TABLE OF CONTENTS


Overview of the Collection

History

Scope and Content

Arrangement

Restrictions

Index Terms

Related Material

Administrative Information

Detailed Description

Series I: Blueprints and other documents, 1912-1966

Series II: Historical information, 1891-1982

Series III: Boiler office records, undated, 1915-1986

Series IV: Boiler Office files, undated, 1921-1985

Series V: Boiler Office log sheets and repair records, 1926-1986

Series VI: Power plant architectural plans (rolled plans), undated





Cos Cob Power Plant Records



Finding aid prepared by Kristie McGarry and Leigh Smead



This finding aid was prepared with generous support from the Eldon and Judith Bernstein Endowment.



Archives & Special Collections at the Thomas J. Dodd Research Center

405 Babbidge Road, Unit 1205

Storrs, Connecticut 06269-1205

URL: http://doddcenter.uconn.edu/

© 2005 University of Connecticut



Overview of the Collection
Repository: Archives & Special Collections at the Thomas J. Dodd Center.
Creator: Cos Cob Power Plant (Conn.).
Title: Cos Cob Power Plant Records.
Dates: undated, 1891-1986.
Quantity: 18 linear feet.
Identification: MSS19880024
Language: English.
Abstract: The Cos Cob Power Plant, an electrical power plant located in Greenwich, Connecticut, was part of a pioneering venture in mainline railroad electrification. With the Westinghouse Electric and Manufacturing Company, the New York, New Haven & Hartford Railroad designed an efficient system using alternating-current (ac) electrification that facilitated railroad traffic into urban areas after the New York legislature passed laws prohibiting the use of steam locomotives in New York City south of the Harlem River. Construction of the Cos Cob Power Plant was completed in 1907 and served as the generating station for power to the trains. The collection consists of blueprints and wiring diagrams for the electrical systems of the Woodlawn, New York, to New Haven, Connecticut, line, with architectural drawings, foremen's log books, records of coal received, and administrative correspondence.

History

The Cos Cob Power Plant was conceived in 1903 as a result of the New York State legislature’s law that prohibited all steam locomotives from entering New York City after 1908 due to train wrecks in the Park Avenue Tunnel caused by low visibility from locomotive smoke and steam. The New York Central Railroad, which operated all railroad traffic between Woodlawn, New York, into New York City, decided to install a low-voltage direct current third-rail electrical system; thus after 1908 all locomotives coming into New York City's Grand Central Terminal (then under construction), would be forced to operate off third- rail.

Although the New York, New Haven & Hartford Railroad, better known as the New Haven Railroad, operated considerable low- voltage direct current trackage at this time, this system was considered inadequate for the operation of heavy trains over long distances at high speeds. The New Haven Railroad’s engineers, working with Westinghouse Electric and Manufacturing Company of Pennsylvania, decided to install high-voltage 11,000 volt overhead wires on the tracks from Woodlawn, New York, into Connecticut. These wires would be powered from the railroad's own power station, using single-phase alternating current (ac) electricity. This was done at a time when low-voltage direct current electrification was the rail standard of the day.

Construction of the power plant began in 1905 in Cos Cob, Connecticut, located in the town of Greenwich on the Mianus River. On 24 July 1907, the first New Haven Railroad electrified passenger train traveled from Grand Central Terminal to New Rochelle, New York. The initial electrification covered all four tracks to Stamford, Connecticut, and in 1913-1914 was extended to New Haven, Connecticut.

The New York Central Railroad's third-rail system from Woodlawn, New York, into Grand Central Terminal required the New Haven Railroad's locomotives to operate both off this system and on their own high-voltage overhead wire. This meant that these locomotives and multiple unit cars had to change over between these two systems while moving at track speed. With so much traffic it was considered unworkable to stop every train for the changeover.

The initial overhead catenary construction from Woodlawn to Stamford utilized two parallel messenger wires supporting a single trolley wire by vertical hangers, resulting in a triangular construction. The rigidity of this arrangement was found to be undesireable, so the 1913-1914 electrification extension to New Haven utilized a single messenger wire, as did other extensions. The system reached 673 track miles at its maximum.

The Cos Cob Power Plant was the first power plant built exclusively for a railroad and is considered an engineering achievement for its use of high-voltage alternating current (ac) for railroad electrification. The plant served the New Haven Railroad until the railroad's demise in 1969, and then served Penn Central, Conrail and Metro-North until it was closed in 1986. The Cos Cob Power Plant received landmark status from the American Society of Mechanical Engineers/Institute of Electrical and Electronics Engineers in 1982.

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Scope and Content

The records consist of blueprints and wiring diagrams for the electrical systems of the electrified railroad zone of Woodlawn, New York, to Cedar Hill in New Haven, Connecticut, that provided power to the New York, New Haven & Hartford Railroad, generated by the Cos Cob Power Plant. The records also include architectural drawings, foremen's log books, records of coal received, and administrative correspondence concerning the power plant and the Mianus River Dam.

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Arrangement

Series I: Blueprints and other documents (1912-1966) of anchor bridges and electrification along the New Haven Railroad shoreline route from New York City to Cedar Hill in New Haven, Connecticut, . Materials in this series are organized by anchor bridges (or electric girders which support the catenary wire that transmits the electricity) situated along the electrified railroad zone.

Series II: Historical information about electrification along the New Haven Railroad (1891-1982) provides information about the equipment and structures serviced and the processes that were made possible through the Cos Cob Power Plant, mostly in its first several years of function.

Series III: Boiler office records concerning machinery (undated, 1915-1986) give detailed information about the servicing of equipment through the boiler office of the plant.

Series IV: Boiler office files (undated, 1921-1985) consist of manuals, catalogs, and instructions for boilers and circuit breakers, as well as correspondence, inventories, blueprints, and other documents with information about environmental pollution and emissions monitoring, labor unions for the railroad personnel, and specifications for switchboards, cable, and transformers. Also includes photographs of exterior and interior scenes of the plant and its equipment, as well as the Mianus pumping station and company executives. Alphabetically by topic.

Series V: Boiler office log sheets and repair records (1926-1986) show regular service and repair notes for the boiler room, coal received, the operations foreman, and electric meter field tests.

Series VI: Power plant architectural plans (rolled plans) (undated) show maps of the power plant property and plans and details of the power plant facilities and the Mianus River Dam.

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Restrictions

Restrictions on Access

There are no access restrictions on this collection.

Restrictions on Use

Permission to publish from these Papers must be obtained in writing from both the University of Connecticut Libraries and the owner(s) of the copyright.

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Related Material

Archives & Special Collections has a substantial collection of records pertaining to New England railroads. For detailed information on these collections please contact the curator or ask at the reference desk.

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Index Terms

This record series is indexed under the following controlled access subject terms.

Subjects:

Connecticut--Business, industries, and trades--Electric industry.
Cos Cob (Conn.)
Cos Cob (Conn.)--Business, industries, and trades--Electric industry.
Cos Cob Power Plant (Conn.)
Electric circuits-–Alternating currents.
Electric railroads-–Connecticut-–Substations.
Electrical power plants–-Connecticut-–Cos Cob.
Mianus River Dam (Conn.)
Railroads--Electrification.
Railroads-–Power supply-–Connecticut.

