Talk:Texas City refinery explosion
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Untitled
[edit]I recommend the following improvements to this article:
1) Is there a source to confirm that a carburetor was the source of the explosion? I doubt that a truck on site at the refinery used a carburetor. Perhaps fuel injector is more appropriate, but "fuel system" would be preferred if the actual source is unknown.
2) The comparison to Chernobyl seems superfluous and illegitimate. It is not explained, nor was any evidence found in the US Chemical Safety Board's animation. I will be removing this.
3) Language explaining the actual ignition at the truck seems contrived. I'm not the one to do it, but let's clean it up with more technical phrasing.
4) Incorporation of the following article into the accident description:
http://news.yahoo.com/s/ap/20070320/ap_on_bi_ge/bp_plant_explosion
All in all, this seems to be a description of the explosion more than the refinery. Perhaps the explosion section should be moved to it's own article.
--67.176.29.1 22:05, 25 March 2007 (UTC)
- Comment: On item (1) above, perhaps it would be better to change "carburetor" to "intake". The History Channel's Engineering Disasters piece on the explosion stated it was a diesel truck. This seems consistent with the report that the engine was heard to rev when the vapors reached the intake, which is a likely occurence in a diesel engine when flamable vapors or liquids are introduced into the intake. This is much less likely to occur on a gasoline engine (implied by the carburetor mentioned in the current version of the article), where continued combustion at higher RPM's would have required greater airflow from opening the throttle to maintain a combustible air/fuel ratio. Diesel engines, on the otherhand, do not have actual throttle valves. The engine speed is controlled by varying the amount of fuel either injected into the cylinder or atomized into the intake air before the intake valve(s). The intake is free to take in air (or in this case, flammable vapors) unrestricted. From this distinction between how diesel and gasoline engines operate, my opinion is that "carburetor" should probably be struck from the article and replaced with "air intake". Ryanniemi (talk) 01:24, 17 April 2008 (UTC)
- Comment: I've made the correction in the article that I commented on above. Ryanniemi (talk) 10:23, 20 April 2008 (UTC)
'Subsequent incidents' and article continuity
[edit]The 'Subsequent incidents' section includes the 2008 death of William Joseph Gracia. The following section begins 'Following these additional safety incidents, on 17-Aug-2005'. This does not make sense. An event in 2005 cannot occur following a 2008 event.
All other incidents mentioned in this section occurred pre-August 2005. Furthermore, these other incidents are all "process safety" incidents. The subsequent section deals specifically with process safety incidents.
The simplest solution is to remove the William Joseph Gracia incident. Sad as such incidents are, this particular industrial accident is not notable and is not presented in context. I will remove this from the article. - Crosbiesmith (talk) 19:25, 3 July 2009 (UTC)
- Removed. - Crosbiesmith (talk) 19:53, 31 October 2009 (UTC)
- Not clear why. The section is explicitly titled "Subsequent incidents", which means subsequent to the March 23, 2005 explosion. I see nothing wrong with having a January 28, 2008 incident follow a March 23, 2005 event. Since the incident is documented, there is no reason not to list it. Victor Victoria (talk) 15:00, 1 November 2009 (UTC)
- Done. I believe the "subsequent incidents" only need to list process safety ones. Occupational accidents, although tragic, are not relevant to the case in point. I have also ensured the bullet list heading clarifies that it refers to process safety accidents. JudeFawley (talk) 05:14, 22 January 2024 (UTC)
Article name
[edit]Concern on the name: As a general rule an article name should either
- Reflect a widely used name for the topic that is reasonably unique (i.e. that name should be generally recognized as referring to the article's topic as opposed to some other subject), or
- Describe the topic specifically enough that there is no confusion.
This event is so recent I am not sure there is any particular name that has firmly stuck to it. And, regardless, I don't know that it can really be said that the average person knowledgeable about events in Texas City would recognize this title as uniquely referring to the 2005 event as opposed to the 1947 event or event the 2009 event. Even the term "Texas City refinery", though most commonly used to refer to the BP refinery can be used with others.
I would propose amending the title to specifically include the year in order to disambiguate it.
