NPFC - BB-H-1168
HELIUM, TECHNICAL
inactive
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| Organization: | NPFC |
| Publication Date: | 9 May 1977 |
| Status: | inactive |
| Page Count: | 5 |
scope:
This specification covers two technical grades of gaseous helium (see 6.1).
Helium shall be of the following grades as specified (see 6.2):
Grade A - 99.995 percent helium
Grade B - 97.5 percent helium
intended Use:
Grade A helium is intended for use as a shielding gas in are welding. Grade B helium is intended for use as a buoyant in lighter-than-air craft such as weather balloons.
Document History
November 15, 2010
HELIUM, TECHNICAL
Grade A helium is intended for use as a shielding gas in arc welding. Grade B helium is intended for use as a buoyant in lighter-than-air craft such as weather balloons.
August 3, 2000
HELIUM, TECHNICAL
Grade A helium is intended for use as a shielding gas in arc welding. Grade B helium is intended for use as a buoyant in lighter-than-air craft such as weather balloons.
BB-H-1168
May 9, 1977
HELIUM, TECHNICAL
This specification covers two technical grades of gaseous helium (see 6.1).
Helium shall be of the following grades as specified (see 6.2):
Grade A - 99.995 percent helium
Grade B - 97.5 percent...