This notice is a combined synopsis/solicitation for commercial items prepared in accordance with the format in FAR Subpart 12.6, as supplemented with additional information included in this notice. This announcement constitutes the only solicitation; offers are being requested and a written solicitation will not be issued.
This notice is being issued as a Request for Quotations (RFQ)] for 1 Ea. Electrodynamic Vibration Test System.
Unholtz-Dickie model 2XSAI120-T2000-64-HS vibration Test System OR EQUAL.
SPECIFICATIONS FOR AN ELECTRODYNAMIC VIBRATION TEST SYSTEM
1.0 GENERAL
1.1 TYPE OF EQUIPMENT
These specifications describe an electrodynamic vibration test system (VTS) for generating vibration or mechanical shock with sinusoidal, random or transient input signal excitation. The contractor shall be responsible for the design, fabrication, system integration, functional checkout of the VTS, and provide equipment indoctrination and familiarization to local personnel.
1.2 MAJOR COMPONENTS
The following major components are required:
1.2.1 An electrodynamic shaker system rated at 25,000 pounds (111 KN) force sine, with water cooled stators and field coils
1.2.2 An air cooled power amplifier for excitation of the shaker armature
1.2.3 A direct current supply for excitation of the shaker DC Field and degauss coil
1.2.4 Shaker Cooling Blower
1.2.5 Interconnecting cables and hoses
1.2.6 Shaker water cooling unit
1.2.7 Energy conservation is an important factor in lowering operating costs of the VTS. Electrical energy consumption and loading of the air conditioning system in the test area shall be held to a minimum. Heat dissipated to air by the power amplifier shall not exceed 120,000 BTU/Hr (35 kW) at full rated performance.
1.3 UTILITIES AVAILABLE FOR THE VTS ARE:
1.3.1 Electrical: ___ V, +10%, 60 Hz, 3 phase
1.3.2 Compressed Air: 100 psig (6.9 bar), 5 scfm (8.5 m3/hr)
1.3.3 Industrial Water: 35 gpm (133 L/min), 40-80 psig (2.8-5.5 bar), 85*F
(29.4*C) maximum
2.0 SYSTEM PERFORMANCE
2.1 SINE WAVE RATINGS
2.1.1 Force output shall be at least 25,000 pounds (111 KN) force peak, continuous duty, except as limited by an acceleration of 200 g peak, a velocity of 80 in/sec, (1.78 m/sec) or a displacement of 1.7 inch (43.2 mm) peak-to-peak. Rating based on 5 min Sine Sweep 5 Hz to 2000 Hz.
Required System Sine Performance:
Test Load Peak Sine Acceleration
25 lbs (11.3 Kg) 200 to 2000 Hz 200 g
55 lbs (25 Kg) 120 to 2000 Hz 161 g
160 lbs (73 Kg) 75 to 2000 Hz 96 g
650 lbs (295 Kg) 30 to 2000 Hz 33 g
1000 lbs (454 Kg) 20 to 2000 Hz 22.5 g
2.1.2 Useable Frequency Range of 5 to 3000 Hz
2.1.3 Total Acceleration Harmonic Distortion: At system performance paragraph 2.1.1, total harmonic distortion shall not exceed 10% between 15 Hz and 2000 Hz, except at 2 narrow bands where it shall not exceed 15%.
2.1.4 Lateral Motion: At 0.5 inch (12 -1/2 mm) peak-peak displacement or 10 g (whichever is less) between 5 and 2000 Hz, the cross axis motion measured on the thrust center line parallel or perpendicular to the shaker trunnions shall not exceed 10% except at one or two points where it shall not exceed 15% of the driven axis.
2.2 SYSTEM RANDOM OUTPUT
2.2.1 Shall be at least 22,000 pounds rms, (98 KN) continuous duty, with a non- resonant mass load of 1,000 lbs (454 Kg) or greater, 20 to 2000 Hz bandwidth, uniform acceleration spectral density, and three sigma acceleration peaks.
2.2.2 Shall generate at least 160 g rms with light loads 0 to 20 lbs, (9.1 Kg) 20 to 2000 Hz bandwidth, uniform acceleration spectral density, and three sigma acceleration peaks.
