TWO AIR COMPRESSORS AND RECEIVER TANK

Questions & Answers / Clarifications

This document provides clarifications and responses to questions regarding RFI #3 for Air Compressors.

• Power Requirements: The existing power is 240v, 3-phase delta with 4 AWG wires. A new AS25 compressor requires 230v and 2 AWG wire, necessitating confirmation of sufficient amperage availability. Existing breakers are 100 amp each.
• Dryer Power: The new dryer is sized for both compressors, meets CFM requirements, and operates at 230v/1ph. Confirmation of sufficient amperage is needed.
• Filters: The solicitation specifies filters with a 125-psi max rating, which are insufficient. 232 psi max filters will be provided as 125 psi is too low. Particulate filters should be placed after the tank, and oil filters after the dryer. Cyclone filters are required before the dryer on both compressors unless a wet tank is used.
• Piping Material: Soldered Type L copper is specified, but brazed copper is recommended for compressed air. Steel pipe is not allowed.
• Compressor Type: Gear drive compressors are called for, but Kaeser does not offer them in this size range. Belt-driven or direct-driven rotary screws are recommended and acceptable.
• Pressure Gauges: Isolation valves between the gauge and source are required, despite potential conflicts with local codes, as this is a Federal Installation.

These clarifications address technical specifications for power, filtration, piping, and compressor type, which may impact vendor proposals and equipment selection.

Form / Attachment / Pricing Sheet

This document appears to be a label or plate associated with an electrical panel, likely providing information about its configuration and safety ratings. It is relevant to bidders as it identifies specific equipment within the facility that may be part of the opportunity.

• Identifies the panel as "COMP.PNL-7072-MCC1".
• Indicates an "ARCFLASH 4" rating, suggesting a safety classification.
• Labels two circuit breakers as "#1" and "#2".
• Contains handwritten text "COMPRESSORS" above the panel door, likely indicating the equipment powered by this panel.
• Includes the manufacturer "SIEMENS" and "Load Center" designation.

This information helps bidders understand the existing electrical infrastructure related to the opportunity. It may be crucial for assessing the scope of work, identifying specific components to be serviced or replaced, and understanding safety requirements associated with the equipment.

Questions & Answers / Clarifications

This document provides clarifications and answers to vendor questions regarding the RFI for Air Compressors.

• Air Dryer Sizing: The air dryer must be sized for the maximum airflow of the entire system (214 CFM), not the 150 CFM mentioned in a different section. A 150 CFM dryer is insufficient for a two-compressor system.
• Electrical Voltage: Clarification is requested regarding the existing electrical voltage at the installation site (240V is mentioned as the voltage at the disconnects in previous RFIs). Vendors need confirmation of the exact voltage to provide a complete quotation.

Vendors should ensure their quotations account for the correct air dryer sizing (214 CFM) and the confirmed site electrical voltage. This clarification may impact the specifications and pricing of the proposed equipment.

Statement of Work (SOW) / Performance Work Statement (PWS)

This document outlines the technical requirements for air compressor systems, including various components and their specifications.

• Air Compressors (AC): Factory-packaged units with 3-phase motors, NEMA 250 Type 1 enclosure, UL listing compliance, automatic alternation, and intake air filters/silencers. Requires aftercoolers and moisture separators.

• Lubricated Compressors: Single-stage, gear-drive units operating at speeds not exceeding 3600 rpm, with specified capacity and discharge pressure. Must include a common subbase, roller or ball main bearings, and a piped discharge to the air receiver.

• Air Receiver(s) (AR): Designed for 200 psi working pressure, factory tested to 1.5 times working pressure. Must include safety relief valves, pressure gauges, and automatic/manual drains. Construction must comply with ASME BPVC SEC VIII D1.

• Intake Air Supply Filter: Dry type with 99% collection efficiency for particles >10 microns, capable of withstanding 125 psi.

• Pressure Regulators: Designed for a maximum inlet pressure of 175 psi and 200 degrees F, single-seated, pilot-operated, with bronze body/trim, threaded connections, and a pressure gauge.

• Refrigerated Air Dryer(s) (AD): Cycling, air-cooled, thermal mass type, electric-motor-driven, capable of delivering 38 degrees F, 100 psig air at dew point. Includes automatic condensate ejection, transformers, switches, gauges, thermometers, controls, and filters.

