216 R.I. Code R. 216-RICR-50-05-7.9

Current through December 26, 2024

Section 216-RICR-50-05-7.9 - Component Life Expectancy and Actual Life Expectancy Guideline

7.9.1Typical Life Expectancy

A. Source of Supply Plant

1. Structures and improvements: 35-40 years

2. Collecting/Impounding reservoirs: 50-75 years

3. Intake structures: 35-45 years

4. Wells and springs: 25-35 years

5. Galleries and tunnels: 25-50 years

6. Supply mains: 50-75 years

B. Pumping Plant

1. Structures: 35-40 years

2. Pumping equipment: 10-15 years

3. Other pumping plant: 20 years

C. Water Treatment Plant

1. Structures: 35-40 years

2. Water treatment equipment: 15-20 years

D. Transmission/Distribution

1. Structures: 35-40 years

2. Reservoirs and tanks: 30-60 years

3. Mains: 50-75 years

4. Services: 30-50 years

5. Meters: 15 years

6. Hydrants: 40-60 years

E. General Plant

1. Structures: 35-40 years

2. Furniture/equipment: 15-20 years

3. Transportation equipment: 7 years

4. Stores equipment: 10 years

5. Tools, shop equipment: 7-10 years

6. Laboratory equipment: 10-15 years

7. Power operated equipment: 10 years

8. Communication equipment: 10 years

216 R.I. Code R. 216-RICR-50-05-7.9