fechamento de portas estanques

CLOSING OF WATERTIGHT DOORS

A ship’s ability to withstand damage and contain flooding and fire depends to a large degree on its watertight doors and other closures. Not only do the doors have to be in good operating condition, but the crew must be trained to close them during fire and emergency drills so that in time of emergency they will be closed automatically.There are several types of watertight doors. Some are closed by individual dogs and some have a hand wheel or lever which controls all the dogs. In this case it is simply necessary to spin the lever or wheel to close the door. Some ships have watertight doors which can be operated remotely from the bridge.Watertightness of the door is insured by rubber gaskets which are forced against the knife edges when the dogs are secured. Chalk testing the fit by placing chalk on the knife edge, dogging the door, and then checking to see that chalk comes off uniformly on the gasket will insure that the closure is in fact watertight. Gaskets should not be painted and any paint which slops over on the gasket when the door is being painted should be removed with the wooden handle of a wire brush.

GLOSSARY

To withstand

Flooding

To contain

Watertight

Lever

Wheel

To spin

Closure

Drill

Dog

To slop over

Wooden

Bridge

To insure

Crew

To flood

Secured

Handle

Gasket

Edge

Derramar

Alagamento

Deter

Impermeável

Girar

Alavanca

Roda, volante

Fechamento

Tripulação

Exercício

Grampo, gancho

De madeira

Passadiço

Assegurar

Alagar

Fixado

Cabo

Vedação

Resistir

Borda

Fit Encaixe

Match the words with the meaning

1. Flooding2. Closure3. Dog 4. Lever 5. To spin 6. To insure7. Gasket 8. To secure 9. Chalk10. Fit 11.To slop over

( ) act of closing( ) filling with water( ) a bar for opening something( ) metal device for closing watertight doors( ) to make sure( ) to turn( ) the right size( ) substance for writing or painting( ) to spill( ) to fix( ) sealing material set along the edge of

watertight doors

6

2

3

11

41

9105

87

Fill in the blanks with words from the text

1. A ship’s ability to withstand damage and contain flooding and fire depends to a large degree on its __________ doors and other _______.

2. Not only do the _________ have to be in good operation condition, but the crew must be trained to close them during fire and emergency __________ so that in time of emergency they will be closed automatically.

3. There are several types of __________ doors.4. Some are closed by individual ___________.5. Some have a hand wheel or _________ which controls all the ________.6. In the case above, it is simply necessary to spin the ________ or wheel

to close the door.7. Some ships have watertight doors which can be operated remotely

from the _________

watertight closuresdoors

drills

watertightdogs

lever dogslever

bridge

Fill in the blanks with words from the text

8. Watertightness of the door is insured by rubber _________ which are forced against the knife edge when the ________ are secured.

9. Chalk testing the _________ by placing chalk on the knife edge _________ the door and then checking to see that chalk comes off uniformly on the gasket will insure that the closure is in fact ________.

10._________ should not be painted and any paint which slops over on the ____________ when the door is being painted should be removed with the wooden _________ of a wire ________.

gaketsdogs

fitdogging

watertightGaskets

gaskethandle brush

Comprehension questions

1. What does a ship’s ability to withstand damage and contain flooding and fire depend on?

On its watertight doors and other closures.

2.How many types of watertight doors are there?

3. How are some of them closed?

By individual dogs.

4. What do some of them have to control all the dogs?

A hand wheel or lever.

5. What is watertightness of the door insured by?

Rubber gaskets

There are several.

Comprehension questions

6. How can the closure prove to be in fact watertight?

Gaskets.

7. What should not be painted?

8. How can paint on the gasket be removed?

With the wooden handle of a wire brush.

By placing chalk on the knife edge, dogging the door and then checking to see that chalk comes off uniformly on the gasket.

Practise pronouncing the words

1.Ability 2.Withstand 3.Depend 4.Remotely 5.Gasket 6.Secured 7.Severely 8.Impair 9.Regulation 10.Closure

11. Automatically 12. Individual 13. Lever 14. Uniformly 15. Compartment 16. Capacity 17. Require 18. Installed

Ask questions on the text. Use your imagination to begin and finish the questions

1. A ship’s ability to withstand damage depends on its watertight doors.

2. The crew must be trained to close them during emergency drils.

3. Some watertight doors are closed by individual dogs.

What does a ship’s ability to withstand damage depend on?

When must the crew be trained to close them?

What are some watertight doors closed by?4. Watertightness of the door is insured by rubber gaskets.

How is watertightness of the door insured?

Try to reconstruct the text

1. A ship’s ability to _______ damage and contain flooding and fire depends to a large degree on its ________ doors and other _______.

2. Not only do the ________ have to be in good operating ________ but the crew must be trained to close them during fire and _________ drills so that in time of _________ they will be closed ___________.

3. There are several types of ________ doors.4. Some are closed by individual _________ and some have a hand

_______ or lever which controls all the ________.5. In this case it is simply necessary to _____ the lever or _______ to

close the _______.6. Some ships have _________ doors which can be operated remotely

from the ______.

withstandwatertight closures

doors conditionemergency

emergency automaticallywatertight

dogswheel dogs

spin wheeldoor

watertightbridge

Try to reconstruct the text

7. ____________ of the door is insured by rubber ______ which are forced against the ______ edges when the dogs are ________.

8. ______ testing the fit by placing _________ on the knife ________ dogging the door and then checking to see that ________ comes off uniformly on the ________ will insure that the closure is in fact ________.

9. Gaskets should not be ________ and any paint which _______ over on the gasket when the _________ is being painted should be removed with the wooden ________ of wire _________.

gasketsWatertightness knife secured

Chalk chalk edgechalk

gasketwatertight

painted slopsdoor

handle brush

Test your knowledge. Check the right answer

1. A ship’s ability to withstand damage and contain _______ and fire depends to a large degree on its watertight doors.a) Rusting b) Flooding

2. The crew must be trained to close the watertight doors during fire and emergency ________.

a) Locks b) Dogs

3. Some watertight doors are closed by individual ________.

a) Drills b) Tests

4. Other watertight doors have a hand wheel or ________ which controls all the dogs.a) Lever b) Key

b) Flooding

b) Dogs

a) Drills

a) Lever

5. Watertightness of the door is insured by rubber ______ which are forced against the knife edges when the dogs are secured.

a) Heads b) Gaskets b) Gaskets

Test your knowledge. Check the right answer

6. If chalk comes off uniformly on the gasket when chalk testing the fit will insure that the door is in fact _______.a) Closed b) Watertight b) Watertight