International Procurement Office, Nippon Telegraph and Telephone Corporation, 1-6, Uchisaiwai-cho 1-chome Chiyoda-ku, Tokyo 100, Japan

58 -- JAPAN: SODIUM-SULFUR (NAS) BATTERY SYSTEM SOL IPO.07-436 DUE 012696. POC NTT America, Inc., Head Office, 101 Park Avenue, 41st Floor, New York, NY 10178, 212/661-0810 also NTT America, Inc., Pacific and Western Division, 800 El Camino Real West, Suite 103 Mountain View, CA 94040, 415/940-6565. This public notice is to request suppliers to provide NTT with general referential information on similar products or technology prior to procurement of the intended product (mentioned below) by NTT. This public notice is also to request that any suppliers wishing to participate as a subcontractor in the procurement program of this product should declare their intentions to that effect. This public notice is not intended to guarantee public notification of procurement of the product. (I) Name: Sodium-Sulfur (NaS) Battery System (II) Overview: The Sodium-Sulfur (NaS) Battery uses sodium (Na) as the negative active material and sulfur (S) as the positive active material. The battery will be used for energy storage. This system is composed of the battery-unit and control-unit. (III) Contents of RFI: NTT is inviting the following types of information on a product or technology similar to the above-mentioned system. Once information is offered, these are regarded as non secret one, and it is possible that these information is opened to the public in procurement or used by others. NTT is not responsible for controlling, opening and using of the information. (1) Technical information: Capacities and extension unit (including cell capacity and module capacities), Electrical Characteristics: rated capacity (16HR, 8HR, 4HR), cut-off voltage of discharge, charging voltage, charging and discharging characteristics, energy density (kWh/m3, kWh/kg), overcharge characteristics, overdischarge characteristics, energy density (kWh/m3,kWh/kg), overcharge characteristics, overdischarge characteristics and overload characteristics, etc., Battery construction: appearance, outside dimension, weight, materials of container and active, construction of terminals, and safety design and concept of cell and module, Environment and installation: environmental conditions temperature, humidity, operating temperature, installation and method, structure of assembled battery earthquake resistance, etc., Supervision control functions: measure and operation during the system failure, contents of supervision, and control and remote control, Durability: charge and discharge cycle, freeze and thaw cycle, lifetime during operation and its definition and judgment method, Accessories supplied. (2) Prices: System price, (3) Standard time of delivery after ordering, (4) Sales records, (5) Other: Trouble shooting system and maintenance support system, Active proposals that will be of interest to NTT, The cost for NaS battery disposal and NaS battery recycle system (IV) Request for Declaration of the Intention of Participating as a Subcontractor: Any suppliers wishing to participate as a subcontractor in the product procurement program of NTT, are requested to supply NTT with the information listed below. After preparing a list of supplied information, NTT will provide the list to suppliers who wish to be provided with it, to those who have responded to the request for supply of the information listed and to those who have responded to the request for supply of the information listed and to those who have purchased the PROCUREMENT DOCUMENTATION relating to procurement of the product. NTT, however, will undertake no responsibilities for any outcomes arising from supply of the list, (i) Name of supplier, (ii) Place of contact (Address, name of the person in charge, telephone number, and facsimile number). (5) Deadline of submission of materials and comments: 3:00 PM, January 26, 1996 (Mail must arrive no later than the above date). (6) Language: Japanese or English. (362)

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