METHOD STATEMENT FOR REFRIGERANT COPPER PIPE AND PROCEDURE

 METHOD STATEMENT FOR REFRIGERANT COPPER PIPE.

                 

WWW.HVACMEPCONTRACTORS  METHOD STATEMENT FOR REFRIGERANT COPPER PIPE.

TABLE OF CONTENTS

1              OBJECTIVE          three

2              SCOPE of labor  three

3              PURPOSE             three

4              ABBREVIATIONS               three,4

5              REFERENCES & STANDARDS        four

6              RESPONSIBILITIES            four,5,6,7

7              INSTALLATION METHODOLOGY eight

8              BRAZING METHODOLOGY            eight,9

9                SAFETY               nine

10           TOOLS AND instrumentation      nine,10

11           ATTACHMENT                                                  

12           Delivery, Storage, handling, and reservation

                               

1.            OBJECTIVE:

 

The objective of this technique Statement is to explain the installation following the approved search drawings and project specification.

 

WWW.HVACMEPCONTRACTORS  METHOD STATEMENT FOR REFRIGERANT COPPER PIPE.

2.            SCOPE OF WORK:

The scope of this technique statement is to outline all activities and necessities necessary for

Refrigerant Copper Pipes, Heating, Ventilation and air con (HVAC) System at‘’ web site” project in  SITE , K HMC and to confirm that each one works/activities acceptance criteria, United Nations agency drawings, specifications codes ‘ web site” project in  SITE and to confirm that each one works/activities area unit fully compliance with project specifications, drawings and   standards associated with installations standards, verificatory Documents go with AL MANZIL AL MASSI Typical scrutiny arrange ( TIP) associated with installations.

 

3.            PURPOSE:

 the aim of this technique statement is to explain the standard management procedure to be followed throughout installation of Refrigerant Copper Pipes at ‘’  SITE” project in  SITE” project at AL AH HMC, K HMC and to detail the directions to be followed and therefore the documentation to be used so as to confirm that Safe installation is dead in accordance with the project specifications and standards.

   

 

4.ABBREVIATIONS:

❖  HMCEP           :               Engineering Procedure

❖ RFI                    :               Request for scrutiny

❖ ANSI                 :               yank National Standards Institute

❖  HMCES           :               Engineering Standards

❖ inflammatory disease :             Project scrutiny Department

❖  HMCPMT                         :  Project Management Team

❖            ITP                            : scrutiny & check arrange

❖            NCR                         : Non-Conformance Report

❖            PM                           : Project Manager

❖            CM                           : Construction Manager

❖            QCM                        : internal control Manager

❖            QC                            : internal control

❖            PPE                          : Personal protecting instrumentation

❖            ASTM                      : yank society of check material

❖            ASME                      : yank Society of Mechanical Engineers

❖            ASHRAE                       : yank Society of Heating, refrigerant, and Air-Conditioning Engineers.

❖            BPS                             : Brazing Procedure Specification.

  

5.  REFERENCES AND STANDARDS:

❖            HMCES-K-001 Heating, Ventilating and Air-Conditioning.

❖            HMCES-K-100   Mechanical (HVAC) Code.                                                                     

❖            ANSI B31.5 – Refrigeration Piping.

❖            ASHRAE Handbook–HVAC Applications, Systems and instrumentation, Fundamentals and

        Refrigeration.

❖            Project Specification (SECTION  - REFRIGERANT PIPING)

WWW.HVACMEPCONTRCTORS.COM ASHRAE Handbook–HVAC Applications, Systems and instrumentation, Fundamentals and          Refrigeration

  

6.            RESPONSIBILITIES:

6.1.         Project Manager (PM):

The PM is liable for making certain the execution of the sequence of this technique statement in step with written agreement demand, quality, search drawings, and every one the connected activities and shall be attached  the total conferences and communication with   management.

6.2.         Construction Manager/Site Engineer:

 it's the responsibility of CM for dominant and managing the execution of the sequence of this technique statement in step with written agreement demand, quality, submittals and approvals and every one the connected activities at intervals the location works. He can make sure the progressing of labor is applied in step with the planned program and per the approved methodology. He also will involve with the total conferences and communication at web site with   representatives.

