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Operation and Maintenance Manual

VA065043 Rev. E

June 2014

Bettis Nuclear Series Actuators

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Summary of Contents for Bettis Nuclear Series

Page 1: ...Operation and Maintenance Manual VA065043 Rev E June 2014 Bettis Nuclear Series Actuators ...

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Page 3: ...of Contents Section 1 General Section 2 Storage Section 3 Installation Section 4 Start Up Section 5 Operation of Emerson Actuator 5 1 Controlled Operation 5 5 2 Manual Operation 5 Section 6 Maintenance 6 1 Service Interval 6 6 2 Lubrication Requirements 7 Section 7 Spare Parts Section 8 Document Revision ...

Page 4: ...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: ...ecommended that the actuator be cycled by clean dry air or nitrogen pressure at least once a month Indoor storage if available is recommended for all actuators Care should be taken to plug the cylinder ports control valve ports and body ports to keep out foreign particles and moisture Also actuators should not be stored in an atmosphere harmful to resilient seals For extended storage contact the f...

Page 6: ...lled on the valve Refer to the valve manufacturer s recommendations for specific requirements When the valve has internal stops the actuator should be adjusted at the same points NOTE The actual stopping should be done by the actuator If the valve does not have internal stops adjust the actuator to the full open position Using this as a reference point rotate the valve closed and adjust to the val...

Page 7: ...er supply line pressure d Control valve and fitting orifice size e Torque requirements of the valve f Size of actuator g Setting of speed controls h Pressure of hydraulic manual override with internal adjustable speed controls 3 Due to the interaction of these variables it is difficult to specify a normal operating time Faster operating times may be obtained by using one or more of the following a...

Page 8: ...surizing to the appropriate cylinder inlet s of a double acting or spring return unit s by means of an appropriate control valve Do not exceed pressures indicated on the actuator nameplate 5 2 Manual Operation All pressure must be vented or equalized on both sides of the power piston prior to manual operation Lubricate the exposed screw threads with ESLN 6 lubricant loosen jam nut and rotate drive...

Page 9: ...D and NT Series actuators New generation actuators include NCBB NCBA300 and NG Series actuators 2 For availability of technicians and equipment to perform required actuator service contact Emerson or their authorized nuclear representative 3 For actuators normally used in nuclear service all bearing surfaces are gen erally coated with a molybdenum disulfide or Ryton coatings and corrosion inhibito...

Page 10: ...rication 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: ...applicable to each actuator Series It should be remembered when ordering spare seal kits for shelf storage that the seals are made of resilient material and have a limited shelf life 2 When ordering replacement parts it is important to include the complete actuator model number part number and serial number This information is on the actuator name tag 3 More detailed information concerning your pa...

Page 12: ... Document Revision Table 1 Revision Overview ECN DATE REV BY DATE 8689 23 January 1986 B COMPILED CHECKED APPROVED O Jimenez N Mundy K Chin 10 June 2014 9042 03 December 1986 C 10 June 2014 10207 20 June 1989 D 10 June 2014 VAWCO2463 10 June 2014 E Signatures on file Emerson Houston Texas ...

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Page 14: ...ongmeadow Business Estate East P O Box 6908 Greenstone 1616 Modderfontein Extension 5 South Africa T 27 11 451 3700 EUROPE Holland Fasor 6 Székesfehérvár 8000 Hungary T 36 22 53 09 50 Strada Biffi 165 29017 Fiorenzuola d Arda PC Italy T 39 0523 944 411 www emerson com bettis 2018 Emerson All rights reserved The Emerson logo is a trademark and service mark of Emerson Electric Co BettisTM is a mark ...

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