So far, approximately 20 states have incorporated the language, which states that every pool should have either an ASME-approved safety vacuum release system or an "approved" gravity drainage system
. At this time, however, no such gravity drainage system
exists, according to IAF President/CEO Carvin DiGiovanni.
The THAI technology offers a number of advantages over the current steam-assisted gravity drainage system
for heavy oil recovery, including 70 to 80 percent higher potential resource recovery, lower production and capital costs, minimal usage of natural gas and fresh water, the possibility of a partially upgraded crude oil product and significantly lower greenhouse emissions.
The end of the existing gravity drainage system
is at Bailey Lake in Woodbury.
must also be equipped with one or more of the following anti-entrapment device or systems: safety vacuum release system; suction limiting vent system; gravity drainage system
: automatic pump shut off system: drain disablement or other systems determined to be as effective as the above.
Currently, a section found in Appendix G of the International Code Council's 2003 code states that every pool should have either an ASME-approved safety vacuum release system or an "approved" gravity drainage system
Even without the state-of-the-art computerized support system installed for the Atlanta Braves, this pipe works as an efficient gravity drainage system
, both flat, and on end, that will permit water to drain quickly."
Additionally, any pool with a single main drain, other than an unblockable drain, must be equipped with one or more of the following anti-entrapment devices or systems: safety vacuum release system; suction-limiting vent system; gravity drainage system
; automatic pump shut-off system; drain disablement; or other systems determined to be as effective as those stated.
During a preliminary planning phase to find the most desirable alternative, the city and its consulting engineer, Parkhill, Smith & Cooper, Inc., concluded that a gravity drainage system
had already proven inadequate and that the system would have to include both gravity storm drain systems and stormwater pumping.
* Development of two gravity drainage systems
on the airfield to improve removal of water in case of flooding.