(a) Class 4.1 materials listed in Table 148.10 of this part must—

1. (1) Be kept as cool and dry as practical before loading;
2. (2) Not be loaded or transferred between vessels during periods of rain or snow;
3. (3) Be stowed separated from foodstuffs; and
4. (4) Be stowed clear of sources of heat and ignition and protected from sparks and open flame.