TB-9066 Page 1 of 2
© 2016 DESCO INDUSTRIES, INC.
Employee Owned
SCS - 926 JR Industrial Drive, Sanford, NC 27332 • (919) 718-0000 • Website: StaticControl.com
Static Control Smocks
Grounding, Testing and Maintenance
Description
SCS smocks are designed to be antistatic, low
tribocharging, and create a Faraday Cage around the
torso and arms of the wearer to protect ESD susceptible
items from electrostatic fields generated by charges on the
operator’s clothing. Static control garments are intended
to attenuate electrostatic fields that may be present on
personnel clothing. Smocks meet the requirement for
Groundable Static Control Garment System per ANSI/ESD
S20.20 required limit of < 3.5 x 10
7
ohm Rtg tested per
ANSI/ESD STM2.1 and ESD TR53.
“While a person may be grounded using a wrist strap or
other grounding methods, that does not mean that insulative
clothing fabrics can dissipate a charge to that person’s
skin and then to ground. Personnel clothing usually is
electrically separate or isolated from the body.” “Groundable
Static Control Garment System, Garments that are used to
establish the primary ground path for a person shall provide
a resistance of less than 35 megohms from the person to
the groundable point of the garment.”[ESD TR20.20-2008
section 5.3.13 Garments]
Smocks are constructed of a lightweight dissipative material
which made from texturized polyester and a minimum of
9% carbon nylon monofilament. The conductive nylon fibers
are woven in a chain-link design throughout the material,
providing continuous and consistent charge dissipation.
All of the seams in the smocks are designed to maintain
electrical continuity from panel to panel and from sleeve to
sleeve in accordance with the ESD Association Garment
Standard, ESD-STM2.1.
“After verifying that the garment has electrical conductivity
through all panels, the garment should be electrically
bonded to the grounding system of the wearer so as
not to act as a floating conductor.” [ESD TR20.20-2008
Made in the
United States of America
COIL CORD TO GROUND
NO WRISTBAND
NECESSARY
Figure 1. SCS Smock Jacket with Conductive Knit Cuffs.
section 5.3.13 Garments] The conductive fabric in smock
is a conductor. If not grounded, the smock can become an
isolated charged conductor. If not grounded via a wrist strap
coil cord, ground the ESD garment using ESD footwear to
ESD flooring.
Smocks incorporate a “hip-to-cuff” grounding feature which
allows for hands-free grounding with no cord attached
to the operator’s wrist. This feature allows connection of
a ground cord to a 4mm snap stud on the hip. A seam
of carbon-suffused threads provides a secure and direct
electrical connection from the snap stud on the hip to
conductive elastic cuffs. Smocks ground the person when
used in this manner. Standard touch testing or continuous
monitoring can be used to test the “hip-to-cuff” function.
Smocks are available in the following styles and sizes:
JACKETS WITH CUFFS
SIZE BLUE GRAY CHEST SLEEVE
XSmall 770010 770020 30”-32” 33 3/4”
Small 770011 770021 34”-36” 34”
Medium 770012 770022 38”-40” 34 3/8”
Large 770013 770023 42”-44” 35”
XLarge 770014 770024 46”-48” 35 1/2”
2XLarge 770015 770025 50”-52” 35 1/2”
3XLarge 770016* 770026* 54”-56” 37 1/2”
4XLarge 770017* 770027* 58”-60” 36 1/2”
5XLarge 770018* 770028* 62-64” 36”
6XLarge 770019* 770029* 66”-68” 36”
*Build To Order (BTO) items
Note: BTO terms will apply to BTO items
Installation
Follow the directions below for proper installation and
grounding of the smock.
USER GUIDE TB-9066
YES!
YES!NO! NO!
Figure 3. Proper installation of smock wearer’s body
