ACF Type 27 tank car?
This is interesting -- an ex-GULF tank car (WRNX? perhaps) now in B&O mofw service.
It sure looks like an 8,000 gallon ACF Type 27 -- but I think the dome is a bit larger in diameter
than the Intermountain model. Any idea why they would want a larger dome on an otherwise
ordinary ICC 103 tank car?
An Ebay grab from a seller Chris Barkan pointed out to me -- nice scans, but not steam era.
--
Tim O'Connor
Sterling, Massachusetts
Any idea why they would want a larger dome on an otherwiseAs we've discussed before, it seems to have come down to customer preference. I don't know anything about the history of this particular car, but a quick perusal of the Gulf fleet in the 1936 tariff reveals a bunch of 265-, 295-, and even 355-gal (!) domes -- all on 8000-gal cars! With a 2% minimum for Class III/103 cars, these are clearly oversized, some extremely so.
ordinary ICC 103 tank car?
Why? I can only assume that it was to minimize instances in which additional headspace would need to be provided beyond what the dome itself provided. The two larger sizes probably guaranteed that for gasoline and naphtha, but specialty chemicals like acetone and ether could, depending on loading temperature, require very large expansion volumes.
--
Dave Parker
Swall Meadows, CA
Looks a lot like this one, I think.
Steve Hile
Sent: Wednesday, March 22, 2023 6:33 PM
To: RealSTMFC@groups.io; bbfcl@groups.io
Subject: [RealSTMFC] ACF Type 27 tank car?
This is interesting -- an ex-GULF tank car (WRNX? perhaps) now in B&O mofw service.
It sure looks like an 8,000 gallon ACF Type 27 -- but I think the dome is a bit larger in diameter
than the Intermountain model. Any idea why they would want a larger dome on an otherwise
ordinary ICC 103 tank car?
An Ebay grab from a seller Chris Barkan pointed out to me -- nice scans, but not steam era.
--
Tim O'Connor
Sterling, Massachusetts
This is interesting -- an ex-GULF tank car (WRNX? perhaps) now in B&O mofw service.
It sure looks like an 8,000 gallon ACF Type 27 -- but I think the dome is a bit larger in diameter
than the Intermountain model. Any idea why they would want a larger dome on an otherwise
ordinary ICC 103 tank car?
Some out-of-list-era information:
Tim's attached photo shows an ex-Gulf tank car in B&O company service as X-485, at Youngstown, Ohio, Center Street Junction during 1977-1981 from an unknown prolific photographer there. There were at least two such B&O tank cars, (X-484, X-485) per photographic evidence, maybe several others.
Gulf Refining suffered a catastrophic fire at their Philadelphia refinery in 1975, which may have made some tank cars surplus.
Gulf had long been a diesel fuel supply vendor for B&O, in daily communication.
Slightly in-list-era information:
Since the beginning of dieselization, B&O maintained a fleet of largely secondhand tank cars for diesel fuel and lube oil service. Many were stationary service with visible dispensing pumps, including tanks and tank car bodies mounted on flat cars, along with wheeled tank cars. Additional such tank cars without pumps were often stationary, connected to the dispensing tank car for additional site capacity.
Evidence strongly suggests some B&O company service tank cars circulated around the B&O system. The company X-numbers would require home-road use only. B&O ownership would benefit B&O by (1) eliminating all car hire charges, i.e. hauling fuel or lube oil around at B&O discretion with no accumulating freight charges to consider, (2) operational flexibility for loitering around railroad property while waitng for the next trip, or unexpedited unloading, and (3) covering for any outside tank car car supply interruptions.
Origination and destination for B&O company tank car trips is still speculative. Loading at an on-line refinery? Which B&O terminal destinations would routinely benefit from deliveries in a B&O company tank car? Small outlying points? Good guesses yet unsupported by surviving literature. The B&O company tank car fleet was not large enough to handle even a significant fraction of diesel fuel consumption, which mostly arrived in private tank cars.
As I recall, the GATX tank car rental business concentrated on the petroleum trade, suggesting GATX tank cars for diesel fuel resupply in our modeling themes. All roads, all diesel eras.
