DSH 308 Table 3- Temperature limits

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DSH 308

Table 3- Temperature limits , u+ {4 w9 U. G: ], R' p

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61010-1(ed.1);am1;am2 4 Z8 m5 b/ N" D- W3 }

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% _1 C* Q1 m: W% z9 lStandard:
: w# u2 N5 w# ^IEC 61010-
1:1990+A1:1992+A2:1995
5 \/ i/ [+ K0 I1 h+ Z3 W  uSub clause:
9
Sheet n. 308
Page 1(1)
: e4 M. D. k. l3 y) D; _Subject:
, y$ l( E8 o0 Y" J, R& F0 H! HTable 3 - Temperature limits
5 ^( T# A8 O9 d( o& RKey words:
+ Z0 v/ j8 {2 f* u$ v- Fire point
- Temperature
) S6 m  @9 z  l9 vDecision taken by
/ \9 s) Q+ P' tETF3 and confirmed
by CTL at its 38th
meeting, in Toronto
Question:
( A& @! o) l' g# b7 P1 XHow can the requirements of this clause be used for parts in contact with liquids. Where can
the figures for Fire Point be obtained?
& s, Z; L$ c( x+ R% Y) JDecision and Explanation
' S, W7 D& |6 y2 LThis requirement should only be applied where a hazard may arise.
Figures for fire point are available in ANSI/NFPA 497-1997, published by the National Fire
6 x0 V5 B# Q7 n: fProtection Association, Quincy, Massachusetts, USA.
! _% P" U' R3 k7 r) dTable 2-1 of NFPA 497 identifies flash points, autoignition temperatures
2 F* \3 q$ e% Q9 i(fire points), lower and upper flammable limits (in %), vapor densities,
vapor pressures, minimum ignition energies, minimum ignition current ratios,
and maximum experimental safe gaps of approximately 225 common liquids and
gases.
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