Organizations:

New York, New Haven & Hartford Railroad Company.
Penn Central Transportation Company.
Westinghouse Electric Corporation.

Document Types:

Administrative Records.
Blueprints.
Books.
Correspondence.
Financial Records.
Fliers. [printed matter]
Inventories.
Manuscripts.
Notebooks.
Notes.
Photocopies.
Photographs.
Press releases.
Publications.
Scrap-Books.

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Administrative Information

Custodial History

The records were stored in the power plant facility in Cos Cob, Connecticut, prior to the donation to the University of Connecticut.

Preferred Citation

[Item description, #:#], Cos Cob [Connecticut] Power Plant Records. Archives & Special Collections at the Thomas J. Dodd Research Center, University of Connecticut Libraries.

Acquisition Information

The Cos Cob Power Plant Records were transferred from the Connecticut Department of Transportation to the University of Connecticut Libraries in August 1988 and March 1991.

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Detailed Description

Series I: Blueprints and other documents, 1912-1966
1:1 Harlem River Branch - General: electrification information, blueprints, wire locations, instructions, costs, 1948
1:2 Bowery Bay Substation: proposals, operating instructions, blueprints, 1942-1949
1:3 Bowery Bay Substation - Plans: electrification information, diagrams, blueprints, 1946-1956
1:4 Oak Point, NY: blueprints, 1929
1:5 Oak Point Yard, NY: diagrams, blueprints, 1912-1948
1:6 Oak Point, NY: diagrams, blueprints, diagrams, operating instructions, 1941-1948
1:7 Oak Point, NY: blueprints, 1947-1949
1:8 West Farms, NY - General: testing procedures, diagrams, blueprints, proposals, correspondence, instructions, printed material, 1943-1957
1:9 West Farms, NY Substation: drawing index, equipment, material specs, 1937-1952
1:10 West Farms, NY Substation: testing records and procedures, relay test manuals, diagrams, blueprints, 1949-1953
1:11 West Farms, NY: blueprints, diagrams, 1916-1951
1:12 West Farms, NY: blueprints, diagrams, 1946-1957
2:13 West Farms, NY: purchasers order, diagrams, blueprints, 1914-1957
2:14 Pelham Bay, NY: operating instructions, blueprints, diagrams, 1945-1966
2:15 Pelham Bay Draw Bridge, NY diagrams, blueprints, drawings, instructions, 1937-1941
2:16 New Rochelle Junction, NY: operation instructions, drawings, corresondence, diagrams, blueprints, 1936-1956
2:17 New Rochelle Junction, NY: diagrams, blueprints, 1928-1978
2:18 South Mount Vernon, NY: charts, correspondence, drawings, instructions, blueprints, diagrams, 1941-1948
2:19 New Rochelle, NY: purchasers orders, blueprints, operation instructions, diagrams, 1945-1966
3:20 New Rochelle, NY: purchasers orders, blueprints, 1946-1957
3:21 Rye, NY: blueprints, diagrams, 1941-1943
3:22 Port Chester, NY: blueprints 1945
3:23 East Port Chester, NY: blueprints, diagrams, notes, 1940-1943
3:24 Greenwich, CT: diagrams, blueprints, notes, 1940-1942
3:25 Cos Cob, CT: blueprints, diagrams, correspondence, 1942-1949
3:26 Riverside (Greenwich), CT: notes, blueprints, 1945
3:27 Stamford, CT: notes, diagrams, blueprints, 1942
3:28 New Canaan, CT Branch - General: reports, 1954
3:29 Darien, CT: diagrams, blueprints, operating instructions, correspondence, notes, 1939-1966
3:30 Darien, CT: correspondence, material transfer/issue tickets, notes, daily work reports and time records 1967
3:31 South Norwalk, CT: test records, diagrams, blueprints, notes, 1925-1945
3:32 South Norwalk (Drawbridge), CT: electrification blueprints, notes 1945
3:33 Danbury, CT Branch - General: diagrams, blueprints, purchaser orders, correspondence, Westinghouse Electric Corporation memos, 1926-1955
3:34 Greens Farms, CT: Westinghouse proposals and specifications, purchasers orders, operating instructions, diagrams, blueprints, 1915-1950
3:35 Burr Road: blueprints, 1950
3:36 Bridgeport, CT: blueprints, diagrams, 1947
3:37 Devon, CT: blueprints, diagrams, material list, notes, instructions, purchasers orders, 1928-1955
4:38 Woodmont, CT (signals): correspondence, blueprints, 1953-1954
4:39 Woodmont, CT (capacitors): correspondence, instructions, Westinghouse publications, specifications, drawings, purchase orders, test reports, diagrams, 1945-1948
4:40 Woodmont, CT (capacitors): reports, proposals, correspondence, diagrams, 1949-1964
4:41 Woodmont, CT: diagrams, blueprints, drawing index, 1945-1950
4:42 Woodmont, CT: blueprints, drawings index, 1949-1954
4:43 Woodmont, CT: purchasers orders, drawings, blueprints, 1942-1948
4:44 New Haven, CT: electrification blueprints 1921
4:45 Cedar Street, New Haven, CT: diagrams, blueprints, purchasers orders, drawings index, 1945-1957
4:46 Cedar Street, New Haven, CT: notes, drawings, operating instructions, proposals, diagrams, blueprints, 1945-1946
5:47 Fair Street, New Haven, CT: notes, operating instructions, memos, drawings, requisitions, correspondence, proposals, diagrams, blueprints, 1918-1955
5:48 Fair Street, New Haven, CT: purchasers orders, notes, diagrams, blueprints, 1940-1960
5:49 Mill River Junction, New Haven, CT: blueprints, 1915-1949
5:50 Cedar Hill, New Haven, CT: sectionalizing maps, correspondence, proposals, electrification diagrams, blueprints, 1934-1957
5:51 Cedar Hill, New Haven, CT: purchasers orders, blueprints, 1953-1956
Series II: Historical information, 1891-1982
5:52 Cos Cob (Dispatcher): memos, operating instructions, Westinghouse publications, diagrams, blueprints, 1938-1943
5:53 Cos Cob (Dispatcher): blueprints, 1940-1951
5:54 Cos Cob (Dispatcher): drawings index, wiring diagrams, blueprints, 1939-1957
5:55 Cos Cob (Dispatcher): diagrams, blueprints, 1939-1953
6:56 “New Haven Electrification”: article by Sy Reich, 1975
6:57 Historical: map, electrification blueprints, proposal, 1891-1943
6:58 Structural: blueprints, 1922-1924
6:59 Power System (11-25kv): electrification blueprints, wiring diagrams, 1914-1947
11KV/22KV. 3-Wire System Showing Power Connections, 1946
Hell Gate - West Farms Connections, 1938
West Farms to Bay Ridge 11-KV Power System Operating Diagram (390EE-73-1), 1944, revised 1947
General Distribution Diagram for All Lines West of Cos Cob, 1914
Main Wiring Diagram - Cos Cob Power Station (3845), 1921
6:60 Power Plant Equipment - Electrical Plans: blueprints, diagrams, 1921-1954
Main Structure Diagram (6S-1001), 1928
“MC” Temper. & “CO” Relay Brd. Wiring Diagram, rear view (6S-1005), 1928
