil DFT, maximum

Follow manufacturer’s surface preparation and application instructions to apply subsequent coats.

Coating materials – Option 3 100% solids epoxy

Number and thickness of coats

Surface preparation method

All coats:

376F-60LT; Akzo Nobel Enviroline

NSP 120HB High Performance Epoxy; NSP Specialty Products

Color: Manufacturer’s standard light color and gloss

1 or 2 base coats.

Total system measured to steel substrate, excluding stripe coats:

40-mil DFT, minimum 60-mil DFT, maximum

SSPC-SP1 followed by:

Galvanized steel: SSPC- SP16 or SSPC-SP3 where abrasive blasting is impractical

Follow manufacturer’s surface preparation and application instructions to apply subsequent coats.

Coating materials– Option 4 polysiloxane

Number and thickness of coats

Surface preparation method

All coats:

PSX 700 FD, PPG Protective & Marine Coatings

Sherloxane 800 FD, Sherwin Williams Company

Color: Manufacturer’s standard light color and gloss

2 or more finish coats, apply at 4 to 6 mils DFT per coat, plus two stripe coats.

Total system excluding stripe coats:

8-mil DFT, minimum 12-mil DFT, maximum

SSPC-SP1 followed by:

Galvanized steel: SSPC- SP16 or SSPC-SP3 where abrasive blasting is impractical

Follow manufacturer’s surface preparation and application instructions to apply subsequent coats

Revise 09 96 20 - 18

PERFORMANCE REQUIREMENTS:

Testing Protocol Acceptance Criteria

Abrasion resistance, ASTM D 4060, CS-17 wheel, 1,000 cycles, 1-kg load:

100 milligram loss or less

Direct impact, ASTM D2794 Solvent Borne Epoxy: 30 inch-pounds MC Urethanes, 100% Solids Epoxy: 100 inch-pounds

Pulloff adhesion, ASTM D4541, annex A2, type II tester:

500 psi or greater

Cyclic testing salt fog/UV, ASTMD 5894:

1/4 inch or less undercutting at 3000 hrs

Tab AE-03.DOC

Tabulation No. 3

Items to be coated – equipment in atmospheric service:

a. Motor operator, gearbox, and appurtenant equipment for 40-inch jet-flow gate, including unexposed surfaces that require coatings, such as interior of cabinets, enclosures, and equipment.

b. Air valve assembly, 3-inch gate valve for 3-inch air vent, and drain valves, except valve interiors and surfaces not intended to be painted.

c. Equipment and materials for complete electrical system.

Coating materials Factory coating system

Number and thickness of coats

Surface preparation method

Factory's standard surface preparation and permanent coating system.

Color and gloss: Factory's standard.

Tabulation No. 4

Items to be coated – galvanizing repair:

a. Galvanized surfaces of miscellaneous metalwork.

b. Damaged galvanized surfaces not otherwise tabulated.

Revise 09 96 20 - 19

Tabulation No. 4

Coating materials

Number and thickness of coats

Surface preparation method

Repair damaged galvanized surfaces in accordance with ASTM A780, except repair materials containing cadmium and lead are not permitted.

099CT_35.DOC

Revise 09 96 20 - 20

Tabulation No. 5

Items to receive a uniform passivation layer:

a. Stainless steel surfaces not otherwise tabulated herein, except valve interiors and surfaces not intended to be painted.

Note: New stainless steel surfaces to receive uniform passivation at point of manufacture.

Clean and restore uniform passivation layer on damaged, contaminated, or depassivated stainless steel surfaces by methods listed below.

Coating materials Number and thickness of coats

Surface preparation method

See Section 09 97 02 – Impacted Immersion Coatings. ASTM A380

Repassivation Methods and Inspection Procedures of Contaminated Stainless Steel Surfaces

Degree of surface contamination

ASTM A 380* Surface preparation method**

ASTM A 380* Surface preparation test**

Locally heavy surface contaminated areas:

Contaminated by free iron, oxide scale, or rust related contaminates caused by field welding or cutting.

