Offshore Passive Fire Protection (PFP) - 8

Question 1

Fire protection should not to be confused with fire prevention. Fire prevention equipment is ,,,,,

Answer 1

Extinguishers and

Hoses to sprinklers

Question 2

PFP is the materials used ,,,,,,

Answer 2

to minimize the effects of a fire when the prevention has been unsuccessful and the fire is established

Question 3

Fireproofing needs to be applied to areas, such as;

Answer 3

• accommodation,
• production and compressors modules;
• escape routes and the
• primary structure of the platform,
• where there is risk to personnel and production plant

Question 4

Hydrocarbon fire temperatures can reach 1250°C in a very short time; this is referred to as;

Answer 4

thermal shock

Question 5

The thickness of the PFP applied and in some instances, type, depends on four main factors:

Answer 5

• Type of Fire
• Core Temp. of steel
• Length of time at which PFP has to maintain temp.
• The Hp/A factor

Question 6

The Hp/A factor (section factor principle) is;

Answer 6

the ratio of the exposed heated perimeter of the steel member, divided by its cross-sectional area

Question 7

The smaller the cross-section of a member,,,,,,, ;

Answer 7

the less steel there is to absorb the heat

the member will conduct heat more easily

Question 8

Therefore, the smaller the cross-sectional area,,,,, ;

Answer 8

the thicker the PFP will need to be

Question 9

PFP calculations already listed in table form in book called commonly

Answer 9

yellow book or Constrada.

Question 10

PFP calculation for off shore platforms section, plate, girder need to be done, but not by,,,, ;

Answer 10

Inspector

Question 11

,,,,, type of codes are used for different fire rating given for bulkhead, underdecks and similar sections and are exposed in code form

Answer 11

• A-60 class division
• B-15 class division
• H-120 class division

Question 12

The most frequently encountered fire ratings are ,,,,,,, ;

Answer 12

• the A and H ratings

Question 13

This type of fire can take quite a long time to build up to high temperatures. ;

Answer 13

• cellulosic fires, typically (wood, paper and fabric)

Question 14

Jet fires can produce temperatures up to,,,,,, ;

Answer 14

• 1400oC and are extremely dangerous

Question 15

The two most widely used materials offshore being ,,,,, ;

Answer 15

• epoxy intumescent and cementitious

Question 16

PFP coatings are often referred to as ,,,,,,, ;

Answer 16

• fire resistant or flame-retardant coatings

Question 17

PFP coatings have no ,,,,,,,,properties ;

Answer 17

• anti-corrosion

Question 18

PFP coatings are applied over an ,,,,,,,,,,coating;

Answer 18

• anti-corrosion

Question 19

Intumesce means to ,,,,, ;

Answer 19

• swell

Question 20

Intumescent epoxies are ,,,,,, ;

Answer 20

two pack 100% volumetric solids (VS) high viscosity coatings

Question 21

To bring the materials to suitable spraying viscosity, ,,,,,,is required and when mixed, this considerably shortens the ,,,,, ;

Answer 21

• Heat

- pot life

Question 22

PFP material is applied through ,,,,,, ;

Answer 22

• Plural spray (spray gun)

Question 23

Because of the viscosity of the material a fairly large tip is necessary, around ,,,,,,,, ;

Answer 23

• 35 thousand.

Question 24

The material can be applied in coats up to ,,,,,,,,, ;

Answer 24

• 7mm

Question 25

It is normal practice to ,,,,,,,,areas of overlap to avoid over thickness and a reinforcing mesh of ,,,,,,,, material can be rolled in at the same time ;

Answer 25

• trowel out

- synthetic

Question 26

Intumescent epoxies work by ,,,,,,,,when submitted to flame action at ,,,,,,,, oC, releasing acid, which reacts with spumific materials, releasing non-combustible gases such as ,,,,,,,,, vapour ;

Answer 26

• softening the resins
• 200-250oC
• CO2 and NH3 and H2O

Question 27

The materials form a ,,,,,,,,,,,which insulates against temperature rise

Answer 27

• carbonaceous char

Question 28

Application thickness can vary between typically ,,,,,,,, ;

Answer 28

• 4-15mm

Question 29

These materials can be repaired and brought back to required thickness after exposure ,,,,,, ;

Answer 29

• to fire

Question 30

Epoxy intumescent is applied over a,,,,,,,,, , but the materials must be tested and approved for use together ;

Answer 30

• primed surface, (normally zinc phosphate epoxy)

Question 31

The tests are carried out at ,,,,,,,,,approved laboratories and are usually a ,,,,,to test for adhesion between the primer and PFP ;

Answer 31

• NAMAS/UKAS

- lap shear test