Attachment1_SOW_W912PA16B0001.pdf

USAG BENELUX

NATO/SHAPE SUPPORT GROUP

ENGINEERING DIVISION

HANGAR # 6 - CHIEVRES AIR BASE

HAINAUT - BELGIUM

STATEMENT OF WORK (SOW)

PROJECT : R-CH-O2-16099-16

TITLE : Installation of Backflow Preventer Devices

LOCATION : Chievres Air Base

GFOQ # 18

Sterrebeek Annex

DATE : July 2016

PERFORMANCE PERIOD : 250 calendar days (Not included the notice to proceed period)

TABLE OF CONTENTS

CHAPTER I : GENERAL

CHAPTER II : TECHNICAL PROVISIONS

SECTION 1: Introduction SECTION 2: Fluid Categories SECTION 3: Protection units SECTION 4: Required protection units and installation requirements SECTION 5: Work to be performed SECTION 6: Deliverables Schedule

CHAPTER I

GENERAL

G-01 : SCOPE OF WORK

A) General work description

The project consists of the installation of backflow preventer devices on potable water ducts in order to avoid contamination.

The site of work is located at: Chievres Air Base, 7950 Chievres, Belgium GFOQ # 18, 7061 Casteau , Belgium Sterrebeek Annex, 1933 Sterrebeek, Belgium

B) Principal features

Principal item to be performed to accomplish the work consist of the following:

1) Installation of backflow preventer devices

The Contractor shall perform all work and assume responsibility for planning, programming, administering, managing, and executing all functions necessary to provide the services specified in this STATEMENT OF WORK (SOW). The Contractor shall conduct work in accordance with this PWS and all applicable United States (U.S.), Belgium, European, and local laws, regulations, standards, provisions, and directives to include applicable publications. The Contractor shall ensure that all work meets the level of service, performance standards, or tolerances specified in the PWS or in applicable referenced documents.

The above general outline of principal features does not in any way limit the responsibility of the contractor to perform all work necessary to achieve the desired end results and to supply all materials and labor required by these specifications and drawings.

G-02 : DRAWINGS AND STANDARDS

A) Drawings

All work under this contract will be carried out in strict conformity with the following drawings, which form a part of these specifications.

DRAWINGS TITLE DATE

See Excel file

B) Specific applicable standards

All Belgian norms and regulations in force concerning the performance of this project shall be applicable.

- NBN EN 1717

- Technical provisions for indoor installations – BELGAQUA last edition

Not limited to those above.

G-03 : GUARANTEE, WORKMANSHIP AND MATERIALS

A) Workmanship and materials

All work done by the contractor will be in strict conformance with the best practices of the trades involved.

The contractor will employ workmen who are skilled in their particular trades.

In particular, all works with potential risk of refrigerants release to the atmosphere should be conducted under the direct supervision or by a person with a category I certificate as specified in the EU regulation (EC) 303/2008 and valid for the Walloon Region area.

All materials will be brand new.

The contractor will in no way use asbestos containing materials for the performance of his work.

The paints will be lead-free.

B) Guarantee

The contractor will guarantee his workmanship and materials for a minimum period of 1 year after the date of final acceptance or for the period as specified by pertinent Belgian laws for the workmanship or materials in question, whichever is longer.

G-04 : SCHEDULING OF WORK

Prior to starting any work, the contractor will furnish the contracting officer, for approval, a detailed schedule showing the successive phases of the work. All interruptions or disturbance in normal functioning of US Government organizations will also be indicated (road closure, water or utility cuts).

The planning of the work must be set up, discussed and approved by the contractor, the building manager and the Contracting Officer’s Representative (COR) before the start of the work. A close coordination with the management and authorities of the base, i.e. Fire Department, is mandatory.

G-05 : AS-BUILT DRAWINGS

The contractor will submit detailed as-built drawings after completion of the project and before submitting the final bill. As-built drawings will be precise and accurate. They will be drawn on BENTLEY MICROSTATION v8 system or any other 100% compatible system. The CD-Rom of the basic project will be given to the contractor for correction at his request.

G-06 : DIGGING PERMIT, UNDERGROUND PIPES AND CABLES

Before starting the earthwork, the contractor will submit a written Digging Permit Request to the COR. The situation drawings and schedule of work to be performed shall be provided to the COR at least 15 days before starting the earthwork. Drawings must be of sufficient scale to clearly show the proposed work. The drawing of existing utilities will be provided to the contractor during contract award. No digging shall occur until written approval is provided by CEPSD, TDPW or DPW.

Additional information (drawings, etc...) about underground pipes and cables can be obtained at the Engineer Division - Hangar 6 - Chievres Air Base.

