National Institute of Standards & Technology, Acquisition & Assistance Div., Bldg. 301, Rm B117, Gaithersburg, MD 20899

44 -- IN-PILE GUIDE TUBES FOR THE COLD NEUTRON GUIDES SOL 52SBNB8C1128 POC Joan Smith (301) 975-6458 WEB: NIST Contracts Homepage, http://www.nist.gov/admin/od/contract/contract.htm. E-MAIL: NIST Contract Office, Contract@nist.gov. The U.S. Department of Commerce, National Institute of Standards and Technology (NIST), Center for Neutron Research has a requirement for the replacement of in-pile guide tubes for the cold neutron guides NG-1,2,3,4 and NG-5,6,7 located in the Reactor Building, Gaithersburg, Maryland. The in-pile guide tubes are required to be made of selected silicate glass with all faces of the guide tubes to be coated with Ni 58. Ni 58 will be supplied by NIST. Specific requirements are: (1) The guide element shall be machined and glued according the Government's specifications; (2) The guide tube shall possess a reflectivity of at least 99% (average value between zero and the critical angle). The substrate shall be polished to provide the required reflectivity; (3) The coating is required to show no degradation in performance in temperatures up to 100 degrees Centigrade; (4) The coating is required to be permanently bonded to the glass substrate with sufficient adhesion to resist removal by Scotch tape (3M brand #810). -- Quantity, One set of guide tubes -- F.O.B. Destination, Gaithersburg, Maryland -- Delivery 240 Days after contract award. -- A firm fixed price contract is anticipated. -- It is the government's intent to procure these guide tubes from Compagnie Industriele des Lasers (CILAS), Orleans, France, the only responsible source that can satisfy the agency's requirement. -- See Number Note 22 and 26. ***** Posted 08/04/98 (W-SN232422). (0216)

Loren Data Corp. http://www.ld.com (SYN# 0326 19980806\44-0001.SOL)