Recording Meter Board Wiring Diagram, rear view (6S-1006), 1928
Bench Board Writing Diagram, rear view (6S-1007), 1928
Instrument Board Wiring Diagram, rear view (6S-1008), 1928
60∼ Signal Board Wiring Diagram, rear view (6S-1009), 1928
Diff. Proj. & Battery Floating SW Board Wiring Diagram (6D-1010), 1928
Load Totalizing (389-109), 1945
Operating Wiring Diagram (550E-6), 1945
Station Recording Meter Panel, rear view (550E-7), 1945
440V Switchgear Control Conduits (550-E-36), 1945
440 Volt Power Conduits at Switchgear (550-E-37), 1945
22 KV. Electrical Assembly Sections (550-E-63), 1945
22 K.V. O.C.B. Disconnecting Switch Grounding Details (550-E-66), 1945
Proposed Wiring Diagram for Operating Supervisory Lamps on AC at Cos Cob (5809-2), 1950
11KV & 22KV Operating Wiring Diagram, 1952 (2 copies),
6:61 Testing: blueprints, test reports, diagrams, drawings, notes, correspondence, 1937-1949
6:62 Circuit Breaker Rehab: blueprints, diagrams, notes, ca. 1943
6:63 Electrical Parts/Plans: survey reports, blueprints, correspondence, notes, memos, diagrams, instructions, 1922-1957
6:64 Electrical Parts/Plans: blueprints, diagrams, 1927-1947
6:65 Electrical Parts/Catalogs: publications, instructions, catalogs, 1933-1949
6:66 Battery Systems: diagrams, blueprints, notes, memos, 1942
6:67 Signals: blueprints, diagrams, 1922-1954
Signal circuits, Line West of Cos Cob, 1922
Signal circuits, Line West of Cos Cob, 1954 (revision)
Harlem River Branch Electrification, Signal Circuit Sectionalizing on Bridge 41-H, 1929
Providence Signal Power Substation, Schematic Diagram -- Front View Drawing, 1929
Wiring Diagram, 440V Signal Switchgear, SS-22 New Rochelle Junction, New York, 1946
Proposed Signal Power Changes at New Rochelle, 1936
Proposed Signal Circuits on Harlem River Branch, 1928
Proposed Re-arrangement of Signal Circuits & Apparatus at Tower 22 - New Rochelle, 1923
Operating Wiring Diagram (550E-6), 1945
United Illuminating Co., Signal Power Supply Structure Diagram, 1941
6:68 Anchor Bridges (AB) and Catenary (Gen'l): list of bridges, blueprints, diagrams, 1906-1949
Steel Details of Cross Arms for Signal Change, Northside, Harlem River Branch, 1949
Norwalk Tunnel, Steel Details for Proposed Revision to Catenary Supports, undated
Electrification Cost Data, 1928
Woodlawn - Stamford Electrification -- Typical Double Catenary Construction on Tangent, 1921
Elevation Showing Construction Between Bridges, undated
List of Catenary Bridges, From New York State Line to Stamford, Connecticut, 1906
List of Bridges (by number), Stations (by number), "Regular" and "Special", undated
Electrification Platford for Transformers TP #10 - New Haven Yard, undated
Line Construction Direct Suspension, Glass Trough for Overhead Insulation, 1943
Yard Catenary Construction, undated
Modified Arrangements of Control Wiring for Anchor Bridges No. 72 to No. 374 Inclusive, undated
Standard Bridge Manhole for 4 ducts or less, undated
Showing Marking of Manhole Cover for Electric Trains, 1933
Electrification, Main Bridge Construction, 1911
List of bridges (by number), stations (by number), cross section, span C to C, Number of TRs, Curve, EL hose of Steel from top of rail, Truss, North post, South post, cross-arm support, etc., for Glenbrook Electrication, undated
6:69 Catenary - Materials, Procedures, Construction: blueprints, diagrams, materials catalog, 1920-1953
Parts with numbers and drawing numbers (presumably for catenary), undated
3/4" U-Bolts
Chart for Bending Hangers and Threading Ends
Splice Plate for 3" J-Beam
Proposed Ties for Pin Insulators
Tangent Hanger Rod Lengths
Weights of Poles and Catenary Bridges
Vertical Insulator on Reg. Int. Catenary Bridge
Steel Plate Yoke for dead-ending double strain insulators
Assembly of Double Catenary Trolley Hangers
Details of Spreader and Hanger
Angle Iron Saddle for Pin Type Insulators
Porcelain Suspension Insulator: Locke nos. 10100, 18158
Type "Z0" Insulator (Switch and Bus)
Insulator - Switch and Bus Type 1947
6:70 Operations, Environmental (Air Quality, Noise): correspondence, DEP reports, 1980
6:71 Personnel- Instructional: manuals, 1927-1982
Series III: Boiler office records, undated, 1915-1986
7:72 7200 KVA Transformer: notes, receipts, diagrams, correspondence, printed materials, ca. 1946
7:73 Outgoing Switches (Gallery): blueprints, invoices, 1924-1946
7:74 Signal Generators: correspondence, notes, drawings, 1939-1954
7:75 Exciter G: specification reports, diagrams, drawings, 1922-1953
7:76 Signal Exciters: instructions, correspondence, diagrams, invoices, materials lists, diagrams, 1915, 1976, 1979
7:77 440 Volt Panels: notes, blueprints, various dates
7:78 Battery - Charging Sets DC / Circuits Station Control Batteries: correspondence, test records, instructions, publications, drawings, 1945-1969
7:79 Battery - Charging Sets DC / Circuits Boiler Room: drawings, notes, undated
7:80 Battery - Charging Sets / DC Circuits Battery Charging Set: operating instructions, installation instructions, printed material, blueprints, drawings, 1936-1948
7:81 Battery - Charging Sets / DC Circuits BC Charging Set: publications, installation instructions, operating instructions, specifications, correspondence, diagrams, packing lists, notes, receipts, 1944-1947
7:82 Auxiliary Apparatus New Electrical Air Compressor: instructions, notes, 1973
7:83 Auxiliary Apparatus #1 Air Conditioner (3 Ton) - New: installation instructions, service data, publications, correspondence, warranties, diagrams, service manuals, 1955-1965
7:84 Auxiliary Apparatus #2 Air Conditioner (7 ½ Ton) - Old: notes, publications, contracts, correspondence, invoices, blueprints, printed material, warranties, drawings, installations instructions, service instructions, 1945-1952
7:85 Auxiliary Apparatus Condensers: diagrams, 1956
7:86 Auxiliary Apparatus Hot Well Pump: drawings, notes, correspondence, instructions invoices, 1946
7:87 Auxiliary Apparatus Pipe Threading Machine: packing slip, instructions, 1939
7:88 Auxiliary Apparatus Service Water Pump: correspondence, publications, drawings, instructions, notes, 1936-1986
7:89 Auxiliary Apparatus Syntron Vibrators: blueprints, diagrams, correspondence, notes, price lists, publications, instructions, business cards, notes, various dates
7:90 Auxiliary Apparatus Welding Machine: publications, 1939
7:91 Auxiliary Apparatus Auxiliary Oil System: diagrams, undated
