Amendment 1 - Pugmill RFIs.pdf
PDF 311 KB Posted
- Attached to
- Amendment 1 - Portable Pugmill RFIs Federal contract opportunity
- Solicitation number
- FA500025Q0072
About this file
This document is an Amendment 1 to a Request for Information (RFI) for a Portable Pugmill Plant dated 22 September 2025. The specifications detail a comprehensive mobile asphalt mixing plant with a 300 TPH nominal production capacity, featuring a 60HP power system and multiple integrated components. Key specifications include a 12 x 5¼ steel I-beam frame, a 13.0 cubic yard aggregate bin, a 30" collecting conveyor, a 7'L x 3'7"W x 2'10"H mixer chamber with twin steel shafts and 42 reversible steel-chrome paddles, and a DOT-compliant tandem axle trailer mounting. The plant includes advanced features such as NEMA IP65 electrical enclosures, OSHA-compliant safety systems, variable frequency drives, a 60 GPM asphalt pumping system, and a collapsible 17'L x 30"W discharge conveyor. The amendment includes multiple clarifying questions and acceptances from the vendor, indicating an interactive specification refinement process.
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Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| Attachment 3 - Salient Characteristics FA500025Q0072.pdf | ||
| Attachment 2 - Price Schedule FA500025Q0072.pdf | ||
| Attachment 1 - Provisions and Clauses FA500025Q0072.pdf | ||
| COMBO-FA500025Q0072 Portable Pugmill.pdf |
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Text version
Amendment 1 - RFIs
Portable Pugmill Plant
22 September 2025
1 Portable Pugmill Specifications One
Bin Plant
1.1 Frame - 12 x 5¼ steel I-beam frame. Lifting and fastening eyelets.
1.2 1st Aggregate Bin–
• 13.0 yds3 main aggregate bin; adjustable gate for regulating material flow to the main conveyor; Triple-ply vulcanized 30 conveyor belt; 7.5HP electric motorreducer with anticorrosion protection and frequency inverter for material flow control; Built in ¼ carbon steel; Triple-rib reinforced design; Trapezoidal inferior opening; OSHA compliant safety guards along conveyor belt. Is a variable frequency drive (VFD) acceptable? Acceptable
1.3 Collecting Conveyor
• 30" wide main conveyor with triple-ply vulcanized conveyor belt, powered by a
10.0 HP electric motor with anti-corrosion protection and frequency inverter for material flow control; Self adjustable belt scraper; OSHA compliant safety guards along conveyor belt. Is a 36” wide conveyor belt feeding the pugmill acceptable?
This conveyor is typically set at a fixed speed for more accuracy with the weigh bridge. Is this acceptable? Acceptable
1.3 Monitoring & Control System reliable and proven monitor and control system for accurate feeds and loadout. We are not sure what his statement means exactly.
Accurate feed is provided by calibrating each material and using VFDs to control the speed of each. IS the loadout system your referring to a truck loadout system?
Danfoss DM430E PLUS+1 Monitoring & Control System or equal will be acceptable.
1.4 Control Panel - houses electrical system shut off switch, digital monitor with all system readings, and controls for each component. NEMA certified enclosure.
Digital monitoring – is this an amp meter on each motor? See 1.3 or equal.
1.5 Electrical System- NEMA IP65 enclosure for drives and frequency inverters;
electrical shut-off switch; NEC compliant, heavy-duty wiring.
1.6 Paint - Anti-corrosion epoxy primer; Automotive grade, high performance polyurethane paint throughout unit.
1.7 Safety - (5) Emergency stops throughout the unit; OSHA Compliant safety guards along all conveyor belts; Limit switch for mixing chamber covers; OSHA Compliant safety decals; Safety railing along Pugmill catwalk.
60HP Power:
1.8
• 300 TPH nominal production capacity
• 7'L x 3' 7'W x 2' 10"H mixer dimensions
• A-36 1/4" steel pugmill chamber
• Twin 5/16" steel shafts w/ 21 reversible 1" steel-chrome paddles on each shaft
• Abrasive-resistant, 1/4" Hardox 500 replaceable bottom liner plates
• Powered by 60HP electric motor with reducer and anticorrosion protection
• Two independent piping circuits within chamber for asphalt and/or water pumping systems.
• Skid mounted – Our pugmill is an integral part of the chassis. Is this acceptable?
Acceptable
• Control Panel for Skid Mounted Pugmill Included
1.9 Portability for Two or Three Bin Plant:
• Fifth wheel, DOT-Compliant, tandem axle trailer mounting; Mechanical 3-leaf suspension; ABS brakes on one of the axles, Air brakes on the other; Steel rims and 11" x 22.5" tires, 4 trailer jacks for setting at jobsite; NHTSA-compliant
Trailer traffic lights, reflectors and connector; Within standard transit dimensions. Please see drawing attached. Are the shipping dimensions acceptable? We will review/determine if an exact drawing is acceptable at this time.
1.10 Asphalt Pumping System | Metering System: 60 GPM gear pump, powered by 5 HP electric system with frequency inverter for rate control; wired to control panel with potentiometer.
1.11 Flushing System for Asphalt Pumping System Do you also want a water pump and meter? Yes
1.12 Electric vibrator 3/4 HP, 220/440VCA
1.13 Collapsible Discharge Conveyor:
• 17'L x 30"W with 10.0 HP electric motor
• Hydraulic controls for finished product Collapsible Belt Is an electric motor acceptable on this conveyor with quick disconnect plug and receptable to connect to external junction box located on the chassis? Acceptable
File details come from the government source that posted it. Updated .