§183.516. Cellular plastic used to encase fuel tanks.
33 C.F.R. § 183.516
Cellular plastic used to encase metallic fuel tanks must—
Not change volume by more than five percent or dissolve after being immersed in any of the following liquids for 24 hours at 29 °C:
Reference fuel B ASTM D 471 (incorporated by reference, see § 183.5).
No. 2 reference oil of ASTM D 471 (incorporated by reference, see § 183.5).
Five percent solution of trisodium phosphate in water; and
Not absorb more than 0.12 pound of water per square foot of cut surface, measure under Military Specification MIL P-21929B.
Non-polyurethane cellular plastic used to encase metallic fuel tanks must have a compressive strength of at least 60 pounds per square inch at ten percent deflection measured under ASTM D 1621 (incorporated by reference, see § 183.5), “Compressive Strength of Rigid Cellular Plastics”.
Polyurethane cellular plastic used to encase metallic fuel tanks must have a density of at least 2.0 pounds per cubic foot, measured under ASTM D 1622 (incorporated by reference, see § 183.5), “Apparent Density of Rigid Cellular Plastics.”
Notes, amendments, and revision history
Amendments
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 77-98, 42 FR 36253, July 14, 1977; CGD 81-092, 48 FR 55737, Dec. 15, 1983; USCG-2000-7223, 65 FR 40059, June 29, 2000]
Source
Source: CGD 74-209, 42 FR 5950, Jan. 31, 1977, unless otherwise noted.
Authority
Authority: 46 U.S.C. 4302; Pub. L. 103-206, 107 Stat. 2439; and Department of Homeland Security Delegation No. 0170.1, para. II, (92)(b). Subpart E is also authorized by Pub. L. 114-120, 130 Stat. 27
Source
Source: CGD 72-61R, 37 FR 15782, Aug. 4, 1972, unless otherwise noted.
Amendments
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 77-98, 42 FR 36253, July 14, 1977; CGD 81-092, 48 FR 55737, Dec. 15, 1983; USCG-2000-7223, 65 FR 40059, June 29, 2000]