Russian nuclear submarines will be built using new technology

Russian nuclear submarines will begin to build according to a new method. According to the press service of "Sevmash", the company is introducing a block-modular technology for building nuclear submarines.

The technology being introduced involves the assembly of submarines from large blocks loaded with equipment. The block-modular method is to replace the modular-modular method used at Sevmash, which was introduced during the construction of the third generation nuclear-powered ships. Using this technology, ready-made, but not yet tested, block sections of the future submarine arrive at the slipway, where blocks are formed from them. After that, the formed block passes the stage of hydraulic tests and the sections are again separated.

Modular-modular technology significantly lengthens the construction period of nuclear submarines in comparison with modular-block technology. The introduced method not only significantly reduces the construction time for nuclear submarines, but also makes it cheaper, since a significant amount of work is carried out in specialized workshops before the blocks are fed to the slipway for final assembly.

In 2016, under the leadership of General Director of Sevmash Mikhail Budnichenko, initiative studies of a new technology for the construction of nuclear submarines were started. A working group was created with the participation of submarine designers. Within the framework of the USC, a project was opened to create a block-modular method and the transition to the construction of new generation boats using this technology

- said the project manager, head of the PKB bureau, Alexander Spiridonov.

Currently, Sevmash is modernizing production facilities and infrastructure to introduce a new method of building nuclear submarines. Also, the new technology is being discussed in the relevant departments.

Comments

[7,62x54]

While the new technology is being discussed, it is necessary not to stop the construction of already announced submarines. Otherwise, the terms will creep away to the right again.

[Machito]

Quote: 7,62x54

While the new technology is being discussed, it is necessary not to stop the construction of already announced submarines. Otherwise, the terms will creep away to the right again.

If the new technology proves to be effective, the shift in the delivery dates to the right will be justified, because this technology is cheaper and faster.

[7,62x54]

While you are fantasizing, do not forget to remove the dry grass around the perimeter, otherwise something will blow up again.

[Eldorado]

Take care of yourself first, sir

[Bez 310]

Quote: 7,62x54

do not forget to remove dry grass around the perimeter

And finally stop throwing out cigarette butts!

[Lipchanin]

Quote: Bez 310

And finally stop throwing out cigarette butts!

Are you spoiled, you know.
There is no foreman on you

[tralflot1832]

At Sevmash, it’s tight around the perimeter, but it’s normal with reindeer lichen.

[hydrox]

How good that the lichen does not burn!

[tralflot1832]

But boletus grows very well on it!

[vVvAD]

Russian nuclear submarines will begin to build according to a new method. According to the press service of "Sevmash", the company is introducing a block-modular technology for building nuclear submarines.

Finally! Thanks to France with its "Mistrals" - and we got paid in addition!

[Boa kaa]

Quote: 7,62x54

While the new technology is being discussed, it is necessary not to stop the construction of already announced submarines. Otherwise, the terms will creep away to the right again.

Colleague, you have not read the article carefully.
Production does not stop. At the same time, a new production line is being prepared.

Currently at Sevmash production facilities and infrastructure are being modernized to introduce a new method of building nuclear submarines.

And the discussion is going on "in specialized departments", which can mean only one thing: the decision to switch to block-modular assembly has been made, so the subcontractors should rebuild their work for this new boat assembly technology.

[Alien From]

Good news. The main thing is not only in words.

[Eldorado]

God forbid!
The modernization of production at Sevmash is already underway. I think that starting from buildings 4-5, the factory workers will be able to build Yaseni-M in 3-4 years.

[mihail_mihail0620]

Quote: El Dorado

The modernization of production at Sevmash is already underway. I think that starting from buildings 4-5, the factory workers will be able to build Yaseni-M in 3-4 years.

In the USSR, at the Leninsky Komsomol shipyard, in Komsomolsk-on-Amur, they built nuclear submarines of project 971, of various modifications, in the 80s, one piece per year (what kind of technology was there?).
From 1980 to 1999, Sevmash built 35 boats of various projects, almost two boats a year. (including the giants of the nuclear submarine pr.941), then the same for some mysterious technology.
In the world practice of shipbuilding, block-modular technology has been used for a long time, the question arises, where was the modern management of Sevmash all this time?