Method 5. - "Descaling", General

Method 5.3 - "Mechanical Descaling" by grinding and/or Method 6.3 - "Cleaning of Welds and Weld-Joint Areas"

Method 7.2 - "Gross Inspection"

Methods 7.2.5 - "Tests for Free Iron: Gross Indications"

General surface contaminated areas:

Contaminated by free iron, oxide scale, or rust related contaminates.

Method 5. - "Descaling," General

Method 5.2 - "Chemical Descaling"

Method 5.2.2.(1) - "Chemical Descaling" by swab or spray wetting the surfaces and/or Method 5.3 - "Mechanical Descaling" by grinding

Method 7.2 – “Gross Inspection”

Method 7.2.5 – Tests for Free Iron: Gross Indication

Revise 09 96 20 - 21

Tabulation No. 5

General surface contaminated areas:

Contaminated by grease, oil, residual chemical films, or other non-free iron related contaminates.

Method 6.2.10 - "Water Jetting" and/or

Method 6.4 - "Final Cleaning, or Passivation, or Both", wiping with a clean, solvent-moistened cloth

Method 7.2 - "Gross Inspection"

Method 7.2.2 - "Wipe Tests"

Where films are not detectable under white light conditions, use

Method 7.3 - "Precision Inspection"

Method 7.3.2 - "Black Light Inspection"

* Other ASTM A 380 methods may be used instead of above specified surface preparation methods and inspection procedures.

** Do not damage attached parts, adjacent parts, or materials by field cleaning and passivation methods of stainless steel.

099CT_41.DOC

END OF SECTION

Revise 09 96 20 - 22

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Impacted Immersion Coatings

Revised 09 97 02 - 1

SECTION 09 97 02

IMPACTED IMMERSION COATINGS

PART 1 GENERAL

1.01 MEASUREMENT AND PAYMENT

A. General:

1. Payment for various items to be recoated or spot repaired includes the following costs:

a. Containment, safety, and health activities for coatings work.

b. Coating removal, handling, and disposal, including abrasive disposal.

c. Surface preparation, such as abrasive blasting, cleaning, and grinding.

d. Coating application and remedial work.

B. Blast and Recoat Interior Surfaces of Penstock and Outlet Tube, including Embedded Pipe Appurtenances for Unit 1:

1. Measurement: Surface area blasted and recoated.

2. Payment: Unit price offered in the Price Schedule.

C. Blast and Recoat Interior Surfaces of Penstock and Outlet Tube, including Embedded Pipe Appurtenances for Unit 2:

1. Measurement: Surface area blasted and recoated.

2. Payment: Unit price offered in the Price Schedule.

D. Blast and Recoat Interior Surfaces of Scroll Case for Unit 1:

1. Measurement: Surface area blasted and recoated.

2. Payment: Unit price offered in the Price Schedule.

E. Blast and Recoat Interior Surfaces of Scroll Case for Unit 2:

1. Measurement: Surface area blasted and recoated.

2. Payment: Unit price offered in the Price Schedule.

F. Spot Repair Turbine Runner for Unit 1:

1. Measurement: Surface area delineated as repair area.

a. No single repair area will be measured as less than 1 square foot.

1) Delineation of each repair area to be determined by COR.

2) Each repair area may contain multiple spot repairs.

Revised 09 97 02 - 2

2. Payment: Unit price offered in the Price Schedule.

G. Spot Repair Turbine Runner for Unit 2:

1. Measurement: Surface area delineated as repair area.

a. No single repair area will be measured as less than 1 square foot.

1) Delineation of each repair area to be determined by COR.

2) Each repair area may contain multiple spot repairs.

2. Payment: Unit price offered in the Price Schedule.

H. Blast and Recoat Draft Tube Steel Lining for Unit 1:

1. Measurement: Surface area blasted and recoated.

2. Payment: Unit price offered in the Price Schedule.

I. Blast and Recoat Draft Tube Steel Lining for Unit 2:

1. Measurement: Surface area blasted and recoated.

2. Payment: Unit price offered in the Price Schedule

J. Blast and Recoat Draft Tube Pier Nose and Pier Grating for Unit 1:

1. Measurement: Surface area blasted and recoated.

2. Payment: Unit price offered in the Price Schedule.

K. Blast and Recoat Draft Tube Pier Nose and Pier Grating for Unit 2:

1. Measurement: Surface area blasted and recoated.

2. Payment: Unit price offered in the Price Schedule.

L. Cost:

1. Include cost of coating interior and exterior ferrous surfaces of new 40-inch jet-flow gates in applicable lump sum prices offered in the Price Schedule for Jet- Flow Gate for Unit 1 and Jet-Flow Gate for Unit 2.