However, this information is only given as an indication and does not in any way commit the responsibility of the U.S. Government. The contractor will thus be responsible for carrying out the required soundings to verify their exactitude.

The contractor will ensure that no underground pipes or cables of any kind and their accessories will be damaged during the performance of the work. Any repair is done at the contractor’s expense and at the entire satisfaction of the COR.

G-07 : HOT WORK PERMIT

All security measures as stated in the “Règlement Général sur la Protection du Travail” will be complied with. Prior to starting the work, the contractor will ask a Hot Work Permit (for welding, cutting work, etc...) through the COR. This permit will be delivered by the U.S. Army Fire Officer.

In addition, no open fires or burning of trash will be allowed within the confines of the USAG Benelux (NSSG) Community.

Contractors, concessionaires or vendors performing work or conducting business on or in facilities under the jurisdiction of the USAG Benelux Military Community Commander AOR will conform to this regulation. The COR will ensure that a copy of the French or Dutch translation of this regulation is handed to contractors at pre-construction conferences and that all requirements therein are adhered to. Specific requirements and limitations are as follows:

(1) Smoking will be prohibited in the vicinity of hazardous operations and locations.

(2) Waste material and rubbish will not be stored or allowed to accumulate within the building or in the immediate vicinity, but will be removed from the site at least daily.

Rubbish will not be burned on the site.

(3) Contractor materials and equipment will not be stored in a location or manner which will create a fire exposure to facilities adjacent to the project site.

(4) The contractor will provide fire extinguishers at all locations where work is carried out.

(5) In every building operation where a shed, storage, or other shanty is placed, or room or space is used for storage or workshop, the contractor will provide at least one approved portable fire extinguisher in an accessible location.

(6) Flammable liquids and other hazardous materials such as paints, paint thinner, gasoline, asphalt, and tar will be stored in small detached structure or out in the open and not inside main buildings. Low flash point liquid used within buildings will be handled only in approved safety cans.

(7) Adequate ventilation will be provided for paint spraying and operations involving the application of materials using adhesives containing flammable solvents. Such operations will be conducted remote from any potential source of ignition.

(8) Asphalt and tar kettles will be located in a safe place outside of the building.

Such kettles will not be placed on roofs or porches. Continuous supervision will be maintained while kettles are in operation. Metal covers will be provided for all kettles to smother flames in case of fire.

(9) Electrical wiring and equipment for lighting, heating, and power purposes will be installed in compliance with current US and Host Nation Electrical Regulation requirements.

(10) Cutting and welding will not be permitted unless:

a. A valid Hot Work Permit (welding permit) is available.

b. Combustibles have been safely covered or moved away.

c. A fire guard with a serviceable fire extinguisher is posted for the duration of the work and 30 minutes thereafter to assure that sparks or drops of hot material do not start fires.

(11) Fire hydrants will only be used for fire-fighting and training of the local fire and Emergency Services. Water can only be taken from hydrants with the permission of the Community Fire and Emergency Services Office. Parking within 2.5 m (8 feet) of a hydrant is not permitted.

(12) Vehicles and other equipment with fuel driven motors, with mounted and filled fuel tanks will be equipped with 2.5 kg or larger carbon dioxide or dry chemical fire extinguishers.

(13) Gasoline, oil and grease shall not be disposed into drainage systems or public water systems. Oil contaminated areas will be covered with an absorbent material and removed in accordance with the Spill Contingency plan. Any Petroleum, Oil, & Lubricants (POL) spillage will be reported immediately to the DES Fire and Emergency Services Office, DSN 361-5401/5347.

(14) Construction offices, huts, construction vehicles, trailers and supplies will be located at least 10 m from all adjacent buildings.

(15) Access for firefighting vehicles will be provided to the immediate job site at the start of construction and maintained until all construction is completed. Vehicle parking control measures will be established.

(16) Free access from the street to fire hydrants and to outside connections for standpipes or other firefighting equipment, whether permanent or temporary, will be provided and maintained at all times. No materials or constructions will be placed within 10 feet of such hydrants or connections, or between fire hydrants and the center line of the street.

(17) Scaffolding materials or equipment will not block fire escape routes or access routes during performance of projects in occupied buildings.

(18) In all buildings over 30 feet in height, at least one stairway will be provided in a usable condition at all times.

(19) Notification and actions to be taken in case of a fire:

a. Persons who discover a fire shall immediately alarm all personnel in the area, and shall report the fire to the Community Military Police using the nearest telephone.

