Cleaning_Galley_Ventilation_SOW_3_10_15_ON_756.pdf

STATEMENT OF WORK

CRYOGENICALLY CLEAN EXHAUST SYSTEM 8 GALLEY VENTILATION

1. Applicable portion of the following NAVSEA Specification is provided as Enclosure 1:

ENCLOSURE (1) Excerpt of NAVSEA TM S9086-RQ-STM-010/CH-510R7 – Naval

Ships’ Technical Manual (NSTM) Chapter 510 – Heating, Ventilation & Air

Conditioning Systems

2. Scope:

The vendor is task to cryogenically clean, using a Navy approved cryogenic method, galley ventilation ducting of exhaust system 8 from galley & dryer to precipitator onboard

USS SCRANTON (SSN-756) in accordance with Enclosure 1.

3.

Vendor Responsibilities

Vendor will provide all labor & material except Shipyard support services such as electrical power, service air & potable water.

Vendor shall request any specific support services as required.

Vendor will clean to the maximum extent practical to ensure ventilation ducting is free of all loose particles, grease, oil and foreign material. Example of cleaned ventilation ducting shown in Enclosure 1.

Vendor will dispose of waste generated by cleaning.

Vendor will obtain proper security clearances as required to work shipboard in the forward compartment, including AFT of Frame 50. Vendor will not work AFT of Frame 62 (Engineering Spaces).

Vendor will adhere to PNSY safety requirements, including but not limited to safety shoes, eye protection with side shields, hearing protection, gloves, and hardhats.

Vendor will ensure work site cleanliness is maintained in the highest reasonable state including the collection of trash, industrial waste, mechanical/grinding particles, etc., at least once every shift.

Vendor will provide air monitoring for atmospheric conditions in the vendor work areas during cleaning.

Vendor shall provide the Shipyard with the total amount of CO2 discharged to the atmosphere for EPA reporting.

Vendor will specify the size and type of electrical and mechanical connectors interfacing with the Shipyard services as early in the planning process as possible.

The vendor shall identify any video/photograph equipment that may be required and shall ensure all shipyard photograph security requirements are met prior to arrival at the Shipyard.

Vendor Representatives and Shipyard Representatives shall jointly meet and ship-check during the planning phase/prior to cleaning to coordinate the details of the cleaning effort such as defining support services, entry and exit points, isolating/blanking branch lines, Safety precautions, HAZMAT handling and establishing a detail schedule.

For planning purposes the vendor shall plan to participate in approx. 3 telephone 1 hour conferences to coordinate the planning efforts and interface prior to commencing the on-site cleaning.

4.

Portsmouth Naval Shipyard Responsibilities

Shipyard will monitor shipboard atmospheric conditions in compartments adjacent to, above and below the work areas during cleaning.

Shipyard will provide minor support services such as electrical power, service air & shipyard potable water as required.

Shipyard will provide services to remove interferences to assist cleaning.

Shipyard will provide overall control of the cleaning evolution through TWD, Work control and on-site Supervision.

Shipyard will ensure all Shipyard Category I Hazardous Evolution requirements are met.

5.

Period of Performance

All work to be accomplished in approximately 4 days as soon as possible.

Cryogenic cleaning of Shipboard systems is a Shipyard Category I Hazardous Evolution.

The vendor shall complying with the following requirements to support the Shipyard in meeting the Cat I Hazardous Evolution requirements:

a) All shipboard cryogenic vent cleaning operations shall be under Shipyard Technical

Work Document (TWDs), Work Control and Test/Flush supervision/direction.

b) Provide a schematic of the cleaning fixture showing all valves, fittings, components and tubing. Include the design pressure rating and proof that the fixture has been properly pressure tested. Include safety equipment to ensure ship's system is not over pressurized during the cleaning evolution. All meters and gages shall have proof of current calibration.

c) Provide Operating Instructions including any positioning of ship's equipment, safety controls for the cleaning process, identify all materials used and provide MSDA safety sheets. Assist the Shipyard with developing contingent safety response procedures. Shipyard Engineering and OSHE Dept shall review and concur with the procedures and incorporate them into Shipyard TWDs.

d) Prior to operations, the temporary cleaning system shall be tested to at least 110% of the relief setting and tightness tested up to the entry point of the Ship's System.

e) Participate in Pre-evolution and Pre-Shift briefings.

Enclosure 1

NAVY VENTILATION CLEANLINESS ASSESSMENT GUIDE

SECTION I

CLEANING REQUIREMENTS GUIDE

510-B.3 How to Use This Guide

This guide provides written information about types of HVAC ductwork and components, as well as photographs at various stages of dirt and debris buildup. During inspection, the ship’s ducts and components should be compared to the photographs in this guide. When close comparisons to the photographs are found, the following information should be used to determine if cleaning is required.

When cleaning is required, the cleaning shall return the ductwork and components to the “clean” condition.

Clean: Cleaning is not required at this time.

Light Buildup: Cleaning is not required at this time, Moderate Buildup: This system will need cleaning. It is time to commence planning for cleaning.

Laundry system ductwork with moderate buildup should be cleaned at this time due to the flammability of the debris in the ducts. Cleaning shall return the ductwork and components to the “clean” condition.

Heavy Buildup: This should be cleaned as soon as possible. Cleaning shall return the ductwork and components to the “clean” condition.

510-B.5 Galley Exhaust Ductwork

Galley exhaust ducts tend to rapidly collect grease buildup. This buildup is a fire hazard, and the system should be inspected often.

The following photographs depict various levels of debris buildup within the galley exhaust system ductwork.