NCCER Hydroblasting case studies
NCCER Hydroblasting · Put your knowledge to work in context.
The NCCER Hydroblasting assessment is one of the journey-level craft assessments offered through NCCER, the National Center for Construction Education & Research. NCCER describes itself as "an independent 501(c)(3) nonprofit educational foundation" created in 1996, and its site reports 26.2M+ successful training completions, 1,105 accredited organizations, 1,489 accredited training and assessment programs, and 5,642 points of delivery for NCCER training and assessments. Candidates typically encounter this assessment through an NCCER-accredited training sponsor, such as a contractor, community college, or union program, rather than by registering directly with NCCER. The assessment samples the knowledge a hydroblasting technician needs on the job: hazard recognition and safety controls, pumps, hoses, lances, nozzles and accessory equipment, operating procedures and permit-driven job setup, surface preparation and cleaning applications, plus inspection, maintenance, and troubleshooting of equipment. The NCCER Hydroblasting case studies are 5 cases and about 3,281 words.
1Hand Lance in a Contaminated Pit
At a refinery during a turnaround, a two-person crew is assigned to remove scale from the shell side of a horizontal heat exchanger with a 15,000 psi hand lance. The exchanger sits in a concrete pit 8 ft deep with a fixed ladder.
795 words, about 4 min2Pressure Loss on a 300-ft Run
A three-plunger positive-displacement pump rated 20,000 psi and 10 gpm at 400 rpm is set up to clean a 12-in. The crew assembled 300 ft of 3/8-in.
647 words, about 3 min3Nozzle Stalled at a Bend
A municipal crew is jetting a 400-ft run of 24-in. storm drain that carries grease and roots.
622 words, about 3 min4White Metal on a Concrete Floor
A contractor must remove a failing epoxy coating from 4,000 sq ft of concrete floor in a food-processing plant. The specification says 'white metal blast,' but the substrate is concrete.
585 words, about 3 min5Blister on a 20K Hose
During pre-job inspection, a crew lays out six 20,000 psi hoses. Hose A has a 1/8-in.
632 words, about 3 min