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8. Complete the text using the words and phrases in the list.

Example: 0 storage

BOLTED TANKS

The production of petroleum and its by-products requires 0. _________________. During the years, tanks developed from wooden to 1.___________ __________ tanks. Bolted tanks are 2. ___________

elements and assembled 3. ______________. They are designed according to 4. ________ ________________. Bolted tanks can be easily 5. ___________ and 6. _______________ at new locations. The 7. __________ _____________ can be replaced in the field. For example, a hole developed from 8. ____________ or damaged, a single 9. ___________ may be replaced. No special equipment is required.

These tanks can be erected 10. _________. These tank types include painted, 11. ____________, and special coatings. Bolted tanks are fabricated from 10-12 in. 12. ______________.

0 storage

1 gauge steel

2 sheet

3 bolted –steel

4 corrosion

5 API specification

6 re-erect

7 manually

8 segmental

9 galvanized

10 tank bottom

11 on location

  1. ismantle

9.The pictures show the installation process of tanks. Read the information and number the steps.

Example: 1.- D. tank bottom is assembled on the prefabricated foundation from separate steel plate.

Tank installation is to be performed in the following sequence:

A. separate steel plates which are welded to each other

B. assembled circular belts are installed by the method of top-down construction.

C. tank is to be lowered down on the bottom elements upon assembly of the last belt

1

D. tank bottom is assembled on the prefabricated foundation from separate steel plates

E. then fixed roof is lifted up together with the tank shell

F. tank wall is assembled of the steel belts up to 3 m wide

G. the rims are welded to the tank bottom

H. a fixed roof is installed upon the assembly of the first belts

I. system of hydraulic lifting jacks forming a conductor is set up around the whole perimeter;

10. Answer the following questions.

  1. What is top-down construction method?

  2. What is chime welding?

  3. How many hydraulic lifting jacks are set up around the whole perimeter? What is the maximum distance between the jacks?

  4. What are circular belts?

  5. Why must the steel belts be up to 3m wide? If not then state the width of these belts?

  6. What are the advantages of top-down construction?

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