Military telephone dial 117.

b. The fire shall be reported using the building number. If the fire is outside of a building, the nearest building number shall be given. Stay on the phone until the operator on duty has completely understood and does not have any further questions. After the notification you should immediately ensure all windows and doors are closed and that all personnel have left the area. The responding fire department must be informed if any special danger exists; example: If gas and pressurized containers, or paint and other flammable material are within the range of the fire. Not only acute fires, but also fires which have been extinguished and did not cause any damage must be reported.

c. To ensure smooth notification and firefighting procedures, it is essential to show all employees the location of the nearest telephone, make sure they are familiar with the building number in which they are employed, and inform them of the locations of the fire extinguishers.

Also, for fire safety reasons, hot work permit will not be issued to perform cutting or welding operations before or after USAG BENELUX AOR regular duty hours.

G-08 : ENVIRONMENTAL STEWARDSHIP

All measures will be taken to prevent occurrence of spills during works. When a leak is detected (i.e. fuel leak on field works vehicles or company vans), the contractor will proceed to the immediate clean-up of the spill. Should the spill characteristics exceed the contractors response capacities, the contractor will immediately contact:

1) The Contracting Officer Representative

2) The Chievres Air Base Fire Department (068/ 27 54 01).

3) The USAG Benelux Environmental Division (068 27 5704)

4) The Spill Response Coordinator (068 27 5906)

The contractor must comply with all European, Belgian and regional environmental laws and regulations as well as regulations specified within the Belgian Final Governing Standards

(BFGS). The BFGS is available on request through the COR . BFGS requirements that should be followed include, but are not limited to, the following:

BFGS Requirements

Air:

Any work that may potentially result in the release/recovery/recycling of a refrigerant requires the supervision of a trained refrigerant technician. (C.2.3.6.1.)

The use of the following Ozone Depleting Substances is prohibited: CFC’s, other fully halogenated chlorofluorocarbons, Halons, Carbon tetrachloride, 1.1.1.trichloro-ethane, Carbon tetrachloride, Hydrobromoflurorocarbones, bromochloromethane. (C.2.3.6.5.1) The following use of HCFCs is prohibited: aerosol, solvents, and refrigerants. (C2.3.6.5.2)

Drinking Water:

Only lead-free pipe, solder, flus and fittings can be used to repair water systems and plumbing systems for drinking water. (C3.3.1.11)

Waste Water:

Best Management Practices (Table C4.T1) Protect fueling areas from rain and store spill response equipment nearby.

Construct sediment dams/silt fences around construction sites.

Perform corrosion control activities inside.

Store product drums/materials inside or under cover.

Capture sandblasting media, any paint waste and clean up materials (thinners, rinsates) for proper disposal.

Hazardous Materials (HMs):

HM containers and storage areas must be properly maintained. (C5.3.2) Dispensing and storage areas for flammable liquids must have secondary containments.

(C5.3.2) All HMs must be labeled correctly. (C5.3.9) All persons who use, handle or store HMs must be appropriately trained. (C5.3.10) HMs must be in a locked cabinet/compartment when not in daily use. (C5.3.13.7 and C5.3.13.8.6.1) Non-fixed liquid petroleum gas (LPG) containers must be stored outdoors. (C5.3.13.1) Each HM must have a readily available Material Safety Data Sheet (MSDS) in English OR the predominant language. (C5.2.15)

Hazardous Waste (HW):

HW generated by the contractor will not be stored on Base, even temporarily, and must be disposed of at the cost of the contractor and by the contractor to an authorized facility outside of USAG Benelux.

HW should be segregated by the different hazardous characteristics (corrosive / flammable etc). (C6.3.2.1) All HW containers must be closed, in good condition and with no traces of corrosion, leaks or spills. (BFGS C6.3.4 -> C5.3.2) HW containers must be labeled correctly. (C6.3.4 ->C5.2.8)

Solid Waste:

Solid Waste must be disposed of at the cost of the contractor and by the contractor to an authorized facility outside USAG Benelux installations. It is recommended that the waste is recycled to the maximum extent possible.

Petroleum, Oil and Lubricants:

At a minimum, all personnel handling Petroleum, Oil, & Lubricants (POL) shall be trained annually in the operation and maintenance of equipment to prevent discharges; discharge procedure protocols; general facility operations and the USAG Benelux (Belgian installations) Red Plan (updated regularly). (C9.3.6) If the fueling of vehicles/machines is required on an installation it must take place on an impervious surface that drains to an oil-water separated. (C9.3.8.1.4.2)

Noise:

The contractor shall not cause sound levels in surrounding public place to exceed an established maximum level of 90dB (C10.3.1.)

