SOW B302 Major Equipment Replacement 3-17-2021 DRAFT.docx

Statement of Work – Building 302 Major Equipment Replacement

STATEMENT OF WORK

BUILDING 302 MAJOR EQUIPMENT REPLACEMENT

March 17, 2022

BACKGROUND

Steam Boilers SG-5 and SG-6 in the Central Utility Plant have exceeded their useful life and need to be replaced. Emergency repairs completed during the last few winters took the boilers out of service, leaving no backup steam generating capacity. Replacement of the boilers will restore the reliability of the Central Plant steam generating capacity and ensure there is adequate backup steam generating capacity in the event of equipment failure.

OBJECTIVE

The objective of this project is to restore the Central Utility Plant steam boiler reliability by replacing aging, unreliable boilers, as well as other plant support equipment and spaces (including feedwater system work, replacement of Motor Control Centers 3c and 3d, and office and control booth upgrades).

SCOPE

General This scope is broken down into multiple Contract Line Item Numbers (CLINs) corresponding to separate work elements. The full scope for each CLIN is made up of three (3) parts, including:

1. The Statement of Work,

2. The specific description of each CLIN, in the SOW; and,

3. The construction drawings and specifications.

This Statement of Work and the description of each CLIN in the SOW may specifically call for the modification of the scope that deviates from the construction drawings and specifications. In these instances, the Statement of Work and CLIN description shall take precedence over the construction drawings and specifications. Note that there is only one SOW and that each CLIN does not have its own SOW.

Alternate Base CLIN’s The requirement includes two (2) Alternate Base CLIN’s:

1. CLIN 0001A – Replace Boilers SG-5 and SG-6; and,

2. CLIN 0001B – Replace Boiler SG-5 and Remove SG-6

The Government will only select one (1) Alternate Base CLIN at the time of contract award. The Alternate Base CLIN that is NOT selected for award will be removed from the requirement and will not be incorporated into the contract documents.

Additive Alternate CLIN’s The requirement includes three (3) Additive Alternate CLIN’s:

1. CLIN 0002 – Feedwater VFD’s,

2. CLIN 0003 – Motor Control Center Replacements; and,

3. CLIN 0004 – Office and Control Booth Upgrades

The Government may choose to award any number of Additive Alternate CLIN’s. The Contractor will only be required to perform Additive Alternate CLIN’s that are incorporated into the awarded contract. Additive Alternate CLIN’s that are NOT selected for award will be removed from the requirement and will not be incorporated into the contract documents.

Approved Outages The Central Utility Plant provides steam, condensate recovery, chilled water, and compressed air services to the entire NIST Campus 24-hours a day, 365-days a year; steam is needed and produced even in the summer and chilled water is required even in the winter. Outages only occur during either the Spring or Fall Site Wide Utility Outages (SWUO) which are scheduled six months in advance and are typically conducted on weekends, during the months of April and October (see “Plant Outages” text box note on drawing M-001, Dwg. 302-539, for days and times).

1) The Contractor shall coordinate all outages with the COR.

2) The Contractor shall plan, schedule, and execute work so outages that impact Plant operations and services will only occur during the SWUOs; separate outages will not be permitted.

a) Note - This will likely mean that pipe isolation valves need to be installed and other system’s (electrical, controls, etc.) provisions need to be made up to six months in advance of new equipment being installed. If done properly, this will permit the new equipment to be installed before the next SWUO without an outage.

Restrictions The Contractor is prohibited from using internal combustion engines inside the Central Utility Plant, even during construction and with additional ventilation provisions. Note - This may impact the equipment typically used for demolition, excavation, lifting, etc.

Asbestos Containing Material No asbestos containing material is expected to be encountered by the Contractor during the performance of this project; abatement of the project site has been completed. Refer to information in specifications Section 011000, page 3, 1.8.C, “Asbestos Materials”.

CLIN 0001A – Replace Boilers SG-5 and SG 6 (Alternate Base CLIN)

1) To perform this CLIN, the Contractor shall utilize the construction drawings and specifications.

2) Boilers SG-5 and SG-6

a) Contractor shall demolish both existing 80,000 PPH boilers SG-5 and SG-6 and install two (2) new 80,000 PPH boilers to replace SG-5 and SG-6 as shown on the solicitation drawings and described in the specifications.

b) Contractor shall provide temporary steam capacity with the temporary boilers and other boiler wing work also identified in the construction drawings and specifications.

