Explanation: l´aria normalmente si usqa per i servizi (aria normale) e per gli strumenti (aria secca)
-------------------------------------------------- Note added at 10 days (2007-04-02 10:01:34 GMT) Post-grading --------------------------------------------------
Mi dispiace tu non sia convinta!!! Come detto "l'aria servizi" di solito è compressa ma non deumidificata, mentre "l'aria strumenti" è deumidificata (o essiccata). La prima serve per usi generali, mentre la seconda - privata dell'umidità - serve per strumenti o per particolari processi
--------------------------- http://www.tecnoparco-vba.it/ProdAria.html
Caratteristiche delle produzioni:
Aria essiccata:
Tipologia: Aria essiccata ad un grado di umidità garantito di max 0,1 g/Nmc.
Pressione: 7 bar
Potenzialità: 36.500 Nmc/h
Aria servizi:
Tipologia: Aria compressa satura di umidità.
Pressione: 7 bar
Potenzialità: 8.000 Nmc/h
Descrizione dell'impianto:
L'impianto è composto da una batteria di compressori centrifughi multistadio per una potenzialità totale di 44.000 Nmc/h.
Per la produzione di aria essiccata l'impianto dispone di bottiglie di essiccazione a letto adsorbente.
Recombiner System Procedure
An NRC-identified non-cited violation of Technical Specification 5.4.1, Administrative Controls (Procedures), was identified for the failure to adhere to procedure requirements when operators injected service air into the steam jet air ejectors and the offgas flowpath. The initial condition that the service air injection was needed for continued hydrogen water chemistry operation was not met. As a result of this procedure adherence deficiency, the licensee had reduced the ability to monitor for actual fuel cladding damage. The licensee entered the issue into the corrective action program, secured air injection to the steam jet air ejector, and deleted the instructions which allowed service air injection to the steam jet air ejectors.
If you need very “clean” air quality for your process functions, AISI Type 304L stainless is fine. We require 304L stainless steel tubing/pipe for instrumentation air.
For house service air systems that drive equipment or tools, carbon steel piping is fine with dryers.
http://www.usace.army.mil/publications/eng-manuals/em1110-2-...
13-2. Service Air System
a. General. The service air system is a nominal 700-kPa (100-psi) system providing air for maintenance and repair, control air, hydropneumatic tank air, charging air for the brake air system, and in some cases, air for ice control bubblers.
b. Service air requirement.
(1) Routine maintenance. Supply 25-40 L/s (50-80 cfm) for wrenches, grinders, hammers, inches,
drills, vibrators, cleaning, unplugging intakes and lines, etc.
(2) Major maintenance and repair. Supply 140-190 L/s (300-400 cfm) for sandblasting, painting, cleaning, etc. Normally this capacity should be provided with portable equipment. For projects too remote from a government or commercial source of temporary portable equipment, installed capacity should be provided.
Explanation: l´aria normalmente si usqa per i servizi (aria normale) e per gli strumenti (aria secca)
-------------------------------------------------- Note added at 10 days (2007-04-02 10:01:34 GMT) Post-grading --------------------------------------------------
Mi dispiace tu non sia convinta!!! Come detto "l'aria servizi" di solito è compressa ma non deumidificata, mentre "l'aria strumenti" è deumidificata (o essiccata). La prima serve per usi generali, mentre la seconda - privata dell'umidità - serve per strumenti o per particolari processi
--------------------------- http://www.tecnoparco-vba.it/ProdAria.html
Caratteristiche delle produzioni:
Aria essiccata:
Tipologia: Aria essiccata ad un grado di umidità garantito di max 0,1 g/Nmc.
Pressione: 7 bar
Potenzialità: 36.500 Nmc/h
Aria servizi:
Tipologia: Aria compressa satura di umidità.
Pressione: 7 bar
Potenzialità: 8.000 Nmc/h
Descrizione dell'impianto:
L'impianto è composto da una batteria di compressori centrifughi multistadio per una potenzialità totale di 44.000 Nmc/h.
Per la produzione di aria essiccata l'impianto dispone di bottiglie di essiccazione a letto adsorbente.
Recombiner System Procedure
An NRC-identified non-cited violation of Technical Specification 5.4.1, Administrative Controls (Procedures), was identified for the failure to adhere to procedure requirements when operators injected service air into the steam jet air ejectors and the offgas flowpath. The initial condition that the service air injection was needed for continued hydrogen water chemistry operation was not met. As a result of this procedure adherence deficiency, the licensee had reduced the ability to monitor for actual fuel cladding damage. The licensee entered the issue into the corrective action program, secured air injection to the steam jet air ejector, and deleted the instructions which allowed service air injection to the steam jet air ejectors.
If you need very “clean” air quality for your process functions, AISI Type 304L stainless is fine. We require 304L stainless steel tubing/pipe for instrumentation air.
For house service air systems that drive equipment or tools, carbon steel piping is fine with dryers.
http://www.usace.army.mil/publications/eng-manuals/em1110-2-...
13-2. Service Air System
a. General. The service air system is a nominal 700-kPa (100-psi) system providing air for maintenance and repair, control air, hydropneumatic tank air, charging air for the brake air system, and in some cases, air for ice control bubblers.
b. Service air requirement.
(1) Routine maintenance. Supply 25-40 L/s (50-80 cfm) for wrenches, grinders, hammers, inches,
drills, vibrators, cleaning, unplugging intakes and lines, etc.
(2) Major maintenance and repair. Supply 140-190 L/s (300-400 cfm) for sandblasting, painting, cleaning, etc. Normally this capacity should be provided with portable equipment. For projects too remote from a government or commercial source of temporary portable equipment, installed capacity should be provided.
Gian Italy Specializes in field Native speaker of: Italian PRO pts in category: 1605
Note from asker to answerer
non sono molto convinta, comunque grazie... senza contesto è molto difficile!
The translation workplace 
