spected each time a unit is in shop for general or heavy repairs.

(b) Cleaning underframe. Underframe, trucks, fuel tanks and brake rigging shall be kept free of accumulations of oil, grease and debris that would constitute a fire hazard.

[23 F.R. 2218, Apr. 23, 1958]

§ 91.222 Spring rigging.

(c) In absence of protective construction, safety hangers shall be provided which will prevent spring planks, spring seats or bolsters from dropping to track structure in event of hanger or spring failure.

[Paragraph (c) added, 23 F.R. 2219, Apr. 4, 1958]

§ 91.223 Trucks-(a) Center plates. Truck center plates shall fit properly and be securely fastened. The male center plate shall extend into the female center plate not less than 34 inch. On trucks constructed to transmit tractive effort through center plate or center pin, the male center plate shall extend into the female center plate not less than 12 inches. Center plates shall be securely fastened, and ones of the type requiring lubrication, shall be properly lubricated and maintained. Maximum lost motion in a center plate assemblage shall not exceed 1⁄2 inch. These limits may be adjusted if upon application to the director his investigation shows that conditions so require.

[Paragraph (a) amended, 23 F.R. 2219, Apr. 4, 1958]

(2) Mill scale shall be removed from plate and entire wheel then inspected before application to axle. Wheels shall be kept free from accumulations of oil, grease, or other material that could conceal cracks or other defects.

Interpretation: The first sentence of the second paragraph of this rule requires that wheels mounted on axles on and after the effective date of the rule shall have mill scale removed before application.

The second sentence of the second paragraph is not intended to impose unreasonable requirements, but is construed to mean that wheels shall be kept reasonably clean, so as to permit detection of cracks and other defects in the course of normal inspection. [Paragraph (a) amended, 24 F.R. 476, Jan. 21, 1959] Prior Amendments 1958: 23 F.R. 2218, Apr. 4.

(0) Fusion welding. Fusion welding shall not be used on tires or rolled steel wheels including building up of worn flanges, flat spots, shelled-out spots or for repair of cracks, except on locomotives used in switching and transfer service, and then only for repair of flat spots and worn flanges.

[Paragraph (o) added, 23 F.R. 2219, Apr. 4, 1958]

CABS, CAB APRONS, PILOTS

§ 91.229 Cabs and aprons.

(b) Fastening and bracing; windows. Cabs and superstructures shall be securely attached and braced. Cab windows shall be so located and maintained that the enginemen may have a clear view of track and signals from their usual and proper positions in the cab. All glass used in doors and windows of enginemen's compartments shall be of the shatter-proof type. Units not presently so equipped shall have shatterproof glass installed at the first general

repairs but not later than December 31, 1958.

(d) Floors. Deck plates and floors of cabs, passageways, and compartments shall be kept free from oil, water, waste, or any obstruction that will create unnecessary peril. Deck plates and metal floors shall be properly roughened or other provisions made to afford secure footing.

[Paragraphs (b) and (d) amended, 23 F.R. 2219, Apr. 4, 1958]

(f) Heating. (1) Enginemen's compartments shall be provided with heating arrangements that will maintain therein a temperature of not less than 50° F. Temperature shall be taken at substantially the center of compartment under normal winter weather conditions, under the running conditions of the locomotive, with doors and windows closed.

(2) Operating cabs or compartments shall be provided with proper ventilation.

Interpretation: The concluding sentence of this rule means that, regardless of adjustments of doors and windows, further ventilation shall be supplied to cabs by means of additional openings, located as required.

(g) Passage between units. Safe and suitable means shall be provided for passage between units with open-end platforms.

Interpretation: This rule applies to similar units coupled in multiple control and operated in road service. By the term "open end platform" is meant units with platforms not protected their full width by a continuous barrier and which permit an open passageway between the platforms of two similar units coupled together. No passageway will be required through the nose-end of car-body type units similar in design to present diesel-electric "A" type units. [Paragraphs (f) and (g) amended, 24 F.R. 477, Jan. 21, 1959]

Prior Amendments

1958: 23 F.R. 2218, Apr. 4.

(h) Fusees and torpedoes. Containers shall be provided for carrying fusees and torpedoes. These containers may be separate, or a single container with suitable partition to separate the fusees from the torpedoes.

(i) Fan openings. Fan openings in hazardous locations shall be properly protected.

[Paragraphs (h) and (1) added, 23 F.R. 2219, Apr. 4, 1958]

LIGHTS

§ 91.232 Classification or marker lights. Each locomotive shall be provided with such classification and marker lamps as may be required by the rules of the railroad company operating the locomotive. When such lamps are used they shall be kept clean. The classification lights shall be electrically lighted and adequate head clearance shall be provided. Necessary safe and suitable steps, toe boards, handrails and/or handholds shall be provided in order to make cab windows, headlights, classification lights, marker lights, pantographs and trolleys accessible for attention and care. [23 F.R. 2219, Apr. 4, 1958]

ELECTRICAL EQUIPMENT

§ 91.247 Jumpers; cable connections. (a) General precautions. Jumpers or cable connections between locomotives or units shall be so located and guarded to prevent unnecessary peril, and shall not be allowed to hang with one end free.

