PEI Class 7 Test case studies
PEI Class 7 Test · Put your knowledge to work in context.
The PEI Class 7 credential is one of the Petroleum Equipment Institute's installation and service certifications for people who work on fueling systems and their containment components. It is aimed at technicians, installers, and inspectors whose job involves sumps, spill buckets, and the piping and tank connections that feed them, and at the contractors who supervise that work. The PEI Class 7 Test case studies are 5 cases and about 3,947 words.
1Rain, Sheen, and a Missing Fill Cap at a Two-Tank Retail Site
A technician responds to a 12-year-old retail fueling site with two 10,000-gallon double-wall tanks, one turbine (STP) sump per tank, two dispenser sumps, and a spill bucket at each fill. It rained heavily for five days.
870 words, about 4 min2Four Months of Shortages on a Tank That Keeps Passing Its Test
A 20,000-gallon single-wall steel tank installed in 1998 is equipped with an ATG that has 0.1 gph monthly monitoring capability and a current annual certification, plus a single-wall flexible product line with a mechanical line leak detector at the dispenser that passes its annual 3 gph test. Monthly throughput is about 60,000 gallons.
791 words, about 4 min3A Test Boot, a Hump, and a Sensor in the Wrong Sump
A site is upgrading a 60-foot tank-to-dispenser run. The contractor installs 2-inch flexible double-wall piping in a sump-to-sump secondary containment arrangement: the primary pipe carries product, the annular space is monitored by one liquid sensor installed in the tank sump, and the interstitial space is intended to be open from the tank sump to each dispenser sump.
778 words, about 4 min4The Overfill That Went Out the Vent
A 10,000-gallon gasoline tank installed in 1994 has coaxial Stage I vapor recovery, a 5-gallon spill bucket whose drain is plugged with hardened product, and a ball-float vent valve on the 2-inch vent line as its only overfill prevention. The ATG probe rests directly on the tank bottom because no striker plate was installed, and the vent line's pressure-vacuum cap has been replaced with a plain rain cap.
768 words, about 4 min5Commissioning a New Double-Wall Site With the Sequence Backwards
A contractor is installing two 12,000-gallon double-wall fiberglass tanks with secondary-contained flexible piping and dispenser sumps. The planned sequence is: 1.
740 words, about 4 min