SOLICITATION NOTICE
20 -- Acoustic Release
- Notice Date
- 1/30/2007
- Notice Type
- Solicitation Notice
- NAICS
- 541990
— All Other Professional, Scientific, and Technical Services
- Contracting Office
- Department of Commerce, National Oceanic and Atmospheric Administration (NOAA), National Data Buoy Center, National Data Buoy Center Building 1100, Room 360F, Stennis Space Center, MS, 39529-6000, UNITED STATES
- ZIP Code
- 00000
- Solicitation Number
- Reference-Number-NWWG9502-7-05773
- Response Due
- 2/9/2007
- Archive Date
- 2/24/2007
- Description
- NDBC STANDARD SPECIFICATION FOR PROCUREMENT OF ACOUSTIC RELEASE 1.0 SCOPE 1.1 PURPOSE This specification contains the requirements for procuring an Acoustic Release including the compatibility requirement that the release must operate with the deck sets that are currently used for communicating with existing releases. These releases are presently used extensively for the DART program and will soon be used in a developing ocean measurement program. 1.2 APPLICABLE DOCUMENTS Any ambiguity or conflict between this specification and other applicable documents shall be resolved by the following order of precedence: a) The issued contract with any amendments or modifications b) This specification c) Other applicable documents 2.0 REQUIREMENTS 2.1 GENERAL The acoustic release requirements and deck set compatibility requirements are covered separately below. In order to preserve operational flexibility it is critical that the acoustic release and deck set are 100% compatible with each other and with existing NDBC inventory. 2.2 ACOUSTIC RELEASE 2.2.1 MECHANICAL The entire acoustic release shall be comprised of single pressure housing with no external cables. The pressure housing shall act as the in-line load bearing member with a minimum working load of 10,000 lbs. The release shall not self-release under loading until at least 12,000 lbs of force are applied. The depth rating of the pressure vessel shall be at a minimum 6000m. The overall length of the instrument shall not exceed 40? and shall not weigh more than 65 lbs in salt water. Preference will be given to a design that allows easy maintenance and battery exchange. All external features for the housing including hardware/fittings shall be corrosion resistant or adequately protected from corrosion with cathodic protection for a minimum of a 3 year deployment. All external dissimilar metals shall be completely isolated from each another. Preference will be given to external hardware that is corrosion free. The release?s bottom flange must have a four bolt pattern on a 6.00 BCD sized for isolated 3/8? screws in order to ensure compatibility with existing equipment. The upper attachment point of the release shall, at a minimum, be able to be connected to an isolated 5/8? Safety Anchor Shackle (Galvanized). 2.2.2 ACOUSTICS/ELECTRONICS The instrument shall have a working range of at least 10 km and respond to interrogate frequencies in the range of 9-11 kHz (as ordered). The release must be able to reply within the 7.5-15 kHz range and be adjustable in 500 Hz increments. The transducer shall have a receive sensitivity of at least 80 dB re 1 micro Pa and provide a minimum reply source of 190 dB re 1 micro Pa at 1m. The minimum pulse widths for interrogation and reply are 5 ms and 10 ms respectively. The minimum turnaround response between interrogation and response shall be 13 ms. The instrument shall respond to the following minimum commands; Enable, Disable, Release, each with a confirmation response from the instrument via a time ping-rate output. The release shall be 100% compatible with the ORE (Edgetech) 8011A & 8011M Acoustic Command Deck Sets. The Release command?s ping-rate shall be audibly (operator discernable) different from the other two commands. Each release shall have an original and unique release code. The acoustic release shall be equipped with a tilt sensor with a range of +/- 25 deg (Accuracy: +/- 5 deg) and be able to provide this information to the user during interrogation. 2.2.3 POWER/BATTERIES The release shall have an easily removable welded battery pack. The capacity of the battery pack shall allow the instrument to remain deployed for a minimum of 2.5 years (150,000 replies). The battery pack shall use alkaline based cells. Vendors may present options for lithium based battery packs for longer duration deployments but these will not be a substitute for the above minimum power requirement. The instrument shall be equipped with a vent/purge plug to allow the instrument to be purged upon recovery or filled with dry gas as desired. The instrument shall be designed such that battery acid from damaged cells can not make contact with any internal aluminum components (if present) in order to reduce the potential of catastrophic hydrogen build up. Battery packs shall be labeled with shelf life dates and dates of manufacture. The vendor shall provide a quote of replacement battery packs in quantities of 1, 5, 10 and 20. 2.3 DECK SET COMPATIBILITY The Acoustic Release must operate with the ORE (Edgetech) Models 8011A & 8011M Acoustic Command Deck Sets currently in use by the NDBC. 3.0 QUALITY ASSURANCE AND DELIVERABLES 3.1 QUALITY ASSURANCE/TESTING The vendor shall perform and provide proof of the following two tests (for the Acoustic Release) with results prior to delivery: a) Pressure Test: The vendor shall perform a pressure test on all Acoustic Releases to the full extent of this specification. In the event of a failure the vendor is allowed one opportunity to replace o-rings and repeat the test. Units failing this second test will not be accepted. The instrument must be held at the specified pressure for a minimum of 1 hour. b) Load Test: The vendor shall perform an in-line load test on the Acoustic Release to ensure that the instrument meets the working load criteria in the test. The instrument shall be loaded to the working load and held under load for a minimum of 5 minutes. This test shall be performed on 20% of the delivered instruments at a minimum. 3.2 TESTIMONIAL QUALITY ASSURANCE Prior to award the contractor shall provide NDBC with letters of recommendation from 4 contracts with details including number and type of units, along with contact information for the users. It is preferred to have these testimonials in applications similar to that of NDBC?s long term deployment (>2 years) in deep water (5000m). 3.3 DELIVERABLES The following items shall be provided at a minimum for each Acoustic Release that is purchased: a) Instrument including fresh internal Batteries (minimum remaining shelf life of 4 yrs) b) User Manual c) Service Kit (including at a minimum replacement seals and hardware along with necessary assembly tools) d) Ruggedized shipping container for marine applications for items a-c
- Record
- SN01221769-W 20070201/070130220217 (fbodaily.com)
- Source
-
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