Dear Expert,
Per ANSI/ESD S20.20 section 8.2 Personnel Grounding.
All personnel shall be bonded or electrically connected to the selected grounding/equipotential bonding system when handling ESDS items. The personnel grounding method(s) shall be selected from Table 2.
When personnel are seated at ESD protective workstations, they shall be connected to the selected grounding/equipotential bonding system via a wrist strap system.
For standing operations, personnel shall be grounded via a wrist strap or by a footwear/flooring system meeting the requirements of Table 2.
When garments are used to achieve personnel grounding, it shall be documented in the ESD control program plan. It shall also meet the groundable static control garment system resistance requirements defined in Table 2 and the groundable static control garment in Table 3.
Could you please advise below.
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When working while sit on ESD chair, we need to wear wrist strap all of time.
My understanding: That mean person grounded via wrist strap not ESD chair. Is it correct? -
While standing working, we need to select one choice for personnel ground, between wrist strap or ESD shoes. Is it correct?
My understanding: When select ESD shoes choice, while working with ESDS items such as PCBA or IC and sometime moving PCBA between two processes by person, Is there the ESD risk . -
When use the groundable smock and while sitting working, Do we need to ground via wrist strap and garment groundable or can select one?
Thank you in advance.