7:92 Auxiliary Apparatus MG Set and Silverstat: diagrams, instructions, publications, blueprints, diagrams, notes, memos, correspondence, specifications, 1947
7:93 Crane: notes, drawings, blueprintsnotes, drawings, blueprints, undated
7:94 Boiler 900: parts publication, 1943
7:95 Boiler 900-901: diagram, blueprint, instructions, notes, 1928-1929
7:96 Boiler 901: blueprints, drawings, diagrams, 1942-1954
7:97 Boiler 901 #2 Local Service Transformer: notes, undated
7:98 Boiler 901 #1 Local Service Transformer: notes, undated
7:99 Boiler 902: notes, instructions, parts data, diagrams, blueprints, drawings, requisitions, purchase orders, various dates
7:100 Boiler 902-903: Cottrell (Rappers) instructions, printed material, diagrams, blueprints, packing lists, correspondence, invoices, notes, 1929-1970
7:101 Boiler 902-903: New Rectifiers (Cattrell) diagrams, assignment sheets, 1963-1971
7:102 Boiler 903: notes, drawings, blueprints, printed material, diagrams, 1939-1954
7:103 Boiler 903: Cattrells diagrams, drawings, diagrams, correspondence, invoices, 1933-1969
7:104 Boiler 904: diagrams, blueprints, drawings, notes, ampere meters, printed material, instructions, 1940-1953
7:105 Boiler 904: Cattrell (Rappers) diagrams, correspondence, invoices, notes, printed material, 1944-1956
7:106 Boiler 904: Cattrell and Substation blueprints, diagrams, instructions, printed material, parts lists, notes, research data, correspondence, various dates
7:107 Boilers 905, 906, 907 and related: diagrams, 1979
7:108 Coal Lorries: drawings, blueprints, notes, ca. 1954
7:109 Coal Lorries: Stokers blueprints, 1929
7:110 Unit Heaters: Washroom, Boiler Room, Storehouse instructions, notes, 1941-1942
7:111 Reddy Heaters and Air Scoop Space Heaters: notes, printed material, safety instructions, owners manuals, ca. 1979
7:112 Rail Coal - North Apparatus: correspondence, blueprints, drawings, instructions, printed material, parts lists, notes, 1919-1956
7:113 Rail Coal - South Apparatus: notes, drawings, printed material, ca. 1940
7:114 Screen Hoist/Dock Pump: notes, printed material, instructions, drawings, various dates
7:115 Oil, Filters, Pumps: Transformer Oil Equipment repair records, correspondence, notes, drawings, blueprints, publications, instructions, various dates
7:116 Oil, Filters, Pumps: Turbine Oil Equipment publications, printed material, 1947-1950
7:117 Fire-Fighting Apparatus: packing lists, invoices, correspondence, memos, manuals, printed material, publications, drawings, 1948-1979
7:118 Monthly Fire Drill Reports: printed material, reports, correspondence, 1962-1969
7:119 Valve Motors: Boiler Room: instructions, printed material, instructions, parts lists, correspondence, notes, diagrams, drawings, blueprints, 1927-1952
7:120 Oil Circuit Breaker Prints: diagrams, blueprints, ca. 1945
7:121 Type CO Relays: inspection and repair records, 1947 +
7:122 Signal Circuit Breakers: parts data, diagrams, 1946
7:123 Type B (Signal) Oil Circuit Breakers: blueprints, correspondence, 1949
7:124 DA 2O Automatic Circuit Breakers: blueprints, invoices, receipts, notes, 1945-1950
7:125 DK 15 & DK25 Automatic Circuit Breakers: specifications, instructions, blueprints, diagrams, 1927-1970
8:126 Westinghouse (manuals, parts catalogs): catalogs, instructions, 1916-1944
8:127 Mianus Dam Pumping Station: blueprints, notes, instructions, diagrams, 1949-1953
8:128 Relay Protection: correspondence, blueprints, diagrams, notes, reports, instructions, 1944-1950
8:129 CA6 Relays (Differential): instructions, diagrams, correspondence, 1939-1957
8:130 60 ∼ (?) Frequency Meter: instructions, notes, correspondence, charts, 1943-1945
8:131 Switchboard Indicating Meters: instructions, notes, correspondence, diagrams, 1951-1954
8:132 Reactors: Blueprints, 1942, 1945
8:133 Synchroscope: notes, correspondence, diagrams, drawings, instructions, blueprints, 1939, 1957
8:134 Watt-Hour Meters: instructions, drawings, notes, correspondence, invoices, 1946-1950
8:135 Type R / Types M & OB Meters: parts data, instructions, 1936-1945
8:136 Type R Meters - Correspondence: notes, correspondence, drawings, notes, 1944-1957
8:137 Frequency Meter: notes, catalogs, instructions, blueprints, correspondence, ca. 1941-1942
8:138 Leeds and Northrup Correspondence: correspondence, contracts, instructions, charts, notes, reports, 1947-1975
8:139 West Farms Ammeters: notes, drawings, instructions, specifications, blueprints, price quotations, ca. 1950-1981
8:140 Generator Armature Temperature Recording: blueprints, diagrams, notes, correspondence, 1945
8:141 Generator Field Temperature Recording: blueprints, correspondence, purchase orders, invoices, 1945
8:142 Catalogs - Leeds and Northrup; General / Manuals printed material, blueprints, correspondence, diagrams, instructions, catalogs, 1937-1950
8:143 Clocks and Recording Meters: specifications, instructions, diagrams, blueprints, 1950
8:144 AC Lighting Panel: notes, 1973
8:145 Lincoln Thermal Converter: notes, printed material, 1939-1941
8:146 Printometer / Demand Meters: specifications, catalogs, correspondence, drawings, notes, 1936-1961
8:147 Demand Meters: catalogs, notes, diagrams, instructions, invoices, correspondence, invoices, 1936-1976
8:148 Contact Devices: instructions, notes, correspondence, drawings, ca. 1926-1950
8:149 60 ∼ (?) (GE) Signal Regulator: notes, drawings, 1946-1950, 67
8:150 Smoke Detectors (Boilers 902, 903, 904): drawings, notes, punch cards, parts lists, instructions, catalogs, 1969-1972
8:151 Heathkit Clocks / Clocks parts lists, instructions, notes, 1973-1974
8:152 Test Instruments Industrial Analyzer: notes, drawings, instructions, diagrams, catalogs, 1935-1941
8:153 Test Instruments Instruments, Test and Portable: notes, invoices, correspondence, identification tags, blueprints, catalogs, instructions, printed materials, 1925-1945
8:154 Test Instruments High Voltage Indicator (Neon): instructions, 1941
8:155 Test Instruments Current / Potential Transformers: notes, instructions, blueprints, 1942-1945
8:156 Charts and Records: notes, disposal records, ca. 1950
8:157 Grounding: correspondence, 1949
8:158 Brush Data: notes, correspondence, catalogs, 1956, 1978
8:159 Fuses: notes, undated
8:160 Lightning Arresters: notes, instructions, drawings, correspondence, 1941, 1951
8:161 Outdoor Underground Cable Runs: notes, blueprints, undated
8:162 High Tension Knife Switches: notes, blueprints, correspondence, memos, 1948-1950
8:163 Rheostats: correspondence, blueprints, parts lists, 1952-1953
