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109. AVALANCHE CORD
QUALITATIVE REQUIREMENTS PICTURE OF
EQUIPMENT
This specification covers the requirement of cord
avalanche. The cord is intended to be used as an aid to
trace the casualty in avalanche operation so that therescue
party could reach the location.
The cord shall confirm in every respect to the terms of
this specification .in workmanship, finish and in all other
respect not defined in this specification. it shall confirm
to the sealed sample held in custody of controlling
authority.
Material :- The core ends of cord shall be made from
continuous 140 Tex (1260d) nylon 6 or 66 multifilament
yarn of adequate tenacity to give the desired strength and
be given heat treatment. The sheath yarn shall be made
from nylon (6 or 66) or polyester and shall be dyed with
fluorescent dye count/denier of the yarn can be varied
suiting to the construction and finish of the cord.
Manufacture, workmanship and finish:- The cord shall
be in braided construction with core. The core shallbe in
one continuous length and shall be well formed and free
from knots, suborn stains. All constituent yarns of cord
shall have proper tension during manufacture so as to
obtain uniform diameter with round cross section and
appropriate flexibility.
2) There shall be 10 undyed core ends and 16 dyed
spindle ends in sheath. Out of 16 spindles,14 spindles
shall be fast bright yellow colour and 2 spindles of fast
bright blue colour . interpolating of sheath,2 spindles of
blue colour shall be put adjacent to each other in group
spindles moving in he same direction in order to obtain
required pattern of the braiding. The cord shall be smooth
in feel and free from slackness of sheath and core looping
tendency.
3. The cord shall be tendered in 35m continuous length a
length of 3 m from any of the end shall be cut tested for
characteristics in clause 5 & 6 below in accordance with
the sampling plan mentioned in para 9 in case of lot is
found acceptable both the ends of the cord shall be heated
sealed. The cords from which 3 m, length has been cut for
destructive testing shall be accepted in 32 mlength and
length of such cord shall be clearly mentioned by the
supplier on the marking level attachedindicating that 3m
length has been destroyed in testing.
4. in appearance, general workmanship ,finish and in any
other respect not defined in the specification the cord
shall match with the respective sealed sample held in the
custody of controlling authority.
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CONSRUCTION PARTICULAR particular of card
shall be as under.
1. Sheath
a) Count -1260 dx1
b) No of spindles – 16 (yellow 14) ( blue -2)
2. Core
a) Count -1260 dx2 (twisted together)
b) No of core ends-10
The construction details of the cord may be varied to
suit the manufacturing condition provided the finish and
requirement as given in clause 6 are successfully met.