Document pmbR7MnRrz907xKbZEMMrYVvD

Mr. /. BiiLjewia ar. ii. X. ball Continental Oil Company Arteeia, New Mexico New York Tulsa . It:cember 13, 19-41 -AIRMAIL Dear O sc&n Referring to our letter of December 12 we are attaching hereto a copy of a report from Sr* C. E. Lenington discussing circumstances surround ing the cleaning of biending tank #15, Continental Oil Company, Artesia, be;? a-exieo. *111 report further regarding developments at this point. At the present writing three of the 'lever- man are hospilaiirec arc Dr. ichradin is e>;pacted to arrive in A-uariiio momentarily. It is hoped that he will arrive in Artesia not later than Thursday. His delay in arriving, of course, had been because of incler-ent weather conditions in the midwest which have maue plane travel impossible, Yours very truly, HXB/har Attach. cc: Dr* K. A. Kehoe - AIRMAIL 4^E 0021479 Amarillo, Texas December 12, 19UU Mr. ij. W. Shank F.e; Continental Oil Co. Tank Cleaning Artesia, b.M. Dear Mr. Shank: I was notified that the above company was to clean a tank starting November the 27th. Then I[arrived the tank had been steamed for some time and the pits partially dug. Since a contractor was to do the work he was not properly prepared for the job. Additional clothing and rubber gloves were necessary so these were purchased locally. Two blower nose masks were available. It was decided that the following day the work on cleaning tne tank would start. The following day three men were designated to enter the tank. These men were hesi tant to do this work but the contractor assured the men that they would encounter no trouble as he had entered several tanks when he worked with the Continental and was at one time an examined blender. The men were properly clothed with white coveralls, boots, rubber gloves, leather gloves, white caps and underwear if they wanted it. Two men wore mask faces attached to one blower and one man close to the manhead used the other blower and face piece. It was decided that since this tank did not have a water draw that two men would push the sludge to one man at the manhead and he in turn would shovel it out of the manhead into a shoot which emptied into the pit. A non-sparking shovel was used and attached to each man was a rope safety line. The man attending to the shoot wore a canister mask at first and later discarded it as the wind was from a westerly di rection which made the wind blow away from the manhead and both blowers outside the tank. One man with the Continental Oil Co. acted for them and also attended to the safety lines. A complete change of clothing was made the following cayl At noon all men ate in town which necessitated the tank cleaners, to take a bath at noon and then dressing in their day clothes. Wnen returning eacn man dressed in the clothes he used when, he left the job. At night each man took a shower before re- turning to his every day clothes. Ail of- the equipment used during the day was washe with kerosene at a drain close to the treating plant and rinsed with water. This prc cedure was followed the following day when entering ana cleaning up. To make sure tt all sludge was removed a dump truck of used Fuller Earth was made available for dryir the inside of the tank when all the loose sludge was removed. This was the last of the job and when it was placed in the shoot the final part of the Fullers Earth was dry. ' .... The tank cleaners at the end of the job came out and told us that all sludge wa6 re moved, tills was sludge and Fullers Earth, but when we looked inside the tank we no ticed that some water was still standing at the manhead. The men threw in more driei and when this was completed we caiied the job complete. An attempt was made to use a light to look inside the tank late at night but this was unsatisfactory since only a small beam was available. The last cleaning was done with a broom as the tank sloped towards the manhead. . 0021460 The reason for the cleaning of tis tank was to determine the condition of the bottom. At the time the job was finished they still had not decided as to how t would do their repair work. However, Mr. Gillespie told me that he liked the ide of pouring a 3" concrete layer over the old bottom. I told Mr. Gillespie that t tank was being cleaned with that in mind and told him very emphatically that the tank as being cieaned was not fit for hot work repairs. I told him that if they decided to replace the bottom with metal the tank would have to be sandblasted around the side where weiding would be done. This went also for th bottom. I told that this tank leaked and that the water bottom was raised periodically. I mentioned also that if hot work was to be done that something would have to be do with the earth beneatn the bottom as it could contain gasoline. Mr. Gillespie t me that only water was there if anything. However, he did ask how gasoline coul be removed from the bottom and I told him that most companies steamed this area for some time before doing any welding inside. By bottom mentioned above I mean that beneath the metal tank bottom. It was necessary that I leave as soon as possible since. I had another tank clean ing waiting at Deming, N.M. I suggested when this tank cleaning started that it would hurry the job if a door sheet was removed but this was never discussed sin was told that they did not know how the bottom was to be repaired and that it wo entail additional expense if a concrete bottom was poured. Mr. Gillespie said t concrete could be poured through the manhead just as well through a door sheet. When I left Wednesday evening I called Mr. Gillespie and told him that the tank was finished and that if they were to do hot work another notification would be necessary. However, if concrete was to be used I saw no reason why they could n pour when the tank had been steamed. When I left that night the night operator turned steam into the tank. Apparently the tank was dry because Mr. Gillespie told me this week that when the chemist entered -the tank before pouring the con crete, only about a barrel of water condensate from the steam was noticed. Mr. Walter Nugent, tank contractor, mentioned to me that he intended to cut the fire wail so that gravel and sand could be placed, near a concrete mixer near the tank. He stated that he would use a shoot to manhead and then the men inside th tank would have to carry it from there to other parts of the tank. As i mention before this was the only opening on this tank other than the fill lines which ha been blind flanged. This tank did not have a top hatch so the only place of ent was through the manhead. As far as the tank cleaning was concerned all safety precautions were used and t men were in good physical condition at the end of the cleaning. I feel certain if they carried out my recommendations no lead hazards would be involved. C. S. LE.INGTON Kg 0021481