Lab Chemical Gas Monitors Replacement PWS.pdf

Project Title: Procurement of Fixed Gas Monitors, Sensors, Controllers, and required components for a complete chemical alarm system with technical commissioning and startup, and staff training services.

PART 1. INTRODUCTION AND PURPOSE

The Washington Aqueduct’s (WA) mission is to produce potable drinking water for the nation’s capital and surrounding jurisdictions in Northern Virginia. In connection with its potable water treatment program, the Dalecarlia Water Treatment Plant conducts required chemical analysis of finished water.

Some lab equipment requires hazardous gas for operation that is monitored via the lab chemical alarm system. WA seeks to replace the equipment of the alarm system.

This document outlines the scope, deliverables, and requirements for the procurement of the alarm system for Dalecarlia Water Treatment Plant.

1.1 GENERAL INFORMATION

1.1.1. GOVERNMENT POC

POINT OF CONTACT: Alem Tsega / Scott Buswell Phone: 202-695-0774 / 202-731-9765 E-Mail: alemtsehay.m.tsega@usace.army.mil / Walter.S.Buswell@usace.army.mil

1.1.2. LOCATION: THE WORK OF OUTLINED IN THIS SOW WILL BE PERFORMED AT

Dalecarlia WTP 5900 MacArthur Blvd. NW Washington, DC 20016

PART 2. SCOPE OF WORK

The scope of this project includes the procurement of Fixed gas monitors, sensors, controllers and all components required for the complete operation of the chemical alarm system. Additionally, the scope shall include manufacturer- representative technical commissioning and startup, and staff training services.

PART 3. PRODUCT SPECIFICATIONS

3.1 GENERAL

3.1.1 REQUIRED INFORMATION FOR PROPOSAL EVALUATION

3.1.1.1 Product Data. Provide product data sheet and supplemental information for the fixed gas detector, gas sensors, and controller provided to demonstrate products conform to the salient characteristics listed in this document.

3.1.2 SUBMITTALS

mailto:alemtsehay.m.tsega@usace.army.mil mailto:Walter.S.Buswell@usace.army.mil

3.1.2.1 Shop Drawings. Provide a system wiring diagram showing each device and wiring connection required. Shop drawings shall be validated and updated to as-built conditions after the vendor start-up services.

3.1.2.2 Test Reports. Provide report documenting field calibration results.

3.1.2.3 Manufacturer IOM Manual. Provide electronic copies of all installation, operation, and maintenance manuals for the controller, fixed gas detectors, and gas sensors.

3.1.2.4 See Table 1 for gas monitor quantities.

Sensor Type Quantity

Combustible LEL gas 14

Ammonia 4

Oxygen 1

Hydrogen 2

Carbon Monoxide 1 Table 1. Required quantities of Fixed Gas Monitors

3.1.3 QUALIFICATIONS

3.1.3.1 Manufacturer shall specialize in manufacturing the products specified in this section and shall have a minimum ten years documented experience manufacturing gas detection products. Start-up services shall be provided by the manufacturer or authorized technical representative.

3.2 PRODUCTS

3.2.1 TOXIC GAS DETECTOR (e.g., H2S, O2, H2, NH3, CO, CL2)

3.2.1.1 GENERAL

3.2.1.1.1 Toxic gas detectors shall consist of a transmitter and sensor

3.2.1.1.2 Transmitter shall be housed in a copper-free cast aluminum explosion proof enclosure, with a stainless-steel sensor housing. Enclosure shall provide two ¾-inch NPT conduit entries for field wiring.

3.2.1.1.3 Sensor and transmitter shall carry a 1-year warranty, minimum.

3.2.1.1.4 Transmitter shall accept any fixed gas sensor from the same product line. When the sensor is installed in the transmitter, the instrument shall automatically configure itself by identifying gas type, range, calibration, and alarm setpoints.

3.2.1.2 TEMPERATURE AND POWER

3.2.1.2.1 Gas detector shall operate over an input range of 18-27 VDC.

3.2.1.2.2 Gas detector shall be rated for use in ambient conditions of -40 F to

110 F at 10% to 95% relative humidity.

3.2.1.3 DISPLAY

3.2.1.3.1 Transmitter shall incorporate a LCD display showing gas concentration, engineering units, 0 to 100% bar graph, alarm status, and inhibit status.

