Section 28-27-4 - "Master pipefitting contractor," "master refrigeration contractor," "master sheet metal contractor" and "master fire protection sprinkler contractor" defined(a) "Fire protection sprinkler contractor" means a person having a regular place of business and who, by himself or herself or a journeyperson sprinkler fitter in his or her employ, performs fire protection sprinkler systems work.(b) "Master pipefitting contractor" means a person having a regular place of business and who, by him or herself, or a journeyperson pipefitter in his or her employ, performs pipefitting work subject to the provisions of this chapter and the rules and regulations and licensing criteria promulgated under this chapter.(c) "Master refrigeration contractor" means a person having a regular place of business and who, by him or herself or a journeyperson refrigeration technician in his or her employ, performs refrigeration/air conditioning work.(d) "Master sheet metal contractor" means a person having a regular place of business and who, by him or herself or a journeyperson sheet metal worker in his or her employ, performs sheet metal work.P.L. 1990, ch. 102, §2; P.L. 1999 , ch. 330, § 1; P.L. 1999 , ch. 437, § 1.