[Code of Federal Regulations]
[Title 46, Volume 4]
[Revised as of October 1, 2006]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR111.105-11]
[Page 245]
TITLE 46_SHIPPING
(This book contains parts 90 to 139)
CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
PART 111_ELECTRIC SYSTEMS_GENERAL REQUIREMENTS--Table of Contents
Subpart 111.105_Hazardous Locations
Sec. 111.105-11 Intrinsically safe systems.
(a) Each system required under this subpart to be intrinsically safe
must use approved components meeting UL 913 or IEC 79-11(Ia).
(b) Each electric cable of an intrinsically safe system must--
(1) Be 50 mm (2 inches) or more from cable of non-intrinsically safe
circuits, partitioned by a grounded metal barrier from other non-
intrinsically safe electric cables, or a shielded or metallic armored
cable; and
(2) Not contain conductors for non-intrinsically safe systems.
(c) As part of plan approval, the manufacturer must provide
appropriate installation instructions and restrictions on approved
system components. Typical instructions and restrictions include
information addressing--
(1) Voltage limitations;
(2) Allowable cable parameters;
(3) Maximum length of cable permitted;
(4) Ability of system to accept passive devices;
(5) Acceptability of interconnections with conductors or other
equipment for other intrinsically safe circuits; and
(6) Information regarding any instructions or restrictions which
were a condition of approval of the system or its components.
(d) Each intrinsically safe system must meet ISA RP 12.6, except
Appendix A.1.
[CGD 94-108, 61 FR 28284, June 4, 1996, as amended at 62 FR 23909, May
1, 1997]
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