SOURCES SOUGHT
Y -- MARKET SURVEY FOR STANDARDIZED MEDIUM VOLTAGE GAS-INSULATED SWITCHGEAR
- Notice Date
- 6/10/2008
- Notice Type
- Sources Sought
- Contracting Office
- Department of the Army, U.S. Army Corps of Engineers, US Army Engineer District, Mobile, US Army Engineer District, Mobile, P. O. Box 2288, 109 Saint Joseph Street (zip 36602), Mobile, AL 36628-0001
- ZIP Code
- 36628-0001
- Solicitation Number
- W91278-08-R-0065
- Response Due
- 6/24/2008
- Archive Date
- 8/23/2008
- Point of Contact
- Janis R. Steiner, 251-441-6510
- Small Business Set-Aside
- N/A
- Description
- Market survey for standardized medium voltage gas-insulated switchgear. The U.S. Army Corps of Engineers, Mobile District, is conducting a market survey to identify sources and to increase competition acquisition opportunities for Standardized Medium Voltage Gas-Insulated Switchgear. This request is only a market survey, not a request to be placed on a solicitation mailing list. It is for information only and is not a request for proposal (RFP) or announcement of a solicitation. The purpose of this Sources Sought request is to obtain information on medium voltage gas-insulated switchgear offering full compatibility and interoperability with existing the Siemens AG Type 8DA10 switchgear at Arnold Engineering Development Center (AEDC), Arnold AFB, TN. In the interest of safety and efficiency, AEDC is standardizing the medium voltage gas-insulated switchgear used throughout the installation. The use of the Siemens AG Type 8DA10 medium voltage gas-insulated switchgear is essential to the government's requirement, thereby precluding consideration of a product manufactured by another company. Commonality of the medium voltage switchgear in the plants running AEDC test cells is a must. In FY07 under a competitive procurement, Siemens was selected to install the Type 8DA10 medium voltage gas-insulated switchgear in the Engine Test Facility C Air Side Plant. Although gas-insulated switchgear provides required improvements in safety, reliability, and life-cycle cost, it can require some maintenance or repair that can only be provided by a manufacturer-trained service representative. AEDC purchased Type 8DA10 switchgear for ETF-C facility in Fiscal Year 2007 and intends to establish a service contract for that switchgear when it is placed in service. By purchasing the Type 8DA10 switchgear for TEDAC, the service contract for the ETF would also be used for the TEDAC switchgear. This would reduce costs of having service contracts with multiple manufacturers. Commonality of gas-insulated medium voltage switchgears ensures that spare parts are on-hand for emergency repair. If gas-insulated switchgear is purchased from multiple manufacturers, it will be necessary to maintain additional spare units for each switchgear type and size. Operators of the switchgear receive special training. Each manufacturer provides special tools for operating the disconnect switch and locking the mechanisms into safe configurations. There is no guarantee that the procedures for operation of switchgear made by one manufacturer will resemble the procedures of other manufacturers. Operation errors would be less likely if all the switchgear was the same and the operation procedures were the same. Modern switchgear systems are far more sophisticated than previous generations of the equipment. An example of this complication can be seen in the size of the manual for a modern multi-function protective relay. The Type 8DA10 switchgear that is being installed in ETF-C provides three multi-function relays per motor. The manual for the relay with the median amount of complication contains 706 pages. For every different type of switchgear that AEDC purchases, additional on-base technical staff will be required to troubleshoot motor operation problems. Additional test equipment and procedures will also be required. Test facility requirements change as new capabilities are added to support new test programs. AEDC must maintain configuration control of the interfaces to the switchgear and understand the equipment to ensure that it is not operated beyond its capability. Having only a single type of switchgear simplifies this task. The new switchgear shall be fully compatible with Siemens 8DA10 and shall comply with IEC 60694 and shall meet IEEE C37.20.2 except for differences related to fixed circuit breaker construction and isolated-phase bus arrangement. Safe-to-touch hermetically sealed single pole enclosure of primary conductors insulated with sulfur hexafluoride gas. Each feeder gas compartment shall be suitably divided into separate sections, which are isolated by gas-tight bushings. The division of compartments shall take into account the effects of faults within the compartments such that in the event of an internal fault, a pressure relief device operates before internal pressure exceeds the design limit of the compartment. The individual gas-sealed compartments shall be capable of being separately evacuated for inspection or maintenance, while keeping the adjacent compartments pressurized to rated pressure. Leakage of gas from switchgear enclosures shall not exceed 0.5% of the gas per compartment per year. Each gas compartment shall be provided with a pressure relief device to limit the pressure to a safe level in the event of an internal fault. The pressure relief devices shall be designed such that discharges resulting from internal faults are directed away from locations where personnel may be present. The preferred location for the bus bar pressure relief shall be such that gases are exhausted through the top of the enclosures. All pressure relief device design shall be certified by an arc fault design test in accordance with IEC 60298 standards. To isolate the circuit breaker and feeder from the system, a 3-phase, 3-position (Connected-Open-Ready-to-Ground) switch shall be utilized. The 3-postion switches shall be located in each phase of the bus compartment such that when in the disconnected or grounded position, no live parts are accessible in the interrupter compartment when the main bus is energized. Access to the 3-position switch operating mechanism shall be mechanically and electrically blocked with the circuit breaker is in the closed position to prevent misoperation. It shall not be possible to switch directly from connected ground to grounded position. A keyed selector shall prohibit simultaneous access to manual disconnect and grounding switch operators. The operating mechanism shall be maintenance free without limitation up to 10,000 operating cycles with a design life of 30,000 cycles. The vacuum interrupters shall be maintenance free up to their mechanical service life of 30,000 operating cycles. Firms interested in being considered shall provide manufacturers name, product data and written statement of compatibility. The written statement of compatibility shall include necessary backup information and support documentation. The results of this synopsis will be considered to be in effect for a period of one year from the date of publication of this notice. The government will not pay for any material provided in response to this synopsis nor return the data provided. This is not a request for offers. A determination not to compete this proposed procurement based on response to this notice is solely within the discretion of the Government. Written inquiries or comments regarding this announcement may be faxed to 251-441-6510, Attn: Liz Cotton Responses are required fourteen (14) days after publication of this notice. Responses should be addressed to: U S Army Corps of Engineers, Mobile District Attn: CESAM-CT-C/Ms. Liz Cotton P. O. Box 2288 Mobile, AL 36628-0001
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- Place of Performance
- Address: US Army Engineer District, Mobile P. O. Box 2288, 109 Saint Joseph Street (zip 36602) Mobile AL
- Zip Code: 36628-0001
- Zip Code: 36628-0001
- Record
- SN01590323-W 20080612/080610221602-312dd5d087a8eeedce798e7672d9c93f (fbodaily.com)
- Source
-
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