Considerations To Know About bar 178

(iii) When measurement with the cylinder isn't going to allow securing straight specimens, the specimens can be taken in almost any locale or course and will be straightened or flattened chilly by force only, not by blows.

(iii) For the goal of strain measurement, the Original strain need to be set though the specimen is underneath a anxiety of twelve,000 psi and the pressure indicator looking through becoming set at the calculated corresponding strain.

(iv) On the metallic plate connected to the best of your cylinder or long term portion thereof; adequate Place have to be left on the plate to provide for stamping at least 6 retest dates; the plate must be a minimum of 1⁄sixteen-inch thick and should be connected by welding, or by brazing.

(i) The remaining cylinders in Every lot have to be analyzed from the evidence strain drinking water-jacket or immediate expansion exam technique as prescribed in CGA C-one. The minimum examination stress should be maintained for the particular timeframe and the screening equipment need to be calibrated as prescribed in CGA C-one.

(iii) The following formula need to be used to compute the most longitudinal tensile anxiety on account of hydrostatic examination pressure:

(iii) Long-lasting volumetric enlargement might not exceed ten p.c of whole volumetric growth at check stress.

(iv) Long lasting volumetric expansion may well not exceed ten p.c of the entire volumetric expansion at take a look at stress.

(iv) Long-lasting volumetric growth might not exceed 10 percent of the full volumetric expansion at examination pressure.

Reheat therapy is licensed for turned down cylinders. Subsequent thereto, cylinders must go all prescribed exams to become appropriate. Maintenance by welding is just not authorized.

(3) Name plates are authorized, supplied that they can be completely and securely hooked up to the cylinder. Attachment by possibly brazing or welding is not more info permitted. Attachment by soldering is permitted supplied metal temperature would not exceed five hundred °File.

One list of three effect test specimens (for every take a look at) needs to be well prepared and analyzed for determining the impression Homes in the deposited weld metallic—

(2) The inspector need to verify ultrasonic inspection of all substance by inspection or by acquiring the material producer's certification of ultrasonic inspection. Ultrasonic inspection should be done or confirmed as possessing been executed in accordance with paragraph (b)(five) of the area.

(ii) One specimen should be taken from possibly head on a cylinder when both heads are made of the identical materials. Having said that, if The 2 heads are made of differing elements, a specimen must be taken from each head.

Notwithstanding the variation delivered With this paragraph, Every container have to or else conform into a DOT 2Q container in accordance with § 178.33a. The following problems also use under Variation two—

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