Breaking and sieving activities shall neither be performed between 1900 and 0700 nor on Saturdays, Sundays or holidays. (C10.3.5.2.1)

Historic and Cultural Resources:

Any discovery of archeological resources shall be reported to the project COR within three business days. (C12.3.8.1)

Asbestos:

There are buildings and structures throughout USAG Benelux that contain asbestos. In particular asbestos can be found in cement piping, cement roofing, boiler gaskets, cement panels, cement chimney inspection holes and thermal system insulations. The identification of asbestos within a building and/or structure will be made within the work specific Environmental Review. Any asbestos that is removed due to work under this contract must be disposed of correctly, at the cost of the contractor, by the contractor and to an authorized facility outside of USAG Benelux.

Spill:

When using and/or storing HMs or POLs the contractor must have the ‘Red Plan’ readily available, in English AND the predominant working language. The Red Plan is different for the Walloon and Brussels regions and is updated regularly.

Work-Specific Environmental Reviews With each Delivery Order (DO) the contractor will receive an Environmental Review that is specific to the requested work (e.g. re-paint building 20006). The contractor must also respect and apply all environmental measures defined in the Environmental Review as it will mention site specific precautions that are not mentioned within this review. The review will be written by the USAG Benelux Environmental Division and communicated to the contractor through the COR.

The USAG Benelux Environmental Management System (EMS)

USAG Benelux Environmental Management System (EMS):

USAG Benelux implemented EMS IAW EO13423, ISO 14001:2004(E), DoD, and IMCOM requirements. An EMS is an overall management system that includes organizational structure, planning activities, responsibilities, practices, procedures, processes and resources for developing, implementing, achieving, reviewing and maintaining the environmental policy of an organization. USAG Benelux and EMS is designed to ensure that all personnel, including contract personnel, whose work activities can cause a real or potential significant environmental impact, are aware of how their work supports the EMS and are competent to perform their roles, responsibilities, and authorities while supporting the Garrison’s mission.

Contractors and their personnel are required to be aware of, and comply with, the Garrison EMS policy and legal and other requirements when performing work at an installation.

The Garrison EMS is explained during the contractor pre-performance meeting and/or in the EMS manual, which may be requested from the Environmental Division. The USAG Commander’s Environmental Policy may be viewed on line. It is required that the project manager of this contract reads the USAG Benelux Environmental Policy that is available publicly on the USAG Benelux homepage using the following web link:

http://www.usagbenelux.eur.army.mil/documents/Policies/BNL_PL17(PWE)EnvironmenalMgt %20System(EMS).pdf

G-09 : SITE MAINTENANCE AND FINAL CLEANING

During performance of works, all measures should be taken to avoid improper temporary storage of waste generated by works. In particular, emphasis will be put on POL (Petroleum, Oil and Lubricants)-containing equipment or soiled waste/hazardous waste (scrap metal, contaminated soil)

As soon as the work is finished, the contractor shall remove all his equipment, excess materials, debris, etc. generated by his work and will evacuate them outside US Government installations.

G-10: COORDINATION IN MATTER OF SAFETY AND HEALTH

A) The law of 04 August 1996 related to the welfare of workers during the execution of their work and the royal decree of 25 January 2001 concerning temporary or mobile work sites are applicable for this project.

In accordance with article 71, §3, of above mentioned royal decree, a project-coordination as foreseen in section III, 1st sub section, of this royal decree has been set up during the elaboration of this project. Therefore, there is a safety and health plan related to this project for these specifications.

The contractor will comply with the recommendations of this safety and health plan (available upon request to the “Engineering Plans and Services Division”, Hangar # 6, Chievres Air Base (David Diricq, EPS Division, tel.068/27.54.46). These recommendations are part of this project.

In application of the same article 71, §3, an execution-coordinator will be designated by the COR for the coordination in matter of safety and health during the execution of this project.

Within 15 days after contract award, the contractor will submit at least 4 proposals of execution-coordinator to the COR’s approval with:

・ the necessary documents for the verification of the compliance with the conditions to exercise the coordinator function (art. 56 to 64 of R.D. dated 25.01.2001 completed by the royal decree of 19.12.2001)

No proposal may emanate from a coordinator working for the awarding firm or for an office on which the contractor has a supervisory position.

The COR has 10 calendar days to choose the execution-coordinator.

The coordinator’s fee is at the contractor’s charge.

2. The contractor has 15 days from the selection of the coordinator to make up and transmit to the COR and to the execution-coordinator a document with all the complementary elements to his bid that could be claimed by the coordinator.

