Unit 1. Welding

1.1 General Welding Requirements

Exercise 1. Study the vocabulary

requirement требование

qualified аттестованный

Purchaser-accepted принятый Заказчиком

welding procedure specification (WPS) техусловия на методику сварки

prior to до начала; перед

to apply weld overlay изготавливать наплавку

base metal surface поверхность основного металла

machining механическая обработка

grinding шлифовка

blast cleaning абразивоструйная очистка

degreasing обезжиривание

to complete завершать

internal components внутреннее оборудование

thickness толщина

area of attachment место соединения

to determine определять

mock-up test модельные испытания

outline описывать

acceptable разрешенный

pressure-containing weld сварной шов, работающий под давлением

shielded metal arc welding (SMAW) дуговая сварка металлическим

электродом с защитой зоной сварки

submerged arc welding (SAW) дуговая сварка под флюсом

gas metal arc welding (GMAW) дуговая сварка металлическим плавящимся электродом с защитой зоной сварки

flux cored arc welding (FCAW) дуговая сварка трубчатым электродом

root pass application проход корня шва

double-welded butt joint двусторонне стыковое соединение

provided при условии

root pass корневой валик

to remove удалять

back gouging строжка

NDE (non-destructive testing) НК (неразрушающий контроль)

require требовать

satisfactorily удовлетворительным образом

to perform выполнять

to obtain получать

written authorization письменное разрешение

Exercise 2. Complete the table and translate the words into Russian.

noun	verb	adjective
	require
		qualified
	apply
		acceptable
	complete
	determine
		performed
authorization
	remove

Exercise 3. Write the technical terms from exercise 1 into correct columns. Sometimes several variants are possible.

operations	welding	components	documentation

Exercise 4. Read and translate the text.

1.1 General Welding Requirements

1. Fabrication welding shall be in accordance with qualified and Purchaser-accepted welding procedure specifications.

2. Welding shall be performed by qualified welders or welding operators.

3 Prior to welding or applying weld overlay, base metal surfaces shall be prepared by machining, grinding or blast cleaning, followed by a degreasing operation.

4 Welding to ferritic materials shall be completed prior to final PWHT.

5. Internal attachments to the austenitic stainless steel weld overlay shall be completed after PWHT. The minimum overlay thickness in the area of the attachment shall be as determined by the mock-up test outlined in Section 11.1 item f (3).

6. Acceptable methods of welding are as follows:

a. Acceptable methods of welding for pressure-containing welds are shielded metal arc (SMAW) and submerged arc (SAW).

b. Gas metal arc welding (GMAW) may be used for root pass applications in double-welded butt joints, provided the root pass is completely removed by back gouging.

c. Gas tungsten arc welding (GTAW) shall be permitted for root-pass applications if the NDE required for Type No. 1 welds can be satisfactorily performed.

d. Flux cored arc welding (FCAW) shall be permitted for the welding of non-pressure-containing internal components.

e. Manufacturer must obtain written authorization from Purchaser to use other welding methods.

Exercise 5. Match the halves of the sentences.

1. Fabrication welding shall be in accordance with	a. Purchaser to use other welding methods.
2. Gas metal arc welding (GMAW) may be used for	b. qualified and Purchaser-accepted welding procedure specifications.
3. Welding shall be performed by	c. base metal surfaces shall be prepared by machining, grinding or blast cleaning.
4. Prior to welding or applying weld overlay	d. root pass applications in double-welded butt joints.
5. Manufacturer must obtain written authorization from	e. qualified welders or welding operators.

Exercise 6. Answer the questions.

1. What are the permittable welding procedures?

2. Who shall welding be performed by?

3. When shall welding to ferritic materials be completed?

4. How shall overlay thickness be determined?

5. When can Manufacturer use other welding methods?

Exercise 7. Use the answers to the questions to retell the text.