• Copper Tubing: ASTM B88, Type L, seamless, drawn-temper, water tube with wrought-copper fittings (ASME B16.22).

• Compressed Air Filter(s): To be provided upstream and downstream of air dryers as recommended by the supplier.

• Compressors must operate continuously against designed discharge pressure.

• Air receivers must meet ASME BPVC SEC VIII D1 standards.

• Intake air filters must have 99% collection efficiency for particles >10 microns.

• Refrigerated air dryers must deliver 38 degrees F, 100 psig air at dew point.

Not specified in this document.

• Compliance with UL listing requirements for air compressors.
• Construction in accordance with ASME BPVC SEC VIII D1 for air receivers.
• Use of ASTM B88, Type L copper tubing and ASME B16.22 fittings.
• Installation of filters and dryers as recommended by the compressed air system supplier.

Questions & Answers / Clarifications

This document contains responses to vendor questions regarding the procurement of air compressors, clarifying technical specifications, installation requirements, and contractual details.

• Electrical System: The existing system is 240V, 3-phase, 4-wire DELTA, with 4AWG wiring from the panel to the disconnect.
• Compressor Configuration: A lead-lag configuration is required, where units alternate as the lead unit. A single starter and microprocessor to run both compressors is not an option.
• Dryer Requirements: A separate air dryer is required, not integrated. The dryer shall be sized to handle both compressors operating in a lead-lag configuration. There is only one air dryer specified.
• Performance Requirements: Compressors must meet the CFM and PSI requirements shown on Drawing M-01. The specific horsepower (e.g., 30 HP vs. 25 HP) is secondary to meeting these performance metrics.
• Installation & Responsibilities: The Contractor is responsible for all work, equipment, materials, and disposal (including oil and water removal). The contractor will also unload equipment upon delivery.
• Piping: Piping shall be copper and must be soldered; pro-press or other fittings are not allowed.
• Set-Aside: This opportunity is a set-aside for small businesses of any type.
• Country of Origin: No country-of-origin requirement as this is a Commercially Available Off-the-shelf Product.

This Q&A document provides critical clarifications that bidders must consider when preparing their proposals. It refines technical specifications, installation responsibilities, and configuration requirements, directly impacting the scope of work and pricing.

Form / Attachment / Pricing Sheet

This document provides detailed specifications and a piping diagram for the compressed air system required for Hangar 7 at Westover Air Reserve Base, MA. It includes schedules for air compressors, air dryers, and compressed air receivers, along with a detailed piping schematic.

• Air Compressor Schedule: Details two compressors (AC-01, AC-02) with specifications for service, configuration, air rating (ACFM), electrical requirements (HP, Volts, Phase, Hz), weight, and notes including low sound enclosure and minimum pressure.
• Air Dryer Schedule: Details one air dryer (RAD-01) with specifications for type, design pressure, pressure drop, rated flow, ambient temperature, refrigerant type, electrical requirements, and weight. Notes specify filtration requirements and single-point connection.
• Compressed Air Receiver Schedule: Details one receiver (AR-01) with specifications for system served, design pressure, orientation, material, capacity, and weight. Notes include requirements for safety valve, pressure gauge, and pre-receiver filtration.
• Compressed Air Piping Detail: A schematic illustrating the piping layout, including components such as air receivers, compressors, dryers, filters, regulators, and automatic drain valves. It specifies connection types and pressure ratings.

This document is crucial for bidders to understand the specific technical requirements and design of the compressed air system. It will inform the scope of work, material selection, equipment procurement, and installation details necessary for a compliant proposal. Bidders must ensure their proposed system meets or exceeds these specifications.

Form / Attachment / Pricing Sheet

This document contains photographs of existing compressed air systems, likely intended to provide visual context for a potential maintenance, repair, or replacement opportunity. It shows two compressors, their associated disconnects, and piping.

• Compressor on Left: Labeled as nonoperational. It is a Palatek 25D model.
• Compressor on Right: Labeled as operational. It appears to be a Champion model.
• Disconnects: Images show the electrical disconnects for both the nonoperational and operational units.
• Piping: Visuals include the piping from the air dryer end.
• Overall View: A view facing South shows the general layout of the equipment.