Attached is longtime fuel dispensing tank car residient to North Vernon, Ind., shown in 1965, a Tom Underwood photo., Barriger library collection. Note disconnected rail on right. Blue paint and yellow chains seem to be a local touch. These cars, stationary or mobile, tended to be black. How do I know? Black and white photos of course! :). Also, B&O steel company service freight cars were black by printed instruction and practice.
On Wed, Mar 22, 2023 at 04:33 PM, Tim O'Connor wrote:Dave, I think your supposition is spot on. To put expansion in perspective, the coefficients of expansion for gasoline, kerosene, and similar petroleum products are a bit less than 0.001 per degree centigrade, so a temperature rise of 20 C, or 36 F is enough to cause 2% expansion. It seems that could occur frequently.
Any idea why they would want a larger dome on an otherwiseAs we've discussed before, it seems to have come down to customer preference. I don't know anything about the history of this particular car, but a quick perusal of the Gulf fleet in the 1936 tariff reveals a bunch of 265-, 295-, and even 355-gal (!) domes -- all on 8000-gal cars! With a 2% minimum for Class III/103 cars, these are clearly oversized, some extremely so.
ordinary ICC 103 tank car?
Why? I can only assume that it was to minimize instances in which additional headspace would need to be provided beyond what the dome itself provided. The two larger sizes probably guaranteed that for gasoline and naphtha, but specialty chemicals like acetone and ether could, depending on loading temperature, require very large expansion volumes.
But a refinery that loads product under winter weather conditions could reasonably expect greater temperature differentials seasonally. A larger dome would be a cheap way to avoid gauging outage, and to fully load tank cars year round.
Jack
Some out-of-list-era information:
Tim's attached photo shows an ex-Gulf tank car in B&O company service as X-485, at Youngstown, Ohio, Center Street Junction during 1977-1981 from an unknown prolific photographer there. There were at least two such B&O tank cars, (X-484, X-485) per photographic evidence, maybe several others.
Gulf Refining suffered a catastrophic fire at their Philadelphia refinery in 1975, which may have made some tank cars surplus.
Gulf had long been a diesel fuel supply vendor for B&O, in daily communication.
Slightly in-list-era information:
Since the beginning of dieselization, B&O maintained a fleet of largely secondhand tank cars for diesel fuel and lube oil service. Many were stationary service with visible dispensing pumps, including tanks and tank car bodies mounted on flat cars, along with wheeled tank cars. Additional such tank cars without pumps were often stationary, connected to the dispensing tank car for additional site capacity.
Evidence strongly suggests some B&O company service tank cars circulated around the B&O system. The company X-numbers would require home-road use only. B&O ownership would benefit B&O by (1) eliminating all car hire charges, i.e. hauling fuel or lube oil around at B&O discretion with no accumulating freight charges to consider, (2) operational flexibility for loitering around railroad property while waitng for the next trip, or unexpedited unloading, and (3) covering for any outside tank car car supply interruptions.
Origination and destination for B&O company tank car trips is still speculative. Loading at an on-line refinery? Which B&O terminal destinations would routinely benefit from deliveries in a B&O company tank car? Small outlying points? Good guesses yet unsupported by surviving literature. The B&O company tank car fleet was not large enough to handle even a significant fraction of diesel fuel consumption, which mostly arrived in private tank cars.
As I recall, the GATX tank car rental business concentrated on the petroleum trade, suggesting GATX tank cars for diesel fuel resupply in our modeling themes. All roads, all diesel eras.
Attached is longtime fuel dispensing tank car residient to North Vernon, Ind., shown in 1965, a Tom Underwood photo., Barriger library collection. Note disconnected rail on right. Blue paint and yellow chains seem to be a local touch. These cars, stationary or mobile, tended to be black. How do I know? Black and white photos of course! :). Also, B&O steel company service freight cars were black by printed instruction and practice.
Attachments:
Some out-of-list-era information:
Tim's attached photo shows an ex-Gulf tank car in B&O company service as X-485, at Youngstown, Ohio, Center Street Junction during 1977-1981 from an unknown prolific photographer there. There were at least two such B&O tank cars, (X-484, X-485) per photographic evidence, maybe several others.
