36C26120R0017-0004003.docx

Project No: Bldg. 347 HVAC Upgrade 03/13/2020 Corrected Copy Scope of Work

1.0 General Intent

1.1 The contractor must provide all personnel, equipment, tools, materials, supervision, and other items and services necessary to perform the repair of Bldg. 347 HVAC systems located at Bldg. 347 for the Veterans Affairs Palo Alto Health Care System (VAPAHCS), 795 Willow Road; Menlo Park, CA 94025.

1.2 The contractor must perform to the standards in this contract. This project shall take no longer than 180 calendar days from the notice to proceed to complete.

1.3 This project shall be coordinated with the appointed COR to insure minimal impact to resident’s day to day activities and minimal noise. Scheduling of work shall be at the convenience of the VAPAHCS.

2.0 General Information and Requirements

2.1 The objective of this project is to repair of Bldg. 347 HVAC systems.

2.2 The contractor shall provide operation and maintenance instructions, and manufacturer documentation at the completion of the project. Manufacturer documentation and maintenance schedule to be provided in close out documents.

2.3 The contractor shall provide a five-year full parts and labor warranty on the newly installed roofing material in addition to the manufacturer’s warranty.

2.4 The contractor shall provide all tools, equipment, and personal protective equipment necessary to complete this project as deemed by industry standards, this SOW, all related specifications, applicable code requirements, and site policy.

2.5 The contractor shall provide daily cleanup and securing of work site, including securing tools and equipment. Disposal of all waste and debris is at the contractor’s own expense.

2.6 The contractor shall provide quality control of all work conducted and the individual appointed shall be competent and educated/experienced in the field of work this scope encompasses.

2.7 All work shall be coordinated with the COR assigned to this project and only commence once approved.

2.8 Badges: Contractor will obtain required ID badges for all employees used on project at start of each workday; Report the COR for escort to the station police service for sign in and badge issuance.

2.9 Security: The contractor and their personnel shall be subject to the same Federal laws, regulations, standards, and VA policies as VA personnel regarding information and information system security.

2.10 Schedule: Normal work hours will be 8:00am – 4:30 pm Monday-Friday excluding Government holidays unless otherwise approved by the COR. It is the intent of the Palo Alto VA Medical Center that the work is to be completed within 180 calendar days from the issuance of the Notice to Proceed (NTP). Any request to utility shutdowns must be requested in writing at a minimum of 21 days prior to the requested day of shutdown.

2.11 Codes and Standards: The Contractor shall follow all applicable codes and standards to this type of work including but not limited to Health Care System Memorandums (HCSM), OSHA Guidelines, Lock-out-Tag-out, Rules of Station, NFPA, and etcetera. In the event that any code/standard is found to be contradictory; the authority having jurisdiction (COR) shall make the final determination and work shall proceed at no additional cost to the Government.

3.0 Specific Tasks

3.1 The contractor shall provide all supervision, administrative and technical support, labor, subcontractors, tools, transportation, materials, supplies and equipment. The contractor shall plan, schedule, and ensure effective completion of the repair of Bldg. 347 HVAC systems.

3.2 The contractor shall coordinate work with onsite personnel

3.3 The contractor shall lock out and tag out power to units in accordance to VA Lock out/Tag out requirements.

3.4 The contractor shall recover refrigerant from units and store onsite, weigh and notify customer of findings

3.5 The contractor shall perform the following Demolition of current AHUB#1, AHUB#2, AHUA#1 and AHUA#2 and units.

includes all necessary piping as specified in the spec. Piping materials, construction methods, and installation details will be per normal shop fabrication and field installation standards. Seismic restraints to conform to UBC standard details. All heating hot water rated piping will typically be installed using EITHER copper type “L”, with brazed joints & fittings, OR Schedule 40 black carbon steel with threaded or welded joints and fittings. All refrigerant piping will typically be installed using copper ACR with brazed joints & fittings. All condensate piping with typically be installed using copper “Type L” with brazed joints and fittings. Seismic restraints to conform to UBC standard details. will insulate piping per industry standards, California Title 24, and local code requirements.