3. The execution-coordinator does not act as a substitute for the COR. He plays the role of an advisor of the awarding party. His mission is the following:

3.1. General obligations from the law of 04 August 1996 and royal decree of 25 January 2001

1. to coordinate the implementation of the general prevention principles described at article 5 of the law of 04 August 1996, during the technical or planning selections, in order to schedule the various simultaneous or consecutive works or phases of work, as well as during the expectation of the duration of these various works or phases of work;

2. to coordinate the implementation of relevant provisions in order to ensure that the contractors properly implement the general prevention principles and execution principles described at articles 4, 5 and 15 of the law of 04 August 1996;

3. to draw up a coordination logbook comprising the elements described at article 33 of the royal decree of 25 January 2001, except for elements dealing with the design of the project, and to update it;

4. to write down the deficiencies of the various parties in the logbook and to notify the C.O.R.;

5. to write down contractors’ remarks in the coordination logbook and leave them for information to the parties concerned;

6. to call and be the chairman of the coordination structure when such a structure has to be set up in accordance with article 37 of the royal decree of 25 January 2001;

7. to draw up an ulterior performance file whose content conforms with article 36 of the royal decree of 25 January 2001;

8. to organize the cooperation and coordination of activities between contractors, including those who follow one another, in order to ensure the protection of workers and the prevention of accidents and professional health hazards, as well as their mutual information;

9. to coordinate the supervision of the proper application of work procedures;

10. to take all necessary precautions so that only authorized people have access to the work site.

11. at the provisional acceptance of the work, to hand over the updated logbook and the ulterior performance file to the COR, and to notify this delivery in a record attached to the ulterior performance file.

3.2. Special obligations within the scope of this project

1. to read and understand these specifications related to the work to be executed, especially the article concerning the safety and health measures to be implemented on the work site in application of the law of 4 August 1996 about the welfare of workers during the execution of their work, and of R.D. of 25 January 2001 about temporary or mobile work sites;

2. to give advice to the COR and to make proposals in due time concerning the implementation and adaptations of the document described at item 2 of above mentioned article, during the previous phase described in that item 2 as well as during the execution of the work;

3. to participate in any meeting to which he is invited by the COR, and to set up himself any useful meeting with the COR, the contractor or any intervening party on the work site, for the execution of his mission;

4. to control the application of the hazards prevention measures described at item 3 of the above mentioned additional article;

5. to write down the contractor’s obligations deficiencies as foreseen in above-mentioned item 3 in the logbook.

4. The contractor applies the hazards prevention measures foreseen in the document described at item 2, adapted if necessary. He has the sections of this document applied by the possible subcontractors if they apply to them.

5. During the execution of the work, the contractor updates the document described at item A, either on his own initiative, when the progress of the work, the identification of unforeseen or insufficiently known hazards, the incoming or outgoing of some parties, or any modification brought to the project or the work justifies, or at the COR’s request. If some update occurs on his own initiative, he informs the awarding party and the execution-coordinator. He takes into account any possible remark expressed by the COR.

In particular, he also provides the following information to the COR with a copy to the execution-coordinator:

name of the subcontractor(s), with their certificate, the nature and cost of the work they are responsible for, the expected starting date and duration;

traffic rules and road signs for the work site, for the public traffic area (automobiles, bicycles, handicapped people…) and for the area reserved for the work and workers, and the access rules;

storage procedures and evacuation of materials and debris;

work planning.

6. The contractor must cooperate to the coordination as described above. To that purpose, he will give to the execution-coordinator, spontaneously or at his request, any information that is indispensable for the good execution of his mission. He will invite him at any meeting where his presence is necessary for the accomplishment of his task. He will participate in meetings where he is invited by the COR or the coordinator.

The contractor will have the obligations of previous paragraph applied by possible subcontractors.

7. The compliance with the obligations described in items 2, 5 and 6 above is an integral part of this project.

The application of hazards prevention measures described at item 4 is also an integral part of the project, provided that these measures do not exceed the general obligations that the law of 4 August 1996 and the R.D. of 25 January 2001 impose to contractors, in particular articles 7 and 15 of the law, and section VI, sub section IV of the decree.

8. The full text related to the coordination in matter of safety and health concerning this project can be consulted upon request to the “Engineering Plans and Services Division”, Hangar # 6, Chievres Air Base (David Diricq, EPS Division, tel. 068/27.54.46).

G-11: ACCESS TO THE MILITARY INSTALLATION

See Clause CCE-225-4001 Installation Clearance Requirements in the administrative/contractual portion of this package.

G-12: ANTITERRORISM AND OPERATIONS SECURITY REQUIREMENT

Access and General Protection/Security Policy and Procedures.

1. The contractor and all associated subcontractor employees will comply with applicable installation, facility, and area commander installation/facility access and local security policy and procedures (provided by Government representative). The contractor will also provide all information required for background checks to meet installation-access requirements to be accomplished by the installation provost marshal office, director of emergency services, or security office. The contractor workforce must comply with all personal identity verification requirements as directed by DOD, HQDA, and local policy. In addition to the changes otherwise authorized by the changes clause of this contract, should the force protection condition (FPCON) at any individual facility or installation change, the Government may require changes in contractor security matters or processes.

