substitution request - Alliance Construction Solutions

C. Leak Sensors: Each leak sensor shall contain a 316 stainless steel capacitance element
bonded to a combination PVC/Epoxy Housing, and a PVC jacketed cable for electrical
connections. The sensor shall pass through a minimum 2 inch NPT monitor fitting on each
tank. The sensor shall be able to differentiate between liquid water and liquid hydrocarbon
to a minimum depth of 0.1 inch and operate from -40° to 130°F and up to 50
PSIG. Wiring to the console shall be standard 3 conductor (shielded not required) ,
provided by others and terminated at the tank monitor fitting using watertight 1/2 inch
NPT fittings.
D. Leak detection shall be as follows:
1. Control Unit(s) shall be Pneumercator model number LDE90OX. X = number of
sensing points.
2. Leak sensors shall be Pneumercator model 9-901 for fiberglass tank annular
spaces, or model 9-902 for steel tank monitor pipes and piping sump areas.
2.14 OVERFILL ALARM SYSTEM:
A. Provide a complete operational working audible and visual alarm system for overfill
condition.
B. The system shell include the following construction features and performance.
PART 3 – EXECUTION
3.01 INSPECTION:
1. NEMA 4 painted steel enclosure
2. Suitable operating temperature range of -40°F to 150°F
3. 120v/1Phase
4. Audible alarm 78dB to 103 dB at 10 feet distance, with adjustable duration time
on from 0 to 60 seconds.
5. Visual alarm using a 25 watt 120 VAC lamp with red polycarbonate lens and a
flashing rate of 75 per minute.
6. Alarm acknowledgment switch with actuating lamp.
7. Programmable overfill alarm limit set for each tank.
8. Auxiliary contacts compatible with building automation system for remote
monitoring.
A. General: Examine areas and conditions under which fuel oil systems materials and
products are to be installed. Do not proceed with work until unsatisfactory conditions have
been corrected in manner acceptable to Installer.
3.02 INSTALLATION OF BASIC IDENTIFICATION:
A. General: Install mechanical identification in accordance with Division 23 Basic
Mechanical Materials and Methods section “Mechanical Identification.”
Project No.: 10145
550 15 th Street Dual Brand Hotel
03/16/2012
23 1113 - 8 FACILITY FUEL-OIL PIPING