Mission_System_Hydraulic_Cleaning_(02-22-17).pdf

NOAA Ship Henry B. Bigleow Mission System Hydraulics Cleaning

February 2017

Mission System Hydraulics Cleaning and Oil Replacement

1. Work Description – Includes labor, material, and equipment to remove the existing hydraulic oil from the Mission System Hydraulics, clean the reservoir, flush the hydraulic piping and install new hydraulic oil.

2. References

(a) Standard Specification AMC-000-3C, General Requirements for Small

Contract Ship Repair

3. Government Furnished Material

3.1 None

4. Work Requirements

4.1 Reference (a) forms a part of these Detail Specifications. All provisions and requirements contained therein are applicable to all work items, including all additional work items which are authorized by the Contracting Officer.

4.2 In conjunction with Ship’s Force, follow ship’s Lockout and Tagout Procedures to secure power to the Mission System hydraulics.

4.3 Remove all hydraulic oil from the mission system hydraulic system reservoir and piping. Properly dispose of the oil.

4.4 Open and certify the mission system hydraulic reservoir safe for entry and safe for hot work.

4.5 Clean out remaining hydraulic oil in the reservoir. Remove and properly dispose of all the system pressure filters, servo filters and the return/drain filters. Provide the following Donaldson filters:

Filter Type Quantity Part Number

Pressure Filter 3 P164166 Pressure Filter 30 P164168

Servo Filter 3 P164166 Return/Drain Filter 15 P560406

4.6 Install one set of new filters in place of the removed filters.

NOAA Ship Henry B. Bigleow Mission System Hydraulics Cleaning

February 2017

4.7 Weld the leak in the tank at the tank drain. Thoroughly clean the interior and exterior of the existing weld seams on the drain prior to repairing the leak.

4.8 Install two 1 inch, schedule 40, pipe nipples with welded flanges in the aft end of the reservoir. The exact locations will be determined by the ship’s chief engineer.

Provide and install 1” bronze flanged ball valves on each pipe nipple/flange.

4.9 Install the removed manhole covers, secure all isolation valves and seal the tank vent.

Perform an air test on the tank in the presence of the local ABS surveyor and check for leaks on the new penetrations and the repaired drain. Repair all leaks, if any.

4.10 Provide and install approximately 500 gallons on new hydraulic oil into reservoir and reinstall the manhole cover. Use Chevron Rando HDZ46 hydraulic oil.

4.11 Clear mission system hydraulics Tagouts / Lockouts with Ship’s Force.

4.12 Ship’s force will operate all pumps and motors in the mission system to flush the complete system of the contaminated oil.

4.13 After the system has been flushed, remove all oil from the reservoir and piping to the extent possible. Properly dispose of the oil. Remove and properly dispose of all the system pressure filters, servo filters and the return/drain filters.

4.14 Install one set on new filters in place of the removed filters. Turn over any remaining filters to the ship’s CME. Provide and install a new gasket on the manhole covers in reinstall the covers.

4.15 Provide and install 1,500 gallons of Panolin HLP Synth 46 hydraulic oil into the reservoir.

5. Quality Assurance

5.1 In conjunction with ships for perform an operational test of all of the mission hydraulics equipment and check for proper operation and leaks. Repair all leaks, if any.

6. Notes

6.1 None

END OF SPECIFICATION