---
kind: "section"
citation: "29 C.F.R. § 1915.164"
title: "29"
number: "1915.164"
heading: "Ship's propulsion machinery."
url: "https://uscodex.org/cfr/29/1915.164"
---

# §1915.164. Ship's propulsion machinery.

- (a) Before work is performed on the main engine, reduction gear, or connecting accessories, the employer shall ensure that the following steps are taken:
  - (1) The jacking gear shall be engaged to prevent the main engine from turning over. A sign shall be posted at the throttle indicating that the jacking gear is engaged. This sign shall not be removed until the jacking gear can be safely disengaged.
  - (2) If the jacking gear is steam driven, the employer shall ensure that the stop valves to the jacking gear are secured, and then locked or tagged, in accordance with [§ 1915.89](/cfr/29/1915.89.md).
  - (3) If the jacking gear is electrically driven, the circuit controlling the jacking gear shall be de-energized by tripping the circuit breaker, opening the switch, or removing the fuse, whichever is appropriate, and then locked or tagged in accordance with [§ 1915.89](/cfr/29/1915.89.md).
- (b) Before the jacking engine is operated, the following precautions shall be taken:
  - (1) A check shall be made to ensure that all employees, equipment, and tools are clear of the engine, reduction gear, and its connecting accessories.
  - (2) A check shall be made to ensure that all employees, equipment and tools are free of the propeller.
- (c) Before work is started on or in the immediate vicinity of the propeller, a warning sign calling attention to the fact that employees are working in that area shall be hung in a conspicuous location in the engine room. This sign shall not be removed until it is determined that the work is completed and all employees are free of the propeller.
- (d) Before the main engine is turned over (e.g., when warming up before departure or testing after an overhaul) a check shall be made to ensure that all employees, equipment, and tools are free of the propeller.

## Notes

### Amendments

[47 FR 16986, Apr. 20, 1982, as amended at 76 FR 24711, May 2, 2011]

### Authority

Authority: 33 U.S.C. 941; 29 U.S.C. 653, 655, 657; Secretary of Labor's Order No. 12-71 (36 FR 8754); 8-76 (41 FR 25059), 9-83 (48 FR 35736), 1-90 (55 FR 9033), 6-96 (62 FR 111), 3-2000 (65 FR 50017), 5-2002 (67 FR 65008), 5-2007 (72 FR 31160), 4-2010 (75 FR 55355), 1-2012 (77 FR 3912), or 8-2020 (85 FR 58393); 29 CFR part 1911; and 5 U.S.C. 553, as applicable.

### Source

Source: 47 FR 16986, Apr. 20, 1982, unless otherwise noted.

### Amendments

[47 FR 16986, Apr. 20, 1982, as amended at 76 FR 24711, May 2, 2011]