What are the design requirements for entry hatches on wet wells, tanks and reservoirs?
The requirements are specified in the Arizona Department of Environmental Quality's (ADEQ) Engineering Bulletin No. 10, "Guidelines for the Construction of Water Systems," Chapter 6, Section E.8.

Entry hatches shall be constructed with seals to prevent the entry of unsafe water, birds and insects into the containment vessel. Typical entry hatch designs include frames with integral curbs and frame overlapping covers with rubber or plastic seals. For more information, download the Guidelines for the Construction of Water Systems (PDF).

Show All Answers

1. Is emergency power required for ground water production facilities?
2. Is emergency power required for water distribution system facilities?
3. What are the design requirements for venting wet wells, tanks and reservoirs?
4. What are the design requirements for wet well, tank or reservoir overflows?
5. What are the design requirements for entry hatches on wet wells, tanks and reservoirs?
6. Can pump seal water be discharged to a drinking water booster pump station wet well?
7. What are the disinfection requirements for commissioning piping or equipment in potable water service?