[Eldorado]

the Americans are already building their Virginias using this method; it significantly accelerates the construction time of the order. It's time for us to catch up!

[Pavel57]

Designers should no longer submit blueprints to the boat, but blueprints for cubes.

[NEXUS]

This technology should have been introduced yesterday, before breakfast. The lag in terms of construction of submarines in comparison with mattresses is catastrophic.

[Ded_Mazay]

"Yesterday" is it in the "fun" 90s or in the "hangover" 2000s?
They could have implemented earlier, earlier.

[NEXUS]

Quote: Ded_Mazay

"Yesterday" is it in the "fun" 90s or in the "hangover" 2000s?
They could have implemented earlier, earlier.

This is when the rearmament of the army was just beginning ...

[Ded_Mazay]

Quote: NEXUS

They could have implemented earlier, earlier.

[Boris ⁣ Shaver]

Quote: Ded_Mazay

"Yesterday" is it in the "fun" 90s or in the "hangover" 2000s?

Today is so 2020. Where has the decade gone?

[Ded_Mazay]

Quote: Boris ⁣Razor

Where did the decade go?

On the Kudykin mountain.

[Boris ⁣ Shaver]

Quote: Ded_Mazay

On the Kudykin mountain.

I'm afraid there are more "stable phrases" here.

[hydrox]

So it flew away for deliberation: just our generation at this time was massively retiring, and from the exam, brains only grow moldy, but do not develop in any way.

[Boris ⁣ Shaver]

Quote: hydrox

from the exam, brains only grow moldy

People who graduated by 2010 entered in 2001-2006 (from bachelors to graduate students after graduate school). During these years, decent universities did not accept the USE yet.

[hydrox]

"People" that have been produced since the early 00's (and even more so in the 10's!) NOT engineers, NOT scientists, NOT a designer, but only managers in a shoe stall on the Haymarket!
Be ashamed to compare the pros (which ended by 00s and "sixes" which started in the 00s) ...
But in some areas of the Defense Industry (and the General Staff), the pros remained (you see, the process of transferring knowledge (educating personnel)) was with a "+" sign: only this progress did not affect combat shipbuilding.

[Boris ⁣ Shaver]

Quote: hydrox

"People" that have been produced since the early 00's (and even more so in the 10's!) NOT engineers, NOT scientists, NOT a designer

Quote: hydrox

"People" that have been produced since the early 00's (and even more so in the 10's!) NOT engineers, NOT scientists, NOT a designer, but only managers in a shoe stall on the Haymarket!

I remember one of my first potential employers. He threw me the same tantrum at the interview as you are here now. Then he began to show his Ph.D., which he writes (matured by the age of 60, specialist). I still remember his ridiculous passages: "Look! I have integrals here! See? Serious calculations! With integrals! Is that how someone writes now? There are no engineers today!" I then politely said goodbye, turned around and left without finishing my "interview." And only in the corridor he could not resist and whinnied loudly. I still talk, and I'm a little ashamed, because it seems to me that he heard my laugh then. It is not good to do so with a person who is diligently mastering, albeit in his old age, intergal calculus. But when an elderly head of a reputable organization, at the sight of a newly-made candidate of sciences from a respectable university, is trying with all his might to fluff his "tail" in front of him - this is an extremely pitiful sight and it is really difficult to stay here.
However, I was even grateful to him. I then clearly understood for myself that if I stayed to work "for my uncle", then it is possible that my boss one day will be just such a completely devoid of intelligence with a bunch of problems about this and uncontrollable envy towards those who use the brain properly ... Thanks to this understanding, after a couple of years I started developing my own business in my area of ​​expertise. And everything that I have today - I owe this to my work.

[The eye of the crying]

That is, the person with integrals was right - you did not become an engineer.

[Boris ⁣ Shaver]

Becoming and staying are two big differences

[Ded_Mazay]

Quote: Boris ⁣Razor

from bachelors to postgraduate students after master's degree

Postgraduate students become after graduate school, and the magistracy graduates masters (specialists who profuse an extra year on wiping their pants on a university bench).

[Boris ⁣ Shaver]

Quote: Ded_Mazay

Postgraduate students become after graduate school

Graduate students become в graduate school. AND after postgraduate studies become (though not all) candidates.

