TNEMEC ELEVATED TEMERATURE VINYL ESTER LINING INSTALLATION GUIDE ProPolymer Series 1402, 1422 and 1432 Direct Food Contact FDA Title 21 CFR 175.

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1 1.0 Scope 1.1 This recommendation covers the requirements for the surface preparation and the application of primers and finish coat linings for the interior surfaces of carbon/stainless steel vessels in direct food contact service. For additional preparation and installation requirements see Tnemec ProPolymer Installation Procedures and current product data sheets. 1.2 The lining materials, primers, finishes and ancillary additives, covered in this installation guide are compliant to the requirements of FDA: Title 21 CFR for direct food contact. Formulations, raw material suppliers and extraction testing have all been completed by a third party to assure compliance under Conditions C, D & E and for all food groups. Upon request a compliance and review data package is available from Tnemec Technical Services or through an authorized representative of Tnemec. Other vendors wishing to be considered as an equal, must provide equivalent documentation from third party independent sources. 1.3 Products covered, but not necessarily limited to, for use in this installation guide that are compliant with the requirements of FDA: Title 21 CFR ProPolymer Series 1402, 1402 with , Series 1422 and Series This installation guide is not intended to supersede any specification. It is intended as assistance to the specifying source, the installation contractor and the field inspector. If a project is referenced in the cover sheet, some adjustments herein, may have been made for this job that do not necessarily mirror the information on the product data sheet. This guide will supersede the product data sheet in those cases. 1.5 This is only a guide and field conditions may warrant the alterations of some procedures. Check with the owner, or the owner s representative, or the material supplier when in doubt.

2 2.0 Surface Preparation 2.1 All areas to be coated shall be thoroughly cleaned and disinfected prior to abrasive blasting operations as per Section 4: Procedures Before Cleaning in SSPC-SP 10 / NACE No. 2 / ISO SA 2.5, Near-White Metal Blast Cleaning. 2.2 All stainless steel and carbon steel interior surfaces to be lined shall be abrasive blasted with an iron free angular abrasive to achieve a blast profile of no less than 3.0 mils. Steel substrates shall be cleaned to an SSPC-SP 10 / NACE No. 2 / ISO SA 2.5, Near-White Metal Blast Cleaning. 2.3 An optional procedure on new stainless steel tanks and vessels, which provides an advantage for the contractor is to apply a thin film of a sacrificial coating, such as Tnemec 2H in black prior to abrasive blasting. It has been found to assist the blaster in cleaning progress, giving a differential appearance between blasted and non-blasted surfaces. 2.4 This blast quality must be maintained throughout the lining project. Options for air-conditioning and desiccating equipment, timing of priming and other precautionary measures to maintain the specified cleanliness and abrasive profile shall be employed. In the event of flash-rusting or the occurrence of other surface contamination, substrate shall be re-cleaned and the referenced abrasive blast quality shall be restored prior to proceeding with lining application. 2.5 All blasted surfaces are to be blown down with clean dry compressed air and/or vacuumed with mechanical brushing equipment, removing all traces of abrasive, dust and debris from all surfaces, pockets and corners.

3 3.0 Chloride Removal 3.1 Upon the completion of the abrasive blast the tank interior shall be tested for the presence of free chloride ions. If present at any given reading above 3-ppm remediation must occur to remove them. Chemical assistance from products such as, but not limited to Chlor-Rid, and/or copious amounts of water may be employed by the contractor to assist in chloride removal. 3.2 Upon the completion of the chloride remediation, multiple tests should be performed on the surface in different locations to assure the level of free chloride ions is 3-ppm or less. If any of the test results indicate a level higher than 3 ppm then a second remedial application shall be done. Retest after this application. If still present, contact a Tnemec coatings representative before proceeding. 3.3 Once a contaminant free surface has been confirmed it will be necessary to re-abrasive blast the tank or vessel to re-establish all aspects of the SSPC-SP 10 / NACE No. 2 / ISO SA 2.5, Near-White Metal Blast Cleaning, including surface profile prior to proceeding with lining application.