--Mcorazao (talk) 20:38, 17 May 2010 (UTC)
- P.S. I know people will say, "why not then change the title for Texas City Disaster?" The title of that article is widely recognized as the name for that historical event. Most people knowledgeable about the city's history would assume the 1947 event is what is being referred to. --Mcorazao (talk) 20:38, 17 May 2010 (UTC)
Subsequent incidents
[edit]On the first paragraph of "Subsequent incidents" where it is mentioned that: "... a contractor had accidentally switched a carbon steel pipe elbow with a low alloy steel elbow..." should not it be the otherway around, which is "a low alloy steel elbow had been accidentally replaced by a carbon steel one"? The thing is low alloy steels are used for example in vapor power plants main steam lines where temperatures are easilly higher than 500ºC and pressure is easilly higher than 300 bar. So, this means we are on the presence of High Temperature Hydrogen Attack characteristics:
- the presence of high quantities of hydrogen (water steam);
- high temperatures;
- and high pressures.
contractor's pick up truck left running vs. did not start seems contradictory
[edit]In the upper section it says the explosion was ignited by a contractor's pickup truck as the engine was left running. Farther down it says he had to crank the engine several times and at first the truck would not start. Now was the engine running or was it off? — Preceding unsigned comment added by 71.224.238.107 (talk) 19:23, 11 February 2012 (UTC)
Changes to 'Explosion' Section
[edit]This Texas City Refinery article does not do justice to the excellent narrative detailed in the CBS investigation report (REPORT NO. 2005-04-I-TX) of 2007. It does not describe in any detail the conflicts and the mistakes made during the 23rd, March 2005 and as a reference it is inadequate. Compare with the timeline narrative as detailed in Piper Alpha and you can see that one of the most infamous accidents in U.S. history has been poorly served to date. I feel there is too much focus on detail (car engine discussions etc) when the main narrative is incomplete and needs much more work. I can update the 'Explosion' section but I would need to delete the existing text, not sure if you all are OK with this. — Preceding unsigned comment added by Blackrock36 (talk • contribs) 08:44, 22 April 2013 (UTC)
Two small suggestions
[edit]Hello to whomever is watching this talk page. I have several minor updates I would like to suggest for this article. Before I detail the requests, I would like to point out that I am an employee of BP and am asking for these changes on behalf of the company as part of my job. If any editors here have been involved in discussion on the main BP article's talk page, then you have likely seen me there.
Now, here are the updates I suggest for this article. Both of the following suggestions are for the introduction of the article.
- I see that the end of the introduction has recently been updated to show that the Texas City Refinery was sold, the source supporting this currently is a press release on the BP website. I would like to suggest this Houston Business Journal article instead, as it is an independent source.
Done
- Additionally, the production figures in the second sentence of the introduction are from 2000. The same Biz Journal source could be used to update the introduction to show the current production numbers.
Done
Please let me know if you have any questions. Again these are just suggestions. Thanks. Arturo at BP (talk) 20:14, 10 May 2013 (UTC)
- Thanks Blackrock36 for adding the reference above into the article's introduction. The first part of this request is now complete. Would anyone be able to update production figures in the introduction with the new information from the added source? The information is in the Houston Business Journal article, which notes that the production as of February 2013 is 475,000 barrels per day. Thanks. Arturo at BP (talk) 17:55, 15 May 2013 (UTC)
- Re. production capacity, I have used and referenced Energy Information Administration data from January 2005. JudeFawley (talk) 05:16, 22 January 2024 (UTC)
Youtube Video
[edit]Was on youtube today and came across this video about the incident, made by the U.S. Chemical Safety and Hazard Investigation Board. https://www.youtube.com/watch?v=goSEyGNfiPM Now my basic understanding is that such a video may be in public domain in the united states? Could be it be added to the article? Macktheknifeau (talk) 09:03, 26 June 2021 (UTC)
Variances from the 2020 CSB video
[edit]Having read the page and watched the video, I'm puzzled by the discrepancies between the two.
One of the more glaring differences relates to the pickup truck that is believed to have triggered the actual explosion. The video describes this as having been parked with two workers inside it (with engine idling) and notes that those workers attempted to stop the racing engine, but the page text instead has the pejorative words "A diesel pick-up truck, with its engine left idling, had been carelessly parked..." and says that nearby workers attempted to stop the racing engine. I've looked in the CSB report (which is cited as the basis for this particular paragraph) and it makes no mention of "carelessly parked", nor of any attempts to stop the engine by those in it or nearby.
