SOW_Rev1.docx

302 Repairs to SG-6 SOW

Building 302, Repairs to SG-6 Statement of Work (SOW)

Background This is a Critical Repair to an 80,000 PPH English Boiler/Cohen Burner (SG-6) that has a burn through on the top of the boiler. This work will include repairs to the flame pattern off the Cohen burner, testing (both gas and oil) and startup of boiler.

This repair will include the removal of the outer skin, fiber board, insulation, and refractory and membrane wall. It will also require the installation of new material to prepare the return of the boiler to service.

Objectives The objective of this work is to make full repairs to the boiler and return to full service.

Scope The contractor is to replace the collar and vanes at the burner inlet with a two piece assembly from Cohen to bring in through manway without pulling off the burner end of the boiler. Once installed adjust the flame pattern back to Cohen/English specification to insure a proper flame patter that will eliminate the hot spot in the fire box. Remove outer skin and insulation to find membrane failure. Repair membrane failure and restore with new material the fiber board, insulation and outer skin. Repair refractory around burner end wall and cracks in the fire box.

The following is a listing for bidding purposes of tasks (as a minimum) to trouble shoot the necessary repairs, make repairs and restore the unit to full service.

Requirements

1. Make necessary Repairs to boiler SG-6

a. Remove outer skin, fiber board and insulation near burn through to locate membrane failure. (Approximately 150 SF)

b. Repair the membrane failure

c. Restore outer wall of boiler with mineral wool, fiber board and outer skin per manufacturer specifications.

d. Install new burner collar and vanes (two piece construction approved by Cohen)

e. Repair refractory at burner end wall

f. Repair refractory in fire box

2. Pressure test boiler once repairs are completed.

3. Test boiler on both fuel sources.

4. Recertify boiler for full operation.

5. Return back to normal service.

All work performed must be done in accordance with English Boiler and Cohen Burner specifications for this boiler. Work performed must be done as required in accordance with ASME “Boiler and Pressure Vessel Code” using Type H Certified welder as required.

All work performed must be closely coordinated with the Plant Shift Supervisor and COR. Each morning upon arrival to building 302 you are to report into the Shift Supervisor. No equipment will be put in service or removed from service without the knowledge of the shift supervisor and the boiler plant operator. Any lock outs applied will be done as a secondary to the NIST primary lock out. Notify the Operator what you require to be locked out and they will take the necessary actions to coordinate.

The contractor shall provide NIST’s COR with a daily activity sheet that shows work performed, equipment used and labor used. The contractor cannot exceed the amount provided on the PO or take direction to make repairs outside of this Scope of Work.

Deliverables The Contractor shall submit all deliverables to:

National Institute of Standards and Technology 100 Bureau Drive Building 301, Room A125 Gaithersburg, MD 20899 Attn: David Henry Email: david.henry@nist.gov

(1) Health and safety plan – shall be submitted within one (1) calendar days after award. (since this is an Urgent Requirement time frames are shortened)

(2) Insurance Certificate – shall be submitted within one (1) calendar days after award.

Place of Performance The National Institute of Standards and Technology at its main campus located at 100 Bureau Drive, Gaithersburg, Maryland.

Period of Performance The Contractor shall have a maximum of eight (8) weeks (56 calendar days) to from the date of notice to proceed to complete all necessary repairs. Contractor shall start repairs within 10 days of award of this purchase order.

Badging The contractor would preferably already have green badge access to the campus to help expedite this requirement. If employees do not have the necessary badging currently in place a full escort will need to be performed during the repairs.

The contractor is required to submit the names of employees being sent on site to make the repairs. Each employee needs to be a US citizen that is coming on site to expedite the temporary badging process.

For temporary badging email COR full name as it appears on drivers license

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 COR a minimum of 72 hours prior to site access. Contractor shall provide COR 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. 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)

End of Statement