Interpretation: The requirements of this rule relating to the location and guarding of jumpers and cable connections are satisfled by installing a device which will support the cable at a sufficient height to provide reasonable clearance.

[Paragraph (a) amended, 24 F.R. 477, Jan. 21, 1959]

Prior Amendments 1958: 23 F.R. 2218, Apr. 4.

ture striking pole piece; short circuited armature or field coil; loose or broken armature coil bands or wedges.

(b) Motors, generators and their related wiring shall be maintained free from oil and sediment that could cause flash or fire hazard.

[23 F.R. 2220, Apr. 4, 1958]

§ 91.251 Rheostats and grid resistors. Rheostats and resistors shall be maintained free from accumulations of dirt or extraneous matter.

[23 F.R. 2220, Apr. 4, 1958]

INTERNAL COMBUSTION EQUIPMENT

§ 91.255 Fuel tanks and piping; safety cut-out valve.

(b) A safety cut-out valve shall be provided in the fuel line adjacent to the supply tank, or in other safe location, which will automatically close when tripped. The cut-out valves shall be designed for hand operation from both outer sides of the unit and from inside of the enginemen's compartment. Operating handle locations shall be designated. Means shall be provided so that cut-out valves may be reset without hazard.

Interpretation: The requirements of the last sentence of this rule are satisfied if the cut-out valves may be reset without the necessity for employee getting under the locomotive.

[Paragraph (b) amended, 24 F.R. 477, Jan. 21, 1959]

Prior Amendments

1958: 23 F.R. 2218, Apr. 4.

§ 91.259 Exhaust gases. Exhaust gases shall be released entirely outside of cab or other compartments. Exhaust stacks shall be of sufficient height or other means provided which will prevent entry of exhaust gases into enginemen's compartments under usual conditions of operation.

[23 F.R. 2220, Apr. 4, 1958]

§ 91.262 Engines and accessories—(a) Tagging for repairs. Internal combustion engines shall be maintained in a safe and suitable condition for service. Whenever any internal combustion engine has been shut down because of defects and the unit is continued in service

a distinctive tag giving reason fo shut-down shall be conspicuously tached near the engine starting co and shall remain attached until re have been made.

(b) Cleaning. All engines and cessories shall be kept reasonably from oil and water leaks and from cumulations of oil or debris.

(c) Alarms. Temperature and p sure alarms, controls and rela switches shall be properly maintaine [23 F.R. 2220, Apr. 4, 1958]

BOILERS USED WITH LOCOMOTIVES OT THAN STEAM

§ 91.303 Boiler number; badge pla location. * *

(b) A metal badge plate showing t name and boiler number and safe wor ing pressure shall be attached to ea boiler. The badge plate on each stea boiler, except those boilers of the forc circulation type, shall be provided wi a line indicating the lowest permissib water level and shall be attached to t boiler adjacent to the water glass. T badge plate on each hot-water boil shall be attached to the boiler adjace to the firing opening. If boiler is lagge the lagging and jacket shall be away so that plate can be seen. [Paragraph (b) amended, 23 F.R. 2220, A 4, 1958]

§ 91.307 Fuse plugs; low water alar

(c) All other alarms and prote tive devices with which the boiler equipped shall be inspected and test at least once every 3 months, and reco of such inspections and tests maintain by the railroad using the boiler. [Paragraph (c) added, 23 F.R. 2220, Apr. 1958]

§ 91.308 Exterior boilers-(a) Inspe tion. The exterior of every boiler a steam separator shall be thoroughly i spected before it is put into service, a whenever the jacket and lagging, or ca ing, are removed. The jacket and la ging shall be removed at least once eve 5 years from internally fired boilers, a from pressure parts of other boilers, a a thorough inspection made of the e tire exterior surface while under hydr

static pressure. The jacket and lagging shall also be removed whenever on account of indication of leaks the United States inspector or the railroad company's inspector considers it desirable or necessary.

(b) Testing after repairs. Before a boiler that has been out of service for 3 consecutive months or more is again used all automatic controls and safety devices shall be tested; any found defective shall be repaired and statement to effect that said devices are in proper working condition made on back of Form No. 1-B.

[23 F.R. 2220, Apr. 4, 1958]

§ 91.316 Safety valves—(a) Capacity, connection to boiler, location. Every steam boiler shall be equipped with at least two safety valves and every hotwater boiler shall be equipped with at least one water relief valve, the capacity of which shall be sufficient to prevent, under any conditions of service, an accumulation of pressure of more than 5 pounds above the allowed working pressure. The safety valves shall be connected with the boiler independent of any other connection, and located as closely to the boiler as may be consistent without discharging inside of cab. Water relief valves may be mounted on the expansion tank of hot-water boilers provided no valves are interposed between the expansion tank and the boiler. Sufficient clearance to prevent damage shall be provided where safety or relief valves or connections pass through cab structure. Ends of safety valve discharge lines shall be so located or protected as to not constitute a hazard from discharged steam.