3) Boilers 1 through 4

a) Contractor shall upgrade four (4) existing 40,000 PPH boilers with new mud drum heaters and install new fuel oil pumping system.

b) Contractor shall perform all connections, testing of new piping and points of connection, stack emission testing and all other general testing required for safe operation of the new installation with existing systems.

c) Boilers 1 through 4 (40,000 PPH) will only be permitted to be out of service from the start of April and the end of August. Only one (1) boiler will be permitted to be out of service at a time.

d) Contractor shall schedule the work for each boiler with the COR to allow time for the NIST Boiler Safety Inspections within the time period while they are permitted to be out of service, as defined above.

e) Contractor shall only be permitted to work on the fuel oil system from the start of June to the end of August. These are the months that are unlikely to have a natural gas curtailment and require use of fuel oil. September is reserved for NIST Boiler Fuel Oil Run Tests in preparation for future natural gas curtailments, so all four (4) boilers are to be ready and fully operational.

4) Dust Control

a) Contractor shall, at a minimum, install a dust partition between boiler 4 and boiler 5 before performing any demolition.

b) Contractor shall install dust enclosure(s) prior to performing any concrete demolition work (see Detail 1 “Partial Ground Floor Demo Plan” on drawing SD-101).

c) Contractor shall refer to specification Section 015000, 1.4.E, “Dust-Control and HVAC-Control Plan” for general dust control requirements.

d) Contractor shall refer to drawing S-002, “VII Structural Demolition”, Notes G and I for the enclosure and ventilation requirements. Dust partitions and enclosures are not shown on the drawings but are required.

5) Reference Documents for CLIN 0001A:

a) Drawings: Package #1 Consolidated Drawings, “Replace Boilers SG-5 & SG-6,” drawing numbers 302-531 to 302-568

b) Specifications: Package #1 Consolidated Specifications, “Replace Boilers SG-5 & SG-6.”

CLIN 0001B – Replace Boiler SG-5 and Remove SG-6 (Alternate Base CLIN) CLIN 0001B includes the replacement of boiler SG-5 and removal of boiler SG-6 but does not include the purchase and installation of boiler SG-6; the piping, conduit, and other items and services associated with the installation of boiler SG-6 are also not included. There is no separate set of construction drawings and specifications for this CLIN. The scope shown on the boiler drawings will be significantly modified as described below.

1) To perform this CLIN, the Contractor shall utilize the construction drawings and specifications, both as modified by the descriptions herein.

2) Boiler SG-5

a) Contractor shall demolish the existing 80,000 PPH boiler SG-5 and install one new 80,000 PPH boiler to replace SG-5 as shown on the solicitation drawings and described in the specifications.

b) Contractor shall provide temporary steam capacity with the two temporary boilers shown on the drawings.

3) Boiler SG-6

a) Contractor shall demolish boiler SG-6 to allow the installation of new boiler SG-5; however, SG-6 will not be purchased and replaced in this CLIN.

b) Contractor shall not install the piping and conduit runs to or from the services or headers for SG-6 as shown on the drawings.

c) Contractor shall install isolation valves for the future connection for all piping systems and isolation means for other systems (electrical, controls, etc.) necessary to accommodate the future installation of a new replacement boiler SG-6 without any service outages for these systems (except for approved SWUO outages).

i) Isolation valves and means for future connection points are not shown on the drawings.

ii) Isolation valves and means for the future connections include, but are not limited to, short extensions for all systems and services (steam, feed water, blow down, gas, fuel oil, electrical, controls, etc.) shall be installed.

iii) Piping isolations valves are to be a “double block and bleed valve and vent” configurations (two valves with a vent in between to test for valve leakage and a blind flange on the side to the future SG-6).

iv) The isolation valves shall be provided and located such that the future SG-6 can be installed without service outages to the boilers or the COGEN (except for approved SWUO outages). For electrical, controls and other systems this may require junction boxes or other termination/connection points not shown on the drawings.

v) The goal is to minimize the amount piping and electrical work performed in advance for the future boiler SG-6 and to minimize cost without impacting the operation of the existing boilers and COGEN, now and in the future. The purpose is not to extend these systems as close as possible to the future boiler SG-6 to reduce the work when/if boiler SG-6 is installed. It is expected that long runs will be needed to connect SG-6 in the future but they will not be provided in this CLIN.

