S9407-AB-HBK-010 Datasheet, PDF (224/276 Pages) Glenair, Inc. – HANDBOOK OF SHIPBOARD ELECTROMAGNETIC SHIELDING PRACTICES

S9407-AB-HBK-010, Rev. 2
FIGURE 2. Typical braid section.
4.6.4 Tightness of covering. For Type 1 and Type 2 conduit the wire braid shall have a tight fit over
the tubing. For Type 2 conduit the rubber jacket shall have a tight fit over the wire braid.
4.6.5 Watertightness. Watertight integrity shall be determined by a pressure test on bare tubing,
i.e., conduit without braid and jacket coverings. This test shall be performed on each and every length
manufactured under this specification. The tubing ends shall be capped and sealed. The capped
tubing shall then be pressurized internally to 15 psig with air and fully immersed in water. There shall
be no visible air leakage from the tubing.
4.6.6 Bend radius. The sample for the bend-radius test shall be 4 feet long for all conduit less than
2 inches in diameter, 6 feet long for 2-inch and 2-1/2 inch diameter, and 8 feet long for 3-inch
diameter conduit. The braid ends shall be brazed to the tubing as in 3.6.8. Type 2 conduit samples
shall be tested with their rubber jacket. One end of the sample shall be fastened tangentially to a
cylindrical mandrel that is mounted with its axis horizontal. See figure 3a. The radius of the mandrel
shall be as specified in table V. The conduit sample shall hang vertically, and the test load specified in
table V shall be attached to its lower end. The mandrel shall be rotated 270 degrees to the position
shown in figure 3b. The conduit shall be in contact with the mandrel over a typical 180-degree sector
(see figure 3b.) Failure of the conduit to come within 1/16 inch of the mandrel at any point along its
curvature over the 180-degree sector shall constitute cause for rejection.
CHANGE 1 of Revision 2
D-10