There are several other differences that I'm not going to attempt to list here. Questions for anyone familiar with the incident and/or this page would include: is the CSB video regarded as definitive? is the CSB report regarded as definitive? why does this page contain at least one pejorative statement which doesn't seem to be present in the cited source? Smudgeface (talk) 20:29, 30 October 2022 (UTC)
GA Review
[edit]The following discussion is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.
GA toolbox |
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Reviewing |
- This review is transcluded from Talk:Texas City refinery explosion/GA1. The edit link for this section can be used to add comments to the review.
Nominator: JudeFawley (talk · contribs) 16:02, 29 February 2024 (UTC)
Reviewer: Elli (talk · contribs) 17:37, 4 April 2024 (UTC)
Initial comments
[edit]I'll take a look at this one. Should have a full review within a week. Elli (talk | contribs) 17:37, 4 April 2024 (UTC)
Background
[edit]The refinery
[edit]After Pan American merged with Standard Oil of Indiana, ownership passed to Amoco.[2]
This is worded a bit confusingly, maybe go with "Pan American merged with Standard Oil of Indiana in 1954 to form Amoco" or something similar.but BP were extremely successful in turning the tide
shouldn't this be "BP was"?At the time of the merger, the plant was losing money
given that the previous paragraph mentions multiple mergers, maybe do "At the time of the 1999 merger"
Safety and maintenance record
[edit]It emerged after the accident that the plant had been poorly maintained for several years.[10]
given what else is written in this section, it seems like this was known at the time as well.- I'd spend a paragraph or two going over past incidents in more detail than is done here. Another on the cutbacks on spending and their results. Then maybe two more on audits. Currently there's way too many small paragraphs and this section feels disjointed (for a start, merge paragraphs 3 and 4).
The ISOM plant
[edit]Disposal of hydrocarbon vapors and small amounts of associated liquids from vent and relief during plant upsets or planned shutdowns was to vessel F-20, a blowdown stack.
would reword -- maybe like "Excess hydrocarbon vapors and liquids were sent to vessel F-20, a blowdown stack."
Unit turnarounds and use of portable buildings
[edit]Construction, turnaround, and routine activities at the refinery often required the installation of trailers and portable buildings for use as offices, workshops, etc. for the use of employees and contract workers.
would go with something more like "Portable buildings and trailers were often installed for use as offices during construction and maintenance."established the agreed layout of trailers
"agreed" with who?actions arising from the double-wide trailer MOC were still open
clarify what this means?
Will have more comments for the rest of the article soon. Elli (talk | contribs) 18:32, 11 April 2024 (UTC)
- Thanks a lot @Elli, these seem to-the-point comments and I think I will implement all of them as suggested. However, I will wait for the end of your review before taking action, so I can tackle all in one go. Your support is greatly appreciated :-) --JudeFawley (talk) 08:58, 15 April 2024 (UTC)
- Sounds good. Sorry about the delay with the rest of the review. Working on it now. Elli (talk | contribs) 02:56, 20 April 2024 (UTC)
Circumstances of the accident
[edit]- With the first paragraph... is this general procedural info? If so, probably belongs somewhere else, and if not, probably should include details on when this was happening.
- Second paragraph also seems kinda out of place.
Early morning
[edit]this transmitter, which was relied upon during the whole start-up operation, was not calibrated and its readings were not reliable
this is talking about the indicator that would be read to see if it's 99%, right? should be clarifiedAn independent level alarm triggered by a high-level switch should also have sounded at 7.9 feet (2.4 m) but failed to.
is there a reason why this failed?- When did the start-up process start and when was the alarm sounded and ignored? Would be nice to know if this happened before or after 5am.
One of the two day-shift supervisors ("A") arrived late for work at the central control room and did not have a handover with the night shift.
when were they supposed to arrive and when did they arrive?(Immediately after the BP-Amoco merger, the decision was taken to eliminate a second board operator position).
this might be better to include as a footnote.
Late morning
[edit]- Maybe rephrase
The required temperature for the tower reboiler return flow was 135 °C (275 °F) at 10 °C (18 °F) per hour but the procedure was not followed. During this start-up, this return flow temperature reached 153 °C (307 °F) with a rate increase of 23 °C (41 °F) per hour.
slightly:The required temperature for the tower reboiler return flow was 135 °C (275 °F) with a rate increase of 10 °C (18 °F) per hour, but this procedure was not followed: during start-up, the return flow temperature reached 153 °C (307 °F) at a rate of 23 °C (41 °F) per hour.
