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WangText
…07……00……00……00……00…B…86…1 …02… …02… …02…
CPS/AUX/001
19801008…02……02…
CAMPS RECOMMENDED SPARE PARTS LIST (RSPL)
CAMPS
T̲A̲B̲L̲E̲ ̲O̲F̲ ̲C̲O̲N̲T̲E̲N̲T̲S̲
1 SCOPE ........................................
2
2 METHODOLOGY ..................................
2
2.1 PERIOD OF SUPPORT ........................
2
2.2 INSURANCE ITEMS ..........................
2
2.3 MAINTENANCE FLOAT ITEMS ..................
2
2.4 BASIS FOR CALCULATION ....................
3
2.5 FORMULA FOR SPARES CALCULATION ...........
4
3 BIDDING PROVISIONS ..........................
6
3.1 PRICING ..................................
6
3.1.1 Price Basis ..........................
6
3.1.2 Forward Pricing ......................
6
3.1.3 Terms of Delivery ....................
6
3.2 VAIDITY .................................
6
3.3 DELIVERY .................................
7
3.4 TESTING ..................................
7
3.5 PERIPHERAL EQUIPMENT SPARES ..............
7
3.6 PIECE PARTS .............................
7
3.7 REMOTE EQUIPMENT .........................
7
4 PRICE SUMMARY ................................
8
5 DELIVERABLE SPARE PARTS, MAIN SITES ..........
9
5.1 SHAPE ....................................
10
5.2 NATO .................................... 11
5.3 REITAN ...................................
12
5.4 KOLSAAS ..................................
13
5.5 SONOR ....................................
14
5.6 BALTAP ................................... 15
5.7 UKAIR ....................................
16
5.8 KANNE ....................................
17
5.9 BOERFINK .................................
18
5.10 RUPERTSWEILER ............................
19
5.11 WEST STAR ............................... 20
5.12 PROTO ....................................
21
5.13 DISCO NET .................................
22
5.14 MEDNOREAST ................................
23
5.15 NCS LATINA ................................
24
5.16 NMSA .....................................
5.17 ATHENS ....................................
25
6 DELIVERABLE SPARE PARTS, DEPOTS...............
26
6.1 SINGLE DEPOT .............................
27
6.2 NOTHERN DEPOT ........................... 28
6.3 SOUTHERN DEPOT ...........................
29
6.4 EXPLANATION OF NOTES .....................
30…86…1 …02… …02… …02… …02…
1 S̲C̲O̲P̲E̲
The scope of this document is to present a Recommended
Spare Parts List (RSPL), which will support the achievement
of predicted availability of each site with a conidence
level of 80%.
2 M̲E̲T̲H̲O̲D̲O̲L̲O̲G̲Y̲
2.1 P̲E̲R̲I̲O̲D̲ ̲O̲F̲ ̲S̲U̲P̲P̲O̲R̲T̲
The RSPL for each site has been prepared to ensure
90 days of operation whereas the RSPL for the supply
depots has been prepared to ensure the presence of
spares required to suply the sites for a period of
270 days.
2.2 I̲N̲S̲U̲R̲A̲N̲C̲E̲ ̲T̲Y̲P̲E̲ ̲I̲T̲E̲M̲S̲
Insurance type items are items, which, though not required
for pure statistical reasons, must be included for
operational reasons or due to long lead time. Insurance
items have ben included at site as well as depot level.
2.3 M̲A̲I̲N̲T̲E̲N̲A̲N̲C̲E̲ ̲F̲L̲O̲A̲T̲ ̲I̲T̲E̲M̲S̲
Because of short depot repair time or for economic
reasons some items are spared in a lower quantity than
statistically required. These items are considered
Maintenance Flot.
2.4 B̲A̲S̲I̲S̲ ̲F̲O̲R̲ ̲C̲A̲L̲C̲U̲L̲A̲T̲I̲O̲N̲
a) The basis for the calculations of spares at the
supply depot(s) has been the actual installed equipment
at the sites.
b) Where insurance items hae been incorporated at
the site level, due considerations have been given
when calculating spares at the depot(s). Where
a maintenance float philosophy has been applied
the spares at the depot(s) have been limited to
a quantity of 9 items. The spars calculated for
depot(s) may also be given maintenance float considerations.
All items which have been given insurance or maintenance
float considerations are identified in the Remarks
coloumn of the printout.
2.5 F̲O̲R̲M̲U̲L̲A̲ ̲F̲O̲R̲ ̲S̲P̲A̲R̲E̲S̲ ̲C̲A̲L̲C̲U̲L̲A̲T̲I̲O̲N̲
M̲e̲t̲h̲o̲d̲ ̲t̲o̲ ̲C̲a̲l̲c̲u̲l̲a̲t̲e̲ ̲N̲u̲m̲b̲e̲r̲ ̲o̲f̲ ̲S̲p̲a̲r̲e̲s̲
In order to determine the number of spares it will
be assumed that the failure rate of each module (ircuit
board) has an exponential distribution. This approximation
holds true for electronic equipment throughout its
useful life, i.e. wear-out phenomena can be ignored.