[Ded_Mazay]

A graduate student before passing the GIA is not a graduate student, but only a graduate student's larva ... Just like a candidate, before defending his Ph.D. thesis, he is only an applicant.

[mihail_mihail0620]

Quote: Ded_Mazay

"Yesterday" is in the "funny" 90s

In the "funny" 90s, in Russia, about 18 nuclear submarines of various projects were built, 2 per year, a dozen more were not completed.

[mihail_mihail0620]

For the person who gave me a minus.
1990: K-317 "Panther"
1991: K-461 "Wolf"
1992: K-328 "Leopard"
1993: K-154 "Tiger"
1994: K-157 "Vepr"
1999: K-335 "Cheetah"
1990: K-410 "Smolensk" • K-442 "Chelyabinsk"
1991: K-456 "Tver" ("Vilyuchinsk")
1992: K-226 "Eagle" ("Severodvinsk")
1993: K-186 "Omsk"
1994: K-141 "Kursk"
1996: K-150 "Tomsk"
1990: K-407 "Novomoskovsk"
1990 K-331 "Narwhal"
1992 K-419 "Walrus"
1995 K-295 "Dragon"
1990 K-534 "Catfish"
1993 B-336 "Okun"

[Boris ⁣ Shaver]

Quote: mihail_mihail0620

built about 18 nuclear submarines

Almost everything has not been built, but completed. It seems that you just lied a little, but you go on - a completely different picture turned out.
This movement in energy since the time of the Union. It is clear that such a colossus as the Soviet military-industrial complex, moving at full speed in the 80s, cannot be stopped at one moment - it took ebna and his company many years to finally stop it. We almost did it, I must admit.

[moscowp]

Oh hello. I haven’t been on the site for several years, and you all continue to write banal good-looking nonsense like “faster, higher, stronger”, “I should have had more yesterday!”

[Boris ⁣ Shaver]

Quote: moscowp

hello. Have not been on the site for several years

For what did he sit?

[moscowp]

God had mercy) just didn't go

[poquello]

Quote: moscowp

Oh hello. I haven’t been on the site for several years, and you all continue to write banal good-looking nonsense like “faster, higher, stronger”, “I should have had more yesterday!”

classics are eternal

[moscowp]

I was once in Rostov-on-Don. There I was taught the following: "there are large, small and medium crayfish, and so, the most delicious medium crayfish!" -)) since then in restaurants I order only average crayfish, if it happens)

[poquello]

Quote: moscowp

I was once in Rostov-on-Don. There I was taught the following: "there are large, small and medium crayfish, and so, the most delicious medium crayfish!" -)) since then in restaurants I order only average crayfish, if it happens)

lazy, shrimp in the store

[beeper]

Wasn't the Hitlerite submarines of the XXI project still built by the high-speed block method, when separate blocks-compartments were built at the designated subcontractor plants and were saturated with equipment to the maximum, and then they were delivered to the shipyard on special barges for general assembly ?!
On the Web and in declassified specialized literature, there are photos of these blocks-compartments and numerous submarines assembled from them at various stages of assembly, captured by the Allied troops!
Something I thought that after studying the trophy documentation, this progressive method was introduced in our country after the war during the construction of submarines 611 and 613 projects ?!

[2 Level Advisor]

yes no .. now, a considerable part of the equipment, even after launching, the submarines continue to equip .. therefore often it takes a long time before testing starts after launching

[Sergey Valov]

The principle itself is very old. The problem is how blocks / compartments / modules, no matter how they are called, are moved between the place of their manufacture and the final assembly pile. The dimensions and weights are very serious there. Something seems to me that again, as with the IL-76, people are being fooled.

[Boa kaa]

Quote: Sergey Valov

The principle itself is very old. The problem is how ...

The question is, of course, interesting ... (c) Aha
1. For world shipbuilding (USA, Korea, China, GMBN ...), the method ("path", not the principle - "first principle") of block-modular assembly is not new. But we in shipbuilding have just grown to it. The lag is 10-15 years in the technology of assembling units. As everyone remembers, we tested the technology of large-block assembly (compartments!) In St. Petersburg on the assembly of the Mistral aft compartments. The French "contributed", thanks to them for that.
2. About the problems. In addition to the in-plant (shipyard) logistics and transport system for large and heavy units (Sergei correctly drew attention to this!), You also need:
- rational placement of workshops "along" the movement of the compartment, which will be saturated in the course of its movement towards the slipway ...

since a significant amount of work is carried out in specialized workshops before feeding the blocks onto the stack for final assembly.

