DOCUMENT

ITB - Hydrocarbon Continuous Emission Monitoring System 2005

  • YEAR CREATED: 2005
  • ENTITY TYPE: City/Township
  • TYPE OF DOCUMENT: BID - ITB, IFB, ITT, RFB
This document provides specifications for a Continuous Emissions Monitoring (CEM) system to be installed in the Incinerator Building at the Post Point Treatment Plant. The CEM system is required to have a 4-20mA isolated analog output and a detection limit of 100 ppb. It should also have less than 1% zero/span drift per week. The document specifies that the CEM system should have an auto-rangefinder that can automatically change the Total Hydrocarbon (THC) span range based on the THC concentration. It also mentions the need for a zero air generator that will be fed from the Plant's instrument air system. The enclosure for the CEM system should be a NEMA 12, two-door, dual-access, freestanding, all-metal cabinet. It should be installed in an interior location and have room for service in both the front and back. The enclosure should be made of ten-gauge steel construction with an ANSI 61 Polyester powder paint finish. It should also have appropriate UL panel listing and comply with all local, state, and national electrical codes. The document specifies that a closed-loop air conditioner with coated coils should be used to maintain the internal temperature of the cabinet. It should include a washable, reusable air filter to filter out dust-sized particles. A complete 208 Volt/3 Phase power panel should be attached to the CEM system enclosure to accept a plant-supplied power feed. The power panel should have the necessary amperage requirements determined by the equipment provider. The wiring and connections on the load side of the main breaker within the power panel should be the responsibility of the equipment provider, while the City of Bellingham will be responsible for bringing power from its source to the line side of the main breaker. The CEM enclosures are to be mounted in the basement of the Incinerator Building, and the City of Bellingham will be responsible for rigging the enclosures into the basement and setting them on the housekeeping pad. The enclosures should be mounted on a 3" concrete housekeeping pad provided by the City of Bellingham. The City of Bellingham will be responsible for the supply and calibration gas bottle acquisition, as well as the tubing acquisition and installation between the gas bottles and the enclosure. They will also provide instrument air (90psi) to the enclosure, while the CEMS provider will be responsible for all necessary air regulators, traps, dryers, controllers, solenoids, shutoffs, and zero air generators. The document also mentions the requirement for a Data Acquisition and Reporting System (DARS) software program that will acquire, display, store, and report data to meet regulatory requirements. The software program should be compatible with Microsoft Operating Systems and communicate with the CEM systems via an Ethernet TCP/IP communication link. The software program should provide real-time data display, annunciate/display system alarms and excess emission alarms and warnings. It should store data in a database, including alarms, excess emissions, and CEMS downtimes. The software should also have predefined reports for hourly, daily, monthly, and quarterly emissions and facility reports, as well as calibration reports and system uptime reports. It should also provide graphical trending of real-time and historical data. In addition to the previously mentioned specifications, the document now includes the requirement for 1-minute data acquisition, historical 1-hour data storage, and historical calibration results for both zero and span. This means that the Data Acquisition and Reporting System (DARS) software program should be capable of capturing and storing data at a 1-minute interval, as well as providing access to historical 1-hour data and calibration results for zero and span.
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