commissioning of water pipeline

If you intend to offer exhibits at the public input hearing, please email your proposed exhibit(s) to the presiding officer at [emailprotected]. 2. (e) Fillers Fillers (other than silica sand aggregate) shall only be permitted if required for a particular project application and be subject to the approval of the Engineer following satisfactory long term type tests (ISO 10952, ISO 10466), for a minimum of 10,000 hours. Plastic piping systems for non-pressure underground drainage and sewerage Polyethylene (PE). Minor drop in pressure shall be compensated by the expansionvessels, but when the pressure reaches 15.0 bar, Pressure Switch PS1 willcut in and jockey pump will start. Renovation of pipelines is less than 0,5 % of the total length of water and sewer networks, meaning that the service life of a certain pipe section is as high as 200 to 300 years. The Contractor shall compact the formation before placing the blinding concrete, when in the opinion of the Engineer the formation density can be improved by compaction. 4. The Contractor shall perform dewatering as necessary to ensure that. After inspection, all packaged items shall be repacked and rewrapped such that the items are sealed to the satisfaction of the Engineer, and stored until ready for use or installation. Hose shall be 25 mm diameter minimum and provided with an adjustable nozzle. Each item of equipment shall be furnished and installed complete with all supports, anchor bolts, stems, stem guides, and appurtenances ready for operation. (i) sewerage and drainage pipelines and fittings shall be designed to carry septic sewage having a maximum hydrogen sulphide concentration of 50mg/l at a temperature of 45C, (j) irrigation pipelines and fittings shall conform to the water supply standards. Where manholes, septic tanks, cesspits, soakpits and other structures are to be abandoned, they shall be emptied of their contents to the approval of the Engineer. Compaction shall be carried out with approved mechanical vibrators. The following procedures shall be followed for dealing with damaged pipes and fittings: 1. Single sized aggregate shall not be used for the pipe bed and surround in conditions where the native soil comprises of sandy, silty or soft material unless it is wrapped in a geotextile filter fabric to prevent migration of fine material from the surrounding soil in to the bed and surround. 4. The Contractor shall provide detailed method statements for his methods of testing access shafts, manholes and pipelines. PROTECTION OF PUMPS (shall be demonstrated) 3. The minimum course length shall be 5 days and the Technician shall have sat and passed an exam in accordance with the GW330 standard of the German Technical and Scientific Association for Gas and Water (DVGW) or an equivalent national body approved by the Engineer. Read the The normal trimming, bead up and full heat soak cycles will be adhered to. Tubing shall be supplied in straight lengths by an approved manufacturer whose identification mark shall appear on each tube at about 0.5 m intervals. (iii) Exposures to ten times the threshold limit value. 3. (c) Treated sewage effluent: Drainage Treated Sewage Effluent. After pipe laying, further special bedding shall be placed and thoroughly compacted to fill the entire space between the pipe and the undisturbed sides of the trench up to a depth of 150 mm above the top of the pipe. (c) Glass reinforcement The glass used for the manufacture of the reinforcement shall be type E (alumina-calcosilicate glass), type C (alkali-calcium glass) or type ECR (alumina-borosilicate glass). Means of testing or guarantee in a shop environment (where practical) and in the field All fixings shall be stainless steel. If the Contractor proposes not to remove the shoring on completion of the permanent work he shall obtain the Engineers prior written approval. The information shall be recorded on forms provided by the Engineer. Flange assembly bolts shall be standard hexagon head machine bolts with heavy hot pressed, hexagon nuts and shall conform to BS EN 1092. Suitable steel road plates shall be provided and maintained where vehicle access is deemed necessary. Ts static thrust at blank ends and junctions kN 1. Flanged joints for ductile iron and cast iron pipes and specials shall be made with rubber joint gaskets and steel bolts and nuts which shall include two washers per bolt. 3. If you need assistance pre-registering to testify, you may have someone register for you, but they will need to provide all the information listed above. The Contractor shall provide the Employer with a 7-year unconditional guarantee against failure of all GRP linings whether caused by defective materials or workmanship. 