TERMS OF REFERENCE. Supply and Delivery of Prefabricated Wind Noise Reduction Systems (WNRS) and Equipment Vaults

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1 ANNEX B TERMS OF REFERENCE Supply and Delivery of Prefabricated Wind Noise Reduction Systems (WNRS) and Equipment Vaults 1. INTRODUCTION The Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (hereinafter referred to as the Commission ), intends to conclude a standing contract (hereinafter referred to as the Contract ) with the selected bidder(s) (hereinafter referred to as the Contractor ) for the Supply and Delivery of Prefabricated Wind Noise Reduction Systems (WNRS) and Prefabricated Equipment Vaults. The WNRS and Equipment Vaults are designed for installation at IMS infrasound arrays, residing in varying environmental conditions around the world. The purpose of prefabrication is to reduce the complexity and the duration of on-site field installations, while at the same time achieving greater standardization throughout the network of IMS infrasound arrays. The Commission outlines here the Terms of Reference (ToR) that the Contractor shall use as a basis for supply and delivery of prefabricated WNRS and Equipment Vaults. These ToR define the technical framework of all related activities to be performed during the Work which shall be carried out by the Contractor. The Commission anticipates that based on the Contract, initial orders may be placed for six complete, 4-8 element, 18 m circular design WNRS. In addition, the Commission anticipates an initial order of four fully fabricated Equipment Vaults. The Commission, however, does not guarantee the quantity of equipment to be purchased under the Contract. The Commission will contact the Contractor to provide the WNRS, Equipment Vaults and/or related services hereinafter referred to as the Work. The Commission will issue the Formal Request for Delivery hereinafter referred to as the FRD in writing to order any Work required under the Contract. 2. SCOPE OF WORK The Contractor shall carry out the Work in accordance with these ToR, while doing so in the most cost-effective manner possible. 1

2 2.1 Wind Noise Reduction System (WNRS) The Contractor shall: (a) Manufacture pipe arrays in accordance with the Commission s design as defined in Section 3.1 and Appendix B.1; (b) Provide complete pipe array elements and their individual components, as spares, as needed; (c) Provide packaging of the pipe array components in wooden freight crates; (d) Provide secure and insured storage/warehousing of all materials; (e) Provide on-site installation support services along with field testing of the pipe arrays. The Contractor shall provide pipe array elements, or parts thereof, in the following configurations: m diameter WNRS; m diameter WNRS; m diameter WNRS. The Commission reserves the right to order sets with other numbers of the pipe array elements and specific parts. This will also include different pipe lengths of the WNRS. 2.2 Equipment Vaults The Contractor shall: (a) Manufacture Equipment Vaults in accordance with the Commission s design as defined in Section 3.2 and Appendix B.2; (b) Provide ancillary and spare components as needed; (c) Provide adequate packaging of the vaults to avoid damage during shipping container transport; (d) Provide secure and insured storage/warehousing of the vaults and ancillary materials; (e) Provide on-site installation support services along with field testing of the vaults. The Contractor shall provide Equipment Vaults to include the following: 1. Watertight vaults of approximately 2 m x 2 m x 2 m dimension. These vaults will be completely buried and therefore need internal structural reinforcement; 2. Watertight surface vaults of approximately 1.8 m x 1.6 m x 1.2 m dimension. Surface vaults will be only partial buried and shall be bolted to a concrete slab outside the vault. 3. TECHNICAL REQUIREMENTS 3.1 Wind Noise Reduction Systems (WNRS) The Contractor shall ensure that the prefabricated pipe arrays meet the following 2