These images help bidders assess the current state of the compressed air system, identify specific equipment models, and understand the physical environment. This information is crucial for developing accurate proposals related to repair, replacement, or maintenance services.

Form / Attachment / Pricing Sheet

This document outlines the specific technical requirements and features for air compressors and related equipment. It serves as a detailed specification for potential bidders to understand the exact nature of the items being procured.

• Air Compressors (2 units): Rotary Screw type, 30 HP, delivering 107.5 CFM at 110 psig, with low sound (69 dBA), TEFC motor, NEMA 4 enclosure, and digital controller.
• Air Dryer (1 unit): Cycling Refrigerated type, removing moisture to a 38°F dew point, designed for energy savings.
• Air Filtration: Includes a General Purpose Filter (1 micron) before the dryer and a High-Efficiency Oil Removal Filter (0.01 micron) after the dryer.
• Air Receiver Tank (1 unit): 400-gallon vertical tank, built to ASME safety standards, including a safety valve and pressure gauge.
• Condensate Management System (1 unit): Oil/Water Separator for environmental compliance.
• Installation and Service: Comprehensive installation by a subcontractor, including removal of existing units, piping, electrical work, system start-up, programming, and personnel training.
• Warranty: Details of coverage and duration are to be provided.

This attachment provides the critical technical specifications that bidders must meet or exceed. It defines the scope of the required equipment, installation services, and warranty, directly impacting proposal development, technical compliance, and pricing.

Forms / Attachments / Pricing Sheets

This document, titled "CLAUSES INCORPORATED BY REFERENCE," lists and provides the full text for various clauses that are incorporated into a solicitation or contract. It serves as a reference for bidders to understand the contractual terms and conditions that will apply to the opportunity.

• Clauses Incorporated by Reference: A table listing clause numbers, alternate/deviation numbers, clause titles, year/month of the clause, and the section it belongs to.
• Clauses in Full Text: Provides the complete wording for specific clauses, such as "Prohibition on the Acquisition of Covered Defense Telecommunications Equipment or Services-Representation" (252.204-7017) and "Buy American-Balance of Payments Program Certificate" (252.225-7000).
• Representations and Certifications: Includes numerous provisions related to offeror representations and certifications, covering areas such as:
  • System for Award Management (SAM) registration and representations.
  • Small business status (small business, small business joint venture, veteran-owned, SDVOSB, EDWOSB, WOSB, HUBZone).
  • Buy American Act and Trade Agreements.
  • Prohibition on contracting with entities engaging in certain activities or transactions relating to Iran.
  • Ownership or control of offeror.
  • Delinquent tax liability or felony conviction.
  • Predecessor information.
  • Covered telecommunications equipment or services.
• Contract Terms and Conditions: Lists required clauses for commercial products and services, including prohibitions on certain agreements, reporting requirements, and specific statutory or executive order implementations.

This document is critical for bidders as it outlines the mandatory clauses and representations that must be understood and complied with to submit a compliant offer. Bidders must carefully review these clauses to ensure they meet all legal, regulatory, and contractual requirements. Failure to address these clauses correctly can lead to disqualification. Key areas of focus include small business status, Buy American provisions, and representations regarding telecommunications equipment and foreign entities.

Solicitation / RFP / RFQ

This is a Request for Quote (RFQ) for Air Compressors and a Receiver Tank. The government is procuring these items as a single lot.

• One (1) Lot of Air Compressors and Receiver Tank, conforming to the "Salient Features Air Compressors and Receiver Tank" document.

• Not specified in this document.

• Evaluation Factors: Lowest Price Technically Acceptable (LPTA).

• Price: Total evaluated price will be the sum of CLIN 0001.

• Technical Acceptability: Quotes will be rated acceptable or unacceptable. Vendors MUST provide detailed information on the duration and coverage of warranties for each item. Failure to provide warranty information may result in disqualification.

• Price and technical factors will be weighed equally.

Vendors must provide the following:

• Company Name & Address

• Point of Contact

• Telephone Number

• Email Address

• Business Size

• UEI Number

• Cage Code

• The document is a memorandum dated 06 February 2026, referencing Solicitation FA660626Q0008.