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NSI Z223.1 Gas Piping Installation 54-63 Revisions

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NSI Z223.1 Gas Piping Installation 54-63 Revisions

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Questions and Answers

According to the code, which of the following statements is true about capping outlets?

Capping outlets is only required for certain types of appliances.

All outlets, including valves, must be capped immediately after installation. (correct)

Outlets do not need to be capped if they are connected to an appliance.

Outlets only need to be capped if they will not be used for an extended period.

What is the exception for laboratory appliances regarding capping outlets?

There is no exception for laboratory appliances regarding capping outlets.

Laboratory appliances require special explosion-proof caps.

Laboratory appliances must have double-capped outlets.

Laboratory appliances do not require capped outlets. (correct)

Which of the following is permitted as an alternative to capping outlets?

Capping the outlet with a non-threaded cap.

Leaving the outlet uncapped if it will be used within a week.

Using a standard ball valve to cap the outlet.

Using a listed quick-disconnect device with integral shutoff. (correct)

What is required for appliance shutoff valves installed in fireplaces used for solid fuel burning?

They must be removed and the piping capped gastight. Signup and view all the answers

Where must an accessible gas shutoff valve be provided according to the code?

Upstream of each gas pressure regulator. Signup and view all the answers

What requirement is given for main gas shutoff valves controlling multiple gas piping systems?

They must be readily accessible for operation and protected from physical damage. Signup and view all the answers

What is required for gas piping systems to be readily identified?

They shall be marked with a metal tag or other permanent means attached by the installing agency. Signup and view all the answers

In multiple-tenant buildings supplied through a master meter or without readily accessible meters/regulators, what is required?

An individual shutoff valve for each apartment or tenant line at a generally accessible point. Signup and view all the answers

What is required for each building in a common gas system serving multiple buildings?

Shutoff valves installed at each building. Signup and view all the answers

How should emergency shutoff valves be identified?

They should be plainly marked as such and their locations posted as required by the authority having jurisdiction. Signup and view all the answers

What is required for laboratory spaces containing multiple gas outlets?

A single shutoff valve through which all gas outlets are supplied, located within or adjacent to the laboratory. Signup and view all the answers

What is prohibited within the interior of gas piping or fittings?

Devices that reduce the cross-sectional area or obstruct the free flow of gas, unless accounted for in the system design. Signup and view all the answers