2.3 SYSTEM SHOCK PERFORMANCE
2.3.1 Classical Halfsine (vendor may use optimum pre and post pulse)
2.3.1.1 11 milli-sec
100 g with payloads up to 100 lb (45.5 Kg)
45 g with payloads up to 1000 lb (455 Kg)
2.3.1.2 6 ms
170 g with payloads up to 100 lb (45.5 Kg)
100 g with payloads up to 450 lb (205 Kg)
2.3.1.3 4 ms
270 g with payloads up to 30 lb (13.6 Kg)
100 g with payloads up to 450 lb (204.5 Kg)
2.3.2 SRS
There are a wide range of SRS tests. Most tests are limited by lack of voltage at frequencies greater than 2000 Hz. For this reason the power amplifier shall allow front panel selection of a 50% boost in output voltage over that available for 80 IPS velocity sine tests.
2.4 SYSTEM NOISE
Hum and noise in the 0-5 KHz bandwidth measured at the standard monitor accelerometer location in the center of the bare table shall not exceed 0.1 g rms with full shaker field current and the input to the power amplifier shorted.
3.0 SHAKER
3.1 FORCE RATING
25,000 pounds force sine (111 KN), 22,000 pounds (98 KN) rms random
3.2 FREQUENCY RANGE
Shall be at least 2 to 3000 Hz
3.3 DISPLACEMENT
Shall be at least 2.0 inches (51 mm) between overtravel switch contacts
3.4 COOLING
Shall be accomplished by circulation of filtered deionized water for the field coils and stators. Air cooling shall be used for the armature to eliminate the need for fragile water connections to the moving armature.
3.5 ENVIRONMENTAL CONDITIONS
The shaker shall be operable at rated performance in any orientation under single or combined environmental conditions of temperature and humidity.
3.6 MOVING ARMATURE
Shall consist of a magnesium table driven by a bare single turn, solid aluminum ring with no electrical or cooling water connections. All points on all surfaces of the armature including the force generating ring shall be at ground potential for reasons of safety and reliability. Water cooling connections or current conducting connections shall not be used because of unreliability at the high accelerations of paragraphs 2.1.1 and 2.3.
3.6.1 Armature weight shall not exceed 100 lbs (45.5 Kg)
3.6.2 The armature fundamental axial resonance shall be at 2275 Hz or above with a bare table. The first diaphragming mode shall be above 2275 Hz also.
3.6.3 The armature table diameter shall be at least 17.5 inches (445 mm) with a load attach bolt circle of 16 inch (406.4 mm) diameter.
3.6.4 Specimen attachment shall be via flanged replaceable stainless steel inserts. Keenserts are not acceptable.
3.6.5 Hole pattern shall include one insert at center, 4 on 4" bolt circle, 8 on 8", 12", and 16" bolt circles.
3.6.6 Suspension stiffness shall be 2000 lbs per inch (36 Kg/mm)
3.6.7 Armature guidance shall be accomplished by damped flexures, shear mounts and one central bearing at the bottom of the armature.
3.7 VERTICAL LOAD SUPPORT
3.7.1 The armature shall be capable of supporting loads of at least 1900 lbs (862 Kg) with no need of external supports.
3.7.2 An automatic optical armature recentering system using load support air bags shall be employed to recenter the loaded armature to its mid-stroke position without operator intervention to allow full 2 inch (51 mm) displacement in the vertical direction. Shaker body motion may subtract from the table motion, depending on the mass of the load.
3.8 FIELD STRUCTURE
Shall be of double ended, center gap design for high flux density in the air gap and low stray magnetic field at the table top.
3.8.1 The stray magnetic field shall be less than 7 gauss (7 x 10 -4 TESLA )
6 inches (152 mm) above the table
3.9 SUSPENSION
3.9.1 The body suspension shall incorporate an air isolation system.
3.9.2 A method of rotating the shaker body from a vertical position through 90 shall be provided. It shall be equipped with a gear box assembly so that one person can quickly change the body position from the locked vertical position to the locked horizontal position. Provisions for locking the body in vertical or horizontal or any position in between shall be included.
3.10 PROTECTIVE DEVICES
The following protective devices, as a minimum, shall be provided and connected to the system interlocks:
SHAKER
3.10.1 Two normally closed overtravel switches
3.10.2 Normally closed stator overtemperature switches
3.10.3 Normally closed field overtemperature switch
3.10.4 Field discharge rectifier
3.10.5 Normally open air pressure switch
3.10.6 An attitude interlock switch to assure that the slip table hydraulic power supply is on when the shaker is used with a slip table.