8:164 Shop Equipment Torches, Fire Pots, etc., Vacuum Cleaner: instructions, notes, specification, undated, 1948
8:165 Shop Equipment Rubber Gloves: correspondence, identification tags, notes, 1953-1974
8:166 Shop Equipment: specifications, diagrams, purchase orders, invoices, instructions, parts lists, 1947-1957, ca. 1975
8:167 Shop Equipment Liquid Storage Tanks: instructions, diagrams, 1975
8:168 Load Dispatchers Tower Equipment: blueprints, 1947
8:169 Lighting Station Lighting: diagrams, notes, drawings, blueprints, receipts, correspondence, instructions, 1942-1951
8:170 Lighting Switchboard Lighting: notes, invoices, blueprints, purchase orders, diagrams, data sheets, 1946-1956
8:171 Lighting Emergency Lighting: notes, drawings, undated
8:172 Lighting Office Lighting, Washroom Lighting: correspondence, price quotations, catalogs, instructions, diagrams, blueprints, 1946-1947, 1954
8:173 Electric Motors, GE Switches, Contactors Relays: instructions, parts lists, 1926-1942
8:174 Electric Motors, Cutler-Hammer Parts: correspondence, catalogs, instructions, notes, parts lists, 1943-1967
8:175 Electric Motors Square D Company: instructions, 1945-1948
8:176 Spare Motors: notes, 1948
9:177 Files: clocks, switchboards, 1947, 1950
9:178 Files: lines east and west, feeder east and west, trolley east and west, var meter, 60∼ voltage, station / line voltmeters, Cos Cob load, West Farms load, system load, 25 ∼ frequency, 1946-1957
9:179 Files: generators, field temperature, armature temperature, GE demand, printometer, KWH meters, emergency lights and signals, control panel, indicating meters, 1945-1953
9:180 Files: 60∼ voltage regulators, relays - signals east and west, 1947-1966
9:181 Files: emergency signals / lighting, station alarm, KWH meters - Cos Cob, West Farms, 1942-1950
Series IV: Boiler Office files, undated, 1921-1985
9:182 Ash and Soot - Conveyor Manual: instructions, ca. 1947
9:183 Ash and Soot - Blowers: instructions, diagrams, 1942-1944
9:184 Ash and Soot - Cottrells: correspondence, price quotations, inspection reports, invoices, var. dates
9:185 Ash and Soot - United Conveyor Corporation: invoices, correspondence, purchase orders, drawings, diagrams, ca. 1945
9:186 Batteries: operating instructions, reports, 1952-1953
9:187 Boilers: correspondence, reports, notes, diagrams, sale flyers, proposals, 1925, 1977-1978, 1982
9:188 Boilers - Repairs: notes on costs, 1969-1977
9:189 Boilers - Performance Optimization Study: correspondence, report, 1976
9:190 Boiler Rehabilitation Project: contracts, proposals, correspondence, reports, price quotes, diagrams, 1976-1977
9:191 Budgets (MetroNorth): operating budget, capital budget, 1985
9:192 Circuit Breakers: manuals, instructions, catalogs, parts data, 1925-1950
9:193 Circuit Breakers - Type AB Automatic Circuit Breaker: specifications, reports, proposals, correspondence, notes, invoices, packing lists, receipts, price quotes, drawings, 1925-1957
9:194 Conduit Numbering: list of conduits, undated
9:195 Correspondence - Responsibility for Maintenance and Numbering: correspondence, 1924-1928
9:196 Correspondence - Plant Condition and Oversight: correspondence, 1924-1928
9:197 Devon - Emergency / Excess Power: correspondence to Ernest Green of Connecticut Light and Power, 1954-1961
9:198 Devon - Equipment, Inventories, Requisitions: correspondence, notes, reports, 1946-1958
9:199 Devon testing reports, repair records, notes
9:200 Devon - Plans blueprints, diagrams, correspondence, drawings, 1927-1948
9:201 Devon - Weekly Reports testing reports, notes, ca. 1963-1964
9:202 East New York - Files notes, reports, drawings, blueprints, correspondence, testing reports, repair records, 1927-1968
10:203 Electrical: log sheets, tests, correspondence, testing procedures, drawings, undated
10:204 Electrical High Tension Cable: meeting excerpts, correspondence, specifications, 1924-1925
10:205 Electrical Fittings and Parts correspondence, price changes, discount sheet, electrical wholesale catalog, test procedures, interim information, brochures, operating and service manual, 1948-1964
10:206 Electrical Controller Parts: Brownell, Cutler-Hammer merchandiser, renewal guide, price lists, correspondence, 1955-1956
10:207 Electrical Switches correspondence, brochures, catalogs, 1956
10:208 Environmental Weather Charts, 1967 May
10:209 Environmental Visible Emissions Monitoring brochure, instructions, blueprint, parts catalog, correspondence quotation, advertisement
10:210 Environmental Air Pollution Petition, correspondence, court report, order to Cos Cob Plant, explanatory decision memorandum, 1975
10:211 Environmental Air Pollution Sample analysis, correspondence, final order of EPA, errata advice, notification letter, proposed regulations registration certificate, petitioner's brief, service receipt, 1976 January - June
10:212 Environmental Air Pollution Correspondence, coal analysis, complaint, addendum, plaintiffs' notice, news clipping, order on plaintiffs' motion lab report, field report, inspection report, proposal, news clippings, 1976 June - December
10:213 Environmental Air Pollution coal analysis reports, petition, service bill, strip charts, transcript of statements, 1977-1978
10:214 Floating Power Plants correspondence, 1976
10:215 Frequency Converter Manual, 1984
10:216 Fuel Conversion Correspondence, design consideration brochure, 1976
10:217 Inventory Procedures Conrail Instructions for physical inventory, 1979
10:218 Metro North Operating Procedures, 1985
10:219 Metro North Winterization Report on winterization preparations, equipment upgrade survey, 1980
10:220 Office Furnishing Invoice, correspondence, advertisement, 1948
10:221 Operations Handbook, 1950-1975
10:222 Personnel Memoranda of agreements, mediation agreement, provisions of acts, correspondence, supervisory development program, job descriptions, news clippings, survey, electrical information, laws of New York, 1954-1977
10:223 Personnel Vacations Attendance records, 1952-1956
10:224 Personnel International Brotherhood of electrical workers Correspondence, training evaluation review forms, 1951-1977
10:225 Personnel International Brotherhood of Firemen and Oilers Correspondence, complaints, claims receipts, time card, 1956-1975
10:226 Personnel Observation summaries Safety rules observation summary, personal injury report accident prevention observation, 1975-1977
10:227 Personnel Conrail training manual “High voltage theory and techniques”, 1980
