Grass Valley K2 Dyno Service Manual - Manual (Page 22)

22 K2 Dyno Replay Controller Service Manual 02 February 2012
Safety Summaries
For example, at 10% - 20% RH a person walking across a carpeted floor can develop
35kV; yet when the relative humidity is increased to 70% - 80%, the person can only
generate 1.5kV.
Static is generated as personnel move (or as equipment is moved) across a floor’s
surface. Carpeted and waxed vinyl floors contribute to static build up.
Work Surfaces
Painted or vinyl-covered tables, chairs, conveyor belts, racks, carts, anodized
surfaces, plexiglass covers, and shelving are all static generators.
Equipment
Any equipment commonly found in an ESD work area, such as solder guns, heat guns,
blowers, etc., should be grounded.
Materials
Plastic work holders, foam, plastic tote boxes, pens, packaging containers and other
items commonly found at workstations can generate static electricity.
Grounding Requirements for Personnel
The information in this section is provided to assist you in selecting a grounding
method. This information is taken from ANSI/ESD S20.20-2007 (Revision of ANSI/
ESD S20.20-1999).
Product Qualification
Product qualification is normally conducted during the initial selection of ESD
control products and materials. Any of the following methods can be used: product
specification review, independent laboratory evaluation, or internal laboratory
evaluation.
Compliance Verification
Personnel Grounding
Technical Requirement Test Method Required Limits
Wrist Strap System* ANSI/ESD S1.1 (Section 5.11) < 3.5 x 10
7
ohm
Flooring / Footwear System –
Method 1 ANSI/ESD STM97.1 < 3.5 x 10 7 ohm
Flooring / Footwear System –
Method 2 (both required) ANSI/ESD STM97.1 < 10 9 ohm
ANSI/ESD STM97.2 < 100 V
Personnel Grounding
Technical Requirement Test Method Required Limits
Wrist Strap System* ESD TR53 Wrist Strap Section < 3.5 x 10
7
ohm
Flooring / Footwear System –
Method 1 ESD TR53 Flooring Section and
ESD TR53 Footwear Section < 3.5 x 10 7 ohm