2. For Contract That Require Performance or Delivery in a Foreign Country.

DFARS 252.225-7043. The clause will be used in solicitations and contracts that require performance or delivery in a foreign country. This clause applies to both contingencies and non-contingency support. The key AT requirement is for non-local national contractor personnel to comply with theater clearance requirements and allows the combatant commander to exercise oversight to ensure the contractor’s compliance with combatant commander and subordinate task-force commander policy and directives.

CHAPTER II

TECHNICAL PROVISIONS

SECTION 1

INTRODUCTION

In order to guarantee a good quality of the water in the pipes of the buildings, the distribution system of potable water must be protected against contamination hazards due to the mixing of potable water from the mains and other non-potable sources such as non-potable water, solid, liquid or gas.

During the year 2015, the environment department of the USAG BENELUX made up a study on all the distribution networks of potable water of Chievres Air Base, Caserne Daumerie, the American School, and the buildings in Sterrebeek Annex at Brussels.

This study highlighted a number of deficiencies in the various networks of potable water.

All these deficiencies are listed in the Excel spreadsheets attached to these specifications (Attachment 1). The spreadsheets are listed by building.

For each deficiency, one or more pictures have been taken to facilitate the identification of the deficiency. These pictures can be consulted at Hangar # 6, EPS Division, Chievres Air Base.

The report also mentions the type of protection that has been installed and the type of required protection that must be installed by the contractor during the execution of the project.

SECTION 2

FLUID CATEGORIES

Given that all types of pollution do not have the same impact on public health, one must distinguish various hazard levels.

These hazard levels vary according to the quality of the fluid that may come into contact with potable water.

- Category 1: water to be used for human consumption coming directly from a potable water distribution system.

- Category 2: fluid representing no human health hazard.

fluid known as being fit for human consumption, including water taken from a potable water distribution system, which can have undergone a change in taste, odor, color or a temperature change (heating or cooling).

- Category 3: fluid representing some human health hazard due to the presence of one or more harmful substances.

- Category 4: fluid representing a human health hazard due to the presence of one or more toxic or very toxic substances or one or more radioactive, mutagenic or carcinogenic substances.

- Category 5: fluid representing a human health hazard due to the presence of microbiological or viral elements.

SECTION 3

PROTECTION UNITS

Required protections are divided in 5 families:

Fam. A: air gap Fam. B: controllable disconnection Fam. C: non controllable disconnection Fam. D: atmospheric venting principle Fam. E: antipollution check valves Fam. H: disconnection at the outlet

a) Air gap (Fam. A):

Principle: device totally stopping water pressure.

Implies, if necessary, the putting back under pressure of the installation downstream.

b) Disconnection (Fam.B, C):

Principle: includes two non-return valves with intermediate differential pressure area.

In case of siphoning, back pressure or defect to one or both non-return valves, the intermediate chamber opens up, and a disconnection occurs.

c) Non-return valve (Fam. E):

Principle: let water flow in only one direction.

Possible defective valves are not visible from the outside. This is why the covered hazard level is limited.

d) Disconnection at the outlet (Fam. H):

Principle: characterized by a supply of air in case of absence of flow or in case of negative pressure.

Venting openings cannot be blocked.

SECTION 4

REQUIRED PROTECTION UNITS AND INSTALLATION REQUIREMENTS

1. Protection unit Type AA :Unrestricted air gap

Definition An "AA" air gap is a visible unobstructed and complete air gap placed permanently and vertically between the lowest point of the inlet feed orifice and any surface of the receiving vessel that determines the maximum operational level at which the device overflows.

- This protection requires a pump or must be placed above the utilization point. The water in the protection and in the installation situated downstream cannot be considered as potable anymore.

- The free distance (a), measured between the lowest exterior point of the supply pipe (this one must be outside the tank, and the overflow limit must be at least equal two times the interior diameter b, and never less than 20mm. This free distance cannot be modified in case of back pressure.

Product requirements The protection device must conform to NBN EN 13076.

Installation requirements

1. Every float-operated valve or other device which controls the flow of water to a receiving vessel shall be securely and rigidly fixed.

2. Every feeding pipe supplying water to such a valve or other device shall be fixed in its position to prevent it from moving or buckling.

3. The direction of flow from a feed pipe into the receiving vessel with an air gap "AA" shall be into air at atmospheric pressure, downwards and not more than 15° from the vertical.