1 US gallon 3.78541 dm3 b) with the same material specifications; c) with the same pipe wall construction (i.e. 10. The execution of surveys, recording of data and preparation of record sheets shall comply with the following requirements: 3. All hand wheels, headstocks, foot brackets, guide brackets and thrust tubes shall be cast iron. Each link shall be provided with bronze bushings at each pivot point. This risk assessment shall meet but not be limited to the requirements of this Part of this Section. Specification for textile glass rovings, BS EN 14118 .. Reinforcement. To contain the flowable fill along long open trenches or open ended structures in stages, the end points shall be adequately bulkheaded to prevent movement. Admixture containing calcium chloride will not be permitted. Pipes and fittings shall be homogeneous throughout and free of visible cracks, holes, foreign inclusions, voids and other injurious defects. Mitred bends and fittings shall be fabricated from pipes which have been successfully pressure tested. (vi) reference to not less than three Qatar National Grid survey control points and shall be proven to have standard errors of not more than 0.08 m. (e) manhole precast chamber rings in place before internal linings and external coatings are applied, (g) formwork and reinforcing steel before concreting, (h) before backfilling of permanent Works. (c) The Contractor shall remove from Site any pipe or appurtenance which in the opinion of the Engineer is so damaged as to be unfit for incorporation in the Works. The results of these tests shall be made available to the Engineer who shall also be allowed to witness some or all of the tests. The Contractor shall confine his operations to the working areas available to him for the construction of the Works particularly where this is located in roads or in other places to which the public has free access. United States, Email:phmsa.pipelinesafety@dot.gov The term necessary support of excavations covers all normal methods of temporary support including timber, concrete, steel sheet piling, steel trench sheeting or other materials as may be approved by the Engineer. 3. In no case shall the cover to the reinforcement be less than 25 mm. 1. 4. 4. Where caps are fitted they shall be supplied complete with operating tee key. 1. All liners shall comply with the following standards: 4. ", Basav Sen, the climate justice policy director at the Institute for Policy Studies, Web The most important basis of commissioning for any new component or system is the set of contract documents prepared. All materials used in manufacture of the penstocks shall conform to the following minimum standards unless otherwise specified: Cast Iron BS EN 1561 Grade 250 Gunmetal BS 1400 Grade LG2 Aluminium Bronze BS 2872 Grade CA104 Stainless Steel BS 970 Pt. Pipelines shall be adequately restrained before being put under test except as hereinafter detailed. No pipe shall be rolled into place for lowering into the trench except over suitable timber planking free from roughness likely to damage any coatings. Unless otherwise specified herein or elsewhere in the Specification, designated in the Project Specification, or directed by the Engineer, the material, equipment and systems to be provided under this Section shall: 1. (i) Stencilled in legible letters the pipe identification number on the outside at each end. Thereafter the final tightening of the nuts shall be effected by torque spanners in such sequence that diametrically opposite nuts are tightened together to achieve the manufacturers recommended torque. No failures shall be below the lower 95% confidence limit of the type test regression line. The calculated failure strain at 60 years from the results of the quality control test using the least squares method shall not be less than 0.85%. Whats New: EPA recently estimated there are 9.2 million lead service lines (LSLs) in the nations drinking water infrastructure based on information reported by states and water utilities. All internal and external protection membranes to the concrete shall be sealed around the pipe openings as recommended by the membrane manufacturer. Pipelines shall be tested in accordance with Subpart 4.5. On completion of the wrapping the surface shall be smoothed to ensure completely sealed overlaps and the absence of air pockets under the tape. 3. To testify at a telephonic public input hearing, you must pre-register by 12 p.m. on Wednesday, July 19, 2023. 2. (v) The layer shall be built up in layers of Type E or ECR acid resistant glass chopped fibres. 3. The frames for TSE chambers shall provide a minimum access opening of 675mm square. 6. (h) they shall be capable of withstanding a 95% lower confidence strain of 0.85% over 60 years without failure or cracking when tested in accordance with the strain corrosion type test requirements specified herein. Each coupling shall consist of a steel middle ring, two steel followers, two gaskets, and the necessary steel bolts and nuts to compress the gaskets. 5. Instead a formed bend or elbow should be welded in the pipeline in order to prevent excessive stress. 1. 3. Direction arrows clearly indicating 'open' and 'closed' positions shall be provided on the actuator or cast on the handwheel. Flanges shall comply with BS EN 1092-2 and shall be PN16 unless a higher pressure rating is detailed elsewhere. All stub pipes and pipes built into manholes for future connections are to be sealed with an approved stopper, obtained from the same manufacturer as the pipe. 1. 3. Aluminium bronze shall conform to BS 2872 Grade CA 104. 18. 1. 5. Headstocks shall incorporate a valve position indicator. 