N.H. Code Admin. R. Lab 1201.01
"Existing boiler and pressure vessel installation" as used in RSA 157-A: 5 means any boiler or pressure vessel constructed, installed, placed in operation or contracted for before 1967.
Source. (See Revision Note at chapter heading for Lab 1200) #5371, eff 4-10-92, EXPIRED: 4-10-98 New. #7210, eff 2-28-00; ss by #9076, eff 1-24-08; ss by #11071, eff 4-11-16