API 686 "MECHANICAL INSTALLATION FOR ROTATING AND STATIC EQUIPMENT"

 API 686 

MECHANICAL INSTALLATION FOR ROTATING AND STATIC EQUIPMENT

1.    -          To provide the guideline & steps for carrying out static and rotating equipment installation, combination according to vendor specification, relevant construction drawings and company specification.

          This applies for all Static and Rotating  Equipment Installation in Wellhead Platform  that comes under Direct Lifting and Skidding and positioning Equipment at the Module.

                                                                                                                      

34.     Definition

-          MECH – Mechanical

-          PMT – Project Management Team

-          RA – Risk Assessment

-          WMS –Work Method Statement

-          PSI – Personal safety involvement

-          DC – Dimensional Control

-          GA – General Arrangement

Responsibilities

PMT Supervisor/Task Supervisor 

-          Pre-Job Briefing and Risk Assessment shall be carried out by supervisors before commencing a specific activity.

 Rigger, Signalman & Supervisor 

-          Ensure all lifting appliances are in good condition & with valid certificate/tags are available during lifting operation.

-          In order to avoid unauthorized entry, barricade the lifting area.

-           Lifting plan to be filled in and signed off.

 Equipment / Tools

-          Use of Mechanical handling Equipment – Crane for lifting, Hydraulic Jacks, Hydraulic Pumps, Chain blocks, Web Slings, Rollers, Trifor etc.,

-          Measuring Tools (automatic level,)

-          Welding & Grinding sets

-          Spanner Set, Torque Wrench.

-          A frame ladders (less than 3m).

Procedure / Work Methods

Pre-requisite

1.1              Apply Permit for Work (Hot work permit) and Lifting Permit.

1.2              Conduct pre-job briefing & Risk Assessment briefing with Supervisor and Involved team.

1.3              Ensure lifting path are clear of obstacle, barricade/cordon off the lifting zone.

1.4              Use approved lifting plan, Lifting procedure and vendor GA drawing, Lifting arrangement drawing for lifting points and fix lifting appliances accordingly.

1.5              For Packages, Vessels & Skids weighing 20 Tons and above, engineering specified Lifting Procedure or vendor drawing to be incorporated.

1.6              Authorized & qualified lifting personnel viz lifting supervisors, riggers and signalman are to be involved in the respective activities.

1.7              For rigging/de-rigging activities like installation of “D” Shackles and Slings, proper use of A-Frame ladder (less than 3m. If approach is high and out of reach, temporary scaffolding to be used.

1.8              Only used certified lifting gear and appliances. 

EQUIPMENT INSTALLATION WITH SUPPORT PADS/AVM

2.1       For support Pad/AVM come along with the equipment for installation, which to be located on respective doubler plates and positioned as per equipment layout drawing. This positioning to follow as per Vendor Foot print with reference to the grid lines and Datum point as specified in Vendor GA and equipment layout Drg.

2.2       DC checks to be done after positioning of the support pad and recorded before welding

2.3       Welding of support pads/AVM, followed by NDT.

2.4        DC check after welding.

2.5        Grinding & Coat back on the weld joint area. Surface preparation, painting & QC inspection of the welded doubler plate and support pad before placing the equipment on the support pads.

  SKIDDING AT SITE ON TO MODULE

       3.1      Crane of correct lifting capacity to be parked at site near to module for off-loading and lifting the equipment to Temporary skidding platform.

                  Use of Vendor supplied or Main Contractor operation certified Lifting gears as per vendor or engineering lifting plan.

                  Pre-check the skid rollers and maintained in good condition before put into the operation.

       3.2       Temporary Skidding Platform installed in position as per Equipment skidding layout. If there is need to remove the perimeter Hand rail/Guard rail, then WAH PTW should be applied.

      3.3       Lifting arrangement to follow the vendor supplied lifting arrangement or as specified by Engineering dept. in Lifting plan/procedure (20 Ton and above).

 3.4       By giving proper signals to the crane operator by the signal man, equipment to be positioned on the Skid Roller placed on temporary skidding platform. Only authorized personal are allowed inside the skidding area.

 

 

 

 

 

 

 

4.4       Verify the orientation of the equipment with PDMS & GA drawings.

 4.5       After the equipment has been properly positioned on the Skid Rollers, release the           slings and de-rig the shackles.

 4.6       Prepare the equipment/Skid for skidding by attaching the web slings of correct capacity/SWL to the skid pad eyes and other end to Trifor/Chain block. This may involve use of Lever blocks also.

 4.7       After ensuring the stability of the equipment/Skid, the Trifor or Chain block to be operated to commence the skidding operation. Skidding zone should be barricaded, to prevent unauthorized entry.

 4.8       Skidding operation to follow the skidding path as highlighted in equipment skidding layout.

 4.9       On reaching the sitting location, the equipment/Skid to be positioned on to the Doubler Plate/Support Pad using Hydraulic Jack and skid rollers.

  Carryout the leveling of the equipment to meet the leveling tolerance as specified in equipment installation procedure. This involves shimming on the support pads.

5.1       Installation of Vendor supplied foundation Bolts and Torqueing.

5.2       DC check on final installation and recording.

5.3        Proper housekeeping after complete the equipment skidding.

4)      Equipment Lifting at site

4.1       Correct crane capacity to be parked at storage yard for lifting of the equipment.

4.2       Lifting arrangement is to follow the vendor supplied lifting plan/procedure or as specified by Engineering dept.

4.3       Ensure all the lifting gears and appliances used are  certified and as per lifting plan.

4.4       Pad eye must be fully welded with MPI if used for lifting equipment.

4.5       For crane adaptor install on top of crane column, final derigging to be done only after the crane adaptor secure with guide plate and welded. Ensure safe working platform available.

4.6       By giving proper signals to the crane operator by the signal man, equipment is to be lifted and positioned on the location at module                                                      

4.7        The orientation & positioning of the equipment to be verified with GA drawing & PDMS snaps.

4.8       After the equipment has been properly positioned, release the slings and de-rig the shackles with adequate and safe work platform

4.9        Proper housekeeping after complete the equipment skidding.

 

 

                                          TYPICAL VENDOR LIFTING PLAN