SOW Thermotron Chamber PM and Calibration.doc

N66604-XXX-XXXX

STATEMENT OF WORK

Survivability Assessment Support

1.0

BACKGROUND

The Naval Undersea Warfare Center (NUWC), Division Newport is the Navy’s principal Environment Testing facility for Virginia Class Non-Propulsion Electronic Systems. The Survivability Assessment Team, Code 7012 performs over 10 thousand hours a year of environmental qualification testing. Part of this testing utilizes Thermotron Environmental Temperature and Humidity Chambers capable of producing test environments from -73C to 175C with humidity ranges of 20% to 98%. These chambers require specialized maintenance and service by factory authorized technicians to keep them operational and preform the annual calibrations.

2.0

SCOPE

This Statement of Work describes Preventive Maintenance (PM) and Annual Calibration of Thermotron instruments in accordance with ISO/IEC 17025:2017 and ANSI/NCSL Z-540-1-1994. The Thermotron Environmental Chambers are located in Building 114CC at the Naval Undersea Warfare Center Division Newport, Rhode Island (NUWCDIVNPT). The Survivability Assessment Branch is a Service Cost Center operation, funded by various sources within NUWC, other Department of Navy sources, other DoD and non-DoD Government sources, and occasionally non-Government sources.

3.0

APPLICABLE DOCUMENTS

3.1 US Code, TITLE 42, CHAPTER 85, SUBCHAPTER VI , § 7671g National recycling and emission reduction program.

3.2 Thermotron Operations Manual for each unit list below.

3.3 Thermotron A2LA Accredited Calibration Methods Checklist 4.0

REQUIREMENTS

The factory authorized contractor shall perform annual preventive maintenance in accordance with Thermotron procedures as list in section 4.2 and annual calibrations in accordance with Thermotron procedures and listed in 4.3 4.1 Environmental Chambers

4.2 Perventive maintenance

Preventive Maintenance will be performed annually on each environmental chamber starting on the fiscal year listed in the table in section 4.1. The PM includes a report that identifies the chamber model #, serial # as well as the service report #. The PM includes:

Electrical Inspection

Check line voltage and record it

Check all connections

Check Contactors

Measure heater current and record it

Measure compressor current and record it

Measure steam generator current and record it

Check air circulation rotation

Measure circulator motor current and record it

Check any timers

Instrumentation

Calibrate Controller

Calibrate ThermAlarm

Calibrate humidity sensor

Calibrate any additional temperature sensors

Humidity System

Clean humidity generator

Check float adjustment

Flush water lines and screens

Check vapor generator heater resistance

Clean atomizer nozzle (if applicable)

4.2 Perventive maintenance (cont.)

Refrigeration Inspection

Check compressor Standby Pressure

Check compressor Charge

Check Oil levels

Check Oil pressures

Check Hi-Low pressures

Check discharge temperatures

Perform Oil Acid test if needed

Leak check system

Check Frostback

Adjust water valve if needed

Record hours run for temperature, PTC and humidity

Operational Tests

Verify chamber operation at low temperature

Verify chamber operation at high temperature

Verify chamber operation with humidity

Summarize findings

Recommend service, upgrades and summarize findings submitted to Survivability Branch Head or designee. (CDRL A0001) 4.3 Annual Calibration

Each environmental chamber shall be calibrated starting in the fiscal year listed in the table in section 4.1. The annual calibration will use A2LA Accredited Method C2.1 Instrument Input Calibration for temperature and other analog inputs and Method C3.2 Humidity Sensor Calibration using humidity salts. A signed calibration decal with date of the calibration and next due date for calibration shall be secured to chamber in plain view of the operator. A certificate of calibration shall be submitted to the Survivability Branch Head of designee for each chamber. (CDRL A0002) 4.4 Additional information

The contractor will need to maintain a Visit Request on file and Defense Biometric Identification Data System to obtain unescorted access to the facility. The contractor shall provide all the necessary tools and materials required to perform all work. The contractor shall be responsible for removal of any chemical waste that resulted from this contract. Prior to performing any “hotwork” (i.e. brazing, welding, or soldering), the Branch Head or designee must be notified so that arrangements can be made with the facilities department to issue a burn permit and turn off the building smoke detectors. Hot Work permits are issued by the Newport Naval Station Fire Department and may require up to 24 hours’ notice to secure the fire alarm system in B-114.

4.4 Additional information (Cont.)

All crane, forklift and rigging will be performed by certified NUWC employees. The contractor is not authorized to use the material handling equipment in B-114.

Contractor is prohibited from bring computers with active 802.11 wireless devices, or computers with web camera installed on to NUWCDIVNPT at any time. No cell phones with cameras or recording capability are permitted in any NUWCDIVNPT facility.

5.0 PROGRESS REPORTS

None 6.0 Government Furnished Information (GFI)

The Government will provide the contractor the following documents/information as GFI while on site:

6.1 Thermotron Operations/System Manual for each Environmental Chamber,