Valve-shaft-to-actuator key may fall out of place when mounted below horizontal axis.

Bibliographic Details
Format: Government Document eBook
Language:English
Published: Washington, D.C. : United States Nuclear Regulatory Commission, Office of Inspection and Enforcement, 1985.
Series:NRC information notice ; 85-67.
Subjects:
Online Access:https://purl.fdlp.gov/GPO/gpo147402
Description
Item Description:"August 8, 1985."
Physical Description:1 online resource.