6.3.         Mechanical Supervisor: 

Mechanical Supervisor shall be directly concerned in coming up with and execution of all fabrication

&erection activities at web site and Shall have the information of installation of copper Piping system so as to clarify the tactic statement to his subordinates. He can make sure that foreman go with the necessities of the tactic statement and alternative relevant project specification, drawings, and alternative reference codes and standards applied to the project web site. He also will liable for the schedule management and tracing of all relevant coming up with and resolves the issues arising from the drawing discrepancy with the planning engineer.

 

6.4.         Foreman:

Foreman shall be liable for the direct execution of all Installation works in step with the arrange and supply directions to the Fabricators and Fitters. He can ensure the great condition of all Fabrication, erection and attachment tools and instrumentation to be used for fabrication & erection works. He also will make sure that subordinates should use correct PPE, smart work, and compliance with   safety rules and rules. He also will make sure that work is applied properly and in step with manufacturer tips and directions.

6.5.         QC Manager:

It is the responsibility of QC Manager for dominant and managing the standard of this specific technique statement in step with written agreement demand, quality, search drawings, submittals and approvals. He also will involve with the total conferences and communication with  HMCPID and  HMCPMT.

   

6.6.         QC Supervisor:

❖            Guide the QC Inspectors and monitor their performance at the location.

❖            Provide his subordinates with latest approved technique, material submittals and search drawings.

❖            Shall maintain correct filing for reports, RFI and NCRs.

❖            Maintain records of internal control check sheets and reports for web site tests and inspections.

❖            Coordinate with inflammatory disease &  HMCPMT representatives the specified witnessing of scrutiny and tests.

❖            Carry out police investigation thus on make sure that personal area unit operating in accordance with approved technique statement.

❖            Assurances of approved ways area unit being employed for testing and material recipient scrutiny.

 

COPPER PIPE INSTALLATION WWW.HVACMEPCONTRACTORS.COM

   

6.7.         QC Inspector:

❖            To guarantee full compliance of the work with the approved technique statement.

❖            Responsible for all the scrutiny and witness for the several works.

❖            Monitor all appointed activities and make sure that work execution complies with the project specifications, codes, and standards and alternative relevant project documents whenever needed.

❖            Ensure that final revisions of search drawings area unit on the market at web site throughout scrutiny.  

❖            Ensure that the materials being delivered to web site and used area unit in accordance with the project specifications and approved material submittal and material receiving RFI.

❖            Shall be liable for the scrutiny, preparation of RFI all documents and collection them for the inclusion within the final documentation package.

❖            To maintain comprehensive scrutiny and check records for the aim of reference and documentation.

❖            Ensure arrangement of latest discharged for search drawings and specifications.

 

6.8.         QC Inspector:

❖            The following duties apply to each continuous and periodic refrigerant copper pipe brazing scrutiny.

❖            Review and perceive the applicable parts of the approved plans, specifications, field changes and alternative approved documents.

❖            Approved search drawings, erection drawings, and documented codes and standards should even be reviewed and understood.

❖            For structural plate, conduct a radical visual examination of edge surfaces for any visible lamination discontinuities.

❖            Verify that each one applicable journeyman, attachment operator, and tack journeyman qualifications area unit on the market, current, and adapt to AWS and project specific necessities.

❖            Verify that a written attachment Procedure Specification (WPS) is offered on web site for every sort of weld, that the WPS is in compliance with project and AWS necessities, which the WPS has been approved if needed by the development 

❖            Verify that each one attachment consumables go with the approved documents and therefore the approved WPS. Verify that each one conductor materials area unit properly hold on.

❖            Verify that joint preparation, assembly follow, attachment techniques, journeyman performance meet the necessities of the approved documents, WPS, and AWS.

❖            Conduct visual scrutiny of the work: Verify size, length, weld profile and placement of all welds. Verify that each one welds adapt to the necessities of the AWS code and therefore the approved documents.