The erroneous 93% reading from the defective level transmitter
the article only previously mentions the reading was "less than 100%", so this phrasing is a bit confusing. Also I'm maybe just missing something but if 93% would only be ~9 feet, then wouldn't 67 feet be way over 100%? The details of how this reading works could be clarified.
Explosion
[edit]Meanwhile, at 12:00 pm contractors had left the trailers for a lunch organized to celebrate one month without lost-time injury. They were back by 1:00 pm.[52]
this is ironic/amusing but not sure it's relevant in this location. Might be better somewhere else? Maybe in the second-to-last paragraph of this section.level control valve was finally opened
why?by the subsequent fire that followed the violent explosion
"subsequent" is redundant here.
Emergency response
[edit]- Maybe worth mentioning the primary fire department that responded here?
Investigation reports
[edit]- Mogford report looks good.
- Guessing the Stanley report wasn't available publicly? If so the section looks fine.
- "BP Group" is inconsistently capitalized.
of the date of publication of the report none had actually been sacked.
any updates on this?The director of the Cherry Point refinery was promoted to oversee better implementation of process safety at BP.
has a cn tag and no source.- Maybe better to summarize Merritt's quote? That's quite long.
Process Safety Management or PSM
using a parenthetical here would be consistent with the rest of the articlethe Contra Costa County, California own local regulator
this isn't clear/proper grammar
Aftermath
[edit]- Paragraphs 2-4 here should probably be in their own subsection (para 1 appears to be mostly summarizing the settlements, prosecution, and fines, while 2-4 aren't really summarizing anything else).
In other congressional hearings dedicated to subsequent BP accidents in the U.S., the Texas City case history was consistently presented within the pattern of degraded safety culture at BP.
a secondary source would be ideal for this but not necessary.- The Eva Rowe section could be written a bit clearer ("she let it be known" isn't great wording), and also a source other than from a law firm for the settlement would be good.
By August 2008 only one of the approximately 4,000 claims remained open.
presumably this was eventually settled, right?
Impact on process safety
[edit]stepped up their game
is not really encyclopedic tone
TV documentaries
[edit]Looks good.
See also
[edit]- Deepwater Horizon oil spill is already linked in the article.
References
[edit]Noting that while I did spot-check a few references, I did not do an in-depth source check as this article is quite long. A few general notes:
- It's not great to have >3 citations for a statement unless necessary. Being more specific about what supports what makes verification easier.
- Generally preferable to keep things in order (e.g. [1][2][3], not [2][1][3]).
- The citation style isn't totally consistent here but that isn't a requirement for GA.
Lead
[edit]- Maybe also mention cost of settlements?
- Should probably say "relief valve" instead of "overpressure protection".
- Would suggest summarizing the "Aftermath" and "Impact on process safety sections" outside of just the first paragraph.
Images
[edit]- Suggest linking the CEO names in the collage image.
- Licenses look good.
General comments
[edit]Sorry for how long this review took. In general I think you've done a lot of good work here, and this isn't too far off from being a GA. Putting this on hold for now to allow you to address everything; please let me know if you have any questions/concerns. Elli (talk | contribs) 23:13, 20 April 2024 (UTC)
- Thank you so much @Elli. I have starter implementing the comments. I will do this by batches. In the meantime, I am compiling all answers to your comments. You can check out the work in progress in my sandbox: User:JudeFawley/sandbox - Wikipedia
- I will message you again when I am finished. --- JudeFawley (talk) 03:00, 21 April 2024 (UTC)
- Hi @Elli. I have finished, here are my countercomments. Kindly let me know if all is in order or further action is required.
- ===Background===
- ====The refinery====
After Pan American merged with Standard Oil of Indiana, ownership passed to Amoco.[2]
This is worded a bit confusingly, maybe go with "Pan American merged with Standard Oil of Indiana in 1954 to form Amoco" or something similar.Done. Added new inline citation to fully support this statement, as it was not 100% clear from the previous source.
but BP were extremely successful in turning the tide
shouldn't this be "BP was"?Done.
At the time of the merger, the plant was losing money
given that the previous paragraph mentions multiple mergers, maybe do "At the time of the 1999 merger"Done.
