MODIFICATION
66 -- Exhaust Gas Analyzer
- Notice Date
- 6/12/2009
- Notice Type
- Modification/Amendment
- NAICS
- 334516
— Analytical Laboratory Instrument Manufacturing
- Contracting Office
- Department of Commerce, National Institute of Standards and Technology (NIST), Acquisition Management Division, 100 Bureau Drive, Building 301, Room B129, Mail Stop 1640, Gaithersburg, Maryland, 20899-1640
- ZIP Code
- 20899-1640
- Solicitation Number
- SB1341-09-RQ-0252
- Archive Date
- 7/9/2009
- Point of Contact
- Paula Wilkison, Phone: 301-975-8448, Patrick K Staines, Phone: (301)975-6335
- E-Mail Address
-
paula.wilkison@nist.gov, patrick.staines@nist.gov
(paula.wilkison@nist.gov, patrick.staines@nist.gov)
- Small Business Set-Aside
- N/A
- Description
- The purpose of this amendment is fourfold: 1. The response date for this solicitation is hereby extended to 3:00 p.m. on Wednesday, June 24, 2009. 2. The technical contact has offered an alternate title which may better describe the requirement: “continuous emission monitoring system” or CEM. 3. The technical contact has modified the background statement and specifications as follows: Background statement: A continuous emissions monitoring (CEM) system is sought to continually measure the concentration of six gases within the exhaust stream of micro cogeneration devices, which utilize the combustion of natural gas to create electrical and thermal energy concurrently. The instrument will be installed within 1 meter of the exhaust vent in a mechanical room directly above the test facility for the micro cogeneration devices. The mechanical room is a conditioned space with a steady temperature of approximately 25 °C. Specifications: Line Item 0001: Quantity One (1) Continuous Emission Monitoring System/Exhaust Gas Analyzer, which shall meet or exceed the following minimum specifications: 1.Exhaust gas analyzer should measure the concentration of the following gases over the range listed: a.CO2 (0 – 20%) b.CO (0 – 5000 ppm) c.NOx (0 – 1000 ppm) d.Hydrocarbons (0 – 1000 ppm) e.SOx (0 to 100 ppm) f.O2 (0-50%) 2.Measurement accuracy of exhaust gas analyzer shall be better than 2 % at a sampling time of less than 30 seconds 3.Analyzer shall include automated calibration system, if calibrations are required to maintain desired accuracy 4.Analyzer shall condition sample, when necessary, to ensure accuracy 5.Analyzer shall output concentration of above gases continually. Digital output is preferred over individual analog output. 6.Analyzer shall mount in a standard 19” instrumentation rack 7.System shall include parts and labor warranty of at least 12 months 4. Several questions have been posed by potential offerors. Below are the questions and the answers from the technical contact: Question: What are the LODs (limits of detection) required for each gas species? Answer: CO2 - 0.1%; CO - 0.5 ppm; NOx – 1 ppm; SOx – 10 ppb; Hydrocarbons – 100 ppb; Oxygen – 0.1 % Question: Can the concentrations of NO and NO2 be generated and listed separately rather than a single combined value as NOx? Answer: Yes, the constituents listed are the minimum allowable specification Question: Similarly for the Hydrocarbons, can the individual CxHy species be measured separately, or only as "total hydrocarbons as CH4"? Answer: Yes Qeustion: What will be the temperature and pressure ranges of the sampled gases in the exhaust gas stream? And what will be the flowrate of the exhaust gas stream? Answer: The facility will be used to test many different micro-cogeneration systems, and the temperature, pressure, and flow rate will vary between systems. Typically, the temperature of the exhaust is between 50 °C and 90 °C. The exhaust is normally not pressurized, and it can be assumed to be at atmospheric pressure. The flow rate could vary between 20 CFM and 100 CFM. Question: Please explain what is at the other end of the 8-meter sample pipe run, and what space of equipment is located within that 8-meter distance. Answer: We have just received permission to locate the analyzer in the mechanical space above the laboratory, which allows the analyzer to be installed less than 1 meter from the exhaust stack. The mechanical space is maintained at a temperature of approximately 22 - 25 °C. Question: Will the large environmental chamber be kept at a constant temperature during operation and measurement or will it vary during the course of operation of the cogeneration device? Answer: The analyzer will be installed in a mechanical space (see answer above) that maintains a constant temperature Question: What are the environmental conditions OUTSIDE the chamber where the actual equipment would be located if it cannot operate in the range of temperatures given inside the chamber? Is it a relatively stable environment? Ideally it would stay between 40-80*F.. Answer: We have just received permission to locate the analyzer in the mechanical space above the laboratory, which allows the analyzer to be installed less than 1 meter from the exhaust stack. The mechanical space is maintained at a temperature of approximately 22 - 25 °C. Question: Instrument technology-do you have any other requirement besides the 2% accuracy? Normally a spec like this will reference an EPA performance specification or applicable regulation.. Answer: The intended application of the exhaust gas analyzer is not a regulated activity, and it does not fall under the purview of the EPA performance specifications, necessarily. All other terms and conditions of the original solicitation are unchanged and remain in full effect.
- Web Link
-
FBO.gov Permalink
(https://www.fbo.gov/spg/DOC/NIST/AcAsD/SB1341-09-RQ-0252/listing.html)
- Place of Performance
- Address: 100 Bureau Drive, Mail Stop 1640, Gaithersburg, Maryland, 20899, United States
- Zip Code: 20899
- Zip Code: 20899
- Record
- SN01843648-W 20090614/090612235626-639a6f7430f781cf8ec789917bebb401 (fbodaily.com)
- Source
-
FedBizOpps Link to This Notice
(may not be valid after Archive Date)
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