Amend_0003_Section_01_11_00.00_26.pdf

Dworshak & McNary Lubrication Oil System Flushing W912EF-17-R-0018 Amend-0003

SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

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SUMMARY OF WORK

PART 1 GENERAL

1.1 GENERAL

1.2 WORK COVERED BY CONTRACT DOCUMENTS

1.2.1 Project Description

1.3 LOCATION

1.4 OCCUPANCY OF PREMISES

PART 2 PRODUCTS

PART 3 EXECUTION

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SUMMARY OF WORK

PART 1 GENERAL

1.1 GENERAL

This specification outlines the scope of work for the Dworshak and McNary Lubrication Oil System Flushing job, which includes flushing and tank cleaning services for two (2) powerhouses within the Walla Walla District.

Powerhouse-specific information below is given for estimating purposes only, not for design/submittal purposes. Hydropower units will be isolated by closed valves from the piping loops being flushed; units will continue to operate during flushing. Contractor must field-verify all information necessary to successfully perform the work.

1.2 WORK COVERED BY CONTRACT DOCUMENTS

Note that throughout these plans and specifications, "provide" in reference to an item means "furnish and install".

1.2.1 Project Description

The work includes but is not limited to manpower, equipment, and expertise to provide services listed below and incidental related work.

Dworshak Powerhouse:

1. Work will include flushing the main lubrication oil supply and drain headers and the branches to/from each unit's governor sump.

a. Supply and drain headers are 2" copper pipe, 200 feet long with a crossover between headers at the unit furthest from the oil storage room.

b. Dworshak has 3 main hydropower units with oil supply and drain branches at each unit. Supply branches are 1" diameter for units 1 and 2, and 2" diameter for unit 3. Drain branches are 2" diameter at all units. Distance between main header and most likely valve location for temporary jumpers is approximately 40 feet.

c. Oil transfer piping from the oil fill/discharge cabinet in the erection bay to the oil storage tanks, and between the oil storage tanks and the purification equipment.

2. Work will include cleaning the tanks listed below. Up to three separate visits to Dworshak may be required to clean these tanks due to work by others; coordinate the schedule with the CO.

a. 12,000-gallon Clean Transformer Oil (CTO) tank.

b. 6,500-gallon Clean Lubrication Oil (CLO) tank.

c. 6,500-gallon Dirty Lubrication Oil (DLO) tank.

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McNary Powerhouse:

1. Work will include flushing the main lubrication oil supply and drain headers and the branches to/from each unit's governor sump.

a. Supply header is 2.5" copper pipe. Drain header is 3" cast iron pipe. Headers have 90-degree elbows at each unit. Headers are approximately 1300 feet long and do not have a crossover between the supply and drain headers.

b. 14 main hydropower units with oil supply and drain branches between each pair of units. Supply branches are 2" diameter.

Drain branches are 3" diameter. Distance between main header and most likely valve location for temporary jumpers is approximately 40 feet.

2. Work will include cleaning the tanks listed below. Up to three separate visits to McNary may be required to clean these tanks due to work by others; coordinate the schedule with the CO.

a. 15,000-gallon New Transformer Oil (NTO) tank #2.

b. 15,000-gallon CTO tank #3.

c. 15,000-gallon DTO tank #1.

d. 10,000-gallon CLO tank #5.

e. 10,000-gallon New Lubrication Oil (NLO) tank #64.

f. 2,000-gallon Gravity Feed Lubricating Oil tank.

1.3 LOCATION

The work is located at two Walla Walla District Powerhouses: Dworshak and McNary. See reference drawings for relevant site details and dimensions.

1.4 OCCUPANCY OF PREMISES

Building(s) will be occupied during performance of work under this Contract.

Before work is started, arrange with the Contracting Officer a sequence of procedures, means of access, space for storage of materials and equipment, and use of approaches, corridors, and stairways.

PART 2 PRODUCTS

Not used.

PART 3 EXECUTION

Not used.

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3.7 SPILL PREVENTION PLAN FOR OIL FLUSHING