Blending of hydrogen in natural gas distribution systems. Volume III. Gas blends leakage tests of selected distribution system components. Final report, June 1, 1976--April 30, 1978

Technical Report · Mon May 01 00:00:00 EDT 1978

DOI:https://doi.org/10.2172/6535751· OSTI ID:6535751

This report describes tests made using various types of joints and materials commonly installed in gas-distribution systems to determine the gas-leakage behavior when blends of hydrogen and natural gas are distributed. Twenty sample test joints, consisting of eleven cast-iron cement and jute joints, five steel joints, and four plastic joints, were tested using straight natural gas, varying blends of hydrogen with natural gas, and varying humidity levels of the gas mixture. In the case of the steel joints, the pressure level was also varied but the gas mixture was not humidified. Test results show: (1) cast-iron joints and steel joints that did not leak with natural gas did not leak with blends of up to 40% hydrogen in natural gas; (2) cast-iron joints and steel joints that had small leaks with natural gas did not leak at a higher rate with blends of up to 40% hydroge in natural gas; (3) cast-iron joints that had large leaks with natural gas showed a detectable increase in leakage as the hydrogen level in the gas blend increased; (4) efforts to determine if the permeability of polyethylene tubing increases with increasing concentrations of hydroge in natural gas, and with aging of the plastic, were inconclusive; and (5) there was no preferential leakage of hydrogen in any of the joints tested using blends with up to 40% hydrogen in natural gas.

• Research Organization: Public Service Electric and Gas Co., Newark, NJ (USA)
• DOE Contract Number: EY-76-C-02-2925
• OSTI ID: 6535751
• Report Number(s): CONS-2925-3
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
29 ENERGY PLANNING
POLICY AND ECONOMY
03 NATURAL GAS
HYDROGEN
MIXTURES
RESOURCE POTENTIAL
NATURAL GAS
NATURAL GAS DISTRIBUTION SYSTEMS
LEAK TESTING
CEMENTS
JOINTS
MIXING
PERMEABILITY
PLASTICS
POLYETHYLENES
STEELS
TESTING
ALLOYS
BUILDING MATERIALS
CRYOGENIC FLUIDS
DISPERSIONS
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
POLYOLEFINS
080600* - Hydrogen- Industrial & Commercial Use- (-1989)
295000 - Energy Planning & Policy- Hydrogen & Synthetic Fuels
294003 - Energy Planning & Policy- Natural Gas
032000 - Natural Gas- Transport
Handling
& Storage