Outline of a test facility for combustor burn-through fire protection shield

1995 ◽  
Author(s):  
N Messersmith ◽  
S Murthy
Keyword(s):  
Fire Protection ◽  
Test Facility ◽  
Burn Through

Using a radiant heat test facility to study the options for the fire protection of structures involving coiled MBOR basalt fiber material

2021 ◽  
Vol 29 (6) ◽  
pp. 28-39
Author(s):  
A. N. Garashchenko ◽  
A. V. Vinogradov ◽  
I. Z. Dashtiev ◽  
N. V. Kobylkov ◽  
S. A. Terekhov
Keyword(s):  
Polymer Composite ◽  
Fire Protection ◽  
Composite Structures ◽  
Fossil Fuels ◽  
Heated Surface ◽  
Basalt Fiber ◽  
Fiber Material ◽  
Radiant Heat ◽  
Test Facility ◽  
Thermal Engineering

Introduction. Coiled MBOR basalt fiber material is used to demonstrate the potential of research into the fire protection of structures using a radiant heat test facility. Research methods. A set of high-power halogen lamps is used to simulate a high temperature impact. The heating intensity is adjusted by changing the voltage applied to the lamps, and it is controlled by the thermocouples that record the temperature of the heated surface of a fire proofing material. The studies have proven efficient for various types of fire proofing and various structures. They are especially relevant in providing rational fire protection of polymer composite structures having relatively low thermal resistance (80…120 °С) due to the fact that they are rarely tested in fired furnaces. Results and discussion. Several options of multilayered MBOR-20F fire proofing were tested. Dependences between time, on the one hand, the surface temperature of protected elements (200 × 300 × 20 mm polyurethane plates), and the temperature between the layers of the fire-proofing material, on the other hand, are presented under standard temperature conditions. Fire protection efficiency improvement by PLAZAS fire-resistant adhesive compound, applied between MBOR layers, is demonstrated. This fireproofing method is applicable not only to metal structures. It demonstrates high fireproofing properties and has a strong potential if applied to fireproof polymer composite structures and products. The measurements, taken by thermocouples in the course of a session of tests, can be used to estimate the thermophysical properties of fireproofing materials exposed to high temperatures, which are rare in most cases, although they are necessary for a thermal analysis. It is demonstrated that similar experiments can also be carried out at nonstandard heating temperatures (for example, when the combustion of fossil fuels is imitated). Conclusions. Experiments, conducted using the radiant heat test facility, and thermal engineering calculations allow to accelerate the selection of the optimal fire protection option and identification of the fireproofing thickness. Moreover, this method allows to reasonably minimize the number of costly fired furnace tests using fullscale samples of fireproofed structures and products.

scholarly journals Intumescent Polymer Metal Laminates for Fire Protection

Polymers ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 995 ◽  
Author(s):  
Laura Geoffroy ◽  
Fabienne Samyn ◽  
Maude Jimenez ◽  
Serge Bourbigot
Keyword(s):  
Fire Protection ◽  
Thin Layers ◽  
Intumescent Coatings ◽  
Thin Aluminum ◽  
Thermal Measurements ◽  
Polymer Metal ◽  
Fire Barrier ◽  
Steel Substrates ◽  
Burn Through

Intumescent paints are applied on materials to protect them against fire, but the development of novel chemistries has reached some limits. Recently, the concept of “Polymer Metal Laminates,” consisting of alternating thin aluminum foils and thin epoxy resin layers has been proven efficient against fire, due to the delamination between layers during burning. In this paper, both concepts were considered to design “Intumescent Polymer Metal Laminates” (IPML), i.e., successive thin layers of aluminum foils and intumescent coatings. Three different intumescent coatings were selected to prepare ten-plies IPML glued onto steel substrates. The IPMLs were characterized using optical microscopy, and their efficiency towards fire was evaluated using a burn-through test. Thermal profiles obtained were compared to those obtained for a monolayer of intumescent paint. For two of three coatings, the use of IPML revealed a clear improvement at the beginning of the test, with the slopes of the curves being dramatically decreased. Characterizations (expansion measurements, microscopic analyses, in situ temperature, and thermal measurements) were carried out on the different samples. It is suggested that the polymer metal laminates (PML) design, delays the carbonization of the residue. This work highlighted that design is as important as the chemistry of the formulation, to obtain an effective fire barrier.

