WAC 296-400A-135   How does the department enforce trainee supervision?  (1) A journeyman plumber on each and every commercial job site shall supervise either a residential specialty plumber or a domestic pump specialty plumber with a current plumber trainee card or trainee with a current plumber trainee card.

     (a) The ratio on each commercial site shall be not more than one residential plumber or one plumber trainee working on any one job site for every certified journeyman plumber working as a journeyman plumber on that site.

     (b) The time of supervision shall be a minimum of seventy-five percent of the time spent on each and every job site.

     (2) A journeyman plumber or residential specialty plumber on each and every residential specialty job site shall supervise a plumber trainee with a current plumber trainee card.

     (a) The ratio on each residential specialty job site shall be not more than two trainees with current plumber trainee cards on any one residential specialty job site for every certified journeyman plumber or residential specialty plumber on that site.

     (b) The time of supervision shall be a minimum of seventy-five percent of the time spent on each and every job site.

     (3) A journeyman plumber with current medical gas endorsement may supervise either a residential specialty plumber with a current trainee card or a plumber trainee with a current trainee card.

     (a) The residential specialty plumber or the plumber trainee has to have successfully completed or is currently enrolled in an approved medical gas piping installer training course approved by the department.

     (b) The residential specialty plumber or other plumber trainee is under the direct supervision of a certified medical gas journeyman plumber on one-to-one ratio for one hundred percent of the time on each and every medical gas site.

     (4) A backflow specialty plumber, a journeyman plumber or a residential specialty plumber shall supervise a backflow trainee to do maintenance and repair work on every backflow assembly on potable water systems, inside every commercial or residential building. The ratio shall be one-to-one for one hundred percent of the time on every job site.

     (5) A journeyman plumber or appropriate domestic pump specialty plumber on each and every domestic pump job site shall supervise a plumber trainee with a current plumber trainee card.

     (a) The ratio on each domestic pump job site shall be not more than two trainees with current plumber trainee cards on any one residential specialty job site for every certified journeyman plumber or appropriate domestic specialty plumber on that site.

     (b) The time of supervision shall be a minimum of seventy-five percent of the time spent on each and every job site. Restricted domestic pump specialty trainees who have completed at least seven hundred twenty hours of on-the-job training and passed the competency examination required by WAC 296-400A-020 may work unsupervised for the remainder of the time required for work experience to become a restricted domestic pump specialty plumber.



[Statutory Authority: RCW 18.106.040, 18.106.140. 06-24-040, § 296-400A-135, filed 11/30/06, effective 12/31/06. Statutory Authority: RCW 18.106.040, 18.106.140, 2002 c 82, and 2003 c 399. 04-12-046, § 296-400A-135, filed 5/28/04, effective 6/30/04.]