3 technical requirements: (a) Following types of pipe arrays: 10 m; 18 m and 36 m diameter WNRS, which shall be designed as circular or close-pack (hexagonal) pipe arrays. Detailed drawings of these arrays are shown in Figures 1 to 7 of Appendix B.1. (b) Compliance with the pipe arrays list of materials in Appendix A.1 and A.2. Slight differences to the list of materials can be proposed as long as the pipe array design is not affected. Any proposed adjustment shall be subject to acceptance by the Commission. (c) All inlet ports shall be constructed using stainless steel or plastic. (d) Where at all possible, press fittings shall be used to avoid unnecessary threads at pipe junctions. All fittings shall be constructed of stainless steel and follow BSP(T/P) standards. Where required, accompanying silicon O-rings or gaskets must be provided to ensure a proper seal. (e) All adapters, ball valves and fittings shall be constructed of stainless steel and follow BSP(T/P) standards. (f) All hardware (screws, nuts, bolts, etc.) shall be made of stainless steel. (g) The pipe arrays shall include either: plastic, brass or stainless steel summing manifolds with the appropriate number of inlets and outlets. All three choices of material should be available as options for the Commission to choose depending on the installation environment. Within the manifolds, all threaded holes shall have flat, uniform mating surfaces to ensure a proper seal between manifolds and fittings. The Contractor shall describe in the Proposal the planned method of sealing the manifold and to provide proper thread protection for when not in use. Particular attention should be paid to the offset distance between each manifold inlet to ensure ease of access to each individual pipe connection, using tools or by hand. (h) Where stainless steel is used, the Contractor shall provide 304 grade stainless steel (with the option of 316 grade stainless steel). (i) The pipe arrays shall optionally include wooden supports (or other dense material) for the pipe arrays or bent riser pipes in case of the underground installation Further to the above, the contractor shall: (a) In some cases, be required to bend a selected number of pipes, (See Figure 7), to avoid obstructions (e.g. trees, rocks, land features, etc.). The Contractor shall describe this process in the Proposal, including required pipe-bending tools, minimum bend-radius of supplied pipe material and methods for field applications. (b) Provide an appropriate list of tools required for maintenance and/ or installation of the supplied components. (c) Provide suggested torque values for connecting all components/fittings that shall allow for the best possible seal without causing damage to the components. (d) If requested by the Commission, provide individual pipes and parts as needed. (e) Provide a statement of origin and delivery lead times if the supply and delivery of components are to be subcontracted by the Contractor, (f) Provide to the Commission with each delivery, a complete set of mechanical drawings, detailing materials used and their origin, components and the full engineering design of the WNRS, according to requirements described in Section

4 The drawings are to be submitted before the initial order is accepted by the Commission For circular pipe arrays the Contractor shall: (a) Provide 36 m diameter pipe-arrays with two types of summing manifold: (i) 18 inlets (1/2 BSP(T/P)) around the main body of the chamber, and 1 outlet (3/4 BSP) at the bottom of the chamber, 8 per pipe array; (ii) 8 inlets (3/4 BSP(T/P)) around the main body of the chamber, and 1 outlet (1/2 BSP(T/P)) at the bottom of the chamber, 1 per pipe array. (b) Provide 18 m diameter pipe-arrays, where summing manifolds shall have 24 inlets with ½ BSP(T/P) thread around the main body of the chamber, and 1 outlet with ½ BSP(T/P) thread for an outgoing pipe at the bottom of the chamber. 3.2 Equipment Vaults The Contractor shall ensure that the prefabricated Equipment Vaults meet the following technical requirements: (a) Types of vaults: watertight vaults of approximately 2 m x 2 m x 2 m dimension. These vaults will be completely buried and therefore need an internal structural reinforcement: watertight surface vaults of approximately 1.8 m x 1.6 m x 1.2 m dimension. Surface vaults will be only partial buried and shall be bolted to a concrete slab outside the vault. (b) Compliance with the Equipment Vaults list of materials as set out in Appendix A.3. Slight differences to the list of materials can be proposed as long as the vault design is not affected. Any proposed adjustment shall be subject to acceptance by the Commission. (c) Vaults shall be fabricated in such a fashion, that they can be palletized and easily housed inside a standard 20 /40 x 8 shipping container. (d) Load-bearing I-bolts or cleats shall be located on top and side surfaces in order to allow pull-chains or straps to be affixed to the vault for safe transportation. (e) A watertight, secured access hatch shall be located on the top surface of the vault and allow enough clearance for one person to enter the vault conveniently. (f) A minimum of two ventilator ducts shall be tapped through the ceiling/top to allow for proper air flow, while at the same time allowing for minimal exposure to weather. The ducts can be side-mounted for surface vaults. (g) Adequate vault insulation to allow for a stable temperature environment. Insulation must be firmly affixed to the inside vault walls and must withstand extreme temperature fluctuations and shipping. Insulation on outside vault surfaces must remain affixed during extreme weather conditions, burial and water inundation. (h) Sound structural support to withstand the weight of the surrounding earth, once buried in the ground. (i) Roof or side through-hole fitting to support a GPS mast of at least 2 m in height. A through-hole-mast connection shall serve as a conduit for required GPS antenna cables. 4