1. They shall not support the growth of bacteria and shall not adversely affect the potable qualities of the water that is to be transported. The precast cover slab shall be seated on the walls using sand/cement mortar. The cover slab shall comply with Specification Clause 4.4.1.9. (d) if not on pallets or not crated, stacked one above the other as follows: in accordance with the manufacturers recommendations but not to a greater number of tiers than the following: pipes 900 mm diameter 2 tiers, < 900 mm 600 mm diameter 3 tiers, < 600 mm diameter 4 tiers, (i) suitable protective packing shall be placed between tiers to the approval of the Engineer, (e) if spigot and socket, stacked so that successive pipe layers have sockets protruding at opposite ends of the stack, (f) with pipes of different sizes and thickness stacked separately. 12. 3. The resin content shall not be less than 7% of the weight of the sample as determine by test method D2584, 1. The Qatar Petroleum (QP) (onshore) Engineer shall be notified a minimum of 24 h in advance, to witness the backfilling operation, (i) damage to the external protective wrapping to the gas or oil pipeline shall be reported promptly to the QP who will arrange for the damage to be inspected and repaired in strict accordance with QP (onshore) procedures at the Contractors cost, (j) the Contractor is to provide constant competent supervision whilst work is carried out next to the existing gas or oil pipelines, (k) when the works reach 15 m from the existing gas or oil pipeline, the Contractor shall contact the QP (onshore) Engineering Superintendent, who will arrange the necessary permit to work. A liner check shall be carried out for one in every 100 of each type and size of manufactured item. 18. Flanged valves shall be faced and drilled minimum PN 16 standard and shall have face-to-face dimensions of standard sluice valves. (c) The difference between two single bead widths shall not exceed 10% of the double bead width. Alternatively jointing system for flanged pipes, incorporating rubber rings, may be approved by the Engineer. 1. Precast concrete manhole rings shall be manufactured using Grade C50 SRC concrete. A five-day hearing over Microsofts $70 billion acquisition, which the Federal Trade Commission hopes to block, began Thursday in federal court. Despite opposition from climate and Indigenous groups, U.S. regulators on Wednesday gave the Mountain Valley Pipeline developer a green light to In the case of spigot and socket pipes with flexible joints the concrete protection at each joint shall be interrupted in a vertical plane at the edge of the socket by a strip of fibreboard or other material approved by the Engineers Representative and of the following thickness: Up to 300mm nominal bore - 13mm Over 300 and up to 600mm nominal bore - 25mm Over 600 and up to 1200mm nominal bore - 38mm Over1200 and up to 2000mm nominal bore - 50mm. 14. 5. All expenses incurred in obtaining samples for testing shall be borne by the Contractor at no additional cost to the Contract. 5. Certain procedures should be followed during testing and commissioning. (c) plasticity index of not more than 10. Joints shall be of the O ring or rolling type, and shall incorporate a soft or flexible control register to help to locate the joint. 1. All pipes shall be clearly marked to indicate the type of lining as follows: 1. Ensure that the system installation is complete and mechanical completion is Pipes greater than 1200mm diameter shall be firmly supported on precast concrete blocks and separated from them by saturated softwood packing 38mm thick. ABOUT US| Period under review Everite and, The Member and Geographic Activities Board (MGA) shall be chaired by the vice president for member and geographic activities as provided in the bylaws and shall consist of. PRE-COMMISSIONING 2.1 Filling 2.2 Pipeline Cleaning 2.3 Pipeline Gauging 2.4 Hydro-testing 2.5 Points to Note 3. 8. Pipeline A red flag must be clearly displayed by all vehicles when carrying explosives. 1. The average deflection of a length of pipes shall not exceed 3 %, and every pipe shall be shown to exhibit a deflection no greater than 5 %, whichever is the smaller, at any point. Acceptable PVC pipe shall have common profiles for interchangeability between rough barrel dimensions, couplings, ends and elastomeric gaskets so as to facilitate future repairs. 5. The Contractor shall transport, store, handle and lay pipes in accordance with the approved manufacturers handling and installation specification as approved by the Engineer. WebPipeline Pre-commissioning Procedure Pipeline Flushing/Cleaning is one required method for cleaning pipes and ensuring they are free of natural gas or other Pigging helps Pipeline Cleaning, If the interim report after 75 days is satisfactory the Contractor may request the Engineers approval to use of the material prior to completion of the 100 day acid test. M3 unit mass of Sintakote kg/m KL2 minor loss coefficient, L length dimension or length of pipeline m or mm Gaskets to be 3mm thick self-energised EPDM or nitrile rubber (NBR) with embedded stainless steel inlay O rings. "President Biden cannot claim to be a climate leader while giving free passes to deadly gas projects. 1. Details of any temporary works which may affect the flow of the wadi shall be submitted to the Engineer at least 14 days before starting work. 1. This is essential to establish the pipeline's fitness for service. Any chambers located along the pipeline to be abandoned shall be demolished and the pipeline ends sealed as specified. 