3.2.1.3.2 Instrument shall provide an indication of remaining sensor life after span calibration and shall indicate a weak sensor on the display

3.2.1.4 OUTPUT

3.2.1.4.1 Transmitter shall provide a linear 4-20 mA signal, proportional to the detection range of the device; two optional SPST alarm relays.

3.2.1.4.2 Alarm setpoint levels, energized/non-energized mode, and latching/non-latching mode shall be adjustable through the fixed gas detector display. Alarm relays shall be reset through the fixed gas detector display.

3.2.1.4.3 If the sensor is removed while the instrument is powered or if the transmitter-sensor connection is broken, the output shall drop to 3.5 mA unless transmitter output has been inhibited.

3.2.1.5 CALIBRATION

3.2.1.5.1 Zero and span calibration shall be performed through the transmitter’s front panel. Transmitter shall provide a local display of gas concentration during calibration

3.2.1.5.2 Transmitter shall inhibit output during calibration. A time-out feature shall automatically return the unit to normal operation after a preset period of time. Inhibit output level shall be user-selectable.

3.2.1.5.3 Sensor shall incorporate a battery with at least 6 months of life and a non-volatile memory to permit off-site calibration.

3.2.1.6 SENSOR

3.2.1.6.1 Sensor shall be membraned, amperometric, electrochemical cell-type requiring no sample pumps or replacement of membranes and/or electrolyte. Linearity and repeatability shall both be +/- 2% of full-scale.

3.2.1.6.2 Sensor shall incorporate non-volatile memory that stores sensor type, range, calibration, and alarm setpoints.

3.2.2 COMBUSTIBLE GAS DETECTOR (e.g., LEL)

3.2.2.1 GENERAL

3.2.2.1.1 Combustible gas detectors shall consist of a transmitter and sensor

3.2.2.1.2 Transmitter shall be housed in a copper-free cast aluminum explosion proof enclosure, with a stainless-steel sensor housing

3.2.2.1.3 Sensor housing and sensor shall be capable of being mounted up to 50 feet from the transmitter

3.2.2.1.4 Sensor and transmitter shall carry a 1-year warranty, minimum

3.2.2.1.5 Transmitter shall accept any fixed gas sensor from the same product line. When the sensor is installed in the transmitter, the instrument shall automatically configure itself by identifying gas type, range, calibration, and alarm setpoints.

3.2.2.2 TEMPERATURE AND POWER

3.2.2.2.1. Gas detector shall operate over an input range of 18-27 VDC

3.2.2.2.2. Gas detector shall be rated for use in ambient conditions of -40 F to

110 F at 10% to 95% relative humidity.

3.2.2.3. DISPLAY

3.2.2.3.1 Transmitter shall incorporate a LCD display showing gas concentration and engineering units.

3.2.2.4 Output

3.2.2.4.1 Transmitter shall provide a linear 4-20 mA signal, proportional to the detection range of the device.

3.2.2.5 CALIBRATION

3.2.2.5.1 Zero and span calibration shall be performed through the transmitter’s front panel. Transmitter shall provide a local display of gas concentration during calibration

3.2.2.5.2 Transmitter shall inhibit output during calibration. A time-out feature shall automatically return the unit to normal operation after a preset period of time. Inhibit output level shall be user-selectable.

3.2.2.6 SENSOR

3.2.2.6.1 Sensor shall be catalytic bead-type. Linearity and repeatability shall both be +/- 1% of full-scale

3.2.3 CONTROLLER

3.2.3.1 GENERAL

3.2.3.1.1 Controller shall be wall-mounted NEMA 4X with capability to monitor all fixed gas detectors provided under this contract as separate channels. Receiver shall have a dedicated power supply, CPU, and backplane for each of the channels

3.2.3.1.2 All channel settings shall be made through the front keypad. No programmer shall be required for configuration.

3.2.3.2 POWER

3.2.3.2.1 Controller shall use a self-regulating power supply which will accept an AC input supply of 120 VAC or 24 VDC.

3.2.3.2.2 Controller shall accept 2-, 3-, and 4- wire transmitters

3.2.3.3. DISPLAY

3.2.3.3.1 Controller shall provide a LCD display of concentration and engineering units, a concentration bar graph, alarm LEDs, and fail LED.

