COMPLIANCE INFO_2012-2017 - Laserfiche WebLink

Home Browse Search

EPDXY WINTER WARNING FOR COLD WEATHER AT 50°F DEGREES OR LESS: OBSERVE AND FOLLOW THE WARNINGS BELOW NOTE: THESE GUIDELINES ARE NOT FOR BRAVO'S LAMINATING RESIN Bravo bonding epoxies and epoxy -based slurries require a specific temperature range to properly cure and result in the best bond strength. In lower temperatures, you must apply and maintain adequate heat per the supplied cure chart to both the epoxy materials, containment sumps and entry fittings (if Bravo fiberglass type) to allow a full cure time. Failing to keep all bonding surfaces clean of contamination or failure to allow a full cure time may cause the epoxy bond to fail. In the case with Bravo Epoxy, there is no danger in applying it thick or heavy. The generous amount of epoxy required to gap -fill voids inherent in Retrofit entry fittings, or in the case of Epoxy Slurry pour joints on containment sumps such as the B-7000 or B-407 series there is very little loss of bond strength when our epoxy is applied or poured as a thick mass or volume. Follow safety regulations and procedures including using intrinsically safe non -sparking devices and equipment. Clean work areas of fuel and flammable materials, wear required PPE (Personal Protective Equipment) ventilate fumes and monitor LEL levels in confined spaces. Ambient Temp. (F°) Work Time I Cure Time LESS THAN 600 WARM EPDXY TO 700 60°F (16°c) 45 min 6 hours 70°F (210e) 30 min 3 hours 80°F (270c) 25 min 2.5 hours 90°F (320c) 15 min 2 hours MORE THAN 9(° . Follow these guidelines during cold weather to successfully bond your Bravo products: A) Pre -heating components in cold weather is critical, Heat soak the following components accordingly and devise a safe way to maintain an ambient temperature per the cure chart above: > Pre -heat the sump wall to no more than —150°F > Pre -heat each Bravo fiberglass fitting thoroughly to —150°F > Pre -heat the epoxy or EP -slurry to —80°F. DO NOT HEAT THE CATALYST!! B) Do not adjust, move, shift or otherwise disturb the sump, fittings or piping while it cures. C) You must ensure a full temperature/time cure before testing your Bravo products. Refer to the cure chart on your epoxy container. D) You can test the hardness of the cured epoxy by pressing a blunt instrument into the surface, such as a ball point pen or screwdriver. It should not be soft or indent if it is fully cured. The methods used to initially heat containment sumps, fiberglass entry fittings, piping, epoxy materials and also maintain such heat are up to the installing contractor. Common tools and techniques are permitted by Bravo as long as they do not create a safety concern or violate any worker safety or environmental regulations. If heat is applied to a sump interior, it must be loosely capped so the heat can be properly maintained. If heat packs or blankets must be used, they should be insulated against contact with the ambient air whether there is a wind or not.