16 Unit 3

Kick off 1 Look at the pictures. M a t c h each i t e m of measuring equipment w i t h the parameter i t measures.

Equipment

Parameter 1 t i m e 2 temperature 3 w e i g h t 4 speed 5 distance

M a t c h the pictures i n 1 w i t h these names of pieces of equipment . 1 2 3 4 5

scales t h e r m o m e t e r tape measure speed camera stopwatch

W h a t equipment do y o u use i n your home, job, or place of study t h a t measures one of the five parameters i n 1 i n order to work? E X A M P L E

An electric kettle measures temperature and switches off.

Vocabulary Units and measurement M a t c h each physical qual i ty v\nth the correct u n i t name and symbol . Scientific measurements are made using SI units . The system starts w i t h a series of base units .

Physical quality / Unit parameter Name Symbol

1 length 2 mass 3 t ime 4 current 5 temperature

a kilogram b ampere c kelvin* d second e metre

A K kg m s

*Kelvin is always singular. We do not say degrees kelvin. '' For example Water freezes at 273 kelvin.

2 Complete the sentences w i t h u n i t names f r o m 1.

1 The heating system draws 30 on its highest setting.

2 Liquid h e l i u m boils at about 4 3 It took four for the motorcycle to reach

100 kph. 4 The bridge is 927

the east end. 5 The concrete contains 30 .

. f r o m the west end to

. of sand.

3 W h a t other units can y o u use to measure the five parameters i n 1?

Measurement 17

In this unit • units and measurement • weights and measures • inspection and quality control • possibility and probability • writing a short inspection report

It's my job 1 Tony Macari is an inspector for a m a n u f a c t u r i n g

company. W h a t do y o u t h i n k he does i n his job? 2 Read the text and check your answers.

Tony Macari

I w o r k for a m a n u f a c t u r i n g company. We make products for the m o t o r i n d u s t r y - most ly brake systems. I've w o r k e d here for nearly one year. I 'm an inspector. I w o r k i n the Quality Control Department . The Qual i ty Control Department has t w o sections: Quality Assurance - QA - and Qual i ty Control - QC. QA makes sure t h a t our systems and procedures meet the required standards, so t h a t w e consistently produce acceptable products. Quality Control catches errors i n our products and corrects t h e m before products go out. Part of m y job is m a k i n g sure t h a t the parts are w i t h i n tolerance. I use a variety of standard instruments : micrometers, dial gauges, callipers, and so on. These instruments take very accurate measurements. W h e n I f i n d something t h a t is out of tolerance, I w r i t e a rejection slip - a short report that explains the problem. Then I need to f i n d out w h a t caused the problem. Little problems m a y arise i n the m a c h i n i n g process. This means I need to k n o w a lot about the machines and h o w t h e y w o r k . I usually f i n d just one or t w o rejects i n a batch of parts, b u t sometimes w e have a problem w i t h an entire batch.

3 Complete the sentences about tolerances. Use the words i n the l ist . batch i n tolerance out of tolerance Quality Assurance Qual i ty Control reject

1 The section works t o prevent problems i n manufactur ing .

2 The section works to solve m a n u f a c t u r i n g problems w h e n t h e y occur.

3 A piece t h a t is is acceptable and can be used.

4 A piece t h a t is isn't acceptable and can't be used.

5 A is a piece that cannot be used. 6 A is an a m o u n t of something t h a t is

produced at one t i m e .

4 Read again and check your answers.

5 W o u l d y o u like to do Tony's job? W h y / w h y not?

Pronunciation 1 Q Listen.Repeatthe words . Notice w h i c h syllables

are stressed. accurate kelvin appliance k i logram control measurement inspect metre inspection rely inspector second

2 Complete the table w i t h the words f r o m 1.

current temperature amount equipment

3 Q Listen and check your answers.

18 Units

BrE AmE

boot t r u n k

Number talk Weights and measures

M a t c h the words w i t h the abbreviations. 1 m i l l i g r a m s c m 2 grams g

3 kilograms kg 4 mi l l imetres k p h 5 centimetres m 6 metres m g 7 kilometres per hour m m

2 Can y o u pronounce the words correctly? What's the. . . l e n g t h w i d t h height depth w e i g h t speed diameter

3 (ij) Listen and check.