11:228 Personnel Applications and employments, 1921-
11:229 Personnel NH Service record cards, to 1967
11:230 Personnel NH Conrail Amtrak service records, 1968-
11:231 Photographs, undated
• 1988-0024.ph1 - “Rear of Plant showing Electrostatic Cinder Eliminators, induced draft fans, ash conveyors and stacks. Brick stack shows boiler #904. Short stack servers boilers #902 and #903. Tall steel stack serves boilers #900 and #901.”
• 1988-0024.ph2 - “Southeast corner of plant showing south bunkercoal conveyor, feeder towers, and ash conveyor pipe.”
• 1988-0024.ph3 - “11,000 volt, 3 phase tie in lines to consolidated Edison Co., adjacent to the plant.”
• 1988-0024.ph4 - “Coal unlading station showing yard conveyers, bulldozer, and storage pile.”
• 1988-0024.ph5 - “Ash disposal area showing C.L.&P. transmission tower.”
• 1988-0024.ph6 - “Ash disposal area showing pipe discharge.”
• 1988-0024.ph7 - “Electrical control room showing generator, signal, and local service panels.”
• 1988-0024.ph8 - “Front of boilers #902, #903, and #904 showing control panels and coal hoppers.”
• 1988-0024.ph9 - “Boiler feed water pumps”
• 1988-0024.ph10 - “One of the two coal pulverizer mills for boiler #904.”
• 1988-0024.ph11 - “Ash hopper, boiler # 904, showing ash conveyor intakes.”
• 1988-0024.ph12 - “Signal power motor generator sets.”
• 1988-0024.ph13 - “Main turbine generator sets.”
• 1988-0024.ph14 - “7200 KVA auto-transformers, 11000-22000 volt.”
• 1988-0024.ph15 - “22000 volt switch gear - east switch house.”
• 1988-0024.ph16 - “440 volt metal-clad local service switch gear and bus structure.”
• 1988-0024.ph17 - “11000 volt switch gear - stat bus.”
• 1988-0024.ph18 - “Generator cooling air washer.”
• 1988-0024.ph19 - “Mianus pumping station and dam.”
• 1988-0024.ph20 - “Diesel engines and pumps at Mianus pumping station.”
• 1988-0024.ph21 - “Unidentified company executives.”
11:232 Plans, 1927, 1937
Various manufacturers, 1947
Blue prints
11:233 Plans, 1923-1928
6-D blueprints by Gibbs & Hill Consulting Engineers, NY
9000 KW Turbine No. 1, Turbine Room Floor Framing, 6D-291, 1923 February 1
Steel support for 9000 KW Turbine, generator #1, sheet #1, 6D-294, 1923 February 1
Control and Lighting Conduit Gallery Floor, 6D-591, undated
Typical cross-section looking east, 6D-595, 1926 February 9
Electrical Connections H.T. 220000V, bus structure for transformer switching, 6D-600, undated
Diff. Proj & Battery Floating SW, Board Wiring Diagram (rear view), 6D-1010, 1928 December 31
11:234 Plans, 1928
6-S blueprints by Gibbs & Hill Consulting Engineers, NY Main Structure diagram, 6S-1001, 1928 December 31
Control Switch Board Wiring Diagram (rear view), 6S-1002, 1928 December 31
Exciter Switch Board Wiring Diagram (rear view), 6S-1003, 1928 December 31
Feeder Board, Wiring Diagram (rear view), 6S-1004, 1928 December 31
“MC” Temper & “Co” Relay Brd. Wiring Diagram (rear view), 6S-1005, 1928December 31
Recording Motor Board Wiring Diagram (rear view), 6S-1006, 1928 December 31
Bench Board Wiring Diagram (rear view), 6S-1007, 1928 December 31
Instrument Board, Wiring Diagram (rear view), 6S-1008, 1928 December 31
60∼ Signal Board Wiring Diagram (rear view), 6S-1009, 1928 December 31
11:235 Plan, 1925
6-X blueprints by Gibbs & Hill Consulting Engineers, NY Proposed arrangement of Cur. Trans. For Diff. Protection of New Generators no. 1, 2, 3, & 4, 6X-573, 1925 October 19
11:236 Plans, 1945-1952
550E and 550 X blueprints
11:237 Plans, 1946-1952
NH blueprints
11:238 Plans, 1918-1924
Westinghouse (#3) blueprints
12 in. Comb. Globe & Auto Throttle Valve (42-47-40), 1917
Stop Gov Trip Gear Assembly & Bill (42-44-32), 1917
Steam Turbine, Oil Pump Assembly & Bill (86236), 1918
K.V.A. Revolving Field A.C. Generator (42-55-99), 1918
Spindle Clearances (42-55-29), 1918
Steam Turbine, Oil Piping Assembly (62-01-95), 1920
Steam Turbine Oil Pipe Assembly (42-54-74), 1920
E.H.N.C. Steam Turbine Assembly (42-69-80), 1921
Steam Chest Assembly (42-57-45), 1922
Governor Assembly (42-02-62), undated
11:239 Plans, 1922-1926
Westinghouse (#4) blueprints
Frame 22 S.S. W.L. Condenser (5-16-00-36), 1923
Governor Linkage and Steam Piping Assembly & Bill (5-06-00-57), 1922
Outline of S.S. W.L. Condenser for NYNH&HRR Co. (4-16-04-84), 1922
Bed Plate Drilling for Foundation Bolts (4-06-23-04), 1924
Auto Stop Governor Assembly & Bill (4-06-04-98), 1923
Outline of Exhaust Connection for NYNH&HRR Co. (3-16-12-09), 1926
Outline of Exhaust Connection for NYNH&HRR Co. (3-16-02-74), 1922
128 C. W. Steam Turbine Thrust Bearing Lock Assembly & Bill (3-06-02-38), 1922
Foundation Bolts for NYNH&HRR Co. (1-16-02-53), 1922
11:240 Plans, 1945-1948
Westinghouse plans blueprints
Low Voltage Metal Enclosed Switchgear (47-J-947), 1945
440 Volt Control Board (19-A-7364), 1945
Main Relay Board 11KV Panels 3 to 6 Wiring Diagram (19-A-7357), 1945
Main Control Board (19-A-7355), 1947
Bkr. Control Schemes (19-A-7352), 1947
Circuits (19-A-7351), 1947
Nameplate Lettering Chart (14-B-6817), undated
Nameplate Lettering Chart (14-B-6956), undated
Nameplate Lettering Chart (14-B-6550), undated
Frame Mtd. Outline Assembly (13-B-8856), 1945
Supervisory Control Escutcheons - esc. Lettering chart (7-C-6757), 1948
12:241 Power Management General Correspondence, instructions, bulletin order, 1932-1973
12:242 Power management Grids, telephone diagram, 1932, 1940
12:243 Power Management Load shedding, 1958-1965
12:244 Power Management Losses, shutdowns Diagram, blueprint, operation test results and report, 3 phase power supply list, correspondence, procedure during 1961 strike, shutdown reports, 1949, 1962-1969
12:245 Power production Costs Data Electrical statements, annual reports, monthly expense reports, contract power costs, 1961-1966
12:246 Power management Final shutdown strategy (CCPS) Correspondence, planned budget costs, plans, ca. 1980
12:247 “Signals” power Information on sixty cycle signal system, testing plans, schematic diagrams, 1948
12:248 Sleet melting memorandum, sleet melting scheme, instructions, correspondence, demand metering and billing procedure, 1939-1950
12:249 Spec 550-02 Correspondence, invoices, receipts, specifications for current limiting reactors, 1945
12:250 Spec 550-03 Specifications for 440 volt switchgear, 1945
12:251 Spec 550-04 Specifications for relay switchboard and current transformers, 1945
12:252 Spec 550-05 Specifications for main control and instrument switchboard, 1945