- welding (!) joining of compartments on the slipway. These are welding of high-strength hull ship-grade steel of the analogue HY-100 with a thickness of 48 mm. Titanium-containing steels are cooked in an inert atmosphere. So you need to create local - minimum! - conditions of an argon environment. Manual? - it is unlikely, a semiautomatic device or an automatic machine, most likely around the perimeter of the case with a diameter of 10-11m. And it will be cooler than boiling the pipes of Nord Stream-2!
- the accuracy of assembling the units "inside" the finished compartment, especially at the joints, must be within the tolerance of a millimeter ... two, as in the layout of the hulls of airliners! This makes special demands on the level of training (assemblers, assemblers) ...
- inter-compartment junctions of pipelines, cable, fiber-optic communication lines: the more connections, the more potential problems ...
-

the formed block goes through the stage hydraulic tests and sections disconnect again.

Does this mean that you need to cook again? or will it be: at the "stand", without joining in the "sausage" of all compartments?
To come to such a technology, it was necessary to grow technologically. It seems we have grown up. And this is good news.
But.

[Sergey Valov]

I did not know that the P.L. boiled in an inert environment. One can only guess about the problems, because we had to deal with a lot of welding of stainless steel with argon. I also saw a camera the size of a small cottage. As for the accuracy in aviation, then even one millimeter is unacceptable there.

[Beregovic_1]

Titanium-containing steels are cooked in an inert atmosphere. So you need

Okostya! boats of the 4th generation are built by electric arc welding and Bulgarian, as well as boats of the 3rd generation.

the accuracy of assembling the units "inside" the finished compartment, especially at the joints, must be within a millimeter tolerance ... two, as in the layout of the hulls of airliners! This makes special demands on the level of training (assemblers, assemblers) ...

Whinnying to tears)). At Sevmash, all built boats of the same project had different lengths. The difference is up to half a meter. One donkey from the Quality Department tried not to sign the act, as the boat turned out to be 20 cm longer. They sent him. There is a tolerance for docking and welding, the submarine hull generally consists of 10% welded seams.

So you need to create local - minimum! - conditions of an argon environment. Manual? - it is unlikely, a semiautomatic device or an automatic machine, most likely around the perimeter of the case with a diameter of 10-11m. And it will be cooler than boiling the pipes of Nord Stream-2!

docking of the body blocks is done manually, by electric arc welding. 15-20 highly qualified welders simultaneously start work around the perimeter and cook without interruption, so that the body does not take away when it cools. A team of workers raises a lot of money for such an outfit. Argon is generally funny)))

To come to such a technology, it was necessary to grow technologically.

the issue of organizing the sequence of production chains. I will not carry out modernization of the slipway line. Unless .... They can arrange the assembly of blocks in shop 7 and drag them to the slipway .... Let's see.

[Boa kaa]

Colleague, you also amused me from the heart! Well, at least this:

Quote: Beregovyhok_1

The submarine hull is generally 10% welded.

Reference: length 855 of the project = 139.2 m ... According to your statement, it turns out that 13-14 m of the case is the material of the electrodes !? Do you at least understand what you are writing about !?

Argon is generally funny))

Glad to make you laugh ... However, fluxes in the local welding zone create a "cloud" (local zone) that insulates the material from atmospheric oxygen ...
"But don't let it bother you anymore: I don't want to sadden you with anything" ... (c) after 941 projects, we no longer build titanium boats. Titanium products are cooked in argon atmosphere in a special chamber. The military acceptance showed somehow ... The corps, of course, cannot be shoved into it ... who does not understand this?

[Beregovic_1]

after 941 projects we no longer build titanium boats

This is what I know, and therefore I am very surprised by the reply about argon. Now they do not boil on slip-delivery argon.

Reference: length 855 of the project = 139.2 m ... According to your statement, it turns out that 13-14 m of the case is the material of the electrodes !? Do you at least understand what you are writing about !?

not 13-14, but ... The seam width when joining the blocks is more than 10 cm, do not forget that the hull sections themselves are also welded and the seams there too ...., plus a light hull, plus decks, foundations, tie-ins of mines and TA ... There is sooo much welding. And the question is not in length, but in mass, and here I was not much mistaken (if I was mistaken at all).

