(a)

1. (1) Prior to performing any service work, a service tag shall be placed on the riser of the system being serviced and such tag shall be updated as the system is serviced.
2. (2) This tag shall remain until further service work is performed and another service tag is placed on the system.

(b) A licensed fitter shall affix a service tag after performing work on any existing system, whether the alterations made are due to:

1. (1) Demolition;
2. (2) Addition;
3. (3) Correction of deficiencies or impairments; or
4. (4) Other service work.