National Cancer Institute, Research Contracts Branch, PSAS, 6120 Executive Blvd, EPS/Room 638, Bethesda, MD 20892-7227

66 -- LINEAR ACCELERATOR SYSTEM SOL NCI-RFQ-00167-NV DUE 081400 POC Debbie Moore, Purchasing Agent & Todd Cole, Contracting Officer RFQ-NCI-90098-NV for a "Linear Accelerator System," which was issued as a combined synopsis/solicitation in the Commerce Business Daily (CBDNet) on July 14, 2000 is amended in order to answer the following questions from potential offerors: QUESTION 1: Is there a person to contact with regard to site information and technical clarification issues. ANSWER 1: All questions concerning the site should be put in writing to the Contracting Officer. All questions will be answered within a few days of receipt unless they are received after the deadline for questions that is now established via this amendment (See below). QUESTION 2: Are drawings of the facility available for the evaluation of room shielding (This question refers to Item #6 of the initial CBD notice)? ANSWER 2: Drawings of the facility are available upon request to the Contracting Officer. The drawings for Linear Accelerator Room No. 3 at the NIH Clinical Center, the planned location for the required system, is provided. QUESTION 3: Please provide additional information on what is meant by "location costs" as identified under Item #6 of the initial CBD notice. Based on "location costs", is this meant to be a "turn key" construction project? ANSWER 3: No construction (to redesign and renovate) within the space is envisioned. This is a "turnkey" installation project in that the existing linear accelerator, all of its accessories, and shielding shall be removed (See TRADE-IN Section) from the location, and any new shielding and the specified system shall be installed in the provided space. QUESTION 4: Please include additional information on the Varian Clinac 20 for trade-in. Please include the serial number, photon and electron energies, and age of wave guide (This question refers to Item #6 of the initial CBD notice)? ANSWER 4: The Varian Clinac-20 has a serial number of #25, and it is twenty years old. It provides photon energies of 15 MV photons and 6MV LDR photons, along with 9, 12, 16, 20 MeV electrons and 6 MeV TSET electrons. QUESTION 5: Please specify the manufacturer of the existing Record and Verification Image System that is to be integrated with the new accelerator (This question refers to Option #2 of the initial CBD notice). ANSWER 5: The manufacturer is Impac Access. QUESTION 6: Please provide additional information on the requirements for "Virtual Gap Wedges." (This question refers to Item #3 under the Discretionary Enhancements Section of the initial CBD notice). ANSWER 6: Virtual Gap Wedges change the penumbra gradient from 20%/mm to 20%/cm through programmed motion of 1 collimator block. QUESTION 7: Please provide additional information on the requirements for diagnostic x-ray source and imager as this can be interpreted to be from a simple mobile x-ray unit to a CT unit integrated to the accelerator (This question refers to Item #7 under the Discretionary Enhancements Section of the initial CBD notice). ANSWER 7: The specific requirements of the x-ray source is that it shall be coaxially mounted to the gantry and oriented towards an electronic imaging system so that real-time computed tomography can be performed. QUESTION 8: Please identify all NCI treatment planning systems intended for downloading of MLC leaf patterns. Also, if other than commercially available treatment planning systems are available, please identify the output method and format. (This question refers to Option #1 of the initial CBD notice) ANSWER 8: NCI has its own locally developed treatment planning system. While NCI currently owns CMS FOCUS, a treatment planning system from the vendor may be acquired or developed. Therefore, the offeror shall provide appropriate information on constructing an interface and shall provide information on providing interfaces to selected commercial treatment planning systems. QUESTION 9: Please confirm that the accelerator must be linked to the existing Record and Verification Systems. This appears to be implied, but it is not firmly stated. Also, identify the manufacturer and model of this system. ANSWER 9: The required accelerator shall work seamlessly with the current record and verification system or the manufacturer shall supply a record and verification system that functions with all other existing equipment at NCI (e.g., accelerators and simulators). Impac Access is the manufacturer of the current system. Based on the above questions, a deadline of 3:00 PM EDT (local Washington, D.C. time) on August 3, 2000 has been established for the receipt of any additional questions. All questions received by this deadline will be answered; however, there is no guarantee that answers to questions received after the deadline will be forthcoming. Likewise, the original due date of August 3, 2000 for quotations has been extended. Quotations and all related materials must now be received in the contracting office by 3:00 PM EDT (local Washington, D.C. time) on August 14, 2000. All submitted quotations shall acknowledge receipt of this amendment. Except for the above changes and clarifications, the July 14, 2000 combined synopsis/solicitation (Submission No. 475011) remains unchanged Posted 07/28/00 (W-SN479886). (0210)

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