[Boa kaa]

Quote: Beregovyhok_1

There is sooo much welding. And the question is not in length, but in mass, and here I was not much mistaken (if I was mistaken at all).

Alksey, I only served on them, stood in the factory a couple of times. Are you a shipbuilder? However, at a construction site, we had to deal with welding, certify welders, check the work, hand over personal brands ...
Therefore, - "swam, we know!" (from)

[Beregovic_1]

Let's just say that I manage, though not directly, a gang of welders. I also did not take the figure right off the bat, and if you are interested, after specifying it, I will unsubscribe)))

[CommanderDIVA]

For such a reorganization of production it is necessary to give the Hero of Labor

[hydrox]

Ага.
But on the other hand, for the organization that has dominated for the past 20 years, it would be necessary to put up to the wall, but someone does not have enough political will for this ...

[Pavel57]

Quote: NEXUS

This is when the rearmament of the army was just beginning ...

These are the costs of re-equipping the industry. It is almost impossible to earn money from the state order, only from targeted rearmament programs.

[venik]

".... Russian nuclear submarines will begin to build according to a new method. According to the press service of "Sevmash", the company is introducing a block-modular technology for building nuclear submarines. ..... The introduced method not only significantly reduces the timing of the construction of nuclear submarines, but also cheapens his.... "
=======
And with diesel-electric submarines - HOW? This way - indispensable? And if "Varshavyanka" is SO "riveted"? Or already THIS and "rivet"?
PS Himself "not in the know"! Maybe someone will prompt? I would like to hear the opinion of "experts"!

[Eldorado]

"Varshavyanka" and "Lada" at the Admiralty shipyards are already being made according to the modular design.
Atomarines are made at Sevmash, but there is still no necessary equipment there. The re-equipment of Sevmash has been slowly underway since 2016.

[hydrox]

Please, explain to me, an illiterate, why would you build diesel-electric submarines in the same percentage as tanks, given the current level of development of long-range weapons in the presence of excellent and fast-flying carriers?

[tralflot1832]

Don't you think that shipbuilding, both civil and military, is moving from a dead center?

[hydrox]

If both of them are stranded, then with regret I record that the water level is falling, and the tugboats have sunk from dilapidation due to old age ...

[petrol cutter]

"Don't you think that shipbuilding, both civil and military, is moving off the ground?"
Dear you are my man !!! To say what it seems is to say nothing.
I am reporting this to you as a direct participant in the construction.
There is some crazy system of organizing the construction of ships / vessels.
To understand the full depth of which is simply not realistic.
And with this system, at least in blocks, at least in sections, at least entirely in the building stocks, you cannot meet the deadlines.
Everything is constantly lacking. Or simply not.
How and what the technologists, rationers, planning departments, suppliers plan, I cannot understand.
It's just a "twilight zone" and no one will ever let me in there.

[CommanderDIVA]

This is a mess in the logistics of shipbuilding

[Pavel57]

Quote: Pavel57

Designers should no longer submit blueprints to the boat, but blueprints for cubes.

I wonder who gave me the cons in shipbuilding understands something?

[hydrox]

About 40 years ago, apparently, I understood ...

[petrol cutter]

". According to this technology, ready-made, but not yet tested, block-sections of the future submarine enter the slipway, where blocks are formed from them. After that, the formed block passes the stage of hydraulic tests and the sections are again separated."
To be honest, I personally did not understand anything. I personally did not build a submarine, though (rather, I was engaged, on the contrary).
But, as the formed block then separates again
I personally cannot understand. And most importantly, why? !! ..
At my work, blocks (that, even sections) are connected by welding. With the passage of the entire "kitchen", X-rays, quality control department, military representatives (if the ship is military) in full. Once and for the rest of your life. How can you separate them later? ...
"At present, Sevmash is modernizing its production facilities and infrastructure to introduce a new method of building nuclear submarines. Also, the new technology is being discussed in the relevant departments."
Is there any point in discussing it if there is already a modernization of production for this business? ..

[tralflot1832]

With your own experience, you will determine who works here at Sevmash too.

