api 1104 study guide for api standard 1104 welding of pipelines

Q:- Atmospheres for shielding an arc may consist of:

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1. Inert gases, active gases, or mixtures of inert and active gases
2. Only inert gases are permitted
3. Only active gases are permitted
4. No gases are permitted for welding
5. none of the above


Q:- What is the required preheat and interpass temperature for this Procedure?

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A. 225° F minimum to 107°C maximum

B. 300° F minimum to 150°C maximum

C. 150° F minimum to 107°C maximum

D. 225° F minimum to 107°C minimum

E. None of the above