New York Codes, Rules and Regulations
Title 17 - DEPARTMENT OF TRANSPORTATION
Chapter VI - Transportation Regulations
Subchapter F - Railroad And Street Railroad Corporations
Article 2 - Safety
Part 922 - Locomotive Boilers And Steam Reservoirs
Section 922.19 - Extension of time

In the case of a boiler or steam reservoir not in continuous service, and where satisfactory proof of this is made, an extension of time may be granted for the removal of flues and lagging, removal of caps from flexible staybolts, for giving hydrostatic tests, and for washing the boiler or steam reservoir and cleaning the water glass and gauge cocks. The said extension of time is not to exceed the number of days the boiler or steam reservoir is out of service. No extension of time will be granted when the boiler or steam reservoir is out of service less than 10 consecutive days.