Foamed geopolymers for fire protection: Burn‐through testing and modeling

2021 ◽  
Author(s):  
Serge Bourbigot ◽  
Johan Sarazin ◽  
Catherine A. Davy ◽  
Gaëlle Fontaine
Keyword(s):  
Fire Protection ◽  
Burn Through

Numerical Simulation of a Compartment Fire in a Nuclear Power Plant Containment Building

2002 ◽  
Author(s):  
Jason Floyd
Keyword(s):  
Fire Protection ◽  
Nuclear Power ◽  
Power Plants ◽  
Current Trend ◽  
Test Facility ◽  
Zone Model ◽  
Fire Dynamics ◽  
Computational Tools ◽  
Model Code ◽  
Advantages And Disadvantages

The current trend towards the increased use of risk assessment in the regulation of nuclear power plants will inevitably result in changes in the analysis of fire protection systems and the methods of analysis. Before fire protection can be regulated on a risk basis, a consensus must be reached on a number of issues. One key issue is what types of computational tools will be allowable for analyzing fire events, and what types of scenarios those tools will be approved for use. Reaching this consensus will require an understanding of the types of computational tools available and their inherent advantages and disadvantages. To aid with this understanding, three different methods of fire simulation are applied to an oil pool fire test in the HDR (Heiss Dampf Reaktor) containment test facility [1]. These methods are a hand calculation, the zone model code CFAST (Consolidated Model of Fire Growth and Smoke Transport) [2], and the computational fluid dynamics code FDS (Fire Dynamics Simulator) [3]. Each is applied to a steady-state portion of the test using, to the extent possible, the same set of input parameters. The results of the computation are compared to the test data. The comparisons show that each method is potentially suitable for use depending on the information required from the simulation. Each method will potentially have a role to play in risk based regulation depending on the scenario.

scholarly journals Validation of a Simulation Tool for an Environmentally Friendly Aircraft Cargo Fire Protection System

Aerospace ◽  
2021 ◽  
Vol 8 (2) ◽  
pp. 35
Author(s):  
Arnav Pathak ◽  
Victor Norrefeldt ◽  
Marie Pschirer
Keyword(s):  
Fire Protection ◽  
Fire Suppression ◽  
Nitrogen Concentration ◽  
Environmentally Friendly ◽  
Flight Test ◽  
Design Tool ◽  
Test Facility ◽  
Friendly Fire ◽  
Pressure Profiles ◽  
Suppression System

One of the objectives of the CleanSky-2 project is to develop an Environmentally Friendly Fire Protection (EFFP) system to substitute halon for the aircraft cargo hold. For this, an aircraft demonstrator including the cargo hold was equipped with a nitrogen-based fire suppression system. The demonstrator is located in the Flight Test Facility (FTF) low-pressure vessel and can thus be subjected to realistic cruise pressure conditions and take-off and descent pressure profiles. As a design tool, a zonally refined simulation model to predict the local oxygen and nitrogen concentration distribution in the cargo hold has been developed using the Indoor Environment Simulation Suite (IESS). The model allows for fast transient simulations of the suppression system operation. This paper presents a model validation case of knockdown during cruising, followed by a holding phase and descent.

Radiation Damage Studies with the HVEM

1972 ◽  
Vol 30 ◽  
pp. 680-681
Author(s):  
J. J. Laidler ◽  
B. Mastel
Keyword(s):  
Radiation Damage ◽  
Stainless Steels ◽  
Volume Expansion ◽  
Austenitic Stainless Steels ◽  
Test Facility ◽  
Fast Breeder Reactors ◽  
Breeder Reactors ◽  
Under Construction ◽  
Development Laboratory ◽  
Insight Into

One of the major materials problems encountered in the development of fast breeder reactors for commercial power generation is the phenomenon of swelling in core structural components and fuel cladding. This volume expansion, which is due to the retention of lattice vacancies by agglomeration into large polyhedral clusters (voids), may amount to ten percent or greater at goal fluences in some austenitic stainless steels. From a design standpoint, this is an undesirable situation, and it is necessary to obtain experimental confirmation that such excessive volume expansion will not occur in materials selected for core applications in the Fast Flux Test Facility, the prototypic LMFBR now under construction at the Hanford Engineering Development Laboratory (HEDL). The HEDL JEM-1000 1 MeV electron microscope is being used to provide an insight into trends of radiation damage accumulation in stainless steels, since it is possible to produce atom displacements at an accelerated rate with 1 MeV electrons, while the specimen is under continuous observation.

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