2. Include cost of coating interior surfaces of new 14-inch diameter steel vent piping in applicable linear foot prices offered in the Price Schedule for Furnish and Install Lined and Coated 14-Inch Steel Vent Piping for Unit 1 and Furnish and Install Lined and Coated 14-Inch Steel Vent Piping for Unit 2.

3. Include cost of coating interior surfaces of new 4-inch steel pipe for air valve assembly and drain valves in lump sum price offered in the Price Schedule for Furnish Steel Pipe for Air Valve Assembly and Drain Valves.

1.02 REFERENCE STANDARDS

A. ASTM International (ASTM)

Revised 09 97 02 - 3

1. ASTM D153-84(2020) Specific Gravity of Pigments

2. ASTM D281-12(2016) Oil Absorption of Pigments by Spatula Rub-out

3. ASTM D520-00(2019) Zinc Dust Pigment

4. ASTM D561-82(2020) Carbon Black Pigment for Paint

5. ASTM D740-11(2019) Methyl Ethyl Ketone

6. ASTM D841-19 Nitration Grade Toluene

7. ASTM D1045-19 Sampling and Testing Plasticizers Used in Plastics

8. ASTM D1152-06(2012) Methanol (Methyl Alcohol)

9. ASTM D1153-12 Methyl Isobutyl Ketone 1, 2

10. ASTM D1200-10(2018) Viscosity by Ford Viscosity Cup

11. ASTM D1210-05(2014) Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type Gage

12. ASTM D2917-07(2013) Methyl Isoamyl Ketone

13. ASTM D3465-14 Purity of Monomeric Plasticizers by Gas Chromatography

14. ASTM D3721-05(2019) Synthetic Red Iron Oxide Pigment

15. ASTM D4285-83(2018) Indicating Oil or Water in Compressed Air

16. ASTM D6677-18 Evaluating Adhesion by Knife

17. ASTM E1347-06(2020) Color and Color-Difference Measurement by Tristimulus Colorimetry

B. SAE International (SAE)

1. AMS-STD-595 Colors Used in Government Procurement

C. International Organization For Standardization (ISO)

1. ISO 8502-3:2017 Assessment of Dust on Steel Surface Prepared for Painting (Pressure-Sensitive Tape Method)

D. Association for Materials Protection and Performance (AMPP), formerly The Society for Protective Coatings (SSPC) and NACE International (NACE)

1. SSPC-AB1-19 Mineral and Slag Abrasives

2. SSPC-AB2-16 Cleanliness of Recycled Ferrous Metallic Abrasives

3. SSPC-AB3-17 Newly Manufactured or Re-Manufactured Steel Abrasives

Revised 09 97 02 - 4

4. SSPC-Guide 15-13 Field Methods for Retrieval and Analysis of Soluble Salts on Substrates and Other Nonporous Substrates

