NCCER Insulator case studies
NCCER Insulator · Put your knowledge to work in context.
The Aislador Industrial (Industrial Insulator) Journey Level assessment is an NCCER journey-level assessment offered in Spanish under NCCER's National Craft Assessment and Certification Program (NCACP). NCCER describes NCACP as a way to assess both the skills and knowledge of current craft professionals against industry standards. The NCCER Insulator case studies are 5 cases and about 2,274 words.
1650°F Steam Header Material and Expansion Detailing
At a refinery utility area, a 12 in carbon steel steam header operates at 650°F and 600 psig. The line runs 180 ft outdoors between anchors, with two expansion loops and several shoes on sliding supports.
556 words, about 3 min2Infrared Survey Anomalies on an 8 in Steam Condensate Line
A 300 ft, 8 in steam condensate line is insulated with 2 in mineral wool and aluminum jacketing; normal operating temperature is 350°F. During an infrared survey on a clear, calm day at 85°F ambient and 10 mph wind, the thermographer sees a 20°F temperature rise at two pipe hangers and a bright spot at a flange.
448 words, about 2 min3Chilled-Water Condensation and Vapor-Barrier Repair
A 6 in chilled-water line at 40°F runs 120 ft indoors through a pump room held at 80°F and 80% relative humidity in summer. The pipe is currently insulated with 1 in flexible elastomeric foam; seams are wrapped with ordinary duct tape, and the jacket is open at three valves and at the wall penetration.
447 words, about 2 min4Installed Thickness and Jacketing Audit on 40 Spools
An insulation contractor has completed 40 spools of 10 in carbon steel pipe at a food plant. The specification calls for 2.5 in mineral wool with a factory-applied ASJ jacket, bands at 12 in centers, and 2 in jacket overlaps.
401 words, about 2 min5Personnel-Protection Surface Temperature on a Walkway Steam Line
A 6 in, 450°F steam line crosses an operator walkway at 6 ft 8 in above the floor. The line has 2 in mineral wool with aluminum jacket.
422 words, about 2 min