ECS Bag Change SOW Final.docx

Statement of Work Environmental Control System Filter Changes and Maintenance A. Background

The National Fire Research Lab (NFRL) is a unique experimental facility dedicated to understanding fire behavior and structural response to fire. The NFRL, located in Gaithersburg Maryland, operates an environmental control system (ECS) that treats smoke and combustion products during fire testing. The ECS was provided by Amerex Industries, Inc. in 1998 (trains one and two) and is vital to the mission and operations of the NFRL. An additional ECS was brought online in 2015 (trains three and four) to double the exhaust flow capacity. The system must be run during every fire experiment. The combustion products that are created during a fire test travel through duct work to be treated by one to four scrubbing “trains”. Each train consists of a natural gas preheater, lime slurry dry scrubber, 1020 filter bags, exhaust fan, fan motor and a flue gas exhaust stack. Maintenance and the installation of new parts is required for the efficient operation of the system.

B. Purpose/Objectives

The NFRL requires contractor labor and materials to change out all the filter bags in the bag house of trains one and two, service the pulse jet system, clean the work area, and inspect the bag house structure and systems for deficiencies.

C. Requirements

The Contractor shall provide all labor, materials, and oversight to perform the following services:

1. Contract Kick-Off Meeting and Health and Safety Plan

a. Within five days after contract award, the Contractor shall submit badging applications to the NIST Contracting Officer’s Representative (COR) for all contractor staff that will need to be on-site for the requirement. Please see badging process requirement details in Section G below. Only once badging is successfully completed may the remaining contract requirements be performed. It is expected that badging shall be completed by the contract kick-off meeting identified in the requirement below.

b. At a mutually agreeable time within 3 weeks after award, the Contractor shall participate in a contract kick-off meeting with NIST personnel to discuss specific schedule details, site-access details, and requirements associated with placement of any temporary equipment on the NIST campus. This meeting may take place via video conference.

c. At least two days before the kick-off meeting, the Contractor shall provide a health and safety plan for the work to be performed. The plan shall include safety controls, Personal Protective Equipment (PPE) required for each task, what training has been provided to employees, an emergency response plan, and health and safety recordkeeping processes. The plan shall also address locking and tag-out plans for the ECS; such procedures shall take place before filter bags are changed out. The plan shall also address pulmonary protective equipment which shall be used while working in the baghouse. The plan shall be submitted electronically via email. The contractor shall update the health and safety plan as needed based on discussion at the kick-off meeting and re-submit within 3 days thereafter.

2. Provide Environmental Control System Materials

a. The Contractor shall provide 1,400 Amerex Part No. 101P-C4X2W8Z4DDHH Filter Bags or equivalent. To be considered equivalent, bags shall be 6” diameter x 176” overall length, include a top skirt with snap rings, double disc bottom with 3” wear strip, and be made of 22 ounce woven fiberglass with Teflon B coating and PTFE membrane.

b. The Contractor shall provide 200 Amerex Part No. 101P-A8l1K1T Cages or equivalent. To be considered equivalent, bags shall have a straight flange roll band with a groove, welded on pan, and 20 8-gauge vertical wire stringers with 8” ring spacing. Cages shall conform with the details included in the cage schematic provided as an addendum to this document.

3. Install Replacement Equipment and Service the Environmental Control System

a. The Contractor shall replace 2,040 existing Amerex Part No. 101P-C4X2W8Z4DDHH Filter Bags with a combination of equivalent parts supplied via Requirement 1.a. above and 640 Amerex Part No. 101P-C4X2W8Z4DDHH Filter Bags which will be provided by NIST. Prior to performing any installation under this requirement, the Contractor shall confirm that the parts are correct for the equipment, on-site, and safely accessible.

b. The Contractor shall stage all materials and supplies necessary for this requirement, including the supplies provided by NIST. NIST will provide space under and around the baghouse to stage materials. Extra storage space may be available if needed. The Contractor shall provide equipment, such as a telescoping forklift and/or crane, to move materials to the baghouse. The Contractor is responsible for providing appropriately-qualified personnel to safely perform this activity.

