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Cosasco

®

RBS/RBSA Retriever Maintenance Work Instruction

P/N: 741031revH

Scheduled Review Date: July 2018

Page:

13 of 46

Date: 26/06/2017

Note: Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service.

1. Loosen and remove the Mandrel Rod Stop Nut (15). Remove the Flat Washer (14).

2. Loosen and remove the four 3/8” Allen Screws using a 5/16” Allen Key. Ensure the

Retriever head (10) is held in place.

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Summary of Contents for RBS

Page 1: ...e Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 11841 Smith Avenue Santa Fe Springs CA 90670 Tel 562 949 0123 800 635 6898 Fax 562 949 3065 P N 741031revH www cosasco com ...

Page 2: ... Description of Change Issue Reviewed Approved 10 02 12 Initial Release KR ENG RA 5 A 04 11 13 Added Disclaimer Notes KR ENG RA 2 7 B 08 01 13 Updated Scope of Document added Revision History KR ENG RA ALL C 01 30 14 Annual Review KR ENG RA ALL D 01 25 15 Annual Review KR ENG RA ALL E 03 25 15 Added note on footer about latest revision KR ENG RA ALL F 12 15 15 Annual Review Update Cover and Name t...

Page 3: ...ument by downloading it from our website or by contacting Cosasco Customer Service Cosasco is a registered trademarks of Rohrback Cosasco Systems Inc No part of this work instruction may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying and recording for any purpose without the express written permission of Rohrback Cosasco Systems Inc ...

Page 4: ...ebsite or by contacting Cosasco Customer Service CONTENTS Page No 1 Important instructions 5 2 Disclaimer 6 3 Safety warnings 7 4 Scope of Document 8 5 RBS RBSA Retriever Maintenance 8 5 1 Sour Gas Service 9 5 2 Cleaning and Lubricating Without Disassembly 9 5 3 Retriever Disassembly 11 5 4 Retriever Assembly 26 6 Servicing Pressure Testing Of Retrieval Equipment 41 6 1 Pressure Testing 41 6 2 Pre...

Page 5: ...cation of this procedure WARNING Installing operating or maintaining a Cosasco high pressure retrieval tool improperly could lead to serious injury or death from a surge of pressure into the Retriever during retrieval causing pistoning Comply with all information on the product in this work instruction and in Cosasco System Safety Awareness Training that apply to the product Do not allow untrained...

Page 6: ...y result in serious injury or death 8 Save this work instruction for future reference 2 DISCLAIMER This disclaimer relates to the use of these work instructions by non Cosasco persons and entities Any person or organization utilizing this work instruction for any purpose does so at their own risk Rohrback Cosasco Systems Inc its affiliates and employees assume no liability arising from the use of ...

Page 7: ...equipment for the given media i e hard hat safety glasses protective clothing safety gloves respirator spill safety equipment etc 8 Any actions which could vary system pressure such as surges caused by opening and closing of valves and chokes must be delayed until completion of retrieval operations 9 Insure you have enough clearance for safe operation Note wind direction prior to starting operatio...

Page 8: ...procedure The lead technician is responsible for the strict adherence to this work instruction 5 RBS RBSA RETRIEVER MAINTENANCE The standard RBSA Retrieval tool features a stainless steel outer barrel Viton o rings Teflon back up rings and graphite impregnated Teflon dynamic seals They are pressure rated to 2500 psi 172 BAR and have a maximum operating temperature of 400 F 204 C and meets NACE MR0...

Page 9: ...Lubricant choices are many For a particular service some experimentation may be necessary Recommended lubricants are 1 Motor Oil SAE 30 weight or equivalent 2 Lubriplate multi purpose A lithium base grease usually the best choice for most service since it is thin and applies easily Use for service temperatures of 0 to 350 F 18 to 177 C Available as Cosasco 129372 3 Synthetic lubricant A molybdenum...

Page 10: ...end With the retriever head end up let the solvent drain out 6 Repeat steps 1 through 5 7 Extend the retriever again as indicated in paragraph 1 The retriever head end should again be placed down on a clean surface 8 Pour SAE 30 weight motor oil into the retriever inner barrel about four ounces 100 grams 9 Apply grease to the external surface of the retriever inner barrel 10 Stroke the retriever E...

Page 11: ...N 741031revH Scheduled Review Date July 2018 Page 11 of 46 Date 26 06 2017 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 5 3 Retriever Disassembly Retriever Diagram ...

