Table 8-1.—Specifications On Supply Cylinders Capacity at normal pressure and temperature* . . . . . . . . . . . . . . . . 50 pounds Working pressure . . . . . . . . . . . . . . . . . 1,800 to 2,015 psi ICC specification . . . . . . . . . . . . . . . . . ICC3A Dimensions (approx.). . . . . . . . . . . . . Diameter, 8 1/2 inches; length, 51 inches Weight, empty . . . . . . . . . . . . . . . . . . . 110-115 pounds Outlet connection . . . . . . . . . . . . . . . . 3/4 inch * Temperature of 68°  - 70°F and atmospheric pressure. until amendment to Department of Transporta- tion (DoT) regulations, such markings will remain in use. Compressed gas cylinders, including CO₂ cylinders must not be refilled if the hydrostatic test date has expired. This date, expressed by month-year, e.g., 8-70, is stamped on the shoulder of the cylinder each time the cylinder is retested. The hydrostatic test date is considered as having expired if the latest date stamped on the cylinder precedes the current date by more than 5 years. Cylinders that do not exceed 2 inches in out- side diameter and that are less than 2 feet long are exempt from the hydrostatic retest. The hydrostatic retest date applies to multi- place life raft cylinders; if the cylinder is due for a test, discharge and disconnect the cylinder. Obtain a new cylinder from supply as a re- placement, and forward the old cylinder to an activity capable of conducting a hydrostatic test. Many nonshatterable cylinders are identified by the words NONSHATTERABLE, NON- SHAT, or SHATTERPROOF stamped (not stenciled) on the shoulder or side of the cylinder. Substitution of a “shatterable” for a “non- scatterable” cylinder is not authorized. Personnel who handle compressed gas cyl- inders must be familiar with the color coding of cylinders. Color coding is provided as a hazard warning, and should not be used by itself to identify the contents of a cylinder. In the event of conflict with other markings, or doubt as to the contents, the cylinder should be returned to the local supply activity, (non-RFI). All carbon dioxide inflation cylinders must be painted gray, and markings must be in black letters 1/4-inch high. The information must include gross weight, tare weight, weight of carbon dioxide, and date of latest recharge. Paint and stencil the cylinder as required, and ensure that all markings are included as necessary. Ensure that all carbon dioxide cylinders used for life raft inflation assemblies received from supply, except those used on the one-man rafts, have syphon tubes installed. Gently tap the inverted cylinder with a small piece of wood. If any rust or other contamination falls from the cylinder, re- ject that cylinder, and draw another cylinder from supply; repeat the contamination check. Replace the stem in the inflation assembly valve, install a new sealing washer, and thread the inflation assembly valve onto the cylinder and tighten. Inspection for deterioration of the cylinder will consist of a visual examination for the defects listed below. Cylinders with defects that approximate the physical dimensions indicated in the following list will be condemned and returned to supply. 1. Corrosion pits in a general corrosion area that exceed a depth of 1/32-inch, or isolated pits not in a general corrosion area that exceed a depth of 5/64-inch. 2. Dents that exceed a depth of 1/16-inch, or whose major diameter is more than 32 times the depth. 3. Cuts or gouges more than 1/16-inch, or whose major diameter is more than 32 times the depth. 4. Visible arc or torch burns. 5. Evidence that the cylinder has been in a fire. 6. Discernible bulges. 8-3