(iii) Make copies of all published notifications available for inspection by a agent from the Division.
(i) The porous product might not disintegrate or sag when wet with solvent or when subjected to ordinary services;
(ii) In utilizing the “extension under load” system, the overall strain (or “extension beneath load”), equivalent to the strain at which the 0.two p.c permanent strain takes place could be determined with adequate precision by calculating the elastic expansion with the gauge length less than acceptable load and adding thereto 0.
(i) The remaining cylinders in Every great deal need to be examined from the evidence tension h2o-jacket or immediate enlargement test system as prescribed in CGA C-1. The bare minimum test strain have to be maintained for the particular timeframe as well as the screening tools must be calibrated as prescribed in CGA C-1.
Cylinders have to be made making use of equipment and processes ample to make sure that Just about every cylinder manufactured conforms to the requirements of this subpart. No fissure or other defects is permitted that is probably going to weaken the completed cylinder appreciably. A fairly easy and uniform area end is required. If not originally free from this sort of defects, the surface area may be machined or otherwise dealt with to get rid of these defects.
(iii) For the objective of strain measurement, the initial pressure must be established when the specimen is less than a strain of 12,000 psig as well as strain indicator reading through needs to be set for the calculated corresponding strain.
(iii) The minimum take a look at pressure has to be maintained no less than thirty seconds and sufficiently lengthier to guarantee comprehensive growth. Any internal tension used following warmth-procedure and previous to the official examination might not exceed ninety per cent from the exam tension.
All spun cylinders and plugged cylinders must be examined for leakage by gas or air pressure following The underside is cleaned and it is totally free from all dampness subject to the following situations and limits:
The steel Employed in the construction of the cylinder need to be as laid out in table 1 of appendix A to this section. The cylinder manufacturer have to preserve a report of deliberately included alloying features.
(1) With this specification, a “lot” implies a group of cylinders successively made possessing the exact same:
(a) By appliances and techniques that may assure uniformity of finished containers; dirt and scale to be taken off as needed; no defect satisfactory that is likely to weaken the concluded container appreciably; reasonably smooth and uniform surface area finish necessary.
Varieties 304, 321 and 347 stainless-steel are licensed with proper welding treatment. A warmth of steel made beneath the requirements in desk one in this paragraph (b), Test chemical Investigation of that's a little out of the required selection, is acceptable, if satisfactory in all other respects, presented the tolerances shown in table two With this paragraph (b) are certainly not exceeded, besides as accepted by Affiliate Administrator. The following chemical analyses are approved:
(six) Other markings are approved presented They're designed in lower strain parts aside from the side wall and they are not of the dimensions and depth that should make hazardous anxiety concentrations. This sort of marks may not conflict with any DOT required markings.
(iii) For the goal of pressure measurement, the Preliminary strain reference needs to be set even though the specimen is below a strain of 12,000 psi here as well as the strain indicator reading through being set with the calculated corresponding strain.