Section 408.4109. Classes of boiler installer's licenses.

(1) A class 1B installer's license qualifies a person to install a low- pressure boiler that does not exceed a firing rate of 1,000,000 BTU per hour as certified by the boiler manufacturer. For a class 1B license, the sum of all modules in a modular boiler shall not exceed a firing rate of 1,000,000 BTU per hour as certified by the boiler manufacturer.

(2)     A class 2B installer's license qualifies a person to do all of the following:

(a)     Install a low-pressure boiler of any capacity or firing rate.

(b)     To perform work covered by a class 1B license.

(3)     A class 3B installer's license qualifies a person to do all of the following:

(a)      Install a power boiler that has a capacity  of  not   more  than  5,000 pounds of steam per hour.

(b)      Install or replace non-boiler external piping as defined by ASME  code B31.1 and R 408.4032.

(c)     Perform work covered by a class 2B license.

(4)     A class 4B installer's license qualifies a person to do all of the following:

(a)      Install a boiler that has a capacity of not more than  300,000  pounds of steam per hour.

(b)      Install or replace non-boiler external piping as defined by ASME  code B31.1 and R 408.4032.

(c)     Perform work covered by a class 3B license.

(5)     A class 5B installer's license qualifies a person to do all of the following:

(a)      Install a boiler of  any  capacity   or  firing  rate.     Exception:      a nuclear heat source boiler.

(b)      Install or replace non-boiler external piping as defined by ASME  code B31.1 and R 408.4032.

(c)     Perform work covered by a class 4B license.

(6)     A class 6B installer's license qualifies a person to install a boiler that utilizes a nuclear heat source or its parts, appurtenances,  or   system components.  Before a license is issued, an applicant for a class 6B license shall submit evidence of both of the following:

(a)      Familiarity with and knowledge of all federal rules and regulations regarding the installation of a boiler that has a nuclear heat source.

(b)       Employment by a company in possession of a valid ASME nuclear code symbol applicable to the portions of any nuclear boiler system that the company proposes to install.

(7)       A class P license qualifies a person to install or replace non-boiler external piping or repair non-boiler external piping as defined by ASME code B31.1 and R 408.4032.

History: 1979 AC; 1995 AACS; 1998-2000 AACS; 2002 AACS; 2009 AACS.