Page 12: ...k Instruction P N 741031revH Scheduled Review Date July 2018 Page 12 of 46 Date 26 06 2017 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service Parts List ...

Page 13: ...7 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 1 Loosen and remove the Mandrel Rod Stop Nut 15 Remove the Flat Washer 14 2 Loosen and remove the four 3 8 Allen Screws using a 5 16 Allen Key Ensure the Retriever head 10 is held in place ...

Page 14: ...018 Page 14 of 46 Date 26 06 2017 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 3 Remove the Retriever head 10 and the Mandrel Rod Stop Washer 11 4 Withdraw the Mandrel Rod 12 from the Inner Barrel end 22 ...

Page 15: ...cument by downloading it from our website or by contacting Cosasco Customer Service 5 If required the Socket Assembly may be removed by unscrewing the two 5 16 Allen screws with a 1 4 Allen Key and then sliding the Socket Adaptor off the Mandrel Rod 6 Remove the Socket Adaptor Pilot spring and flat washer Drive out the split pin with a 1 4 punch Reverse steps 6 5 to re attach the pilot head ...

Page 16: ...atest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 7 Remove the Bleed Valve Assembly for individual servicing Remove individual components and seals Flush out with WD40 or other suitable lubricant 8 Withdraw Inner Barrel from Outer Barrel completely and use wood clamp assembly to secure retriver on the viser ...

Page 17: ...ease ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 9 Loosen and remove the two 1 4 Allen Screws 26 which retain the Thread Adaptor 8 b y u s i n g a 1 8 A l len Key 10 Using a C Spanner in the holes provided unscrew the Thread Adaptor 8 from the Inner Barrel ...

Page 18: ...8 of 46 Date 26 06 2017 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 11 Remove the Hammer Nut 7 12 Cover the Hammer Nut threads with PTFE tape and carefully slide the Inner Barrel out through the Retriever Head end ...

Page 19: ...duled Review Date July 2018 Page 19 of 46 Date 26 06 2017 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 13 Loosen and remove the four 3 8 Allen screws to remove the Seal Stop Collar ...

Page 20: ...18 Page 20 of 46 Date 26 06 2017 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 14 Gently remove the Seal Retainer and then the Seal Assembly Care is required to prevent damaging the inner seal upon removal ...

Page 21: ...e ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 15 Loosen and remove the four Allen Screws from the Socket Head Cap 24 with a 1 4 Allen Key 16 Remove the Socket Head Cap If difficult to remove use a pick tool or small slotted screwdriver to gently lever it off ...

Page 22: ...ate 26 06 2017 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 17 Carefully remove the Seal Retainer and Seal Assembly by gently prying them out of the Cap End If is difficult to remove use a pick tool to gently lever them out ...

Page 23: ...efully remove the Outer Seal assembly from the cap end If is difficult to remove use a pick tool to gently lever it off 19 Clean and lubricated the Inner and Outer Barrels inspecting for damage If chrome surfaces are damaged in a way that affects the Retrievers ability to maintain a seal these parts may need to be replaced 20 Clean and wipe down all other parts except the Seal Carrier Assemblies 2...

Page 24: ...ed Review Date July 2018 Page 24 of 46 Date 26 06 2017 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 22 To remove seals from their carriers use a pick tool or small slotted screwdriver ...

Page 25: ... July 2018 Page 25 of 46 Date 26 06 2017 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 23 To reinstall new seals into carriers apply a liberal amount of grease and be careful not to pinch the seals ...

Page 26: ...by downloading it from our website or by contacting Cosasco Customer Service 24 Apply liberal amount of grease to all seal retainers and along the outer surface of the Inner Barrel 25 Inspect Mandrel Rod for damage and clean with a suitable lubricant 5 4 Retriever Assembly 1 Gently reinsert Seal Carrier and then Seal Retainer into cap end of Inner Barrel Ensure seal face is facing into the barrel ...

Page 27: ...lease ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 2 G ently reinstall Seal Carrier onto cap end by applying even pressure to either side Ensure seal face is facing into the barrel 3 Reinstall Socket Head Cap 24 again applying even pressure to either side ...

Page 28: ...ed Review Date July 2018 Page 28 of 46 Date 26 06 2017 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 4 Reinstall the four Allen screws into the Socket Head Cap 24 with a 1 4 Allen Key ...