5. SSPC-PA2-18 Measurement of Dry Paint Thickness with Magnetic Gages

6. SSPC-QP1-19 Evaluating Painting Contractors (Field Application to Complex Industrial Structures)

7. SSPC-QP2-19 Evaluating Painting Contractors (Field Removal of Hazardous Coatings From Complex Industrial Structures)

8. SSPC-QP3-10 Evaluating the Qualification of Shop Painting Contractors

9. SSPC-SP1-16 Solvent Cleaning

10. SSPC-SP5/NACE 1-07 White Metal Blast Cleaning

11. SSPC-SP WJ-1/NACE WJ-1-17 Surface Preparation Standard – Waterjetting Cleaning of Metals – Clean To Bare Substrate

12. SSPC-VIS1-04 Guide and Reference Photographs for Steel Surfaces Prepared by Abrasive Blast Cleaning

13. SSPC-VIS3-04 Visual Standard for Power- and Hand-Tool Cleaned Steel

14. NACE SP 0287-16 Field Measurement of Surface Profile of Abrasive Blast Cleaned Steel Surfaces Using a Replica Tape

15. NACE SP 0188-06 Discontinuity (Holiday) Testing of New Protective Coatings on Conductive Substrates

1.03 SUBMITTALS

A. Submit the following in accordance with Section 01 33 00 - Submittals.

1. Include the following information with each set of data or certification:

a. Applicable tabulation number from Coating Tabulations.

b. Identification of “Items to be coated” including sub-letter and sub-number listed in Coating Tabulations.

B. RSN 09 97 02-1, Approval Data:

1. For each coating material:

Revised 09 97 02 - 5

a. Manufacturer’s product data, application, and SDS sheets.

b. Supplier’s name, address, and phone number.

c. Identification of “Items to be coated” including sub-letter and sub-number listed in Coating Tabulations.

2. For each caulk and filler:

a. Manufacturer’s product data, application, and SDS sheets.

b. Supplier’s name, address, and phone number.

c. Identification of areas of use including sub-letter and sub-number listed in Coating Tabulations.

3. For each substituted coating material “equal” to specified product in Coating Tabulation:

a. Applies only to 4-inch, 8-inch, and 14-inch diameter pipe. See Section 09 96 20 – Coatings, Tabulation No. 02, for allowable substituted coating material “equal” to specified product.

b. List of not less than 3 successful material applications of similar size and complexity:

1) Project name, location, type of structure, and application dates.

2) Owner’s name, address, and telephone number.

C. RSN 09 97 02-2, Final Approval Data:

1. For each coating material and thinner:

a. Purchase orders including order number, date, manufacturer’s designated product name, batch number(s) (excluding thinner), and quantity purchased.

D. RSN 09 97 02-3, Qualifications:

1. Coating contractor:

a. Current SSPC-QP1 and SSPC-QP2 for field coating operations.

1) Resume to include list of not less than 3 jobs removing coal tar enamel coatings from structures of similar size and complexity, including owner’s name, address, and telephone number.

b. Current SSPC-QP3 certification for shop coating operations.

2. Coating applicator:

a. Current Coating Application Specialist (CAS).

b. Resume to include list of not less than 3 jobs applying vinyl coatings to structures of similar size and complexity, including owner’s name, address, and telephone number.

3. Coating Quality Control Manager:

Revised 09 97 02 - 6

a. Current Level 3 certification for NACE Certified Coatings Inspector (CIP) or SSPC Protective Coatings Inspector (PCI).

b. Resume to include list of not less than 5 years of jobs applying vinyl coatings of similar size and complexity, including owner’s name, address, and telephone number.

4. Coating Inspector:

a. Current Level 1 minimum certification for NACE Certified Coatings Inspector (CIP) or SSPC Protective Coatings Inspector (PCI).

b. Resume to include list of not less than 2 years of jobs applying vinyl coatings of similar size and complexity, including owner’s name, address, and telephone number.

E. RSN 09 97 02-4, Samples:

1. Liquid and mastic materials, except thinners: From batches to be used.

2. Sample size:

a. Single component coating materials: 1-quart sample.

b. Three-component coating materials: 1-kit sample, with constituents supplied in separate containers.

3. Label each material sample with the following:

a. Contractor’s name.

b. Specification name.

c. Contract number.

d. Manufacturer’s designated product name.

e. Batch number(s) for each material represented.

F. RSN 09 97 02-5, Corps of Engineers Quality Assurance Test Report

1. Submit Quality Assurance Test Report for each batch number.

2. The Government accepts pre-approved batches with Corps of Engineers Paint Laboratory certification.

G. RSN 09 97 02-6, Quality Control Plan:

1. Quality Control Procedure:

a. Quality control plan.

b. Procedure for addressing identified non-conformities.

H. RSN 09 97 02-7, Government Inspection Notification Letter:

1. Include the jet-flow gate coating schedule, initial coating application date, and physical address where the coating application will occur.