4 4.0 Materials 4.1 For this project all lining materials from primer to finish coat(s) must be independently verified, including extraction testing proving compliance to FDA: Title 21 CFR for Conditions C, D & E. See Scope 1.2 On this project, all linings are to be solely sourced from the Tnemec Company, Inc. (Kansas City, MO). All primers, thinners, additives shall be from the manufacturer in new and unopened containers. Primer: ProPolymer Series 1402 Vinyl Ester Primer Spray or roll applied at 3 5 mils ( microns) First Coat: ProPolymer Series 1422 Vinyl Ester - Flake Glass Filled Trowel applied at mils ( microns) Color 909 Dent Yellow or 901 White Second Coat: ProPolymer Series 1422 Vinyl Ester - Flake Glass Filled Trowel applied at mils ( microns) Color 908 Lavender Finish Coat: ProPolymer Series 1432 Vinyl Ester - Flake Glass Filled Spray or roll applied at mils ( microns) Color 901 White System Thickness: 93 mils (2,362 microns) minimum; 160 mils (4,064 microns) maximum

5 5.0 Application Parameter & Details 5.1 All manufacturers mixing application, finishing and safety instructions must be strictly followed through all phases of the lining application. 5.2 When any of the following conditions exist, no blasting, priming or any other part of the lining system application shall be attempted without written waiver from the lining manufacturer. A. The relative humidity in the work area is greater than 90 percent. B. The surface temperature is less than 5 F above the dew point of the air in the work area. C. The temperature of the steel surface, lining materials or the air in the work area is higher than 110 F or less than 60 F. 6.0 ProPolymer Series 1402 Primer, Scratch Coat & 2 Cant Coving 6.1 Apply ProPolymer Series 1402 by spray or roller as soon as possible after abrasive blasting and dust down has been completed. Mix and apply the primer by spray or roller application in accordance with the manufacturer s instructions on the product data sheet. To all internal surfaces, apply 3-5 mils ( microns). Prime all surfaces to be lined, do not allow product to puddle on horizontal surfaces. 6.2 ProPolymer Series 1402 has a maximum recoat window of 24-hours at 70 F/21 C. If exceeded, the primer shall be scuff sanded to dull surface prior to applying additional coat(s). 6.3 For surfacing of corrosion pits or other irregularities, ProPolymer Series 1402 may be adjusted with Bulking Additive (purchased only from Tnemec) to make a dry-wall mud consistency mixture. Scratch this material onto the surface using trowels to push material into pits and voids. A very firm mixture can be made with a ratio of 1-part of Series 1402 to 1.5-parts of , by volume for coving and89. Remove excess from surface. May also be used as an additive to create a cove. Series 1402 with has been independently verified to meet FDA compliance for direct food contact.

6 7.0 ProPolymer Series 1422 / First Coat Application 7.1 The primer and scratch coat must be sufficiently cured prior to the basecoat application. Prior to the application of the first trowel coat, the surface of the previously applied material must be clean, tack-free and within the manufacturer s recoat window. If beyond the recoat window, specific manufacturer s instructions must be followed. In general, any primed areas that have not received an additional finish coat of materials, within 24-hours at 70 F/21 C shall be scuff sanded to dull surface prior to applying additional coat(s). Review the current product data sheet for minimum and maximum recoat windows for Series 1422 material. 7.2 Remove any dirt, dust or other contamination prior to the application of the basecoat. 7.3 Follow product data sheet and Tnemec ProPolymer Installation Procedures for additional mixing, transfer and finishing instructions. Application of the lining material is done by trowel application at mils (1,016-1,651 microns) per coat. Wet film thickness readings should be taken during application to ensure proper film build. All trowel applications shall be finished by lightly rolling the surface with a solvent-resistant, 3/8-1/2-inch nap, phenolic core, non-shedding roller, slightly dampened with to orient and lay down the glass flake. 7.4 Visually inspect the coated surfaces for irregularities, voids and other imperfections. Random checks of the dry film thickness must be taken to identify extreme highs and lows, no less than (2), approxametly every 100-square feet. Adjust second trowel coat thicknesses based on these results.

