Wash. Admin. Code § 296-400A-021
(Only journey level plumbers holding active state of Washington certification may apply for this endorsement.) This section applies if you have never held the endorsement.
You can obtain a medical gas piping installer endorsement by completing the following requirements:
(5) Pay the endorsement issuance fee shown in WAC 296-400A-045 to the department.
* This section applies if you previously held the endorsement.
(6) If you previously held a medical gas endorsement in Washington and it has been expired for more than ninety days, you are required to take the department's medical gas examination. You can apply for the examination by completing the following requirements:
[Statutory Authority: Chapter 18.106 RCW and Uniform Plumbing Code. WSR 16-08-100, § 296-400A-021, filed 4/5/16, effective 5/16/16. Statutory Authority: RCW 19.103.040, 18.106.140, and chapter 18.106 RCW. WSR 05-11-061, § 296-400A-021, filed 5/17/05, effective 6/30/05. Statutory Authority: RCW 18.106.040, 18.106.140, 2002 c 82, and 2003 c 399. WSR 04-12-046, § 296-400A-021, filed 5/28/04, effective 6/30/04. Statutory Authority: Chapter 18.106 RCW. WSR 98-13-126, § 296-400A-021, filed 6/17/98, effective 7/20/98.]