Good stuff Dave, here are some Federal Requirements for fuel systems

This is a good thread, getting better, and I thought I'd take your lead and pop in some of the regs, so this thread can be used for reference later on. The following is intended for the boat manufacturing industry, but it is also a great safety and compliance guide for us too.

Regards, Paul






Fuel Systems, Equipment Standards

FEDERAL LAW

183.540 - Hoses: Standards and markings

(a) “USCG Type A1” hose means hose that meets the performance requirements of:

(1) SAE Standard J1527 DEC85, Class 1 and the fire test in Sec.183.590; or
(2) Underwriters’ Laboratories, Inc. (UL) Standard 1114.

(b) “USCG Type A2” hose means hose that meets the performance requirements of SAE Standard J1527 DEC85, Class 2 and the fire test in Sec 183.590;

(c) “USCG Type B1” hose means hose that meets the performance requirements of SAE Standard J1527 DEC85, Class 1.
(d) “USCG Type B2” hose means hose that meets the performance requirements of SAE Standard J1527 DEC85 Class 2.

NOTE: SAE Class 1 hose has a permeation rating of 100 grams or less fuel loss per square meter of interior surface in 24 hours.

SAE Class 2 hose has a permeation rating of 300 grams or less fuel loss per square meter of interior surface in 24 hours.



The permeation rating of the hose refers to the quantity of fuel which will pass through the walls of the hose out into the boat when the hose is filled with fuel. You could think of this as a slow leak. Fortunately, the fuel vapors formed by this low level of permeation are readily dissipated by the ventilation system.

You may use USCG Type A1 hose for any application. In some cases, you may find the difference in price between A1, A2, B1, and B2 does not justify stocking all four types.


FEDERAL LAW

183.540 - Hoses: Standards and markings

(e) Each “USCG Type A1,” “USCG Type A2,” “USCG Type B1,” and “USCG Type B2” hose must be identified by the manufacturer by a marking on the hose.

(f) Each marking must contain the following information in English:

(1) The statement “USCG Type (insert A1 or A2 or B1 or B2).”
(2) The year in which the hose was manufactured.
(3) The manufacturer’s name or registered trademark.

(g) Each character must be block capital letters and numerals that are at least one-eighth inch high.

(h) Each marking must be permanent, legible, and on the outside of the hose at intervals of 12 inches or less.



The use of a fire sleeve does not automatically qualify a hose as “USCG Type A.” Hose and sleeve must be properly matched. Hose and sleeve suppliers should be consulted to obtain a certification that the hose-sleeve combination will qualify as “USCG Type A.”

All lettering, numerals, and trademarks used on hose must be at least one-eighth inch high. Markings must be permanent, legible and on the outside of the hose. Hose markings must be repeated along the length of the hose so there is a complete marking within every 12-inch section of the hose. Short pieces of hose which do not show the complete label are permitted to be used, provided it is shown that the longer pieces of the same hose and the inventory of hose comply.