   

6.9.         Safety Manager/Engineer:

❖            Safety manager shall review  Safety action arrange that has to be enforced and ascertained in relation with the erection works throughout the execution. He can review the applications for work permits if needed by  Safety department.

❖            He can make sure that the work is performed below the  Safety measures approved  Safety arrange.

❖            He can maintain continuous  Safety inspections of the location activities and train the concerned personnel on routine to forestall accidents, personnel injury or property harm.      

 

6.10.      Safety Inspector:

Safety Inspector shall be liable for following items:

❖            He can ensure that each one relevant works area unit applied below approved CSSP.

❖            He can ensure that each one staff have correct PPEs.

❖            He can turn out the  Safety Risk Assessment before work commencement and can determine the hazards before begin the activity.

❖            If for any reason the  Safety supervisor believes that the staffs area unit compromised web site   safety in any manner, he has the correct to prevent work, determine specific reasons and report back to the   safety manager so as to require remedial action now.

❖            Ensure all staff area unit properly wise and consulted on   safety matters.

❖            Carry out regular   safety scrutiny, police investigation of all web site areas in coordination with the   safety manager.

    

7.            INSTALLATION METHODOLOGY:

 

❖            Take extreme care to stay refrigerant tubing/piping clean and dry before installation the subsequent procedures ought to be 

❖            Check approval of operating drawings

❖            Check size and route of piping for parturition refrigerant pipe as per approved United Nations agency drawing..

❖            Install the supports for pipe and check the amount.

❖            Clean totally the outer face of pipe and inner face of pipes and fittings by processing air or brushing. before copper joint brazing all cuts pipe ends and significantly those now upstream of devices ought to be fully de-burred and any distortion in bore diameter shall be corrected

❖            Flush the whole pipe system with gas gas at a hundred and fifty – two hundred psig to get rid of all dust within the pipe

❖            Carry out the pressure check by exploitation gas gas at 250psi and for ten Minutes. for check the outpouring and soap answer are going to be applied just in case of leak.

❖            Record the reading within the pressure check report. 

❖            Provide pipe insulation and facing for external refrigeration pipe with the desired insulation material. 

❖            Vacuum the system to zero psi to -14.5 psi (-76 cmHG) and this method continue around ten to twenty minutes. 

❖            Break the vacuum exploitation Refrigerant R-410a up to its standing pressure to Zero (Operation Pressure).  

  

❖            Charge the system with refrigerant up to its standing pressure (operating pressure). 

❖            System is prepared for start-up, commission and record the information.

❖            Use solely refrigeration grade copper tube, properly sealed against contamination. . 

❖            Suitable P-type oil traps ought to be placed at the bottom of every suction riser. 

❖            No lure ought to be placed directly previous the mechanical device. this can be to forestall slugging of the mechanical device with oil or liquid refrigerant unfree there.

 

❖            Suction lines should be insulated with closed cell elastomeric thermal insulation to forestall condensation. Liquid lines need no insulation unless they run through extreme temperature areas

❖            Always confer with the involved engineer for a lot of elaborated piping technique in step with web site applications.

❖            All piping ought to be unbroken short and with as few fittings as doable. this can be to forestall excessive pressure come by the lines. don't clamp the lines along while not insulation, unless it's necessary to use them to supply a device.

❖            Lines ought to ne'er be left loose or unsupported

❖            All Refrigerant line shall be purged with seven Kpa gauge (1.0 psig) dry gas whereas fastening, brazing or attachment connections

❖            Refrigerant piping and tube shall be firmly mounted to a permanent support at intervals half dozen feet (1.8m) following the primary bend in such tube from the mechanical device and at intervals two feet (610mm) of every ulterior bend or angle.

  

❖            Refrigerant piping shall not be placed at intervals a needed exit 

❖            The direction of flow and sort of line shall be indicated on refrigerant piping.

❖            The expertise level of the erectors.

❖            The individual job conditions. 

❖            Before connection two metals along, make sure the surface is free from grease, rust and oxides.