directly at the air/water interface. The sensor shall measure at least 3 mm
0.125 inches of oil on water. The sensor shall be UL listed and
classified for NFPA 70 Class 1, Division 1, Group C and D hazardous
location.]
[Interstitial monitoring system in secondary containment shall include
sensor probes located in the low point sump of the secondary containment
system as indicated. The collection sumps shall include the following:
a.
A lid designed to prevent surface water from draining down into
the sump.
b.
A vent which will allow any collection of vapors to escape.
c.
Sufficient strength to keep out the surrounding backfill material.
Probes shall measure at least 3 mm 0.125 inches of oil on water. Probes
shall meet NFPA 70, Class 1, Division 1, Group D hazardous location
requirements.]
[Interstitial monitoring system for the secondary containment shall include
sensing cables located in the annulus of double-wall pipes or floor of
trench. Sensing cable shall detect the presence of fuel at any point along
its length. System shall meet NFPA 70 Class 1, Division 1, Group D
hazardous location requirements.]
PART 3
EXECUTION
3.1
INSTALLATION
Contractor shall provide installation of fuel oil piping system in
accordance with applicable Federal, State, regional or local regulations.
3.1.1
Fuel Oil Piping System
Install piping in out-of-the-way locations, in a manner that will minimize
cutting of beams, girders, columns, or load-bearing members. Installation
of oil piping and equipment in buildings shall conform to NFPA 30 and NFPA
31, except as indicated or specified herein. Underground piping shall also
conform to API RP 1615.
3.1.1.1
Underground Piping
a.
Arrange piping to minimize piping across tanks.
b.
Piping shall be free from traps and shall drain toward tank.
c.
Provide swing joints at points where underground piping connects
to the tank.
[d. Install underground fuel lines in a single trench with a bed of
well-compacted non-corrosive material such as cleaned, washed sand
at least 150 mm 6 inches deep.]
[e. Trenches shall be wide enough to permit at least 150 mm 6 inches
of backfill between underground fuel lines and the sides and floor
of the trench. Provide cover of at least 150 mm 6 inches.]
SECTION 15192N
Page 22
Previous Page