c. To perform the installations, the Contractor shall remove the Environmental Control System roof door using a bridge crane supplied by NIST and safe rigging provided by the Contractor to access the bags in each fabric filter module. There are 255 bags per module and 8 modules in all.

d. The Contractor shall remove each bag skirt/cage assembly and discard the old bag as it performs the replacements. Some bags may need to be cut off the cage assembly; the Contractor shall do so as required. The Contractor shall minimize dust using trash bags and/or a trash shoot as it performs the replacements. The Contractor shall discard old bags, and trash, in a dumpster supplied by NIST.

e. Prior to installing the replacement filter bags, the contractor shall inspect, sand, and clean each of the 2,040 cages. The Contractor shall notify NIST if any of the cages is no longer viable for use; in such cases, the Contractor shall replace the non-viable cage with one of the new cages supplied under Requirement 1.b. above. Any of the 200 new cages not used for this purpose NIST will retain as backstock. All bags and cages shall be installed to Amerex manufacturer specifications or equivalent. Filter bags shall not leak.

f. While performing the bag replacement installation, the Contractor shall inspect all existing venturis for damage and repair the venturis as necessary. The Contractor shall clean and inspect all cell holes, hoppers, and inlet baffles. The Contractor shall address any problems found before the installation of new filter bags.

g. The Contractor shall install venturis, as necessary, to Amerex manufacturer specifications or equivalent. NIST anticipates that existing venturis may be reused. The Contractor shall ensure each bag skirt/cage assembly is assembled properly, according to the manufacturers’ specifications and will not leak.

h. The Contractor shall inspect, clean and repair, as needed, the Environmental Control System roof door and all the air piping and components attached to the door. The Contractor shall ensure all solenoid and diaphragm valves in the pulse jet system work properly and perform repairs as needed.

i. The Contractor shall dispose of waste materials as directed by NIST; NIST will supply disposal services in accordance with environmental laws. Dumpsters will be supplied by the NIST Office of Safety, Health, and Environment (OSHE) and be located conveniently to the bag house. The Contractor shall clean the worksite when all other tasks are completed.

D. Schedule/Deliverable Requirements

Badging Scheduling Appointment Attendance Completion

Within 1 week after receiving notice that badge applicants are eligible

Submission of Health & Safety Plan

Revised version due within 3 days after the Kick-Off Meeting

Provide Environmental Control System Materials (Filter Bags and Cages)

Materials shall be provided no later than 16 weeks after order

Work to be Completed within Three Weeks, maximum, after Mutually Agreed Upon ISD. ISD shall be no later than 1 week after materials arrive.

E. Inspection and Acceptance

1) The work will be inspected by the NIST COR for quality and compliance in accordance with this requirements document. Work will be accepted when all requirements are successfully addressed.

F. Government Furnished Property and Responsibility The Government will provide the following to the Contractor:

1) Provide 840 bags (existing stock).

2) Lock out/tag out service.

3) Operations of the Flue gas cleaning system.

4) Access/egress of the work area.

5) Empty Hoppers.

6) Any safety and/or environmental reports needed.

7) Electric and air service as needed.

8) Washroom facilities.

9) Police and Fire Department services while on campus.

All property that is not used as required under this specifications document shall be returned to the Government in the condition it was provided in.

G. BADGING

All contractor personnel requiring access to any NIST facility must be cleared by the government prior to issuance of a Site Access credential. Failure of contractor personnel to engage in identified security processes will result in a denial of an entry credential and denial of access to this government facility.

The contractor is required to submit completed Limited Access Pass applications for all employees who require access to NIST for this project, who don’t already have a valid NIST badge. All Limited Access Pass applicants must submit a completed DN-52 form to the COR within five (5) days of contract award If the applicant is a Permanent Resident, they will need to attach a copy of their Permanent Resident Card (a.k.a. Green Card) to the DN-52 form. If the applicant is in the U.S. on a work visa, they will need to attach a completed NIST-1260 form and a copy of their passport to the DN-52 form.