4. No object shall be closer than three times the diameter of the feed pipe to the inlet pipe or to the vertical projection of the inlet or feed pipe between the pipe and the maximum operational level of the receiving vessel.

5. Where non-circular pipes are used, the bore shall be taken as the internal diameter of a circular pipe having the same cross-sectional areas as the non-circular pipe.

6. The device shall not be installed in locations liable to flooding.

2. Protection unit Type BA :Backflow preventer with controllable reduced pressure zone

The specific characteristics of the "BA" device are as follows :

- p1 - pi > 14 kPa (140 mbar) ;

- connection of the intermediate pressure zone (pi) to the atmosphere when p1 - pi _ 14 kPa (140 mbar) ;

- disconnection by venting the intermediate pressure zone (pi) to the atmosphere when p1 will be up to 14 kPa (140 mbar) ;

- a minimum set discharge flow (backflow rate) ;

- devices that allow verification in every zone of the disconnection and the sealing of the protection devices (obturators, discharge valves).

- this protection must be included in the list of protection certificated by BELGAQUA

- an easily removable filter must be placed on the inlet side of the protection; both must be placed between two valves

- a free space of 150mm must be left all around the protection, except on the back

- the device must be installed horizontally, with visible outlet and faced downwards

- the d distance must be ≥ two times c, with a minimum of 20mm.

Product requirements The protection device must conform to NBN EN 12729.

Installation requirements

- the device shall be readily accessible ;

- it shall not be installed in locations liable to flooding ;

- it shall be installed in an aerated environment (unpolluted atmosphere) ;

- the drain (to be installed) shall be capable of taking the discharge (the drain will be connected to the nearest sewage pipe, a siphon will be installed to prevent odors);

- it shall be protected against frost or excessive temperature ;

- it shall be installed horizontally, with the discharge valve opening downwards. Pressure taps shall make it possible to carry out inspection test without difficulty ;

- it can be installed only for potential backflows not exceeding the discharge capacity of the protection device.

3. Protection unit Type CA :Backflow preventer with different non-controllable pressure zones

The CA device is divided into three zones :

- one upstream zone p1 ;

- one intermediate zone (pi not measurable) vented to the atmosphere ;

- one downstream zone p2.

The device provides disconnection by venting the intermediate pressure zone to the atmosphere when the difference of pressure between the intermediate zone and the upstream zone is less than 10 % of the upstream pressure (pi – p1 < 10 % p1).

It ensures a discharge flow (backflow rate) through the intermediate zone, at least equal to the given discharge flow rate.

Means for the control of the protection device are not included.

- This protection must be included in the list of protection certificated by BELGAQUA

- The protection must be mounted behind a valve with control faucet, and must be fitted with a built-in or added filter.

- a free space of 150mm must be left all around the protection, except on the back

- the device must be installed horizontally, with visible outlet and faced downwards

- the d distance must be ≥ two times c, with a minimum of 20mm.

Product requirements The protection device must conform to NBN EN 12729

Installation requirements

- the device shall be readily accessible ;

- it shall not be installed in locations liable to flooding ;

- it shall be installed in an aerated environment (unpolluted atmosphere) ;

- the drain shall be capable of taking the discharge ;

- the drain will be connected to the nearest sewage pipe, a siphon will be installed to prevent odors ;

- it shall be protected against frost or excessive temperature.

4. Protection unit Type EA : Controllable antipollution check-valve

A controllable mechanical protection device, equipped with one obturator, to permit flow in one direction only.

It will open automatically when the pressure in the direction of flow upstreams of the valve is greater than the pressure downstream.

When the pressure is higher downstream or no flow condition exists the valve is closed by anticipation acting under a force for example of a mechanical assembly or a spring.

- This protection must be included in the list of protections certificated by BELGAQUA

- This protection must be mounted behind a valve. A control opening is mandatory, either between the valve and the protection, or on the protection itself

Product requirements The protection device must conform to NBN EN 13959

Installation requirements

- the device shall be readily accessible ;

- it shall be protected against frost or excessive temperature.

5. EB Protection : Backflow preventer

Mechanical, uncontrollable protection device (cartridge included) fitted with a backflow preventer designed to allow the water flow in just one direction.

It opens automatically, in the direction of the flow, when the upstream pressure is higher that the downstream pressure. When the pressure is higher downstream or when the flow stops, the backflow preventer anticipatively closes under the action of a force, for instance under the action of a mechanical assembly or a spring.

Product requirements The protection device must conform to NBN EN 13959.

Installation requirements

- the device shall be readily accessible

- it shall be protected against frost or excessive temperature

6. HA Protection : End disconnection

The two pressure zones are separated by a backflow preventer The backflow preventer is closed when the flow is zero and the air inlets are open Regular water flow: backflow preventer open and air inlets closed

The protection device must conform to NBN EN 14454.