Gulf Refining suffered a catastrophic fire at their Philadelphia refinery in 1975, which may have made some tank cars surplus.
Gulf had long been a diesel fuel supply vendor for B&O, in daily communication.
Slightly in-list-era information:
Since the beginning of dieselization, B&O maintained a fleet of largely secondhand tank cars for diesel fuel and lube oil service. Many were stationary service with visible dispensing pumps, including tanks and tank car bodies mounted on flat cars, along with wheeled tank cars. Additional such tank cars without pumps were often stationary, connected to the dispensing tank car for additional site capacity.
Evidence strongly suggests some B&O company service tank cars circulated around the B&O system. The company X-numbers would require home-road use only. B&O ownership would benefit B&O by (1) eliminating all car hire charges, i.e. hauling fuel or lube oil around at B&O discretion with no accumulating freight charges to consider, (2) operational flexibility for loitering around railroad property while waitng for the next trip, or unexpedited unloading, and (3) covering for any outside tank car car supply interruptions.
Origination and destination for B&O company tank car trips is still speculative. Loading at an on-line refinery? Which B&O terminal destinations would routinely benefit from deliveries in a B&O company tank car? Small outlying points? Good guesses yet unsupported by surviving literature. The B&O company tank car fleet was not large enough to handle even a significant fraction of diesel fuel consumption, which mostly arrived in private tank cars.
As I recall, the GATX tank car rental business concentrated on the petroleum trade, suggesting GATX tank cars for diesel fuel resupply in our modeling themes. All roads, all diesel eras.
Attached is longtime fuel dispensing tank car residient to North Vernon, Ind., shown in 1965, a Tom Underwood photo., Barriger library collection. Note disconnected rail on right. Blue paint and yellow chains seem to be a local touch. These cars, stationary or mobile, tended to be black. How do I know? Black and white photos of course! :). Also, B&O steel company service freight cars were black by printed instruction and practice.
Attachments:
Some out-of-list-era information:
Tim's attached photo shows an ex-Gulf tank car in B&O company service as X-485, at Youngstown, Ohio, Center Street Junction during 1977-1981 from an unknown prolific photographer there. There were at least two such B&O tank cars, (X-484, X-485) per photographic evidence, maybe several others.
Gulf Refining suffered a catastrophic fire at their Philadelphia refinery in 1975, which may have made some tank cars surplus.
Gulf had long been a diesel fuel supply vendor for B&O, in daily communication.
Slightly in-list-era information:
Since the beginning of dieselization, B&O maintained a fleet of largely secondhand tank cars for diesel fuel and lube oil service. Many were stationary service with visible dispensing pumps, including tanks and tank car bodies mounted on flat cars, along with wheeled tank cars. Additional such tank cars without pumps were often stationary, connected to the dispensing tank car for additional site capacity.
Evidence strongly suggests some B&O company service tank cars circulated around the B&O system. The company X-numbers would require home-road use only. B&O ownership would benefit B&O by (1) eliminating all car hire charges, i.e. hauling fuel or lube oil around at B&O discretion with no accumulating freight charges to consider, (2) operational flexibility for loitering around railroad property while waitng for the next trip, or unexpedited unloading, and (3) covering for any outside tank car car supply interruptions.
Origination and destination for B&O company tank car trips is still speculative. Loading at an on-line refinery? Which B&O terminal destinations would routinely benefit from deliveries in a B&O company tank car? Small outlying points? Good guesses yet unsupported by surviving literature. The B&O company tank car fleet was not large enough to handle even a significant fraction of diesel fuel consumption, which mostly arrived in private tank cars.
As I recall, the GATX tank car rental business concentrated on the petroleum trade, suggesting GATX tank cars for diesel fuel resupply in our modeling themes. All roads, all diesel eras.
Attached is longtime fuel dispensing tank car residient to North Vernon, Ind., shown in 1965, a Tom Underwood photo., Barriger library collection. Note disconnected rail on right. Blue paint and yellow chains seem to be a local touch. These cars, stationary or mobile, tended to be black. How do I know? Black and white photos of course! :). Also, B&O steel company service freight cars were black by printed instruction and practice.
Attachments: