NPFC - BB-H-1168
HELIUM, TECHNICAL
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| Organization: | NPFC |
| Publication Date: | 15 November 2010 |
| Status: | active |
| Page Count: | 8 |
scope:
This specification covers two technical grades of gaseous helium (see 6.1).
intended Use:
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.
Document History
BB-H-1168
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.
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...
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