- ====Safety and maintenance record====
It emerged after the accident that the plant had been poorly maintained for several years.[10]
given what else is written in this section, it seems like this was known at the time as well.Done. The idea is that poor plant conditions were made public after the accident, although they were known inside BP well before it. For clarity, I changed to the simpler
The plant had been poorly maintained for several years
.
- I'd spend a paragraph or two going over past incidents in more detail than is done here. Another on the cutbacks on spending and their results. Then maybe two more on audits. Currently there's way too many small paragraphs and this section feels disjointed (for a start, merge paragraphs 3 and 4).
- I have merged paragraphs 3 and 4. Also, the section now starts with past accidents, then shifts to maintenance expenditure cuts and finally touches on the audits.
- Regarding previous accidents, I have added a significant event occurred in 1979 and expanded on the 23 fatalities occurred.
- There is now only one paragraph aggregating all audits, plus a final paragraph on the diffusion the audit results among BP higher management.
- ====The ISOM plant====
Disposal of hydrocarbon vapors and small amounts of associated liquids from vent and relief during plant upsets or planned shutdowns was to vessel F-20, a blowdown stack.
would reword -- maybe like "Excess hydrocarbon vapors and liquids were sent to vessel F-20, a blowdown stack."- Changed it to
Excess hydrocarbon vapors and liquids from vent and relief were sent to vessel F-20, a blowdown stack
. I think it is important to leave the "vent and relief" to give context (for example, drained liquids did not go to the blowdown stack).
- Changed it to
- ====Unit turnarounds and use of portable buildings====
Construction, turnaround, and routine activities at the refinery often required the installation of trailers and portable buildings for use as offices, workshops, etc. for the use of employees and contract workers.
would go with something more like "Portable buildings and trailers were often installed for use as offices during construction and maintenance."Done.
established the agreed layout of trailers
"agreed" with who?- Basically "internally agreed", as in, among different departments and vouchsafed by risk assessment. I have changed it to
established an acceptable layout of trailers
, I hope it is more clear.
- Basically "internally agreed", as in, among different departments and vouchsafed by risk assessment. I have changed it to
actions arising from the double-wide trailer MOC were still open
clarify what this means?- I have changed it to
recommendations issued in the analysis of the change involving the placement of the double-wide trailer were still open
. I hope this clarifies.
- I have changed it to
-
- ===Circumstances of the accident===
- With the first paragraph... is this general procedural info? If so, probably belongs somewhere else, and if not, probably should include details on when this was happening.
- It is procedural. The pre-start-up safety review should have happened before the start-up commenced, but it did not. This is one of the findings of the investigations and as such has been highlighted also somewhere else in the article. I have therefore shortened the text and included it at the beginning of the following section /* Early Morning */ :
Because plant start-ups are especially prone to unexpected situations, operational practice requires the application of a controlled and approved pre-start-up safety review (PSSR) procedure. BP had one, but it was not adopted in this case.
- It is procedural. The pre-start-up safety review should have happened before the start-up commenced, but it did not. This is one of the findings of the investigations and as such has been highlighted also somewhere else in the article. I have therefore shortened the text and included it at the beginning of the following section /* Early Morning */ :
- Second paragraph also seems kinda out of place.
- It contained information that, having transpired after the investigations, is repeated elsewhere in the article. Indeed, I think the paragraph was redundant, so I deleted it.
- With the first paragraph... is this general procedural info? If so, probably belongs somewhere else, and if not, probably should include details on when this was happening.
- ====Early morning====
this transmitter, which was relied upon during the whole start-up operation, was not calibrated and its readings were not reliable
this is talking about the indicator that would be read to see if it's 99%, right? should be clarified.- It is indeed that transmitter. I have reworded
The process control level transmitter was designed to indicate the raffinate level within a 5-foot (1.5 m) span from the bottom of the splitter tower to a 9-foot (2.7 m) level. A high-level alarm dependent on this transmitter sounded as intended when a level of 7.6 feet (2.3 m) from the bottom was reached. However, during start-up it was common to ignore this alarm and fill up to a level of 99% (as indicated by the transmitter) to prevent damage to the furnace heating the splitter bottom. Unbeknown to the operators, the process control level transmitter, which was used to monitor the level in the splitter during the whole start-up operation, was not calibrated and its readings were not reliable.
