Nebraska Administrative Code
Topic - LABOR, DEPARTMENT OF
Title 229 - DEPARTMENT OF LABOR
Chapter 20 - POWER BOILERS - NEW INSTALLATIONS
Section 229-20-011
Current through March 20, 2024
Power Boiler External Piping shall be designed, constructed, installed and inspected in accordance with the requirements of ASME B 31.1, Power Piping, and bears the ASME Certification Mark with the appropriate Designator.
A. Each steam outlet from a boiler, except safety valve and water-column connections, shall be fitted with a stop valve located as close as practicable to the boiler. When a stop valve is so located that water can accumulate, ample drains shall be provided. The drainage shall be piped to a safe location and shall not be discharged on the top of the boiler or its setting.
B. When boilers provided with manholes are connected to a common steam main, the steam connection from each boiler shall be fitted with two (2) stop valves having an ample free-blowing drain between them. The discharge of the drain shall be piped clear of the boiler setting. The stop valve arrangement shall consist of one automatic non-return valve next to the boiler and second valve of the outside screw and yoke type.
C. All other Boiler Proper piping and/or External Piping, valves, gauges, and devices shall comply with the rules as stated in ASME B 31.1 and ASME Section I.
