1. PURPOSE
1.1 This global engineering specification defines the minimum requirements for installation of Victaulic and Dresser couplings.
1.2 This specification also provides checklists to confirm that the minimum requirements are achieved.
2. Scope
2.1 This specification applies to all projects having Victaulic or Dresser couplings supplied separately from equipment packages.
3. RELATED DOCUMENTS
3.1 Air Products Engineering Documents None
3.2 Victaulic Company of America I-100 Field Installation Handbook Victaulic Piping Design Manual
3.3 Dresser Manufacturing Division of Dresser Industries, Inc. Dresser Gas Product Installation Manual for Style 38 Coupling
4. DEFINITIONS
4.1 Construction misfit – lateral offset between two adjacent piping spools caused by poor fit up during construction.
5. VICTAULIC COUPLING INSTALLATION
5.1 Victaulic Couplings are delivered with copies of the Field Installation Handbook (I-100). These instructions or those shown in the Victaulic Piping Design Manual shall be followed in addition to details and instructions shown on the project-specific construction drawings.
5.2 The Victaulic Coupling Installation Checklist located in Appendix A of this specification shall be completed by the contractor for each installed coupling. Any bulleted item on the checklist not marked as “Y” is considered a discrepancy, and requires a proposed resolution with a detailed schedule submitted for approval to the Air Products Stress Engineering Department.
5.2.1 The contractor shall immediately report any suspected discrepancies in such things as cleaning, lubricants, gasket materials, and pipe end preparation to the Air Products representative.
5.2.2 Quality or design issues that might affect the pressure-containing ability of the coupling, such as poor fit or other-than-specified lateral offset (caused by installation mismatch), shall be directed for approval to the Air Products Stress Engineering Department, at the discretion of the Air Products representative.
5.3 Housing keys must fit into grooves properly to maintain the pressure rating of the joint and to prevent joint failure. Situations to avoid are: oversized or undersized fittings/pipes shallow groove or deep groove eccentric groove gaps in bolt pad on body of coupling Refer to I-100 for details.
6. DRESSER and Viking johnson COUPLING Installation
6.1 Dresser Couplings (USA) and Viking Johnson Couplings (Europe) are very similar in construction, and identical in purpose. Dresser Couplings shall be installed in accordance with the Dresser Style 38 Installation Manual in addition to the details and instructions shown on the project-specific construction drawings. A tag with installation instructions accompanies each Dresser coupling when shipped. Similarly, Viking Johnson Couplings shall be installed in accordance with the Fitting Instructions that accompany the coupling.
6.2 The Dresser and Viking Johnson Coupling Installation Checklist located in Appendix B shall be completed by the contractor for each installed coupling. Any bulleted item on the checklist not marked as “Y” is considered a discrepancy, and requires a proposed resolution with a detailed schedule submitted for approval to the Air Products Stress Engineering Department.
6.2.1 The contractor shall immediately report any suspected discrepancies in such things as cleaning, lubricants, gasket materials, pipe end preparation, or assembly dimensions to the Air Products representative.
6.2.2 Quality or design issues that might affect the pressure-containing ability of the coupling, such as poor fit or other-than-specified lateral offset (caused by installation mismatch), shall be directed for approval to the Air Products Stress Engineering Department at the discretion of the Air Products representative.
6.2.3 Quality issues pertaining to the tie rods, lugs, or welds shall be submitted for approval to the Air Products Stress Engineering Department at the discretion of the Air Products representative.
Appendix A Victaulic Coupling (07 Rigid) Installation Checklist Style 77 Flexible Coupling Style 07 Rigid Coupling (checklist can be used for multiple couplings on any one pipeline)
| Date: | Name Of Inspector (Print): | ||
| VICTAULIC COUPLING IDENTIFICATION Line Identification No.: Isometric or Drawing No.: | |||
| PREASSEMBLY INSPECTION | |||
| Are all pieces clean and free from hydrocarbon contamination? | Y | N | |
| Are all pieces present and undamaged? | Y | N | |
| Are gaskets properly identified with tag or color code? | Y | N | |
| INSTALLATION CHECKS | |||
| Pipe Ends | |||
| Are pipe ends round, undamaged, and without sharp edges? | Y | N | |
| Is pipe wall thickness correct as shown in the piping specifications? | Y | N | |
| Is area where gasket seats smooth? | Y | N | |
| Is the groove correct as shown in piping specifications (i.e., roll groove or machine groove)? | Y | N | |
| Are groove dimensions correct and is the depth equal all around? | Y | N | |
| Alignment | |||
| Is the gap between pipe ends within limits specified by Victaulic? | Y | N | |
| Are pipe ends parallel? | Y | N | |
| Gaskets | |||
| Is gasket material correct as specified on design drawings? | Y | N | |
| Are gaskets lubricated with lubricant specified on design drawings? | Y | N | |
| Is gasket installed in the correct position? | Y | N | |
| Coupling Housing | |||
| Do housing keys fit properly into pipe grooves (see paragraph 5.3)? | Y | N | |
| Are bolts tightened evenly? | Y | N | |
| Are bolt pads in metal to metal contact at both pads? | Y | N | |
| Style 07 couplings. Do angle pads have equal offsets on both sides? | Y | N | |
| Note Any Discrepancies And The Proposed Resolutions: | |||
| Contractor Signature: | |||
| Air Products Signature: | |||
Appendix B Dresser and Viking Johnson Coupling Installation Checklist
| Date: | Name Of Inspector (Print): | ||
| DRESSER and VIKING JOHNSON COUPLING IDENTIFICATION Line Identification No.: Isometric or Drawing No.: | |||
| PREASSEMBLY INSPECTION | |||
| Are all pieces clean and free of hydrocarbons? | Y | N | |
| Are all pieces present and undamaged? | Y | N | |
| Are gaskets free of nicks or gouges? | Y | N | |
| INSTALLATION CHECKS | |||
| Pipe Ends | |||
| Are ends round, undamaged, and without sharp edges? | Y | N | |
| Are pipe ends properly cleaned for service? | Y | N | |
| Is gasket seating area smooth? | Y | N | |
| Tie Rod Thrust Lugs | |||
| Are lugs installed in the proper orientation as shown on the design drawings? | Y | N | |
| Are lugs installed the proper distance from the pipe end as shown on the design drawings? | Y | N | |
| Does the lug design match the design drawing? | Y | N | |
| Have lug welds passed the dye penetrant test? | Y | N | |
| As Built Length | |||
| Does as-built length of assembly match the dimensions shown on design drawings? | Y | N | |
| Alignment | |||
| Was assembly installed with offset specified on design drawings? | Y | N | |
| Was assembly installed without offset for construction misfit? | Y | N | |
| Tie Rods | |||
| Is tie rod and nut material stamped on end of rod and correct as specified on design drawings? | Y | N | |
| Are tie rods the proper length and diameter and unaltered? | Y | N | |
| Are rod nuts properly snugged on outside of tie plate and jam nuts tight or tack welded? | Y | N | |
| Gaskets | |||
| Is gasket material correct as specified on design drawings? | Y | N | |
| Lubrication | |||
| Have the pieces requiring lubricant been lubricated during assembly using the proper | |||
| lubricant for the service as specified on the design drawings? | Y | N | |
| Bolting | |||
| Have coupling bolts been torqued as required by the Installation instructions? | Y | N | |
| Note Any Discrepancies And The Proposed Resolutions: |
| Contractor Signature: |
| Air Products Signature: |