SOLICITATION NOTICE
44 -- Radio Frequency Oven
- Notice Date
- 8/10/2009
- Notice Type
- Presolicitation
- NAICS
- 333994
— Industrial Process Furnace and Oven Manufacturing
- Contracting Office
- Department of Agriculture, Animal and Plant Health Inspection Service, Administrative Services Division/Contracting, 100 North 6TH Street, Butler Square 5TH Floor, Minneapolis, Minnesota, 55403
- ZIP Code
- 55403
- Solicitation Number
- AG-6395-S-09-0169
- Point of Contact
- Nathan Johnson,
- E-Mail Address
-
nathan.d.johnson@aphis.usda.gov
(nathan.d.johnson@aphis.usda.gov)
- Small Business Set-Aside
- Total Small Business
- Description
- Radio Frequency Laboratory Oven 1.0 Specifications for Radio Frequency Laboratory Oven 1.1 General Description 1.1.1 Rating 15 kW continuous duty nominal power output 18 MHz operating frequency 1.1.2 Utilities 480VAC, 3 phase, 60 Hz service requirement Service to feed circuit breaker rated to trip @ 80 A. Cooling air: 600 CFM at 75F or cooler 1.1.2 Size Oven dimensions should approximate 80" long x 67" wide x 90" high. 1.2 Oven Description 1.2.1 Oven Section - Durable construction consisting of aluminum structural members and panels. - 24"x24" aluminum electrode with motorized mechanism to remotely adjust electrode to 4"-14" above the ground plane. - Electrode electrically heated to prevent condensation. - An access door on one side of oven with electrical interlock and appropriate RF gasketing. - 1700 CFM exhaust fan with VFD to remove moist air and control humidity level in the oven. Fan capacity controlled by variable frequency drive to allow precise control. 1.2.2 Generator Generator cabinet of welded construction using aluminum, steel members and panels as appropriate to provide a strong structure and lasting structure. - Air cooled power oscillator tube rated at 15kW output. - Thermal magnetic circuit breaker with handle mechanism interlocked with the door. - Automatic grid circuit control with motorized vacuum capacitor. - SCR Voltage controller for precision voltage control, programmed ramp up of high voltage and instant shutdown under fault conditions. - Silicon rectifiers connected in a three-phase full wave circuit to provide DC power to power tube. - Surge arrestors across transformer secondary windings. - 1 HP centrifugal blower to cool the power tube with 500 CFM (to be exhausted to building). 1.2.3 Control Station - Allen Bradley CompactLogix PLC controls. - Ethernet switch for connection to network or data acquisition system. - HMI touchscreen to control all RF operations and display oven operating parameters. - Plate ammeter. - Grid ammeter. - Plate KV meter. Safety circuits should be relay logic outside the PLC. 1.3 Oven Features 1.3.1 Electrode height control A positive drive controlled through the HMI screen to provide electrode adjustment from 4" to 14" between the electrode and ground plane. Electrode height to be indicated by a meter located in the HMI screen. 1.3.2 Power control system A power control system to be incorporated to allow adjustment of DC plate voltage via a SCR package controlled through the HMI screen. 1.3.3 Automatic grid control The PLC to maintain grid current at a preset level by means of a motor driven variable capacitor. This will assure optimum grid drive for peak tube efficiency regardless of fluctuation in loading. Grid capacitor setting to be displayed on the HMI panel. 1.3.4 Moisture removal system Exhaust fan to be located on top of oven to pull air from the building, through the oven, and to the exhaust port. Fan controlled by VFD to prevent moisture build up. 1.3.5 Generator cooling The generator cabinet and power tube cabinet to be cooled by filtered forced air. An airflow switch should turn off RF power if airflow is below or exceeds a preset limit. 1.3.6 Reset-recycler system To be incorporated for the protection of the power tube and other components, and also for eliminating nuisance shutdowns from occasional arcing. When a DC overload occurs, or when either the grid undercurrent or overcurrent relays function, the plate contactor de-energizes, the overload relay is reset and power can be reapplied within a matter of seconds. The PLC to keep track of overloads, and should a preset number of overloads occur in any two minute period, the system locks out, the plate contactor is de-energized and power can't be reapplied until the operator resets the system by pushing the POWER OFF button. Power is then reapplied by pushing a POWER ON button. 1.3.7 Supervisory control system All circuits that can remove power to be monitored by the PLC, which also indicates which system or systems were responsible for the shut down and displays information on the HMI screen. PLC should be Ethernet capable to allow remote access from a network and to connect to an external data acquisition system. 1.4 Certifications The completed equipment to be certified to meet all requirements of FCC Rules and Regulations, part 18, pertaining to Industrial Heating Equipment. A radiation hazard survey to be performed to ensure compliance with current IEEE/ANSI recommendations for personnel exposure to non-ionizing radiation from RF heating equipment.
- Web Link
-
FBO.gov Permalink
(https://www.fbo.gov/spg/USDA/APHIS/Contracting/AG-6395-S-09-0169/listing.html)
- Place of Performance
- Address: Buzzards Bay, Massachusetts, 02542, United States
- Zip Code: 02542
- Zip Code: 02542
- Record
- SN01905433-W 20090812/090811000500-6d8f89601d352c700c0f4b75eecd58f6 (fbodaily.com)
- Source
-
FedBizOpps Link to This Notice
(may not be valid after Archive Date)
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