IEEE 484-2019 pdf free.IEEE Recommended Practice for Installation Design and Installation of Vented Lead-Acid Batteries for Stationary Applications.
4.1 General
As with other batturiu. ti iw hizards associated with vented bttunu’ ti precautions shall be observed in handling and installation. Work on batteries shall be performed only by knowledgeable personnel with proper training., proper tools, and personal protective equipment (PPE). Reference IEEE Std 1657TM FB6l for additional information.
A job hazard analysis shall be conducted prior to starting any task. Ibis shall include a discussion with all peonneI about all the hazards associated with the planned work. The discussion shall include required PPE. The primaiy hazards include electrical shock, arc flash, and chemicals (electrolyte). Lifting and handling hazards and ptential exsure to a thermal event may also exist.
The manuIacturers safety data sheet (SDS) shall be consulted for associated hazards and first aid.
Every battery installation shall be evaluated tor itentiaI hazards. The jrc-Ilash nalvsis (c, is shown in NFPA 70E® 18101) shall l accnmphstwd dii ring tht in iti.i I dL’SiT1 aiiil inst,i lit ion Ink rnt1t n concerning these risks ‘h I by dmnntnd, .nd tht ink rmil H i-i sh,tl by po’tid nJ, ,e%ide with the battery installat km A i i i I
4.2 Electrical hazards
Because batteries are a means for storing electrical energy. any work associated with batteries or batten’ systems shall be considered work on energized electrical circuits or systems. Local codcs or regulations may establish rules on approach boundaries, insulation of tools. and/or PPE and shall be consulted prior to the start of work.
4.2.1 Shock hazard
Systems at or below 50 V nominal (including all 48 V systems) are. not considered to be shock hazards in the National Electric Code (NECR) (NFPA 70[B91) and in NFPA 70E [B10]. The NFPA 70E handbook and IEC TR 60479-5 standard [B21 both state that the current and voltage thresholds for physiological effects are at least twice the value for dc as compared to ac. Both IEC TR 60479-5 and NFPA 70E set the touch voltage threshold at 100 V. Electrically rated gloves should be available for grounded batteries between 50 V and 100 V, based on a shock hazard analysis, unless otherwise mandated by local regulations. For grounded batteries over 100 V and for locations where ex posed potentals over 100 V are within reach of personnel, insulated gloves with appropriate voltage ratings shall be worm. Note that contact with electrolyte can negatively impact the insulating capability of the gloves.
4.2.2 Ground fault hazard
Ground fault detection may be required on some dc systems depending on the type of grounding utilized. Table 1 identifies several of the most common grounding methods.IEEE 484 pdf download.