Describe the procedures for testing for a gas leak, using a soap solution.

Description should include the following steps:

• Locate the gas meter and follow the entry lines to all exposed pipes.
• Ventilate the enclosed area.
• Turn off all electrical appliances.
• Mix a soap solution.
• Beginning with the outermost union, soap the first joint thoroughly.
• Mark each leaking joint with chalk.

Process/Skill Questions:

• What are the relevant safety precautions/procedures for testing for a gas leak, using a soap solution?
• What causes a pipe joint to leak?
• What are some common fittings used in a black iron pipe system?
• What tools are required for working with black iron pipe?