N045--Boiler 3 Oxygen Analyzer and Steam Flow Meter

Description

Questions and Answers 36C24727Q0050 Boiler #3 Oxygen Analyzer and Steam Flow Meter RFI Responses Where should the output signals from the new steam flow meter and O2 analyzer terminate? For example, the existing building automation system (BAS), the existing Boiler 3 burner/boiler controls, or a local display only. Burner 3 boiler/burner controls where applicable and local display. Does the government require active O2 trim control to the burner fuel/air ratio, or monitoring and display of the O2 only? Oxygen analyzer must send signals/information to combustion controls to control trim. What is the material of construction for the stack? Is it single or double wall? Stack is double walled. Inside material is steel; outside material is galvanized steel. Stack is 36 D Selkirk Metalbestos Model P.S. Current operating pressure and temperature of the system for boiler #3? Design pressure is 200 psi. Typical operating pressure is 82 psi. Typical operating temperature is about 330 degrees Fahrenheit. What are the available outputs on the physical steam flow meter (e.g., 4-20 mA, Modbus RTU, BACnet MS/TP)? 4-20 mA analog. Is the flow meter wired directly into an analog terminal block on the CB Hawk, or is it wired directly to the facility s Building Automation System (BMS)? Steam flow meter is wired into local CB Hawk analog terminal block. Please provide nameplates for the existing oxygen analyzer and steam flow meter. Oxygen analyzer nameplate: Steam flow meter nameplate:

Key facts

Reference

36C24727Q0050

Procedure

Combined Synopsis/Solicitation

Contact

Sheryl Harris

sheryl.harris5@va.gov

email only