{"id":1476,"date":"2021-07-30T17:10:08","date_gmt":"2021-07-30T17:10:08","guid":{"rendered":"https:\/\/35.200.172.55\/?page_id=1476"},"modified":"2021-08-02T06:01:39","modified_gmt":"2021-08-02T06:01:39","slug":"bolt-torquing-tension","status":"publish","type":"page","link":"https:\/\/teccworld.com\/?page_id=1476","title":{"rendered":"Bolt Torquing Tension"},"content":{"rendered":"\n
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Bolt Torquing Tension<\/h1>\n<\/div>\n<\/div><\/div>\n\n\n\n
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Purpose<\/h2>\n\n\n\n
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The primary purpose of this procedure is to achieve the acceptable level of bolted flange joint integrity in the piping system & connection to equipment that has been identified & required tightening by bolt torque control. It is to be operated & carried out for an effective and safe operation.<\/p>\n\n\n\n

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Scope<\/h2>\n\n\n\n

This procedure is applicable to all flanged connections in piping systems and connections to equipment regardless of sizes and classes identified and required tightening by bolt torque \/ tensioning controls at WASIT SKEC Package 3 (Sulfur Recovery Unit SRU), SAUDI ARABIA.<\/p>\n\n\n\n

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DEFINITIONS<\/strong><\/h3>\n\n\n\n

Applied Load The load which we applied by means of a torque wrench. Residual load The load which remains after the torque tightening. Tool Operating Pressure The hydraulic pressure that we applied to a hydraulic torque wrench. Flange tightening Report The report which we submit after the torque tightening. Hydraulic Torque wrench The hydraulic actuated ratchet design torque wrench with square drive and interchangeable castle wrench, which can operate up to maximum working pressure of 10000 psi (690bar).<\/p>\n<\/div>\n\n\n\n

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References<\/h2>\n\n\n\n
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4.1 Saudi Aramco Reference<\/strong><\/p>\n\n\n\n

> <\/strong>SAUDI ARAMCO ENGINEERING STANDARDS SAES-L-100 Applicable Codes & standards for pressure piping Systems<\/p>\n\n\n\n

> <\/strong>SAES-L-109 Selection of pipe Flanges, Bolts, and gaskets<\/p>\n\n\n\n

> <\/strong>SAES-L-350 Construction of plant piping<\/p>\n\n\n\n

> <\/strong>SAES-L-450 Construction of pipelines<\/p>\n\n\n\n

> <\/strong>SAUDI ARAMCO ENGINEERING PROCEDURES SAEP-351 Bolted Flange Joint Assembly.<\/p>\n\n\n\n

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4.2 Industry Coded and Standards<\/strong><\/p>\n\n\n\n

> <\/strong>American Petroleum Institute<\/p>\n\n\n\n

> <\/strong>AOI BULL 5A2 Bulletin on Thread Compounds for casing, Tubing and Line pipe<\/p>\n\n\n\n

> <\/strong>American Society of Mechanical Engineers<\/p>\n\n\n\n

> <\/strong>ASME B16.5 Pipe Flanges and Flanged Fittings NPS 1\/2 through NPS 24<\/p>\n\n\n\n

> <\/strong>ASME B16.47 Large Diameter Steel Flanges NPS 26 through NPS 60<\/p>\n\n\n\n

> <\/strong>ASME B31.3 Process piping<\/p>\n\n\n\n

> <\/strong>ASME B31.4 Pipeline Transportation Systems for Liquid Hydrocarbons and other Liquids<\/p>\n\n\n\n

> <\/strong>ASME B31.8 Gas Transmission and Distribution piping Systems.<\/p>\n\n\n\n

> <\/strong>ASME PCC-1 Guidelines for pressure Boundary Bolted Flange Joint Assembly<\/p>\n\n\n\n

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Vendor Standard For Special Flange Size<\/strong><\/p>\n\n\n\n

Detailed customer specifications and manufacturers’ data sheets shall be referred. In case of any conflict between the documents, the customer specification will always prevail and control<\/p>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Responsibilities<\/h2>\n\n\n\n
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Bolting Supervisor \/ Foreman:<\/strong><\/p>\n\n\n\n

Ensure full compliance by all pre-commissioning foreman, pipe filters, and labor regarding the execution of the work in accordance with manufacturers recommendations and CALEX (IMS) WAIST<\/p>\n\n\n\n

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SKEC Project requirements and specifications<\/strong><\/p>\n\n\n\n

Confirm the availability of all materials, tools, equipment, and qualified personnel who will carry out the work. Ensure compliance by all labor & equipment operators and other associated craftsmen in the execution of the requirements of this procedure, Project Quality Control procedures, relevant drawings, safety procedure, and the CALEX (IMS) WAIST SKEC \/ ARAMCO Project Specifications. Secure all necessary work permits.<\/p>\n\n\n\n