Installation requirements

- The device shall not be exposed to a continuous counter-pressure

- The downstream pipe shall be flexible and removable

- The device shall be installed vertically

- The device shall be easily accessible

- It shall not be installed in floodable areas

- it shall be protected against frost or excessive temperature

- h > 200 mm beyond the maximum level of the downstream fluid

7. HB Protection : End disconnection

The mobile element closes the air inlets in regular mode and with a zero flow In case of supply depression, the mobile element acts as a backflow preventer and stops the feeding pipe.

The protection device must conform to NBN EN 15096.

Installation requirements

- The device shall not be exposed to a continuous counter-pressure

- The downstream pipe shall be flexible and removable

- The device shall be installed vertically

- The device shall be easily accessible

- It shall not be installed in floodable areas

- It shall be installed in an environment with air (non polluted atmosphere)

- it shall be protected against frost or excessive temperature

- No closing device shall be installed after the HB

- h > 250 mm beyond the maximum level of the downstream fluid

SECTION 5

WORK TO BE PERFORMED

A) The work to be performed by the contractor consists in installing the type of protection submitted in the report for each detected default. All required accessories, supports and pipes for the installation of the required protection will be included/foreseen by the contractor and will conform to all corresponding installation norms. All types of devices and accessories will be easy-maintenance type.

B) For the following critical works listed in the bid schedule, the contractor will have to submit a detailed proposal that describe how he will perform the work to correct the detected deficiency (digging works, hydraulic modifications, conformity with the current Standards, technical datasheet of material…) with the required timeframe in submittal (see SECTION 6):

1) BE215 - Chievres Air Base Commercial - Building 20094 - Wastewater Treatment Plant - Building Supply

2) BE215 - Chievres Air Base Commercial - Building 20191 - EX - Army Lodge - 11- Fire Supply Service

3) BEBE828 - Sterrebeek Annex - Building 80018 - Water Treatment (Meter Building) - Site Supply Point

The submitted designs or solutions to correct each detected deficiencies will be subject to the Engineering Division's approval (or COR).

C) For the work schedule, the contractor will submit to the COR a detailed planning at least 15 days prior to starting any work. The following data and requirement shall be included and performed:

1) The dates of execution for each building, the estimated duration of the work and if a general cut-off of the water distribution is required in the building.

2) All types of protection must be previously submitted to the COR’s approval before starting the work.

3) For the buildings where a water cut-off is necessary, the contractor will inform the COR and the building manager at least one week before the work starts.

4) For each corrected default, the contractor will take one or several pictures, after the work, of the new protection installed. The pictures will then be attached to the Microsoft Excel spreadsheet provided by the COR in a new column called “Pictures of the new installed protection”. The spreadsheet will be updated with the characteristics of the new installed devices.

5) The above-mentioned Microsoft Excel spreadsheet will be provided with the as-built file.

6) The cost of the preparation of the as-built file will be broken down on all items of the bill of quantities.

SECTION 6

DELIVERABLES SCHEDULE

Each report/submittal/request needs to be submitted to the COR.

Paragraph Submittals documents Delivery date

G-04 Work schedule min. 15 days prior to starting any work

G-06 Digging permit request min. 15 days prior to starting excavation work

G-07 Hot work permit request min. 5 days prior to starting concerned work

Utility Service Interruptions request min. 10 days prior to utility service interruption

Technical data sheets of each equipment

Max 30 days after contract award and min 15 days before ordering any equipment

SECTION

Engineering design - Critical works - Detailed proposal to correct deficiency at Building 20094 – Wastewater Treatment plant – Building supply

Max 30 days after contract award and min. 15 days before ordering any equipment in relation with the repair of this deficiency

SECTION

Engineering design - Critical works - Detailed proposal to correct deficiency at Building 20191 - EX - Army Lodge -11- Fire Supply Service

Max 30 days after contract award and min. 15 days before ordering any equipment in relation with the repair of this deficiency

SECTION

Engineering design - Critical works - Detailed proposal to correct deficiency at Building 80018 - Water Treatment (Meter Building) - Site Supply Point

Max 30 days after contract award and min. 15 days before ordering any equipment in relation with the repair of this deficiency

Manufacturer's Literature Not later than 10 days prior to the completion date

Manuals and operating & maintenance instructions

Not later than 10 days prior to the completion date

SECTION

Updated Microsoft Excel spreadsheet with new installed protection devices

After completion and min 10 days before submitting the final bill

G-08 As-built drawings and folder After completion and min 10 days before submitting the final bill