Department of the Interior, U.S. Geological Survey, 345 Middlefield Road,Mail Stop 285, Menlo Park, CA 94025-3591

J -- MAINTENANCE, INSTALLATION AND REPAIR OF PERMANENT ACCELEROGRAPH NETWORK SOL RFP 98WRSS1007 DUE 092198 POC Rita A. Leach, (650) 329-4162 E-MAIL: Click here to contact the contracting officer via, rleach@usgs.gov. The United States Geological Survey (USGS) has a requirement for technical support services to assist in installation, operation, maintenance, repair, and support of the USGS National Strong-Motion Program's (NSMP) permanent accelerograph network. The Contractor shall provide support personnel to assist USGS network technicians in the installation and maintenance of strong-motion accelerograph systems located both at free-field ground sites and in various types of engineered structures. The NSMP permanent network presently contains nearly 900 accelerographs at about 500 permanent stations located in 33 states and the Caribbean. Approximately 75 percent of network instrumentation comprises analog recorders; ground stations generally contain Kinemetrics, Inc., optical-mechanical model SMA-1 recorders with internal triaxial force-balance accelerometers. Time is typically provided by either an internal clock or WWVB radio receiver; accelerations are recorded on 70mm photographic film. These battery-operated recorders remain in a standby mode until triggered by significant ground motion. Analog structural instrumentation is similar but contains multiple (typically 12 or more) sensors located throughout the structure, which are hard wired to a single film recorder at a remote location. There are approximately 150 digital ground and structure stations in the permanent strong-motion network, located primarily in California, Hawaii, Puerto Rico, and the Pacific northwest. Instrumentation is similar to the analog but records in solid state or flash-card memory rather than on film; operates in a triggered mode but contains a pre-event memory; and provides timing via a GPS receiver. Ground stations may contain 3-6 channels; structure stations may contain 12-72 remote channels. An ongoing project intended to convert the entire NSMP network from analog to digital over the next 10-15 year period will gradually reduce the number of analog film recorders at permanent strong-motion stations. Contractor personnel will travelwithin the continental United States, Alaska, Hawaii, and the Caribbean. The USGS will provide suitable vehicles. Primary duty station will be the USGS office in Fresno, CA. USGS will provide electronics test equipment and data analysis tools appropriate for the systems being maintained. Anticipated contract term is one year, plus four one-year option periods. A single contract is planned. The Government intends to award a contingency contract subject to the availability of funds. Complete RFP is available from the contracting officer. All responsible firms may submit an offer which will be considered. See Note 26. Posted 08/03/98 (W-SN231866). (0215)

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