Flame protective devices for gas flame equipment

Simulation of protective devices to ensure the safety of technological processes using explosive gases

Modeling of systems and processes ◽

10.12737/2219-0767-2021-14-3-28-35 ◽

2021 ◽

Vol 14 (3) ◽

pp. 28-35

Author(s):

Viktor Kolotushkin ◽

Svetlana Sazonova ◽

S. Nikolenko

Keyword(s):

Safe Operation ◽

Calculation Algorithm ◽

Theoretical Substantiation ◽

Protective Devices ◽

Combustion Modes ◽

Detonation Combustion ◽

Hazardous Gases ◽

Gas Flame ◽

Explosion And Fire Safety ◽

Mechanical Actuation

The article presents a calculation algorithm for the theoretical substantiation of the design of protective devices used for the safe operation of explosive equipment and supply lines. Mathematical modeling is applied. The development of protective devices providing explosion and fire safety of gas-flame equipment used in construction is considered. The design of protective devices providing explosive and fire hazardous gases from deflagration to detonation combustion modes and devices developed on the principle of cutting off the flame by means of mechanical actuation of locking elements: a membrane and a conical valve are presented.

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Re-Embedding of Specimens for Maximum Orientation

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100096734 ◽

1972 ◽

Vol 30 ◽

pp. 696-697 ◽

Cited By ~ 1

Author(s):

Margot Brundage ◽

Robert F. Dunn

Keyword(s):

Tissue Block ◽

Gas Flame

Re-embedding of plastic impregnated tissue blocks is easily accomplished when a combination of carnuba and Tenax dental waxes is used. This method is particularly helpful when combined with capsule flat end embedding, because the entire orientation range of the microtome can be utilized for final exact positioning of the specimen. A demonstration of both techniques will be given.The advantages of re-embedding are: 1, complete freedom in orientation of the tissue, and 2, multiple segments of the same block can be used for various orientations. Re-embedding involves: 1, removal of a tissue block from the surrounding plastic (Fig. 1), and 2, orientation and embedding of the tissue into wax which has suitable support properties for sectioning.Equipment and materials needed for re-embedding include: dissecting microscope; wax mixture ( carnuba 35%, Tenax 65%); empty gelatine capsules; dental carvers; dissecting needles; #7 Dupont forceps; Pasteur pipettes; specimen holders; razor blades; and gas flame.

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