[Paragraph (a) amended, 23 F.R. 2220, Apr. 4, 1958]

§ 91.317 Water glass and gauge cocks-(a) Lowest reading; danger lines. Every steam boiler, except those of the forced circulation type, shall be equipped with at least one water glass, and 3 gauge cocks which can be easily opened and closed by hand. The lowest gauge cock and the lowest reading of the water glass and the line on the badge plate shall correspond and be not less than 2 inches above the danger line. The danger line

shall be that at which there will be no danger of overheating any part of the boiler. The danger line for vertical firetube boilers shall be not less than onehalf the length of the tube above the lower tube sheet; and for vertical submerged tube boilers, the upper surface of the top tube sheet.

(b) Water-glass valves. All water glasses shall be supplied with two valves, one in the upper and one in the lower connection to the boiler, and a drain valve, so constructed and located that the valves can be easily opened and closed by hand. Drain pipes shall discharge below decks or into a drain pipe so arranged to prevent splash from steam and water.

(c) Cleaning. The spindles of all gauge cocks, fill-test valves and waterglass valves shall be removed and cocks and valves thorougl.ly cleaned each time the boiler is washed.

[Paragraphs (a), (b) and (c) amended, 23 F.R. 2220, Apr. 4, 1958]

*

(g) Drip pans. Drip pans shall be provided for gauge cock discharge so arranged to prevent splash from steam and water.

(h) Water-flow indicators. Forced circulation boilers of the spill-over type not equipped with water glass and gauge cocks shall be equipped with a visual return water flow indicator.

(i) Fill test valves. Forced circulation boilers shall be equipped with a fill test valve or other means of determining when the boiler is filled with water. [Paragraphs (g), (h) and (1) added, 23 F.R. 2220, Apr. 4, 1958]

§ 91.320 Boiler washing.

(b) Record. An accurate record of all boiler washouts shall be kept in the office of the railroad company and a copy of the last record kept in the boiler compartment. The following information must be given on the day that the boiler is washed: Number of boiler; number of locomotive unit on which it is mounted; date of washout; signature of boiler washer or inspector who knows that boiler was washed; statement if spindles of gauge cocks, fill-test valves, test cocks and water-glass valves were removed and cocks and valves cleaned;

signature of the inspector or employee who removed the spindles and cleaned the cocks and valves.

[Paragraph (b) amended, 23 F.R. 2220, Apr. 4, 1958]

§ 91.321

Leaks.

(d) In new construction, or when renewals are made of iron or steel pipes in cabs that are subject to boiler pressures of more than 150 pounds per square inch, commercially designated extra strong pipe and extra heavy valves and fittings shall be used.

(e) Whenever any boiler or steam generator has been shut down because of defects and the unit in which it is installed is continued in service, a distinctive tag giving reasons for the shut-down shall be conspicuously attached near the starting controls and shall remain attached until repairs have been made. [Paragraphs (d) and (e) added, 23 F.R. 2220, Apr. 4, 1958]

(b) Safety cut-out valve. A safety cut-out valve shall be provided in the fuel line adjacent to the supply tank, or in other safe location, which will automatically close when tripped. The cutout valves shall be designed for hand operation from both outer sides of the unit and from inside of the enginemen's compartment. Operating handle locations shall be designated. Means shall be provided so that cut-out valves may be reset without hazard.

Interpretation: The requirements of the last sentence of this rule are satisfied if the cut-out valves may be reset without the necessity for employee getting under the locomotive.

[Paragraph (b) amended, 24 F.R. 477, Jan. 21, 1959]

Prior Amendments 1958: 23 F.R. 2221, Apr. 4.

§ 91.327 Oil burning fire boxes-(a) Gases in fire box. Means shall be provided for expelling accumulated gases from fire box of oil-burning boilers before fire is lighted. Products of combustion shall be released entirely outside of

§ 91.334 Extensions. *

(d) Brake equipment. Cleaning of distributing valve, control valve, triple valve, brake application valve, equalizing piston portion, feed and reducing valves, straight air double check valves, transfer valve, safety valves, brake pipe vent valves, relay valves, magnet valves, electro-pneumatic master controller, dirt collectors and filters, as required by § 91.208 (a), will be due after 6 calendar months' service, provided such service is performed within 12 consecutive months. [Paragraph (d) amended, 23 F.R. 2221, Apr. 4, 1958]

ACCIDENTS

§ 91.337 Changes to meet requirements. Changes in construction which are necessary to meet the requirements of the rules in this part shall be made as rapidly as conditions permit, and all such changes, except as otherwise specified shall be completed before January 1, 1959.

[23 F.R. 2221, Apr. 4, 1958]

PARTS 95-97: CAR SERVICE: ROUTING TERMINALS

PART 95-CAR SERVICE

NOTE: Service orders issued under this part are published in the FEDERAL REGISTER.

PART 97-ROUTING OF TRAFFIC

NOTE: Service orders issued under this part are published in the FEDERAI, REGISTER.