In the distribution of special clothing among workplaces, the need is determined
having the data on PPE, which has the expired service life and needs to be replaced. It
does not take into account the change in the technology at work and the emergence of
new technologies, which requires new techniques during operation, the required
duration of work (supply service). The maintenance and logistics service (supply) may
not have at its disposal the instructions on operation and the use of special clothing,
passports, technical manuals and regulations, certificates. This creates a problem. The
warehouse manager may have problems with the impossibility of writing off sets of
clothing, shortage of clothing, etc.
Modeling of PPE stocks by minimizing economic costs and production
resources. As a rule, the provision of PPE is regulated by the Safety and Health at
Work Act 0.00 -4.01-08 [7].
The calculation of the annual required number of PPE for the enterprise is carried
out according to the formula:
í µí±‹
í µí±–
=í µí±
í µí±–
âˆ™í µí°¶
í µí±–
âˆ’Ïƒí µí±‹
0
âˆ™í µí±Œ
í µí±–
,
(3)
where
í µí±‹
í µí±–
– the required amount of PPE in units, complete sets at face value for
the period;
í µí±
í µí±–
– the need for PPE.
í µí°¶
í µí±–
– the coefficient taking into account the wear and tear of PPE of a particular
type and face value [6];
These calculations are based on costs standards, that is why the amount, calculated
in the first approximation, takes into account both the changed number of residues and
the amount of work spent, time for the overalls type, norms of handing out, number of
persons.
We offer an approach that takes into account the visibility of stock reserves,
savings of the company manager, who buys overalls and special footwear or leases
them temporarily. We also discern the demand and delivery dates. And this results in
the absence of penalties for the preservation of goods and the cost of a unit of clothing
without loss of qualitative properties, the value of losses, the importance of lack of
clothing, the distribution according to the actual needs, but not chaotic, and the entry
of PPE in the branches of organizations. Transition of ownership is a key moment
between suppliers when ordering special clothes, as there may be untimely payment
for prepayment or shipping, which makes it necessary to be demanding concerning
obligations up to a specific time, issuing invoices for arrival in the general warehouse,
accounting for the correct write-off from the warehouse.
The purpose of modeling is to find the optimum in organizing the provision of
workers with PPE, that is, to organize the necessary PPE stock: how much of it is
needed, how much must be ordered from suppliers without overspending or deficits
with optimal repetition of orders, given that for a certain amount of work, some
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