Security Instructions For Steam Hoses

Selection of Steam Hoses

  • Make sure that the selected hose satisfies steam hose construction requirements.
  • The permanent branding on the hose outer cover must give hose identification information.
  • You must identify the type of service the steam hose is being asked to accomplish.

a) is the hose manually handled?
b) What is the anticipated frequency of use?
c) What is the pressure of the steam service?
d) Is it subject to peak pressures?
e)What is the temperature of the steam?
f) Saturated or superheated steam?
g) Specify the external conditions in the area where the hose will be serviced.

  • You should know that accumulation of corrosive petroleum of chemical based materials externally can have a deteriorating effect on hose cover.

Installation of Steam Hose

  • It is necessary to avoid the alternative use of the hose as water and steam which causes a phenomenon of ‘popcorn’.
  • You must ensure that the hose couplings are designed for steam hose service. Steam hose couplings use a bolt-on outside clamp which can be retightened as necessary over the service life of the hose. Follow the coupling manufacturer’s instructions for coupling attachment. Check tightness with each use.
  • Avoid extreme bending of the hose near the coupling.
  • Provide a suitable means of storing the hose when not in use. A permanent tray will minimize the damage to the hose in storage. Do not hang the hose on a hook, nail, or other device which could damage the hose.

Safety

  • The operators must use gloves, rubber boots, full length protective clothing and eye protection. The objective is to provide protection from scalding burns resulting from splash-back of steam.
  • The working area must be free of hazards and other clutter.
  • Check tightness of coupling bolts with each use.
  • Turning off the pressure, when the hose is not in service, can provide dramatic increases in steam hose service life.

Periodic Maintenance and Control of Steam Hose

All steam hoses are expected to wear out in a time period. It’s important to continually check the hose for deterioration to the point where it can no longer provide safe service. The operator should be aware of the following signs of trouble:

  • Cover blister of lumps.
  • Cuts in the outside of the hose which expose the reinforcement.
  • Steam leakages at the coupling ends or anywhere along the length of the hose.
  • Flattened or kinked areas which have damaged the hose.
  • Streamflow reduction indicates that the tube is swelling.
  • When any of the above abnormalities appear it is good safety practice to immediately remove the hose from service. Once removed, the hose can be carefully inspected before further use. Steam hose failures frequently occur near the ends due to flexing and strain at the couplings. In these cases the hose can usually be cut back and recoupled, providing additional service life. When the hose is subject to continuous high pressure/ temperature service should be inspected periodically for signs of tube hardening. In most cases it is necessary to remove a coupling for tube inspection.

Safety Warning

Contact with steam is dangerous and if not properly handled, steam can cause damage to property, serious injuries and even death. In order to avoid damage to property, serious injury or death you must select the proper steam hose for the given application. Appropriate installation, usage and maintenance of the steam hose you select will contribute to increasing operator safety. Following information is offered to assist you in each area.

Cleaning

If can be washed and sterilized with usual detergents or steam cleaned to a temperature of +120°C (+248°F) for short periods.

Recommendation

The hose must be left empty after use.

Security Instructions for Steam Hoses

Properties of Saturated Steam
Working Pressure Temperature of Saturated Steam
kg/cm² psi °C °F
1 14 99 210
2 28 120 248
3 43 133 272
4 57 143 290
5 71 151 304
6 85 158 316
7 99 164 328
8 114 170 338
9 128 175 348
10 142 179 354
11 156 183 362
12 170 187 368
13 185 191 376
14 199 194 382
15 213 197 386
16 227 200 392
17 241 203 398
18 256 206 403
19 270 209 408
20 284 211 412
22 312 216 421
24 341 221 430
26 369 225 438