11. (c) paint coating with high build coal tar mastic to give a minimum dry film thickness of 500 m in at least three coats. Where the structure is tanked, Grade 20 OPC concrete shall be used and the tanking shall extend to the concrete surround. (d) The mechanical air blower must be kept close by the manhole or confined space that has been entered. The lift mechanism shall be supplied with a cast iron pedestal, machined and drilled to receive the gear housing and suitable for bolting to the thrust tubes, operating floor or wall bracket. Couplings to be installed underground shall, in addition to any factory applied paint coating, site have one of the following corrosion protection systems: 3. (e) Inspection and testing procedures together with proposals for the independent and on site inspection and testing on welds on a regular basis. The sealing strip shall be capable of withstanding the full hydrostatic head of external ground water to ground level and the maximum internal hydrostatic head, whichever is the greater. The same number shall appear on all record sheets and documents relating to the manufacture delivery and testing of that pipe. WebThe Pipeline Association for Public Awareness promotes open communication and cooperation with local organizations to enhance public safety, improve emergency As a separate layer on the dwg file the Contractor shall mark his proposals for the property connection and this shall be submitted to the Engineers Representative for approval. These meetings help inform the public about safety precautions the industry should take, review lessons learned from past inspections, and improve pipeline construction practices before construction begins. Place backfill material simultaneously in lifts on both sides of pipe and, if applicable, between pipes, conduit, cables, and duct banks installed in the same trench. Markings All pipes including cut lengths and all fittings before dispatch from the pipe manufacturers works shall be indelibly marked as follows on the external and internal surfaces. Coiled pipes shall be coiled such that localised deformation is avoided and the minimum internal diameter of the coil shall not be less than 20 x outside diameter. 11. The Certificate of Completion for the Works or part thereof shall not be issued until the CCTV Survey, including provision of the Survey Report, and any subsequent sewer remedial works have been completed to the satisfaction of the Engineer. All PE electro and butt fusion jointing, PE jointing to GRP and metallic valves and fittings shall only be undertaken by a certified HDPE Welding Technician holding a valid Welder Licence. No individual pit shall be more than 1 mm diameter or 0.5mm depth, (i) wrinkles and indentations shall not be more than 2mm deep and not more than 3 % of surface area affected. No section showing signs of leakage will be accepted. 9. Ferrous pipelines shall be supplied with one of the following corrosion protection systems: 6. 2. 1 lb 0.45359237 kg The colour of the pipe marking shall always contrast with the colour of the pipe. Russell Chisholm, an impacted community member and managing director of the Protect Our Water, Heritage, Rights (POWHR) Coalition, called out President Joe Biden, who campaigned on bold climate pledges and is seeking reelection. Bolt length shall be such that after the joints are made up, the bolts shall protrude through the nut, but not more than 12 mm. Except as otherwise precluded by the Project Specification, the Contractor may propose to excavate with battered side slopes. Exhibitsmust be receivedby July 19, 2023. Electrofusion fittings shall always be packed in a sealed bag or container. En native soil modulus MPa 0.00177185 kg 1 mile 1.60934 km, 1 UK nautical mile 1.85318 km Pressure pipelines and treated sewage effluent pipelines shall be flushed and a swab passed through. The material shall also conform to the requirements mentioned in Clauses 3.3.2, 3.3.3 and 3.3.5 of Section 6. Serving Construction Industry Since 10 years. If in the opinion of the Engineer, the fill is too dry, it shall be watered at the expense of the Contractor in an approved manner during refilling as may be directed by the Engineer. Despite opposition from climate and Indigenous groups, U.S. regulators on Wednesday gave the Mountain Valley Pipeline developer a green light to move forward with construction of the partially completed fracked gas project spanning over 300 miles across Virginia and West Virginia. Such bandaging shall extend 75 mm either side of the edge of the sleeve. Packaged items shall be stored in their original packing and wrappers until ready for inspection by the Engineer. 12. 1) Dry run protection for booster pumps by level switch inside thewater tank. Webproject the sequence of the commissioning of the Units. A layer of E or ECR mat shall than be rolled into the resin using a suitable steel roller to exclude all air and provide complete immersion of the glass fibre in the resin. 