Page 29: ...uly 2018 Page 29 of 46 Date 26 06 2017 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 5 Slide the Inner Barrel back into the Outer Barrel from the Retriever Head end 6 Apply grease to Outer Barrel Seal ...

Page 30: ... Page 30 of 46 Date 26 06 2017 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 7 Gently slide seal over end of Inner Barrel 22 spring open end facing toward threads 8 Gently slide seal over Inner Barrel threads ...

Page 31: ...741031revH Scheduled Review Date July 2018 Page 31 of 46 Date 26 06 2017 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 9 Slide Seal Carrier over Inner Barrel threads ...

Page 32: ...P N 741031revH Scheduled Review Date July 2018 Page 32 of 46 Date 26 06 2017 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 10 Gently press Seal into Seal Carrier ...

Page 33: ...led Review Date July 2018 Page 33 of 46 Date 26 06 2017 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 11 Now gently slide carrier w seals along the Inner Barrel and into Outer Barrel ...

Page 34: ... July 2018 Page 34 of 46 Date 26 06 2017 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 12 Install the Seal Retainer 13 Install the Seal Stop Collar 9 Re insert the four 3 8 Allen Screws and tighten ...

Page 35: ...e the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 14 Remove the thread tape from the Inner Barrel threads and clean them with a suitable lubricant 15 Check O ring on the Thread Adaptor for nicks or abrasions and change if necessary 16 Reinstall Thread Adaptor onto Inner Barrel and hand tighten ...

Page 36: ...e you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 17 Withdraw Inner Barrel from Outer Barrel completely and use the wood clamp assembly to secure the retriever to the vise 18 Using a C Spanner in the holes provided screw the Thread Adaptor 8 onto the Inner Barrel threads tight ...

Page 37: ... 46 Date 26 06 2017 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 19 Reinstall and screw tight the Bleed Valve Assembly 20 Reinstall the two 1 4 Allen screws 26 which retain the Thread Adaptor 8 by using a 1 8 Allen Key ...

Page 38: ...te 26 06 2017 Note Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 21 Reinsert the Mandrel Rod gently through the Inner Barrel end 22 Slide on the Retriever Head 10 and the Mandrel Stop Washer 11 onto the Hex end of the Mandrel Rod ...

Page 39: ...have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service 23 Align the holes on the Retriever Head and Outer Barrel end and tighten the four 3 8 Allen screws using a 5 16 Allen Key 24 Reinstall the Mandrel stop nut 15 and flat washer 14 onto the Mandrel Rod end and tighten with a shifting spanner ...

Page 40: ...cument by downloading it from our website or by contacting Cosasco Customer Service 25 Recheck and tighten all Allen screws on the Retriever 26 Sit the Retriever on its end and stroke the Inner Barrel to ensure smooth operation If not smooth flush tool with a suitable lubricant or apply more grease to the inner barrel 27 Perform appropriate pressure test for tools operational rating in PSI ...

Page 41: ...ated and difficult to use The Field Technician will determine on a case by case basis if the tool needs to be stripped down or if it can be flushed out with either water or suitable cleaning agent without stripping the tools down At the end of each major service visit the tools will be stripped down cleaned seals replaced as necessary re assembled and pressure tested See Section 6 2 for pressure t...

Page 42: ...n the field each online retrieval operation can be considered a successful pressure test for a further consecutive online retrieval operation with a validity of 12 hours This duration between retrieval operations may be increased to 72 hours provided the tool is drained of any process fluids and the equipment internals have a suitable lubricant protectant such as WD40 or Hydraulic Oil applied with...

Page 43: ...g the isolating valve is opened 7 Continue pumping until all air is displaced from the atmospheric bleed valve 8 Continue pumping and during a pump action close the atmospheric bleed valve 9 Stop pumping once the oil level has passed the main bottom valve if testing a double isolation valve ball valve and close it 10 Re commence pumping and pressurize the assembly to the pressures stated in step 1...

Page 44: ...alve 8 Continue pumping and during a pump action close the Retriever atmospheric bleed valve 9 Continue pumping and pressurize the assembly to the pressures stated in step 11 Leave pressurized for 15 minutes during each stage and observe that there is no pressure drop on the pressure test rig gauge Note There may be some drop in pressure during the 15 minute test period due to the compression of a...

Page 45: ...NOTES ...

Page 46: ...Cosasco sales cosasco com www cosasco com ...

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