[petrol cutter]

Presumably, whoever has more Yagel than hay is close to this God-pleasing enterprise.
I have not been there. I have been to the Murmansk region. There is hay too, not so hot ...

[tralflot1832]

Think in the right direction, those who put plus signs about reindeer lichen ... I have departed from the Murmansk region to the sea for 25 years. More precisely, from Murmansk. Murmansk Trawl Fleet. I started with a BMRT type Pushkin built in 1955. Germany. I still remember them from At two hundred and fifty-ninth Novikov Playboy, I'm sorry Priboy participated in the destruction of capelin. On Planet 410 (Polish construction) in 86 we finished with capelin. Why did I remember about capelin, today I did not find it in Sochi. I won’t find it capelin this year from the Barents Sea (I don’t recognize another) Ours and the norgs agreed, a ban on fishing.

[APASUS]

This is how civilian and military ships have been built for 30 years, and we have just begun to discuss possible use in the military sphere.

[petrol cutter]

Did you just find out?
All ships are built using the same methods. You can't think of anything fundamentally new there.
The whole difference is in the equipment / consumables (first of all). And sufficient motivation of employees in production. Since the work of the edge is hard and not particularly useful for well-being.
Apparently it's not just that there is a "hot grid" tariffication, and many people did not live up to the previous boarding house.

[APASUS]

Quote: Petrol cutter

Did you just find out?

I just found out.

Quote: Petrol cutter

All ships are built using the same methods. You can't think of anything fundamentally new there.

Well, why, they came up with a SKD, but we all went the old fashioned way to lift the hull from the keel.

Quote: Petrol cutter

The whole difference is in equipment / consumables (first and foremost)

Warships and civilians build the same shipyards and the same equipment, I bet.

Quote: Petrol cutter

And sufficient motivation of employees in production. T

The motivation of employees is usually determined by the level of monetary remuneration. No one already on patriotism fulfills military orders, as well as civilians.

Quote: Petrol cutter

Since the work of the edge is hard and not particularly useful for well-being.

Still harmful enough

Quote: Petrol cutter

Apparently it's not just that there is a "hot grid" tariffication, and many people did not live up to the previous boarding house.

This is in Soviet times, now I don’t know if there is a “hot grid” at all? I know a couple of three chemical enterprises where it is “useful” to breathe chemical reagents, as the management says!

[petrol cutter]

The devil only knows ... I don't understand what a "large subassembly" is ...
Which nodes are assembled in large quantities, which are small ...
In theory, a large node is assembled from smaller ones. Or I'm wrong? Someone has to assemble smaller units in order to assemble a larger one from them. Or I'm wrong?
So, what actually changes in production?
Today, I suppose, the average node assembly took place ...
Assembling the bulkhead, what kind of assembly is that? ..

[Pavel57]

Quote: hydrox

About 40 years ago, apparently, I understood ...

You plus from me.

[Tests]

