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Title 46: Shipping
CHAPTER I: COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
SUBCHAPTER V: MARINE OCCUPATIONAL SAFETY AND HEALTH STANDARDS
PART 197: GENERAL PROVISIONS
Subpart B: Commercial Diving Operations
: Periodic Tests and Inspections of Diving Equipment
197.458 - Gages and timekeeping devices.
The diving supervisor shall insure that?
(a) Each depth gage and timekeeping device is tested or calibrated against a master reference gage or time-keeping device every 6 months;
(b) A depth gage is tested when a discrepancy exists in a depth gage reading greater than 2 percent of full scale between any two gages of similar range and calibration;
(c) A timekeeping device is tested when a discrepancy exists in a timekeeping device reading greater than one-quarter of a minute in a 4-hour period between any two timekeeping devices; and
(d) Each depth gage and timekeeping device is inspected before diving operations are begun.
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