12:253 Spec 550-06 Specifications foe varnished cambric insulated cable with shielding tape, neoprene sheath and flameproof braid for 12000 volt service, 1945
12:254 Spec 550-07 440 volt control, instrument and relay switchboard, 1945
12:255 Spec 550-08 150 KVA lighting transformers, 1945
12:256 Spec 550 Correspondence, drawing list, bus changes, 1945-1946
12:257 Spec 550 Meetings and related Memoranda, 1945-1947
12:258 Steam turbine Inspection proposal and report, 1976
12:259 Turbo Generators Correspondence, engineering and supervision of repairs report, invoices, BEI study of #3 turbo, inspection proposals, 1974-1981
12:260 Upgrade, Conrail Blueprints, plans, drawings, 1979
12:261 Voltage Regulators, 1923-1957
12:262 Water: filtering and softening Operating instructions, 1979
12:263 West Farms Data and Equipment Relay data, instructions for oil circuit breaker, diagrams, correspondence, 1936-1952
12:264 West Farms Letter File Correspondence, memoranda, diagrams, minutes, billing dates, tap changing schedule, data sheets, 1936-1975
12:265 West Farms Plans, Diagrams, blueprints, 1936-1953
12:266 Woodmont Miscellaneous Enclosed type capacitor equipment report, proposals, test charts, correspondence, drawings, voltage readings, 1945-1971
12:267 Woodmont Plans Blueprints, diagrams, 1945-1949
Series V: Boiler Office log sheets and repair records, 1926-1986
13:268 Boiler Room log sheets, 1986 January 1 - 1986 May 31
13:269 Boiler Room log sheets, 1986 June 1 - 1986 October 3
13:270 Operations Coal received, 1942 February - 1942 July
13:271 Operations Coal received, 1944 August -1945 April
13:272 Operations Coal received, 1945 December - 1948 April
13:273 Operations Daily Coal Sheets, 1961 December 30 - 1966 December 31
13:274 Operations Study - Dust from coal Storage facilities, 1980
13:275 Operations Finishing log, 1947 December 30 - 1948 August 27, 1952 August 14 - 1953 May 24
13:276 Operations Foreman's log, 1926 August 25 - 1926 December 18
13:277 Operations Foreman's log, 1928 April 10 - 1928 August 10
13:278 Operations Foreman's log, 1928 August 11 - 1928 December 13
13:279 Operations Foreman's log, 1933 May 4 - 1933 September 4
13:280 Operations Foreman's log, 1941 November 7 - 1942 March 11
13:290 Operations Foreman's log, 1945 December 7 - 1946 April 7
13:291 Operations Foreman's log, 1952 January 1 - 1952 August 31
13:292 Operations Foreman's log, 1971 October 4 - 1972 April 20
13:293 Operations Foreman's log, 1980 September 20 - 1981 February 21
13:294 Operations Foreman's log, 1984 June - 1985 March
14:295 Equipment repair records, 1930s-1981
14:296 Electric meter test cards, 1950s-1960s
14:297 Electric meter field test cards, 1952-1969
Series VI: Power plant architectural plans (rolled plans), undated
Roll 15 Detail of steelwork for gates in intake fluke
Series3565
Range1-3
16 Map of property
3681
17123-24854
17 Map of property
3681
25509-25934
18 Location of 12″ water supply from reservoir
3682
1-20
19 Location of 12″ water supply from reservoir
3682
21-32
20 Location of 12″ water supply from reservoir
3682
34-41
21 Addition to 11,000 volt bus & oil SW. struct. for local service feeders; Detail of drain piping at So. end of boiler room basement
3683-84
17002-17051
22 Addition to 11,000 volt bus & oil SW. struct. for local service feeders; Detail of drain piping at So. end of boiler room basement
3683-84
17052-17068
23 Addition to 11,000 volt bus & oil SW. struct. for local service feeders; Detail of drain piping at So. end of boiler room basement
3683-84
17073-17096
24 Addition to 11,000 volt bus & oil SW. struct. for local service feeders; Detail of drain piping at So. end of boiler room basement
3683-84
17108-17162
25 Addition to 11,000 volt bus & oil SW. struct. for local service feeders; Detail of drain piping at So. end of boiler room basement
3683-84
17168-17196
26 Addition to 11,000 volt bus & oil SW. struct. for local service feeders; Detail of drain piping at So. end of boiler room basement
3683-84
18051-19891
27 Addition to 11,000 volt bus & oil SW. struct. for local service feeders; Detail of drain piping at So. end of boiler room basement
3683-84
20001-21804
28 Addition to 11,000 volt bus & oil SW. struct. for local service feeders; Detail of drain piping at So. end of boiler room basement
3683-84
21805-24779
29 Addition to 11,000 volt bus & oil SW. struct. for local service feeders; Detail of drain piping at So. end of boiler room basement
3683-84
24853-25472
30 Addition to 11,000 volt bus & oil SW. struct. for local service feeders; Detail of drain piping at So. end of boiler room basement
3683-84
25253-25472
31 Addition to 11,000 volt bus & oil SW. struct. for local service feeders; Detail of drain piping at So. end of boiler room basement
3683-84
25612-25888
33 Addition to 11,000 volt bus & oil SW. struct. for local service feeders; Detail of drain piping at So. end of boiler room basement
3683-84
25907-29540
34 Transfer table, transformer hose
3685
17004-18413
35 Transfer table, transformer hose
3685
18556-21817
36 Transfer table, transformer hose
3685
24505-25998
37 Conduits & cables-Switchboard room
3687
1973-14—1973-20
38 Steel framing plans
3688
17016B-17021B
39 Steel framing plans
3688
17022A-17030A
40 Steel framing plans
3688
17030B-17060
41 Steel framing plans
3688
17067-17094
42 Steel framing plans
3688
17099-17112
43 Steel framing plans
3688
17113-17152
44 Steel framing plans
3688
17158-17192
45 Steel framing plans
3688
18055-18980
46 Steel framing plans
3688
24506x3-24511
47 Steel framing plans
3688
24511-24516
48 Steel framing plans
3688
24517Ax2-24521-B
49 Steel framing plans
3688
24523-24528
50 Steel framing plans
3688
24529-24891
51 Steel framing plans
3688
25481-25552
52 Steel framing plans
3688
25588-25871
53 Steel framing plans
3688
25872-25954
54 Traveling crane
4141
1 sheet
55 Inclined coal conveyor
4244
Misc.
56 Pump house
4355
1-8
57 Plan of roof & details
4750
27C—2-114
58 Plan of roof & details
4750
27C115-27C126
59 Plan of roof & details
4750
25D1—25D16
60 Plan of roof & details
4750
25D108-25D118
61 Plan of roof & details
4750
25D119-25D129
62 Plan of roof & details
4750
25D130-25D139
63 Plan of roof & details
4750
27D3-27D102
64 Plan of roof & details
4750
27D103-27D125
65 Plan of roof & details
4750
25D141—25D151, 205
66 Plan of roof & details
4750
25X36—25X56
67 Plan of roof & details
4750
25X60—25X75
68 Mianus River plant
5604
6124—6132
69 Mianus River plant