d) Contractor shall not perform the demolition (related to SG-6 identified on drawing SD-101, Dwg. 301-534) of the existing concrete (slab on grade and pads), the demolition of flooring (tile) and the roof demolition for SG-6.

e) Contractor shall not install the new foundation and patch work identified on drawing S-101 (Dwg 302-535) in the area of SG-6.

f) Contractor shall close the existing SG-6 roof openings and install all the X-Bracing structural steel angles as shown on drawing S-102 (Dwg. 302-536).

g) Contractor shall not install the structural framing (MC) members for the two openings (stack and relocated exhaust fan) that are above SG-6 but are shown on drawing S-102 (Dwg. 302-536).

h) Contractor shall not relocate existing exhaust fan EAF-9 as shown on drawing M-403 (Dwg. 032-548) in the area above SG-6. The fan is to remain in the existing location.

4) Shop Drawings

a) Contractor shall prepare complete shop drawings detailing these pipe isolation valves for future connections and any other provisions for future connection (electrical junction boxes, etc.) of the other systems.

b) Contractor shall submit the construction drawings provided in this solicitation with markups and notes to show items crossed out that are to be deleted and reference where new work is to be seen on the shop drawings.

c) The shop drawings shall have sufficient plan, elevation, sections views and details to allow the Government review and acceptance with the drawing markups, without supplemental information.

5) Boilers 1 through 4

a) Contractor shall upgrade four (4) existing 40,000 PPH boilers with new mud drum heaters and install new fuel oil pumping system per the drawings and specifications.

b) Contractor shall perform all connections, testing of new piping and points of connection, stack emission testing and all other general testing required for safe operation of the new installation with existing systems.

c) Boilers 1 through 4 (40,000 PPH) will only be permitted to be out of service from the start of April and the end of August. Only one (1) boiler will be permitted to be out of service at a time.

d) Contractor shall schedule the work for each boiler with the COR to allow time for the NIST Boiler Safety Inspections within the time period while they are permitted to be out of service, as defined above.

e) Contractor shall only be permitted to work on the fuel oil system from the start of June to the end of August. These are the months that are unlikely to have a natural gas curtailment and require use of fuel oil. September is reserved for NIST Boiler Fuel Oil Run Tests in preparation for future natural gas curtailments, so all four (4) boilers are to be ready and fully operational.

6) Dust Control

a) Contractor shall, at a minimum, install a dust partition between boiler 4 and boiler 5 before performing any demolition.

b) Contractor shall install dust enclosure(s) prior to performing any concrete demolition work (see Detail 1 “Partial Ground Floor Demo Plan” on drawing SD-101).

c) Contractor shall refer to specification Section 015000, 1.4.E, “Dust-Control and HVAC-Control Plan” for general dust control requirements.

d) Contractor shall refer to drawing S-002, “VII Structural Demolition”, Notes G and I for the enclosure and ventilation requirements. Dust partitions and enclosures are not shown on the drawings but are required.

7) Reference Documents for CLIN 0001B:

a) Drawings: Package #1 Consolidated Drawings, “Replace Boilers SG-5 & SG-6,” drawing numbers 302-531 to 302-568

b) Specifications: Package #1 Consolidated Specifications, “Replace Boilers SG-5 & SG-6.”

CLIN 0002 – Feedwater VFD’s (Additive Alternate CLIN)

1) Contractor shall upgrade the current pressure regulating valve system to automated control with Variable Frequency Drives for the three (3) existing feedwater pumps.

2) Work indicated on the contract drawings and specifications for deaeration tank refurbishment and gas regulator upgrades is DELETED from this CLIN.

3) The Contractor shall price and construct the work using the drawings and specifications with these written clarifications on what was deleted.

4) Reference Documents for CLIN 0002:

a) Drawings: Package #3 Drawings, “Feedwater System Modifications,” drawing numbers 302-579 to 302-584

b) Specifications: Package #3 Specifications, “Feedwater System Modifications.”

