Premise and Definitions: Alarm practices and systems on ships are different than alarm practices and systems on land. The term visible alarms may include other appropriate visible signaling methods to communicate the general emergency alarm and local smoke detector alarm that do not trigger seizures in individuals who have epilepsy.
Recommendation #1 – Applies to general emergency alarms in public spaces which summon passengers to designated muster stations. Cabins (guest rooms) are addressed in recommendation #2 below.
Example: Prior to getting underway or in the course of getting underway, the crew of a vessel instructs the passengers on what actions the passengers must take when the general emergency alarm is activated (e.g., seven short sound blasts and one long sound blast). The instruction includes the location and route to the muster stations. When the alarm is activated, without waiting for further direction or instruction by the crew, passengers automatically head to their muster stations where they await further direction or instruction by crew members. Although crew members may be present and may provide direction to muster stations, the alarm system communicates a message independent of crew actions. This alarm system produces an automatic predetermined action in passengers which is similar to how building occupants respond to fire alarms.
Short Range
Long Range
Recommendation #2 – Applies to general emergency alarms and local smoke detector alarms in cabins (guest rooms).
Example 1: The general alarm is activated, and passengers in cabins are alerted (and awaken if necessary) and automatically head to the muster stations without waiting for crew directions or instructions.
Example 2: The cabin smoke detector activates a cabin alarm, and passengers in that cabin are alerted (and awaken if necessary) and automatically leave the cabin without waiting for crew directions or instructions.
Recommendation #3 – Applies to emergency alarms (audible alarm or voice alert) in public spaces to notify/get passenger attention, followed by crew instructions on how to respond.
Example: A general alarm is sounded over the vessel public address system, or an announcement is made about an emergency condition (like a fire in the galley). Although passengers may be aware that the alarm is activated or know some type of emergency condition exists on the vessel, without direction or instruction by the crew, passengers are unsure of where to go in the vessel and how to respond.
New Construction Design Elements: If an audio amplification system (e.g., public address system) is provided for a safety briefing, the amplification system must include the ability to transmit the audio signal to at least one type of assistive listening system (ALS) (e.g., Inductive loop, FM, and Infra-red). The ALS will be hearing aid compatible and will include more than one option of hearing aid compatible coupling device include coupling devices and hearing-aid compatibility. Use the 2006 draft vessel accessibility guidelines for determining the number of receivers.
Operational Elements: If audible instruction, there must be a visual auxiliary aids and services per 28 CFR part 35.160 (DOJ title II regulations), 28 CFR part 36.303 (DOJ title III regulations), and 49 CFR part 37.5(f) (DOT regulations) which could include computers, data screens, illustrative instructions (pictures), LCD TVs, wall mounted or hand carried placards, and white boards. Industry should evaluate how to better provide safety info to persons with hearing loss or deafness upon boarding. Concerns about DOT NPRM include: the use of auxiliary aids and service for effective communication over the full spectrum of hearing loss, including visual and audible.
New Construction Design Elements: There is consensus to provide visible alarms for emergency alerts. See recommendation #1 above on development of technical standards for visible alarms.
Operational Elements: No Recommendations.
New Construction Design Elements: If an audio amplification system is provided for emergency instructions, the amplification system must include the ability to transmit the audio signal to at least one type of ALS (e.g., Inductive loop, FM, and Infra-red). The ALS will be hearing aid compatible and will include more than one option of hearing aid compatible coupling device include coupling devices and hearing-aid compatibility. Use the 2006 draft vessel accessibility guidelines for determining the number of receivers. Emergency power must be provided for ALS, if amplification system has emergency power.
Operational Elements: If audible instruction, there must be a visual auxiliary aids and services per 28 CFR part 35.160 (DOJ title II regulations), 28 CFR part 36.303 (DOJ title III regulations), and 49 CFR part 37.5(f) (DOT regulations) which could include computers, data screens, illustrative instructions (pictures), LCD TVs, wall mounted or hand carried placards, and white boards.
Recommendation #4 – Areas of additional research and recommendations.
Recommendation #5 – Supplemental emergency communications by public address system or crew.
Changes (shown in yellow as insertions or
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1 Recently, the NFPA 72 committee has proposed (accepted in principle) to amend section 11.3.7 of NFPA 72 (for the 2010 version) to have a low frequency alarm signal in certain sleeping rooms. The alarm signal would have a square wave or equivalent awakening ability. The wave would have a fundamental frequency of 520 Hz +/- 10%, and the minimum sound level at the pillow would be 75 dBA, or 15 dB above the ambient noise level, whichever is greater.