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Quality Control Inspector:<\/strong><\/p>\n\n\n\n

Conduct inspection in accordance with this procedure, Monitor daily bolt torquing and tensioning activities, and verify strict compliance to CALEX (IMS) WAIST SKEC project requirements, specifications, and manufacturer’s recommendations. Prepare daily QC records and final acceptance documentation where ever required.<\/p>\n\n\n\n

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Safety Supervisor:<\/strong><\/p>\n\n\n\n

Check the work areas for any unsafe conditions. Ensure that all safety requirements have been adequately addressed and the work is carried out safely in accordance with CALEX (IMS) WAIST SKEC project safety procedures.<\/p>\n\n\n\n

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Process Engineer:<\/strong><\/p>\n\n\n\n

Prepare and submit Procedure for CALEX (IMS) WAIST SKEC Project review and approval. Provide technical support to site operation group. Provide the latest revision of AFC (Approved for Construction) drawings, procedures, marked-up drawings identifying flanges requiring bolt torque control, material specification standards, and technical specifications. The process engineer shall be responsible for the review of CALEX (IMS) WAIST SKEC Project drawings and data and the resolution of technical work.<\/p>\n<\/div>\n<\/div><\/section>\n\n\n\n

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Objective<\/h2>\n\n\n\n

The objective of this document is to provide guidelines to ensure all bolted joints are leak Proof and fit for purpose through the following: Correct method Correct material Acceptable joint mating surfaces Proper joint alignment Appropriate new gaskets Acceptability of joint mating surface.<\/p>\n\n\n\n

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Qualified Technician<\/h2>\n\n\n\n

Torquing is a specialist skill. The nominated personnel for bolt Torquing & Tensioning will undergo a Hydraulic Torque Wrench Operating course from team Tentec, Manufacturers. Summary qualified personnel together with the limits of their qualifications shall be maintained. Each Person shall carry an ID Badge that indicates the extent of his qualifications.<\/p>\n\n\n\n

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Safety<\/h2>\n\n\n\n

Due to the powered nature of tools, with large force generated from high pressure fluid\/air and electricity strict safety procedure are following by Calex. For understanding the safety precautions Calex gives training to the operators in Hydraulic Torque Wrench operating course. As also Calex will issue operation instructions and operation manuals to the technicians and Supervisors Personnel shall wear basic PPE as per client’s requirement when working in plant. The minimum requirements are:<\/p>\n\n\n\n

1. Safety helmet<\/p>\n\n\n\n

2. Safety boot<\/p>\n\n\n\n

3. Safety glass<\/p>\n\n\n\n

4. One piece coverall<\/p>\n\n\n\n

Additional PPE must be provided depending on the nature of the job and hazards associated with it such as respirator, gas detector, chemical suit, airline, dust mask etc. Appendix II tabulates the counter measure for specific risk.<\/p>\n\n\n\n

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Methods covered:<\/h2>\n\n\n\n

Bolt Torquing \/ Tensioning \/ Tightening flanged joints in which torsional loads are applied to the bolts causing the bolt to stretch, due to the relative movement between the nut threads. Ordinarily, the torque applied should not be outside of the 40-60% of minimum yield range. Tensioning Tightening flanged joints in which an axial force is applied to the bolts causing them to stretch, at which time the nut is snugged and the load is removed. Bolt tensioning is carried out using a hydraulic stud bolt tensioner.<\/p>\n\n\n\n

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Equipment<\/h2>\n\n\n\n

Standard Wrenches & Hydraulic operated torque wrench is used for doing the job. All the torque wrenches are operated either by air or electric and the maximum working pressure is 10000Psi \/690 Bar. For low clearance job directly fit low profile tools are used. Calex has capability to do the job ranges from hexagonal nut size 27mm to 155 mm.<\/p>\n\n\n\n

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A REQUIRED TOOLS AND MATERIALS<\/strong><\/p>\n\n\n\n

Standard Wrenches \/ Ring Spanners Manual Torque wrenches Hydraulic Torque Equipment (combination of air driven hydraulic pump, Sockets, threaded puller and hydraulic hoses Air compressor High pressure air hoses with whiplash arresters Bolts & Nuts \/ Permanent gaskets\/ Marker \/ Approved Anti-seize lubricants Personnel protection Equipment (PPE) Body protection for working at heights and fall. Consumables<\/p>\n\n\n\n

Calibration<\/h2>\n\n\n\n

The following Torque elements will be calibrated as per standard. Manual Torque wrench with adjustable torque scale Pressure indicator gauge in the hydraulic torque pump Pressure indicator gauge in the hydraulic tensioning pump.<\/p>\n<\/div>\n\n\n\n

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Have a project?<\/h2>\n\n\n\n
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We can help you in every aspect of your project. Be it a setup & installation service or just a maintenance work, our experts are specialised in every domain based on your needs.<\/p>\n\n\n\n

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