- It is indeed that transmitter. I have reworded
An independent level alarm triggered by a high-level switch should also have sounded at 7.9 feet (2.4 m) but failed to.
is there a reason why this failed?- The proximate cause is unknown (I have just double-checked the investigation report to make sure I had not missed any info here). Instrument failures do happen and should be prevented or timely diagnosed by periodic maintenance/inspection/function test/calibration. These were not carried out, which is the real problem in the context of this accident and the widespread lack of safety oversight at the refinery. Lack of maintenance oversight on safety critical systems is highlighted elsewhere in the article (investigation reports and lessons learned in process safety).
- When did the start-up process start and when was the alarm sounded and ignored? Would be nice to know if this happened before or after 5am.
- At 3:09 am. I have added it in the text (and cited the page in the CSB report that supports this).
One of the two day-shift supervisors ("A") arrived late for work at the central control room and did not have a handover with the night shift.
when were they supposed to arrive and when did they arrive?- Changed to
At 7:15 am, more than one our late on the commencement of his shift (6:00 am), one of the two day-shift supervisors ("A") arrived at the central control room. Because of his lateness, he could not go through the required handover with the night shift.
- Changed to
(Immediately after the BP-Amoco merger, the decision was taken to eliminate a second board operator position).
this might be better to include as a footnote.Done (although slightly changed to
The need for two operators, especially for dealing with potential plant upsets, had been highlighted in several reports since before the Amoco–BP merger.
, a bit more nuanced and consistent with the source supporting the statement).
- ====Late morning====
- Maybe rephrase
The required temperature for the tower reboiler return flow was 135 °C (275 °F) at 10 °C (18 °F) per hour but the procedure was not followed. During this start-up, this return flow temperature reached 153 °C (307 °F) with a rate increase of 23 °C (41 °F) per hour.
slightly:The required temperature for the tower reboiler return flow was 135 °C (275 °F) with a rate increase of 10 °C (18 °F) per hour, but this procedure was not followed: during start-up, the return flow temperature reached 153 °C (307 °F) at a rate of 23 °C (41 °F) per hour.
Done
The erroneous 93% reading from the defective level transmitter
the article only previously mentions the reading was "less than 100%", so this phrasing is a bit confusing. Also I'm maybe just missing something but if 93% would only be ~9 feet, then wouldn't 67 feet be way over 100%? The details of how this reading works could be clarified.- The level transmitter, by definition, could only read up to 100% of its range, which was from 5 feet (0%) to 9 feet (100%), as stated in the /* Early morning */ section. Anything above 9 feet would have read as 100% (i.e. 9 feet), regardless of how much liquid there actually was in the column (basically, under no circumstances should the liquid have been above the 9 feet mark; that is why by design there was no way of measuring levels above 9 feet: should you be above 9 feet, just make sure to empty the tower until you are safely below 9 feet). However, as stated in the /* Early morning */ section, this transmitter had not been calibrated and its readings were not reliable; this is why it never reached 100%. Because of this, and the concurrent failure of the redundant level switch (which should have sounded an alarm at 99% of the same 9 feet range), the operator thought there was liquid only at the bottom of the column, while in fact the whole column was becoming flooded. I have changed the wording as follows:
The defective level transmitter still erroneously indicated an ongoing safe level condition in the tower. However, there was still no flow of heavy raffinate from the splitter tower to the storage tank as the level control valve remained closed; instead of the hydrocarbon liquid level being at 8.65 feet (2.64 m), i.e. 93% of the instrument range, as indicated, it had actually reached 67 feet (20 m).
I hope it is clearer.
- The level transmitter, by definition, could only read up to 100% of its range, which was from 5 feet (0%) to 9 feet (100%), as stated in the /* Early morning */ section. Anything above 9 feet would have read as 100% (i.e. 9 feet), regardless of how much liquid there actually was in the column (basically, under no circumstances should the liquid have been above the 9 feet mark; that is why by design there was no way of measuring levels above 9 feet: should you be above 9 feet, just make sure to empty the tower until you are safely below 9 feet). However, as stated in the /* Early morning */ section, this transmitter had not been calibrated and its readings were not reliable; this is why it never reached 100%. Because of this, and the concurrent failure of the redundant level switch (which should have sounded an alarm at 99% of the same 9 feet range), the operator thought there was liquid only at the bottom of the column, while in fact the whole column was becoming flooded. I have changed the wording as follows:
- Maybe rephrase
- ====Explosion====
Meanwhile, at 12:00 pm contractors had left the trailers for a lunch organized to celebrate one month without lost-time injury. They were back by 1:00 pm.[52]
this is ironic/amusing but not sure it's relevant in this location. Might be better somewhere else? Maybe in the second-to-last paragraph of this section.DoneI have moved it to an explanatory footnote appended towards the end of this section.
