Electrical · California
Arc Flash Safety & PPE
Prepared for Demo Company LLC · California
Verbatim excerpt · more in the PDF
SECTION 9
Arc Flash Safety & PPE
California carries its own flame and electric-arc duties, and they sit in two different places with two different conditions. This section states both, and does not present a consensus standard as though it were California law.
9.1 The apparel duty for energised work under the Low-Voltage Electrical Safety Orders
The eighth condition for energised work is an apparel duty: each employee who is exposed to the hazards of flames or electric arcs wears apparel that, when exposed to flames or electric arcs, does not increase the extent of injury that would be sustained by the employee; and that condition prohibits clothing made from acetate, nylon, polyester and rayon, either alone or in blends, unless the employer can demonstrate that the fabric has been treated with flame retardant (8 CCR § 2320.2). Title 8 requirement
"(8) Each employee who is exposed to the hazards of flames or electric arcs wears apparel that, when exposed to flames or electric arcs, does not increase the extent of injury that would be sustained by the employee. This subsection prohibits clothing made from the following types of fabrics, either alone or in blends, unless the employer can demonstrate that the fabric has been treated with flame retardant: acetate, nylon, polyester, and rayon." (8 CCR § 2320.2)
That condition applies wherever work is to be performed on exposed energised parts of equipment or systems, because it is one of the conditions the energised-equipment section states for such work (8 CCR § 2320.2). The subsection names no fabric that must be used and no arc rating; it states an outcome and a prohibition. Demo Company LLC's route to the outcome is to issue arc-rated work shirts and trousers as the standard uniform for energised work, and to prohibit on that work any garment, including base layers, shirts, jackets, rainwear, liners, hoods and high-visibility vests, made wholly or partly of acetate, nylon, polyester or rayon, unless Demo Company LLC can demonstrate that the fabric has been treated with flame retardant (8 CCR § 2320.2(a)(8)); an arc rating alone is not treated as that demonstration. compliance method — chosen by Demo Company LLC
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9.5 Arc rating, and the five body-coverage exceptions
The employer ensures that each employee exposed to hazards from electric arcs wears protective clothing and other protective equipment with an arc rating greater than or equal to the heat energy estimated under the assessment subsection whenever that estimate exceeds 2.0 cal/cm², and that protective equipment covers the employee's entire body, subject to five exceptions (8 CCR § 2320.11). Title 8 requirement
- Arc-rated protection is not necessary for the employee's hands when the employee is wearing rubber insulating gloves with protectors or, if the estimated incident energy is no more than 14 cal/cm², heavy-duty leather work gloves with a weight of at least 407 gm/m² (12 oz/yd²) (8 CCR § 2320.11).
- Arc-rated protection is not necessary for the employee's feet when the employee is wearing heavy-duty work shoes or boots (8 CCR § 2320.11).
- Arc-rated protection is not necessary for the employee's head when the employee is wearing head protection meeting Section 3381 if the estimated incident energy is less than 9 cal/cm² for exposures involving single-phase arcs in open air or 5 cal/cm² for other exposures (8 CCR § 2320.11).
- The protection for the employee's head may consist of head protection meeting Section 3381 and a faceshield with a minimum arc rating of 8 cal/cm² if the estimated incident-energy exposure is less than 13 cal/cm² for exposures involving single-phase arcs in open air or 9 cal/cm² for other exposures (8 CCR § 2320.11).
- For exposures involving single phase arcs in open air, the arc rating for the employee's head and face protection may be 4 cal/cm² less than the estimated incident energy (8 CCR § 2320.11).
The dates the section states. The requirement to make reasonable estimates of incident energy commenced October 1, 2018; the requirement to ensure that the outer layer of clothing worn by an employee is flame-resistant when the estimated incident heat energy exceeds 2.0 cal/cm² commenced October 1, 2018; and the requirement to ensure that each employee exposed to hazards from electric arcs wears the required arc-rated protective equipment commenced October 1, 2018 (8 CCR § 2320.11). All three are in force. Title 8 requirement
Company policy. Demo Company LLC does not use exceptions 3, 4 or 5 to reduce head and face protection below a full arc-rated hood on work this section reaches. company rule — beyond Title 8