N00173-24-S-BA01 Amendment 0006.pdf
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- Attached to
- NRL Long Range Broad Agency Announcement (BAA) for Basic and Applied Research Federal contract opportunity
- Solicitation number
- N00173-24-S-BA01
About this file
This is Amendment 0006 to the Naval Research Laboratory (NRL) Broad Agency Announcement (BAA) #N00173-24-S-BA01 for Long Range Basic and Applied Scientific Research, dated June 24, 2026.
The amendment adds Summary Topic 61-24-26 addressing the compatibility of Fluorine-Free Foam (F3) with non-aspirating sprinkler nozzles on Navy surface combatants. NAVSEA 05P5 is transitioning from traditional Aqueous Film Forming Foam (AFFF) to F3 for shipboard use and seeks acceleration options to transition ships earlier than originally projected. The primary technical challenge involves ensuring F3 compatibility with the Tyco® Model SB flush-deck nozzle installed on flight decks of all U.S. Navy surface combatants. The existing SB nozzle operates at 30 psi minimum pressure with a K-factor of 5.1 gpm/psi½, delivering approximately 28 gpm at an application rate of 0.06 gpm/ft² across the flight deck.
The Naval Research Laboratory's Navy Technology Center for Safety and Survivability is soliciting innovative nozzle technologies and engineering methods to increase aspirating capabilities. Proposals should address one of three approaches: (1) develop an improved aspirated flush-deck nozzle for new installations; (2) develop a retrofit design kit to modify existing SB nozzles; or (3) develop pre-aspiration capability in inlet piping upstream of the nozzle. Preferred solutions must enhance aspiration while maintaining acceptable distribution patterns, maintaining cost-effectiveness, and demonstrating minimal intrusion for backfit applications. Solutions must be compatible with F3 firefighting agents at the existing 0.06 gpm/ft² application rate and 30 psi operating pressure, be robust against shock and vibration, resist corrosion and plugging, and avoid obstruction of aircraft operations. Respondents should submit White Papers to code6101@nrl.navy.mil, allowing one month before requesting receipt confirmation. All other BAA terms and conditions remain unchanged.
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Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| N00173-24-S-BA01 Amendment 0004.pdf | ||
| FY24 BAA Announcement FINAL.pdf |
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Text version
Amendment 0006 – June 24, 2026
NRL BAA Announcement #N00173-24-S-BA01 Long Range Broad Agency Announcement (BAA) for Basic and Applied Scientific
Research
The purpose of this amendment is to add Summary Topic 61-24-26 to Appendix 1 as follows:
61-24-26 - AFFF ALTERNATIVE PROGRAM COMPATIBILITY OF FLUORINE-FREE
FOAM (F3) WITH NON-ASPIRATING SPRINKLER NOZZLES
INTRODUCTION: NAVSEA 05P5 has an approved Aqueous Film Forming Foam (AFFF) Alternatives program to transition Fluorine-Free Foams (F3) for shipboard use, test them with Navy-ship equipment and systems, identify the needed hardware changes to make them effective, and to establish a military specification for their use. In addition, DASN (RDA) has requested that NAVSEA propose acceleration options to potentially transition ships earlier than originally projected.
One of the major challenges for transitioning F3 products for shipboard use will be the compatibility using F3 products with non-aspirating fixed sprinkler nozzles such as the Tyco® Model SB flush-deck nozzle used on the flight decks of all U.S. Navy surface combatants (see Figure 1).
The SP flush-deck nozzles are installed to provide an application rate of 0.06 gpm/ft2 over the entire flight deck. The Tyco® SB has a K-factor of 5.1 gpm/psi1/2 and operates at a pressure of 30 psi (minimum nozzle pressure) resulting in a flow rate ~ 28 gpm.
Figure-1: Tyco® SB Flush-Deck Nozzle
In support of the new AFFF Alternative program, the Navy Technology Center for Safety and Survivability of the Naval Research Laboratory is investigating innovative nozzle technologies and/or engineering methods that will help to increase the aspirating capabilities of the SB flush-deck nozzles. The desires for consideration include:
(1) Develop an improved aspirated flush-deck nozzle (forward fit option).
(2) Develop an SB flush-deck Aspirating Design Kit that could modify the aspirating capabilities of the existing installed SB flush-deck nozzles (Back-fit option).
(3) Develop an aspirating capability to the inlet nozzle piping that could pre-aspirate the foam solution prior to the SB flush-deck nozzle.
Preferred solutions will enhance aspirating capabilities while maintaining acceptable distribution patterns at an affordable cost with minimal intrusion (for backfit) and be compatible with Fluorine- Free Foam (F3) firefighting agents using the existing SB Flush-deck application rate of 0.06 gpm/ft2 and operates at a pressure of 30 psi (minimum nozzle pressure) resulting in a flow rate ~ 28 gpm.
Proposals must clearly indicate how innovation improves aspiration capabilities and provide value added and performance.
Proposals are encouraged to consider the unique challenges of shipboard service. Solutions should be robust (shock/vibration resistant) and appropriate for the anticipated environmental exposure (corrosion/plugging), and shall not be unusually obtrusive to aircraft operations.
Address White Papers (WP) to code6101@nrl.navy.mil. Allow one month before requesting confirmation of receipt of WP, if confirmation is desired. Substantive contact should not take place prior to evaluation of a WP by NRL. If necessary, NRL will initiate substantive contact.
All other terms and conditions remain unchanged.
mailto:code6101@nrl.navy.mil
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