NCCER Pipeline Ops case studies
NCCER Pipeline Ops · Put your knowledge to work in context.
NCCER Pipeline Operations is a craft title within the NCCER programs and crafts catalog, delivered through NCCER's accredited training and assessment network rather than by a single centralized exam sitting. NCCER describes itself as "the nation's leader in providing construction industry education, assessments, credentials and accreditation," and its programs are "Built for industry by industry." The credential is aimed at craft professionals working in pipeline construction and maintenance, and at learners moving through high school, postsecondary, apprenticeship, or contractor workforce-development pathways who need documented pipeline operations training. The NCCER Pipeline Ops case studies are 5 cases and about 2,662 words.
1Stuck Pig on a Waxy Crude Line
At 14:20, a 12-inch, 48-mile crude oil line is launching a brush pig at 900 bbl/h. MAOP is 1,200 psig; the variable-speed pump discharge limit is 950 psig.
561 words, about 3 min2Products Line Imbalance During a Batch Interface
A 16-inch refined-products line, 85 miles long, is moving 3,200 bbl/h of diesel with a gasoline batch interface near milepost 41. Over 45 minutes, SCADA's volume balance shows 3,200 bbl/h in and 2,980 bbl/h out.
522 words, about 3 min3Marginal Cathodic Protection Before a Planned Excavation
A 20-inch natural gas transmission line has a 3,000-foot section where close-interval survey reads -0.72 to -0.78 V CSE. The rectifier serving the section was at 18 A and 24 V; last week its output fell to 12 A after a transformer tap change.
532 words, about 3 min4Hydrostatic Test Pressure Drop and High-Point Pressure
An 8-inch, 3.2-mile new gas gathering line has MAOP 1,480 psig. The hydrostatic test is held at 1,850 psig using water from a nearby pond.
538 words, about 3 min5Block Valve Fails to Prove Closure Near a School
A 12-inch NGL line is running at 1,100 bbl/h. At 02:10, the controller commands remote closure of block valve MV-33 at milepost 33 after a downstream pressure alarm.
509 words, about 3 min