7 8.0 ProPolymer Series 1422 / Second Coat Application 8.1 Prior to the application of the second trowel coat, the surface of the previously applied material must be clean, tack-free and within the manufacturer s recoat window. Review the current product data sheet for minimum and maximum recoat windows for Series 1422 material. 8.2 Remove any dirt, dust or other contamination prior to the application of the second trowel coat. 8.3 Follow the product data sheet and Tnemec ProPolymer Installation Procedures for additional mixing, transfer and finishing instructions. Application of the lining material is done by trowel application at mils (1,016-1,651 microns) per coat. Wet film thickness readings should be taken during application to ensure proper film build. All trowel applications shall be finished by lightly rolling the surface with a solvent-resistant, 3/8-1/2-inch nap, phenolic core, non-shedding roller, slightly dampened with to orient and lay down the glass flake. 8.4 Visually inspect the coated surfaces for irregularities, voids and other imperfections. Confirm no less than 85-mils (2,159 microns). Make corrections and adjustments as needed before proceeding to holiday and pinhole detection.

8 9.0 Holiday and Pinhole Detection 9.1 ASTM D / Method 2, shall be the standard. Contractor shall spark test the entire lined surface (every square foot) using a variable voltage spark tester at a target 100 volts/mils, or no less than 80 volts/mils. Do not exceed 100-volts per mil. NOTE: The spark testing must be witnessed by Tnemec Company or owner approved Inspector, who must sign off on the Contractor s inspection data sheet providing verification of the stated results. 9.2 After completion of the spark testing and repair of all pinholes and voids, only the repaired areas shall be spark tested again and repaired if necessary ProPolymer Series 1432 / Finish Coat Application 10.1 Prior to the application of the finish coat, the surface of the previously applied material must be clean, tack-free and within the manufacturer s recoat window. Review the current product data sheet for minimum and maximum recoat windows for Series 1432 material 10.2 Follow product data sheet and Tnemec ProPolymer Installation Procedures for additional mixing, transfer and finishing instructions. Mix and apply the finish coat by spray or roller application in accordance with the manufacturer s instructions to all internal surfaces, at mils ( microns) per coat. Measure the wet film thickness during the application to ensure proper film thickness. Note: Application by roller, will often times require more than one coat to achieve specified film thickness Reference Tnemec s product data sheets for appropriate cure schedules or consult a Tnemec representative.

9 11.0 Door Gasket Area/Flange Face Application 11.1 Apply ProPolymer Series 1402 primer to all flange/door faces at 3-5 mils ( microns) Mix and apply the three, (3), coats of ProPolymer Series White (or other approved color) in accordance with the manufacturer s instructions on the gasket area of the door. Apply at a rate of mils ( microns) per coat. Between applications of the ProPolymer Series 1432 sand the previous coat. Total ProPolymer Series 1402/1432 thickness, shall be no less than 30 mils (76 microns) Curing Schedule 12.1 Reference Tnemec ProPolymer product data sheets for appropriate cure schedules or consult a Tnemec representative Confirm that a minimum of 24-hours at no less than 70 F/21 C has elapsed with good air movement prior to checking film hardness If necessary or desired, force curing may be done with hot potable water or forced conditioned air. Consult Tnemec Technical Services for specific details Interior of tank shall be thoroughly washed prior to placing into service. Determination of responsibility for this step to be clarified at time of quotation for work between owner and contractor.

10 13.0 Quality Control Documentation 13.1 Upon completion of the lining, all daily quality control documents must be submitted to the owner Daily documentation shall include but not limited to the following: environmental, surface cleanliness, profile measurement, start/stop times, material temperature, blast media used, material batch numbers, dry film thickness readings, holiday test results, people present on jobsite. END SPECIFICATION SUPPORTIVE DOCUMENTS Tnemec ProPolymer Installation Procedures for this system SSPC-SP 10 / NACE NO. 2 / ISO SA 2.5 Near-White Metal Blast Cleaning standard(s) ASTM D Holiday Testing -standard ProPolymer Series 1402 Vinyl Ester Primer PDS ProPolymer Series 1422 Lining PDS ProPolymer Series 1432 Lining - PDS Smoothing Liquid PDS Tnemec Bulking Additive -PDS