level control valve was finally opened
why?- The CSB report is not conclusive not very clear on this. The operator was under the impression that there was in fact flow out of the tower, because the flow transmitter was giving him a reading of about 4300 bpd. In other words, he thought the level control valve was open, although at a low opening range of perhaps a few percent of its capacity, when in fact it was fully closed and the actual flowrate was 0 bpd. This is mentioned in the /* Early morning */ section. My interpretation is that at some point before 12:42 the operator must have thought that the outflow had to be increased from what he thought was about 4300 bpd to a higher output, perhaps because he was seeing the level increasing from, say 93% to close to 99% (although obviously we know that the level transmitter data were completely wrong; but the operator believed them). Bear in mind that this is my interpretation, likely to be correct but not actually spelled out in the investigation report. Because of this, I am reluctant to change the text because it would basically amount to original research.
by the subsequent fire that followed the violent explosion
"subsequent" is redundant here.Done, deleted "subsequent".
- ====Emergency response====
- Maybe worth mentioning the primary fire department that responded here?
- From all the sources I have found, it was a mutual aid service set up by the chemical and refining plants of Texas City. I have spelled out the name of this mutual aid (IMAS) in the text now.
- Maybe worth mentioning the primary fire department that responded here?
- ===Investigation reports===
- Mogford report looks good.
- Noted
- Guessing the Stanley report wasn't available publicly? If so the section looks fine.
- Indeed I could not find it anywhere... but now I accidentally stumbled upon a copy! See here: https://web.archive.org/web/20081207143706/http://images.chron.com/content/chronicle/special/05/blast/stanleyreport.pdf. I have added a citation to this document. I have also reviewed it and expanded (although not extensively) the Stanley report section.
- "BP Group" is inconsistently capitalized.
Done
of the date of publication of the report none had actually been sacked.
any updates on this?- None that I can find, except for Parus (for whom see explanatory note appended to the sentence you quote). However, I think the main point here is to highlight that two years after the facts BP had not yet taken action against these high profile executives. I think the sentence can stand as it is.
The director of the Cherry Point refinery was promoted to oversee better implementation of process safety at BP.
has a cn tag and no source.- Yes, that statement predates my article re-hauling. I cannot find a source for this. Since this statement reflects an action taken by BP after the report was issued, and not any content of the Baker report itself, I have deleted the statement altogether.
- Maybe better to summarize Merritt's quote? That's quite long.
Done
Process Safety Management or PSM
using a parenthetical here would be consistent with the rest of the articleDone
the Contra Costa County, California own local regulator
this isn't clear/proper grammar- Changed to
Contra Costa County, California hazardous materials programs
(see www.cchealth.org/health-and-safety-information/hazardous-materials). I believe "<county>, <state> <thing>" is correct grammar to indicate a thing from a certain county in a certain state, or am I wrong?
- Changed to
- Mogford report looks good.
- ===Aftermath===
- Paragraphs 2-4 here should probably be in their own subsection (para 1 appears to be mostly summarizing the settlements, prosecution, and fines, while 2-4 aren't really summarizing anything else).
Done Paragraphs 2-4 are now in own subsection titles "BP's response and fate of the refinery"
In other congressional hearings dedicated to subsequent BP accidents in the U.S., the Texas City case history was consistently presented within the pattern of degraded safety culture at BP.
a secondary source would be ideal for this but not necessary.- It is a fair point, but I cannot find a source that lists all the hearings in one place. I would be inclined to leave this untouched.
- The Eva Rowe section could be written a bit clearer ("she let it be known" isn't great wording), and also a source other than from a law firm for the settlement would be good.
Done ("she said" and source from Houston Chronicle used).
By August 2008 only one of the approximately 4,000 claims remained open.
presumably this was eventually settled, right?- I am sure it was, because not settling would have meant a criminal trial, of which there was none (this is not about the public criminal prosecution for violation of the Clean Air Act). However, I really cannot find sources about this last settlement. I will leave the sentence as is for the moment, but if you have any suggestions to improve it please let me know.
- Paragraphs 2-4 here should probably be in their own subsection (para 1 appears to be mostly summarizing the settlements, prosecution, and fines, while 2-4 aren't really summarizing anything else).