CLIN 0003 – Motor Control Center Replacements (Additive Alternate CLIN)

1) Contractor shall demolish the existing Motor Control Centers (MCC) 3c and 3d in the boiler room and replace with one new Arc Flash MCC and one Load Distribution Panel without any service outages for these systems except for permitted outages scheduled six months in advance with the COR to occur only during the Spring and Fall NIST Site Wide Utility Outages (see “Plant Outages” text box note on drawing M-001, Dwg. 302-539, for days and times).

2) Contractor shall perform switchover. The switchover shall occur during a site wide outage and shall be closely coordinated with the COR to ensure site load capacity is maintained with enough spare capacity to maintain campus operations.

3) Reference Documents for CLIN 0003:

a) Drawings: Package #4 Drawings, “Motor Control Center Replacements,” drawing numbers 302-587 to 302-589.

b) Specifications: Package #4 Specifications, “Motor Control Center Replacements.”

CLIN 0004 – Office and Control Booth Upgrades (Additive Alternate CLIN)

1) Contractor shall replace and modernize the control booths on both the Chiller and Boiler sides of the plant.

2) Contractor shall upgrade/modernize the shift supervisor’s office including the number of displays and ways of managing the different systems they monitor.

3) Contractor shall install cameras within the plant to observe floor activities during alarms and to enhance security of the plant.

4) Reference Documents for CLIN 0004:

a) Drawings: Package #5 Consolidated Drawings, “Control Booth Replacement,” drawing numbers 302-591 to 302-603.XXXX

b) Specifications: Package #5 Consolidated Specifications, “Control Booth Replacement.”

WORK REQUIREMENTS

A full range of construction activities will be required under this contract, including, but not limited to:

· Removal of existing boilers, burners, economizers, fuel oil pumps, controls, and associated piping.

· Installation of new industrial water tube boilers, burners, economizers, fuel oil pumps, and drum heaters for existing boilers, controls, chemical feed equipment, and associated piping.

· Provision of temporary boilers to provide steam capacity during work on existing plant boilers.

· Modifications to boiler feedwater distribution.

· Modifications to boiler feedwater pumping.

· Electrical demolition and provision of electrical work.

· Hazardous material precautions.

· Painting.

· Cleanup.

· Associated incidental work.

DELIVERY

Deliverables are specified by the construction documents for each CLIN. Deliverables common to the overall contract include:

GOVERNMENT FURNISHED PROPERTY, MATERIAL, EQUIPMENT, OR INFORMATION

Government furnished property, material, equipment, and information is identified in the construction documents.

SECURITY

All contract employees are required to obtain a Green NIST site access/PIV badge for this contract. A NIST issued security badge is required for campus physical access. Work under this contract occurs in non-public areas of Building 302, the Central Utility Plant (CUP). The contractor is responsible for Quality Control of all the badge access forms submitted. This includes checking the information filled in on the form against the source document (Passport, Driver’s License, Social Security Card, etc.) for correctness. Incorrect information submitted on the badge forms may require the process to restarted, delaying the badge for months. In addition, the contractor is required to track the badges requested using a spreadsheet that shows the badge type requested, the date requested, the date received and the expiration date by employee and subcontractor. Update and resubmit the tracking spreadsheet weekly while there are pending badges.

See specification section 011000 – Summary for additional badging requirements.

Please note the timeline below to obtain a Green NIST site access/PIV badge. Paper badges for visitors are limited to 10 per year. NIST paper badges will be requested for contract employees for fingerprinting and Green badge pickup. Contact the COR to request the paper badges at least 48 hours in advance.

Site Access/Site Card/PIV Timeline (Error free badge applications)

* If contractor does not submit all badge applications at one time, the last badge application submission date will drive how long the badge process will take.

** If the applicant doesn’t complete E-QIP within the 14 days, contractor needs to notify COR to request another E-QIP invitation. Resent E-QIP invitation may take up to 4 days to be sent.

TRAVEL

Not applicable to this task order

SPECIAL MATERIAL REQUIREMENTS

None

OTHER UNIQUE REQUIREMENTS

None

PLACE OF PERFORMANCE

Gaithersburg, MD – Building 302, Central Utility Plant (CUP).

PERIOD OF PERFORMANCE

The period of performance is 750 calendar days duration from Notice to Proceed, following contract award.

Work Hours See specification sections 011000 – Summary, for work hours and other NIST-specific requirements.

[END OF SOW]