tralflot1832 (Andrey S.), dear, geography to you today: 2-, along the perimeter of SEVMASH, everything is fine with grass. Before the reindeer moss, it was necessary to go along the most beautiful railway in the Russian Federation from the Vodogon station to the Beloe Ozero village station. And from the village along the timber road to the southeast to Pultozero. True, today there clever lumberjacks have mowed pine trees to the water and almost all of them ripped off lichen with the wheels of machinery. Yandex map in "Hybrid" mode will show the barbarity in the current Russian Federation. It was 30 years ago they remembered about the water protection zone (foresters were not optimized at that time), there were 2 girth pines on a white reindeer reindeer, and juniper bushes were 1,5-2 m high near the lake shore , and porcini mushrooms, as in movie tales.
Boa constrictor KAA (Alexander), dear, but please do not pay attention to the press service of SEVMASH, it was from it that the current chairman of the Council of Deputies of Severodvinsk, Mikhail Storozhilov, famous in the city of balobol, came out. Teachers of the Russian language and literature, correspondence journalists have been sitting there for years and, for example, for the 75th anniversary of the Victory, they publish a brochure, where there is not a word about the boats of the "M" type, which the plant No. 402 completed during the war, carried out their factory tests and passed on to the Northern the fleet. They write that they do not know and do not want to know on a not sickly salary and with bonuses for the delivery of an order ... The steel hull is boiled, we will write it - with automatic machines, titanium alloys, including the hull of the boat - also, except for small details, weighing up to 200 kg. Welding them in airless chambers, where the welder is taken as an astronaut or deep-sea diver in a helmet with hoses for supplying an air mixture and in a spacesuit, like "Military Acceptance" in one of his films, either about "Borey", or about "Ash "showed ... SEVMASH's trouble is that Arktika was originally made as a separate enterprise, the order is supplied with cables and devices from different parts of the city. Open Yandex map, or even better Google - there the Sukhona floating dock with the order taken out of shop 55 has been pulled out of the pool in the Northern Dvina, Nakhimov is standing at the gate of shop 50 in the pool, the pool is half drained. New workshops cannot be added to 50 and 55 - there is no place. And if you also remember that Okeanpribor, the former Polar Star, is located in the south of the city, behind the Lake of First Builders (though Google called it Lake Zaborikha and the plant behind the Severodvinsk-Nyonoksa railway and Yubileinaya street called it " JSC "Northern Raid") you will understand that there is no way to make a revolution in the assembly of hulls at SEVMASH ... It is very likely that Mr. Spiridonov once again proves to Mr. Budnichenko, through the hands of journalists from the press service, that he is it was not in vain that his bureau in the Sevmash PKB plows day and night efficiently and the benefit from his work will be not today, so tomorrow.
I wonder how much money USC allocated for this talk for business trips of its parasites to SEVMASH? And the last phrase caused a wry grin. Specialized departments - what is this? Maybe this is the Center for Hygiene and Surveillance No. 58 FMBA RF? Or is the now corrupt military mission that works in Severodvinsk and received the Order of the Red Star under the USSR? "Military Acceptance" didn't say a word about bribes from the guys from the military reception ... Or is it "Rubin" and "Malachite", or the Ministry of Finance of the Russian Federation? They have been discussing for almost 4 years, and how much more will they discuss? For the Chinese, SEVMASH blinded two "Varshavyanka" 373 Yuan Zhend 74 Hao and 373 Yuan Zhend 75 Hao in 2,5 years. True, then the faces, the Organized Crime Control Department, the drug control department controlled their construction, and in the "4th department of the Internal Affairs Directorate of the Arkhagelsk region" there were still professionals, not protectors ...

[beeper]

Quote: Beregovyhok_1

Titanium-containing steels are cooked in an inert atmosphere. So you need

Okostya! boats of the 4th generation are built by electric arc welding and Bulgarian, as well as boats of the 3rd generation.

the accuracy of assembling the units "inside" the finished compartment, especially at the joints, must be within a millimeter tolerance ... two, as in the layout of the hulls of airliners! This makes special demands on the level of training (assemblers, assemblers) ...

Whinnying to tears)). At Sevmash, all built boats of the same project had different lengths. The difference is up to half a meter. One donkey from the Quality Department tried not to sign the act, as the boat turned out to be 20 cm longer. They sent him. There is a tolerance for docking and welding, the submarine hull generally consists of 10% welded seams.

So you need to create local - minimum! - conditions of an argon environment. Manual? - it is unlikely, a semiautomatic device or an automatic machine, most likely around the perimeter of the case with a diameter of 10-11m. And it will be cooler than boiling the pipes of Nord Stream-2!

docking of the body blocks is done manually, by electric arc welding. 15-20 highly qualified welders simultaneously start work around the perimeter and cook without interruption, so that the body does not take away when it cools. A team of workers raises a lot of money for such an outfit. Argon is generally funny)))

To come to such a technology, it was necessary to grow technologically.

the issue of organizing the sequence of production chains. I will not carry out modernization of the slipway line. Unless .... They can arrange the assembly of blocks in shop 7 and drag them to the slipway .... Let's see.

Thanks for the realistic feedback!
A work partner who, in the post-war period, even under Stalin, graduated from a specialized FZO as a boy and worked for many years on the construction of destroyers and submarines in Nikolaev, told about the same thing.
And not "titanium-containing steels" ("stainless", quite "tolerant" to conventional electric arc welding), but titanium alloys cook only (otherwise, no way!) in an inert gas environment (titanium parts of the hulls of Soviet submarines - "goldfish" 705, 661 and 945 projects and the center sections of strategic Tu-160 bombers were cooked in special sealed caissons, with forced air supply to the suits working inside welders).