- ===Impact on process safety===
stepped up their game
is not really encyclopedic toneDone Changed to
took action
- ===TV documentaries===
-
- Looks good.
- Noted.
- Looks good.
- ===See also===
- Deepwater Horizon oil spill is already linked in the article.
- Deleted. Added two links to other U.S. refinery fires instead.
- Deepwater Horizon oil spill is already linked in the article.
- ===References===
- Noting that while I did spot-check a few references, I did not do an in-depth source check as this article is quite long. A few general notes:
- It's not great to have >3 citations for a statement unless necessary. Being more specific about what supports what makes verification easier.
- There are XYZ such instances
- One at the end of the second paragraph of /* Investigation reports */. Here one reference is to a secondary source, the rest are just callbacks to the investigation reports in their entirety. The citations of the investigations reports here is probably redundant so I have deleted them. Only one citation is left.
- At the end of the first paragraph of section /* CSB report */. Yes, too many, I have deleted one.
- In the last paragraph of the new section /* BP's response and fate of the refinery */. This is just citations to the reports individual of the congressional hearings mentioned in the sentence to which the citation is appended
In other congressional hearings dedicated to subsequent BP accidents in the U.S., the Texas City case history was consistently presented within the pattern of degraded safety culture at BP.
This sentence is the subject of one of your comments above. I did try to find a secondary source here but could not, so I think having citations of the primary sources to which the sentence alludes is the lesser evil. - At the end of the first paragraph of section /* Impact on process safety */:
The disaster had a notable impact in the domain of process safety. Texas City has become a classic case history used to explain failings in both management and technical barriers in process plants.
These citations are to book chapters where Texas City is presented as a case history. I think having several citations here is useful, because they do not just support the statement they are appended to, but give a callback to important process safety books where Texas City is discussed in specific chapters or sections.
- There are XYZ such instances
- Generally preferable to keep things in order (e.g. [1][2][3], not [2][1][3]).
- I think I have read in a help page (obviously I can't find it now...) that this is not really necessary. Additionally, using (mostly) the visual editor like I do does not allow for this as the numbering changes between the visual editing interface and the "final product". However, I think I have managed to do it now, have a look at last version.
- The citation style isn't totally consistent here but that isn't a requirement for GA.
- Noted. Actually I typically strive to have a consistent style. For my own education, what inconsistencies have you spotted?
- It's not great to have >3 citations for a statement unless necessary. Being more specific about what supports what makes verification easier.
- ===Lead===
- Maybe also mention cost of settlements?
Done
- Should probably say "relief valve" instead of "overpressure protection".
Done
- Would suggest summarizing the "Aftermath" and "Impact on process safety sections" outside of just the first paragraph.
Done Added one more paragraph:
The accident had widespread consequences on both the company and the industry as a whole. The explosion was the first in a series of accidents (which culminated in the Deepwater Horizon oil spill) that seriously tarnished BP's reputation, especially in the U.S. The refinery was eventually sold as a result, together with other North American assets. In the meantime, the industry took action both through the issuance of new or updated standards and more radical regulatory oversight of refinery activities.
I hope this is good.
- Maybe also mention cost of settlements?
- ===Images===
- Suggest linking the CEO names in the collage image.
Done
- Licenses look good.
- Noted
- Suggest linking the CEO names in the collage image.
- JudeFawley (talk) 08:22, 22 April 2024 (UTC)
- @JudeFawley: this looks pretty good! Just an FYI for good article nominations, you can reply directly to the reviewer's comments; you don't need to copy them to a separate section. Passing the article.
- As for the citation style, you use sfn's for some (e.g.
CSB (2007), p. 17.
) and full cites for others (e.g.Broadribb, Michael P. (December 2006). "Lessons from Texas City: A Case History" (PDF). Loss Prevention Bulletin. No. 192. Institution of Chemical Engineers (IChemE). pp. 3–12. ISSN 0260-9576. Archived (PDF) from the original on January 22, 2024. Retrieved January 22, 2024.
). This can be hard to balance as using sfn's for sources only cited once is also kinda messy, hence why I don't think it's a huge deal in this article where you cite a lot of sources only once or twice. But it can be done (for example Capri-Sun does cites like that, including for sources only cited once). Elli (talk | contribs) 19:40, 22 April 2024 (UTC)
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