How.. . is it? long w i d e h i g h deep heavy fast

4 Look at the picture. Answer the questions. 1 What's the car's length? 2 H o w w i d e is the car? 3 What's the car's weight? 4 What's the car's top speed? 5 H o w deep is the boot (storage space) at the back of

the car? 6 H o w h i g h is the car? 7 What's the diameter of the wheel?

4330 mm • 1840 mm

1339 kg

1150 mm

5 Work i n small groups. Play a game. 1 Take turns to t h i n k of an object that y o u have w i t h

you , but don't say w h a t i t is. 2 The other students ask questions and t r y to guess

w h a t i t is. Do your best to guess the measurements. E X A M P L E

A How long is it?

B About twelve centimetres.

A How heavy is it?

B Not heavy. About 140 grams.

A Is it your phone?

B Yes, it is.

Listening MOI Inspection and quality control

1 ({}> Listen. M a t c h each conversation w i t h a picture.

A machine shop supervisor is talking to an inspector.

Two inspectors are talking to one another.

247 kph

Measurement 19

: = oh or nought or zero 15 = two point five 155 = two point five five : r025 = zero point zero zero two five

2 Complete the sentences. Conversation 1 1 The piece has been rejected because a dimension is

tolerance. 2 The problem is w i t h one piece, not the w h o l e

3 There should b e . 4 The machinist used a .

. f i n i s h e d parts. to set up his

machine. Then he probably p u t i t w i t h the other parts by mistake.

Conversation 2

5 The hole is w i t h i n . r ight .

6 The hole isn't

. b u t i t doesn't feel

. r o u n d . 7 Jim hasn't checked the ' 8 The m i g h t be able to rework the part .

3 (|p Listen again and check your answers.

• Language spot Possibility and probability

1 M a t c h the captions w i t h the pictures. 1 The machine shop m i g h t be able to rework this . 2 This m ust be the correct part . 3 This can't be the correct part .

2 Answer the questions. 1 W h i c h t w o people i n 1 are certain? 2 W h i c h person i n 1 is uncertain?

3 Complete the sentences w i t h might, can't, or m u s t 1 We use fo l lowed b y an i n f i n i t i v e t o say

something is certain. 2 We use fo l lowed b y an i n f i n i t i v e to say

something is impossible. 3 We use , may, or could fo l lowed b y an

i n f i n i t i v e to say something is possible.

» Go to Gxammar leference p . l l 9 4 Complete the conversation w i t h could, might, or must.

Tomas One of us needs to go to the meet ing at 12.00. ' be able to go. Have y o u Uri M a r c o .

asked him? Tomas Yes, b u t he can't. W h a t about you, Alicia? Al ic ia I have a site v is i t this m o r n i n g , so I

^ go to a m e e t i n g at 12.30. But not 12.00.

Tomas We ^ be able to change the t i m e to 12.30. I ' l l ask Gregor.

U r i W i l l the management t e a m be there? Tomas Yes, I 'm certain t h e y " be coming.

They always attend the progress meetings. A l ic ia We ^ have to ask Barton. His car

is i n the car park, so he ^ be here today.

Think of a number that is personal to y o u ( b i r t h year, age, height , number of brothers y o u have - anything) . I n small groups, t r y to guess the meaning of others' numbers. Use the Language spot language. A 2009.

B It can't be your birth year.

C It might be your high school graduation year

D It must be the year you started university.

A Yes, that's right.