3.2.3.3.2 For each channel, controller shall provide a common alarm LED, a common alarm inhibit LED, and LEDs indicating AC, loop, and logic power status. Common alarm LED shall be reset with an alarm reset button

3.2.3.4 INPUT/OUTPUT

3.2.3.4.1 Controller shall be able to accept inputs from 4-20 mA signals.

3.2.3.4.2 Controller shall provide one 4-20 mA output per channel

3.2.3.4.3 Controller shall provide 3 SPDT alarm relay contacts, 1 SPDT fault relay contact, and 1 SPDT horn relay contact for each channel. All contacts shall be rated 5A at 30 VDC or 120VAC. All alarm relays shall have user-adjustable set point, reset point, set delay, reset delay. Latching/non-latching mode, energized/non-energized mode, and horn/no-horn.

3.2.3.4.4 To prevent false alarms, output for all channels shall be inhibited for a user-adjustable period upon power up. Controller shall also enable global inhibit output of all channels or individual channels

3.2.4 CALIBRATION KITS

3.2.4.1 Calibration kit shall be provided for each type of sensor. Kits shall be complete with all necessary hoses, regulators, adapters, gages, caps, and plugs

3.2.4.2 Calibration gas and zero-gas cylinder shall be provided for each type of sensor

3.2.4.3 Provide all manufacturer-recommended spare parts for the first year of operation.

3.2.4.4 A hardcase shall be provided to store the calibration and zero gas, and calibration kits for each type of sensor.

PART 4. Execution

4.1 INSTALLATION

4.1.1 Following the award, the awardee shall submit an annotated mark-up of

Government Furnished Drawing 40.14-1.130-98, indicating proposed location of each fixed gas detector/sensor for evaluation for safety and code - compliance for this application.

4.1.2 Installation of the fixed gas detectors, sensors, and controller shall be performed by the government.

4.2 MANUFACTURER START-UP SERVICES

4.2.1. General

4.2.1.1. The work to markup the drawing, commission and startup the system, and train WA’s maintenance team shall be done by a factory-trained and authorized dealer of the equipment manufacturer / manufacturer’s technical representative.

4.2.1.2. The Contractor’s proposal shall include the manufacturer technical representative’s resume, factory credentials, and proposed training plan.

4.2.1.3. The resume shall explicitly document a minimum of three projects of similar size, scope, and technical complexity where the technical representative successfully performed system startup, commissioning, and training services within the last three years.

4.2.2. SITE TESTS: The complete system shall be calibrated and tested by an authorized manufacturer’s representative using calibration gas. Each channel shall be tested separately. Provide a test report to Government documenting the testing and calibration.

4.2.3.1. Conduct a comprehensive visual and physical inspection of all installed field devices (monitors, sensors, transmitters, visual/audible alarms) and control panels. Verify proper mounting, wiring terminations, and grounding prior to energizing the system.

4.2.1.2. Energize the control panels and field network. Verify stable power and internal diagnostics. Update all system software and firmware to the latest manufacturer-approved versions suitable for the operational environment.

4.2.1.3. Perform zero and span calibration on all chemical sensors using strictly unexpired, National Institute of Standards and Technology (NIST) traceable calibration gases. Adjust alarm set-points according to the manufacturer recommended values and industry standards and regulations.

4.2.1.4. Perform End-to-End functional testing. Manually trigger or simulate alarm conditions at the sensor level to verify local horn/strobe activation, control panel enunciation.

4.2.1.5. Identify, document, and resolve any configuration errors, communication faults, or component failures encountered during the testing phase to bring the system to full performance.

4.2.3 TRAINING: Provide training to operations and maintenance staff on the operation, calibration, and maintenance of the units. Training can occur on the same day as the testing / commissioning.

4.2.3.1. Conduct a comprehensive, on-site training session for the facility engineers.

Training must cover system architecture, routine operation, alarm interpretation, calibration, sensor replacement, and emergency procedures.

4.2.3.2. Training shall consist of two (2) training sessions, approximately two (2) hours each, for up to five (5) attendees per session.

4.2.3.3. Record the training for WA staff future reference.

4.2.3.4. Provide written operations and maintenance manual with trouble-shooting

FAQs for the entire system, making sure routine maintenance tasks (including recommended frequency) are included.

