Enhancing Interpretability of Data-Driven Fault Detection and Diagnosis Methodology with Maintainability Rules in Smart Building Management

Table 7

Plumbing & Sanitary Systems - General Pumping.

Problem	Design	Construction	Maintenance
Water supply — General defects; Leaky joint wetting the floor; Ceiling damaged by pipe leakage due to haphazard pipe laying	Adopt the pipe sizing requirements based on hydraulic design and pump performance. Provide allowance for head loss, and frictional loss due to internal roughness, loss at fittings, turbidity, surge and pumping facility. Do not oversize piping as slow flow will cause stagnation. Specify standard fittings such as tees, elbows, etc. in accordance with BS 7291-1, BS EN 598, BS EN 545 or equivalent.	The installation of water fittings should comply with the requirements as stipulated in SS 636 pr BS 8558. It is presupposed that it is also in compliance with applicable statutory and regulatory requirements.; Fittings that are fabricated by welding together segmented pieces are not recommended. Avoid haphazard pipe laying.; It is presupposed that all water tanks, pipes and fittings are in compliance with applicable statuary and regulatory requirements.	Perform thorough investigation to check compliance with SS 636 and BS8554. Monthly inspection of water flow rate and pressure should be carried out, and position and functioning of valves. Maintenance inspections of the pipe installation should be carried out and identify/rectify physical defects such as broken pipe braces, dents, or leaks in accordance with BS 8558, BS EN 806-5 or equivalent.
Leaky joints in inaccessible areas; Leaking pipe above ceiling; Leaky water pipes in the ceiling	Sufficient distance (>400 mm) should be maintained from structure or other services running parallel to each other, for easy maintenance and to avoid interference or damage.; Pipes should be of adequate strength and durability, and adequately supported in accordance with BS 8558, SS 636 or equivalent.	Ensure that the pipes and fittings are stored and installed in accordance with manufacturer’s instructions.; Prevent any interior contamination. If contamination occurs, clean before installation.; Take special care when joining two dissimilar materials.	Perform routine monitoring of piping system and check for any possible water seepage through the building fabric in accordance with BS 8558 : 2, BS EN 806-5 or equivalent.; Repair the pipe joints properly using the correct jointing method. Tighten valve stems by replacing/fitting any missing gasket/washer.