5604
6133-6172
70 Mianus River plant
5604
6212—6345
71 Toilet & locker room facility
5615
1-7
72 Profiles for water pipe lines
6257
4 Sheets
73 Restorage facilities
9822
1-5
74 Proposed bulkhead
13921
Stacks in East Boiler Room.
75 Prop. repairs to intake flume
14403
4 Sheets
76 Proposed Dam at Post Rd. Dam at Post Road
14599, 14765
3 Sheets
77 Mianus River dam - General site plan
14723
1-2
78 Mianus River dam - Foundations and trenches
14763
1-9
79 Sluice Gates, spillway, foundations
14764
1-9
80 Concrete tests at Mianus River dam
14768
1-3 sheets
81 Water supply - Mianus dam progress chart
14769
2 sheets
82 Water supply - Mianus River map
17998
1-10
83 Floor plan of switchboard room
18240
1-21
84 Floor plan of switchboard room
18240
532-E-1—532-S1
85 Floor plan of switchboard room
18240
550E-2, One Line diagram of Bus Changes
550E-3, 22KV Main Wiring Diagram
550E-4, 11KV Main Wiring Diagram
550E-6, Operating Wiring Diagram
550X-7, Study of 440V Equipment
550E-9, Wiring Diagram, Auxiliary Power – Turbine Room
550E-9, Wiring Diagram, Auxiliary Power – Boiler Room
550E-10, Wiring Diagram, Signal Equipment, Turbine Room
86 Floor plan of switchboard room
18240
550E-21, 60~ Signal Board, Wiring Diagram – Rear View
550E-30, Control Conduits for Switch House
550E-31 and 32, 11 KV Conduit Runs
550E-33, Control Conduits for 11KV Buses
550E-34, Conduits Under Switchboard Room
550E-35, Doors for 11KV Reactor Compartments on 2nd Gallery
550E-36, 440 Volt Switchgear Control Conduits
550E-37, 440 Volt Power Conduits at Switchgear
550E-38, 440 Volt Feeder Conduit Layout
550E-39, Details of Wood Blocks
87 Floor plan of switchboard room
18240
550-E-40/41, Plan view of Control Room
550-E-42, Plan view of East Boiler Room
550-E-43, Panel dimensions
550-E-44, Elevation view of Field Circuit-breakers
550-E-45, Plan view of 440 Volt Switchgear
550-E-46, Emergency Signal Circuit-breakers
550-E-47, Elevation view of local Service Transformers
550-E-48, Termination of Generator leads
550-E-49, Panel details
88 Floor plan of switchboard room
18240
550-E-50, WD, Recording meters panel
550-E-51, Section and Elecvation views of Bus connections to cables and switches
550-E-52, Bus connections to Generator Circuit-breakers
550-E-53, Plan view of Back Bus
550-E-54, Section view through Back Bus
550-E-55, Star Bus Reactor connections
550-E-56, Section view through Front and Back Bus sections
550-E-57, Plan view of Back Bus
550-E-58, 22KV Out-Door switches
550-E-59, Connection of cables from Track-circuits at Switch house
89 Floor plan of switchboard room
18240
550-E-60, 22 KV Bus assembly
550-E-61, Plan view of 22KV Buses
550-E-62, Elecvation view of cable-connections between Traction-Power transformers and Dis-Connect switches
550-E-63, Section view across Switch house looking North
550-E-64, Elevation view of Bus connections to 22KV Circuit-breakers
550-E-65, Plan and elevation view of Traction-Power transformers
550-E-66, Elevation view of Dis-Connect switches for 22KV Circuit-breakers
550-E-67, Plan view of Switch house
550-E-68/69, Pull-Box for cables from Generator No. 3
550-E-70, Plan view of Switch house
90 Floor plan of switchboard room
18240
550-E-71/72/73, 22KV Bus supports
550-E-74, Transite barriers
550-E-75, Circuit-breaker supports
550-E-77, WD, D.C. power
550-E-78, WD, Synchronization
550-E-79, WD, Exciter Switchboard
91 Floor plan of switchboard room
18240
550-E-80, Plan and elevation views of West Farms Tie-Circuits in Switch house
550-E-81, 22KV Outdoor switches
550-E-82, Panel details
550-E-83, Plan view of Power house and Switch house South of Turbine Hall
550-E-84, WD, 11KV Bus differential protective relay scheme
550-E-85, Plan view of Power house and Switch house South of Turbine Hall
550-E-86, 22KV Outdoor switches
550-E-87, Plan view of Front and Back BU sections and Local service transformers
550-E-88, Plan view of Switch house
550-E-89, Plan view of 440 Volt Switchgear
92 Floor plan of switchboard room
18240
550-E-90, Plan view of compartments where generator leads terminated on current transformers
550-E-91, Plan view of Power house and Switch house South of Turbine Hall
550-E-92, Plan view of transformers
550-E-93, Control room details
550-E-94, Plan view of Control room
550-E-95, 60 cycle motor generator set
550-E-96, 22KV outdoor switches
550-E-98, Plan view of Back Bus
550-E-99, Motor generator set
550-E-100, WD, Recording meters panel
550-E-101, WD, 1-Line D.C. power
550-E-102, Elevation view of Generator No. 3 pull box over Bus structure
93 Floor plan of switchboard room
18240
611 S8-2—634 S2
94 Boiler instal. - main & aux steam piping
18241
456-S-1D5-456-S-10-D4
95 Boiler instal. - main & aux steam piping, 1942
18241
456-S11-D3, Basement Flood – Boiler room, Walls and Floor to be Removed
456-S12-D5, Plan of Boiler Platform, Gratings
456-S13-D3, Foundation Plan and Details for Stack Precipitator and Substation
456-S14-D3, Substation and Walkways
456-S15-D4, Structural Steel Details, Operating Floor and Coal Larry Level
456-S16-D4, Structural Steel Details, Operating Floor
456-S17-D3, Structural Steel Details, Operating Floor
456-S18-D2, Structural Steel Details, Stairs
456-S19-D2, Structural Steel Details, East Wall
456-S20-D1, Structural Steel Details, East Wall
96 Boiler instal. - main & aux steam piping
18241
456-21D4-456-32D1
97 Boiler instal. - main & aux steam piping
18241
456-E-1,D3—456-E90-2
98 Boiler instal. - main & aux steam piping
18241
456-M-1C—456-M-10E
99 Boiler instal. - main & aux steam piping
18241
456-X-19—456B-54C
100 Emergency Connection with G.W.Co
14747
Embankment Protection
47019
Contour map of Mianus
14399
River Valley
17352X53-60
Water supply: valve chamber
5398
Det. vicinity of power house
Proposed Bypass
14401
17352
101 Survey at coal handling crane
14410
Intake Flume
14169
Additional water supply
14395
13787X2.
102 Fly-ash bank
46930
Instal. of overflow pipe & fly-ash storage tank
46957
Cos Cob Power Plant
13851
2991
5700 gal. oil tank spill cont. berm
46993
Cross sections at prop. struct. locations
46745
103 Prop. pipeline from Mianus River
14398
16″ pipeline inlet crossing - Mianus River dam
5399
Cos Cob wat. supply - Mianus
14741
River Dam 10″ drain - E. of Bridge - Boston Post Rd. Additional water supply piping
14400
River Dam 10″ drain - E. of Bridge - Boston Post Rd. Additional water supply piping
14396
Prop. pipeline from Mianus River
14398
Pipeline blow off - Mianus River dam
5401-1-2