5 (j) Two bulkhead through-hole fittings to allow for conduit and equipment cabling. (k) Emergency means of water evacuation/removal in the case of flooding. (l) All Equipment Vault components shall be manufactured using weather- and corrosion- resistant material. (m) All hardware (screws, nuts, bolts, etc.) shall be made of stainless steel. (n) Where stainless steel is used, the Contractor shall provide 304 grade stainless steel (with the option of 316 grade stainless steel). (o) Watertight seals for pipes and cables (e.g. Roxtec) The Contractor shall: (a) Provide an appropriate list of tools required for maintenance and or installation of the supplied components. (b) Provide a statement of origin and delivery lead times if the supply and delivery of components are to be subcontracted by the Contractor,. (c) Provide to the Commission with each delivery, a complete set of mechanical drawings, detailing materials used and their origin, components and the full engineering design of the Equipment Vaults. The drawings are to be submitted before the initial order is accepted by the Commission. 4. SPARE PARTS The Commission may choose to order spare components required to maintain operability of the WNRS and Equipment Vaults. The Commission may order any single WNRS component or Equipment Vault component at any given time. 5. TOOLS AND CONSUMABLES 5.1 Wind Noise Reduction Systems (WNRS) If requested by the Commission, the Contractor shall provide a tool set for the field installation of each delivery. 5.2 Equipment Vaults If requested by the Commission, the Contractor shall provide a tool set for the field installation of each delivery. 6. PACKAGING, STORAGE AND DELIVERY For each package, a detailed packing list including dimensions and weight shall be prepared and submitted to the Commission prior to shipment. Each crate shall be clearly labelled with an accurate packing list describing the exact contents. If possible, no package shall exceed a height of 2.6 m. The Contractor shall package all equipment in such a manner that it will not be damaged during transport (by land, sea or air). 5

6 The Contractor shall use only International Plant Protection Convention (IPPC) certified packing materials when using wood (i.e. wooden crates or pallets). The Equipment Vaults shall be palletized allowing for easy transport and storage within a standard 20 shipping container. Attention is drawn to technical requirements (c) and (d) of Section 3.2. All WNRS components shall be cleaned before being packed for final shipment. Every Equipment Vault shall be completely cleaned inside and out before being packed for final shipment. If requested by the Commission, the Contractor shall provide storage and insurance covering the packaged equipment. The equipment shall be protected from UV radiation from the sun. The deadline for delivery shall be no longer than three (3) months after release of any FRD, unless otherwise agreed. Delivery shall not be initiated until advised by the Commission. 7. ON-SITE SUPPORT SERVICES 7.1 Wind Noise Reduction Systems (WNRS) If requested by the Commission, the Contractor shall provide on-site field installation or maintenance of any particular WNRS. These on-site support services shall consist of the following: Assembly of 1 (one) complete pipe array on site; Assembly of all complete pipe arrays on site; Testing of the pipe array in accordance with the procedures described in Section 8.1; Training of local staff in the proper assembly, repair and maintenance of the WNRS. 7.2 Equipment Vaults If requested by the Commission, the Contractor shall provide on-site field installation and maintenance of any particular Equipment Vault. These on-site support services shall consist of the following: Assembly of 1 (one) or all Equipment Vaults on site; Installation of sealing material for pipe and cables at one or all Equipment Vaults; Testing of an Equipment Vault in accordance with the procedures described in Section 8.2; Training of local staff in the proper assembly, installation, repair and maintenance of an Equipment Vault. 8. TESTING AND INSPECTION 8.1 Wind Noise Reduction Systems (WNRS) The Contractor shall provide factory and on-site testing services and allow inspection by the 6

7 Commission as described in this Section. The Contractor is required to check the pipe arrays before installation for possible leaks. The pipe array shall be completed and assembled before the test (except for the inlet ports) Factory testing Each pipe (with fittings and ball valves mounted) shall be pressure tested before packing it into wooden crates. Each pipe shall be pressurized for at least 30 seconds with 400 kpa to ensure that it is properly sealed and that there is no hole in the pipe. Each manifold shall be pressure tested for leaks with 200 kpa over a period of 10 minutes and the pressure should not decrease by more than 2 kpa. After the individual components have been tested for leaks, the Contractor shall assemble a single pipe array and all of its components for a system test. This test will ensure that all components of a single array seat and seal properly, while at the same time assuring that there are no leaks. Test equipment provided by the Contractor shall also be assessed at this time. The Commission reserves the right to inspect all components of the WNRS during the testing process and to request test results (data) before final acceptance. The Contractor shall notify the Commission when the WNRS is ready for final factory acceptance testing, in order to facilitate inspection, if needed On-site testing The Contractor shall assemble a single pipe array and all of its components for a system test. This test will ensure that all components of a single array seat and seal properly, and assure that there are no leaks. This test will also determine whether any items were damaged during shipping and need to be repaired. For pressure testing, all pipe ends/adapters must be sealed. A compressor shall then be connected to the pipe that normally connects to the microbarometer / central summing manifold and the pressure in the pipe array increased above ambient by about 200 kpa. The valve to the compressor shall be closed at this point and the pressure inside the pipes observed over an interval of 30 minutes. A decrease in pressure by more than 20 kpa in 30 minutes indicates the presence of significant leaks in the system and is unacceptable. If this happens, a search for leaks shall be conducted after re-pressurising the pipe system. A further test of the system under pressure shall be carried out after all leaks have been repaired. The Contractor shall provide the Commission with all pertinent data recorded during the pressure tests of the manifolds and the single pipe array both at the Contractor s facility and the on-site pressure tests. Data shall be presented in a digital format that can be easily read by the Commission. 8.2 Equipment Vaults Factory Inspection The Contractor shall notify the Commission when the Equipment Vaults are ready at the factory, in order to facilitate inspection, if needed. 7

