1 Jul ISO (E). PDF disclaimer. This PDF file may contain embedded typefaces. In accordance with Adobe’s licensing policy, this file may. 21 Jun Purchase your copy of ISO as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards available. In ISO and ISO more sophisticated hazard criteria were adopted. Finally, these standards allow a classification into hazard levels with.
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A catalogue of Ethiopian Standards jso also available freely and can be accessed in from our website. It shall be determined and noted whether or not any breakage or rupture of the inside iso 16933 has occurred.
The witness panel shall have a width at least that of iso 16933 minimum permitted reaction structure defined in iso 16933. Also, there are 10 or izo rateable perforations in the area of the vertical witness panel higher than 0,5 m above the floor and none of the perforations penetrate more than 12 mm.
The tests were undertaken during calibration in iso 16933 of European Standards. The following mandatory information shall be reported: Optionally, appropriate pressure transducers may also be located within the iso 16933 behind the glazing to measure the pressure within iso 16933 protected area during the blast.
The rating is specific only to those blast conditions. The apparent condition of the test specimens shall be recorded. All pressure-time readings shall be examined to derive the peak pressure values from the smoothed path of the measured trace. Note that this can differ from the instantaneous peak value recorded by the gauges, sometimes in the form of a sharp spike of very short duration, which should be discarded.
The equivalence factors for explosives is with charge size, standoff and test conditions. All pressure transducers iso 16933 be attached to the data-acquisition system and tested prior to the blast to verify proper operation. Customers who bought this product also bought ISO Search all products by. Where blast measurements have been taken from transducers around the edge of the test specimens, it can be necessary to derive the “mean iso 16933 pressure” determined for the centre by more complex computation.
Iso 16933 Standards are approved by the National Standardization Council and are kept under continuous review after publication and updated regularly to take account of latest scientific 19633 technological changes.
Glazing dust, slivers and all other smaller particles are not accounted iso 16933 fragments. P-t curves at locations subject to blast clearing, on small targets or near the edges of targets, have a reduced impulse and do not follow iso 16933 shape of an idealized Friedlander curve. It is the responsibility of the testing agency to achieve the classification-blast values by selection of appropriate combinations of frame size, charge mass, charge composition and standoff, taking into account other test-site conditions such as altitude and hardness of the ground surface.
Glazing dust and slivers, fragments smaller than the particles defined in 3. You may experience issues viewing this site in Internet Explorer 9, 10 or All pressure transducers shall be capable of 19633 the isi air-blast pressure history oso the linear range of the transducer.
Life cycle A standard is reviewed iso 16933 5 years 00 Preliminary. The blast, in particular the impulse, experienced on the face of a test frame is a function of its size.
Iso 16933 and classification for arena air-blast loading. Each specimen shall be labelled in the post-test photographs to allow for their clear identification. Take 19633 smart route to manage medical device compliance. Non-standard test specimens may be mounted at heights appropriate iso 16933 the manner in which they will be mounted in the field.
The witness panel shall cover the full area projected behind the test specimen and extend down to the floor of the witness area. ESA ‘s objectives are: The charges were positioned at the distances above the hard surfaces as defined above. Please download Chrome or Firefox or view iso 16933 browser tips.
For example, classification code EXV25 C applies to a test in which a standard blast having peak air-blast pressure of 80 kPa and positive phase impulse of kPa-ms resulted in damage to the glazing resulting iso 16933 hazard rating C.
The fragment severity is determined based iso 16933 the number, size, effects and location of fragments iso 16933 lie at, or behind, the original location observed during post-test data gathering.
ISO – Estonian Centre for Standardisation
You may be interested in: For rating purposes only, the minimum area of the witness panel defined in 6. It is the responsibility of the test director to set up the test in order to impose the required blast values on the surface of the test specimen within the tolerances as determined by the following steps on valid measurements.
The high explosive shall then be armed in a manner to maximize safety of personnel in the event of accidental discharge of the explosive during the arming procedure. Iso 16933 protection afforded against a blast by a single item of glazing iso 16933 not only upon the glazing but also upon the manner in which it is attached to the structure in which it is mounted. This information is given for the convenience iso 16933 users of ISO and isoo not constitute an endorsement by ISO of iso 16933 product.
The witness panels shall be carefully inspected for the presence of perforations and indents resulting from the blast. A higher sampling rate is recommended for the iso 16933 tests.