PART 5. WARRANTY

5.1 GENERAL

5.1.1. The Contractor shall provide a warranty for all provided parts, as well as all commissioning and startup labor. The warranty period for both parts and labor shall be one year from the date of receipt by the government. All equipment shall be warranted to be free from defects in workmanship, design, and materials. If the equipment fails during the warranty period, the Contractor shall repair or replace the equipment to an acceptable operating condition at no cost to the Government.

5.1.2. WARRANTY PLAN

5.1.2.1. Notification – The Contracting Officer will notify the Contractor verbally or in writing should the need for warranty service arise. All verbal notifications will be followed up in writing to expedite required repair.

5.1.2.2. Priority Service – The Contractor shall perform an on-site inspection to evaluate the situation within four days of notification and determine the course of action. Following the onsite inspection, initial work shall begin within two days and continue until completion.

5.2 PROJECT SCHEDULE & OUTAGES

5.2.1. WA normal work hours are from 6:00 a.m. to 3:30 p.m., Monday through Friday.

Commissioning, testing and training activities shall be performed during weekends or second-shift hours to prevent disruption to normal lab operations. The Contractor shall establish the proposed dates and times for these activities in writing with WA and must receive explicit approval prior to commencement.

5.2.2. Any activity requiring interruption to lab operation shall be coordinated with WA at least 7 days prior to the expected outage. The activity shall not be executed without WA’s explicit approval.

5.3 OPERATIONS AND STORAGE AREAS

5.3.1. If the contractor needs to store equipment or material on site, they must first request permission and receive approval from the Washington Aqueduct Project Manager, in coordination with and subject to approval by the Safety & Occupational Health Specialist in the WA’s Readiness Section. Once a location has been designated, the contractor shall confine all operations (including storage of materials) within the areas authorized. The Contractor shall hold and save the Government, its officers, and agents free and harmless from liability of any nature occasioned by the Contractor’s performance. Parking spaces will be designated by the Government before the start of any work on site. The project manager shall coordinate with the Government to determine the best available time to use the loading dock and freight elevator; ensuring that there are no conflicts that can impact the operation of the plant.

5.4. SITE RESTORATION

5.4.1 The Contractor shall keep the work area, including storage areas, free from accumulations of waste materials. Before completing the work, the Contractor shall remove from the work site and premises, any rubbish, tools, equipment, and materials that are not property of the Government. Upon completing the work, the Contractor shall restore the work area to the original condition, to be approved by the Contracting Officer.

5.5 ENVIRONMENTAL PROTECTION

5.5.1 The Contractor is required to comply with all Federal, State, and Local environmental regulations.

5.6. PERMITS AND LICENSES

5.6.1 The Contractor shall, at his/her own expense, obtain any license or permits required to perform the contract. The Contractor shall comply with all Federal, State, and Local laws, AHJ, and regulations and shall comply with any subsequent changes.

5.7. PROJECT OPERATION

5.7.1. Washington Aqueduct is an operational water treatment plant and a critical infrastructure site and the Contractor’s access to the work area and the execution of the requirements specified herein shall not interfere with the daily operations of the plant or employees.

5.8. QUALITY CONTROL

5.8.2. The Contractor shall be responsible for maintaining adequate quality control to satisfactorily meet the specification of this contract. The government will ensure quality performance through site inspections, and invoice review.

5.8.2. The Contractor shall designate an on-site representative who has the authority to make decisions, monitor the job for safety and act as an official agent for the contractor in the contractual relationship with the government. This representative or a designee shall be capable of telephonic or personal communication during work hours.

5.11 SAFETY

5.9.1 All work associated with this contract shall be conducted in accordance with the

EM 385-1-1.

5.10 SECURITY:

5.10.1 Access: All contractor employees, including sub-contractors, shall comply with applicable installations and facility access policies and procedures. The facilities are Restricted Areas facilities, contractors and sub-contractors shall be admitted through the main security gates at the respective facilities. All contractors and sub-contractors will require a WA ID badge if work period is more than seven days on site. All personnel shall submit the following information to obtain a badge:

5.10.1.1 WASHINGTON AQUEDUCT ID REQUEST & CONSENT FORM will be filled out and signed, providing Employee name, SSN, Date of Birth, Place of Birth, citizenship, complete home address, phone numbers, and signature.

