Section 56: Steam boilers – attachments and construction

56. Steam boilers – attachments and construction (1) Every part of every steam boiler shall be of good construction, sound material, adequate strength and free from patent defect and shall conform to the specifications of the Mauritius Standards Bureau, if any. O2 – 39 [Issue 1] Occupational Safety and Health Act (2) Subject to subsection (4), every steam boiler, whether separate or one of a range shall— (a) have attached to it the devices specified in subsection (3); (b) be provided with means for attaching a test pressure gauge; and (c) unless externally fired, be provided with a suitable fusible plug or an efficient low-water alarm device or both where reasonably practicable. (3) The devices referred to in subsection (2) (a) are— (a) a suitable safety valve, separate from and incapable of being isolated by 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, which shall indicate the pressure of steam in the boiler and have marked on the face of the gauge in a distinctive colour the maximum permissible working pressure; (d) at least one water gauge of transparent material to show the water level in the boiler, and if the gauge is of the glass tubular type and the working pressure of the boiler normally exceeds 275 kilopascals fitted with an efficient guard which does not obstruct the reading of the gauge. (4) (a) Subsection (3) (b) shall not apply to economisers. (b) Subsections (2) (b) and (c) and (3) (c) and (d) shall not apply to economisers and super heaters. (5) A lever-valve shall not be deemed a suitable safety valve unless the weight is secured on the lever in the correct position.