NATURAL GAS SYSTEM

Question 1

Natural gas is non-toxic (non-poisonous) but can cause death by suffocation if the gas displaces the air in a confined space. At _______ gas, a person is immediately incapacitated, and death will occur in a matter of minutes. (Ref: 1.4.1 NG SD)

Answer 1

75%

Question 2

The Natural Gas Detection System provides real time monitoring capability of natural gas concentration expressed in ________. (Ref: 3.7.2 NG SD)

Answer 2

%LEL

Question 3

A ________ is provided on the outlet filter section of the Natural Gas Moisture Removal Skid to allow for filter removal and filter maintenance. (Ref: 3.2.2 NG SD)

Answer 3

removable end bell

Question 4

The Emergency Shut Off Valve (HFG-358) is a 6” _____ operated butterfly valve. The (Ref: 3.1.2 NG SD)

Answer 4

pneumatically

Question 5

High-pressure natural gas is supplied from the Southwest Gas Corporation and enters the facility from the gas metering station, for volume and flow determination, located ____ of the power facility. (Ref: 2.3 NG SD)

Answer 5

east