Many wireless operators, tower sites and even state
entities have begun to utilize specific policies when installing
RFR safety signs on their sites. These policies are based on the
OSHA 1910.145 standard and recent FCC and OSHA enforcements such
Anytime a worker is in an area above the written standard, they are in danger of potential RF exposure. Workers must know before they go into an area of a potential existing RF hazards and must be warned so they can work safely around the hazard. This also requires a working site safety plan and proper lockout/tag out procedure along with safety signage.
Signage can only be installed after a thorough RF assessment has been conducted to determine what areas should be categorized as “Above Controlled limits” or “Above Uncontrolled limits” areas. Improper signage can risk FCC and OSHA violations. FCC and OSHA workers will ask for assessment reports when inspecting a site, especially upon seeing signage posted.
Other standards to follow are:
OSHA CFR 1926.200 (a) states that signs shall be visible at all times & shall be removed when the hazard no longer exists and the ANSI standard for signs: The Signal Word shall be a 2” letter visible @ (300”) 25’.
Color Coding Explained:
BLUE is a notice.
In an area with a blue sign, levels MAY exceed the FCC Uncontrolled/General Population limits at times. There shall be no trespassing on this site and owners should note there may still be a possibility of RF leaks, temporary spiking in RF levels and a need of other signage to warn of potentially higher levels or other hazards.
OSHA CFR 1910.145
YELLOW is a caution area.
(i) Caution signs shall be used only to warn against potential hazards or to caution against unsafe practices.
RSI NOTE: The Uncontrolled Limit is OSHA's action limit. Note: This area is above the general public standard and you must be trained to work in this area under caution.
(i) There shall be no variation in the type of design of signs posted to warn of specific dangers and radiation hazards.
RSI NOTE: Above the Controlled Worker Standard. You can not stay in this area for more than six minutes at 100% exposure. The time is only three minutes at 200%.
RSI offers online courses for signage for both general and telecommunications industries. (ESIH-53 “Signs and Tags” and TCS-123 “Site and Tower Signage”) See our online courses for Lockout/Tag out Procedure for both general and telecommunications industries (ESIH-45 “Lockout/Tag Out Policy and Procedure” and TCS-113 “Electrical Hazards and Lockout/Tag Out Telecom Sites”)
Live seminars also cover the signage and lockout/ tag out policy and procedures, email firstname.lastname@example.org or call toll free at (888) 830-5648 to speak with an experienced training consultant regarding live seminars in your area.
*These sign policies are based on FCC and OSHA signage enforcement (Consensus standards).
RSI RF Site Signage shall be used as an integral part of an overall site compliance plan. We recommend that should your site require the posting of signage, all personnel that find it necessary to pass the point of the posted "CAUTION" or "WARNING" signage shall be trained in how to control their exposure to RF energy as part of an overall written safety program (per FCC/OSHA recommendations). Ideally, signage shall only be installed after a thorough has been conducted to determine what areas should be categorized as "Above Controlled/Occupational limits" or "Above Uncontrolled limits" areas. NOTICE: Be sure that you do not post the signs on the doors or gates as if they are in the open position they may be rendered inconspicuous.
Information Per (OSHA CFR Part 1910)
§ 1910.145 Specifications for accident prevention signs and
(a) Scope. (1) These specifications apply to the design, application, and use of signs or symbols intended to indicate and, insofar as possible, to define specific hazards of a nature such that failure to designate them may lead to accidental injury to workers or the public, or both, or to property damage. These specifications are intended to cover all safety signs except those designed for streets, highways, railroads, and marine regulations.
(2) All new signs and replacements of old signs shall be in accordance with these specifications.
(c) Classification of signs according to use -- (1) Danger signs. (i) There shall be no variation in the type of design of signs posted to warn of specific dangers and radiation hazards. NOTE: Above the Controlled Worker Standard.
(ii) All employees shall be instructed that danger signs indicate immediate danger and that special precautions are necessary.(ie safety plans and training)
(2) Caution signs. (i) Caution signs shall be used only to warn against potential hazards or to caution against unsafe practices. NOTE: The Uncontrolled Limit is OSHA's action limit.
(ii) All employees shall be instructed that caution signs indicate a possible hazard against which proper precaution should be taken.