Thus the probability mass function for each module
is:
p(t) = (1/MTBF) x xp(-t/MTBF)
where MTBF is the Mean Time Between Failure for that
module.
It can be shown that the probability of observing exactly
i failures over a period of t operating hours is given
by the Poisson distribution:
i
p (i) = (̲t̲/̲M̲T̲B̲F̲)̲ ̲ ̲ ̲x̲ ̲e̲x̲p̲(̲-̲ ̲t̲/̲M̲T̲B̲F̲)̲
i!
The Period t corresponds to the accumulated operating
period for the involved modules.
Therefore,the probability of observing r or less failures
during a period t is determined by the cumulative Poisson
distribution:
r i
(̲t̲/̲M̲T̲B̲F̲)̲ ̲ ̲x̲ ̲e̲x̲p̲(̲-̲t̲/̲M̲T̲B̲F̲)̲
P (failures r) =
i!
i = 0
To determine the number of spares r required to obtain
an 80% confidence level for a period of 90 days is
equivalent to determining the minimal r for which the
probability of having more than r failures during the
period covered is less thn 20%.
The following equation has to be solved for r:
i =
i
m̲ ̲ ̲ ̲x̲ ̲e̲x̲p̲ ̲(̲-̲m̲)̲
max
i ! .20
r i = r+1
r = number of spares required to obtain
the
required confidence level
m = N x ̲T̲ ̲
MTBF
N = total installed parts population. The
total installed population for a depot is determined
by the number installed iems at the sites involved.
T = length of period for which stock is
required
i.e 90 days for sites and 270 days
for the
central depot(s).
MTBF = Mean Time Betwen Failure (MTBF = 10…0e…6…0f…/
)
= failure rate per million hours.
Alternatively determine smallest integer r for which
r i
m
.80 exp (-m) x ̲ ̲ ̲
i!
i = 0
3 B̲I̲D̲D̲I̲N̲G̲ ̲P̲R̲O̲V̲I̲S̲I̲O̲N̲S̲
3.1 P̲R̲I̲C̲I̲N̲G̲
3.1.1 P̲r̲i̲c̲e̲ ̲B̲a̲s̲i̲s̲
The applicable unit prices for this bid are current
Customer List Prices as given in CR's standard customer
price lis for CR80 Mini (80/10 CLP).
3.1.2 F̲o̲r̲w̲a̲r̲d̲ ̲P̲r̲i̲c̲i̲n̲g̲
The forward pricing factor to be applied to above unit
prices is 1% per month. Above unit prices have thus
been increased by 34.78% in order to reflect an average
escalation period of 30 months i.e. from 1981-01-01
untill 1983-07-01.
3.1.3 T̲e̲r̲m̲s̲ ̲o̲f̲ ̲D̲e̲l̲i̲v̲e̲r̲y̲
Prices are ex works (Ballerup)
3.2 V̲A̲L̲I̲D̲I̲T̲Y̲
This bid for supply of spare parts in accordance with
the RSPL is open for acceptance until 1980-12-31.
3.3 D̲E̲L̲I̲V̲E̲R̲Y̲
After production testing CR will put the spares in
storage. By this event SHAPE takes title to the spares.
Delivery to sites will occur prior to SPA of the site
n question.
3.4 T̲E̲S̲T̲I̲N̲G̲
Production testing of spares will be performed according
to CR's normal production test procedures.
3.5 P̲E̲R̲I̲P̲H̲E̲R̲A̲L̲ ̲E̲Q̲U̲I̲P̲M̲E̲N̲T̲ ̲S̲P̲A̲R̲E̲S̲
It should be noted that the selection of peripherals
for CAMPS is still subject todiscussion. Consequently,
these items are intentionally left out of the RSPL
until the selected peripherals has been approved by
SHAPE at which point the RSPL will be updated.
Peripheral spares in question are:
- Disk SMD
- Line Printer
- Teeprinter
- VDU
- Paper Tape Reader
- Paper Tape Punch
3.6 P̲I̲E̲C̲E̲ ̲P̲A̲R̲T̲S̲
Specification of components used for repairs is intentionally
left out. It is a logical consequence of the selected
depot repair facilities which is still an option to
SHPE. When the approach has been chosen a component
specification list will be prepared as an amendment
to this RSPL.
3.7 R̲E̲M̲O̲T̲E̲ ̲E̲Q̲U̲I̲P̲M̲E̲N̲T̲
Remote Terminals, Remote TAREs, and their impact on
the main sites is not considered in this RSPL.