3.6 The contractor shall perform the following work on AHU-A#1, provide new 30-ton condensing unit 2 stage system to replace existing condensing unit.

1. Lock out and tag out machine.

2. Recover refrigerant and oil and dispose.

3. Remove existing 30-ton condenser and have properly disposed

4. Remove existing 30-ton coil from associated unit.

5. Demo old refrigerant piping and properly dispose

6. Provide and Install new 30-ton 2 stage condensing unit.

7. Connect electrical to existing disconnect

8. Use of Crane and Rigging of equipment. (see separate letter for pricing)

9. Provide and install new refrigerant piping, fittings and hardware as needed.

10. Provide and install new TXV valves.

11. Provide and install new solenoid valves.

12. Provide and install new liquid filter dryers.

13. Provide and install new pipe supports and mounts.

14. Provide new suction line insulation.

15. Pull system into vacuum, verify holding pressures

16. Provide and install new R-410 refrigerant up to 70 lbs., additional to be billed extra if needed.

17. Perform proper start up procedures and check system operation.

18. Log machines parameters.

3.6 The contractor shall perform the following work on AHU-A#2, provide new 30-ton condensing unit 2 stage system to replace existing condensing unit.

19. Lock out and tag out machine.

20. Recover refrigerant and oil and dispose.

21. Remove existing 30-ton condenser and have properly disposed

22. Remove existing 30-ton coil from associated unit.

23. Demo old refrigerant piping and properly dispose

24. Provide and Install new 30-ton 2 stage condensing unit.

25. Connect electrical to existing disconnect

26. Use of Crane and Rigging of equipment. (see separate letter for pricing)

27. Provide and install new refrigerant piping, fittings and hardware as needed.

28. Provide and install new TXV valves.

29. Provide and install new solenoid valves.

30. Provide and install new liquid filter dryers.

31. Provide and install new pipe supports and mounts.

32. Provide new suction line insulation.

33. Pull system into vacuum, verify holding pressures

34. Provide and install new R-410 refrigerant up to 70 lbs., additional to be billed extra if needed.

35. Perform proper start up procedures and check system operation.

36. Log machines parameters.

3.7 The contractor shall perform the following work on AHU-B#1, provide new 40-ton condensing unit 2 stage system to replace existing condensing unit.

37. Lock out and tag out machine.

38. Recover refrigerant and oil and dispose.

39. Remove existing 40-ton condenser and have properly disposed

40. Remove existing 40-ton coil from associated unit.

41. Demo old refrigerant piping and properly dispose

42. Provide and Install new 40-ton 2 stage condensing unit.

43. Connect electrical to existing disconnect

44. Use of Crane and Rigging of equipment. (see separate letter for pricing)

45. Provide and install new refrigerant piping, fittings and hardware as needed.

46. Provide and install new TXV valves.

47. Provide and install new solenoid valves.

48. Provide and install new liquid filter dryers.

49. Provide and install new pipe supports and mounts.

50. Provide new suction line insulation.

51. Pull system into vacuum, verify holding pressures

52. Provide and install new R-410 refrigerant up to 70 lbs., additional to be billed extra if needed.

53. Perform proper start up procedures and check system operation.

54. Log machines parameters.

3.8 The contractor shall perform the following work on AHU-B#2, provide new 40-ton condensing unit 2 stage system to replace existing condensing unit.

