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}� PEURP1200 -17 storage system is releasing product to the outside of the 2. 22 Safety Data Sheet (SDS) . Information supplied primary containment in an uncontrolled manner. Leak by the manufacturer of chemical substance to individuals detection methods include inventory control, tank and who use or come into contact with the substance. The line testing, and interstitial monitoring . Leak detection is SDS includes information on how to use , transport and also known as "release detection . " store a chemical safely, as well as what to do in case of 2.16 Lockout/Tagout. Procedures designed to safe- emergency. guard workers from exposure to electrical hazards , the 2.23 Sensor. An electronic or mechanical device that unexpected startup of machinery, or the release of fuel can detect the presence of water, liquid product, product while equipment is being serviced. This requires, in part, vapors or a loss of pressure or vacuum in the interstitial that a designated individual turns off and isolates the space of a tank, piping, a tank-top sump, a fuel dispenser equipment from its energy source(s) before performing sump or an observation well. Sensors are available to service or maintenance. The designated individual either detect only water, only petroleum products , or to detect locks or tags the breaker(s) or valve(s) and takes steps to both water and petroleum products and differentiate verify that the equipment has been isolated effectively. between the two. 2.17 Overfill Alarm . An audible and/or visual warning 2. 24 Shear Valve . A mechanical device installed at the device that alerts a fuel delivery operator that a storage base of a fuel dispenser when the fuel supply piping oper- tank is nearly full and the delivery should be stopped, ates under pressure . The valve is designed to automati- cally shut off the flow of fuel to the dispenser in the event 2. 18 Penetration Fitting. A fitting designed to provide of a severe impact to the fuel dispenser or a fire inside a liquid-right seal around piping or conduit that passes the fuel dispenser. This device is also known as a "crash through the wall of a containment sump . valve," "impact valve" or "emergency shutoff valve." 2 . 19 Personal Protective Equipment ( PPE) . Equip- 2, 25 Spill Bucket . A liquid-tight container placed ment designed to protect workers from workplace inju- around the fill pipe or Stage I vapor recovery riser of a ries or illnesses resulting from contact with chemical , UST designed to capture small spills that might occur physical, electrical, mechanical or other workplace haz- when the delivery hose is disconnected. A spill bucket ards. Examples of PPE include safety shoes , hard hats , may contain a drain valve to drain liquids into the tank safety glasses, coveralls, gloves, high-visibility vests , or a small pump to remove liquids . Also referred to as a hearing protection and respirators . "spill catchment basin ." 2.20 Probe. An electronic measuring device installed 2,26 STP. See "Submersible Turbine Pump. " in an underground tank. Probes typically measure product level, water level and product temperature, and commu- 2. 27 Submersible Turbine Pump . A pumping unit nicate this information to an ATG console. located inside a UST designed to supply fuel to one or more fuel dispensers . The pump intake is positioned 2.21 Riser. A generic term for a vertical length of pipe approximately 4 to 6 inches from the bottom of the tank, E in an underground storage system. Risers include: g g Y where it is submerged in the fuel. A submersible turbine fill, vapor recovery, tank gauge and interstitial risers pump may also be called a "submersible pump" or an $ $ i located on the top of the tank; STP • fuel dispenser risers located beneath fuel dispensing 2.28 Test Boot. A donut- or tube-shaped device made equipment; of flexible material that can be used to seal off the inter- • vent risers that extend above grade to allow an under- stitial space in adouble-walled piping system. ViTith the ground tank to exhaust vapors or take in fresh air as test boot in place, the interstitial space of the piping can necessary to maintain the tank at or near atmospheric be isolated for integrity testing purposes . pressure. pei .org