HEAT EXCHANGER
3.10.7 Outer loop water pressure
3.10.8 Inner loop water pressure
3.10.9 Inner loop flow
3.10.10 Inner loop conductivity meter with adjustable upper limit shutdown
3.10.11 Automatic deionizer circuit
FIELD
3.10.12 Field voltage
POWER AMPLIFEIR
3.10.13 Peak current limit and rms current limit
3.10.14 Peak voltage limit
3.10.15 Front panel adjustable rms current limit to allow reducing output to 25% to protect test items.
3.10.16 Front panel adjustable rms voltage limit to allow reducing output to 25% to protect test items.
3.10.17 Amp overtemp
3.10.18 Door open
3.10.19 Slip table oil pressure
4.0 POWER SUPPLY
The power supply shall furnish variable frequency power to the shaker stator coils and front panel selectable two level DC supply to furnish excitation to the shaker field.
4.1 AMPLIFIER RATINGS
4.1.1 The SSPA shall be capable of driving the shaker to the rated system performance listed in paragraphs 2.1. through 2.3..
4.1.2 Rated output shall be at least 240 KVA.
4.1.3 Total harmonic distortion at rated shaker output bare table shall be less than:
0.5% from DC to 200 Hz
2.0% from 200 to 2000 Hz
3.0% from 2000 to 4000 Hz
4.1.4 Frequency response in the sine mode shall be +1 dB, 5 to 3000 Hz.
4.1.5 Signal Input: 2.5 V RMS or less into 10K ohms for full output
4.1.6 Efficiency: Power module conversion efficiency as defined by the ratio of 100 Hz output KVA to input KW multiplied by 100 shall be 90% or greater.
4.1.7 Hum and noise shall be greater than 60 dB below full output with shorted input.
4.1.8 Test article, amplifier and shaker protection.
4.1.8.1 Soft Start: To minimize shocking of power amplifier components, there shall be a soft start interval of 500 milliseconds between off state and application of full line voltage.
4.1.8.2 Limits: Circuitry to provide front panel adjustable limits for:
1. Overvoltage
2. Overcurrent
4.1.9 Cooling: The power amplifier shall be completely air cooled. Total heat rejected to air at full power shall not exceed 120,000 BTU/hr (35 kW). The shaker cooling system, including closed loop deionized water system and air cooling system, shall be supplied to meet specified ratings.
4.1.10 Electromagnetic Interference: Rated electromagnetic interference shall be within the limits specified for industrial devices, group 1 class A, for both radiated and conducted. A three phase AC line filter shall be supplied and mounted on the amplifier. Power amplifier console must include EMI gasketed panels and doors
4.2 FIELD SUPPLY
Shall furnish DC power to the shaker field for full shaker performance.
Front panel selection of an energy saving field connection at approximately 50% of maximum power shall be available.
4.3 LOCAL CONTROL PANEL
The amplifier control panel shall include the following switches, indicators and adjustments:
Switches, etc. Indicators
REMOTE AMP TEMP
AUTO PEAK CURR
OFF VOLT LIM
ON DOOR
READY ST OIL PRESSURE
SYSTEM POWER C.M. FAULT
OPERATE SHAKER TEMPERATURE
TEST LED SHAKER CURRENT
SHOCK SHAKER FIELD
D.C. OFFSET SHAKER STROKE
D.C. SUPPLY SHAKER COOLANT
OUTPUT SHAKER HEAT EXCH.
GAIN INPUT VOLTAGE
INPUT CURRENT
OUTPUT VOLTAGE
GAIN BAR GRAPH
4.3.1 Control shall be designed to operate from a local panel or an optional remote panel. The remote panel should be quoted as an option. The remote panel should include all of the functions in paragraph 4.3. Operation from either panel shall be selectable and the unused panel shall be automatically locked out
4.3.1.1 The control panel shall be prewired to allow remote startup, shutdown, and status monitoring via a remote pc.
4.3.2 Control panel shall include an auto function whereby the amplifier may be brought from OFF to FULL OPERATION mode with a single remote contact closure. The control panel shall provide output logic indicating when it is in the OPERATE mode.
4.3.3 The control panel shall provide digital meter readout of input DC voltage and current and output AC voltage and current.
4.3.4 Sine/Random: The system shall automatically sense the operation mode, i.e. sine or random, and automatically adjust the amplifier parameters for optimum performance in the operating mode. No manual reconnections shall be required for operation on sine or random.
5.0 Heat exchanger shall be housed in a single 19" electronic rack. It shall include a water to water heat exchanger, inner loop circulating pumps, reservoir, deionizer system, conductivity sensor with meter and limit relay, pressure gages, pressure interlocks, and outer loop water pressure interlock and proportional valve control.
Full shaker performance shall be available with outer loop water up to 80 F. A chiller shall not be required.