8 8.2.2 On-site testing The Contractor shall provide on-site testing services as described in this Section. The Contractor shall inspect the Equipment Vault before and after its installation for possible leaks, cracks or any other failures in structural integrity. The Equipment Vault must be completed and assembled before the test (unless an exception is made by the Commission). When requested by the Commission, a test to simulate inundation by water shall be conducted for a suitable period of time. Correct electrical grounding measurements shall also be required to ensure that the Equipment Vault poses no threat to the instruments it houses. The Commission reserves the right to inspect all components of the Equipment Vaults during the testing process and to request test results (data) before final acceptance. 9. REPORTING All reports, documentation and communication shall be in English and shall be submitted in electronic form. 9.1 Task Reports The Contractor shall prepare and deliver a task report within thirty (30) working days after the completion of any on-site support and testing services defined in Sections 7 and 8. The report shall contain: (i) Reference to the FRD, including date of request; (ii) Actions taken and services performed to complete the task; (iii) Tests performed and test results/data sets in digital format, as applicable; (iv) Documentation stating origin of manufacture, materials and parts specifications, along with any accompanying calibration, specification and/or material data sheets; (v) Delivery report ensuring all items arrive clean, prepared and ready for assembly; (vi) Mechanical drawings for all components delivered (described in Section 9.2); (vii) Any other relevant issues and recommendations. 9.2 Mechanical drawings The Contractor shall provide CAD drawings or precise manufacturer drawings of every pressfitting and adapter shown in Figure 4. In addition, any accompanying manufacturer specification sheet will be required. Mechanical drawings will be required for the following press-fittings and adapters: 1. Male/male manifold adapters and press-fittings, that connect the adapter with the pipe (Note 1); degree female press fitting adapter (Note 3); 8

9 3. 90 degree male press fitting adapter (Note 4); 4. Female/female press fitting adapter (Note 5). The Contractor shall provide: (1) mechanical drawings of the 24-way manifold and all accompanying components as shown in Figures 9, 10 and 11, and; (2) a mechanical drawing of the 4-way manifold as shown in Figure 20. The drawings shall depict the manifold and its components exactly as manufactured. Special importance shall be given in the drawing as to how the Contractor intends to create a proper seal between the adapters and press-fittings (that connect to the manifold). The drawings must also show every gasket or sealing compound and/or component that will be used. The Contractor shall provide mechanical drawings and the specification sheets for the 15 mm stainless steel pipes as shown in Figure 4 (Note 2). The Contractor shall provide mechanical drawings of the pipe array as shown on the left hand side of Figure 4. The drawing shall include the precise length of all parts of the pipe array. The precise length of the pipes will depend on the sizes of the manifolds, fittings and adapters. The Contractor shall provide specification sheets for every gasket, sealing compound and glue used for the 18 m pipe array shown in Figure 4. The specification sheets for the gaskets shall contain information about its material, dimensions, temperature and humidity range, UV resistivity, chemical resistance, pressure range, seal-ability. For the sealing compound and glues the specification sheets shall include its material, temperature and humidity range, UV resistivity, chemical resistance. 9