1. What is Pipeline Pre-commissioning? Before primer application, all oil and grease shall be removed with an approved solvent. All other requirements shall be as specified in Clause 5.11.2 herein. Cut ends shall be sealed with two layers of resin, the second layer being paraffin wax filled to ensure full cure. Thrust tubes shall incorporate all necessary fixings brackets and spindle guide plates. The Engineer shall be permitted at all reasonable times to visit places of manufacture to witness tests. 2. Where designated in the Project Specification, work on services shall be carried out by the relevant Utility Service Department. They shall be designed to be drop tight in either direction at maximum differential pressure. 3. In the lanes of the road that remain open to traffic, road drains and channels shall be kept free from construction materials, debris and obstruction at all times. Commission All handwheels, headstocks, foot brackets and guide brackets shall be of cast iron. GRP pipes and fittings shall be manufactured by an approved process utilising a mandrel or rotating mould incorporating equipment to accurately control the quantities and placement of all resins, glass and aggregates. Ensure that the system installation is complete and mechanicalcompletion is approved. After completion of the hydraulic testing, the sleeving shall be drawn up over and fixed around the pipe joints. Resins shall be cured to achieve a minimum of 90% of the manufacturers recommended Barcol hardness value. 5. 1. A layer of embedding soil equal to the diameter of pipe shall be laid over the pipe to prevent the lifting of pipe while applying test pressure. 16. Gauges should always be placed at the lower end of the length under test. The pipe manufacturer shall ensure that all the applicable codes and standards are available at their facility for the Engineers reference during any visit or inspection. Where caps are fitted they shall be supplied complete with operating tee key. Once cast into the pipe, the liner shall be permanently and physically attached to the concrete by the locking mechanism and shall not rely on an adhesive bond. 17. (d) Flanged pipe joints shall incorporate an annular gasket covering the full face of the flange. Removal from the trench and relaying shall be an obligation of the Contractor. 10. The body shall be manufactured from close grained cast iron lined with rubber unless otherwise specified. What does commissioning entail? Where a continuous mixer is used, the paddles, baffles and rate of feed of materials shall be adjusted to provide a uniformly mixed material. The completed joints between precast concrete rings shall have an insitu applied sealing strip at least 6mm thick overlapping the GRP liner by a minimum of 150mm each side. On no account shall any excavated material be dozed back when filling trenches in roads and no filling shall be carried out unless in the opinion of the Engineer, sufficient mechanical compactors are in operation on that portion of the work. 1 in3 16.3871 cm3 Ho head under constant flow condition m (e) Restrained mechanical fittings may, with the permission of the Engineer, to undertake repairs and install off-takes or connections on existing pipelines. (a) one test per backfill layer for each structure such as manholes, chambers, and thrust blocks. 6. The Contractor shall submit for the Engineer's approval details of his proposed methods and programme for testing (including details of test equipment) and shall arrange for all test to be witnessed by the Engineer or other person appointed by the Engineer. All geared lifts shall be suitable for auxiliary motor operation. 4. 6. Strain corrosion tests shall be carried for each class and diameter range, where applicable, according to ISO 25780 and ISO 10467, as a type test generally in accordance with ASTM D3262 resp. 11 Shotfirers shall be responsible to the Contractor for ensuring that all explosives and accessories are safely and carefully handled and used, in accordance with the regulations and procedures of the Government, and his own knowledge of correct shotfiring procedure. 1. Call us at, Voluntary Electric Energy Efficiency and Conservation Programs, Energy Efficiency, Conservation & Savings, Energy Efficiency, Conservation and Savings Information, Monthly Remittance and Annual Reporting by Telcos, is seeking a PUC Certificate of Public Convenience. The Engineers approval of the setting out shall be obtained before work on each element commences. Cover slabs shall be precast using Grade C50 SRC concrete and shall incorporate a preformed flat sheet of GRP on the soffit, bonded to a GRP tube to form the access opening. Valves shall have a Teflon seal and seat. Individuals will testify in the order in which they pre-register. The housing shall be cast iron and suitable for mounting in the head angle, gate frame extension or wall mounted bracket. (e) When flanged joints are to be made, secure the bolts and the nuts initially to finger tightness. Keys and prying and lifting bars shall be of approved appropriate design to match the different cover configurations. The Contractor is to agree a screening location with the concerned municipality. 2. The blinding concrete shall be mass concrete Grade 25 SRC concrete and the manhole base slab, benching and insitu concrete walls shall be Grade C40 SRC concrete. HL head loss in meters head of water m After installation, a pipeline undergoes testing and commissioning stages.

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