Blank copies of the DN-52 and NIST-1260 forms are attached to the Statement of Work for this requirement. DN-52s are typically processed within four business days for U.S. Citizens. The process may be up to two weeks for non-U.S. Citizens. It is the contractor’s responsibility to ensure the badging requirements are addressed without negatively impacting the contract schedule. If a contractor Limited Access Pass applicant does not successfully pass the DN-52 review process, the Contractor is responsible for submitting a new applicant and remaining within contract schedule.

After the DN-52 and/or NIST-1260 form review process is successfully completed, Visitor Pass applicants shall schedule an appointment at the NIST Gaithersburg campus for badging. The badging process includes being photographed. The contractor shall ensure badging appointments are scheduled and attended within one business week after notice that applicants are eligible is received.

When the contract is completed, contractor employees shall return all badges to designated NIST personnel before final exit of the campus.

H. SECURITY

NIST is a Federal facility and access is controlled at all entrances to the campus. Only Government employees may grant access to non-Government employees. All non-Government employees must be registered with security prior to site access. Contractor shall notify the NIST COR a minimum of 72 hours prior to site access. The Contractor shall provide NIST with first and last names, country of citizenship, and whether the individual has a permanent resident card, (a.k.a. Green Card), of all personnel requiring site access. The name provided must exactly match the Contractor employee’s identification. If any individuals are here on a work visa, they will need to complete a NIST 1260 form and return to the COR. Please refer to the following web site for additional Visitor Information http://www.nist.gov/public_affairs/visitor/ Automobile & Personnel Access:

Contractor personnel arriving in cars on their first day must check in at the visitor center to receive a temporary paper badge prior to proceeding to the project site. Hours of operation of the visitor center are 0600-1700. Once in possession of a valid NIST badge, workers may enter via the Main Gate or Gate “C” and proceed to the project site. Note that all automobiles are subject to a random inspection.

Trucks: All Trucks are to enter NIST via “C” Gate along Quince Orchard Rd. between 6:00 am and 3:30 pm daily, and at the main gate off of W. Diamond Ave. between 3:30 pm and 4:30 pm. No deliveries will be allowed after 4:30 pm. “Trucks” include such vehicles as pick-ups with storage compartments, delivery trucks, delivery vans, and tractor center. Trucks arriving through Gate C will be directed to the Building 301 Truck Inspection Station. At Building 301, trucks will be registered, inspected, and the drivers will be granted access. Any truck which exits the installation will have to be re-inspected upon re-entry at Building 301. A vehicle dashboard placard will be placed within the truck. Placards change daily.

NIST Truck Inspection Stations hours are:

6:00am -3:30pm at Building 301 3:30 pm – 4:30pm at “A” Gate – (Main gate) NFRL (Building 205) regular hours are 7:30am – 4:00pm.

I. PERIOD OF PERFORMANCE

All specified tasks shall be completed within six (6) months after contract award. This period of performance allows time for badging, materials ordering, and on-site work.

J. INSURANCE REQUIREMENTS

The contractor shall have insurance including:

1. General Liability Insurance

0. $30,000 for bodily injury per person

0. $60,000 bodily injury per accident

0. $15,000 property damage

1. Worker’s Compensation

1. As required by Maryland law

K. Place of performance

The place of performance shall be the National Institute of Standards and Technology campus at 100 Bureau Drive, Gaithersburg, MD 20899, Building 205, West Baghouse.

L. Addenda

Cage Schematic and Details

8 3/16” ¼” ¾” 5 9/16” 2 ¼” 6 7/16” 8 gauge

QTY

8 gauge 8” 18 ½” 8” 5 7/8” 175 ½”

Ring spacing from the from the roll band is 8 3/16” to 6” then 8” on center as represented on E.

image1.png image2.png image3.png image4.png image5.png