LRL

Question 1

LRL is …

Answer 1

kernmantle construction
Nylon core (kern)
sheath (mantle)
polyestor and nylon filaments

Question 2

kernmantle rope

Answer 2

Filaments- individual thread twisted to form each strand of the core and sheath
STRANDS- nylon filaments twisted to form strands which make up the core
IDENTIFICATION TAPE- printed with the man name and production standards. Runs length of rope batch and production date.
CORE- parallel strands, left and right hand lay to reduce rope twist and spin
SHEATH- braided to protect the core

Question 3

specifications

Answer 3

Diam- 13mm
Colour- orange with blue fleck
blue with orange fleck
Safe working load- 272 kg (15:1 safety factor) 4080kg
Fibre- Nylon 6 core, polyester sheath
Melting point- 250
Elongation 3%@80 kg
Strength 70%core 30% sheath

Question 4

care and maintenance

Answer 4

camsue

Question 5

chemical

Answer 5

exposure, fumes or direct contact,
solvents, acids, alkalis

Question 6

abrasion

Answer 6

most significant cause of line failure resulting in serious injury or death
DO-protect edges
DONT- stand/walk/jump on rope (grit or sharp objects in rope)
- draw or drag line across ground or surfaces
- where a fixed line contacts an edge abrasion may occur

Question 7

mechanical damage

Answer 7

blunt objects causing damage to core not sheath.
feel for change in shape/diameter
edges or bends under load.
impact from solid objects

Question 8

shock loading

Answer 8

shock load due to a fall will be permanently weakened.
*Do not let slack form in system.
any rope after shock must be removed from service

Question 9

UV

Answer 9

polonged exposure causes damage.
Minimise to sunlight or flourescent lighting

Question 10

Extreme heat

Answer 10

causes melting
-friction can cause damage and loss of strength

Question 11

signs of damage

Answer 11

pilling
friction

Question 12

knot protocols

Answer 12

strict
slect the right knot fo the job
place tension on the line to set and tighten the knot
remove knots when not in use
inspect the knots
check- 2nd FF check with LRL knots
Tail 150mm

Question 13

LRL knots

Answer 13

figure 8 stopper
figure 8 on the bight
figure 8 follow through
Alpine butterfly
double fishermans knot

Question 14

After use of LRL

Answer 14

• inspected b4 and after every use
• After use, where work is done, fill out the rope card and send to FS10
  -history of usage recorded at FS10
  -If damage found or suspected, fill out rope card and send rope card AND rope to 10
• FS10 carry replacement and spare SW@h kit components

Question 15

Advantages of a good knot

Answer 15

TRUSS
easy to tie
easy to recognise
easy to undo
won’t slip
won’t reduce strength of rope too much.