6.0 CABLING
All interconnecting electrical cables shall be supplied. Cable lengths shall be:
Power Amplifier to Shaker:
Power Amplifier to DC Field Console:
DC Field Console to Blower Motor Starter Control:
Field Console to Shaker:
7.0 HOSE AND WATER FLOW CONTROL
Twenty-five feet (7.6 m) flexible supply and return hose shall be supplied between the shaker and its cooling system. Included shall be automatic flow control valves to allow direct connection to purchaser installed piping.
8.0 UTILITIES
The system shall operate on the following utilities:
8.1 Electrical:
___ volts, 3 phase, 60 Hz
8.2 Water
Shaker with water-to-water heat exchanger system: No quality restrictions for input cooling to heat exchanger shall apply. The maximum inlet water temperature is 85 F. The vendor shall state the required flow vs. temperature data.
9.0 OPERATING MANUALS
Two copies of Operating and Service Instructions shall be supplied.
10.0 WARRANTY
The system shall be covered by warranty on material and workmanship for a period of one year from date of shipment.
11.0 Prospective bidders shall provide references of at least 3 facilities where the proposed equipment is installed and in use
The provisions and clauses in the RFQ are those in effect through FAC 01-24.
This procurement is a total small business set-aside. See Note 1.
The NAICS Code and the small business size standard for this procurement are AND 500 EMPLOYEES respectively. The offeror shall state in their offer their size status for this procurement.
All responsible sources may submit an offer which shall be considered by the agency.
Delivery to Marshall Space Flight Center, Huntsville, AL is required within 7 months ARO. Delivery shall be FOB Destination.
The DPAS rating for this procurement is DO-24.
Offers for the items(s) described above are due by COB 09/17/2004, to Procurement Office, PS22-K, Building 4619, room 140, Marshall Space Flight Center AL 35812, and must include, solicitation number, FOB destination to this Center, proposed delivery schedule, discount/payment terms, warranty duration (if applicable), taxpayer identification number (TIN), identification of any special commercial terms, and be signed by an authorized company representative. Offerors are encouraged to use the Standard Form 1449, Solicitation/Contract/Order for Commercial Items form found at URL:
http://server-mpo.arc.nasa.gov/Services/NEFS/NEFSHome.tml
Offerors shall provide the information required by FAR 52.212-1 (JAN 2004), Instructions to Offerors-Commercial, which is incorporated by reference. Addenda to FAR 52.212-1 are as follows:
52.211-6, Brand name or equal (Aug 1999)
If the end product(s) offered is other than domestic end product(s) as defined in the clause entitled "Buy American Act -- Supplies," the offeror shall so state and shall list the country of origin.
FAR 52.212-4 (OCT 2003), Contract Terms and Conditions-Commercial Items is applicable. Addenda to FAR 52.212-4 are as follows: 1852.223-72 and 1852.215-84
FAR 52.212-5 (June 2004), Contract Terms and Conditions Required To Implement Statutes or Executive Orders-Commercial Items is applicable and the following identified clauses are incorporated by reference: 52.203-6 (alt 1), 52.219-6, 52.219-8, 52.222-7, 52.222-19, 52.222-21,52.222-26,52.222-35, 52.222-36, 52.222-37, 52.225-1, 52.225-13, 52.232-33.
The FAR may be obtained via the Internet at URL: http://www.arnet.gov/far/
The NFS may be obtained via the Internet at URL: http://www.hq.nasa.gov/office/procurement/regs/nfstoc.htm
All contractual and technical questions must be in writing (e-mail marianne.r.campbell@nasa.gov or fax 256-544-0126) to Marianne Campbell not later than September 15, 2004. Telephone questions will not be accepted.
Selection and award will be made to the lowest price, technically acceptable offeror, with acceptable past performance. Technical acceptability will be determined by review of information submitted by the offeror which must provide a description in sufficient detail to show that the product offered meets the Government's requirement.
Offerors must include completed copies of the provision at 52.212-3, Offeror Representations and Certifications - Commercial Items with their offer. These may be obtained via the internet at URL: http://prod.nais.nasa.gov/eps/Templates/Commercial_Greater_Than_25K.doc . These representations and certifications will be incorporated by reference in any resultant contract.
An ombudsman has been appointed -- See NASA Specific Note "B".
It is the offeror's responsibility to monitor the following Internet site for the release of solicitation amendments (if any): http://prod.nais.nasa.gov/cgi-bin/eps/bizops.cgi?gr=D&pin;=62 . Potential offerors will be responsible for downloading their own copy of this combination synopsis/solicitation and amendments (if any).
