Laserfiche WebLink
0 <br /> f) Seams or joint repairs shall be continuously welded. <br /> 2.4.3 Joint Repairs <br /> a) Skip welds, lap plates and butt joints are to be filled with EnvirolineTM 125U-9300 caulk. <br /> Cover the entire area up to 2 inches of each side of joint. <br /> b) After the EnvirolineTM 1250-9300 caulk is slightly tacky the EnvirolineTM 1250 topcoat can be <br /> applied.For larger joints a second coat of EnvirolineTM 125U-9300 may be required to build <br /> up the thickness. <br /> 2.4.4 Plug Repairs <br /> a) Perforated areas to be repaired with boiler plugs and/or hydraulic cement must be <br /> abrasive blasted to white metal at least twelve (12) inches in all directions. Hydraulic <br /> cement must not overlap the perforations by more than two (2) inches,nor protrude from <br /> the interior tank surface by more than two (2) inches. <br /> b) Cover boiler plug(s) and hydraulic cement with EnvirolineTM 124 patching compound and <br /> silane-treated fiberglass cloth having a minimum weight of four (4) ounces per foot.The <br /> fiberglass cloth and patching compound must overlap on all edges of the boiler plugs) by <br /> a minimum of five (5) inches in all directions. Work the patching compound into the <br /> fiberglass cloth to free any entrapped air. <br /> 2.4.5 Recoatability and Relining-when relining a tank previously lined with IECC products or to reline <br /> an area of a tank that does not meet minimum thickness or has pinholes or voids,brush blast or grind the <br /> affected area to obtain a suitable anchor profile or pattern.Clean to remove any dust or debris prior to re- <br /> coating.Either spray apply or trowel the lining material or patching compound,depending upon the size <br /> of the affected area, to obtain the proper thickness or to cover any discontinuities. Consult IECC for <br /> additional information. <br /> 2.5 EnvirolineTM 1250 and 12511-9300 Product Information <br /> 2.5.1 EnvirolineTM 1250 meets and exceeds all coating specifications cited in American Petroleum <br /> Institute Standard, RP 1631,Section 1.3. <br /> Material 100% solids epoxy novolac resin with proprietary curing agents. <br /> Two-component system: Resin and Activator. <br /> Recommended Thickness 100 mils minimum, 125 mils nominal. <br /> Mixing Procedure Preheat activator and resin to 95-105°F before mixing. <br /> Mechanically pre-mix each component one minute. Then mix <br /> the two (2) gallon pail of activator into the five (5) gallon pail of <br /> resin. The combined mixture equals approximately 4 gallons, or <br /> one (1) unit. <br /> Viscosity Thixotropic <br /> Pot Life 10 minutes at 100°F <br /> Color Green, White <br /> Coverage When ordering product, make allowances for any loss due to <br /> overspray,surface irregularities, etc. (approx. 15-20%) <br /> At 100 mils, 16 square feet per gallon <br /> 2/99 <br /> Page 10 of 30 <br />