Revised 09 97 02 - 7

2. Provide COR minimum of 28 days’ notice before initial coating application date for locations in the United States of America and 56 days’ notice before application date for locations outside of the United States of America.

I. RSN 09 97 02-8, Contractor Quality Testing Reports:

1. Comprehensive report of daily quality control test reports.

1.04 DELIVERY, STORAGE, HANDLING

A. Deliver materials to jobsite in original, undamaged, unopened containers labeled with manufacturer’s name, designated product name, batch number, date of manufacture, color, and any special instructions.

B. Deliver materials in containers not larger than 5 gallons as packaged by manufacturer unless suitable equipment is provided at jobsite to handle and thoroughly mix materials in larger containers.

C. Store paints and thinners accordance with manufacturer's written directions, and as a minimum, store off the ground, under cover, with sufficient ventilation to prevent buildup of flammable vapors, and at temperatures between 50 to 95 degrees F.

D. Do not expose to direct sunlight during storage.

E. Do not use coating material which has exceeded manufacturer’s specified storage stability period (shelf life).

1.05 AMBIENT CONDITIONS

A. Maintain environmental conditions to meet coating manufacturer’s requirements during surface preparation, coating application, and curing period. Provide heating or cooling, and dehumidification as needed. Complete curing before placing the coating systems into service.

B. Coatings shall be applied when the substrate surface temperature is 5 degrees F or more above the dew point temperature and for at least 8 hours after application.

1.06 PROJECT CONDITIONS

A. Existing coatings may contain hazardous materials. Refer to Section 02 83 20 – Removal and Disposal of Coatings and Equipment with Coatings Containing Hazardous Materials.

B. Existing packing materials associated with expansion joint and tube valve wall gland may contain hazardous materials. Refer to Section 02 82 20 – Removal and Disposal of Asbestos Containing Materials.

C. Water control required within penstock, penstock gallery, and draft tubes. See Section 02 70 10 – Removal and Control of Water.

Revised 09 97 02 - 8

D. Powerplant contains equipment that is sensitive to dust and other airborne particulates or solvent, requiring ventilation of surface preparation and coating activities by means other than through the powerplant.

E. Steel substrates contain pitting corrosion that requires welding prior to coating.

1. See Section 35 21 94 – Steel Piping for pitting corrosion weld repair.

F. Steel and stainless steel substrates contain cavitation damage that requires welding prior to coating.

1. See Section 48 13 10 – Vertical Francis Turbine Runner Repair for cavitation damage weld repair.

G. Coating Tabulation No. 01 includes coating and recoating of interior surfaces of 4-inch, 8-inch, and 14-inch diameter piping. If a substituted coating material will be proposed, submit data in accordance with RSN 09 97 02-1, Approval Data.

1. See Section 09 96 20 – Coatings, Tabulation No. 02, for allowable substituted coating material “equal” to specified product.

PART 2 PRODUCTS

2.01 EQUIPMENT

A. Surface Preparation and Spray Application Equipment:

1. Sized in accordance with coating manufacturer’s recommendations.

2. Provide:

a. Pressure gauges and pressure regulators.

b. Air supply lines free from oil and moisture.

2.02 ABRASIVES

A. Mineral and Slag Abrasives: Meets SSPC-AB1, type I (natural minerals) and type II (slags), class A.

B. SSPC-AB2 for recycled cleanliness.

C. SSPC-AB3 Class I (steel) or II (iron) for angular shaped grit. Shot abrasives are not acceptable.

D. Commercially available products or processes to render the hazardous waste stream non-hazardous and not exceeding toxicity threshold limits.

Revised 09 97 02 - 9

2.03 COATINGS

A. Line metal containers with coating resistant to solvents in the formulations and capable of effectively isolating paint from contact with metal container.

B. Paint shall show proper proportions of specified materials when analyzed by chromatographic and/or spectrophotometric methods.

C. Viscosity of paint using ASTM D1200 and a No. 4 Ford cup: Between 60 and 90 seconds.

D. Paint Formulations:

1. Formula V-766E, Vinyl-Type…