OPERATIVE MANUAL
MN-L20-A1
DC-18-10
MEC-RELA®
- www.mecrela.it – mecrela@terranova-instruments.com
a TERRANOVA® Srl brand
- www.terranova-instruments.com - VAT IT07848810151
Factory & Sales: Via Gramsci 1 – 26827 Terranova dei Passerini (LO) – Italy
Head Office: Via Rosso Medardo 16 – 20159 Milano – Italy Ph: +39 0377 919119 – Fax: +39 0377
855720
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g.
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3.7
S
YSTEM
Take account of the possible effects on the whole expected working system.
In particular, you must assess any proposed actions and the consequences that may
result in any other part of the system, you must ensure the system remains safe at all
times.
Make sure that the control valve is isolated via shut-off valves to prevent any abrupt
variations to the system.
3.8
P
RESSURIZED
S
YSTEMS
Make sure that the pressure is isolated and discharged to the atmospheric pressure in safe
conditions. Take account of a double insulation (double block and vent) and the blocking or
the labelling of the closed valves. Do not consider the system depressurized even if the
pressure gauge indicates zero pressure. The depressurization process should include taking
the valve through its full stroke, to ensure all pressure is allowed to exhaust to
atmosphere.
During the operation the valve is pressurized. Before performing any maintenance
operation or action on the flanges and closing caps, make sure that the line is
depressurized (0 bar) and at ambient temperature.
3.9
T
OOLS
A
ND
C
ONSUMABLE
P
ARTS
Before starting the work, make sure to have at your disposal all the tools required to
perform it, do not make use of inappropriate tools. Use only Mec-Rela original spare parts.
3.10
P
ROTECTION
C
LOTHES
Ta
ke account of whether you and/or others need some clothes against the hazards, such as
chemical products, temperatures, radiations, noise, fall of objects, risks for eyes and face.
3.11
Q
UALIFICATION
O
F
T
HE
O
PERATORS
I
N
C
HARGE
O
F
T
HE
W
ORKS
All works must be performed and supervised by some skilled, trained and competent
personnel.
