(two) The design company temperature could be the coldest temperature for which a cylinder is ideal. The necessary design assistance temperatures for every cryogenic liquid is as follows:

(iii) For the objective of strain measurement, the Preliminary strain have to be set though the specimen is under a pressure of twelve,000 psi plus the strain indicator reading through getting established on the calculated corresponding pressure.

Stress-retaining products have to be identified by any appropriate process that does not compromise the integrity of the cylinder. Plates and billets for hotdrawn cylinders must be marked with the warmth quantity.

(2) A plugged cylinder is one particular wherein a everlasting closure in The underside of the concluded cylinder continues to be effected by a plug.

(iii) The next method needs to be accustomed to estimate the utmost longitudinal tensile pressure as a result of hydrostatic take a look at force:

(three) Each test cylinder must stand up to flattening to 9 times the wall thickness without cracking. When the alternate bend take a look at is applied, the examination specimens must continue to be uncracked when bent inward around a mandrel within the path of curvature from the cylinder wall until the inside edges are in a distance aside not greater as opposed to diameter in the mandrel.

(one) No defect is permitted that is likely to weaken the concluded cylinder appreciably. A reasonably sleek and uniform floor is required.

(1) Each cylinder must be uniformly and appropriately heat dealt with just before take a look at through the applicable method more info referenced in desk 1 of appendix A to this element. Warmth remedy has to be completed All things considered forming and welding functions, apart from that when brazed joints are used, warmth treatment method will have to abide by any forming and welding functions, but could be finished just before, in the course of or following the brazing operations (see paragraph (n) of the section for weld repairs).

(three) A plugged cylinder is one by which a long lasting closure in the bottom of the concluded cylinder is effected by a plug.

(i) The remaining cylinders in Every single great deal need to be examined by the evidence stress h2o-jacket or direct growth check approach as prescribed in CGA C-one. The minimum amount exam pressure must be maintained for the particular timeframe along with the testing products should be calibrated as prescribed in CGA C-1.

Materials needs to be discovered by any ideal process other than that plates and billets For warm-drawn cylinders has to be marked with the heat number.

Each and every cylinder, right before insulating and jacketing, need to successfully stand up to a strain take a look at as follows:

The seamless hemispheres and cylinders could possibly be pressure relieved or annealed for forming. Welded container has to be anxiety relieved in a temperature of 775 °F ±twenty five° just after course of action treatment method and ahead of hydrostatic check.

A person completed cylinder chosen at random out of every wide range of 500 or fewer successively generated has to be hydrostatically examined to four