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Chapter 1 Administration
1.5 Safety.
1.5.1 Hazards to Personnel.
(See Annex D.)
1.5.1.1 Unnecessary Exposure. Unnecessary exposure to Halon 1301 and its decomposition
products shall be avoided. Exposure to high concentrations or for prolonged periods can produce
dizziness, impaired coordination, and disturbances in cardiac rhythm.
1.5.1.2* Safety Requirements. Suitable safeguards shall be provided to ensure prompt evacuation
and prevent entry into hazardous atmospheres and also to provide means for prompt rescue of any
trapped personnel. Safety items such as personnel training, warning signs, discharge alarms, and selfcontained breathing equipment shall be considered.
1.5.2 Electrical Clearances. All system components shall be located to maintain no less than
minimum clearances from live electrical parts. The following references shall be considered as the
minimum electrical clearance requirements for the installation of Halon 1301 systems:
1) ANSI C-2
2) NFPA 70
3) Title 29, CFR 1910, Subpart S
1.5.2.1 When the design basic insulation level (BIL) is not available and when nominal voltage is used
for the design criteria, the highest minimum clearance listed for this group shall be used.
1.5.3* Decommissioning and Removal of Systems. Personnel who are to decommission and
remove systems or are to handle system equipment shall be thoroughly trained and competent in safe
procedures.
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