55. Lock out and tag out machine.

56. Recover refrigerant and oil and dispose.

57. Remove existing 40-ton condenser and have properly disposed

58. Remove existing 40-ton coil from associated unit.

59. Demo old refrigerant piping and properly dispose

60. Provide and Install new 40-ton 2 stage condensing unit.

61. Connect electrical to existing disconnect

62. Use of Crane and Rigging of equipment. (see separate letter for pricing)

63. Provide and install new refrigerant piping, fittings and hardware as needed.

64. Provide and install new TXV valves.

65. Provide and install new solenoid valves.

66. Provide and install new liquid filter dryers.

67. Provide and install new pipe supports and mounts.

68. Provide new suction line insulation.

69. Pull system into vacuum, verify holding pressures

70. Provide and install new R-410 refrigerant up to 70 lbs., additional to be billed extra if needed.

71. Perform proper start up procedures and check system operation.

72. Log machines parameters.

3.9 The contractor shall provide the following Four (4) new evaporator coils for existing AHU units,

1. Lock out and tag out machine.

2. Remove existing Evaporator coils from associated unit.

3. Provide and Install new Evaporator coils units.

4. Connect electrical to existing disconnect

4.0 The contractor shall provide the following Two (2) new HHW coils for existing condensing units,

5. Lock out and tag out machine.

6. Remove existing HHW coils from associated unit.

7. Provide and Install new HHW coils from associated units.

8. Connect electrical to existing disconnect

4.1 The contractor shall provide the following Four (4) new supply fan motors for existing AHU’s,

9. Lock out and tag out machine.

10. Remove existing supply fan motors from associated unit.

11. Provide and Install new supply fan motors units.

12. Connect electrical to existing disconnect

4.2 The contractor shall perform the following Four (4) new return fan motors for existing AHU’s,

13. Lock out and tag out machine.

14. Remove existing return fan motors from associated unit.

15. Provide and Install new return fan motors units.

16. Connect electrical to existing disconnect

4.5 The contractor shall Meet with structural engineer & review building structure to ensure the roof can support new condensing units.

4.6 The contractor shall submit crane pick plan for removal and installation for each condensing unit.

5.0Technical Exhibits

5.1 – Specifications (see attached, listed below)

Section 01 00 00, General Requirements Section 01 32 16, Project Schedules Section 01 33 23, Shop Drawings, Product Data, and Samples Section 01 35 26, Safety Requirements Section 02 41 00, Demolition Section 13 05 41, Seismic Restraint Requirements for Non-Structural Components Section 23 05 11, Common Work Results for HVAC Section 23 05 41, Noise and Vibration Control for HVAC Piping and Equipment Section 23 05 93, Testing, Adjusting, and Balancing for HVAC Section 23 07 11, HVAC and Boiler Plant Insulation Section 23 08 00, Commissioning of HVAC Systems Section 23 81 00, Decentralized Unitary HVAC Equipment

5.2 Scope Inclusions:

Phase the upgrades, completing one wing at a time. Wing A and B upgrades will be completed sequentially.

The following scope of work is included for each wing:

· Mechanical, electrical and plumbing (MEP) safe-off of existing condensing unit

· Fire and Life Safety (FLS) safe-off to be completed by client.

· Temporary cooling to be included by Contractor to support comfort cooling.

· Recover and recycle existing R-22 refrigerant

· Design and fabricate new engineered base for condensing units

· Rig-in and set new AHU units in place of existing

· include a seismically rated steel frame base to secure new units onto existing pad

· includes all necessary seismic / anchorage calculations and details

· New steel vibration isolators are to be included

· Install new ACR refrigerant piping serving new AHU & condensing unit system.

· to provide new pipe supports as necessary.

· Furnish and install new, custom DX evaporator coils for existing AHU units

· Replace fan motors in AHU as necessary

· Replace bearings, belts and sheaves as necessary in units

· Laser align all belts and sheaves

· Startup, test, and monitor unit performance

· Insulate new suction & liquid pipe

· includes new insulation per 2019 code standards, which are to be placed into effect starting Jan. 1st, 2020.

· Perform startup and functional testing of newly installed equipment

ALSO TO INCLUDE:

· Detailing and coordination with other trades

· 1-hour weekly meetings for duration of related scope

· Completion of Title-24 paper work during commissioning

· Air balance and startup reports by the Contractor

· Perform cleanup and punch list

· Provide close out documents including equipment IOM’s and As-built drawings

· Provide equipment and piping labels

· Training as appropriate for the project

WARRANTY:

Equipment manufacturer’s standard warranty on equipment purchased by Contractor and warranty all Contractors labor for a period of one (1) year from date of start-up for beneficial use.