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DRDO ANNUAL REPORT 2017

demonstrate efficacy of water mist system for         chemical substitutes for Halon 1301 and 1211
onboard fire protection application in simulated      Halon based on MEC and Toxicity evaluations.
engine room chamber. A twin fluid low pressure        Design documents and detailed experimental
water mist system for generation of mist with         report titled ‘Design and Development of screening
mean droplet diameter less than 50 µm has been        tool for MEC determination at par with standard
designed and installed in a 1000 m3 ship engine       Cup burner apparatus using small quantity (1-3
room simulated compartment. The performance of        g) of agent’ has been prepared. Toxicity study
the mist system has been evaluated as per the fire    of 2-Bromo-(1,1,1,4,4,4-hexafluoro) but-2-ene
scenarios that may occur in a naval ship engine       methane in respect of acute toxicity (Oral, Dermal,
room and those mentioned in IMO Circ 1165.            Inhalation, PSII) has been determined through
The water mist system has been demonstrated           DRDE, Gwalior and the compound was found
to suppress various types of Class A and Class        slightly toxic. Based on MEC and toxicity data,
B pool and spray fires within 120 seconds with        two molecules (2,2,2-Trifluoroiodoethane and
thermal management (compartment temp. ≤ 60            2,2,3,3,3-Pentafluoroiodopropane) synthesized under
°C) achieved within 60 seconds as against the         project were identified as promising molecules.
IMO qualification criteria of 900 seconds and         Lab scale process demonstration for synthesis of
300 seconds (for 100°C), respectively.                2,2,2-trifluoroiodoethane (shortlisted molecule)
                                                      to HEMRL has been done. Development of by-
High-Pressure Water Mist Fire Suppression             product(s) recovery methodology for scale up of
System for Naval Ships (HP-WMFSS)                     two qualified molecules (trifluoroiodoethane and
                                                      pentafluoroiodopropane) has been completed.
     The main objective of the project is to design,  Technical report has been prepared.
develop and demonstrate a high-pressure water
mist fire suppression system (HP-WMFSS) for           Development of Multifunctional Moisture
1000 m3 (20 x 10 x 5 m) simulated ship engine         Barrier for Fire Protective Suits (MBFPS)
machinery compartment for fire suppression and
thermal management. Design and fabrication                 The main objective of the project is to develop
of first prototype of high pressure single fluid      a water proof, breathable & flame retardant
atomizer and characterization for droplet size, flow  moisture barrier layer as per JSQR and NFPA
rate and spray cone angle has been completed.         1971 (2013) and to test and evaluate properties
Fire suppression performance evaluation in            of developed Moisture Barrier as per JSQR and
40 m3 chamber on three size of pool fires             NFPA 1971 (2013). During the year, Biaxially
having HRR of 300 KW, 500KW and 800 KW                stretched Microporous expanded PTFE membrane
in obstructed and un-obstructed condition is          was prepared and optimized at lab level.
also completed.
                                                      System Testing, Evaluation & Training Facilities
Wireless Instant Fire Detection Suppression           at DRDO Skill Development Centre at Pilkhuwa
System (WIFDSS) for Armoured Fighting
Vehicles (AFVs)                                            The objective of the project is to develop state-
                                                      of-the-art infrastructure for skill development in
     The main objective of the project is to          modern fire fighting techniques, fire protection
design and develop the Wireless Instant Fire          materials and safety systems. During the year,
Detection & Suppression system for armoured           design of fire training simulators comprising
fighting vehicles. Qualification, testing and trial   of POL tank fire simulators, flange oil leak
of prototype has been successfully completed.         fire simulator and LPG bullet gas leak fire
Development of Wireless IFDSS prototype has           simulators has been completed and the case is
been completed.                                       being processed for its development.

New Organic Molecules to be used as Halon             Establishment of Scaling Laws for Explosion
Alternatives (NOMHA)                                  inside Tunnel

     The objective of the project is to develop            The main objectives of the project are: (a)

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