# COMAR Title 09 — Maryland Department of Labor

## Subtitle 12 — Division of Labor and Industry

### Chapter 01 — Board of Boiler Rules

#### Regulation .01-1 Incorporation by Reference.

*COMAR 09.12.01.01-1*

A. The following documents are incorporated by reference to the extent that they are referenced in this chapter:

  (1) ASME 2019 Boiler and Pressure Vessel Code, an International Code; and

  (2) National Board Inspection Code — NBIC, 2019 Edition.

B. The following documents are incorporated by reference in their entirety:

  (1) ASME B31.1 — 2018 Edition, Power Piping (American Society of Mechanical Engineers);

  (2) ASME B31.3 — 2018 Edition, Process Piping (American Society of Mechanical Engineers);

  (3) ASME CSD-1 — 2018 Edition, Controls and Safety Devices for Automatically Fired Boilers (American Society of Mechanical Engineers) as amended in §C of this regulation; and

  (4) NFPA 85, Boiler and Combustion Systems Hazards Code — 2019 Edition (National Fire Protection Association).

C. Controls and Safety Devices for Automatically Fired Boilers (CSD-1) (American Society of Mechanical Engineers).

  (1) The requirements of ASME CSD-1 in effect at the time a boiler is installed apply to:

    (a) Power boilers regardless of fuel input;

    (b) Other boilers with a fuel input of greater than 2,500,000 Btu per hour and less than 12,500,000 Btu per hour; and

    (c) Other boilers with a fuel input of 2,500,000 Btu per hour or less, except that Section CF of CSD-1 does not apply to these boilers.

  (2) The following are exempt from the requirements of ASME CSD-1:

    (a) Water heaters stamped either “H” or “HLW” and used as potable water heaters, if the water temperature is less than 210°F and the water pressure is less than 160 PSIG;

    (b) Miniature boilers, except as required in Regulation .37 of this chapter;

    (c) Kitchen equipment boilers, except as required in Regulation .38 of this chapter; and

    (d) Historical boilers.