Part II Safety (General Provisions)
F132 Steam boilers—attachments and construction.
(1)
Subject to subsection (3) of this section, every steam boiler, whether separate or one of a range,—
(a)
shall have attached to it the devices mentioned in subsection (2) of this section;
(b)
shall be provided with means for attaching a test pressure gauge; and
(c)
shall, unless externally fired, be provided with a suitable fusible plug or an efficient low-water alarm device.
(2)
The devices referred to in subsection (1) of this section are—
(a)
a suitable safety valve, separate from any stop-valve, which shall be so adjusted as to prevent the boiler being worked at a pressure greater than the maximum permissible working pressure and shall be fixed directly to, or as close as practicable to, the boiler;
(b)
a suitable stop-valve connecting the boiler to the steam pipe;
(c)
a correct steam pressure gauge connected to the steam space and easily visible by the boilder attendant, which shall indicate the pressure of steam in the boiler . . . F2, and have marked on it in a distinctive colour the maximum permissible working pressure;
(d)
at least one water gauge of transparent material or other type approved by the chief inspector to show the water level in the boiler, together, if the gauge is of the glass tubular type and the working pressure of the boiler normally exceeds F32·75 bars, with an efficient guard provided so as not to obstruct the reading of the gauge;
(e)
where the boiler is one of two or more boilers, a plate bearing a distinctive number which shall be easily visible.
(3)
Paragraph (b) of subsection (2) of this section shall not apply with respect to economisers, and paragraphs (c), (d) and (e) of that subsection and paragraphs (b) and (c) of subsection (1) of this section shall not apply with respect to either economisers or superheaters
(4)
For the purposes of the foregoing provisions of this section, a lever-valve shall not be deemed a suitable safety valve unless the weight is secured on the lever in the correct position.
(5)
Every part of every steam boiler shall be of good construction, sound material and adequate strength, and free from patent defect.