5.10.1.2 Legible copy of driver license (or other approved form of ID)

5.10.1.3 E-Verify certificate for all contractor and subcontractor personnel whose work under this contract will exceed 120 days

5.10.1.4 Contractors will be vetted through First Advantage for a commercial background check

5.10.1.5 SF 85 page 6 (Authorization for Release of Information).

5.10.1.6 If access to automated information systems (AIS) or sensitive areas is required, a more extensive background investigation may be required, including submitting digital fingerprints of persons employed on the project.

5.10.2 Escorted Contract Personnel.

5.10.2.1 For access to WA Facilities and Infrastructure, Contractor personnel who only meet the requirements in paragraph (1) and have not yet been cleared for or issued a WA ID badge must be escorted at all times either by Government personnel or by Contractor personnel complying with paragraph (3) of this clause. Government personnel availability for escorting will be limited and may not be available, therefore Contractors should expect to provide personnel in compliance with paragraph (3) to serve as escorts. All Contractor personnel working at WA Facilities and Infrastructure on a frequent and regular basis are required to submit the documents required in paragraph (1) above and expected to comply with the guidance in paragraph

(3) of this clause.

5.10.3 For Unescorted entry to WA Facilities and Infrastructure

5.10.3.1 All personnel requesting unescorted access to restricted areas of critical infrastructure projects must have a favorable background check completed prior to beginning Contract work on the project. Previously existing background checks must be verifiable through the WA Security Office or the Defense Information System and Security (DISS) after the verification of an existing investigation or the favorable review of their investigation request. In addition to the requirements in paragraphs a-d, in accordance with Engineering Regulation, ER 380-1-18, Section 4, foreign nationals who work on Corps of Engineers' contracts or task orders shall be approved by the HQUSACE Foreign Disclosure Officer or higher before beginning work on the contract/task order. This regulation includes subcontractor employees. The contractor shall submit to the Division/District Contract Office, the names of all foreign nationals proposed for performance under this contract/task order, along with documentation to verify that he/she was legally admitted into the United States and has authority to work and/or go to school in the US. Such documentation may include a US passport, Certificate of US citizenship (INS Form N-560 or N-561), Certificate of Naturalization (INS Form N-550 or N-570), foreign passport with 1-551 stamp or attached INS Form 1- 94 indicating employment authorization, Alien Registration Receipt Card with photograph (INS Form 1-151 or 1-551), Temporary Resident Card (INS Form 1-688), Employment Authorization Card (INS Form I-688A), Reentry Permit (INS Form 1-327), Refugee Travel Document (INS Form 1-571), Employment Authorization Document issued by the INS which contains a photograph (INS Form I-688B).

5.10.4 Employee Identification

5.10.4.1 The Contractor shall be responsible for furnishing an identification badge/card to each employee prior to the employees work on site, and for requiring each employee engaged on the work to display identification. All prescribed identification shall immediately be delivered to the Contracting Officer, for cancellation upon the release of the employee. When the contract involves work in restricted areas, all contractor employees requiring access to those areas are subject to paragraphs (1) (a) thru (d) of this clause.

The identification will meet the following standards:

Badges : The Government will issue an identification badge to each Contractor employee requiring access to the WA based on the length of the project or not to exceed one year. The Contractor shall ensure that all personnel display their badges above the waist on the outermost garment at all times when on Government property. Badges shall not be worn nor displayed except when physically entering or working on Government property. This requirement shall apply to all Sub-Contractor employees if the Sub-Contractor work will exceed a seven (7) calendar day period. Sub- Contractor employees performing work less than seven (7) days must be escorted by Contractors with a Badge and will require an escort and be issued daily visitor badges by the Security Office.

IMPORTANT NOTICE: Per DFARS 252.204-700 Disclosure of Information, WA will not allow release of any unclassified information, regardless of medium (e.g., film, tape, document), pertaining to any part of this contract or any program related to this contract to anyone outside the Contractor's organization. All individuals working on this project will be required to sign the enclosed non-disclosure agreement. This is a preventative measure to avoid the misuse of sensitive information.

5.11 GOVERNMENT FURNISHED DATA

5.11.1 Dalecarlia Water Quality Laboratory Renovation drawings (2003) – to be provided after award.