Related Manuals for Emerson Bettis Nuclear Series
Summary of Contents for Emerson Bettis Nuclear Series
- Page 1 Operation and Maintenance Manual VA065043 Rev. E June 2014 Bettis Nuclear Series Actuators...
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Page 3: Table Of Contents
Table of Contents Section 1: General Section 2: Storage Section 3: Installation Section 4: Start-Up Section 5: Operation of Emerson Actuator Controlled Operation .................. 5 Manual Operation ..................5 Section 6: Maintenance Service Interval ................... 6 Lubrication Requirements ................7... -
Page 4: Section 1: General
All Nuclear qualified actuators have a model number starting with an N prefix. In order to ensure and maintain the present level of qualification and auditability to the Emerson Qualification Report Number VA037274 and VA600529, Emerson requires that any maintenance or service work be performed by well-trained, equipped, prepared and competent personnel. -
Page 5: Section 2: Storage
Installation and Operation Manual Section 2: Storage VA065043 Rev. E June 2014 Section 2: Storage For applications where the actuator is not put into immediate service, it is recommended that the actuator be cycled by clean dry air or nitrogen pressure at least once a month. -
Page 6: Section 3: Installation
Section 3: Installation Installation and Operation Manual June 2014 VA065043 Rev. E Section 3: Installation Since there are many valve and actuator combinations, it is not practical to include detailed instructions for each type. Mountings are designed to be as simple as possible to keep guesswork out of installation. Actuators are shipped from the factory with the travel stops adjusted for approximately ninety degree rotation. -
Page 7: Section 4: Start-Up
Installation and Operation Manual Section 4: Start-Up VA065043 Rev. E June 2014 Section 4: Start-Up When the actuator is first put into service, it should be stroked. This is necessary because the seals and packings having been stationary, causing them to take a "set". -
Page 8: Section 5: Operation Of Emerson Actuator
Section 5: Operation of Emerson Actuator Installation and Operation Manual June 2014 VA065043 Rev. E Section 5: Operation of Emerson Actuator Controlled Operation Controlled operation is accomplished by pressurizing and depressurizing to the appropriate cylinder inlet(s) of a double-acting or spring-return unit(s) by means of an appropriate control valve. -
Page 9: Section 6: Maintenance
New generation actuators include NCBB, NCBA300 and NG Series actuators. For availability of technicians and equipment to perform required actuator service, contact Emerson or their authorized nuclear representative. For actuators normally used in nuclear service, all bearing surfaces are gen- erally coated with a molybdenum disulfide or Ryton coatings and corrosion inhibitor. -
Page 10: Lubrication Requirements
June 2014 VA065043 Rev. E Lubrication Requirements For nuclear service, use Emerson provided ESLN-6. NOTE: This product is only intended for use in large-scale fixed installations excluded from the scope of Directive 2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS 2). -
Page 11: Section 7: Spare Parts
VA065043 Rev. E June 2014 Section 7: Spare Parts For availability of replacement parts, contact Emerson or the nearest Emerson authorized nuclear representative. Assembly drawings are available that identify each individual part by a generic number applicable to each actuator Series. -
Page 12: Section 8: Document Revision
23 January 1986 10 June 2014 COMPILED O. Jimenez 9042 03 December 1986 10 June 2014 CHECKED N. Mundy 10207 20 June 1989 10 June 2014 APPROVED K. Chin VAWCO2463 10 June 2014 *Signatures on file Emerson, Houston, Texas Appendix... - Page 14 Tianjin 301700 Holland Fasor 6 P. R. China Székesfehérvár 8000 The Emerson logo is a trademark and service mark of Emerson Electric Co. T +86 22 8212 3300 Hungary Bettis is a mark of one of the Emerson family of companies.