---
kind: "section"
citation: "30 C.F.R. § 250.433"
title: "30"
number: "250.433"
heading: "What are the diverter actuation and testing requirements?"
url: "https://uscodex.org/cfr/30/250.433"
---

# §250.433. What are the diverter actuation and testing requirements?


When you install the diverter system, you must actuate the diverter sealing element, diverter valves, and diverter-control systems and control stations. You must also flow-test the vent lines.

- (a) For drilling operations with a surface wellhead configuration, you must actuate the diverter system at least once every 24-hour period after the initial test. After you have nippled up on conductor casing, you must pressure-test the diverter-sealing element and diverter valves to a minimum of 200 psi. While the diverter is installed, you must conduct subsequent pressure tests within 7 days after the previous test.
- (b) For floating drilling operations with a subsea BOP stack, you must actuate the diverter system within 7 days after the previous actuation. For subsequent testing, you may partially actuate the diverter element and a flow test is not required.
- (c) You must alternate actuations and tests between control stations.

## Notes

### Amendments

[76 FR 64462, Oct. 18, 2011, as amended at 84 FR 21975, May 15, 2019]

### Authority

Authority: 30 U.S.C. 1751, 31 U.S.C. 9701, 33 U.S.C. 1321(j)(1)(C), 43 U.S.C. 1334.

### Source

Source: 76 FR 64462, Oct. 18, 2011, unless otherwise noted.

### Amendments

[76 FR 64462, Oct. 18, 2011, as amended at 84 FR 21975, May 15, 2019]