C - could

Smith Welding and Fabricatio //V/ // T M l ' \

( i m a micrometre is one mil l ionth of a metre ± plus or minus, used to indicate accuracy

Reading Quality control in welding S k i m m i n g (reading for general understanding) is a useful study skil l . W h e n y o u skim, y o u don't read every w o r d . You look for key words that w i l l give y o u a general idea of the text .

1 Skim the text . Put the headings i n the correct place, a Quality tools and instruments b Serving i n d u s t r y c Guaranteed accuracy - every t i m e

2 Read the text again. Find words w i t h these meanings.

Paragraph 1 1 (n) components 2 (n) parts j oined together

Paragraph 2

3 (adj) having a f o r m a l quali f ication to do a job

Paragraph 3 4 (n) procedures or measurements t h a t ensure

q ual i t y by agreement to use t h e m w i t h i n an i n d u s t r y

5 (n) number, usually used i n pairs, to check the posit ion of a point

6 (adj) i n a straight l ine 7 (adv) done w i t h the eyes

3 Look again at the second and f i n a l paragraphs. Answer the questions. 1 W h a t do welders do to solve problems before

t h e y occur? 2 W h y do y o u t h i n k a temperature-controlled

r o o m is important? 3 W h a t is the heaviest part the C M M can handle? 4 W h a t is the m a x i m u m depth i t can measure? 5 According to the text , w h a t is the most

i m p o r t a n t tool an inspector uses?

Since 1985, Smith Welding and Fabrication has worked closely with engineers and designers to produce machined parts, finishec components, and assemblies. We deliver precision, high-quality metal work for the following industries: • Oil and gas - drilling rigs, pump frames, and components • Mining - ladders, frames, bumpers, and other add-ons for

heavy machinery • Electrical generation, including wind energy - components for

wind turbines and power stations • Construction - crane components • Telecommunications - towers and antennae

Smith Welding and Fabrication meets your specifications on every job. How? We carefully check every work piece, machine tool, and inspection gauge during each stage of manufacturing. Our welders are all fully certified and highly experienced. They carefully check their own work before our quality control inspector checks it. Any piece that is out of tolerance is immediately re-done before work continues. That means our finished products are exactly what customers expect: high-quality work.

We use the best tools and instruments. • Our quality-control lab is temperature-controlled, so our gauges

and instruments always meet certification standards. • Our coordinate measuring machine (CMM) has a 200 x 150

cm. table, a vertical range of 120 cm, and can measure parts weighing up to 3000 kg to ±100 pm in each linear direction.

• The best set of tools an inspector can have is his eyes. All completed welds are visually checked throughout the process.

4 Welded items are a l l around us. Can y o u f i n d five welded products where y o u are r i g h t now?

Measurement 21

Checklist

Writing A short inspection report

1 Look at the technical d r a w i n g of a machine part . Answer the questions.

6.010 mm ±0.004 mm

50 mm ± 0.25 mm

1 H o w long should the part be ? 2 W h a t diameter should i t have? 3 What's the m a x i m u m length the actual part can be ? 4 What's the m i n i m u m length? 5 W h a t about the m i n i m u m and m a x i m u m diameter? 6 W h a t about the m i n i m u m and m a x i m u m hole depth?

2 Read the inspector's measurements on the prototype. Complete the inspection report.

Inspector's measurements

length 50.4 m m diameter 6.009 m m

mi hole depth 10.012 m m

Inspection Report 16A Item number: 92000UK

Accept • Reject • If rejected, give reason(s): The ^ of the piece is out of tolerance. According to the drawing, it should be between

2 and 2.

The piece is problem with the lathe. Please check it.

\e may be a

Assess your progress in this unit. Tick (/) the statements which are true.

I can talk about units and measurement I can talk about tolerances I can discuss inspection and quality control I can use modals to talk about possibility and probability I can write a short inspection report

Key words Adjective accurate out of tolerance w i t h i n tolerance Nouns amount ampere batch current inspector length mass precision quality assurance (QA) quality control (QC) reject rejection slip

3 Work i n pairs. Student A, go to p. 106. Student B, go to p. 111.