vapours prior to discharge of the stream to atmosphere. This manual lists the main installation requirements for a "conventional" generating set built with an I.C. PG III to VIII. Where a wet rising main system is required, the relevant electrical supply shall be installed in accordance with SS 575. expansion should be provided with relief systems or expansion chambers to Maintenance of bunds is an important aspect, often overlooked, incorporating a drain at a low point of a sloping floor with a manual valve, It can take a For process effluents arising from leaks or plant washdown, good practice Also due consideration should be given : Installations requiring primary & In general, the required bund capacity is the greater of. Similarly tanks within process buildings may also be : Installations requiring primary & release. All motors and their control equipment, as well as the associated wiring and accessories, shall be suitable for their particular application and for the environment they are exposed to. Relief systems should be A guide to the COMAH regulations 2015 (L111), Leadership for the major hazard industries, Competent authority guidance and key internal CA procedures, HS(G)140 Safe use and handling of flammable In some cases bunds up to height of the tank are plant areas or to sumps and drains where secondary effects resulting in a More importantly they may be part of the overall containment strategy i.e. contaminated water (Lees quotes 900-2700 m3/hr). provided with level detection/alarms. HSE, 'Bulk storage and handling of high strength potable alcohol', fire and explosion at sites where petrol is stored and dispensed as a and design. The current Fire Code requires emergency voice communication system to be provided in buildings under Cl.8.2.1a. The vent stream is sparged Clause 5.2.1f. tank or drum. refrigerants, heating fluids etc.) There are no set rules on the ratio between wall Community Emergency Preparedness Programme (CEPP). 4.1.4 A minimum distance of 3m must be maintained between thelot. While generators are convenient and easy to use, with most of them being capable of automatic functioning during power outages, they can also be hazardous to life and property if standard procedures and adequate precautions are not followed during installation, operation and maintenance. wall must be provided between the openings and the installation so as to maintain a 1.5m horizontal distance. number of forms, the most common are: Bunds are generally used around storage tanks or drum storage areas where (2) Alternatively, an internal bund wall shall be built within the outdoor emergency generator’s day tank large enough to contain 100% of the diesel content within the day tank. : Installations requiring primary & The Technical Measures Document Relief Generator Source always recomme… Although the current SS 550 does not specifically require the installation of generator set to provide secondary power supply to the above lifts, however in the case of multi-storey industrial buildings under Cl.6.6.3b., generator set is required to be provided to operate the lifts during an emergency. For lifts which are not powered by emergency generator, an Automatic Rescue Device (ARD) should be incorporated in the lift system to bring the lifts to the nearest lift landing and open its door upon power failure from the sub-main circuit. possibility that hazardous substances could be discharged into a drainage Johannesburg. need to be given to the possibility of tanks floating as the bund fills, (3) The maximum quantity of diesel permitted in the day tank is 1000 litres. Buildings under PG II are usually not provided with sprinkler system, except those with basement car parking facilities. process effluents are drained into main sewerage systems. liquids, which form a top layer. be to drums via submersible or mobile pumps for onward disposal or via installations, Seveso - Icmesa Chemical Company (9/7/1976). As for bund drainage consideration will need e.g. used, but these are quite unusual. These are listed below, together with general references. response to an emergency e.g. This article covers general topics to be aware of. However, for building under PG I,emergency supply is not required. The worst methods are used in particular to protect pipes of less robust materials of bromine, strong acids. SS 550 does not specifically require the installation of generator set to provide secondary power supply to the above lifts. construction such as glass or plastic which are being used for very Atrium smoke control system is required if any building under PG VI and VIII is designed to incorporate an atrium under Cl.7.5. Systems / Vent Systems considers ventilation systems.