10 APPENDIX A LIST OF MATERIALS A.1 WNRS, PRIMARY COMPONENTS 18-m diameter pipe array (single element, circular): Item Description Figures Quantity 1 Straight male union connector, 15 mm - 1/2" BSPT Stainless steel DN12 pipe, 15.0 x 1.0 mm, 3.0 m deg. female angle adapter, 15 mm - 1/2" BSP, or 90 deg x 15 mm compression fitting socket deg. male angle adapter, 15 mm - 1/2" BSPT 4 5 Stainless Steel Press-Fittings Female adapter, 15 mm - 1/2" BSPT mm diameter heavy duty rubber hose N/A 8m 8 Adjustable stainless steel hose clamps mm diameter N/A 6 9 *Riser pipes or support wooden blocks, app. 250 x 200 x 1 and mm, made of larch or oak, treated with weatherresistant agent, with stainless pipe holders (or other types of supports) 10 **Extension riser pipe, DIN12, 15.0 x 1.0 mm, 1 m, with N/A 96 appropriate threaded fittings 11 Summing manifolds, 24-way, plastic or metal Screened inlet ports plastic or stainless steel In-line ball valve N/A 120 *Optional for above-ground installations. **Optional for underground installations. A.2 WNRS, SPARE COMPONENTS 36-m diameter pipe array (circular): Item Description Figures 1 Stainless steel DN12 pipe, 15.0 x 1.0 mm, 4.5 m 2 Stainless steel DN20 pipe, 22.0 x 1.2 mm or 22.0 x 1.0 mm, 4.5 m 3 Straight male union connector, 15 mm- 1/2" BSPT 4 90 deg. female angle adapter, 15 mm - 1/2" BSPP or 90 deg. 15 x 15 mm compression fitting socket, Straight male union connector, 22 mm - 3/4" BSPT 6 90 deg. male angle adapter, 22 mm - 3/4" BSPT 7 Male adapter, 22 mm - 3/4" BSPT 8 Female adapter, 22 mm - 3/4" BSPT 9 90 deg. male angle adapter, 15 mm - 1/2" BSPT mm diameter heavy duty rubber hose N/A 11 Adjustable stainless steel hose clamps mm diameter N/A 12 *Riser pipes or support wooden blocks, app. 250 x 200 x 100 mm, made of larch or oak, treated with weather-resistant agent, with stainless pipe holders (or other types of supports) 1 and 4 10

11 Item Description Figures 13 **Extension riser pipe, DIN12, 15.0 x 1.0 mm, 1 m, with N/A appropriate threaded fittings 14 Summing manifolds, 18-way, plastic, metal or stainless steel Summing chamber, 8-way, plastic or metal Screened inlet ports plastic or stainless steel 18 *Optional for above-ground installations. **Optional for underground installations. 36-m diameter pipe array (Close-pack, hexagonal): Item Description Figures 1 Stainless steel DN12 pipe, 15.0 x 1.0 mm, 4.5 m 2 Stainless steel DN12 pipe, 15.0 x 1.0 mm, 3.00 m 3 Straight male union connector, 15 mm- 1/2" BSPT 4 90 deg female angle adapter, 15 mm - 1/2" BSPT deg male angle adapter, 15 mm - 1/2" BSPT 6 Straight pipe connector, 15 mm 7 Plug, 1/2" BSPT 8 15-mm diameter heavy-duty rubber hose N/A 9 Adjustable stainless steel hose clamps mm diameter N/A 10 *Riser pipes or Support wooden blocks, app. 250x200x100 mm, made of larch or oak, treated with weather-resistant agent, with stainless pipe holders (or other types of supports) 1 and 4 11 Summing manifolds, 6-way, plastic 8 12 Bent pipes, DIN12, 15.0 x 1.0 mm, 2.56 m 7 13 Screened inlet ports *Optional for above-ground installations. **Optional for underground installations. A.3 EQUIPMENT VAULTS Item Description Figures 1 Vault Enclosure 2 Vault Entry Hatch 3 External Air Inlets/exhaust 4 Bulkhead thru-holes/fittings GPS Mast 6 Bulkhead Cable Thru Fitting 7 Vault Entry Shaft 8 Entry/Exit Ladder N/A 9 Shelf System N/A 11

12 APPENDIX B MECHANICAL DRAWINGS B.1 WNRS, PRIMARY COMPONENTS 12

13 Figure 1 13

14 Figure 2 14

15 Figure 3 15

16 Figure 4 16

17 Figure 5 17

18 Figure 6 18

19 Figure 7 19

20 Figure 8 20

21 Figure 9 21

22 Figure 10 22

23 Figure 11 23

24 Figure 12 24

25 Figure 13 25

26 Figure 14 26

27 Figure 15 27

28 Figure 16 28

29 Figure 17 29

30 Figure 18 30

31 Figure 19 31

32 Figure 20 32

33 B.2 EQUIPMENT VAULTS Figure 21 33

34 Figure 22 34